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Advertising device

  • US 4,853,678 A
  • Filed: 02/01/1988
  • Issued: 08/01/1989
  • Est. Priority Date: 02/05/1987
  • Status: Expired due to Term
First Claim
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1. An advertising apparatus comprising:

  • (a) a casing;

    (b) a power source arranged in said casing;

    (c) passive infra-red detection means arranged within said casing and connected with said power source for detecting the presence of at least one person in an area of detection comprising a substantially triangular field having an apex at said detection means, and an angle of at least 5 degrees at said apex;

    (d) display means connected with said casing and said power source, said display means being directed toward said area of detection; and

    ,(e) control means arranged in said casing and connected with said display means for activating and controlling said display means in response to operation of said detection means,whereby said display means is operable to display a message to an individual when the individual enters said area of detection.

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