Patent ID: 8828125

Claim:
A ventilation member comprising: a waterproof gas permeable membrane; and a support body having a through hole, one opening of the through hole being closed by the gas permeable membrane, wherein the support body includes, at an edge of the opening closed by the gas permeable membrane, a first region and a second region facing each other with the opening located therebetween, a first angled protrusion in which a peak and a trough are arranged alternately along the edge of the opening is provided in the first region, and a second angled protrusion in which a peak and a trough are arranged alternately along the edge of the opening is provided in the second region, the gas permeable membrane is joined onto the first angled protrusion and the second angled protrusion, and has a pleat shape or a wave shape in which a peak and a trough are arranged alternately along shapes of the first angled protrusion and the second angled protrusion, and both ends of the trough of the gas permeable membrane are open to permit water flow from the gas permeable membrane surface.