Ventilating means for spotlights on automotive vehicles

Illumination – Vehicle steering mechanism or element moves pivoted lamp or... – Tie rod element controlled

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362 74, 362294, F21M 300, F21V 2900

Patent

active

054404576

ABSTRACT:
A spotlight assembly (10) mounted on the roof (R) of an automotive vehicle is manually actuated from a handle (28) to direct a light beam from a lamp unit or assembly (16) in a desired direction. Lamp unit (16) has a generally air tight space formed between a transparent lens (62) and a reflector (40). An inlet opening (63) is provided in a gap in a gasket (58) between the reflector (40) and lens (62) to permit air to enter the interior space. A discharge opening (65) is provided in the bottom of each bowl portion (46) of the reflector (40) to permit the discharge of air from the inner space of the lamp unit (16). A baffle attachment (64) is provided beneath each discharge opening (65) when the lamp unit (16) is in a retracted position as shown in FIG. 5. Baffle attachment (64) has a pair of vanes or baffles (70) which converge in a rearward direction toward the discharge opening (65) to create a venturi effect. During travel of the automotive vehicle, air passing through the baffle attachment (64) crates a suction at discharge opening (65) to draw moisture and air from the interior of the lamp unit (16). Air pressure within the interior of the lamp unit (16) is equalized as the lamps (52) heat and cool during on/off cycles of normal use.

REFERENCES:
patent: 4630029 (1986-12-01), Hayward
patent: 4707014 (1987-11-01), Rich
patent: 4937710 (1990-06-01), Hurley et al.
patent: 5091828 (1992-02-01), Jincks et al.
patent: 5217291 (1993-06-01), Meyer
patent: 5251111 (1993-10-01), Nagengast et al.
patent: 5367438 (1994-11-01), Deslandres

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