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US 10,328,831 B2Granted
Acoustic device
AssigneesClarion Co., Ltd., Tachi-S Co., Ltd.
InventorsNaoki Takada, Fumiaki Nakashima, Takao Ishikawa, Takahiko Nagasawa, Yasuyuki Ito
Life of this patent
Estimating the term…
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.
Claims11
An acoustic device comprising:
- a core material of a closed structure functioning as a core of a headrest main body, the core material having an inner space;
- acoustic speakers communicating with the inner space of the core material and attached to the core material;
- and
- hollow headrest stays that pierce through the core material, wherein
- the hollow headrest stays are configured to be inserted into a backrest section of a seat to connect the headrest main body to the backrest section,
- the inner space of the core material forms a sound chamber, air therein vibrating and reinforcing sound from the acoustic speakers,
- at least one of the hollow headrest stays includes a hollow section including a first communication hole, which is opened to the sound chamber formed by the inner space, and a second communication hole, which is opened to an inside of the backrest section, so as to flow air from the sound chamber formed by the inner space of the core material to the inside of the backrest section via the hollow section, and
- the first communication hole is located behind a vibration face of the acoustic speakers, and opens to an upper side of the hollow headrest stays.
5 more elements
Dependencies are inferred from the claim text.