| 摘要 |
PURPOSE: A pull up and pull down type roll screen is provided to partially block sunlight by pulling the roll screen in up and down both direction. CONSTITUTION: A fixing device of a roll screen locates an upper shaft on wind frame top and a lower shaft on window frame bottom. The wire, as much as the roll screen length, is respectively attached to the roll screen of the lower shaft and upper shaft. A rolling steering wheel pulls the roll screen up and down. |
