Akustische Vorrichtung

Details

Veröffentlichungs-Nr.

EP4734545

Anmeldetag

17. Oktober 2025

Veröffentlichung

29. April 2026

Rechtsraum

EP

IPC

(XIAO BO et al.)

Abstract

An acoustic device includes a box and a speaker unit accommodated in an internal space of the box, wherein the box includes a front wall having an opening and a rear wall facing the front wall, the speaker unit includes a frame, a diaphragm supported on the frame so as to be capable of vibrating, a voice coil configured to vibrate together with the diaphragm, and a magnetic circuit configured to apply a magnetic field to the voice coil, the magnetic circuit includes a magnet and a yoke made of a magnetic material, a magnetic gap in which the voice coil is disposed is formed in a part of the yoke, the opening is configured to allow sound pressure emitted from the diaphragm to be released to an external space, and a part of the yoke is disposed within the rear wall.

Anmelder

Firma

Alps Alpine Co., Ltd.

Land

🇯🇵 Japan