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AUTOMATICALLY CONTROLLED LIGHTING DEVICE, AND AN INSTALLATION INCLUDING A PLURALITY OF SUCH DEVICES

  • US 20100171430A1
  • Filed: 05/07/2008
  • Published: 07/08/2010
  • Est. Priority Date: 05/10/2007
  • Status: Active Grant
First Claim
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1. A lighting device (10;

  • 42) comprising;

    a radio receiver circuit (24);

    search means (20) co-operating with the radio receiver circuit to detect and identify neighboring objects (34, 36, 38, 40) present in the proximity of the device, these neighboring objects being themselves provided with radio transmitter circuits suitable for interfacing with said radio receiver circuits; and

    control means suitable for causing a light source (12) to switch off;

    the device being characterized in that the control means;

    co-operate with the search means (20) to;

    detect the appearance or the disappearance of said neighboring objects in the radio range of the lighting device; and

    cause the light source to switch off on detecting the disappearance of at least one neighboring object, conditionally as a function of predetermined switch-off criteria; and

    operate essentially without a switch-off order being transmitted from the neighboring objects to the device.

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