| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a housing which ensures waterproofness and air permeability without using a waterproof ventilation film and a mischief prevention structure of the film and complicating structures of a door and the housing even when the housing does not include a blind plate and a wind protection plate. <P>SOLUTION: A housing 1 has a respiration structure and includes an air duct for respiration 2 which has an upper vent hole 2a opening at an upper internal space of a housing body 11, and a lower vent hole 2b opening at a lower part of the housing body and communicating with outer air. The air duct for respiration is formed so as to have a length that causes rain drops or water droplets intruding from the lower vent hole to drop due to its self-weight before reaching the upper vent hole. <P>COPYRIGHT: (C)2013,JPO&INPIT |
