Patent ID: 8199508

Claim:
A heat dissipation device for dissipating heat generated by a heat-generating electronic element mounted on a top surface of a printed circuit board, the printed circuit board defining a plurality of first through holes, the heat dissipation device comprising: a heat spreader for being arranged at a top side of the printed circuit board, the heat spreader defining a plurality of second through holes corresponding to the first through holes, respectively; a first heat sink located over the heat spreader; a plurality of second heat sinks for being arranged at a bottom side of the printed circuit board; a plurality of gaskets and helical springs for being applied between the printed circuit board and the second heat sinks; and a plurality of heat pipes for extending through the second through holes of the heat spreader and the first through holes of the printed circuit board to thermally connect the first and second heat sinks to the heat spreader, each of the heat pipes extending through a corresponding gasket and helical spring to engage in a corresponding one of the second heat sinks with the corresponding gasket abutting against the bottom side of the printed circuit board and the corresponding helical spring compressed between the corresponding gasket and second heat sink when the heat dissipation device is assembled on the heat-generating electronic element.