Title:
SOUNDPROOF STRUCTURE, SOUND ABSORPTION PANEL, AND TUNING PANEL
Document Type and Number:
WIPO Patent Application WO/2018/181139
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a soundproof structure that is capable of exhibiting high soundproof performance in a wide frequency bandwidth and inhibiting a through-hole from being viewed, and a sound absorption panel and a tuning panel that use the soundproof structure. This soundproof structure has: a sheet member that has a plurality of through-holes penetrating in the thickness direction; and a sound absorption body that is arranged in contact with one main surface of the sheet member, wherein the average opening diameter of the through-holes is 0.1 µm-100 µm, and a parameter A represented by A=σ×Φ2 is 92 or lower, when Φ (µm) represents the average opening diameter of through-holes and σ represents the average numerical aperture rate.
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Inventors:
HAKUTA SHINYA (JP)
YAMAZOE SHOGO (JP)
KASUYA YUICHI (JP)
YAMAZOE SHOGO (JP)
KASUYA YUICHI (JP)
Application Number:
PCT/JP2018/012057
Publication Date:
October 04, 2018
Filing Date:
March 26, 2018
Export Citation:
Assignee:
FUJIFILM CORP (JP)
International Classes:
G10K11/16; B32B3/24; B32B15/14; G10K11/162
Domestic Patent References:
| WO2015046079A1 | 2015-04-02 | |||
| WO2016060037A1 | 2016-04-21 | |||
| WO2014141867A1 | 2014-09-18 | |||
| WO2016017380A1 | 2016-02-04 |
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Other References:
R. P. DOOLEYR. SHAW: "Noise Perceptionin Electrophotography", J. APPL. PHOTOGR. ENG., vol. 5, no. 4, 1979, pages 190 - 196
DAH-YOU MAA: "Potential of microperforated panel absorber", THE JOURNAL OF ACOUSTIC SOCIETY OF AMERICA, vol. 104, 1998, pages 2861, XP012000639, doi:10.1121/1.423870
DAVID T. BLACKSTOCK: "fundamentals of physical acoustics", 2000, JOHN WILEY & SONS
See also references of EP 3605525A4
DAH-YOU MAA: "Potential of microperforated panel absorber", THE JOURNAL OF ACOUSTIC SOCIETY OF AMERICA, vol. 104, 1998, pages 2861, XP012000639, doi:10.1121/1.423870
DAVID T. BLACKSTOCK: "fundamentals of physical acoustics", 2000, JOHN WILEY & SONS
See also references of EP 3605525A4
Attorney, Agent or Firm:
WATANABE Mochitoshi et al. (JP)
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