| 摘要 |
PROBLEM TO BE SOLVED: To provide an acoustic absorption panel fitted on a rear surface of an elevated road and a scaffold board that prevent parts from falling down, in comparison with the conventional part.SOLUTION: An acoustic absorption panel includes a front surface plate member 28 that includes an exposed front surface plate 32, and a rear surface plate member 30 that includes a rear surface plate 46 facing the front surface plate 32. A pair of side surface plates 34A, 34B, 48A, 48B that face each other are installed on the front surface plate member 28 and the rear surface plate member 30, respectively. An inner hook part 52 bent toward inside of the front surface plate 32 or an outer hook part 44 bent toward outside thereof is formed on the pair of side surface plates 34A, 34B of the front surface plate member 28. An outer hook part 44 corresponding to the inner hook part 52 of the front surface plate member 28, or an inner hook part 52 corresponding to the outer hook part 44, is formed on the pair of side surface plates 48A, 48B of the rear surface plate member 30. The side surface plates 34A, 34B, 48A, 48B of the front surface plate member 28 and the rear surface plate member 30 are overlapped so that the inner hook part 52 and the outer hook part 44 are engaged, and thus, the front surface plate member 28 is hung by the rear surface plate member 30.SELECTED DRAWING: Figure 14 |
