Patent ID: 7753110

Claim:
A heat dissipation device adapted for removing heat from a heat generating electronic device, the heat dissipation device comprising: a base adapted for absorbing heat from the electronic device; a heat spreader located above the base; a first fin assembly comprising a plurality of fins arranged between the base and the heat spreader, with a channel defined between every two adjacent fins, each of the fins extending along a front-to-rear direction, and the channel extending along the front-to-rear direction; a heat pipe thermally contacting the base and the heat spreader, the heat pipe comprising an evaporating portion thermally contacting the base, a condensing portion thermally contacting the heat spreader, and a connecting portion interconnecting the evaporating portion and the condensing portion, the evaporating portion and condensing portion being parallel to the fins, and the connecting portion located at a rear side of the first fin assembly; and two additional heat pipes being symmetrically slantwise arranged at flanks of the heat pipe; wherein the condensing portion of the heat pipe is of larger length than that of the two additional heat pipes.