Halogen light fixture

Details Halogen light fixture Halogen light fixture

2000-07-25

2001-10-09

Sikder, Mohammad (Department: 2872)

Illumination

Elongated source light unit or support

With light modifier

C362S218000, C362S219000, C362S220000

Reexamination Certificate

active

06299326

ABSTRACT:

BACKGROUND OF THE INVENTION
The use of halogen lamps in light fixtures provides many advantages over the use of flourescent and incandescent lamps. Halogen light sources provide, among other benefits, pure white light, instant start-up with no flickering, and are operational at any temperature including sub freezing temperatures.
However, halogen light fixtures typically employ one or more lamps having a wattage that is often 100 watts or greater. This use of high wattage lamps increases the heat generated in and around the fixture. Thus, there is a need for light fixtures that allow and provide for the efficient dissipation of the heat generated by the lamp or lamps contained therein. Not only will the dissipation of heat prevent the fixture itself from becoming dangerously hot, it also assists in protecting the fixture's internal components from heat damage as well.
In addition, because of the high temperatures created by a halogen lamp, the possibility exists that objects located near the lamp may unintentionally combust. Consequently, there is a need for a fixture design that prevents objects or structures such as walls and the like from coming into close contact with the light generated by the fixture in order to reduce the risk of inadvertent combustion.
SUMMARY OF THE INVENTION
The present invention, therefore, is directed to a light fixture that houses halogen lamps, and more particularly, a light fixture that is safer to use than light fixtures currently in use. The invention promotes safer operation of halogen lamps by placing the lamp in a tubular fixture having opposingly located vents that use convective air flow to efficiently dissipate heat from the fixture. Moreover, by placing the halogen source in a central location within the fixture, heat is more efficiently radiated outwardly by the walls of the fixture.
In addition, the weight distribution of the fixture is such that when placed upon a flat surface, the fixture will roll in such a manner to direct light away from the surface so as to prevent combustion. Moreover, the present invention uses outwardly adjacent guards that also prevent the combustion of vertical surfaces that may be in close proximity to the lamp.


REFERENCES:
patent: 3838268 (1974-09-01), Fabbri
patent: 4449166 (1984-05-01), Sharp
patent: 4949232 (1990-08-01), Safyan
patent: 5154507 (1992-10-01), Collins
patent: 5624178 (1997-04-01), Lee, Jr.
patent: 5676458 (1997-10-01), Shemitz et al.
patent: 6053623 (2000-04-01), Jones et al.

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