Lighting fixture with diffuser for light and air

Details Lighting fixture with diffuser for light and air Lighting fixture with diffuser for light and air

1987-12-07

1990-03-06

Husar, Stephen F.

Illumination

Elongated source light unit or support

With or including transparent or translucent member

362 74, 362282, 362260, 362291, 362294, F21S 302, B60Q 100, F21V 2900

Patent

active

049071424

ABSTRACT:
A fixture for a fluorescent lamp includes a diffuser panel. The diffuser panel has a frame and longitudinal elements supported by the frame and spaced apart from one another. At least some of the elements are constructed of a material to allow diffusion of impinging light. Preferred materials are translucent or transparent, such as glass or plastic. The diffuser panel also functions as an air diffuser. Provision of a nozzle in the base of the fixture allows air to flow through the panel by a sucking effect created by high velocity forced air flowing through the nozzle. This results in fixture cleaning and temperature equalization. The fixture is particularly adapted to be mounted in a moving vehicle. For this purpose, the panel is designed to be tamper-resistant and to provide easy maintenance. The diffuser panel, when a latch is opened, may be lowered by rotation to provide access to the lamp and ballast. When the fixture is installed in a public vehicle, a handrail is provided which forms part of the panel lowering mechanism.

REFERENCES:
patent: 2238847 (1941-04-01), Dreyfuss
patent: 2284534 (1942-05-01), Orth
patent: 2587807 (1952-03-01), Arenberg et al.
patent: 3152277 (1964-10-01), Cutler et al.
patent: 3210875 (1965-10-01), Schwenkler
patent: 3211904 (1965-10-01), Schwenkler
patent: 3348465 (1967-10-01), Kruger
patent: 4157584 (1979-06-01), Bhatt
patent: 4625267 (1986-11-01), Mikaloni

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