Patent ID: 7992624

Claim:
A heat sink module, comprising: a heat transfer tube, said heat transfer tube comprising a plurality of locating grooves equiangularly spaced around the periphery thereof; a radiation fin set, said radiation fin set comprising a plurality of radiation fins respectively fastened to the locating grooves of said heat transfer tube, each said radiation fin comprising a plurality of retaining lugs respectively protruding from top and bottom sides thereof, the retaining lugs of one said radiation fin being respectively fastened to the retaining lugs of another said radiation fin; and a heat transfer panel affixed to a bottom side of said heat transfer tube for direct contact with a heat source to transfer heat to said heat transfer tube and said radiation fin set for dissipation, wherein said heat transfer panel is a stepped flat panel; each said radiation fin of said radiation fin set has a plurality of said retaining lugs arranged at the bottom side thereof at different elevations to fit the stepped configuration of said heat transfer panel.