Patent ID: 8132615

Claim:
A heat dissipation device having bidirectional air channels, comprising: a fan, and a heat sink mounted under the fan, the heat sink comprising: a heat dissipation fins assembly comprising a plurality of heat dissipation fins, a guide plate extending from a bottom end of each of the heat dissipation fins, the guide plate being connected to an adjacent heat dissipation fins, the heat dissipation fins being connected in series by the guide plates thereby defining a plurality of air channels, each heat dissipation fin comprising a through hole defined therein aligned with each other; a heat spreader disposed under the heat dissipation fins assembly, a through groove being formed in the heat spreader; and a heat pipe passing through the through hole and the through groove; an airflow blown from the fan flowing through the air channels and being vent into ambient of the heat spreader along the guide plate in two directions.