Headlight assembly humidity control system

An apparatus and method for reducing and preferably eliminating the condensation in enclosed lamp or light housings is disclosed. The vent system of the present invention prevents both liquid and vapor forms of water or other liquid from entering the lamp housing. The vent system (200, 200', 21...

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Bibliographische Detailangaben
Hauptverfasser:	RICHARD P. DEJONG, PAUL A. SCHMELING, DAVID G. FERRIS, DANIEL E. ADAMEK, KIRK A. SCHNEIDER
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF HEATING LIGHTING MECHANICAL ENGINEERING NON-PORTABLE LIGHTING DEVICES STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR SYSTEMS THEREOF VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS WEAPONS
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Beschreibung
Zusammenfassung:	An apparatus and method for reducing and preferably eliminating the condensation in enclosed lamp or light housings is disclosed. The vent system of the present invention prevents both liquid and vapor forms of water or other liquid from entering the lamp housing. The vent system (200, 200', 210) comprises a water vapor permeable membrane (202), a dessicant (101), and a diffusion channel (203) positioned exterior to the lamp housing (10) and connected to the interior of the lamp housing by an elongated duct through which air from the lamp housing must pass prior to passing through the desiccant, diffusion channel or membrane. The vent system can be positioned on the exterior of the lamp housing, with the duct extending into the interior of the lamp. The duct (207, 207') preferably extends in close proximity to the light bulb (16) in the lamp housing.