Patent ID: 8381800

Claim:
A heat dissipation device, comprising: a heat sink comprising a plurality of fins overlapped with each other, an air passage channel being defined between every two adjacent fins for an airflow flowing therethrough, each of the fins defining two or more through holes therein, each of the fins comprising a main plate and an air guiding member formed at a middle portion on the main plate, the air guiding member comprising two curved bars and a straight bar, the two curved bars being located between the two or more through holes, the two curved bars extending slantwise on the main plate to respective back sides of the two or more through holes, each of the curved bars comprising a windward end and a leeward end at two opposite ends thereof, the windward ends of the two curved bars facing the airflow, and the leeward ends of the two curved bars extending to the respective back sides of the at least two through holes, the straight bar connecting between the leeward ends of the two curved bars, the straight bar and the two curved bars being connected together to form an approximately triangular closed loop structure, the air guiding member protrudes upwardly and perpendicularly from the main plate, is less than a width of the air passage channel, a top of the air guiding member is spaced from an adjacent above fin; and at least one heat pipe extending through the two or more through holes.