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Spot air-conditioner

  • US 5,097,672 A
  • Filed: 07/18/1990
  • Issued: 03/24/1992
  • Est. Priority Date: 11/18/1988
  • Status: Expired due to Fees
First Claim
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1. A spot air-conditioner for drawing in room air and generating conditioned air;

  • a blow-off duct rotatably mounted on said air-conditioner for blowing off said conditioned air;

    duct drive means for rotating said blow-off duct relative to said air-conditioner in order to change the wind direction of said duct;

    means for detecting a body of a person to be cooled in an area which is cooled by said conditioned air; and

    wind direction control means, responsive to a human body detected signal outputted from said human body detection means, for controlling said duct drive means to direct said blow-off duct toward the person to be cooled;

    said human body detection means including a human body detection device which detects the presence of a person to be air-conditioned in a plane detection region against a background, said human body detection means includinga pair of radiation means for alternately radiating infrared rays, each having a fixed radiation directional angles in said detection region and disposed at a certain opening angle so that said radiation directional angles do not overlap each other;

    single radiation receiving means interposed between the radiation means in said detection region for receiving reflection of the infrared rays radiated from said radiation means, said radiation receiving means having a fixed radiation receiving directional angle which partially overlaps with the radiation directional angles of each radiation; and

    human body detection and determination means responsive to the output from said radiation receiving means for outputting a human body detected signal when the amounts of reflection of infrared rays radiated from each radiation means both exceed a set value.

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