Patent ID: 8220527

Claim:
A heat dissipation device, comprising: a heat spreader; a heat sink assembly located above the heat spreader; a heat pipe comprising an evaporation section engaged in the heat spreader, two arc-shaped condensation sections thermally inserted in the heat sink assembly, and two connecting sections interconnecting corresponding condensation sections and the evaporation section, the condensation sections being coplanar with each other and located in a same circle; and an additional heat pipe, the additional heat pipe comprising an evaporation section engaged in the heat spreader, two arc-shaped condensation sections thermally inserted in the heat sink assembly, and two connecting sections interconnecting corresponding condensation sections and the evaporation section of the additional heat pipe, the condensation sections of the additional heat pipe being coplanar with each other and located in a same circle; wherein the circle where each condensation section of the additional heat pipe is located has a radius larger than that of the circle where each condensation section of the heat pipe is located.