| 摘要 |
PURPOSE: An apparatus which makes water drops flow out along a greenhouse is provided to open and close ventilation window in a narrow space and cheaply and easily install. CONSTITUTION: An apparatus for ventilation in a greenhouse comprises: a window body which is formed by covering vinyl on a frame through connection of arc-shaped transverse frame(12) and longitudinal frame(11); an opening and closing frame(2) which is opened and closed by lifting and lowering the window body; and a driving device(3) which lifts and lowers a lifting frame. |
