| 摘要 |
PURPOSE: Provided is a greenhouse skylight switch which can quickly ventilate the heat inside the greenhouse by opening the skylight and can automatically keep the opening state even in case of rain. CONSTITUTION: A greenhouse skylight switch is installed on the ceiling of the greenhouse. Four horizontal supports on the arch top of the greenhouse are fixed on vertical supports(a1-a6) on the arch top of the greenhouse at regular intervals. The horizontal supports(b3) among the horizontal supports are not covered with vinyl for ventilating heated air. The central horizontal supports(b3) are installed as a longer state than the others to prevent the inflow of the rain and form z-air current in wind. A rotary shaft mover(15) rotates a rotary shaft(9) to wind a rope(7) on the rotary shaft(9) for closing the skylight switch. |
