An approaching vehicle warning speaker device includes a diaphragm that generates sound, an edge section joined to an outer edge of the diaphragm, and a frame supporting an outer periphery of the edge section. The diaphragm is made of a film containing polyimide. The edge section includes a base member made of fiber and rubber-containing waterproof layers provided on both sides of the base member.


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    Titel :

    APPROACHING VEHICLE WARNING SPEAKER DEVICE


    Beteiligte:
    WATANABE KAZUAKI (Autor:in) / SATO JUNICHI (Autor:in) / MIYATA SUSUMU (Autor:in) / TSURUTA MAKOTO (Autor:in)

    Erscheinungsdatum :

    2017-04-20


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    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



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