| 摘要 |
The present invention relates to an acoustic banner comprising: a film-shaped sound absorbing material; multiple frames arranged in a row at regular distances, and having one sides which are longitudinally formed and are attached with the sound absorbing material; slide parts having through-holes, respectively installed at the frames, and sliding in the longitudinal directions of the frames; a strap member passing through the through-holes formed at the slide parts and wound with rotation; a fixed part installed at one end of the strap member passing through the through-hole of the slide part placed at the bottom among the slide parts, and fixed to the frame at which the slide part placed at the bottom among the slide parts is installed; and a winding roller installed at the other end of the strap member and winding the strap member. |
