Heat dissipation structure of the electrical junction box and the heat dissipation device and heat dissipation method thereof

摘要

PPROBLEM TO BE SOLVED: To provide a heat radiating structure of an electrical junction box, a heat radiating device thereof, and a heat radiating method thereof, capable of restraining increase in the temperature of the electrical junction box assembled onto a reinforcement of a vehicle or the like. PSOLUTION: This electrical junction box comprises a reinforcement 63, a case 13 assembled onto the reinforcement 63, semiconductor switches 41SB3/SB, 42SB3/SB, 43SB3/SB, 44SB3/SBattached to the case 13. Radiating plates 41aSB3/SB, 42aSB3/SB, 43aSB3/SB, 44aSB3/SB, which release the heat generated at the bodies of the semiconductor switches 41SB3/SB, 42SB3/SB, 43SB3/SB, 44SB3/SB, are formed on the semiconductor switches 41SB3/SB, 42SB3/SB, 43SB3/SB, 44SB3/SBin a protruding manner, the semiconductor switches 41SB3/SB, 42SB3/SB, 43SB3/SB, 44SB3/SBare set adjacent to the reinforcement 63, and the fluid kept at a temperature lower than those of the semiconductor switches 41SB3/SB, 42SB3/SB, 43SB3/SB, 44SB3/SBis introduced into the reinforcement 63. Thus, the temperatures of the semiconductor switches can be maintained so as to be low. PCOPYRIGHT: (C)2003,JPO