System for reducing condensation in enclosed lamp housings
DCFirst Claim
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1. A vent system for reducing condensation in enclosed vehicle front lamps, comprising:
- an enclosed vehicle front lamp housing having an interior, an exterior surface, and at least one vent opening communicating between the atmosphere external to the lamp housing and the interior, with a total vent opening area of at least 132 mm2; and
a condensation vent comprising at least one microporous, water vapor permeable material covering said at least one vent opening, whereby said condensation vent permits water vapor passage between the interior of the lamp housing and the atmosphere.
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Abstract
The invention is directed to a material and system for reducing condensation in enclosed vehicle lamp housings, and more particularly to a condensation vent comprising a water vapor material within, on or integral with the housing to reduce the condensation and prevent or minimize entry of liquid water and other foreign matter.
63 Citations
24 Claims
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1. A vent system for reducing condensation in enclosed vehicle front lamps, comprising:
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an enclosed vehicle front lamp housing having an interior, an exterior surface, and at least one vent opening communicating between the atmosphere external to the lamp housing and the interior, with a total vent opening area of at least 132 mm2; and
a condensation vent comprising at least one microporous, water vapor permeable material covering said at least one vent opening, whereby said condensation vent permits water vapor passage between the interior of the lamp housing and the atmosphere. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A vent system for reducing condensation in enclosed vehicle front lamps, comprising:
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an enclosed vehicle front lamp housing having an interior, an exterior surface, and at least one vent opening communicating between the atmosphere external to the lamp housing and the interior, with a total vent opening area of at least 132 mm2; and
a condensation vent comprising at least one expanded PTFE membrane having a urethane coating thereon covering said at least one vent opening, said condensation vent being attached to said lamp housing by an adhesive bond, whereby said condensation vent permits water vapor passage between the interior of the lamp housing and the atmosphere.
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14. A vent system for reducing condensation in enclosed vehicle rear lamps, comprising:
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an enclosed vehicle rear lamp housing having an interior, an exterior surface, and at least one vent opening communicating between the atmosphere external to the lamp housing and the interior, with a total vent opening area of at least 235 mm2; and
a condensation vent comprising at least one microporous, water vapor permeable material covering said at least one vent opening, whereby said condensation vent permits water vapor passage between the interior of the lamp housing and the atmosphere. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification