Patent ID: 6738256
Filing Date: 2004-05-18
Classification: G06F

Abstract:
A heat sink attached externally on a bottom portion of a portable computer comprising the heat sink placed at a rear lower aspect of the portable computer is characterized that:the heat sink is a flat casing assembled by an upper and a lower casings; the front aspect of the heat sink extends to form a bearing plate; at least one fan is installed inside the heat sink; on the upper aspect of the heat sink, an air inlet is disposed at the upper aspect of the fan; an air outlet is disposed at the front aspect of the bearing plate; a current guide board is disposed at the lower aspect of the fan in the heat sink; the bearing plate affixes to the rear bottom plane of the portable computer such that through the fan, the air current enters from the air inlet and discharges outwardly from the air outlet at the front aspect of the bearing plate thereby allowing the cooling air current to enter from the bottom portion of the portable computer for achieving a heat dissipation effect.