Patent ID: 7643293
Filing Date: 2010-01-05
Classification: F28D,H01L,Y10T

Abstract:
1. A heat dissipation device adapted for dissipating heat generated by an electronic component mounted on a printed circuit board, the heat dissipation device comprising: a first heat sink thermally contacting with the electronic component, the first heat sink having a base, a groove defined in the base, the groove enclosed by a top plate, two sidewalls slantwise extending downwardly and inwards from opposite edges of the top plate, whereby a width of a bottom portion of the groove is narrower than that of a top portion of the groove; a second heat sink comprising a plurality of fins, each of the fins comprising an arched body and two legs extending downwardly from lateral ends of the body, respectively; a fan sandwiched between the first and second heat sinks, the first heat sink supporting the fan, the legs of the fins of the second heat sink engaging with lateral sides of a top surface of the fan; and a heat pipe comprising an evaporating portion and an condensing portion, the evaporating portion being directly pressed in the groove and fully contacting with the groove of the base of the first heat sink, wherein the evaporating portion is cylindrical before fully engaged in the groove, the evaporating portion is flattened when it is fully engaged in the groove and has a corresponding configuration of the groove, the condensing portion extending through the fins of the second heat sink.