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    Soundproof structure
    31.
    发明授权
    Soundproof structure 有权

    公开(公告)号：US11705099B2

    公开(公告)日：2023-07-18

    申请号：US16930103

    申请日：2020-07-15

    Applicant: FUJIFILM Corporation

    Inventor： Shinya Hakuta ,  Shogo Yamazoe

    IPC: G10K11/172

    CPC classification number: G10K11/172

    Abstract: Provided is a soundproof structure that is small and light and can reduce noise with a high natural frequency of a sound source at a plurality of frequencies at the same time.
    The soundproof structure according to the embodiment of the present invention includes a plurality of membrane-like members that are overlapped to be spaced from each other, a support that is made of a rigid body and supports each of the plurality of membrane-like members so as to perform membrane vibration, an inter-membrane space that is sandwiched between two adjacent membrane-like members among the plurality of membrane-like members, and a rear surface space that is formed between one membrane-like member at one end of the support in the support among the plurality of membrane-like members and the one end of the support, in which each of the plurality of membrane-like members absorbs a sound by performing the membrane vibration in a state where the one end of the support is closed.

    Soundproof structure
    32.
    发明授权
    Soundproof structure 有权

    公开(公告)号：US11551656B2

    公开(公告)日：2023-01-10

    申请号：US16851655

    申请日：2020-04-17

    Applicant: FUJIFILM Corporation

    Inventor： Shinya Hakuta ,  Takafumi Hosokawa ,  Shogo Yamazoe

    IPC: G10K11/172

    Abstract: Provided is a soundproof structure that is small and light and can sufficiently reduce noise with a high natural frequency of a sound source. There is provided a soundproof structure including a frame having an opening, and at least one membrane-like member fixed to an opening surface where the opening of the frame is formed, in which a rear surface space is formed to be surrounded by the frame and the membrane-like member, and a sound is absorbed due to vibration of the membrane-like member, and a sound absorption coefficient of the vibration of the membrane-like member at a frequency in at least one high-order vibration mode existing at frequencies of 1 kHz or higher is higher than a sound absorption coefficient at a frequency in a fundamental vibration mode.

    Soundproof structure, sound absorbing panel, and sound adjusting panel
    34.
    发明授权
    Soundproof structure, sound absorbing panel, and sound adjusting panel 有权

    公开(公告)号：US10988924B2

    公开(公告)日：2021-04-27

    申请号：US16583546

    申请日：2019-09-26

    Applicant: FUJIFILM Corporation

    Inventor： Shinya Hakuta ,  Shogo Yamazoe ,  Yuichi Kasuya

    IPC: E04B1/86 ,  B32B7/02 ,  B32B15/04 ,  G10K11/162 ,  G10K11/172

    Abstract: There are provided a soundproof structure, which can have high soundproofing performance in a wide frequency band and in which visual recognition of through-hole can be suppressed, and a sound absorbing panel and a sound adjusting panel using the soundproof structure. A sheet member having a plurality of through-holes passing therethrough in a thickness direction and a sound absorbing body disposed in contact with one main surface of the sheet member are provided. An average opening diameter of the through-holes is 0.1 μm or more and less than 100 μm. Assuming that the average opening diameter of the through-holes is ϕ (μm) and an average opening ratio is σ a parameter A expressed by A=σ×ϕ2 is 92 or less.

    Soundproof structure and soundproof system
    35.
    发明授权
    Soundproof structure and soundproof system 有权

    公开(公告)号：US10577791B2

    公开(公告)日：2020-03-03

    申请号：US16279300

    申请日：2019-02-19

    Applicant: FUJIFILM Corporation

    Inventor： Shinya Hakuta ,  Shogo Yamazoe ,  Akihiko Ohtsu

    IPC: E04B1/84 ,  E04B1/86 ,  G10K11/172 ,  F24F13/24

    Abstract: There is provided a soundproof structure having two or more soundproof units. Each soundproof unit has a frame having an opening portion and a sound absorbing member attached to the opening portion of the frame. Two adjacent soundproof units are disposed such that at least parts of the sound absorbing members face each other. The sound absorbing members at least parts of which face each other are spaced apart from each other. An average distance between the sound absorbing members at least parts of which face each other is less than 20 mm. Therefore, it is possible to provide a soundproof structure and a soundproof system that can soundproof low frequency side sound with a simple configuration, is small and lightweight, and can easily change its frequency characteristics.

    SOUNDPROOFING STRUCTURE, PARTITION STRUCTURE, WINDOW MEMBER, AND CAGE
    36.
    发明申请
    SOUNDPROOFING STRUCTURE, PARTITION STRUCTURE, WINDOW MEMBER, AND CAGE 审中-公开

    公开(公告)号：US20190017259A1

    公开(公告)日：2019-01-17

    申请号：US16119367

    申请日：2018-08-31

    Applicant: Fujifilm Corporation

    Inventor： Shinya Hakuta ,  Shogo Yamazoe ,  Hiroshi Komatsu

    IPC: E04B1/84

    Abstract: An object is to provide a soundproofing structure, a partition structure, a window member, and a cage which exhibit high soundproofing performance in a broad frequency band, can be miniaturized, can ensure ventilation properties, and have a light transmittance. Provided is a soundproofing structure including: a plate-like member which has a plurality of through-holes passing therethrough in a thickness direction; and a frame member which includes an opening portion, in which membrane vibration of the plate-like member is enabled by fixing the plate-like member to a peripheral edge of the opening portion of the frame member, an average opening diameter of the through-holes is in a range of 0.1 μm to 250 μm, and a first unique vibration frequency of the membrane vibration of the plate-like member is present in a range of 10 Hz to 100000 Hz.

    Blower with silencer
    40.
    发明授权
    Blower with silencer 有权

    公开(公告)号：US12006953B2

    公开(公告)日：2024-06-11

    申请号：US17886556

    申请日：2022-08-12

    Applicant: FUJIFILM Corporation

    Inventor： Shinya Hakuta ,  Shogo Yamazoe ,  Yoshihiro Sugawara ,  Akihiko Ohtsu

    IPC: F04D29/66 ,  F04D19/00 ,  F04D29/54

    CPC classification number: F04D29/665 ,  F04D19/002 ,  F04D29/542

    Abstract: An axial fan that includes a casing having an inner space that penetrates in one direction, and a rotor blade disposed in the inner space of the casing, and a silencer that is disposed at a position connected to the inner space of the axial fan are provided, in which the axial fan has a sound pressure distribution having a position at which a sound pressure is high and a position at which the sound pressure is low in a circumferential direction in the inner space during driving, and the silencer is disposed at the position of the axial fan in the circumferential direction at which the sound pressure is high and is not disposed at the position at which the sound pressure is low.

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