# US 2019/0378489 A1 · Soundproof structure > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0378489 A1 - Document ID: US20190378489A1 - Status: Published application - Kind: A1 - Application number: 16/550,434 - Filed: 2019-08-26 - Published: 2019-12-12 - Earliest claimed: 2017-03-28 - Assignees: FUJIFILM Corporation - Applicants: FUJIFILM Corporation - Inventors: Masayuki NAYA; Shinya HAKUTA; Shogo YAMAZOE - Web page: https://patentgrep.com/patent/US20190378489A1 ## CPC - G10K 11/162: Selection of materials - G10K 11/172: using resonance effects - G10K 11/161: {in systems with fluid flow (G10K11/162 takes precedence; gas flow silencers or exhaust apparatus for machines or engines in general or for internal combustion engine F01N, noise absorbers in pipes or pipe systems F16L55/02; noise absorption in air conditioning and ventilation F24F13/24; silencing exhaust or propulsion jets in aircraft B64D33/06)} - G10K: SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR ## Abstract There is provided a soundproof structure that can not only have a peak of noise absorption at a specific frequency but also have a spread at the peak in order to suppress noise with a specific frequency. A soundproof cell includes a frame having a hole portion penetrating through both surfaces and at least one film fixed to at least one surface of the frame. The soundproof cell is disposed in an opening portion of a wall separating two spaces from each other in a state in which a surface of the film is inclined with respect to an opening cross section of the opening portion to provide a ventilation portion. All the surfaces of the at least one film are separated from the wall surface. A distance between the surface of the film on the side of the wall surface of the opening portion and the wall surface is 0.1 mm or more and is a distance set according to an absorption peak frequency at a spectral peak of soundproofing. ## Claims ### Claim 1 A soundproof structure, comprising: a soundproof cell including a frame having a hole portion penetrating through both opposite surfaces and at least one film fixed to at least one surface of the frame, wherein the soundproof cell is disposed in an opening portion of a wall separating two spaces from each other in a state in which a surface of the at least one film is inclined with respect to an opening cross section of the opening portion to provide a ventilation portion, a surface of a film on a side of a wall surface of the opening portion in the at least one film has a portion separated from the wall surface, and a distance between the surface of the film on the side of the wall surface of the opening portion and the wall surface is 0.1 mm or more and is a distance set according to an absorption peak frequency at a spectral peak of soundproofing. ### Claim 2 (depends on 1) The soundproof structure according to claim 1, wherein the distance between the surface of the film on the side of the wall surface of the opening portion and the wall surface is 20 mm or less. ### Claim 3 (depends on 1) The soundproof structure according to claim 1, wherein the at least one film is two films fixed to both surfaces of the frame. ### Claim 4 (depends on 2) The soundproof structure according to claim 2, wherein the at least one film is two films fixed to both surfaces of the frame. ### Claim 5 (depends on 1) The soundproof structure according to claim 1, wherein the absorption peak frequency decreases as the distance between the surface of the film on the side of the wall surface of the opening portion and the wall surface decreases. ### Claim 6 (depends on 2) The soundproof structure according to claim 2, wherein the absorption peak frequency decreases as the distance between the surface of the film on the side of the wall surface of the opening portion and the wall surface decreases. ### Claim 7 (depends on 3) The soundproof structure according to claim 3, wherein the absorption peak frequency decreases as the distance between the surface of the film on the side of the wall surface of the opening portion and the wall surface decreases. ### Claim 8 (depends on 4) The soundproof structure according to claim 4, wherein the absorption peak frequency decreases as the distance between the surface of the film on the side of the wall surface of the opening portion and the wall surface decreases. ### Claim 9 (depends on 1) The soundproof structure according to claim 1, wherein a spacer is provided between the surface of the film on the side of the wall surface of the opening portion and the wall surface, the soundproof cell is fixed to the wall surface through the spacer, and the spacer has a gap with at least one portion through which sound from an outside enters. ### Claim 10 (depends on 9) The soundproof structure according to claim 9, wherein the spacer is a plurality of columnar bodies. ### Claim 11 (depends on 9) The soundproof structure according to claim 9, wherein sound is incident from one opening end of the opening portion and propagates to exit from the other opening end, and the spacer is a plurality of plate-shaped bodies. ### Claim 12 (depends on 11) The soundproof structure according to claim 11, wherein the plate-shaped bodies are disposed so as to face an incidence direction of the sound. ### Claim 13 (depends on 11) The soundproof structure according to claim 11, wherein the plate-shaped bodies are disposed along an incidence direction of the sound. ### Claim 14 (depends on 9) The soundproof structure according to claim 9, wherein the spacer and the soundproof cell are formed as an integrated structure. ### Claim 15 (depends on 10) The soundproof structure according to claim 10, wherein the spacer and the soundproof cell are formed as an integrated structure. ### Claim 16 (depends on 11) The soundproof structure according to claim 11, wherein the spacer and the soundproof cell are formed as an integrated structure. ### Claim 17 (depends on 12) The soundproof structure according to claim 12, wherein the spacer and the soundproof cell are formed as an integrated structure. ### Claim 18 (depends on 13) The soundproof structure according to claim 13, wherein the spacer and the soundproof cell are formed as an integrated structure. ### Claim 19 (depends on 1) The soundproof structure according to claim 1, wherein the distance between the surface of the film on the side of the wall surface of the opening portion and the wall surface is adjustable. ### Claim 20 (depends on 1) The soundproof structure according to claim 1, wherein an angle between the surface of the film on the side of the wall surface of the opening portion and the wall surface is adjustable.