ACOUSTIC DEVICE

• US 20170106775A1
• Filed: 05/15/2015
• Published: 04/20/2017
• Est. Priority Date: 06/27/2014
• Status: Active Grant

• Current Assignee: Clarion Co., Ltd. (Faurecia SA), Tachi-S Company Limited
• Original Assignee: Clarion Co., Ltd. (Faurecia SA), Tachi-S Company Limited
• Inventors: TAKADA, Naoki, NAKASHIMA, Fumiaki, ISHIKAWA, Takao, NAGASAWA, Takahiko, ITO, Yasuyuki
• Granted Patent: US 10,328,831 B2
• Time in Patent Office: Days
• CPC Class Codes: B60N 2/80 Head-rests
• CPC Class Codes: B60N 2/809 vertically slidable
• CPC Class Codes: B60N 2/879 with additional features not related to head-rest positioning, e.g. heating or cooling devices or loudspeakers
• CPC Class Codes: H04R 1/025 Arrangements for fixing loudspeaker transducers, e.g. in a box, furniture
• CPC Class Codes: H04R 1/2819 for loudspeaker transducers

Abstract

To make it possible to improve a low-tone reproducing ability with a simple structure in an acoustic device including speakers in a headrest. The acoustic device includes a core material of a closed structure functioning as a core of a headrest main body, acoustic speakers 50, 50 disposed in the core material, and hollow headrest stays 15, 15 that pierce through the core material. The headrest stays 15, 15 circulate the air on the inside of the core material to the outer side via hollow sections.

Claims

1. An acoustic device comprising:

a core material of a closed structure functioning as a core of a headrest main body;

acoustic speakers disposed in the core material; and

hollow headrest stays that pierce through the core material, wherein

the headrest stays are inserted into a backrest section of a seat to connect the headrest main body to the backrest section, and

the headrest stays cause an inner space of the core material and an inside of the backrest section to communicate via a hollow section.

2. The acoustic device according to claim 1, wherein the headrest stays include communication holes for the air at ends or on side surfaces of pipe shapes.

3. The acoustic device according to claim 1, further comprising:

an extended enclosure provided inside a backrest section, wherein

the headrest stays communicate with the extended enclosure.

4. The acoustic device according to claim 3, wherein the extended enclosure includes a port for discharging the air to a front surface side of the backrest section.

5. The acoustic device according to claim 1, wherein

the acoustic speakers are provided as a pair on left and right, and

the headrest stays are provided as a pair on the left and the right in positions close to the acoustic speakers.

6. The acoustic device according to claim 1, further comprising:

a frame member made of metal provided on an inner side of the headrest main body, wherein

the frame member integrally includes the headrest stays, and

a heat generating body is fixed to the frame member.

7. The acoustic device according to claim 6, wherein portions near the heat generating body in the headrest stays are formed small in a sectional area.

8. The acoustic device according to claim 6, wherein

the frame member is provided on an inner side of the core material and supports the core material, and

the headrest stays cause a space on the inner side of the core material to communicate with the outer side.

9. The acoustic device according to claim 6, wherein the heat generating body is an acoustic signal processing circuit for the acoustic speakers.

10. (canceled)