公开(公告)号：US20150002928A1

公开(公告)日：2015-01-01

申请号：US14486324

申请日：2014-09-15

Applicant: FUJIFILM Corporation

Inventor： Naoharu KIYOTO ,  Katsuhisa OHZEKI ,  Shinya HAKUTA

IPC: G02B5/20 ,  G02B5/26

CPC classification number: G02B5/208 ,  C03C17/007 ,  C03C2217/445 ,  C03C2217/479 ,  C03C2218/11 ,  G02B5/206 ,  G02B5/26

Abstract: An infrared ray shielding film having a metal particle-containing layer in which hexagonal to circular tabular metal particles are contained in 60% by number or more relative to total number of the metal particles contained in the metal particle-containing layer exhibits excellent infrared ray reflection at a wide range of from 800 nm to 2000 nm and shows little heat ray absorption.

Abstract translation: 具有含金属颗粒的层的红外线屏蔽膜相对于含有金属粒子层的金属粒子的总数而含有60个数量以上的六方形状的圆形状的扁平状金属粒子，显示出优异的红外线反射 在800nm至2000nm的宽范围内，并且几乎没有热射线吸收。

公开(公告)号：US20240393001A1

公开(公告)日：2024-11-28

申请号：US18798340

申请日：2024-08-08

Applicant: FUJIFILM Corporation

Inventor： Shogo YAMAZOE ,  Tomohiro TAKAHASHI ,  Shinya HAKUTA ,  Yuichiro ITAI ,  Yoshihiro SUGAWARA

IPC: F24F13/02 ,  E04F17/04 ,  F24F13/24

Abstract: There is provided a wind duct with a silencer that can efficiently reduce sound propagated to a blowing target including noise generated in a wind duct during blowing.
The wind duct with a silencer of the present invention includes the wind duct that is connected to a blowing source and a silencer that reduces sound released from an exit of the wind duct. The silencer is disposed at a position closer to the exit among the blowing source and the exit, and a frequency of a primary silencing peak of the silencer is within a frequency band of sound generated in the wind duct due to blowing in the wind duct.

公开(公告)号：US20240255178A1

公开(公告)日：2024-08-01

申请号：US18632651

申请日：2024-04-11

Applicant: FUJIFILM Corporation

Inventor： Yuichiro ITAI ,  Yoshihiro SUGAWARA ,  Shogo YAMAZOE ,  Shinya HAKUTA ,  Tomohiro TAKAHASHI

IPC: F24F13/02

CPC classification number: F24F13/0263

Abstract: Provided is an air passage type silencer that can drain water from the inside of an expansion portion and that can suppress generation of a wind noise. An air passage type silencer includes an inlet-side ventilation pipe, an expansion portion that communicates with the inlet-side ventilation pipe and of which a cross-sectional area is larger than a cross-sectional area of the inlet-side ventilation pipe, an outlet-side ventilation pipe that communicates with the expansion portion and of which a cross-sectional area is smaller than a cross-sectional area of the expansion portion, an opening portion structure that is provided at at least one of a connection portion between the expansion portion and the inlet-side ventilation pipe or a connection portion between the expansion portion and the outlet-side ventilation pipe and of which a cross-sectional area gradually increases from the connection portion toward an inside of the expansion portion, and a sound absorbing material that is disposed at least between an inner peripheral surface of the expansion portion and a distal end of the opening portion structure. The opening portion structure includes a cutout portion formed from the distal end to a root side at a portion of a peripheral surface, and a width of the cutout portion gradually increases from the root side toward the distal end.

公开(公告)号：US20240183569A1

公开(公告)日：2024-06-06

申请号：US18439877

申请日：2024-02-13

Applicant: FUJIFILM Corporation

Inventor： Yoshihiro SUGAWARA ,  Shogo YAMAZOE ,  Shinya HAKUTA ,  Yuichiro ITAI ,  Tomohiro TAKAHASHI

IPC: F24F13/02 ,  F24F13/24

CPC classification number: F24F13/0209 ,  F24F2013/242

Abstract: To provide an air passage type silencer that can suppress generation of a wind noise, that has a high sound attenuation effect in a low-frequency band, and that has high air passage performance. The air passage type silencer includes an inlet-side ventilation pipe, an expansion portion that communicates with the inlet-side ventilation pipe and of which a cross-sectional area is larger than a cross-sectional area of the inlet-side ventilation pipe, an outlet-side ventilation pipe that communicates with the expansion portion and of which a cross-sectional area is smaller than a cross-sectional area of the expansion portion, an opening portion structure of which a cross-sectional area gradually decreases from an inside of the expansion portion toward a connection portion between the expansion portion and the outlet-side ventilation pipe, a rear surface space that is surrounded by the opening portion structure, a side surface of the expansion portion that is on an outlet-side ventilation pipe side, and a peripheral surface of the expansion portion, and a porous sound absorbing material that is disposed at least in an opening portion of the rear surface space.

公开(公告)号：US20220010813A1

公开(公告)日：2022-01-13

申请号：US17487189

申请日：2021-09-28

Applicant: FUJIFILM Corporation

Inventor： Yoshihiro SUGAWARA ,  Shinya HAKUTA ,  Akihiko OHTSU ,  Shogo YAMAZOE

IPC: F04D29/66 ,  H02K7/00 ,  H02K7/14 ,  H02K5/04 ,  F04D19/00 ,  F04D29/52

Abstract: A blower with a silencer has the blower including an axial fan including a casing, a motor attached to the casing, and a rotor having a shaft portion attached to the motor and rotated and a blade formed to protrude to an outer side of the shaft portion in a radial direction, and a silencer attached to the casing, in which the silencer includes a resonator that selectively silences a dominant sound generated by the axial fan, the silencer is disposed at a position in which at least a part of the silencer overlaps with the shaft portion, as viewed from a rotation axis direction of the rotor, and in a case in which, in a cross section perpendicular to a rotation axis of the rotor, a circle around the rotation axis, which has a radius of a line connecting the rotation axis and a point of a most distal end of the blade, is defined as a rotation region, an area of the silencer in the cross section perpendicular to the rotation axis is smaller than an area of the rotation region.

公开(公告)号：US20210331630A1

公开(公告)日：2021-10-28

申请号：US17371639

申请日：2021-07-09

Applicant: FUJIFILM Corporation

Inventor： Shinya HAKUTA ,  Takafumi HOSOKAWA ,  Shogo YAMAZOE

IPC: B60R13/08 ,  G10K11/172

Abstract: Provided is a silencing member for an electrified vehicle, which can suitably reduce a narrow band sound generated by a motor or the like, can handle a plurality of frequencies, can prevent generation of a wind noise, and can be miniaturized and thinned. The silencing member for an electrified vehicle includes a film type resonance structure which silences a sound generated from a sound source which is disposed in an electrified vehicle, in which the sound source generates a narrow band sound, the film type resonance structure is disposed in the same space as the sound source or in a vehicle cabin of the electrified vehicle, the film type resonance structure includes at least one film-like member, a frame which supports the film-like member to allow vibration thereof, and a back plate which is installed in the frame to face the film-like member, the film-like member, the frame, and the back plate form a back space surrounded by the film-like member, the frame, and the back plate, and the sound generated from the sound source is silenced by film vibration due to the film-like member of the film type resonance structure.

公开(公告)号：US20210164691A1

公开(公告)日：2021-06-03

申请号：US17175445

申请日：2021-02-12

Applicant: FUJIFILM Corporation

Inventor： Yoshihiro SUGAWARA ,  Shogo YAMAZOE ,  Shinya HAKUTA ,  Akihiko OHTSU ,  Kazuhiro OKI

IPC: F24F13/24 ,  F24F13/02 ,  E04B1/86 ,  G10K11/172

Abstract: An object is to provide a silencing system that includes a silencer disposed in a ventilation sleeve, can suppress the generation of negative pressure in the interior, and can prevent a door or the like of an interior entrance from being difficult to open. The silencing system includes one or more silencers that are disposed in a ventilation sleeve provided to penetrate a wall separating two spaces, and “αA>10C−(0.1/P)×TL” is satisfied in a case where a gap equivalent area of the ventilation sleeve in which the silencer is installed is denoted by αA and a normalized sound transmission loss in an octave band in which a first resonant frequency of the ventilation sleeve is present is denoted by TL.
C denotes a constant determined by a measurement system in a case where there is no silencer and P denotes a transmission efficiency coefficient.

公开(公告)号：US20210164690A1

公开(公告)日：2021-06-03

申请号：US17174435

申请日：2021-02-12

Applicant: FUJIFILM Corporation

Inventor： Yoshihiro SUGAWARA ,  Shogo YAMAZOE ,  Shinya HAKUTA ,  Akihiko OHTSU ,  Kazuhiro OKI

IPC: F24F13/24 ,  G10K11/162 ,  G10K11/172 ,  E04B1/82

Abstract: An object is to provide a silencing system that can achieve both high ventilation performance and high soundproof performance, can silence a plurality of pieces of resonant sound, and has high general-purpose properties since the silencing system does not need to be designed according to a tubular member. The silencing system includes one or more silencers that are disposed in a tubular member provided to penetrate a wall separating two spaces, and satisfies “0 0” in a case where a standardized effective modulus of elasticity in an interior space of the tubular member in which the silencers are disposed is denoted by Bn.

公开(公告)号：US20200349915A1

公开(公告)日：2020-11-05

申请号：US16930103

申请日：2020-07-15

Applicant: FUJIFILM Corporation

Inventor： Shinya HAKUTA ,  Shogo YAMAZOE

IPC: 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.

公开(公告)号：US20200224810A1

公开(公告)日：2020-07-16

申请号：US16829999

申请日：2020-03-25

Applicant: FUJIFILM Corporation

Inventor： Shinya HAKUTA ,  Shogo YAMAZOE ,  Akihiko OHTSU ,  Yoshihiro SUGAWARA

IPC: F16L55/033 ,  G10K11/162 ,  G10K11/172

Abstract: Provided is a silencing tubular structure body that has high strength and can be disposed in a narrow space. A tubular member including a tubular portion having a tubular shape, and a frame portion having at least a part formed integrally with an inner peripheral surface side of the tubular portion; and a lid member that is exchangeably disposed on an opening surface of the frame portion of the tubular member are included, in which the frame portion and the lid member form a resonant silencing structure.