| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that a conventional ventilation opening is made of stainless steel or plastics and a supply opening is in contact with a wall so that the wall gets stained and hindrance is encountered in designing of spray- coated outer walls or the like. SOLUTION: A material of pottery or ceramics is used for the purpose of being matched to color or material of an outer wall in designing. A front part 1 of a lid shape is provided for preventing wind, rain, dust, insects, birds or the like from directly entering an inlet 3. Projected parts 4a and 4b are provided on an outer side and an inner side of a building frame and a raised part 2 is provided on the inner side. A drain hole 7 with an inclination toward the outer side is formed in a side wall of the raised part 2. |
