Illumination – Light source and modifier – With ventilating – cooling or heat insulating means
Patent
1980-07-31
1982-10-26
Lechert, Jr., Stephen J.
Illumination
Light source and modifier
With ventilating, cooling or heat insulating means
362147, 362148, 362227, 362249, 362311, 362367, 362368, 362375, F21V 2900
Patent
active
043565409
ABSTRACT:
A lighting fixture adapted to be mounted on a ceiling by attachment to an outlet box in the ceiling. The fixture comprises a pan having a bottom and a rim engageable with the ceiling for spacing the bottom of the pan therefrom, a crossbar attached to the bottom of the outlet box in position extending horizontally across the bottom of the box, and fasteners for detachably securing the rim of the pan to the crossbar. The lighting fixture also includes a first layer of insulation in the pan secured to the pan above the bottom thereof, a second layer of insulation secured on the underside of the bottom of the pan, and a light socket for mounting a light source on the underside of the pan below the second layer of insulation. A diffuser having an open top is mounted on the underside of the pan around the socket and the light source. The second layer of insulation is disposed above the light source for thermally insulating the light source from the pan and the outlet box to reduce the transfer of heat generated by the light source to the outlet box.
REFERENCES:
patent: 2638531 (1953-05-01), Levy
patent: 2918569 (1959-12-01), McCormack
patent: 4044246 (1977-08-01), Domimo et al.
patent: 4104713 (1978-08-01), Chan et al.
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