公开(公告)号：US10531170B2

公开(公告)日：2020-01-07

申请号：US16310500

申请日：2017-08-23

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yoshimichi Kajihara ,  Takuji Miyamoto ,  Yuuki Izumi ,  Satoshi Koura

IPC: H04R1/02 ,  H04R9/06 ,  H04R9/02 ,  H04R7/16

Abstract: A loudspeaker device includes a loudspeaker, a box, and a lid. The box is provided with an opening and accommodates the loudspeaker. The lid covers the opening of the box. The lid includes a grille with one or more hexagonal holes each having an opening area equal to the area of a circle with a diameter in a range from 6.0 mm to 9.0 mm, inclusive.

公开(公告)号：US11153689B2

公开(公告)日：2021-10-19

申请号：US16841253

申请日：2020-04-06

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Takuji Miyamoto ,  Kengo Takeda ,  Kazuma Fujioka

IPC: H04R9/02 ,  H04R31/00 ,  H04R7/26

Abstract: A loudspeaker including a magnetic circuit; a voice coil body; a diaphragm attached to the voice coil body; a housing which accommodates the magnetic circuit and the voice coil body and to which an outer circumferential portion of the diaphragm and the magnetic circuit are attached; two connection terminals disposed exposed inside and outside the housing; and signal wires which extend from the voice coil body and are connected to the connection terminals. Each signal wire is outwardly curved to be away from a virtual straight line connecting the proximal end of the signal wire and the connection portion. The distal end of the signal wire projects from the connection portion toward the voice coil body.