Patent ID: 7609521

Claim:
A heat dissipation device comprising: a fin assembly comprising a plurality of fins having a bottom face at a bottom thereof; a base plate being smaller than the bottom face of the fin assembly, having a first surface adapted for contacting with a heat-generating electronic component and a second surface opposite to the first surface; a heat pipe comprising an evaporation portion thermally engaging with the second surface of the base plate, and a curved portion extending from the evaporation portion and projecting beyond the base plate; and a heat spreader being curved and comprising a curved section thereof having a profile similar to the curved portion of the heat pipe, the curved section having a first face engaging with the bottom face of the fin assembly and a second face thermally engaging with the curved portion of the heat pipe; wherein the heat spreader defines a groove at the second face thereof, the groove thermally receiving the curved portion of the heat pipe therein; wherein the curved portion of the heat pipe is L-shaped, the curved section of the heat spreader is L-shaped corresponding to the curved portion of the heat pipe; wherein the heat pipe is U-shaped, the curved portion of the heat pipe comprises a condensation portion parallel to the evaporating portion of the heat pipe and a connecting section connecting the evaporation portion and the condensation portion; wherein the heat spreader comprises an additional section extending from the curved section thereof and cooperating with the curved section to define a U-shaped profile, the evaporation portion of the heat pipe is sandwiched between the additional section of the heat spreader and the base plate.