Low voltage lighting fixture with integral thermally controlled

Details Low voltage lighting fixture with integral thermally controlled Low voltage lighting fixture with integral thermally controlled

1986-04-22

1987-07-21

Nelli, Raymond A.

Illumination

Light source and modifier

With ventilating, cooling or heat insulating means

362296, 362265, 362263, F21V 2900, F21V 700

Patent

active

046822763

ABSTRACT:
A low voltage lighting fixture has a lamp housing having distal and proximal ends and is made of heat conducting material. A low voltage lamp is supported in an integral socket on a central axis in the distal end of the externally finned housing. A generally planar thermal barrier made of poor heat conducting material is provided at the proximal end of the lamp housing, and a tubular transformer housing, including a low voltage transformer means, is coaxially attached to the proximal end of the lamp housing in abutment with the thermal barrier. In a preferred embodiment convective cooling air passages are provided between the lamp housing and the thermal barrier, and additional convective cooling passages are provided between the thermal barrier and the transformer housing, whereby lamp heat is dissipated by the cooling fins with limited thermal conduction to the transformer. In an alternate preferred embodiment a male screw base is provided on the distal end of the transformer housing, whereby the fixture may be directly screwed into a conventional lamp socket.

REFERENCES:
patent: 924975 (1909-06-01), Ferguson
patent: 1091715 (1914-03-01), Steinmetz
patent: 1092083 (1914-03-01), Steinmetz
patent: 1866750 (1932-07-01), Brownell
patent: 1938555 (1933-12-01), Cadiceux
patent: 3949211 (1976-04-01), Elms
patent: 4091369 (1978-05-01), Edelbick
patent: 4403277 (1983-09-01), Eargle, Jr. et al.
patent: 4414615 (1983-11-01), Szeker et al.
patent: 4455595 (1984-06-01), Engel et al.
patent: 4595971 (1986-06-01), Dean

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