| 摘要 |
<p>A display device comprises a plurality of frames each comprising two uprights (80) and two cross members (82), bounding a rectangular space in which a rectangular flexible sheet is supported in tension by tensioning devices (120) displaced in the corners of the frame. Laterally adjoining frames are pivotally connected together by links (20) and engage one another via masking gear segments (200) mounted on the tensioning devices (120). Vertically superimposed frames are connected together by connectors (230, 231, 236) each connecting, end to end, the lower end of one upright (80) of an upper frame and the axially aligned upper end of a lower frame. Each connector comprises an upper peg (230), a lower peg (231) and an axially slidable and rotatable sleeve (236) captive on the upper peg (230) and capable of being screwed down over the lower peg (231).</p> |
