| 摘要 |
PROBLEM TO BE SOLVED: To provide a drainage structure for a waterproof box that drains water inside and prevents water ingress from the outside. SOLUTION: A flexible tube 9, which is positioned gravitationally downward, which has a bent section 10 that is bent gravitationally upward, and which flexes when pressure is applied, is installed on the drain 5 of a waterproof box 1. The flexible tube 9 is preferably curved roughly in an S-shape or a J-shape. The drain 5 is formed from a cylindrical gutter wall 6 extending gravitationally downward. The flow path 7 of this gutter 6 is preferably bent. |
