Cooing Design with Air Vent for PCB in Wahing Machine

摘要

The present invention is provided with a vent (Vent) in the case forming the installation space of the PCB switching element and the heat sink to improve the heat dissipation of the insufficient PCB by only the heat sink, to extend the life of the washing machine and to ensure the reliability of the product, It relates to a PCB heat dissipation structure of a washing machine provided. The prior art has a problem in that the case is sealed and heat transfer due to convection from the heat sink to air in the case does not occur well.;The present invention is a conventional washing machine in which a PCB and a heat sink are installed, wherein the PCB and the heat sink are waterproofed and protected against air convection in the washing machine case in which the PCB and the heat sink are installed; And characterized in that it comprises a vent formed of an exhaust port formed in the upper,;The inlet port 110 and the exhaust port 120 of the vent formed in the case 10 is provided with a waterproof means for preventing water inflow into the PCB and the heat sink installation space, respectively,;The waterproof means provided in the inlet port 110 of the ventilation opening, the inlet port 110 is formed of a water-repellent plate 130 is formed in a zigzag spaced apart from the case lower portion formed, the inlet port 110 and the exhaust port 120 In the subtraction means 123 for reducing the speed and quantity of water flowing in, characterized in that the attachment of the net or sponge.