Title:
SOUND PROOF WALL FACILITY
Document Type and Number:
Japanese Patent JP2020063655
Kind Code:
A
Abstract:
To provide a sound proof wall facility capable of providing a soundproofing effect different from some conventional measures by providing a new sound reduction device on the sound proof wall.SOLUTION: A sound proof wall facility comprises: a sound proof wall 1A provided with a sound absorbing material 4 inside thereof and a sound insulating surface without any hole; and a sound reduction device 1C provided on a sound source side of the sound proof wall 1A. The sound reduction device 1C has an opening 25 on the sound source side of the sound proof wall 1A and a plurality of blade members spread in the width direction of the sound proof wall 1A at appropriate intervals in the vertical direction. The noise reduction device 1C may further be provided with sheets or panels of an air-permeable material 30 each provided on the tip end side of the blade member so as to cover a groove between the blade members. In addition, a sound absorbing panel which allows sound transmission from the sound source side to the back side and has a sound absorbing material may be provided on the sound proof wall 1A.SELECTED DRAWING: Figure 2
Inventors:
KIYAMA MASAKAZU
TOMINAGA DAISUKE
KUMAGAI NAOTO
KIMOTO SHOGO
HOSHINO YASUSHI
ARAKI KUNIHIKO
TOMINAGA DAISUKE
KUMAGAI NAOTO
KIMOTO SHOGO
HOSHINO YASUSHI
ARAKI KUNIHIKO
Application Number:
JP2019187878A
Publication Date:
April 23, 2020
Filing Date:
October 11, 2019
Export Citation:
Assignee:
NIHON KANKYO AMENITY CO LTD
ACOUSTICS DESIGN RES INSTITUTE CO LTD
ACOUSTICS DESIGN RES INSTITUTE CO LTD
International Classes:
E01F8/00; E01B19/00; E04B1/82; E04B1/86
Attorney, Agent or Firm:
Koji Kitamura
Toshio Takao
Toshio Takao