| 摘要 |
PROBLEM TO BE SOLVED: To improve maintainability by reducing entering of rainwater and a foreign substance into a room by an opening having a protrusion formed at a hood part, without hindering other performance such as ventilation resistance and the like.SOLUTION: In a configuration of an external wall terminal ventilation opening where an opening 11 is provided having a protrusion 10 communicating with outside air at an upper part toward the inside of a hood part 9, even when wind and rain enter through an opening 6 of an undersurface 5, wind pressure is released through the opening 11 of the protrusion 10, and the rainwater drops through the opening 6 of the undersurface 5. Also, a foreign substance which has flown collides with an outer surface 12 of the protrusion 10 and guided to drop downward, so that it does not enter the hood part 9. Thus, when configuring a net 7 for preventing entering of a foreign substance into a room, it can be disposed on the undersurface 5 of the hood part 9, so that a clogging state can be visually confirmed and maintainability can be improved. |
