CN107023786A - light distribution element, light source module and lighting device - Google Patents

The embodiment of the invention discloses a kind of light distribution element, light source module and lighting device, light distribution element includes：Incidence surface, in smooth inner sunken face shape and forms host cavity for housing luminescence unit；Exiting surface, it is oppositely arranged in smooth convex outward and with the incidence surface, there is thickness difference between the incidence surface and exiting surface, the color tolerance that the light that the exiting surface in thickness larger portion point is projected forms macula lutea and white light in hot spot is less than default value of chromatism.Because incidence surface and exiting surface are there is thickness difference between smooth surface shape and two faces in light distribution element, the light projected positioned at the upper exiting surface of thickness larger portion point forms macula lutea area in hot spot and is more than preset area.Pass through the size of preset area so that the concentration reduction of yellow light, then weaken macula lutea, it is ensured that the illuminating effect of lighting device.

Light distribution element, light source module and lighting device

Technical field

The present invention relates to lighting technical field, more particularly to a kind of light distribution element, light source module and lighting device.

Background technology

At present, lighting device generally comprises light source module, the power supply module of electric power is provided to light source module and is supported and is somebody's turn to do The matrix of light source module and power supply module.Light source module generally includes luminescence unit and is covered on luminescence unit light direction Light distribution element, light distribution element can adjust the direction of luminescence unit emitted light, to realize the illumination to target area.

However, because current luminescence unit has technical bottleneck, the light positioned at luminescence unit beam angle edge often can It is partially yellow, cause occur light macula lutea in lighting device institute illumination region, this light macula lutea seriously reduces the illumination of lighting device Effect.

The content of the invention

The purpose of the embodiment of the present invention is to provide a kind of light distribution element, light source module and lighting device, above-mentioned for solving Problem.

In order to solve the above technical problems, the embodiment of the present invention provides a kind of light distribution element, including：

Incidence surface, in smooth inner sunken face shape and forms host cavity for housing luminescence unit；

Exiting surface, is oppositely arranged in smooth convex outward and with the incidence surface, the incidence surface and exiting surface it Between there is thickness difference, the light that the exiting surface in thickness larger portion point is projected forms the color tolerance of macula lutea and white light in hot spot Difference is less than default value of chromatism.

It is preferred that, the default value of chromatism is 4.

It is preferred that, offset distance is wide in luminescence unit between the central point of the center of the luminescence unit and the exiting surface The 20% of degree.

It is preferred that, offset distance is in 0.55mm scopes between the central point of the center of the luminescence unit and the exiting surface It is interior.

It is preferred that, the exiting surface includes central point, and the central point of the exiting surface and the central point of incidence surface are vertical Stagger on direction.

It is preferred that, the incidence surface and exiting surface include being used for dividing the traverse and slitter line of four-quadrant, it is described enter Smooth surface and exiting surface are in four-quadrant symmetrical.

It is preferred that, along the traverse of the exiting surface, thickness has between the incidence surface and exiting surface：Exiting surface center The thickness of point and incidence surface is minimum, is in increase trend and symmetrical in the thickness of incidence surface central point both sides and exiting surface.

It is preferred that, along the slitter line of the incidence surface, thickness has between the incidence surface and exiting surface：Along the rip cutting Line is in increase trend.

It is preferred that, projected length in the horizontal plane, the traverse of the incidence surface is shorter than slitter line.

It is preferred that, projected length in the horizontal plane, the traverse of the exiting surface is longer than slitter line.

It is preferred that, projection in the horizontal plane, the traverse of the traverse of the incidence surface and the exiting surface is mutually put down OK.

It is preferred that, projection in the horizontal plane, the spacing of the slitter line of the slitter line of the incidence surface and the exiting surface Less than default line-spacing threshold value.

It is preferred that, projection in the horizontal plane, the slitter line coincidence of the slitter line of the incidence surface and the exiting surface.

It is preferred that, projection in the horizontal plane, the ratio of slitter line and traverse is more than the light extraction in the incidence surface The ratio of traverse and slitter line in face.

It is preferred that, there is part position in projection in the horizontal plane, the edge at the edge of the incidence surface and the exiting surface Put and be a little smaller than preset away from threshold value.

It is preferred that, there is part position in projection in the horizontal plane, the edge at the edge of the incidence surface and the exiting surface Put a coincidence.

It is preferred that, the light distribution element is included around the bottom surface for being arranged at the incidence surface the week side of boss, and the bottom surface is in smooth Shape.

It is preferred that, the light distribution element is included around the top surface for being arranged at the exiting surface the week side of boss, the top surface and bottom surface It is arranged in parallel, to form installation portion.

In order to solve the above technical problems, the embodiment of the present invention provides a kind of light source module, including：

Substrate；

Luminescence unit, is arranged on the substrate；

Light distribution element as described in foregoing summary, the light distribution element is attached to the substrate and covers described luminous Unit, the luminescence unit is located in the receiving space and alignd with the central point in the vertical direction of the exiting surface.

It is preferred that, the quantity of the light distribution element and luminescence unit is multiple, and the luminescence unit is arranged in array In on the substrate, luminescence unit is provided with each light distribution element.

It is preferred that, the central point of incidence surface is identical with the offset direction of the central point of exiting surface in each light distribution element.

It is preferred that, spacing is identical between the light distribution element on colleague or same column.

It is preferred that, the substrate includes longitudinally, and the substrate includes the light source arranged successively along the longitudinally Accommodating area and installing zone, the luminescence unit are arranged at the light source accommodating area.

In order to solve the above technical problems, the embodiment of the present invention provides a kind of lighting device, including：

It is attached to the power supply module on the housing；

At least one light source module as described in foregoing summary, the light source module is electrically connected with power supply module.

It is preferred that, the lighting device is street lamp.

It is preferred that, the lighting device also includes housing, and the power supply module and light source module are attached to the housing；Institute State the vertical support arm that lighting device also includes connecting the housing.

The technical scheme provided in an embodiment of the present invention more than, light distribution element that the embodiment of the present invention is provided, light Incidence surface and exiting surface are there is thickness between smooth surface shape and two faces in source module and lighting device, light distribution element Difference, the light projected positioned at the upper exiting surface of thickness larger portion point forms macula lutea area in hot spot and is more than preset area.By pre- If the size of area so that the concentration reduction of yellow light, macula lutea is then weakened, it is ensured that the illuminating effect of lighting device.

Brief description of the drawings

In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this Some embodiments described in invention, for those of ordinary skill in the art, are not paying the premise of creative labor Under, other accompanying drawings can also be obtained according to these accompanying drawings.

Fig. 1 is the stereogram of lighting device in an one exemplary embodiment of the invention.

Fig. 2 be an one exemplary embodiment of the invention in lighting device another angle stereogram.

Fig. 3 is the exploded view of lighting device in an one exemplary embodiment of the invention.

Fig. 4 is the partial schematic diagram of light source module in an one exemplary embodiment of the invention, and light source module now includes light Learn element, luminescence unit and partial substrate.

Fig. 5 be Fig. 4 shown in light source module in optical element stereogram.

Fig. 6 is sectional view of the light source module on A-A directions shown in Fig. 4.

Fig. 7 is sectional view of the light source module on B-B directions shown in Fig. 4.

Fig. 8 forms hot spot by the light source module shown in Fig. 4 and existing light distribution element forms the comparison schematic diagram of hot spot.

Embodiment

In order that those skilled in the art more fully understand the technical scheme in the present invention, below in conjunction with of the invention real The accompanying drawing in example is applied, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described implementation Example only a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, this area is common The every other embodiment that technical staff is obtained under the premise of creative work is not made, should all belong to protection of the present invention Scope.

With reference to shown in Fig. 1 and Fig. 2, lighting device 1000 includes the light source module 100 and power supply module 200 being electrically connected with (ginseng Fig. 3 shown in), power supply module 200 can obtain electric power from civil power or external connection battery bag, then by power transmission to light source module 100, light source module 100 emits beam after obtaining electric power, to illuminate predeterminable area.

In actual applications, light source module 100 and power supply module 200 can be respectively positioned on housing 300, lighting device 1000 Can be street lamp or other kinds of indoor lamp or outdoor lamp, the shape and material of housing 300 can be according to lighting devices 1000 type and application environment is selected.For example lighting device 1000 can elect street lamp as, then housing 300 can also basis The conventional shape of street lamp is set.

In embodiments of the present invention, lighting device also includes vertical support arm (not shown), and vertical support arm is attached to bottom The regions such as plate, road surface, when lighting device 1000 is street lamp, the vertical support arm is light pole.Housing 300 includes being used to match somebody with somebody The installation tail end 310 of vertical support arm (not shown) is connect, it can be hollow tubular to install tail end 310, and civil power cable can pass through Vertical support arm and the inside of installation tail end 310 are electrically connected with light source module 100 and power supply module 200.In actual use, pacify Dress tail end 310 can be connected by modes such as screws with vertical support arm.

In actual applications, the quantity of light source module 100 can be arranged at least one；Power supply module 200 can include The components such as current adjustment unit, over-current protecting unit, power supply module 200 can be SMD or plug-in type, herein Do not repeat.

With reference to shown in Fig. 3, light source module 100 includes light distribution element 10, luminescence unit 20 and substrate 30.Substrate 30 is installed To housing 300, the quantity of luminescence unit 20 is multiple and array arrangement on substrate 30, and the quantity of light distribution element 10 is equally set Multiple and array arrangement is set on substrate 30, each light distribution element 10 covers at least one luminescence unit 20.Light distribution element 10 Between connected by same light transmissive material, in actual applications, quantity can be prepared in the way of integrated injection molding Meet the light distribution element 10 of demand with layout.

In embodiments of the present invention, power supply module 200 also is located on substrate 30, by electrical components in substrate 30 with lighting Unit 20 is electrically connected with.In actual applications, substrate 30 includes longitudinally and received along the light source that longitudinally is arranged successively Hold area 31 and installing zone 32, luminescence unit 20 and light distribution element 10 are respectively positioned on light source accommodating area 31, and power supply module 200, which is located at, to be installed Area 32.

With reference to shown in Fig. 4 and Fig. 5, in light source module 100, light distribution element 10 is mainly used in sending luminescence unit 20 Light carries out the regulation of angle and direction.Light distribution element 10 can use such as polycarbonate, polymethyl methacrylate Prepared by the transparent materials such as PMMA, the size of light distribution element 10 can also be according to the application scenarios and lighting demand of light source module 100 Accommodation is carried out, be will not be described here.

Light distribution element 10 includes the incidence surface 11 and exiting surface 12 being oppositely arranged.Incidence surface 11 and exiting surface 12 are in smooth Curved, i.e., do not have obvious deformation on incidence surface 11 and exiting surface 12, deformation here can be protuberance, depression or Combination.Here " obvious deformation " can refer to the shape that deformation can be recognized by the human eye or finger touches out Become or finger-type become the adjustment of the light of light distribution element 11 can be produced largely influence and cause illuminating effect by Limit, does not refer to all types of deformation.Therefore, if the deformation on incidence surface 11 or exiting surface 12 does not interfere with light distribution element 11 when matching somebody with somebody light, it is believed that incidence surface 11 or exiting surface 12 are smooth；If the deformation on incidence surface 11 or exiting surface 12 It can not be can recognize that and come or finger touches out by human eye, it is also assumed that incidence surface 11 or exiting surface 12 are smooth.

In actual applications, how to judge whether above-mentioned deformation has influence on the luminous intensity distribution of light distribution element 11, can be by that will have The light distribution element for having this deformation (can be the optimal luminous intensity distribution member that inventor is provided with the light distribution element for not possessing this deformation Part product) make comparison in kind or emulation comparison, to determine the two light distribution effect difference whether in receptible scope.Here retouched " scope of receiving " stated can be that inventor sets according to light scene or user's request, do not refer to any user or appoint The universal standard what scene is applicable.It is, of course, also possible to be that can touch out by dependence test personnel's finger or human eye can The deformation found out, can also assert that the incidence surface 11 or exiting surface 12 are rough.

In the present embodiment, incidence surface 11 is in inner sunken face shape and forms host cavity 13, and host cavity 13 is used to house luminous Unit 20, the emitted light of luminescence unit 20 arrives at incidence surface 11 and projected again by exiting surface 12.Exiting surface 12 is in convex outward Shape, the outer convex direction of exiting surface 12 is consistent with the indent direction of incidence surface 11.

In actual applications, incidence surface 11 and exiting surface 12 are substantially in spherical calotte shape." spherical calotte shape " herein Can be obtained from a complete sphere internal cutting or several spherical calottes are spliced, it is only necessary to ensure into light Face 11 and exiting surface 12 are smooth.

Light distribution element 10 also include positioned at the week side of boss of incidence surface 11 bottom surface 14, bottom surface 14 be burnishing surface, bottom surface 14 be used for Substrate 30 is directly fitted, and light distribution element 10 is covered on luminescence unit 20, even if light distribution element 10 and substrate 30 are because of assembling Problem and spacing is excessive, light is also only capable of projecting from light distribution element 10, prevents the adverse optical effect of such as crescent moon speck. Light distribution element 10 also includes the top surface 15 positioned at the week side of boss of exiting surface 12, and top surface 15 and bottom surface 14 be arranged in parallel, and passes through side 16 Connect to form square installation portion.

Certainly, light source module 100 include multiple light distribution elements 10 when, these light distribution elements can together by screw, The modes such as buckle are connected with substrate 30, or are connected with housing 300, and this is technology well known to those of ordinary skill in the art, It will not be described here.

Fig. 6 is sectional view of the light source module of the part shown in Fig. 4 on A-A directions.Plane where A-A directions can be managed Solve as horizontal plane, now light source module 100 is also disposed on horizontal plane.Below in conjunction with the sectional view shown in Fig. 3, it is described in detail into light The shape of face 11 and exiting surface 12 in the horizontal plane.

Incidence surface 11 has into plain edge along 111, and exiting surface 12 has light extraction edge 121, enters plain edge along 111 and light extraction edge 121 describe the general shape of incidence surface 11 and exiting surface 12 respectively.By taking incidence surface 11 as an example, enter plain edge and reflect along 111 profile The projection of incidence surface 11 in the horizontal plane, enter plain edge along 111 for it is circular when, then incidence surface 11 is spherical calotte, incidence surface 111 During for ellipse, then incidence surface 11 is part-ellipsoids.

In the present embodiment, enter plain edge part location point along 111 and light extraction edge 121 and be smaller than preset away from threshold Value.This preset can be preset away from threshold value, for example, can be 1 millimeter or other values.In actual use, can be by The very little that preset is set away from threshold value so that enter plain edge part location point along along 111 and light extraction edge 121 and essentially coincide or completely Overlap.

Subsequently, the traverse and slitter line for dividing four-quadrant, traverse are included on incidence surface 11 and exiting surface 12 It is the line of cut of the lateral mid-point along incidence surface 11 or exiting surface 12, slitter line is along incidence surface 11 or exiting surface 12 Longitudinally middle position line of cut.It is worth noting that, traverse and slitter line are dummy line, for ease of subsequent detailed skill Art scheme and introduce, the shape for limiting incidence surface 11 and exiting surface 12 can not be used for.

In the present embodiment, the incidence surface 11 and exiting surface 12 after cutting are in four-quadrant symmetrical.With incidence surface 11 Exemplified by four-quadrant symmetrical, then after showing that incidence surface 11 sequentially passes through horizontal partition and be longitudinally cutting, 4 parts are divided into, Any two is axial symmetry or centrosymmetric in this 4 parts.For example：Part in the first and second quadrants is axle Symmetrically, the part in first and third quadrant is centrosymmetric.

It is worth noting that：" four-quadrant symmetrical " herein and the absolute symmetry in mathematical meaning is not specific to, can also wrapped Include the scope of near symmetrical.Still by taking incidence surface 11 as an example, it in 4 parts at least two is near symmetrical that can be, such as position It is approximate axial symmetry in the part in the first and second quadrants, or the part in first and third quadrant is approximate center pair Claim, it might even be possible to be that part in the first and second quadrants is approximate axial symmetry and the part in first and third quadrant It is that approximate center is symmetrical.

For ease of description incidence surface 11 and the flat shape of exiting surface 12, incidence surface 11 is cut into the crosscutting of 4 quadrants The projection of line and slitter line in the horizontal plane is set into light traverse 112 and enters light slitter line 113, and exiting surface 12 is cut Traverse and slitter line projection in the horizontal plane into 4 quadrants is set to light extraction traverse 122 and light extraction slitter line 123。

In the present embodiment, being shorter in length than into light slitter line 113 for light traverse 112 is entered, i.e., incidence surface 11 is in horizontal plane On projection be preferably ellipse or close to ellipse shape.Meanwhile, the length of light extraction traverse 122 is more than light extraction slitter line The projection of 123, i.e. exiting surface 12 in the horizontal plane is preferably also ellipse or the shape close to ellipse.

It is preferred that, enter light slitter line 113 with enter light traverse 112 ratio be more than light extraction slitter line 123 and light extraction it is crosscutting The ratio of line 122.So that incidence surface 11 is longer and narrower relative to exiting surface 12.

Enter light traverse 112 and light extraction traverse 123 is parallel to each other.It is worth noting that, being parallel to each other here, not The decision being limited on data sense is parallel, can also include approximately parallel scope, will not be described here.Also, enter light to indulge Default line-spacing threshold value is smaller than between tangent line 113 and light extraction slitter line 123, this default line-spacing threshold value can be set in advance It is fixed, for example can be 1 millimeter or other values.In actual use, the very little that preset can be set away from threshold value so that enter light Slitter line 113 and light extraction slitter line 123 are essentially coincided or are completely superposed.

Incidence surface 11 and exiting surface 12 are respectively provided with central point, and the central point is the centre position or extreme higher position of face type. So that incidence surface 11 and exiting surface 12 are four-quadrant symmetricals as an example, then the projection of the central point in the two faces in the horizontal plane is Enter light slitter line 113 and enter the intersection point and light extraction slitter line 123 of light traverse 112 and the intersection point of light extraction traverse 122.In this reality Apply in example, incidence surface 11 and exiting surface 12 are respectively provided with central point and staggered in vertical direction, i.e., the line of the two is not vertical Direction.

In embodiments of the present invention, along the traverse of the exiting surface, thickness has as follows between incidence surface and exiting surface Relation：The thickness of the central point of exiting surface 12 and incidence surface 11 is minimum, in the central point both sides of exiting surface 12 and the thickness of incidence surface 11 In increase trend and symmetrically, i.e., the central point of exiting surface 12 is separation, and the thickness of both sides is incremented by and increasing degree is identical.

Fig. 7 is sectional view of the light source module 100 of the part shown in Fig. 4 on B-B directions.Plane where B-B directions can To be interpreted as the vertical plane vertical with A-A directions, now light distribution element 10 is still disposed on horizontal plane.Below in conjunction with Fig. 4 institutes The sectional view shown, is described in detail the shape of incidence surface 11 and exiting surface 12 on vertical plane.

In the present embodiment, along the slitter line of the incidence surface, thickness has between the incidence surface and exiting surface：Along institute The slitter line for stating incidence surface is in increase trend.

The section of incidence surface 11 and the in the vertical direction of exiting surface 12 is substantially part circular or part-elliptical, section On along substantially continuous camber line.In the present embodiment, incidence surface 11 and exiting surface 12 are four-quadrant symmetrical, incidence surface 11 Peak be its central point, the peak of exiting surface 12 is its central point.

In the present embodiment, luminescence unit 20 aligns with the central point in the vertical direction of exiting surface 12.Now, light single Member 20 is located on the intersection point of the light extraction slitter line 123 of exiting surface 12 and light extraction traverse 122.

It is worth noting that：In embodiments of the present invention, " central point of luminescence unit 20 and exiting surface 12 is in vertical direction The absolute alignment of upper alignment " not in mathematical meaning, luminescence unit 20 can also produce certain inclined with the central point of exiting surface 12 Move, the scope of this skew can be：Offset distance exists between the central point of the center of the luminescence unit and the exiting surface The 20% of luminescence unit width, skew here can be any direction.

If light distribution element 10 only covers a luminescence unit 20, it is only necessary to determine the size of the luminescence unit 20, if with It is that luminescence unit 20 is moved along traverse direction, then its width is used as using the size of luminescence unit 20 on traverse direction. If light distribution element 10 covers multiple luminescence units 20, then the overall dimensions of these luminescence units 20 are obtained, are not done herein Repeat.

Fig. 8 forms hot spot by the light source module shown in Fig. 4 and existing light distribution element forms the comparison schematic diagram of hot spot. With reference to shown in Fig. 5, the emitted light of luminescence unit 20, can be away from incidence surface 11 after the processing of incidence surface 11 and exiting surface 12 Central point skew, i.e., towards the bigger light distribution element partial offset of thickness so that light is spread, so as to obtain hot spot 200, the width of the area of macula lutea 410 is enlarged in the hot spot 400.Relative to the hot spot of general light distribution element emitted light The width of macula lutea 510 in 500, the area that light distribution element 10 forms macula lutea 510 is significantly larger so that the concentration of yellow light subtracts It is low, so as to weaken macula lutea.

In embodiments of the present invention, the larger region of the thickness of light distribution element 10 forms the color tolerance of macula lutea and white light in hot spot Difference is less than default value of chromatism.Default value of chromatism can be according to reception energy of the 1000 application area intra domain users of lighting device to aberration Power or ethnic group characteristic are set, to ensure that it is light enough that the larger region of the thickness of light distribution element 10 forms macula lutea in hot spot, with In the tolerance interval of family.In actual applications, the default value of chromatism is 4.

Each embodiment in this specification is described by the way of progressive, identical similar portion between each embodiment Divide mutually referring to what each embodiment was stressed is the difference with other embodiment.It is real especially for system Apply for example, because it is substantially similar to embodiment of the method, so description is fairly simple, related part is referring to embodiment of the method Part explanation.

Embodiments of the invention are the foregoing is only, are not intended to limit the invention.For those skilled in the art For, the present invention can have various modifications and variations.It is all any modifications made within spirit and principles of the present invention, equivalent Replace, improve etc., it should be included within scope of the presently claimed invention.