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    • 82. 发明专利
    • CIRCUIT-ACCOMMODATING BODY
    • JP2000315880A
    • 2000-11-14
    • JP12585599
    • 1999-05-06
    • TOSHIBA CORP
    • TADA NOBUMITSU
    • H05K7/20H01L23/467
    • PROBLEM TO BE SOLVED: To miniaturize a unit and at the same time efficiently transfer the amount of heat being generated inside to the fresh air by providing a cooling pipe for transferring heat from the inside to the fresh air in a circuit- accommodating body. SOLUTION: In an enclosure 8, a large heat sink 3 is mounted to an arbitrary outer surface 8a, a power element 7 is mounted to the inside of the arbitrary outer surface 8a, and heat from the power element 7 is transferred to the fresh air by the heat sink 3. Then, the enclosure 8 is provided with cooling pipes 9a and 9b that penetrate the inside of the enclosure 8, and a power element 5 is mounted to a wiring board 4 while it is in contact with one outer-periphery surface of the cooling pipes 9a and 9b. Heat being generated from the power element 5 is directly transferred to the cooling pipes 9a and 9b being in contact and further is cooled by the fresh air that passes the inside of the cooling pipes 9a and 9b, thus suppressing the increase in an internal temperature and increasing packaging density.