COOLER FOR CIRCUIT MODULE AND PORTABLE ELECTRONIC APPARATUS EMPLOYING IT

摘要

PURPOSE: To provide a portable electronic apparatus in which the heat dissipation member and cover can be standardized while enhancing the cooling effect of circuit element. CONSTITUTION: The portable electronic apparatus comprises a circuit board 43 mounting a TCP and a hole 158 larger than the TCP is made through the circuit board. A cover 167 covering the TCP and lead is fixed to the rear of the circuit board and a heat dissipation member 166, having a protrusion touching the TCP, is fixed through the hole to the surface 43a of circuit board. The heat dissipation member is fixed detachably with a heat sink 201. The heat sink 201 comprises a heat dissipation panel 202 touching the heat dissipation member, a large number of heat dissipating protrusions 205 projecting from the heat dissipation panel 202, and a motor fan 220 supported on the heat dissipation panel 202 and introducing the cooling air to the surroundings of the heat dissipating protrusions 205.