| 摘要 |
The invention concerns a foldable projection cover with a frame which involves two U-shaped end-frame parts (10) which each consist of an end-piece (11) and two side-pieces (12), and two intermediary side-pieces, between the end-frame parts' side-pieces, which are secured as upward side-frame pieces (29). At one of its ends, the screen (19) is secured in one of the end-frames' end-pieces, which retains a rotational roller element (18) and at its other end, in a band (23) at the other end-frame's end-piece which is spring-loaded for stretching the screen.<IMAGE> |
