Patent ID: 7447020
Filing Date: 2008-11-04
Classification: H01L

Abstract:
1. A heat sink assembly comprising: a heat receiver; a heat sink comprising a plurality of spaced heat dissipation fins, a plurality of channels between the heat dissipation fins; a fan cover secured to the heat receiver and the heat sink; and a fan carried by the fan cover, the fan producing a forced airflow through the fan cover to the heat dissipation fins; wherein a cavity is formed between one end of the heat sink and the fan cover and the forced airflow having a portion flowing along an outer edge of the end of the heat sink from a region of the cavity to another region of the cavity, two adjacent points on the outer edge of each heat dissipation fin respectively having different distances to the fan cover; and wherein the heat sink defines a slot at top thereof, the fan cover having a plate fitting in the slot thereby mounting the fan cover on the heat sink.