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Patent Searching and Data


Title:
SOUND-PROOFING BOX
Document Type and Number:
WIPO Patent Application WO/2019/138969
Kind Code:
A1
Abstract:
This sound-proofing box has a plurality of sound-proofing walls each having a sound-proofing structure having: a honeycomb core; a first surface plate and a second surface plate which sandwich the honeycomb core; and through-holes perforated in the first surface plate, wherein the plurality of sound-proofing walls has two or more types of sound-proofing walls having different frequency characteristics from each other. This sound-proofing box is thin and lightweight, and is capable of achieving high stiffness and broadband sound-proofing.

Inventors:
YAMAZOE SHOGO (JP)
HAKUTA SHINYA (JP)
Application Number:
JP2019/000088
Publication Date:
July 18, 2019
Filing Date:
January 07, 2019
Export Citation:
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Assignee:
FUJIFILM CORP (JP)
International Classes:
G10K11/16; B32B3/12; E04B1/86; G10K11/162; G10K11/172
Foreign References:
JP2010191029A2010-09-02
JPS6314300U1988-01-29
JP2017151256A2017-08-31
US6182787B12001-02-06
JP2012013912A2012-01-19
JP2016200695A2016-12-01
Attorney, Agent or Firm:
ITOH Hideaki et al. (JP)
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