| 摘要 |
PROBLEM TO BE SOLVED: To prevent the formation of the trace of foul water produced by rain water dropping down to the wall surface of a building after the rainwater adheres to the external surface of a hood. SOLUTION: A louver for air vent is formed in such a way that the lower edge of a hood 14 is formed in an inclined state so that the front section of the edge 21 may become lower than the rear end of the edge 21 and an upward bent section 22 is formed toward the outside of the hood 14 within a required range between the rear end and the front part of the edge 21. Therefore, the rainwater flowing down to the bent section 22 drops down from the front part of the hood 14 which is separated from the wall surface of a building. |
