Motor vehicle headlight activation apparatus for inclement weather conditions

  • US 5,374,852 A
  • Filed: 09/17/1993
  • Issued: 12/20/1994
  • Est. Priority Date: 09/17/1993
  • Status: Expired due to Fees
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First Claim
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1. A lighting control apparatus for a motor vehicle, said motor vehicle having an electrical power supply, an ignition switch, lights, a lighting control switch for illuminating said lights, a wiper device, and a wiper control switch for actuating said wiper device, said lighting control apparatus automatically illuminating said lights whenever said wiper device is actuated, said lighting control apparatus comprising:

  • a photosensitive element electrically connected in series between said electrical power supply and said lights;

    said photosensitive element being illuminated by ambient light;

    said photosensitive element having a first substantially conductive state whenever the intensity of said ambient light is below a first threshold value;

    said photosensitive element additionally having a second substantially nonconductive state whenever said intensity of said ambient light exceeds a second threshold value;

    a shutter member movable between a first position substantially shielding said photosensitive element from said ambient light and a second position substantially exposing said photosensitive element to said ambient light; and

    movement means for moving said shutter member to said first position substantially shielding said photosensitive element from said ambient light whenever said wiper control switch actuates said wiper device.

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