Patent ID: 7447028
Filing Date: 2008-11-04
Classification: H01L

Abstract:
1. A heat dissipation device comprising: a heat sink; a fan producing an airflow flowing towards the heat sink; a cover enclosing the fan and the heat sink; and an air-guiding member positioned between the fan and the heat sink, the air-guiding member comprising an air deflector dividing the airflow produced by the fan into airstreams and guiding the airstreams of the airflow flowing towards different portions of the heat sink; wherein the air deflector comprises a plate slantways positioned between the heat sink and the fan; and wherein the air-guiding member further comprises another air deflector positioned between the fan and the heat sink, the another air deflector comprising a plate spaced from the plate of the air deflector to form a first fan duct therebetween, the first fan duct having an inlet coupled to the fan and an outlet covering a portion of the heat sink having a higher temperature, the inlet having an area larger than that of the outlet and smaller than that of the fan.