Patent ID: 7606030

Claim:
A heat dissipation device for removing heat from a heat-generating electronic component mounted on a printed circuit board enclosed in a computer housing, comprising: a spreader adapted for contacting with the heat-generating electronic component; a heat sink comprising a base plate and a plurality of outer fins extending upwardly from a top surface of the base plate; a heat pipe thermally connecting the heat sink and the spreader together; and a plurality of fasteners each comprising a fixture having a head at a top thereof, a spring encircling the fixture and a gasket mounted around the fixture between the spring and the head; wherein the fixtures extend through the base plate of the heat sink and the spreader and each have a lower end being screwed downwardly into the printed circuit board, the gaskets are respectively compressed between the heads and the base plate, an edge of the base plate of the heat sink is joined with the computer housing, and cooperates with the computer housing to form a hermetic encapsulation which encloses the heat-generating electronic component.