| 摘要 |
PROBLEM TO BE SOLVED: To prevent a control board from undergoing a fraudulence when the control board employs a structure of being closed with a board box provided with a heat radiation hole. SOLUTION: In the board box 100 in which the control board (main board) 31 is housed, the heat radiation hole 131 for radiating the heat generated in the control board 31 is provided in the top surface 110 and a plate-like intermediate member 201 having a heat radiation hole 231 is provided between the top surface 110 and the control board 31 inside the board box 100. The heat radiation hole 231 is positioned off the perpendicular line extending from the control board 31 to the heat radiation hole 131. COPYRIGHT: (C)2005,JPO&NCIPI
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