# US 12,764,446 B2 · Vehicle electroacoustic transducer

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- Number: US 12,764,446 B2
- Document ID: US12764446B2
- Status: Granted
- Kind: B2
- Application number: 18/851,650
- Filed: 2023-03-06
- Published: 2025-06-26
- Granted: 2026-10-13
- Earliest claimed: 2022-03-29
- Assignees: Foster Electric Company, Limited
- Applicants: Foster Electric Company, Limited
- Inventors: Gaku Kubota; Atsushi Koga
- Web page: https://patentgrep.com/patent/US12764446B2

## CPC

- H04R 1/025: {Arrangements for fixing loudspeaker transducers, e.g. in a box, furniture}
- B60Q 5/00: Arrangement or adaptation of acoustic signal devices
- H04R 2499/13: Acoustic transducers and sound field adaptation in vehicles
- H04R: LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS (producing sounds with frequency not determined by supply frequency G10K)
- B60Q: ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL

## Abstract

A vehicle electroacoustic transducer includes: a speaker unit that generates sound; a case that is formed in a box shape and that houses the speaker unit; and an attachment portion that is formed at the case and that is attachable, by a fastener, to a member to be attached which is outside a vehicle cabin, wherein: the attachment portion includes an attachment metal fitting into which the fastener is screwed, and a metal fitting housing portion that houses the attachment metal fitting, and a drain hole for draining water is formed at the metal fitting housing portion.

## Claims

### Claim 1

A vehicle electroacoustic transducer, comprising:
a speaker unit that generates sound;
a case that is formed in a box shape and that houses the speaker unit; and
an attachment portion that is formed at the case and that is attachable, by a fastener, to a member to be attached which is outside a vehicle cabin, wherein:
the attachment portion includes an attachment metal fitting into which the fastener is screwed, and a metal fitting housing portion that houses the attachment metal fitting,
a drain hole for draining water is formed at the metal fitting housing portion,
an insertion hole, into which the attachment metal fitting is insertable, is formed in the metal fitting housing portion; and
the drain hole is formed in a side of the metal fitting housing portion which is opposite an insertion hole opening.

### Claim 2 (depends on 1)

The vehicle electroacoustic transducer according to claim 1, wherein the drain hole is formed at a plurality of locations at the metal fitting housing portion.

### Claim 3 (depends on 1)

The vehicle electroacoustic transducer according to claim 1, wherein the drain hole is formed at a corner portion configuring the metal fitting housing portion.

### Claim 4 (depends on 1)

The vehicle electroacoustic transducer according to claim 1, wherein an inclined portion, which is inclined toward the drain hole, is formed at an inner wall of the metal fitting housing portion.