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Illumination unit for normal and emergency operation

  • US 20030141819A1
  • Filed: 10/15/2002
  • Published: 07/31/2003
  • Est. Priority Date: 01/28/2002
  • Status: Active Grant
First Claim
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1. An illumination unit, comprising:

  • a) a lamp;

    b) an adaptor for attaching the electrical contacts of said unit to contacts of a socket being connected to an electricity network feeding said unit through a switch, said switch electrically connects/disconnects at least one contact of said unit to/from said electricity network, while being in its conductive/nonconductive state, respectively;

    c) a rechargeable element for supplying electrical power form to said lamp during emergency period, when said electricity network fails; and

    d) an electronic circuit for automatically detecting the state of said switch and failure of said electricity network and to operate said lamp;

    said electronic circuit being operative to;

    d.1), disconnect said unit from said rechargeable element from said electricity network, if failure is detected whenever said switch being in its conductive state, or otherwise, d.2) to disconnect said unit from said electricity network and from said rechargeable element whenever said switch being in its nonconductive state.

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