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US 5,823,663 AGranted
Fluorescent troffer lighting fixture
AssigneeNational Service Industries, Inc.
InventorsL. Michael Bell, Peter Michael Schmidt
Life of this patent
Estimating the term…
Abstract
An improved fluorescent troffer lighting fixture particularly intended for recessed mounting to a suspended ceiling grid, the fixture of the invention having a housing frame configured with spaced end plates which secure to a top plate and side flanges without the need for separate fasteners. The end plates, top plate and side flanges of the fixture housing snap-fit together through the use of cooperating fastening elements formed integrally with said end plates inter alia. The fixture housing mounts a louver and a channel with fastening structure integrally formed with the fixture housing, the channel mounting at least one fluorescent lamp and having reflective surfaces opposing said lamp for increasing efficiency of the fixture.
Claims29
A lighting fixture having at least one lamp carried within the lighting fixture, comprising:
- a housing having a top wall formed on at least one end thereof, the top wall having at least one aperture formed therein near said end of said housing, the housing further being provided with side walls depending from the top wall and having at least one aperture formed in each of the side walls;
- at least one end plate mounted to each end of the housing;
- and,
- means formed integrally with each of the end plates for mounting each end plate to the housing, said means comprising at least one tab element receivable within the aperture formed in the top wall of the housing, and further comprising at least one tab element receivable into the aperture formed in each side wall to snap-fit thereinto, thereby to retain each end plate to one each of the ends of the housing without the use of separate fastening elements.
1 more element
A lighting fixture having at least one lamp carried within the lighting fixture, comprising:
- a housing having a top wall and at least one aperture formed in the top wall of the housing;
- and,
- at least one end plate mounted to each end of the housing, each end plate comprising a planar body portion and a planar apron portion formed integrally together along an integral connecting flange element, the planar apron portion being angled relative to the planar body portion, the planar body portion having a top wall flange and side wall flanges formed integrally along a top edge and side edges respectively thereof, the top wall flange carrying at least one tab element which is receivable into the at least one aperture formed in the top wall of the housing, the aperture formed in the top wall of the housing having a T-shape with a leg portion thereof extending toward the end of the housing and a slot portion terminating the T-shape, the tab element having a reduced-in-length neck portion extending downwardly from the top wall flange and a rectangular plate element terminating the tab element and being co-planar with that plane within which the top wall flange lies, the tab element being essentially resilient in a vertical direction, the plate element being received into the slot portion of the aperture from outwardly of the housing and the neck portion of the tab element fitting into the leg portion of said aperture, each end plate being thereby mounted to the housing through the use of means formed integrally with each of the end plates.
A lighting fixture having at least one lamp carried within the lighting fixture, comprising:
- a housing having side walls depending therefrom and at least one aperture formed in each end of each of the side walls of the housing;
- and,
- at least one end plate mounted to each end of the housing, each end plate comprising a planar body portion and a planar apron portion formed integrally together along an integral connecting flange element, the planar apron portion being angled relative to the planar body portion, the planar body portion having a top wall flange and side wall flanges formed integrally along a top edge and side edges respectively thereof, each side wall flange of each end plate carrying one of the tab elements which is receivable into one of the apertures formed in each end of each of the side walls of the housing, the tab elements having an arcuate edge and a shoulder terminating the arcuate edge, the arcuate edge facilitating snap-fastening of the tab element into said aperture and the shoulder providing an edge which engages a portion of the side wall of the housing defining said aperture, thereby to fasten the end plate to the housing.
A lighting fixture having at least one lamp carried within the lighting fixture, comprising:
- a housing having a top wall and at least one aperture formed in the top wall of the housing;
- and,
- at least one end plate mounted to each end of the housing, each end plate comprising a planar body portion and a planar apron portion formed integrally together along an integral connecting flange element, the planar apron portion being angled relative to the planar body portion, the planar body portion having a top wall flange and side wall flanges formed integrally along a top edge and side edges respectively thereof, the top wall flange carrying at least one tab element which is receivable into the at least one aperture formed in the top wall of the housing thus comprising means formed integrally with each of the end plates for mounting each end plate to the housing.
A lighting fixture having at least one lamp carried within the lighting fixture, comprising:
- a housing having side walls and at least one aperture formed in each end of each of the side walls of the housing;
- and,
- at least one end plate mounted to each end of the housing, each end plate comprising a planar body portion and a planar apron portion formed integrally together along an integral connecting flange element, the planar apron portion being angled relative to the planar body portion, the planar body portion having a top wall flange and side wall flanges formed integrally along a top edge and side edges respectively thereof, each side wall flange of each end plate carrying at least one tab element which is receivable into one of the apertures formed in each end of each of the side walls of the housing for mounting to said housing and thus comprising means formed integrally with each of the end plates for mounting each end plate to the housing.
A lighting fixture having at least one lamp carried within the lighting fixture, comprising:
- a housing having a top wall and at least one aperture formed in the top wall of the housing, the housing further having side walls depending from the top wall with at least one aperture being formed in each end of each of the side walls of the housing;
- and,
- at least one end plate mounted to each end of the housing, each end plate comprising a planar body portion and a planar apron portion formed integrally together along an integral connecting flange element, the planar apron portion being angled relative to the planar body portion, the planar body portion having a top wall flange and side wall flanges formed integrally along a top edge and side edges respectively thereof, the top wall flange carrying at least one first tab element which is receivable into the at least one aperture formed in the top wall of the housing, each side wall flange of each end plate carrying at least one second tab element which is receivable into one of the apertures formed in each end of each of the side walls of the housing, the end plates thus each being mounted to the housing through means formed integrally with each of the end plates for mounting each end plate to the housing.
Dependencies are inferred from the claim text.