US3798442A - Lighting unit and reflector therefor - Google Patents

Lighting unit and reflector therefor Download PDF

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Publication number
US3798442A
US3798442A US00318748A US3798442DA US3798442A US 3798442 A US3798442 A US 3798442A US 00318748 A US00318748 A US 00318748A US 3798442D A US3798442D A US 3798442DA US 3798442 A US3798442 A US 3798442A
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United States
Prior art keywords
reflector
lighting unit
housing
light
face
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Expired - Lifetime
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US00318748A
Inventor
Cracken A Mc
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NICOL AND ANDREW Ltd
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NICOL AND ANDREW Ltd
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    • 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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • F21V17/16—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting
    • F21V17/164—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting the parts being subjected to bending, e.g. snap joints
    • 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
    • F21V15/00—Protecting lighting devices from damage
    • F21V15/01—Housings, e.g. material or assembling of housing parts
    • 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
    • F21V7/00—Reflectors for light sources
    • F21V7/005—Reflectors for light sources with an elongated shape to cooperate with linear light sources
    • 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
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/0075—Fastening of light sources or lamp holders of tubular light sources, e.g. ring-shaped fluorescent light sources
    • F21V19/008—Fastening of light sources or lamp holders of tubular light sources, e.g. ring-shaped fluorescent light sources of straight tubular light sources, e.g. straight fluorescent tubes, soffit lamps
    • F21V19/009—Fastening of light sources or lamp holders of tubular light sources, e.g. ring-shaped fluorescent light sources of straight tubular light sources, e.g. straight fluorescent tubes, soffit lamps the support means engaging the vessel of the source
    • 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

Definitions

  • ABSTRACT A lighting unit comprising a box-like housingopen at one face thereof, a light reflector having inner reflective surfaces, outer reflective surfaces and reflective side surfaces interconnecting adjacent inner and outer surfaces to define a plurality of spaced recesses, and mounting means within each recess for supporting a light source therein.
  • lighting unit housings have been provided with reflectors. Such reflectors however are normally fixedly secured to the housing and the necessary electrical power supply wiring connections for the tube or tubes are visible at all times.
  • An object of the present invention is to provide a lighting unit capable of incorporating a bank of fluorescent tubes and which is easy to assemble or dismantle and which is inexpensive to manufacture.
  • a lighting unit comprising a box-like housing open at one face thereof, a light reflector having inner reflective surfaces, outer reflective surfaces and reflective side surfaces interconnecting adjacent inner and outer surfaces to define a plurality of spaced recesses, and mounting means within each recess for supporting a light source therein.
  • FIG. 1 is a perspective view of one form of lighting unit; and '1 FIG. 2 is a sectional view line llll of FIG. 1.
  • a lighting unit comprises a flat box-like housing relatively narrow in depth and made up of a back wall 3, side walls 4 and end walls 5.
  • the box-like structure is open on the front face thereof, the opening being bounded by an inwardly directed peripheral flange 6 extending from each of the side and end walls 4 and 5 respectively.
  • an aluminium reflector 7 Polished over its whole surface area and corrugated so as to form a series of flat inner surfaces 8 and parallel flat outer surfaces 9 interconnected by angled diverging side wall portions 10.
  • a series of spaced recesses'l 1 is thus formed by each inner surface 8 and its adjacent side wall portion 10.
  • a pair of flexible spring clips 12 for securing a fluorescent tube 13 is fixedly mounted on each of the inner surfaces 8 of the reflector.
  • the reflector 7 is flexible and is sprung into position within the housing to close the open face thereof and is retained in position by the inwardly directed flanges on the side walls'4 of the housing.
  • the necessary wellon an enlarged scale on the known electrical wiringconnections for controlling electric power supply to the tubes are led to the ends of thefluorescent tubes in normal manner through either the end walls 5 of the back wall 3 of the housing.
  • the electrical connections to the tubes are then concealed by the insertion of corrugated end closure plates 14 which are also of polished aluminium and which, as shown in FIG.
  • the corrugated closure plates 14 are sprung into position in the housing to be retained by the flanges 6 on the side and end walls 4 and 5 respectively.
  • the depth of the recesses 11 formed in the reflector 7 is such that the fluorescent tube located in each is housed wholly within its recess and no part of the tube projects outwardly beyond the outer flat surfaces 9 of reflector 7. In this way the amount of light from a given light source reflected by the reflector 7 to a desired location has been found to be satisfactorily high.
  • a bank of fluorescent tubes in a lighting unit as illustrated in the drawings is visually pleasing when lit.
  • fluorescent tubes are referred to as the light source, it will be readily apparent that other forms of light source such as electric bulbs can equally well be used.
  • other forms of light source such as electric bulbs can equally well be used.
  • the various dimensions of the reflective surfaces of the reflector can be varied to suit requirements.
  • a lighting unit comprising a box-like housing open at one face thereof, a corrugated light reflector located within said housing so as to define a plurality of light source-receiving recesses, said reflector being lightreflective over substantially the full extent of the outer face thereof, and a corrugated closure plate, having an outer light-reflective surface, located adjacent each end of the reflector, each said closure plate nesting within the reflector to define a compartment within which electrical light-source connections can be concealed.
  • a lighting unit as claimed in claim 1 in which a peripheral flange is provided around the open face of the housing, and the reflector and closure plates are flexible to enable insertion into the open face of the housing for retention therein by said peripheral flange.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

A lighting unit comprising a box-like housing open at one face thereof, a light reflector having inner reflective surfaces, outer reflective surfaces and reflective side surfaces interconnecting adjacent inner and outer surfaces to define a plurality of spaced recesses, and mounting means within each recess for supporting a light source therein.

Description

United States Patent [191 McCracken 1 I [451 Mar. 19, 1974 LIGHTING UNIT AND REFLECTOR THEREFOR [75] lnventor: Alexander Ernest McCracken, Chalfont Saint Peter, England [73] Assignee: Nicol & Andrew Limited, Hillington,
Glasgow, Scotland 221 Filed: Dec.27, 1972 211 App1.No.:318,748
[30] Foreign Application Priority Data Dec. 28, 1971 Great Britain .I 60232/71 [52] US. Cl 240/5 1.l1 R, 240/103 B [51] Int. Cl.. F21v 7/10 [58] Field of Search 240/51." 1l :R, 103 R, 103B [56-] References Cited UNITED STATES PATENTS 2.916.609 12/1959 Barchmannmnl 240/5l.ll R X 2,342,570 Biller 240/5l.ll R X 2,331,774 10/1943 Guth 240/51.1l R 2,334,005 11/1943 Hoeveler.. 240/51.11 R 3,154,001 10/1964 Zurawski.. 240/51.11 R X 2,566,076 8/1951 Walsh 240/103 B X 3,043,951 7/1962 Tillson 240/5l.1l R
PrimaryExaminer-Jdseph F. Peters, Jr. Attorney, Agent, or Firm-Larson, Taylor & Hinds [57] ABSTRACT A lighting unit comprising a box-like housingopen at one face thereof, a light reflector having inner reflective surfaces, outer reflective surfaces and reflective side surfaces interconnecting adjacent inner and outer surfaces to define a plurality of spaced recesses, and mounting means within each recess for supporting a light source therein.
2 Claims, 2 Drawing Figures 1 LIGHTING UNIT AND REFLECTOR THEREFOR This invention relates to a lighting unit and particularly but not exclusively to such a unit incorporating a plurality of fluorescent tubes.
Many forms of lighting units incorporating one or more fluorescent tubes have previously been proposed and in many cases lighting unit housings have been provided with reflectors. Such reflectors however are normally fixedly secured to the housing and the necessary electrical power supply wiring connections for the tube or tubes are visible at all times.
An object of the present invention is to provide a lighting unit capable of incorporating a bank of fluorescent tubes and which is easy to assemble or dismantle and which is inexpensive to manufacture.
According to the present invention there is provided a lighting unit comprising a box-like housing open at one face thereof, a light reflector having inner reflective surfaces, outer reflective surfaces and reflective side surfaces interconnecting adjacent inner and outer surfaces to define a plurality of spaced recesses, and mounting means within each recess for supporting a light source therein.
An embodiment of the present invention will now be described, by way of example, with reference to the accompanying drawings in which:
FIG. 1 is a perspective view of one form of lighting unit; and '1 FIG. 2 is a sectional view line llll of FIG. 1.
Referring to the drawings, a lighting unit comprises a flat box-like housing relatively narrow in depth and made up of a back wall 3, side walls 4 and end walls 5. The box-like structure is open on the front face thereof, the opening being bounded by an inwardly directed peripheral flange 6 extending from each of the side and end walls 4 and 5 respectively.
Positioned within the housing is an aluminium reflector 7 polished over its whole surface area and corrugated so as to form a series of flat inner surfaces 8 and parallel flat outer surfaces 9 interconnected by angled diverging side wall portions 10. A series of spaced recesses'l 1 is thus formed by each inner surface 8 and its adjacent side wall portion 10. As shown in FIG. 2, a pair of flexible spring clips 12 for securing a fluorescent tube 13 is fixedly mounted on each of the inner surfaces 8 of the reflector.
The reflector 7 is flexible and is sprung into position within the housing to close the open face thereof and is retained in position by the inwardly directed flanges on the side walls'4 of the housing. The necessary wellon an enlarged scale on the known electrical wiringconnections for controlling electric power supply to the tubes are led to the ends of thefluorescent tubes in normal manner through either the end walls 5 of the back wall 3 of the housing. The electrical connections to the tubes are then concealed by the insertion of corrugated end closure plates 14 which are also of polished aluminium and which, as shown in FIG. 2, have flat outer surfaces 15 designed to abut against the outer surfaces 9 of the reflector 7 and flat inner surfaces 16 which lie within the recesses 11 and parallel to but spaced from the inner surfaces 8 of the reflector 7 to define compartments in which the electrical connections are contained but concealed from external view.
In thesame manner as the flexible reflector 7, the corrugated closure plates 14 are sprung into position in the housing to be retained by the flanges 6 on the side and end walls 4 and 5 respectively.
The depth of the recesses 11 formed in the reflector 7 is such that the fluorescent tube located in each is housed wholly within its recess and no part of the tube projects outwardly beyond the outer flat surfaces 9 of reflector 7. In this way the amount of light from a given light source reflected by the reflector 7 to a desired location has been found to be satisfactorily high. In addition, a bank of fluorescent tubes in a lighting unit as illustrated in the drawings is visually pleasing when lit.
Although in the above described embodiment, fluorescent tubes are referred to as the light source, it will be readily apparent that other forms of light source such as electric bulbs can equally well be used. In addition the various dimensions of the reflective surfaces of the reflector can be varied to suit requirements.
What is claimed is:
l. A lighting unit comprising a box-like housing open at one face thereof, a corrugated light reflector located within said housing so as to define a plurality of light source-receiving recesses, said reflector being lightreflective over substantially the full extent of the outer face thereof, and a corrugated closure plate, having an outer light-reflective surface, located adjacent each end of the reflector, each said closure plate nesting within the reflector to define a compartment within which electrical light-source connections can be concealed.
2. A lighting unit as claimed in claim 1, in which a peripheral flange is provided around the open face of the housing, and the reflector and closure plates are flexible to enable insertion into the open face of the housing for retention therein by said peripheral flange.

Claims (2)

1. A lighting unit comprising a box-like housing open at one face thereof, a corrugated light reflector located within said housing so as to define a plurality of light source-receiving recesses, said reflector being light-reflective over substantially the full extent of the outer face thereof, and a corrugated closure plate, having an outer light-reflective surface, located adjacent each end of the reflector, each said closure plate nesting within the reflector to define a compartment within which electrical light-source connections can be concealed.
2. A lighting unit as claimed in claim 1, in which a peripheral flange is provided around the open face of the housing, and the reflector and closure plates are flexible to enable insertion into the open face of the housing for retention therein by said peripheral flange.
US00318748A 1971-12-28 1972-12-27 Lighting unit and reflector therefor Expired - Lifetime US3798442A (en)

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Application Number Priority Date Filing Date Title
GB6023271A GB1390623A (en) 1971-12-28 1971-12-28 Lighting unit and reflector therefor

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2595739A3 (en) * 1986-03-17 1987-09-18 Lamarche Bernard Member intended for the installation of sources for lighting, heating and other electrical appliances equipping a premises

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29609670U1 (en) * 1996-02-14 1996-08-29 Philips Electronics N.V., Eindhoven lamp

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2331774A (en) * 1941-06-12 1943-10-12 Edwin F Guth Lighting fixture
US2334005A (en) * 1941-08-05 1943-11-09 Pittsburgh Reflector Company Illuminating fixture
US2342570A (en) * 1941-11-15 1944-02-22 Day Brite Lighting Inc Fluorescent lighting fixture
US2566076A (en) * 1950-01-18 1951-08-28 Mcdonald Company Lamp shade adjustable on lamp axis
US2916609A (en) * 1954-07-30 1959-12-08 Schneider & Co Dr Ing Lights intended for use in the open air
US3043951A (en) * 1959-10-09 1962-07-10 Curtis Electro Lighting Inc Universally mountable lighting fixture
US3154001A (en) * 1960-09-22 1964-10-27 Garey Corp Fluorescent light fixture

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2331774A (en) * 1941-06-12 1943-10-12 Edwin F Guth Lighting fixture
US2334005A (en) * 1941-08-05 1943-11-09 Pittsburgh Reflector Company Illuminating fixture
US2342570A (en) * 1941-11-15 1944-02-22 Day Brite Lighting Inc Fluorescent lighting fixture
US2566076A (en) * 1950-01-18 1951-08-28 Mcdonald Company Lamp shade adjustable on lamp axis
US2916609A (en) * 1954-07-30 1959-12-08 Schneider & Co Dr Ing Lights intended for use in the open air
US3043951A (en) * 1959-10-09 1962-07-10 Curtis Electro Lighting Inc Universally mountable lighting fixture
US3154001A (en) * 1960-09-22 1964-10-27 Garey Corp Fluorescent light fixture

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2595739A3 (en) * 1986-03-17 1987-09-18 Lamarche Bernard Member intended for the installation of sources for lighting, heating and other electrical appliances equipping a premises

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