To provide an acoustic device which has a structure capable of preventing a cone paper part from being deformed and damaged even when a sudden temperature change occurs, and does not apply an influence to a normal sound production operation.SOLUTION: An acoustic device in which an inner space A of a main body case and an outer space B are separated with an oscillation body 15 as a border, includes: an elastic member 21 which is provided at the main body case; a communication hole 4a communicating the inner space A and the outer space B; and a ventilation member 22 which is provided so as to cover the communication hole 4a, permits the passage of air, and blocks the passage of fluid. Further, the acoustic device includes a blocking part 3c arranged so as to be opposite to the elastic member 21. An intermediate space C is separated with the elastic member 21 and the blocking part 3c as a border. In the blocking part 3c, at least one air resistance passage 3d communicating the intermediate space C and the outer space B is formed.SELECTED DRAWING: Figure 3
【課題】急激な温度変化が生じても、コーン紙部の変形や破壊を防止でき、通常の発音動作に影響を与えない構造の音響装置を提供する。【解決手段】音響装置は、振動体15を境界として、本体ケースの内部空間Aと外部空間Bとが区画され、本体ケースに設けられる弾性部材21と、内部空間Aと外部空間Bとを連通する連通孔4aと、連通孔4aを覆って設けられて、空気の通過を許容し、流体の通過を遮断する通気部材22と、を有している。さらに、弾性部材21と対向して配置される遮蔽部3cを有する。弾性部材21と遮蔽部3cとを境界として、中間空間Cが区画される。遮蔽部3cには、中間空間Cと外部空間Bとを連通する少なくとも一つの空気抵抗通路3dが形成されている。【選択図】図3
ACOUSTIC DEVICE
音響装置
2021-02-25
Patent
Electronic Resource
Japanese
IPC: | H04R LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS , Lautsprecher, Mikrofone, Schallplatten-Tonabnehmer oder ähnliche akustische, elektromechanische Wandler / B60Q ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL , Anordnung von Signal- oder Beleuchtungsvorrichtungen, deren Einbau oder Halterung oder deren Schaltkreise bei Fahrzeugen allgemein |
ACOUSTIC DEVICE, ACOUSTIC PROCESSING METHOD, AND ACOUSTIC PROCESSING PROGRAM
European Patent Office | 2015
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