Patent ID: 8294339

Claim:
A heat sink including: a heat-conducting base; a heat-dissipating fin set comprising a plurality of heat-dissipating thin fin plates arranged radially at intervals for enclosing the heat-conducting base, a central hole and an accommodating space being formed inside the heat-dissipating fin set, the heat-conducting base being received in the central hole with its peripheral brought into thermal contact with first inner portions of the heat-dissipating thin fin plates, at least one annular groove in communication with the accommodating space being formed on second inner portions of the heat-dissipating thin fin plates; and at least one wound heat pipe comprising an evaporating section at one distal end brought into thermal contact with the heat-conducting base, and a condensing section at the other distal end received in the annular groove and brought into thermal contact with the heat-dissipating thin fin plates.