Patent ID: 7914184

Claim:
An LED illuminating device, comprising: an optical section at a bottom end of the LED illumination device, the optical section comprising a light source and a light output housing around the light source; an electrical section at a top end of the LED illumination device, the electrical section electrically connecting with the light source; and a heat dissipation section between the optical section and the electrical section comprising: a mounting seat to which the light source is attached; a heat pipe comprising an evaporation section and at least one condenser section, the evaporation section fixed on the mounting seat and thermally connected with the light source; and a heat sink in which the at least one condenser section of the heat pipe is received, the heat sink comprising a plurality of fins each comprising at least one umbrella-shaped portion, each of the umbrella-shaped portions comprising a main body perpendicular to the at least one condenser section of the heat pipe and two flanges angling downward from two opposite edges of the main body towards the light source, a plurality of air venting holes being defined in the main body and the flanges of each fin, whereby air between each two neighboring fins is heated and rises via the air venting holes to a top side of the heat sink during operation of the LED illuminating device.