公开(公告)号：US20190289402A1

公开(公告)日：2019-09-19

申请号：US16433480

申请日：2019-06-06

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Senri NAKAMOTO ,  Yukiharu WAKIGUCHI ,  Katsuhiko KOTSUGI ,  Kazutaka GOTO

IPC: H04R9/06 ,  H04R7/22 ,  H04R9/02 ,  H04R1/00 ,  H04R7/20 ,  H04R1/34 ,  H04R1/02 ,  H04R9/04 ,  H04R9/00 ,  H04R7/18 ,  H04R1/06

Abstract: An electroacoustic transducer includes: a diaphragm; a frame that is disposed around the diaphragm so as to surround the diaphragm; an edge that closes a space between the diaphragm and the frame in a manner of forming a membrane so as to connect the diaphragm and the frame; a base body that supports the frame and has a through sound output hole in front of the diaphragm; a magnet that is attached to the frame; and a voice coil body that is attached to the diaphragm. The frame has an annular first fitting portion that is disposed around the diaphragm so as to surround the diaphragm. The base body has a second fitting portion that fits with the first fitting portion. The electroacoustic transducer further includes a sealing member that is made of a thermoplastic substance and seals a space between the first fitting portion and the second fitting portion fitted with each other.

公开(公告)号：US20230380089A1

公开(公告)日：2023-11-23

申请号：US18031100

申请日：2022-03-28

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kazuya HONDA ,  Tatsuro UENO ,  Senri NAKAMOTO

IPC: H05K5/02 ,  F16M11/22 ,  F16M11/42

CPC classification number: H05K5/0234 ,  F16M11/22 ,  F16M11/42 ,  F16M2200/08

Abstract: A display device includes a body that displays an image and a base that supports the body in a state where the base is placed on a floor surface. The base includes a plurality of casters that roll on the floor surface. The plurality of casters include at least one first caster and at least one second caster having a hardness lower than a hardness of the first caster.