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1. (WO2019044589) SOUND PROOF STRUCTURE AND SOUND PROOF BODY
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Pub. No.: WO/2019/044589 International Application No.: PCT/JP2018/030805
Publication Date: 07.03.2019 International Filing Date: 21.08.2018
IPC:
G10K 11/16 (2006.01) ,G10K 11/162 (2006.01) ,G10K 11/168 (2006.01)
G PHYSICS
10
MUSICAL INSTRUMENTS; ACOUSTICS
K
SOUND-PRODUCING DEVICES;  METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
11
Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
16
Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
G PHYSICS
10
MUSICAL INSTRUMENTS; ACOUSTICS
K
SOUND-PRODUCING DEVICES;  METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
11
Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
16
Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
162
Selection of materials
G PHYSICS
10
MUSICAL INSTRUMENTS; ACOUSTICS
K
SOUND-PRODUCING DEVICES;  METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
11
Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
16
Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
162
Selection of materials
168
Plural layers of different materials, e.g. sandwiches
Applicants:
富士フイルム株式会社 FUJIFILM CORPORATION [JP/JP]; 東京都港区西麻布2丁目26番30号 26-30, Nishiazabu 2-chome, Minato-ku, Tokyo 1068620, JP
Inventors:
大津 暁彦 OHTSU Akihiko; JP
白田 真也 HAKUTA Shinya; JP
山添 昇吾 YAMAZOE Shogo; JP
菅原 美博 SUGAWARA Yoshihiro; JP
Agent:
渡辺 望稔 WATANABE Mochitoshi; JP
伊東 秀明 ITOH Hideaki; JP
三橋 史生 MITSUHASHI Fumio; JP
Priority Data:
2017-16366628.08.2017JP
Title (EN) SOUND PROOF STRUCTURE AND SOUND PROOF BODY
(FR) STRUCTURE ET CORPS INSONORISÉS
(JA) 防音構造、及び防音構造体
Abstract:
(EN) Provided is a sound proof structure having a film member with a plurality of thorough-holes passing through the film member in the thickness direction, wherein the acoustic impedance Z0 of the film member given in the formula (1) below satisfies the formula (2) below, and a pore-size distribution histogram satisfies the formula (3) below: (1) (2) (3) Where r0 represents a pore radius that maximizes an aperture ratio σ in a pore-size distribution histogram function σ(r), σsum represents the total aperture ratio for all the through-holes, and t represents the thickness of the film member. The sound proof structure allows sound to be absorbed at a higher absorption rate over a wide band.
(FR) L'invention concerne une structure insonorisée qui possède un élément de film ayant une pluralité de trous traversants passant à travers l'élément de film dans le sens de l'épaisseur, l'impédance acoustique Z0 de l'élément de film donnée dans la formule (1) ci-dessous satisfaisant la formule (2) ci-dessous, et un histogramme de distribution de tailles de pores satisfaisant la formule (3) ci-dessous : (1) (2) (3) où r0 représente un rayon de pore qui maximise un rapport d'ouverture σ dans une fonction d'histogramme de distribution de tailles de pores sigma σ(r), σsomme représente le rapport d'ouverture totale pour tous les trous traversants, et t représente l'épaisseur de l'élément de film. La structure insonorisée permet d'absorber le son à un taux d'absorption plus élevé sur une large bande.
(JA) この防音構造は、厚み方向に貫通する複数の貫通孔を有する膜状部材を備える防音構造であって、孔半径分布ヒストグラム関数σ(r)において、開口率σが最大となる孔半径をr、全貫通孔の合計開口率をσsum、膜状部材の厚みtとするときに、下記式(1)によって与えられる膜状部材の音響インピーダンスZ0が下記式(2)を満足し、かつ孔半径分布ヒストグラムが下記式(3)を満足する。  Re(Z)<2×Zair …(2)  この防音構造は、音を広帯域に高い吸収率で吸音することができる。
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)