| 摘要 |
PROBLEM TO BE SOLVED: To provide a sound diffusion panel capable of providing feeling of sound spread and stereoscopic effect despite a simple configuration.SOLUTION: A plurality of toric grooves are formed along a central line in a lateral direction of a lower base 1, and a plurality of semi-cylindrical members (4a-4f and 5a-5e) with same length are fittedly erected from the plurality of toric grooves respectively. The upper ends of the respective semi-cylindrical members are fitted in the lower face of an upper base 2. The plurality of semi-cylindrical members includes the semi-cylindrical members (4a-4f) and the semi-cylindrical members (5a-5e) that are alternately erected, the members (4a-4f) being fitted in the lower base 1 such that semi-arcuate swelling portions in plan view face the rear side and the members (5a-5e) being fitted in the lower base 1 such that the semi-arcuate swelling portions face the front side. The semi-cylindrical members erected adjacent to each other have overlapped portions in the vertical direction. |
