| 摘要 |
The screen, made from a stretch plastic, is displayed by rolling on and off upper (100) and lower (200) motorized and synchronized rollers while held under tension. The upper edge of the screen is connected to the top roller by a detachable fastening member and is attached to it by straps which allow the fastening member to be adjusted relative to the lower roller for fastening and dismantling. The upper edge of the screen is connected to the top roller by a detachable fastening member (110) which fits into a slot (140) in the upper roller and is attached to it by straps (400) which allow the fastening member to be adjusted relative to the lower roller for fastening and dismantling. The straps fit into grooves (131) in the upper roller so that they do not increase the roller's diameter when rolled onto it, and lateral guides (500, 501) keep the sides of the screen under tension.
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