Headlight for vehicles, in particular motor vehicles

Details Headlight for vehicles, in particular motor vehicles Headlight for vehicles, in particular motor vehicles

1987-05-13

1988-06-07

Davis, Jr., Albert W.

Illumination

Sound equipment illuminator

55385C, 55387, 55385R, 362373, 362294, F21M 300, F21V 2900

Patent

active

047500930

ABSTRACT:
The present invention relates to a headlight for vehicles with an interior space enclosed by the reflector and the front cover lens or by the housing and the front cover lens, containing air which is in communication with the atmospheric air surrounding the headlight through the inlet and outlet openings of a duct which is formed by a tube, fabricated from substantially air-impermeable material, projecting from the outside into the interior of the headlight. A reversibly-acting hygroscopic desiccating agent is filled into the duct which provides only a slight resistance to the flow of air into, or out of, the interior of the headlight. The desiccating agent contained in the duct has such an area of contact with the moist air within the headlight that it will absorb enough of the moisture from the air within the headlight, even during the periods of time when the motor vehicle is standing idle, so that condensation of water within the headlight, due to falling temperature, will be avoided. The present invention achieves this object by providing several openings in the walls of the end section of the tube, which projects into the interior of the headlight, to enlarge the contact zone between the desiccating agent and the air within the headlight.

REFERENCES:
patent: 2976950 (1961-03-01), Smith
patent: 4015114 (1977-03-01), Paejanen et al.

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