| 摘要 |
PURPOSE:To employ a insect-screening net body and permit the removal of adhering substances to the insect-screening net body simply, in a ventilating fan effecting air feeding operation from outdoor into indoor. CONSTITUTION:A frame body 40 is attached to a wall surface 2 so as to surround a fan 15 attached to the wall surface 2. A net body 41 is attached to the frame body 40 so as to be opposed to an impeller 17 and a vibrating piece 42 is provided on the net body 41 while a receiving pan 43, receiving dropped matters from the net body 41, is provided below the frame body 40. According to this method, invades such as insects and the like from outdoor can be removed easily from the net body 41 by the vibrating piece 42 even when the invaders adhere to the net body 41. whereby cleaning work is simplified and the ventilating performance of the ventilating fan will never be deteriorated. |
