Title:
SOUND ABSORPTION PANEL
Document Type and Number:
Japanese Patent JP2018204345
Kind Code:
A
Abstract:
To provide a sound absorption panel having excellent sound absorbing performance.SOLUTION: A sound absorption panel 1 comprises: a front plate 23 arranged on a sound source side and having a through-hole; a sound insulation plate arranged behind the front plate 23; and sound absorption means arranged between the sound insulation plate and the front plate 23. The sound absorption means is composed of a protective material, a first sound absorption material, a resistance material, and a second sound absorption material, arranged in order from the sound source side. The protective material, the first sound absorption material, the resistance material, and the second sound absorption material all have air permeability. The resistance material is located at the center in the longitudinal direction of the sound absorption means or to the rear of the center. The sound absorption panel 1 is configured so that the flow resistance of the resistance material is larger than the flow resistance of both the first sound absorption material and the second sound absorption material.SELECTED DRAWING: Figure 1
Inventors:
MIYAZAKI DAIGO
SUGIMOTO SHIZUKA
OKAZAKI RYOTARO
SUGIMOTO SHIZUKA
OKAZAKI RYOTARO
Application Number:
JP2017112160A
Publication Date:
December 27, 2018
Filing Date:
June 07, 2017
Export Citation:
Assignee:
SEKISUI JUSHI KK
International Classes:
E01F8/00; E04B1/86
Domestic Patent References:
| JP2001193022A | 2001-07-17 | |||
| JP2015139948A | 2015-08-03 |
Foreign References:
| WO2012102345A1 | 2012-08-02 | |||
| US20120103723A1 | 2012-05-03 |