The present invention provides a compact and low-cost microphone unit that responds to a highest level IPX9K of a vehicle-mounted IP (K) test. The microphone unit comprises: a cylindrical case with open top surface and bottom surface; a metal waterproof film wherein a thickness is 0.01 mm or more and 0.05 mm or less, a hardness is 100 HV or more, a yield strength is 70 N/mm^2 or more, and a tensile strength is 350 N/mm^2 or more, and is fixed to the bottom surface of the case to cover the opening of the bottom surface of the case; a substrate disposed inside the case; a microphone mounted on the substrate; and a sealing member that seals the opening of the top surface of the case.

    [과제] 차량 탑재용 IP(K) 시험의 최고 레벨 IPX9K에 대응하고, 소형이고 저비용의 마이크로폰 유닛을 제공한다. [해결수단] 상면과 하면이 개구된 통형상의 케이스와, 두께 0.01mm 이상 0.05mm 이하, 경도 100HV 이상, 내력 70N/mm2 이상, 인장 강도 350N/mm2 이상이고, 케이스의 하면의 개구부를 막도록 케이스의 하면에 고착된 금속제의 방수막과, 케이스 내에 배치된 기판과, 기판에 실장된 마이크로폰과, 케이스의 상면의 개구부를 밀봉하는 밀봉 부재를 포함한다.


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    Title :

    MICROPHONE UNIT


    Additional title:

    마이크로폰 유닛


    Contributors:

    Publication date :

    2022-08-10


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    H04R LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS , Lautsprecher, Mikrofone, Schallplatten-Tonabnehmer oder ähnliche akustische, elektromechanische Wandler / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR



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