HEAT SINK FOR PRINTED CIRCUIT BOARD HAVING AIR CIRCULATION STRUCTURE CAPABLE OF INCREASING AIR CONTACT AREA OF THE HEAT SINK

摘要

PURPOSE: A heat sink is provided to increase the air contact area of the heat sink and achieve improved cooling effects by permitting air to circulate through the heat sink. CONSTITUTION: A heat sink(30) is installed at a PCB so as to absorb and radiate heat generated from elements. The heat sink has an air circulation portion(34) having an opening(32). The heat sink has a plurality of air inlet holes(36) for communicating an intermediate part of the air circulation portion to outside so as to circulate air.