Patent ID: 8330337
Filing Date: 2012-12-11
Classification: F21V,F21Y,F28D

Abstract:
1. A heat dissipation device comprising: a heat absorption board adapted for contacting a light source to absorb heat therefrom; a fin assembly located over the heat absorption board; a heat sink located between the heat absorption board and the fin assembly; two heat pipes thermally connecting the heat absorption board and the fin assembly; a fan; and a fan holder fixing the fan on the fin assembly, the fan holder comprising a supporting board supporting the fan and a plurality of supporting posts connecting an outer edge of the heat absorption board and an outer edge of the supporting board, the supporting posts being embedded in the fin assembly; wherein each of the heat pipes comprises an evaporator section and two condenser sections extending from two opposite ends of the evaporator section, the evaporator sections of the heat pipes contacting the heat absorption board, the condenser sections extending through the fin assembly; and wherein the heat sink comprises a pair of first heat dissipating branches and a pair of second heat dissipating branches, the first heat dissipating branches and the second heat dissipating branches being alternate with each other, the first heat dissipating branches contacting the evaporator sections of the heat pipes, the second heat dissipating branches being located between the heat pipes.