| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent infiltration of water into a battery unit having an air-cooled structure and set the same compact in a simple structure. <P>SOLUTION: In the cooling duct structure for the battery unit 19 of air-cooling system, a case for a cooling fan 27 is projected upward from the top face of the battery unit 19, and a cooling duct 26 is extended out of the case for the cooling fan 27. A projecting service plug 29 is disposed on the top face of the battery unit 19, and the cooling duct 26 is extended toward the projecting service plug 29. An opening end of the cooling duct 26 is located around the projecting service plug 29. <P>COPYRIGHT: (C)2012,JPO&INPIT |
