| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain a heating element cooling structure which has proper heat dissipation performance at low cost, and to obtain a drive unit which is improved in reliability, by comprising the heating element cooling structure. <P>SOLUTION: The heating element cooling structure is constituted in such a manner that a refrigerant space R is formed between a heat-dissipating face 53a, connected thermally to the heating element and an opposing face 2a formed so as to oppose the heat-dissipating face 53a, a plurality of heat-dissipating fins 56 arranged erect directed toward the opposing face 2a from the heat dissipation face 53a are arranged in the refrigerant space R, in parallel with one another; and an inter-fin passage Rp where a refrigerant circulates is formed between each of the plurality of adjacent fins 56. The structure also comprises the drive unit, and the heat-dissipating fins 56 are energized toward the opposing face 2a by being deformed elastically, in a state where the heat dissipation fins 56 abut against the opposing face 2a and are formed into a meandering shape which has a plurality of curved parts along the circulating direction of the refrigerant. <P>COPYRIGHT: (C)2008,JPO&INPIT |
