| 摘要 |
PURPOSE:To simplify the constitution of a hood of a ventilator and increase the rigidity of the hood. CONSTITUTION:A ventilation fan 3 is mounted inside a wall 1 of a building. A main frame 4 is attached on the outdoor side B of the wall 1, a shutter 5 is pivoted on the upper part of the main frame 4, and a driver 7 is mounted on the shutter 5. A protruding reinforcing plate 26 is attached to the main frame 4, and a wire 9, which is wound up and unwounded by the driver 7, is clamped on the reinforcing plate 26. A hood 12 is put on the main frame 4 and bolted on the reinforcing plate 26 with screws 27. |
