Title:
SOUNDPROOF BOARD NOT IMPEDING AIR FLOW
Document Type and Number:
Japanese Patent JP2016031483
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a soundproof board not consuming artificial energy, and enabling circulation with the outside air.SOLUTION: A soundproof board 1 includes a substrate 2 having a plurality of open holes 4a formed therethrough, and a hollow shaft member 3 provided on the substrate 2 so that its axis agrees with the open hole 4a. In the soundproof board 1 not impeding an air flow, the hollow shaft member 3 is provided protrusively from the substrate 2, and the shaft length of the hollow shaft member 3 is within a range from 10 mm to 70 mm.SELECTED DRAWING: Figure 1
Inventors:
KITAMURA ZENJI
Application Number:
JP2014154455A
Publication Date:
March 07, 2016
Filing Date:
July 30, 2014
Export Citation:
Assignee:
KITAMURA ZENJI
International Classes:
G10K11/16
Domestic Patent References:
| JPS62127597U | 1987-08-13 | |||
| JP2013008012A | 2013-01-10 | |||
| JPS63237097A | 1988-10-03 | |||
| JPH0823753B2 | 1996-03-06 |
Attorney, Agent or Firm:
Sonoda Yoshitaka
Kobayashi Yoshinori
Kobayashi Yoshinori