Patent ID: 7986521
Filing Date: 2011-07-26
Classification: G06F,H01L

Abstract:
1. A heat dissipation device comprising: a fin unit comprising a plurality of fins stacked together, an airflow channel being defined between each two neighboring fins; a fan comprising an air inlet and an opposite air outlet; and a fan duct communicating with the airflow channels of the fin unit and the fan, the fan duct comprising a first flue connected to the air inlet of the fan and a second flue connected to the fin unit, the second flue comprising a first side plate and a second side plate covering on two neighboring sides of the fin unit, respectively; wherein a gap is defined between each of the first and second side plates of the second flue of the fan duct and a corresponding side of the fin unit, and the gap communicates with the airflow channels; and wherein the second flue comprises a top flange extending rearwards from a rear, bottom end of the first flue and inwardly from a top end of the second side plate, the top flange located above the fin unit and enclosing top ends of the gaps.