| 摘要 |
<p>PROBLEM TO BE SOLVED: To make almost all people able to simultaneously look at a display surface by turning it to a horizontal posture while the person on a back side can not view it when it is in a vertical posture in a conference or the like where many people gather. SOLUTION: In order to change a display or the like from a vertical screen to a screen close to horizontal and make many people able to simultaneously view the same screen, a first shaft 3 is non-rotatably inserted between the supporting holes 2 of a bracket 1, the first bearing part 4a of an arm 4 is rotatably fitted to the first shaft 3, a second shaft 8 is non-rotatably inserted between the supporting holes 7 of the attaching metal fitting 6 of the display 5 and the second bearing part 4b of the arm 4 is rotatably fitted to the second shaft 8. A large gear 9 is fitted and fixed to the first shaft 3 at the outer side position of the bracket 1 and a small gear 10 is fitted and fixed to the second shaft 8 at the outer side position of the supporting hole 7 of the attaching metal fitting 6 respectively. An endless toothed belt 11 is wound between the large gear 9 and the small gear 10 and the display 5 held in a vertical state is turned to an almost horizontal state by the displacement of the toothed belt 11 when the side of the first bearing part 4a of the arm 4 has been turned in a lowering direction.</p> |
