US3272978A - Lighting fixture - Google Patents

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Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
  • F21S8/00—Lighting devices intended for fixed installation
  • F21S8/04—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
  • F21S8/06—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures by suspension
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
  • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
  • F21V21/02—Wall, ceiling, or floor bases; Fixing pendants or arms to the bases
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
  • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
  • F21V21/10—Pendants, arms, or standards; Fixing lighting devices to pendants, arms, or standards
  • F21V21/112—Fixing lighting devices to pendants
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
  • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
  • F21V23/02—Arrangement of electric circuit elements in or on lighting devices the elements being transformers, impedances or power supply units, e.g. a transformer with a rectifier
  • F21V23/026—Fastening of transformers or ballasts
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
  • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10S174/00—Electricity: conductors and insulators
  • Y10S174/02—Ballasts

Definitions

• DONALD L. JACKSON INVEA TOR DONALD L. JACKSON INVEA TOR.
• This invention relates to lighting fixtures and more particularly to structural features thereof which facilitate mounting.
• Mounting of a lighting fixture usually involves two essential and basic operations; one is securing the fixture to a supporting structure and the other is connecting the fixture to an electrical power source. In addition, other operations are usually involved, both in assembly and dissassembly.
• one of the principal objects of this invention is to simplify and facilitate the task of mounting a lighting fixture.
• Another object of this invention is to improve the structural interrelationship of fixture components so that the mounting task may be simplified and the operation performed more easily.
• a further object of this invention is to provide a lighting fixture in which the structural components are arranged and related to one another in such a manner that the electrician will not be required to support the weight of the fixture manually while performing tasks which require the use of tools and, conversely, he will not be required to perform tasks which require the use of tools or both hands when lifting the heavy fixture into mounting position.
• a canopy the lower longitudinal edges of which are inwardly and then outwardly turned to define a pair of inwardly turned channels
• a cooperating trough mounted on the top of a fixture reflector, the upper longitudinal edges of which are outwardly and then downwardly turned to define a pair of outwardly turned channels.
• the inwardly turned channels of the canopy and the outwardly turned channels of the trough interlock to support the fixture.
• FIGURE 1 is a fragmentary, end elevational detail of a canopy-conduit stem assembly.
• FIGURE 2 is an exploded view in perspective of a lighting fixture and its associated canopy.
• FIGURE 3 is a fragmentary end perspective View of the lighting fixture and canopy of FIGURE 2 assembled.
• the lighting fixture 1 includes a reflector 3 having a trough 5 mounted on the top thereof.
• a ballast 7 is mounted in the trough 5.
• the trough 5 is provided with a pair of outwardly turned channels 9.
• Cooperating with this assembly is a canopy 11 mounted on an end of a conduit stem 13.
• the canopy 11 is provided with a pair of inwardly turned channels 12.
• Wiring 15 extends through the conduit stem 13 and is connected to wiring 17 of the ballast 7 by wire nuts 19, one of which is shown in FIG. 3.
• Canopy I1 is secured to the conduit stem 13 and wiring I5 is drawn through the conduit stem 13 as shown in FIG. 1.
• Trough 5 is secured to the top of the reflector 3 and service wiring is drawn therethrough through suitable knockouts provided therefor in the conventional manner not shown.
• the ballast 7 is mounted in the trough 5.
• This assembly i.e., the unit identified by the reference number 1 in FIG. 2, is moved into position with respect to the canopy 11 as shown in FIG. 2 and is then moved longitudinally to position it within and suspended from canopy II with channels 9 interlocking with channels 12 as shown in FIG. 3.
• the electrician is now free to work with both hands to effect completion of the wiring connections such as is shown in FIG. 3 for example.
• the open ends of the canopy 11 and the trough 5 are closed by end plates 29, one of which is shown in FIG. 2. This completes the fixture assembly operation.
• the canopy may be mounted by other means than a conduit stem.
• a lighting fixture assembly comprising: a reflector; an open-ended trough mounted on the top of said reflector, the upper longitudinal edges of said trough defining channels; a ballast mounted in said trough, said ballast having wiring connected thereto and extending therefrom; and an open-ended canopy, the lower longitudinal edges of which define channels, said first mentioned channels and said second mentioned channels being disposed in interlocking relationship to support said trough from said canopy, and said open-ended trough and said open-ended canopy defining an accessible chamber within which wiring connections may be effected.
• a lighting fixture assembly comprising: a reflector; an open-ended trough mounted on the top of said reflector, the upper longitudinal edges of said trough defining channels; a ballast mounted in said trough, said ballast having wiring connected thereto, extending therefrom and lying in said trough; an open-ended canopy, the lower longitudinal edges of which define channels, said first mentioned channels and said second mentioned channels being disposed in interlock-ing relationship to support said trough from said canopy; a conduit stem mounted on said canopy; and wiring extending through said conduit stem and into said canopy, said open-ended trough and said open-ended canopy defining an accessible chamber within which wiring connections may be effected.

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• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Description

Claims (1)

Priority Applications (1)

Applications Claiming Priority (1)

Publications (1)

Family

ID=23300931

Family Applications (1)

Country Status (1)

Cited By (64)

Citations (8)

• 1963
  • 1963-12-24 US US333024A patent/US3272978A/en not_active Expired - Lifetime

Patent Citations (8)

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