JP2017216138A - Lighting apparatus - Google Patents

本発明の照明器具１は、不透光性の本体２の下面側の周縁部で囲まれた領域にＬＥＤ素子７が放射する光を所定の配光にて出射する発光部６を備え、前記発光部６の出射光が道路方向に配光される照明器具において、前記発光部６から前記道路方向に配光される出射光のうち、グレア抑制として、前記発光部６の鉛直方向に対して所定角度以上の出射光が前記開口部２Ａの周縁で遮られる位置に、前記発光部６が前記本体２に配置された構成である。   The luminaire 1 of the present invention includes a light emitting unit 6 that emits light emitted from the LED element 7 with a predetermined light distribution in a region surrounded by a peripheral portion on the lower surface side of the light-impermeable main body 2. In the lighting fixture in which the light emitted from the light emitting unit 6 is distributed in the road direction, out of the light emitted from the light emitting unit 6 in the road direction, glare suppression is performed with respect to the vertical direction of the light emitting unit 6. The light emitting unit 6 is arranged in the main body 2 at a position where emitted light having a predetermined angle or more is blocked by the periphery of the opening 2A.

その一つ形態として、図１、図２等に示すように、本体２は、アルミニウム等の熱良導材で構成され、上壁２Ｔと上壁２Ｔから下降する周囲壁２Ｓを有し、前記領域として、周囲壁２Ｓで囲まれた下側に開口する開口部２Ａを形成した内部空間４を形成し、本体２は、支柱等への取り付け部１０を後部に備える。照明器具１は、開口部２Ａを塞ぐように本体２に組み合わされる透光性カバー３を備える前後方向に長い形態であり、開口部２Ａに沿って発光部６を配置している。発光部６は、ＬＥＤ素子７が放射する光を所定の配光にて出射する部分であり、ＬＥＤ基板５の下側面にＬＥＤ素子７が配置され、ＬＥＤ素子７を覆うようにＬＥＤ基板５に組み合わされＬＥＤ素子７が放射する光を所定の配光にて出射する配光ユニット８を備える。本体２は、内部空間４のうちの大半を占める前部空間４Ａに、ＬＥＤ基板５の上面が当接する前後方向に延びる熱伝導リブ１１を一体に有する。   As one form thereof, as shown in FIGS. 1, 2 and the like, the main body 2 is made of a heat conducting material such as aluminum and has an upper wall 2T and a peripheral wall 2S descending from the upper wall 2T, As an area, an internal space 4 is formed in which an opening 2A that is open on the lower side surrounded by the surrounding wall 2S is formed, and the main body 2 includes a mounting portion 10 for a column or the like at the rear. The lighting fixture 1 has a long shape in the front-rear direction including a translucent cover 3 combined with the main body 2 so as to close the opening 2A, and the light emitting unit 6 is disposed along the opening 2A. The light emitting unit 6 is a part that emits light emitted from the LED element 7 with a predetermined light distribution. The LED element 7 is disposed on the lower surface of the LED substrate 5 and covers the LED element 7 so as to cover the LED element 7. A light distribution unit 8 that emits the light emitted from the LED elements 7 in combination with a predetermined light distribution is provided. The main body 2 integrally has a heat conduction rib 11 extending in the front-rear direction in which the upper surface of the LED substrate 5 is in contact with the front space 4A occupying most of the internal space 4.

また、本発明は、下面に開口部２Ａを有する不透光性の本体２の開口部２Ａに対応して発光部６が取り付けられ、発光部６の出射光が道路方向に配光される照明器具において、
発光部６から道路方向に配光される出射光のうち、発光部６の鉛直方向に対する角度で所定角度以上の出射光が開口部２Ａの周縁で遮られる位置に、発光部６が本体２に取り付けられている。 In the present invention, the light emitting part 6 is attached corresponding to the opening 2A of the opaque body 2 having the opening 2A on the lower surface, and the emitted light from the light emitting part 6 is distributed in the road direction. In the instrument,
Out of the emitted light distributed from the light emitting unit 6 in the road direction, the light emitting unit 6 is attached to the main body 2 at a position where the emitted light of a predetermined angle or more with respect to the vertical direction of the light emitting unit 6 is blocked by the periphery of the opening 2A. It is attached.

発光部６は、ＬＥＤ基板５の下側面にＬＥＤ素子７が配置され、ＬＥＤ素子７を覆うようにＬＥＤ基板５に組み合わされＬＥＤ素子７が放射する光を所定の配光にて出射する配光ユニット８を備え、
配光ユニット８はＬＥＤ素子７ごとに所定配光の出射光を形成する配光特性部８３Ａを備え、
発光部６が内部空間４に取り付けられた状態で、配光特性部８３Ａと開口部２Ａの周縁下端の関係が、所定角度以上の出射光が遮られる関係である。 The light emitting unit 6 includes an LED element 7 disposed on the lower surface of the LED substrate 5, and is combined with the LED substrate 5 so as to cover the LED element 7 and emits light emitted from the LED element 7 with a predetermined light distribution. With unit 8,
The light distribution unit 8 includes a light distribution characteristic portion 83A that forms outgoing light of a predetermined light distribution for each LED element 7.
In a state in which the light emitting unit 6 is attached to the internal space 4, the relationship between the light distribution characteristic unit 83A and the lower end of the periphery of the opening 2A is a relationship in which emitted light having a predetermined angle or more is blocked.

本体２は、上壁２Ｔと上壁２Ｔから下降する周囲壁２Ｓを有し、周囲壁２Ｓで囲まれた下側に開口する開口部２Ａを有する熱良導材で構成され、上壁２Ｔと周囲壁２Ｓで囲まれ後部から前部へ向けて長い形態の内部空間４を有し、内部空間４には、後部に点灯制御部１４が配置され、前部に発光部６が配置されている。
本体２は、上壁２ＴからＬＥＤ素子７に対応してＬＥＤ基板５の上面に当接する前後方向に長い熱伝導リブ１１を有し、
熱伝導リブ１１の左右両側で、本体２の上壁２Ｔ及び周囲壁２ＳとＬＥＤ基板５との間に、本体２の後部から斜め上前方へ延び熱伝導リブ１１の前端と後端で連通する空気通路が形成されている。
以下、本発明の実施形態として、ＬＥＤ素子７が２列配置されたＬＥＤ照明器具１について、図面を参照して説明する。 The main body 2 has an upper wall 2T and a peripheral wall 2S descending from the upper wall 2T, and is composed of a heat conducting material having an opening 2A that is open on the lower side surrounded by the peripheral wall 2S. It has an internal space 4 that is surrounded by the surrounding wall 2S and is long from the rear to the front. In the internal space 4, the lighting control unit 14 is disposed at the rear, and the light emitting unit 6 is disposed at the front. .
The main body 2 has a heat conducting rib 11 that is long in the front-rear direction in contact with the upper surface of the LED substrate 5 corresponding to the LED element 7 from the upper wall 2T.
On the left and right sides of the heat conducting rib 11, the upper wall 2 </ b> T and the surrounding wall 2 </ b> S of the main body 2 and the LED substrate 5 extend obliquely upward from the rear of the main body 2 and communicate with each other at the front and rear ends of the heat conducting rib 11. An air passage is formed.
Hereinafter, as an embodiment of the present invention, an LED lighting apparatus 1 in which two rows of LED elements 7 are arranged will be described with reference to the drawings.

図１乃至図６に示すように、本発明のＬＥＤ照明器具１は、下面の略全域が開口するように開口部２Ａを形成し内外両面に防錆効果のある熱伝導性塗装を施した金属製等の熱伝導良好な不透光性の本体２と、この本体２の開口部２Ａを塞ぐように開口部２Ａの周縁部に組み合わされる合成樹脂製の透光性カバー３を備える。透光性カバー３は下方に膨らんだ形態をなし、上端周縁部には上方へ突出するフランジ３Ｆが形成されている。本体２の開口部２Ａの周縁部２Ａ１を巡るように、下方へ突出する環状のフランジ２Ｆを形成している。開口部２Ａの周縁部２Ａ１には、フランジ２Ｆの内側に透光性カバー３のフランジ３Ｆが嵌り込む溝２Ｍを有する。   As shown in FIG. 1 to FIG. 6, the LED lighting device 1 of the present invention is a metal in which an opening 2A is formed so that substantially the entire lower surface is opened and a thermally conductive coating having a rust-preventing effect is applied to both the inner and outer surfaces. A translucent main body 2 having good thermal conductivity, such as a product, and a synthetic resin translucent cover 3 combined with the peripheral edge of the opening 2A so as to close the opening 2A of the main body 2 are provided. The translucent cover 3 has a form that swells downward, and a flange 3F that protrudes upward is formed at the peripheral edge of the upper end. An annular flange 2F protruding downward is formed so as to go around the peripheral edge 2A1 of the opening 2A of the main body 2. The peripheral edge 2A1 of the opening 2A has a groove 2M into which the flange 3F of the translucent cover 3 is fitted inside the flange 2F.

溝２Ｍにフランジ３Ｆが嵌り込むように、透光性カバー３を本体２の開口部２Ａに組み合わせた状態で、ネジＮＪで開口部２Ａの周縁部２Ａ１に固定する。溝２Ｍとフランジ３Ｆのように嵌り合う凹凸構成によって、本体２と透光性カバー３との間が防水構造をなしている。なお、溝２Ｍの上底にパッキンを収容し、このパッキンがフランジ３Ｆによって圧縮される構成によって、更によい防水効果が得られる。
図８及び図１１に示すように、ＬＥＤ照明器具１は、水平ラインに対して開口部２Ａのラインが、後部１Ａより前部１Ｂが角度αだけ若干高くなる傾斜状態を保つ。この状態で、透光性カバー３の下面は前部から後部に向けて次第に下方となる傾斜をなしており、後部から急峻に本体２に向けた立ち上がり部３Ｇを形成する形態をなし、透光性カバー３の最低部には、排水孔５１とその周囲を囲む突壁４０を備える。 In a state where the translucent cover 3 is combined with the opening 2A of the main body 2 so that the flange 3F fits into the groove 2M, the screw 2J is fixed to the peripheral portion 2A1 of the opening 2A. Due to the concavo-convex configuration that fits like the groove 2M and the flange 3F, a waterproof structure is formed between the main body 2 and the translucent cover 3. In addition, a further waterproof effect is acquired by the structure which accommodates packing in the upper bottom of the groove | channel 2M, and this packing is compressed by the flange 3F.
As shown in FIGS. 8 and 11, the LED lighting device 1 maintains an inclined state in which the line of the opening 2 </ b> A is slightly higher than the rear part 1 </ b> A by the angle α with respect to the horizontal line. In this state, the lower surface of the translucent cover 3 is inclined downward from the front to the rear, and forms a rising portion 3G that sharply faces the main body 2 from the rear. The lowest part of the cover 3 includes a drain hole 51 and a protruding wall 40 surrounding the drain hole 51.

内部空間４のうちの前部空間４Ａにおいて、開口部２Ａに沿ってＬＥＤ基板５が、後述のように本体２に伝熱的に取り付けられる。電気絶縁性のＬＥＤ基板５は、発光部６を構成する複数のＬＥＤ素子（発光ダイオード）７を下面に実装し、ＬＥＤ素子７への電路が同じ下面にプリント配線として形成され、このプリント配線を絶縁被膜で覆っている。ＬＥＤ基板５の下面には、ＬＥＤ基板５と重ね合わせ状態に配光ユニット８が配置されている。配光ユニット８は透光性合成樹脂製であり、板状部８１に複数の配光部８２を一体形成しており、所定位置において板状部８１が、ＬＥＤ基板５を貫通して本体２に形成した取り付けボス１３Ｂに螺合するネジ９によって取り付けられる。これによって配光ユニット８がＬＥＤ基板５の下面に取り付けられる。配光部８２は、ＬＥＤ素子７ごとに所定の配光となる出射光を形成する部分であり、実施例ではレンズ形態をなし、ＬＥＤ照明器具１の前後方向軸に対して左右方向に長い配光特性を有する。図１及び図１２に示すように、配光ユニット８は、前側配光ユニット８Ｐと後側配光ユニット８Ｑで構成している。   In the front space 4A of the internal space 4, the LED substrate 5 is attached to the main body 2 in a heat transfer manner along the opening 2A as described later. The electrically insulating LED substrate 5 has a plurality of LED elements (light-emitting diodes) 7 constituting the light-emitting portion 6 mounted on the lower surface, and an electric path to the LED element 7 is formed as a printed wiring on the same lower surface. It is covered with an insulating film. A light distribution unit 8 is disposed on the lower surface of the LED substrate 5 so as to overlap the LED substrate 5. The light distribution unit 8 is made of a light-transmitting synthetic resin, and a plurality of light distribution portions 82 are integrally formed on the plate-like portion 81, and the plate-like portion 81 penetrates the LED substrate 5 at a predetermined position and the main body 2. It attaches with the screw | thread 9 screwed together to the attachment boss | hub 13B formed in this. As a result, the light distribution unit 8 is attached to the lower surface of the LED substrate 5. The light distribution unit 82 is a part that forms emitted light that has a predetermined light distribution for each LED element 7. In the embodiment, the light distribution unit 82 has a lens shape and is long in the left-right direction with respect to the front-rear direction axis of the LED lighting device 1. Has optical properties. As shown in FIGS. 1 and 12, the light distribution unit 8 includes a front light distribution unit 8P and a rear light distribution unit 8Q.

本体２は、上壁２Ｔと上壁２Ｔから開口部２Ａの周縁に至る周囲壁２Ｓで囲まれた熱良導材で構成される。本体２は、アルミニウムを材料としてダイキャスト成形され、下側に開口部２Ａを形成するように上方に膨らむ形態の内部空間４を形成し、内部空間４の開口部２Ａを透光性カバー３で覆う形態である。本体２は、本体２の後壁２Ｂから後方へ延出する状態に、電柱等の支柱へ取り付ける取り付け部１０を一体形成している。また本体２は、内部空間４のうちの大半を占める前部空間４Ａには、ＬＥＤ基板５の上面を支える前後方向に並行に延びる複数の熱伝導リブ１１と、ＬＥＤ基板５を取り付ける取り付けボス１３が本体２に一体に形成されている。取り付けボス１３は、熱伝導リブ１１にＬＥＤ基板５の上面が当接した状態でプリント配線とは接続しない位置に形成したＬＥＤ基板５の４隅の孔５Ｐを通してネジ１２でＬＥＤ基板５を取り付ける部分である。ＬＥＤ基板５は、取り付けボス１３に取り付けられた状態で、中央部が前後方向に並ぶ本体２に一体形成されたボス１３Ｂで支えられると共に、前部空間４Ａにおける開口部２Ａの多くを塞ぐように、開口部２Ａよりも若干空間４側へ入った位置（前部空間４Ａ側へ入った位置）において、開口部２Ａに略並行に沿った状態である。本体２の内部空間４は、前部から後部に向けて次第に深くなる（開口部２Ａを基準とすれば次第に上方に高くなる）ように形成している。   The main body 2 is constituted by a heat conducting material surrounded by an upper wall 2T and a peripheral wall 2S extending from the upper wall 2T to the periphery of the opening 2A. The main body 2 is die-cast using aluminum as a material, forms an internal space 4 that swells upward so as to form an opening 2A on the lower side, and the opening 2A of the internal space 4 is covered with a translucent cover 3. It is a form to cover. The main body 2 is integrally formed with a mounting portion 10 that is attached to a support pole such as a utility pole so as to extend rearward from the rear wall 2B of the main body 2. The main body 2 has a plurality of heat conductive ribs 11 extending in parallel in the front-rear direction for supporting the upper surface of the LED substrate 5 and a mounting boss 13 for attaching the LED substrate 5 in the front space 4A occupying most of the internal space 4. Is formed integrally with the main body 2. The mounting boss 13 is a portion for attaching the LED board 5 with the screws 12 through the holes 5P at the four corners of the LED board 5 formed at positions where the upper surface of the LED board 5 is in contact with the heat conductive rib 11 and not connected to the printed wiring. It is. The LED substrate 5 is supported by a boss 13B integrally formed on the main body 2 arranged in the front-rear direction while being attached to the attachment boss 13, and closes most of the opening 2A in the front space 4A. In a position slightly closer to the space 4 than the opening 2A (a position entering the front space 4A), the opening 2A is substantially parallel to the opening 2A. The internal space 4 of the main body 2 is formed so as to gradually become deeper from the front part toward the rear part (becomes higher gradually when the opening 2A is used as a reference).

ＬＥＤ照明器具１は、本体２の後壁２Ｂを後部１Ａとしてそこから前部１Ｂへ長く延びる形態をなし、発光部６の発光によって、図１５に示すように、配光ユニット８と透光性カバー３を通して道路の路面を道路方向に長い配光となるように照射する。
このため、本体２と透光性カバー３は、後部１Ａから前部１Ｂへ長く延びる形態をなし、本体２内に形成される内部空間４も前後方向に長く、内部空間４はその前部空間４Ａと後部空間４Ｂが連通状態に形成される。そして、ＬＥＤ基板５及び前部空間４Ａも前後方向に長い形態であり、ＬＥＤ基板５は前後方向に長い矩形状の平板形状である。 The LED lighting apparatus 1 has a configuration in which the rear wall 2B of the main body 2 is used as a rear part 1A and extends from the front part 1B to the front part 1B. As shown in FIG. The cover 3 is irradiated so that the road surface of the road has a long light distribution in the road direction.
For this reason, the main body 2 and the translucent cover 3 are configured to extend from the rear portion 1A to the front portion 1B, the internal space 4 formed in the main body 2 is also long in the front-rear direction, and the internal space 4 is the front space. 4A and the rear space 4B are formed in a communication state. The LED substrate 5 and the front space 4A are also long in the front-rear direction, and the LED substrate 5 has a rectangular flat plate shape that is long in the front-rear direction.

ＬＥＤ基板５は前後方向に長い平板の矩形状をなし、ＬＥＤ素子７は、前後方向に長い矩形状のＬＥＤ基板５の下側面に、前後方向に間隔を存して複数列状態に配置され、熱伝導リブ１１は、ＬＥＤ素子７の各列の裏側（上面側）に対向する位置に形成する。
実施例の場合は、ＬＥＤ素子７はＬＥＤ基板５に前後方向に等間隔でもって左右対称に２列状態に配置され、図５及び図６に示すように熱伝導リブ１１は、２列配置のＬＥＤ素子７に対向する位置の裏側（上面側）に形成している。熱伝導リブ１１の後端は後部空間４Ｂに臨む位置であり、本体２と一体形成される熱伝導リブ１１の前端は前部空間４Ａの前壁２Ｇの後方位置である。
ＬＥＤ基板５の下面の後端部に、制御部１４のコネクタ１４Ｃと電気的に接続するためにコネクタ９５が配置されている。 The LED substrate 5 has a flat rectangular shape that is long in the front-rear direction, and the LED elements 7 are arranged in a plurality of rows at intervals in the front-rear direction on the lower side surface of the rectangular LED substrate 5 that is long in the front-rear direction. The heat conductive rib 11 is formed at a position facing the back side (upper surface side) of each row of the LED elements 7.
In the case of the embodiment, the LED elements 7 are arranged in two rows symmetrically on the LED substrate 5 at equal intervals in the front-rear direction, and the heat conductive ribs 11 are arranged in two rows as shown in FIGS. It is formed on the back side (upper surface side) of the position facing the LED element 7. The rear end of the heat conductive rib 11 is a position facing the rear space 4B, and the front end of the heat conductive rib 11 formed integrally with the main body 2 is a rear position of the front wall 2G of the front space 4A.
A connector 95 is disposed at the rear end of the lower surface of the LED board 5 in order to be electrically connected to the connector 14C of the control unit 14.

ＬＥＤ基板５の上面には、電気的接続とならないように、下面のプリント配線とは接続しない状態に放熱用の熱伝導被膜（図示せず）が略全面に亘り形成されており、この熱伝導被膜が熱伝導リブ１１に当接して、ＬＥＤ基板５の発熱をこの熱伝導被膜から熱伝導リブ１１を経て本体２の表面から放熱する仕組みである。このため、ＬＥＤ基板５から熱伝導リブ１１を通して本体２に伝達される熱の伝達効果を向上させるために、熱伝導リブ１１は、ＬＥＤ素子７の裏側（上面側）に対向する位置に形成する。   On the upper surface of the LED substrate 5, a heat conductive film (not shown) for heat dissipation is formed over substantially the entire surface so as not to be electrically connected to the printed wiring on the lower surface. The coating comes into contact with the heat conducting rib 11 and the heat generated by the LED substrate 5 is radiated from the surface of the main body 2 through the heat conducting rib 11 from the heat conducting coating. For this reason, in order to improve the transmission effect of the heat transmitted from the LED substrate 5 to the main body 2 through the heat conductive rib 11, the heat conductive rib 11 is formed at a position facing the back side (upper surface side) of the LED element 7. .

また、ＬＥＤ照明器具１は、ＬＥＤ素子７に点灯電力を供給する電源部と、ＬＥＤ素子７の点灯と消灯の制御を行う制御回路とを含む制御部１４が、前部空間４Ａの後方に位置する後部空間４Ｂに配置されている。このため、制御部１４は、ＬＥＤ基板５よりも後方配置となる。制御部１４は、電源部を構成する電気部品及び前記制御回路を構成する電気部品ＥＰがプリント配線基板である制御基板１５の下側面に取り付けられる。
図１、図２等に示すように、制御基板１５は、後部空間４Ｂに本体２から一体に突出する４個の取り付けボス１６、１６Ｂに載置した状態で、その対角線上の２か所の取り付けボス１６をネジ１７で固定し、本体２と熱伝導状態となる。残りの対角線上の２か所の取り付けボス１６Ｂは、制御基板１５に形成した対角線上の２か所の孔に嵌合する突起１６Ｔを中央部に備えた位置決めボスである。
この取り付け状態で、制御基板１５は、開口部２Ａから深く空間４側へ入った位置（後部空間４Ｂの上壁に近く入った上方位置）であり、ＬＥＤ基板５よりも上方位置となるように、内部空間４内へ深く入った位置（本体２の上壁に近い位置）を維持する。 Further, in the LED lighting apparatus 1, a control unit 14 including a power supply unit that supplies lighting power to the LED element 7 and a control circuit that controls lighting and extinguishing of the LED element 7 is located behind the front space 4 </ b> A. Is arranged in the rear space 4B. For this reason, the control unit 14 is arranged behind the LED substrate 5. In the control unit 14, an electrical component that constitutes a power supply unit and an electrical component EP that constitutes the control circuit are attached to the lower surface of the control board 15 that is a printed wiring board.
As shown in FIG. 1, FIG. 2, etc., the control board 15 is placed on the four mounting bosses 16 and 16B integrally projecting from the main body 2 in the rear space 4B, and at two locations on the diagonal line. The mounting boss 16 is fixed with the screw 17 so as to be in a heat conduction state with the main body 2. The remaining two mounting bosses 16B on the diagonal line are positioning bosses provided with protrusions 16T fitted in the two diagonal holes formed on the control board 15 at the center.
In this attached state, the control board 15 is a position that is deeper into the space 4 side from the opening 2A (an upper position that is closer to the upper wall of the rear space 4B) and is higher than the LED board 5. The position (the position close to the upper wall of the main body 2) that has entered deep into the internal space 4 is maintained.

内部点検等のために透光性カバー３が本体２から取り外された状態で、作業者が制御部１４の電気回路部分に触れると危険であるため、その危険防止のために、制御部１４を下側から全体的に覆う保護カバー１８を設けている。この保護カバー１８は、後部空間４Ｂに本体２から一体に突出する４個の取り付けボス１９、１９Ｂに載置した状態で、その対角線上の２か所の取り付けボス１９をネジ２０で固定し、残りの対角線上の２か所の取り付けボス１９Ｂは、保護カバー１８に形成した対角線上の２か所の孔に嵌合する突起１９Ｔを中央部に備えた位置決めボスである。
この取り付けによって、保護カバー１８は、制御基板１５及び電気部品ＥＰを含む制御部１４と離間した状態であり、制御基板１５及び電気部品ＥＰに作業者が触れることによる感電を防いでいる。
保護カバー１８は、金属板か不透明状態の合成樹脂板で構成され、透光性カバー３を通して外部から制御部１４が見えないようにする効果もある。 It is dangerous for an operator to touch the electric circuit portion of the control unit 14 with the translucent cover 3 removed from the main body 2 for internal inspection or the like. A protective cover 18 that covers the entire surface from the lower side is provided. The protective cover 18 is mounted on the four mounting bosses 19 and 19B integrally projecting from the main body 2 in the rear space 4B, and the two mounting bosses 19 on the diagonal are fixed with screws 20, The remaining two mounting bosses 19B on the diagonal line are positioning bosses provided with protrusions 19T fitted in the two diagonal holes formed in the protective cover 18 at the center.
By this attachment, the protective cover 18 is in a state of being separated from the control unit 14 including the control board 15 and the electric component EP, and prevents an electric shock caused by an operator touching the control board 15 and the electric component EP.
The protective cover 18 is made of a metal plate or an opaque synthetic resin plate, and has an effect of preventing the control unit 14 from being seen from the outside through the translucent cover 3.

ＬＥＤ照明器具１は、周囲の照度を検知して日暮れ時から夜明けまでの夜間にＬＥＤ素子７が点灯するように制御部１４に電気的に接続された照度センサＳＳを備える。照度センサＳＳは、制御基板１５と電気的に接続されるセンサ基板１５Ｈに取り付けた光を透過しないホルダ２１内に保持されており、照度センサＳＳがＬＥＤ照明器具１の後方の周囲の照度を検知するように、ホルダ２１が本体２の後壁２Ｂに形成した採光窓（採光孔ともいう）２Ｈに保持されている。ホルダ２１は、照度センサＳＳへ周囲の光が侵入するように後方に開口しており、この開口と採光窓２Ｈを防水状態に塞ぐように透光性のカバー２２が採光窓２Ｈに挿入保持され、透光性のカバー２２とホルダ２１が結合されて、ホルダ２１が採光窓２Ｈに保持される関係である。採光窓２Ｈは取り付け部１０から外れた位置となるように、取り付け部１０の横側で後壁２Ｂに形成され、照度センサＳＳがＬＥＤ照明器具１の後方周囲の明るさを検知する。   The LED lighting device 1 includes an illuminance sensor SS that is electrically connected to the control unit 14 so that the LED element 7 is turned on at night from sunset to dawn by detecting ambient illuminance. The illuminance sensor SS is held in the holder 21 that does not transmit light attached to the sensor board 15H that is electrically connected to the control board 15, and the illuminance sensor SS detects the illuminance around the back of the LED lighting apparatus 1. As shown, the holder 21 is held by a daylighting window (also called a daylighting hole) 2H formed on the rear wall 2B of the main body 2. The holder 21 is opened rearward so that ambient light enters the illuminance sensor SS, and a translucent cover 22 is inserted and held in the daylighting window 2H so as to block the opening and the daylighting window 2H in a waterproof state. The translucent cover 22 and the holder 21 are combined, and the holder 21 is held in the daylighting window 2H. The daylighting window 2 </ b> H is formed on the rear wall 2 </ b> B on the lateral side of the attachment unit 10 so as to be positioned away from the attachment unit 10, and the illuminance sensor SS detects the brightness around the back of the LED lighting apparatus 1.

ＬＥＤ照明器具１へ外部電源から電力供給を行うために、ＬＥＤ照明器具１へ供給される外部電源ライン２３は、本体２の後壁２Ｂに形成した貫通孔２４に挿入される絶縁ゴム製のブッシング２５を貫通し、その先端に取り付けた電源コネクタ２６が制御部１４の電源部のコネクタに電気的に接続される。   In order to supply power to the LED lighting apparatus 1 from an external power source, the external power supply line 23 supplied to the LED lighting apparatus 1 is an insulating rubber bushing inserted into a through hole 24 formed in the rear wall 2B of the main body 2. A power connector 26 that penetrates through 25 and is attached to the tip of the connector 25 is electrically connected to the connector of the power supply unit of the control unit 14.

配光ユニット８を構成する分離配光ユニット８Ｐ、８Ｑは、ＬＥＤ素子７の配列に合わせて、前後に間隔を存してＬＥＤ基板５の下側面に重ね合わせ状態で組み合わされ、その板状部８１がＬＥＤ基板５を貫通して、一列配置の３個の取り付けボス１３Ｂの中間を除き前後の取り付けボス１３Ｂにそれぞれネジ９で取り付けられる。
分離配光ユニット８Ｐ、８ＱとＬＥＤ素子７の配列については、２列状態のＬＥＤ素子７のうち、前側の８個のＬＥＤ素子７が前側の分離配光ユニット８Ｐと対応配置され、後側の８個のＬＥＤ素子７が後側の分離配光ユニット８Ｑと対応配置され、図１２に示すように、前側の８個のＬＥＤ素子７に前側の分離配光ユニット８Ｐの第１の配光特性部８３Ａの夫々が対応し、後側の８個のＬＥＤ素子７に後側の分離配光ユニット８Ｑの第１の配光特性部８３Ａの夫々が対応し、図１５に示すような左右方向に長い配光となる。図１５に示す波紋状の線は、照明器具１に近い領域の照度が高く、遠くなるにしたがって照度が低下する状態の説明用である。 The separated light distribution units 8P and 8Q constituting the light distribution unit 8 are combined in an overlapped state on the lower surface of the LED substrate 5 with a space in the front and rear according to the arrangement of the LED elements 7, and the plate-like portion 81 penetrates the LED board 5 and is attached to the front and rear mounting bosses 13B with screws 9 except for the middle of the three mounting bosses 13B arranged in a row.
Regarding the arrangement of the separate light distribution units 8P, 8Q and the LED elements 7, among the LED elements 7 in the two rows, the front eight LED elements 7 are arranged corresponding to the front separate light distribution unit 8P, and the rear Eight LED elements 7 are arranged to correspond to the rear separated light distribution unit 8Q, and as shown in FIG. 12, the first eight light emitting elements 7 have first light distribution characteristics of the front separated light distribution unit 8P. Each of the portions 83A corresponds to each of the eight LED elements 7 on the rear side, and each of the first light distribution characteristic portions 83A of the rear separated light distribution unit 8Q corresponds to the horizontal direction as shown in FIG. Long light distribution. The ripple-shaped line shown in FIG. 15 is for explanation of a state in which the illuminance in the area close to the lighting fixture 1 is high and the illuminance decreases as the distance increases.

配光ユニット８を構成する前側配光ユニット８Ｐと後側配光ユニット８Ｑは、ＬＥＤ照明器具１の前後方向に対して、左右方向に楕円形、長円形等のように長く延びる左右方向の配光特性が形成されるように、配光部８２として、ＬＥＤ素子７ごとに所定配光の出射光を形成する第１の配光特性部８３Ａを形成している。このため、第１の配光特性部８３Ａは、図１、図２、図５、図６、図１３、図１４から明らかなように、板状部８１からかまぼこ形態または米俵の半分の形態のように、断面が略一定の半円形で以って左右方向に長く端部が球面状をなして下方へ突出するレンズ構成であり、中央位置の内部にＬＥＤ素子７が侵入する下方に向けて窄む窪み９３が形成されている。
また、第１の配光特性部８３Ａの下方へ突出するレンズ構成の他の形態としては、ＬＥＤ素子７の出射光がレンズを通過して略均一配光となるようにするために、中央位置に板状部８１方向へ曲線で窪みを形成する形態である。即ち、板状部８１からかまぼこ形態または米俵の半分の形態のように、断面が略一定の半円形で以って左右方向に長く端部が球面状をなし、且つ中央位置に板状部８１方向へ曲線で窪み、この窪みに対応して内部にＬＥＤ素子７が侵入する下方に向けて窄む窪み９３が形成される形態である。
実施例では、各配光特性部８３Ａからの出射光による配光は、同じ配光形態となる構成であるが、ＬＥＤ照明器具１の求める照射形態に応じて、それぞれ異なる配光形態となる構成でもよい。 The front-side light distribution unit 8P and the rear-side light distribution unit 8Q constituting the light distribution unit 8 are arranged in the left-right direction extending long like an ellipse or an oval in the left-right direction with respect to the front-rear direction of the LED lighting apparatus 1. A first light distribution characteristic portion 83 </ b> A that forms emitted light with a predetermined light distribution for each LED element 7 is formed as the light distribution portion 82 so that the light characteristics are formed. For this reason, the first light distribution characteristic portion 83A has a kamaboko shape or a half shape of rice bran as shown in FIGS. 1, 2, 5, 6, 6, 13, and 14. As shown in the figure, the lens has a semicircular cross section having a substantially constant semi-circular shape and a long end in the left-right direction. The end is spherical and protrudes downward, and is directed downward where the LED element 7 enters the center position. A recess 93 is formed.
Further, as another form of the lens configuration that protrudes downward from the first light distribution characteristic portion 83A, in order to allow the emitted light of the LED element 7 to pass through the lens and have a substantially uniform light distribution, the center position It is a form which forms a hollow with a curve in the plate-shaped part 81 direction. That is, the plate-like portion 81 has a semicircular shape with a substantially constant cross section, like a half-shaped shape of rice bran or a half of rice bran, is long in the left-right direction, has a spherical end, and has a plate-like portion at the center position. It is a form in which a dent 93 is formed in a curved line in the 81 direction, and a dent 93 is formed corresponding to the dent and is narrowed downward in which the LED element 7 enters.
In the embodiment, the light distribution by the light emitted from each light distribution characteristic portion 83A is the same light distribution form, but the light distribution form is different depending on the irradiation form required by the LED lighting device 1. But you can.

なお、図面に示す第１の配光特性部８３Ａは、中央部に長さ方向の直線が描かれ、この直線の前後端部から４本の斜線が描かれているが、これはコンピュータ作図によって生じる曲面の表示であり、配光特性部８３Ａの形態は上記のように、断面が略一定の半円形状の長さの両端部が球面形状のレンズ構成である。   In the first light distribution characteristic portion 83A shown in the drawing, a straight line in the length direction is drawn at the center, and four oblique lines are drawn from the front and rear ends of this straight line. The resulting curved surface is displayed, and the light distribution characteristic portion 83A has a semi-circular length with a substantially constant cross section, as described above, and has a spherical lens structure.

取り付け部１０は、電柱等の支柱ＰＬに取り付けバンド３０によって取り付ける第１取り付け部１０１と、支柱ＰＬに代わり先端部が横へ延びる円筒状または円柱状のポールＰＰの先端部が挿入される第２取り付け部１０２を備えており、第１取り付け部１０１と第２取り付け部１０２は本体２と一体に形成される。   The mounting portion 10 includes a first mounting portion 101 that is attached to a support pole PL such as a power pole by a mounting band 30 and a second end portion in which a tip end portion of a cylindrical or columnar pole PP is inserted instead of the support column PL. An attachment portion 102 is provided, and the first attachment portion 101 and the second attachment portion 102 are formed integrally with the main body 2.

第２取り付け部１０２は、ポールＰＰの斜め上方に向く先端部が挿入されるように、本体２の後壁２Ｂに連続して後方へ延びる円筒状をなし、その円筒状の前面は本体２の後壁２Ｂで塞がれ、その円筒状の後面は解放してポールＰＰの先端部ＰＰ１が挿入される挿入開口１０２Ｋを有する形態である。また、第２取り付け部１０２は、円筒状の後端面１０２Ｒは、支柱ＰＬの柱面（周面）が接触しないような逃げ部となる曲面形状をなす。このため、円筒状の後端面１０２Ｒの曲面は、好ましくは、支柱ＰＬの柱面（周面）の曲面と同等または若干小さな半径で描かれる曲面形状である。   The second attachment portion 102 has a cylindrical shape extending continuously rearward from the rear wall 2B of the main body 2 so that a tip portion facing obliquely upward of the pole PP is inserted. The cylindrical rear surface is closed by the rear wall 2B and has an insertion opening 102K into which the distal end PP1 of the pole PP is inserted. Further, in the second attachment portion 102, the cylindrical rear end surface 102R has a curved surface shape that serves as an escape portion so that the column surface (circumferential surface) of the support column PL does not come into contact. For this reason, the curved surface of the cylindrical rear end surface 102R is preferably a curved surface drawn with a radius equal to or slightly smaller than the curved surface of the column surface (circumferential surface) of the support column PL.

第１取り付け部１０１は、第２取り付け部１０２と一体化する状態で、第２取り付け部１０２の左右両側に並行状態に配置された縦方向の板状の左右取り付け板部１０１Ｂで構成される。左右取り付け板部１０１Ｂの後端面１０１Ｒは、支柱ＰＬの柱面（周面）に縦方向に沿う直線状をなす。左右取り付け板部１０１Ｂと第２取り付け部１０２には、取り付けバンド３０が挿通され係止する縦方向に長い取り付け孔３１を有する。   The first attachment portion 101 is composed of vertical plate-like left and right attachment plate portions 101 </ b> B arranged in parallel on the left and right sides of the second attachment portion 102 in a state of being integrated with the second attachment portion 102. The rear end surface 101R of the left and right mounting plate portion 101B has a linear shape along the vertical direction on the column surface (circumferential surface) of the support column PL. The left and right attachment plate portions 101B and the second attachment portion 102 have attachment holes 31 that are long in the vertical direction through which the attachment band 30 is inserted and locked.

このように第１取り付け部１０１により支柱ＰＬにＬＥＤ照明器具１を取り付けた状態は、図８に示すように、ＬＥＤ照明器具１は、水平ラインに対して開口部２Ａのラインが、後部１Ａより前部１Ｂが角度αだけ若干高くなる傾斜状態を保つ。このような状態となるように、取り付け部１０１が構成されている。これによって、配光部８２のレンズ効果によって、ＬＥＤ照明器具１の前後方向軸に対して左右方向に長い配光が形成されるため、左右方向に長い道路面を照射することができる。   As shown in FIG. 8, the LED lighting device 1 is attached to the support column PL by the first mounting portion 101 as described above. As shown in FIG. The front portion 1B maintains an inclined state in which the front portion 1B is slightly raised by an angle α. The attachment portion 101 is configured so as to be in such a state. As a result, a light distribution that is long in the left-right direction with respect to the front-rear direction axis of the LED lighting device 1 is formed by the lens effect of the light distribution unit 82, so that a road surface that is long in the left-right direction can be irradiated.

また、第２取り付け部１０２によりＬＥＤ照明器具１を取り付けた状態は、図１１に示すようにＬＥＤ照明器具１は、水平ラインに対して開口部２Ａのラインが、後部１Ａより前部１Ｂが角度αだけ若干高くなる傾斜状態を保つ。このような状態となるように、取り付け部１０２が構成されている。これによって、配光部８２のレンズ効果によって、ＬＥＤ照明器具１の前後方向軸に対して左右方向に長い配光が形成されるため、左右方向に長い道路面を照射することができる。   Further, as shown in FIG. 11, the LED lighting fixture 1 is attached to the second mounting portion 102 as shown in FIG. Keep the slope slightly higher by α. The attachment portion 102 is configured so as to be in such a state. As a result, a light distribution that is long in the left-right direction with respect to the front-rear direction axis of the LED lighting device 1 is formed by the lens effect of the light distribution unit 82, so that a road surface that is long in the left-right direction can be irradiated.

このような第１の配光特性部８３Ａによって、ＬＥＤ素子７の発光がレンズ効果によって左右方向へ拡がり、ＬＥＤ照明器具１の下方を左右に通る道路面に左右方向に長く延びる配光が形成される。この状態の道路面の配光の一例を図１５に示す。   By such a first light distribution characteristic portion 83A, the light emission of the LED element 7 spreads in the left-right direction due to the lens effect, and a light distribution extending in the left-right direction is formed on the road surface passing left and right under the LED lighting fixture 1. The An example of the light distribution on the road surface in this state is shown in FIG.

上記のように、本体２の内部空間４は、前部から後部に向けて次第に深くなるように（開口部２Ａを基準とすれば次第に上方に高くなるように）形成しており、内部空間４には、熱伝導リブ１１の左右側面に沿って後部から前部に向けて斜め前方に上昇する空気通路が形成される。このため、取り付け部１０を支柱ＰＬに取付けた状態で、水平ラインに対して開口部２Ａのラインが略並行となる水平取り付け状態でも、同様の空気通路が形成される。
また、上記のように支柱ＰＬ等への取り付けによって、水平ラインに対して開口部２Ａのラインが、後部１Ａより前部１Ｂが角度αだけ若干高くなる傾斜取り付け状態を保つことにより、水平取り付け状態よりも更に斜め前方に上向くため、内部空間４には、熱伝導リブ１１の左右側面に沿って後部から前部に向けて斜め前方に上昇する空気通路が形成される。
このため、本体２内の内部空間４では、熱伝導リブ１１の左右側面に沿って後部空間４Ｂから前部空間４Ａへ向けた空気の流れが生じ易くなる。 As described above, the internal space 4 of the main body 2 is formed so as to gradually become deeper from the front part toward the rear part (so as to gradually increase upward with the opening 2A as a reference). Is formed with an air passage that rises obliquely forward from the rear toward the front along the left and right side surfaces of the heat conducting rib 11. For this reason, a similar air passage is formed even in a horizontal attachment state in which the line of the opening 2A is substantially parallel to the horizontal line in a state where the attachment portion 10 is attached to the support column PL.
In addition, by attaching to the support PL as described above, the line of the opening 2A is maintained in an inclined attachment state in which the front part 1B is slightly higher than the rear part 1A by an angle α with respect to the horizontal line. Further, the air passage is formed in the internal space 4 so as to rise obliquely forward from the rear to the front along the left and right side surfaces of the heat conducting rib 11.
For this reason, in the internal space 4 in the main body 2, an air flow from the rear space 4 </ b> B toward the front space 4 </ b> A tends to occur along the left and right side surfaces of the heat conducting rib 11.

図示のように並行な熱伝導リブ１１を形成する場合は、並行な熱伝導リブ１１とＬＥＤ基板５によって囲まれたトンネル状の第１空気通路１Ｐと、第１空気通路の左右両外側となる位置で熱伝導リブ１１の外側面に沿った第２空気通路１Ｑが、後部から前部に向けて斜め前方に上昇する形態で内部空間４に形成されている。第１空気通路１Ｐの前端と後端が解放するように、第１空気通路１Ｐと第２空気通路１Ｑは、並行な熱伝導リブ１１の前端と後端で連通している。   When the parallel heat conductive ribs 11 are formed as illustrated, the tunnel-shaped first air passage 1P surrounded by the parallel heat conductive ribs 11 and the LED substrate 5 and the left and right outer sides of the first air passage are provided. The second air passage 1Q along the outer surface of the heat conducting rib 11 at a position is formed in the internal space 4 in a form that rises obliquely forward from the rear toward the front. The first air passage 1P and the second air passage 1Q communicate with each other at the front end and the rear end of the parallel heat conducting ribs 11 so that the front end and the rear end of the first air passage 1P are released.

この様な構成によって、照明器具１内に空気流通が形成される。
その一つとして、第１空気通路１Ｐの温度よりも熱伝導リブ１１の外側面に沿う第２空気通路１Ｑの温度が相対的に低くなり易い。このため、制御部１４の発熱とＬＥＤ素子７の発熱によって温められた内部空間４の空気は、主として後部空間４Ｂから前部空間４Ａに向けて第１空気通路１Ｐを通り、熱伝導リブ１１の先端部から第２空気通路１Ｑを経て後部空間４Ｂ側へ帰還し、再び第１空気通路１Ｐを流れる空気流通が形成される。この場合、空気は熱伝導リブ１１及び本体２の壁面と接触しつつ流れるため、本体２への熱伝達が促進される。
図５に示すように、ＬＥＤ基板５の左右両端部が第２空気通路１Ｑの下側を覆う状態とすることにより、第２空気通路１Ｑの空気流通がスムーズになる。
このような空気循環は、照明器具１の周囲温度によって変化することもある。 With such a configuration, an air flow is formed in the luminaire 1.
As one of them, the temperature of the second air passage 1Q along the outer surface of the heat conducting rib 11 tends to be relatively lower than the temperature of the first air passage 1P. For this reason, the air in the internal space 4 heated by the heat generated by the control unit 14 and the heat generated by the LED element 7 mainly passes through the first air passage 1P from the rear space 4B toward the front space 4A, and the heat conduction ribs 11 An air flow that returns from the front end portion to the rear space 4B side through the second air passage 1Q and flows through the first air passage 1P is formed. In this case, since air flows while contacting the heat conductive rib 11 and the wall surface of the main body 2, heat transfer to the main body 2 is promoted.
As shown in FIG. 5, when the left and right ends of the LED substrate 5 cover the lower side of the second air passage 1Q, the air flow in the second air passage 1Q becomes smooth.
Such air circulation may vary depending on the ambient temperature of the luminaire 1.

また、もう一つの空気循環として、制御部１４の発熱とＬＥＤ素子７の発熱によって温められた内部空間４の空気は、主として第１空気通路１Ｐと第２空気通路１Ｑを通って本体２の後部１Ａから前部１Ｂに向けて流れ、熱伝導リブ１１の先端部からＬＥＤ基板５と透光性カバー３の間の空間へ流れ、ＬＥＤ基板５と透光性カバー３の間の空間を経て後部空間４Ｂ側へ帰還し、再び第１空気通路１Ｐと第２空気通路１Ｑを流れる空気流通が形成される。この場合、空気は熱伝導リブ１１及び本体２の壁面と接触しつつ流れるため、本体２への熱伝達が促進される。
図５に示すように、ＬＥＤ基板５の左右両端部が第２空気通路１Ｑの下側を覆う状態とすることにより、第２空気通路１Ｑの空気流通がスムーズになる。
このような空気流通は、照明器具１の周囲温度によって変化することもある。 Further, as another air circulation, the air in the internal space 4 heated by the heat generated by the control unit 14 and the heat generated by the LED element 7 mainly passes through the first air passage 1P and the second air passage 1Q, and the rear portion of the main body 2. It flows from 1A toward the front portion 1B, flows from the tip of the heat conducting rib 11 to the space between the LED substrate 5 and the translucent cover 3, and passes through the space between the LED substrate 5 and the translucent cover 3 to the rear portion Returning to the space 4B side, an air flow flowing through the first air passage 1P and the second air passage 1Q again is formed. In this case, since air flows while contacting the heat conductive rib 11 and the wall surface of the main body 2, heat transfer to the main body 2 is promoted.
As shown in FIG. 5, when the left and right ends of the LED substrate 5 cover the lower side of the second air passage 1Q, the air flow in the second air passage 1Q becomes smooth.
Such air flow may change depending on the ambient temperature of the lighting fixture 1.

上記のように、ＬＥＤ素子７の発光に伴い発生する熱は、ＬＥＤ基板５から熱伝導リブ１１を通して本体２から放熱されるルートによって放熱され、また空気循環によって本体２との接触が促進され、ＬＥＤ素子７の発光に伴い発生する熱及び制御部１４の発する熱が本体２から良好に放熱される。   As described above, the heat generated by the light emission of the LED element 7 is radiated by the route radiated from the main body 2 through the heat conducting rib 11 from the LED substrate 5, and the contact with the main body 2 is promoted by air circulation, The heat generated with the light emission of the LED element 7 and the heat generated by the control unit 14 are radiated from the main body 2 well.

また本体２は、１部品によって構成でき部品点数も少なく組み立て工数も少なくなる。更に、熱伝導リブ１１と、取り付けボス１３及び１６によって、ＬＥＤ基板５と制御基板１５の支持が安定し、且つ放熱効果が良好に行われる照明器具となる。   Further, the main body 2 can be constituted by one part, and the number of parts is small and the number of assembling steps is reduced. Furthermore, the heat conduction rib 11 and the mounting bosses 13 and 16 provide a lighting fixture in which the support of the LED board 5 and the control board 15 is stable and the heat dissipation effect is performed well.

ＬＥＤ基板５は、所謂金属基板でもよいが、低コスト化として、電気絶縁性の一枚の合成樹脂製を採用する。上記のような本体２、ＬＥＤ基板５、制御部１４、熱伝導リブ１１の関係構成は、ＬＥＤ基板５が電気絶縁性の平板である場合に、ＬＥＤ素子７の発熱を効果的に放熱する効果がある。
なお、電気絶縁性の平板のＬＥＤ基板５のＬＥＤ素子７が実装された下面とは反対側の上側面に、熱伝導被膜を形成することにより、ＬＥＤ素子７の発熱は、ＬＥＤ基板５とその上側の熱伝導被膜を通して熱伝導リブ１１から本体２に伝達され、効果的な放熱が行える。 The LED substrate 5 may be a so-called metal substrate, but an electrically insulating synthetic resin is used for cost reduction. The related configuration of the main body 2, the LED substrate 5, the control unit 14, and the heat conducting rib 11 as described above is an effect of effectively dissipating the heat generated by the LED element 7 when the LED substrate 5 is an electrically insulating flat plate. There is.
In addition, by forming a heat conductive film on the upper surface opposite to the lower surface on which the LED element 7 of the electrically insulating flat LED substrate 5 is mounted, the heat generated by the LED element 7 It is transmitted from the heat conductive rib 11 to the main body 2 through the upper heat conductive film, and effective heat dissipation can be performed.

上記のように、照明器具１は、
下面に開口部２Ａを形成した内部空間４を有し開口部２Ａに沿って内部空間４に収容された発光部６を備え支柱等への取り付け部１０を後部に備える金属製の本体２と、開口部２Ａを塞ぐように本体２に組み合わされる透光性カバー３を備える前後方向に長い形態であり、
発光部６は、ＬＥＤ基板５の下側面に前後方向に複数のＬＥＤ素子７が直線状に配置された構成であり、
本体２は、内部空間４のうちの大半を占める前部空間４Ａに、直線状に配置されたＬＥＤ素子７の裏側に対応して、ＬＥＤ基板５の上面が当接する前後方向に延びる熱伝導リブ１１を一体に有し、
内部空間４のうちの前部空間４Ａに連続する後部空間４Ｂに収容保持されるＬＥＤ素子７の制御部１４を備え、
内部空間４は、熱伝導リブ１１の左右側面に沿って後部から前部に向けて斜め前方に上昇する空気通路を有する。 As mentioned above, the lighting fixture 1 is
A metal main body 2 having an inner space 4 having an opening 2A formed on the lower surface, a light emitting portion 6 accommodated in the inner space 4 along the opening 2A, and a mounting portion 10 for a column or the like at the rear; It is a long form in the front-rear direction including a translucent cover 3 combined with the main body 2 so as to close the opening 2A,
The light emitting unit 6 has a configuration in which a plurality of LED elements 7 are linearly arranged in the front-rear direction on the lower surface of the LED substrate 5.
The main body 2 is a heat conducting rib extending in the front-rear direction in which the upper surface of the LED substrate 5 abuts the front space 4A occupying most of the internal space 4 corresponding to the back side of the LED elements 7 arranged linearly. 11 integrally,
The controller 14 of the LED element 7 that is accommodated and held in the rear space 4B that is continuous with the front space 4A of the internal space 4 is provided,
The internal space 4 has an air passage that rises obliquely forward from the rear to the front along the left and right side surfaces of the heat conducting rib 11.

また、照明器具１は、
下面に開口部２Ａを形成した内部空間４を有し開口部２Ａに沿って内部空間４に収容された発光部６を備え支柱等への取り付け部１０を後部に備える金属製の本体２と、開口部２Ａを塞ぐように本体２に組み合わされる透光性カバー３を備える前後方向に長い形態であり、
発光部６は、ＬＥＤ基板５の下側面に前後方向に直線状配置の複数のＬＥＤ素子７が複数列状態に配置され、
本体２は、内部空間４のうちの大半を占める前部空間４Ａに、直線状に配置されたＬＥＤ素子７の各列の裏側に対応して、ＬＥＤ基板５の上面が当接する前後方向に並行に延びる熱伝導リブ１１を一体に有し、
内部空間４のうちの前部空間４Ａに連続する後部空間４Ｂに本体２に取り付けられたＬＥＤ素子７の制御部１４を備え、
熱伝導リブ１１相互間に形成されるトンネル状の第１空気通路１Ｐ及び熱伝導リブ１１の外側面に沿って形成される第２空気通路１Ｑが、後部から前部に向けて斜め前方に上昇する形態で内部空間４に形成されている。 Moreover, the lighting fixture 1 is
A metal main body 2 having an inner space 4 having an opening 2A formed on the lower surface, a light emitting portion 6 accommodated in the inner space 4 along the opening 2A, and a mounting portion 10 for a column or the like at the rear; It is a long form in the front-rear direction including a translucent cover 3 combined with the main body 2 so as to close the opening 2A,
The light emitting unit 6 includes a plurality of LED elements 7 linearly arranged in the front-rear direction on the lower surface of the LED substrate 5 in a plurality of rows.
The main body 2 is parallel to the front-rear direction in which the upper surface of the LED substrate 5 contacts the front space 4A occupying most of the internal space 4 corresponding to the back side of each row of the LED elements 7 arranged linearly. A heat conducting rib 11 extending to
The controller 14 of the LED element 7 attached to the main body 2 is provided in the rear space 4B continuous with the front space 4A of the internal space 4,
The tunnel-shaped first air passage 1P formed between the heat conducting ribs 11 and the second air passage 1Q formed along the outer surface of the heat conducting rib 11 rise obliquely forward from the rear toward the front. It is formed in the internal space 4 in such a form.

また、照明器具１は、
ＬＥＤ基板５は開口部２Ａに沿って前部空間４Ａ内の下部に配置され、
制御部１４は、熱伝導リブ１１の後方の後部空間４ＢにＬＥＤ基板５よりも上方位置で本体２に熱伝導状態の取り付けである。 Moreover, the lighting fixture 1 is
The LED substrate 5 is arranged at the lower part in the front space 4A along the opening 2A,
The control unit 14 is attached in a heat conductive state to the main body 2 at a position higher than the LED substrate 5 in the rear space 4B behind the heat conductive rib 11.

また、照明器具１は、
制御部１４は電気部品を取り付けた制御基板１５を有し、
ＬＥＤ基板５及び制御基板１５は、それぞれ本体２に一体形成の取り付けボスにネジ固定されている。 Moreover, the lighting fixture 1 is
The control unit 14 includes a control board 15 on which electrical components are attached.
The LED board 5 and the control board 15 are each screwed to a mounting boss formed integrally with the main body 2.

また、照明器具１は、
熱伝導リブ１１の後端は後部空間４Ｂに臨む位置であり、熱伝導リブ１１の前端は前部空間４Ａの前壁の後方位置である。 Moreover, the lighting fixture 1 is
The rear end of the heat conductive rib 11 is a position facing the rear space 4B, and the front end of the heat conductive rib 11 is a rear position of the front wall of the front space 4A.

また、照明器具１は、
並行の熱伝導リブ１１とＬＥＤ基板５によって囲まれたトンネル状の第１空気通路１Ｐと、第１空気通路１Ｐの左右両外側となる位置で熱伝導リブ１１の外側面に沿った第２空気通路１Ｑは、並行な熱伝導リブ１１の前端と後端で連通している。 Moreover, the lighting fixture 1 is
Tunnel-shaped first air passage 1P surrounded by parallel heat conduction ribs 11 and LED substrate 5, and second air along the outer surface of heat conduction ribs 11 at positions on both the left and right sides of first air passage 1P. The passage 1Q communicates with the front end and the rear end of the parallel heat conducting ribs 11.

次にグレア抑制構造について説明する。
本発明は、図１６に示すように、道路灯において、非照射面である道路の路面から鉛直方向ＶＴの高さ４．５ｍに設置された光源となる発光部６から出射される出射光のうち、発光部６の中心部における鉛直方向ＶＴから遠い地点で、路面から１．５ｍの高さにある人の目線の水平方向に対する所定の仰角以上の出射光が、前記人の目に入らないように遮ることによって、その人に対する眩しさ（グレア）を抑制する技術の提供である。 Next, the glare suppression structure will be described.
As shown in FIG. 16, in the present invention, in the road lamp, the emitted light emitted from the light emitting unit 6 serving as a light source installed at a height of 4.5 m in the vertical direction VT from the road surface which is a non-irradiated surface. Among them, at a point far from the vertical direction VT in the central portion of the light emitting unit 6, the emitted light exceeding a predetermined elevation angle with respect to the horizontal direction of the human eye line at a height of 1.5 m from the road surface does not enter the human eye. It is provision of the technique which suppresses the glare (glare) with respect to the person by obstructing like this.

この場合、照明器具に特別な遮光板を取り付けることなく、照明器具の必須構成部品の範囲内で上記のような眩しさ（グレア）を抑制する技術を達成することに特徴がある。   In this case, there is a feature in achieving a technique for suppressing the above glare (glare) within the range of the essential components of the lighting fixture without attaching a special light shielding plate to the lighting fixture.

上記のように、照明器具１は、第１取り付け部１０１または第２取り付け部１０２による取り付けのいずれにおいても、前後方向に長い照明器具１が道路幅方向に向かう前上がり状態となり、図１５に示すように、道路方向に長い配光を得る。   As described above, the luminaire 1 is in a state where the luminaire 1 that is long in the front-rear direction is moved upward in the road width direction in any of the attachment by the first attachment portion 101 or the second attachment portion 102, and is shown in FIG. So get a long light distribution in the road direction.

本体２は、図１、図５、図１７に示すように、本体２の開口部２Ａの周縁部２Ａ１を巡るように、下方へ突出するフランジ２Ｆを形成している。
本発明は、下面に開口部２Ａを有する不透光性の本体２の前記開口部２Ａに対応して発光部６が取り付けられ、発光部６の出射光が道路方向に配光される照明器具において、発光部６から道路方向に配光される出射光のうち、グレア抑制として、発光部６の鉛直方向に対して所定角度θ１以上の出射光が開口部２Ａの周縁で遮られる位置に、発光部６が本体２に取り付けられた構成である。
発光部６は、ＬＥＤ素子７が放射する光を所定の配光にて出射する部分であり、実施例では、ＬＥＤ素子７と、ＬＥＤ素子７ごとに所定の配光となる出射光を形成するレンズ形態の配光部８２を有する配光ユニット８によって構成している。 As shown in FIGS. 1, 5, and 17, the main body 2 has a flange 2 </ b> F that protrudes downward so as to go around the peripheral edge 2 </ b> A <b> 1 of the opening 2 </ b> A of the main body 2.
In the present invention, a light emitting unit 6 is attached corresponding to the opening 2A of the non-transparent main body 2 having an opening 2A on the lower surface, and the light emitted from the light emitting unit 6 is distributed in the road direction. In the light emitted from the light emitting unit 6 in the road direction, as the glare suppression, the emitted light having a predetermined angle θ1 or more with respect to the vertical direction of the light emitting unit 6 is blocked at the periphery of the opening 2A. The light emitting unit 6 is attached to the main body 2.
The light emitting unit 6 is a part that emits light emitted from the LED element 7 with a predetermined light distribution. In the embodiment, the light emitting unit 6 forms emitted light that has a predetermined light distribution for each LED element 7. The light distribution unit 8 includes a lens-shaped light distribution unit 82.

この具体的実施例として、前記のように、路面から１．５ｍの高さにある人（歩行者）の目線の水平方向に対する所定の仰角θ４の出射光を遮るために、この仰角θ４を５°未満とし、グレア抑制の範囲である前記所定角度θ１を規定の８５°以上とする場合について記載する。   As a specific example, as described above, the elevation angle θ4 is set to 5 in order to block the emitted light having a predetermined elevation angle θ4 with respect to the horizontal direction of the line of sight of a person (pedestrian) at a height of 1.5 m from the road surface. Described below is a case where the predetermined angle θ1, which is a range of glare suppression, is set to 85 ° or more as specified.

このため、下面に開口部２Ａを有する不透光性の本体２の開口部２Ａに対応して発光部６が取り付けられ、発光部６の出射光が道路方向に配光される照明器具１において、図１７に示すように、発光部６からの出射光の出射範囲は、発光部６の中央における鉛直方向ＶＴに対する角度（鉛直角）θ２＝９０°であり、その中で、グレアを抑制する範囲は角度θ４＝５°未満である。この場合、発光部６から道路方向に配光される出射光のうち、発光部６の鉛直方向ＶＴに対する角度（鉛直角）でθ１＝８５°以上の出射光が、開口部２Ａの周縁下端であるフランジ２Ｆの下端で遮られる位置に、発光部６が本体２に取り付けられる構成としている。   For this reason, in the lighting fixture 1 in which the light emission part 6 is attached corresponding to the opening part 2A of the translucent main body 2 which has the opening part 2A in the lower surface, and the emitted light of the light emission part 6 is distributed in the road direction As shown in FIG. 17, the emission range of the emitted light from the light emitting unit 6 is an angle (vertical angle) θ2 = 90 ° with respect to the vertical direction VT at the center of the light emitting unit 6, and suppresses glare therein. The range is less than the angle θ4 = 5 °. In this case, out of the emitted light distributed from the light emitting unit 6 in the road direction, the emitted light having an angle (vertical angle) of θ1 = 85 ° or more with respect to the vertical direction VT of the light emitting unit 6 is at the lower end of the periphery of the opening 2A. The light emitting unit 6 is attached to the main body 2 at a position blocked by the lower end of a certain flange 2F.

発光部６はＬＥＤ基板５に取り付けたＬＥＤ素子７によって形成され、発光部６からの出射光は、ＬＥＤ素子７の発光に基づきＬＥＤ素子７ごとに形成した配光特性部８３Ａから発せられ、透光性カバー３を透過して図１５に示すように、ＬＥＤ照明器具１の前後方向軸に対して道路方向である左右方向に長い配光特性を有する。   The light emitting unit 6 is formed by the LED element 7 attached to the LED substrate 5, and the light emitted from the light emitting unit 6 is emitted from the light distribution characteristic unit 83 </ b> A formed for each LED element 7 based on the light emission of the LED element 7. As shown in FIG. 15 through the light cover 3, the LED lighting device 1 has a light distribution characteristic that is long in the left-right direction, which is the road direction, with respect to the front-rear direction axis.

これによって、１個の照明器具１から道路方向である左右方向に向けて、角度θ３＝１７０°の範囲で出射光が発せられ、照明器具１の左右において角度θ４の範囲でグレアが抑制される。   As a result, emitted light is emitted in the range of angle θ3 = 170 ° from one lighting fixture 1 in the left-right direction that is the road direction, and glare is suppressed in the range of angle θ4 on the left and right sides of the lighting fixture 1. .

これに係るＬＥＤ基板５と配光ユニット８の本体２への配置について、上記のように、ＬＥＤ基板５は、取り付けボス１３に上面が当接する状態で４隅の孔５Ｐを通してネジ１２で取り付けボス１３に取り付けられ、配光ユニット８は、その板状部８１がＬＥＤ基板５の下側面に重ね合わせ状態で以って、ＬＥＤ基板５を貫通して他の取り付けボス１３Ｂにネジ９で取り付けられる。この状態で、発光部６からの出射光の出射範囲を限定する部分となる配光特性部８３Ａの基部と板状部８１との交点ＢＴが、フランジ２Ｆよりも下方へ突出しない状態となり、ＬＥＤ基板５と配光ユニット８が、開口部２Ａに沿って内部空間４に配置される状態となる。   Regarding the arrangement of the LED substrate 5 and the light distribution unit 8 on the main body 2 according to this, as described above, the LED substrate 5 is attached to the mounting boss 13 with the screws 12 through the holes 5P at the four corners in a state where the upper surface is in contact with the mounting boss 13. The light distribution unit 8 is attached to the other mounting boss 13 </ b> B with a screw 9 through the LED board 5 with the plate-like portion 81 being superimposed on the lower surface of the LED board 5. . In this state, the intersection BT between the base portion of the light distribution characteristic portion 83A and the plate-like portion 81, which is a portion that limits the emission range of the emitted light from the light emitting portion 6, does not protrude downward from the flange 2F, and the LED The board | substrate 5 and the light distribution unit 8 will be in the state arrange | positioned in the internal space 4 along 2 A of opening parts.

図示の形態は、複数のＬＥＤ素子７が所定間隔を存して前後方向に直線的に一列に配置されたものが左右２列配置の構成であるが、これに限定されない。
例えば、前後方向に長いＬＥＤ基板５の左右間の中央を前後方向に延びる軸線上に、複数のＬＥＤ素子７が所定間隔を存して前後方向に直線的に一列のみに配置されたものとし、この各ＬＥＤ素子７に対応する配光部８または配光特性部８３Ａを板状部８１に形成した配光ユニット８をＬＥＤ基板５の下側面に配置し、発光部６の中央における鉛直方向ＶＴに対する所定角度（鉛直角でθ１＝８５°等）以上の出射光が、開口部２Ａの周縁下端で遮られる位置に、発光部６が本体２に取り付けられる構成とするものでもよい。
更にＬＥＤ素子７を３列構成とし、上記同様の構成とするものでもよい。 The illustrated form is a configuration in which a plurality of LED elements 7 are linearly arranged in a line in the front-rear direction with a predetermined interval, but the arrangement is not limited to this.
For example, it is assumed that a plurality of LED elements 7 are linearly arranged in a single line in the front-rear direction at a predetermined interval on an axis extending in the front-rear direction at the center between the left and right of the LED substrate 5 that is long in the front-rear direction, A light distribution unit 8 in which a light distribution portion 8 or a light distribution characteristic portion 83A corresponding to each LED element 7 is formed on a plate-like portion 81 is disposed on the lower side surface of the LED substrate 5, and a vertical direction VT at the center of the light emitting portion 6 is provided. The light-emitting part 6 may be configured to be attached to the main body 2 at a position where the emitted light with a predetermined angle (vertical angle θ1 = 85 ° or the like) or more is blocked by the lower end of the periphery of the opening 2A.
Further, the LED elements 7 may have a three-row configuration and the same configuration as described above.

上記のように、本発明によって、発光部６から開口部の左右の周縁部を通る出射光のうち、鉛直角で８５°以上の範囲が、開口部２Ａの左右の周縁部によって制限されるため、この角度未満の範囲では路面照射が良好となり、特別なグレア抑制部材を設ける必要がなくグレア抑制が良好となる。また、発光部６の取り付けも安定したものとなる。   As described above, according to the present invention, the range of 85 ° or more in vertical angle among the emitted light passing from the light emitting portion 6 to the left and right peripheral portions of the opening is limited by the left and right peripheral portions of the opening 2A. When the angle is less than this angle, the road surface irradiation is good, and it is not necessary to provide a special glare suppressing member, and the glare suppression is good. Moreover, the attachment of the light emitting unit 6 is also stable.

また本発明によって、上記のようなグレア抑制と共に、ＬＥＤ素子７の発光に伴い発生する熱は、ＬＥＤ基板５から熱伝導リブ１１を通して本体２から放熱されるルートによって放熱される。また、ＬＥＤ基板５の上側に熱伝導リブ１１に沿って形成される前後方向の空気通路によって、内部空間４の空気は流動し、ＬＥＤ素子７の発光に伴い発生する熱及び制御部１４の発する熱が本体２から放熱される。   Further, according to the present invention, together with the above-described glare suppression, the heat generated due to the light emission of the LED element 7 is dissipated by the route radiated from the main body 2 through the heat conducting rib 11 from the LED substrate 5. Also, the air in the internal space 4 flows by the air passage in the front-rear direction formed along the heat conducting rib 11 on the upper side of the LED substrate 5, and the heat generated by the light emission of the LED element 7 and the control unit 14 emit. Heat is dissipated from the main body 2.

本発明は、発明の範囲内における種々の変更が可能であり、ＬＥＤ照明器具１の形態も上記に限定されることなく、種々の形態のＬＥＤ照明器具１に適用可能である。
このため、上記では、グレアを抑制する範囲が、発光部６の鉛直方向ＶＴに対する角度（鉛直角）でθ１＝８５°以上の範囲としたが、規定が８０°以上であれば、それに合致するように、上記同様の構成とする。 The present invention can be variously modified within the scope of the invention, and the form of the LED lighting apparatus 1 is not limited to the above, and can be applied to various forms of the LED lighting apparatus 1.
For this reason, in the above, the range in which glare is suppressed is set to a range of θ1 = 85 ° or more in terms of the angle (vertical angle) with respect to the vertical direction VT of the light emitting unit 6. Thus, it is set as the same structure as the above.

上記図示の実施例では、配光ユニット８を分離配光ユニット８Ｐ、８Ｑで構成したが、これに替わって、例えば配光ユニット８を分離配光ユニット８Ｐのみの１枚とする場合は、その分離配光ユニット８Ｐは、一列配置の３個の取り付けボス１３Ｂの中間のものにネジ９で取り付けることにより、上記同様の構成及び作用が達成できる。   In the embodiment shown in the figure, the light distribution unit 8 is composed of the separate light distribution units 8P and 8Q. Instead, for example, when the light distribution unit 8 is only one of the separate light distribution units 8P, The separation light distribution unit 8P can achieve the same configuration and operation as described above by being attached to the middle one of the three attachment bosses 13B arranged in a row with the screw 9.

また、配光ユニット８を１枚とする場合、前後方向に長いＬＥＤ基板５の左右間の中央を前後方向に延びる軸線上に、複数のＬＥＤ素子７が所定間隔を存して前後方向に直線的に一列のみに配置されたものとし、この各ＬＥＤ素子７に対応する配光部８または配光特性部８３Ａを板状部８１に形成した配光ユニット８をＬＥＤ基板５の下側面に配置し、発光部６の中央における鉛直方向ＶＴに対する所定角度（鉛直角でθ１＝８５°等）以上の範囲の出射光が、開口部２Ａの周縁下端で遮られる位置に、発光部６が本体２に取り付けられる構成とすることもできる。   When the light distribution unit 8 is a single sheet, a plurality of LED elements 7 are linearly arranged in the front-rear direction with a predetermined interval on the axis extending in the front-rear direction at the center between the left and right of the LED board 5 that is long in the front-rear direction. The light distribution unit 8 in which the light distribution portion 8 or the light distribution characteristic portion 83A corresponding to each LED element 7 is formed on the plate-shaped portion 81 is disposed on the lower surface of the LED substrate 5. Then, the light emitting unit 6 is located at a position where the emitted light in the range of a predetermined angle (vertical angle θ1 = 85 ° or the like) or more with respect to the vertical direction VT at the center of the light emitting unit 6 is blocked by the lower end of the periphery of the opening 2A. It can also be set as the structure attached to.

実施形態では透光性カバー３を備えるが、本発明は、透光性カバー３を設けずに、配光ユニット８が
透光性カバー３の役目を兼用するように、配光部８２を一体形成する板状部８１の平面積を広くして、
配光ユニット８が本体２の開口部２Ａの周縁を巡るフランジ２Ｆの内側において、開口部２Ａの全体を覆う大きさに形成する形態でも、同様の作用効果を奏することができる。 In the embodiment, the translucent cover 3 is provided. However, in the present invention, the light distribution unit 82 is integrated so that the light distribution unit 8 also serves as the translucent cover 3 without providing the translucent cover 3. Widen the plane area of the plate-like part 81 to be formed,
A similar effect can be obtained even when the light distribution unit 8 is formed in a size that covers the entire opening 2A inside the flange 2F around the periphery of the opening 2A of the main body 2.

本発明の照明器具１は、図１８及び図１９に示すように、制御部１４を絶縁シート１１０で覆うことにより、制御部１４が本体２及び保護カバー１８との接触を避け、更に照明器具１の点検等を行う作業者への感電防止等を行う構成である。図１８は図１において制御部１４を絶縁シートで覆った状態を示す照明器具の分解斜視図であり、図１と同じ構成であるため一部の符号を省略している。また、図１９は図２において制御部１４を絶縁シートで覆った状態を示す照明器具の縦断側面図であり、図２と同じ構成であるため一部の符号を省略している。   As shown in FIGS. 18 and 19, the lighting device 1 of the present invention covers the control unit 14 with an insulating sheet 110 so that the control unit 14 avoids contact with the main body 2 and the protective cover 18, and further the lighting device 1. It is the structure which performs the electric shock prevention etc. to the operator who performs inspection etc. of this. FIG. 18 is an exploded perspective view of a lighting fixture showing a state in which the control unit 14 is covered with an insulating sheet in FIG. 1 and has the same configuration as FIG. FIG. 19 is a longitudinal side view of the lighting fixture showing a state in which the control unit 14 is covered with an insulating sheet in FIG. 2, and a part of the reference numerals is omitted because it has the same configuration as FIG. 2.

絶縁シート１１０は、図１８に示すように、上辺１１１と下辺１１２とこれら両辺を連結する連結辺１１３を一体形成した略コ字状をなす電気絶縁性の合成樹脂製シートである。実施例の絶縁シート１１０は、厚さが略０．１９ｍｍのポリエステル製で構成し、上辺１１１と下辺１１２は、制御部１４全体を覆う平面積を有する大きさである。   As shown in FIG. 18, the insulating sheet 110 is an electrically insulating synthetic resin sheet having a substantially U shape integrally formed with an upper side 111, a lower side 112, and a connecting side 113 that connects both sides. The insulating sheet 110 of the embodiment is made of polyester having a thickness of approximately 0.19 mm, and the upper side 111 and the lower side 112 have a size that has a flat area covering the entire control unit 14.

絶縁シート１１０は、上辺１１１の四隅部分にそれぞれ４個の取り付けボス１６、１６Ｂが入り込む切欠き１１４を形成している。このため、連結辺１１３が制御基板１５の外側位置において上辺１１１と下辺１１２との間に制御部１４が位置するように絶縁シート１１０を組み合わせ、且つ四か所の切欠き１１４がそれぞれ４個の取り付けボス１６、１６Ｂの内側に一致する状態に、絶縁シート１１０を本体２の後部空間４Ｂに配置する。
これによって、図１８及び図１９に示すように、絶縁シート１１０は取り付けボス１６、１６Ｂによって位置決めされ、上辺１１１と下辺１１２の間に制御部１４が配置され、制御部１４の全体が絶縁シート１１０で覆われる状態となる。 The insulating sheet 110 has notches 114 into which the four mounting bosses 16 and 16B are respectively inserted at the four corners of the upper side 111. For this reason, the insulating sheet 110 is combined so that the connecting side 113 is positioned between the upper side 111 and the lower side 112 at the outer position of the control board 15, and the four notches 114 each have four notches 114. The insulating sheet 110 is disposed in the rear space 4B of the main body 2 so as to coincide with the inside of the mounting bosses 16 and 16B.
As a result, as shown in FIGS. 18 and 19, the insulating sheet 110 is positioned by the mounting bosses 16, 16 </ b> B, the control unit 14 is disposed between the upper side 111 and the lower side 112, and the entire control unit 14 is entirely insulated sheet 110. It becomes a state covered with.