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LED illuminating device and light engine thereof

  • US 8,007,143 B2
  • Filed: 06/03/2009
  • Issued: 08/30/2011
  • Est. Priority Date: 03/05/2009
  • Status: Expired due to Fees
First Claim
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1. An LED illuminating device, comprising:

  • an optical section being provided with a light source therein;

    an electrical section being electrically connected with the light source; and

    a heat dissipation section located between the optical section and the electrical section, the heat dissipation section being provided with a loop heat exchange device, the loop heat exchange device comprising a hollow metal base and a plurality of metal fins extending outwardly from the hollow metal base, a hermetical chamber being defined in the hollow metal base, the hermetical chamber being cylindrical and having a U-shaped cross section along an axial direction of the hollow metal base, a wick structure being attached to an inner surface of the hermetical chamber, a working fluid being saturated in the wick structure, the light source being thermally attached to the hollow metal base.

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