| 摘要 |
<p>The device has a display support (7) which is made of paper or plastic material or textile and driven by rollers (3, 4). The support scrolls between the rollers and are attached to lateral vertical edges (8, 9) of the rollers. The support has a predetermined height (H) which is greater or equal to the distance (D) between axes of the rollers, where the ratio of the height to the distance is greater or equal to 1.</p> |
