公开(公告)号：US12149905B2

公开(公告)日：2024-11-19

申请号：US17914203

申请日：2021-10-07

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Junichi Ikeda ,  Shinichiro Kurihara

IPC: H04R7/04 ,  H04R1/02

Abstract: A speaker device includes: a main body part mounted at a predetermined position; a first actuator that is housed in the main body part and generates vibration corresponding to an audio signal that is input; a vibrating body; and vibration transmitting member. The vibrating body vibrates with vibration transmitted from the outside to generate sound. The vibration transmitting member is a string-shaped or rod-shaped member that transmits the vibration generated by the first actuator to the vibrating body. The vibrating body is placed for hanging from the first actuator by the vibration transmitting member.

公开(公告)号：US12015895B2

公开(公告)日：2024-06-18

申请号：US17919715

申请日：2021-10-15

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kazuki Honda ,  Masashi Nishida ,  Junichi Ikeda ,  Ippei Kiyama

IPC: H04R1/38 ,  H04R7/12

CPC classification number: H04R1/38 ,  H04R7/127 ,  H04R2201/34

Abstract: A speaker includes: a diaphragm having a dome shape; a tubular member having the diaphragm disposed inside, and having an inner diameter increasing toward a front; and a phase plug. The phase plug includes: a front surface, a rear surface facing a central portion on a front surface of the diaphragm at a constant interval in parallel, and a side surface connecting the front surface and the rear surface. A front surface of the phase plug is larger than a rear surface of the phase plug as viewed in a front-rear direction of a speaker. At least a part of a side surface of the phase plug has an inclined surface extending outward while extending forward, faces an inner circumferential surface of the tubular member and a front surface of the diaphragm, and directs a sound wave generated from the diaphragm toward an inner circumferential surface of the tubular member.