Patent ID: 8430153

Claim:
A heat dissipation device comprising: a base; a first heat sink mounted over the base, the first heat sink comprising two fin groups, one of the fin groups stacked on the other fin group, each of the fin groups comprising a plurality of fins spreading radially from a center of the fin group to a periphery of the fin group along horizontal directions, a central receiving hole defined in the first heat sink, the central receiving hole being an annular through hole with an open top end and an open bottom end, the bottom end of the central receiving hole closed by the base; two first heat pipes each connecting the base and the fin groups; said two first heat pipes further connecting said first heat sink to a second heat sink, said second heat sink being located at a lateral side of the first heat sink; a second heat pipe connecting the base and the second heat sink; and a heat conductive member, the heat conductive member inserted in the central receiving hole and mounted on the base.