SOUNDPROOFING PLATE WHICH DOES NOT OBSTRUCT AIRFLOW

Title:

SOUNDPROOFING PLATE WHICH DOES NOT OBSTRUCT AIRFLOW

Document Type and Number:

WIPO Patent Application WO/2012/086680

Kind Code:

A1

Abstract:

Provided is a soundproofing plate, comprising: a substrate wherein a plurality of through holes are formed; and sound collecting parts, further comprising through holes in the center thereof, which approximately match the through holes of the substrate, said collecting parts having a shape wherein the diameter increases as the distance from the substrate increases. The sound collecting parts are disposed on both faces of the substrate. Or, provided is a soundproofing plate, comprising: a substrate wherein a plurality of through holes are formed; and attenuation elements. The attenuation elements further comprise: hollow shaft members; and sound collecting parts which are anchored on the end parts of the hollow shaft members. The sound collecting parts: further comprise through holes in the centers thereof which approximately match hollow parts in the hollow shaft members; and have a shape wherein the diameter increases as the distance from the hollow shaft member increases. The hollow shaft members are disposed in the substrate so as to approximately match the through holes in the substrate.

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Inventors:

KITAMURA YOSHIHARU (JP)

Application Number:

PCT/JP2011/079623

Publication Date:

June 28, 2012

Filing Date:

December 21, 2011

Export Citation:

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Assignee:

KITAMURA YOSHIHARU (JP)

International Classes:

G10K11/172; E06B5/20

Foreign References:

JPS63153592A	1988-06-25
JPH03192897A	1991-08-22
JP2005221710A	2005-08-18

Other References: