| 摘要 |
PROBLEM TO BE SOLVED: To simultaneously treat the heat radiation of a heat generation component and the heat insulation of an entire casing. SOLUTION: Air for cooling of which temperature is adjusted, such as cabin air, is introduced to a heat sink 12 for forced air-cooling provided in a duct 111 to cool an internal component and to adjust temperature. Environmental variations in a casing body 11 are reduced even if covers 113-117 are attached while a slit gap is formed to introduce the air for cooling to the periphery of the casing and the external environment of the covers 113-117 is severe. When a pressure loss greatly differs between the heat sink 12 and the periphery of the casing body 11, or when required flow velocity differs, an appropriate orifice 119, or the like is provided to share the air for cooling. COPYRIGHT: (C)2009,JPO&INPIT
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