公开(公告)号：US20250071456A1

公开(公告)日：2025-02-27

申请号：US18938609

申请日：2024-11-06

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Minami NAKA ,  Shuji SAIKI ,  Akihisa KAWAMURA ,  Satoshi TAKAYAMA

IPC: H04R1/02

Abstract: A loudspeaker device includes: a loudspeaker unit; and a casing that defines an internal space in which the loudspeaker unit is housed. The casing includes a baffle board to which the loudspeaker unit is fixed in an orientation that exposes a diaphragm of the loudspeaker unit. The baffle board includes one or more through-holes that establish communication between an external space outside of the casing and the internal space. Sound that is emitted from the one or more through-holes has a wavelength with an inverted phase relative to sound emitted directly from the diaphragm to the external space.

公开(公告)号：US20250056155A1

公开(公告)日：2025-02-13

申请号：US18930071

申请日：2024-10-29

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kota NAKAHASHI ,  Shuji SAIKI ,  Akihisa KAWAMURA ,  Satoshi TAKAYAMA

IPC: H04R1/34

Abstract: An acoustic lens includes: a plurality of first partition plates aligned apart from each other in the traveling direction of sound waves to be emitted from a loudspeaker. Each of the plurality of first partition plates includes holes through which the sound waves pass. The lengths of the plurality of first partition plates in a first direction are mutually different.

公开(公告)号：US20220248114A1

公开(公告)日：2022-08-04

申请号：US17728329

申请日：2022-04-25

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Akihisa KAWAMURA ,  Shuji SAIKI ,  Satoshi TAKAYAMA

IPC: H04R1/02

Abstract: A building material facing a first space includes a structure which is in a plate form and includes at least one opening; a first loudspeaker disposed in a second space across the structure from the first space, in a position opposite to a corresponding one of the at least one opening; and a three-dimensional netlike structure disposed between the structure and the first loudspeaker and configured with a fibrous member three-dimensionally intertwined.

公开(公告)号：US20250063297A1

公开(公告)日：2025-02-20

申请号：US18934815

申请日：2024-11-01

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kota NAKAHASHI ,  Shuji SAIKI ,  Akihisa KAWAMURA ,  Satoshi TAKAYAMA

IPC: H04R1/34 ,  G10K11/30

Abstract: An acoustic lens includes an opening and a plurality of partition plates. A sound wave to be emitted from a loudspeaker is input to the opening. The plurality of partition plates form a plurality of sound paths through which the sound wave input to the opening passes. The plurality of partition plates include a first control mechanism and a second control mechanism. The first control mechanism controls directivity, in a first direction, of the sound wave that has passed through the plurality of sound paths and is output to outside. The second control mechanism controls directivity, in a second direction intersecting the first direction, of the sound wave that has passed through the plurality of sound paths and is output to outside.

公开(公告)号：US20230048436A1

公开(公告)日：2023-02-16

申请号：US17794167

申请日：2021-06-16

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Tetsuji SADOSHIMA ,  Shuji SAIKI

IPC: H04R1/10 ,  H04R1/28

Abstract: An earphone according to the present disclosure includes: a speaker unit that generates a sound wave; a case having one end and the other end opposite to the one end and housing the speaker unit; and a sound conduit connected to the one end side of the case and provided with a sound hole that emits the sound wave generated from the speaker unit, in which an internal space connected to the sound hole is provided between the speaker unit and the sound conduit in the case, and the case is provided with a plurality of vent holes that communicate the internal space with an external space that is outside the case.