| 摘要 |
PROBLEM TO BE SOLVED: To provide a radiator cooling fan control box which is capable of normal operation even when the mounting posture is inclined, preventing accumulation of water inside the box, and discharging water therefrom. SOLUTION: In the radiator cooling fan control box 1, a breathing hole 31 for preventing dew condensation is formed in a casing 11, and a rib 32 for preventing water ingress into a breathing hole 31 from the outside is provided in a vicinity of the breathing hole 31. The rib 32 is constituted by combining two kinds of a substantially U-shaped inner rib 33 surrounding about one half area around the breathing hole 31, and a substantially U-shaped outer rib 34 substantially facing the inner rib 33 and surrounding remaining about one half area around the breathing hole 31. Extension parts 45 extending to the inner side of both arm parts 38 of the outer rib 34 over the position of the breathing hole 31 are provided on both arm parts 36 of the inner rib 33. Shortened parts 46 which are separated to the outer side from the extension parts 45 of both arm parts of the inner rib in an overlapping manner and stopped at the position proximal to the breathing hole 31 are provided on both arm parts 38 of the outer rib. COPYRIGHT: (C)2008,JPO&INPIT
|
