| 摘要 |
PROBLEM TO BE SOLVED: To provide a structure of the ventilation part of a waterproof case having high durability against high pressure cleaning water.SOLUTION: In a structure of the ventilation part 20 of a waterproof case 70, a ventilation film cover 30 has an outer edge annular protrusion 32 protruding from the outer edge of a disc part 31 to the rear side, and an arcuate slit 33 caves in from the front side face 31A of the disc part 31 to the outer edge annular protrusion 32, and opens to the inner peripheral surface 32A thereof. The inner side face 33B on the center side of the disc part 31 in the arcuate slit 33 is arranged flush with the inner peripheral surface 32A of the outer edge annular protrusion 32. Consequently, the pressure of high pressure cleaning water is less likely to be applied to a ventilation film 40 through the arcuate slit 33, and thereby durability of the ventilation part 20 against high pressure cleaning water is increased. |
