Provided is a speaker device in which reproduction sound pressure is increased, and heat resistance and water resistance are improved. The speaker device includes: a diaphragm formed of a film containing polyimide; and a frame for supporting the diaphragm. A cross-section passing the center of the diaphragm and parallel to a sound emission direction includes sequentially from an inner periphery to an outer periphery of the diaphragm along the sound emission direction: a first bent plate portion having a concave arc; a second bent plate portion having a convex arc; a third bent plate portion having a concave arc; and a fourth bent plate portion having a convex arc. An area of the first bent plate portion is larger than any of areas of the second, the third, the fourth bent plate portions.


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    Title :

    SPEAKER DEVICE


    Additional title:

    LAUTSPRECHERVORRICHTUNG
    DISPOSITIF DE HAUT-PARLEUR


    Contributors:

    Publication date :

    2020-05-06


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    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 / G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES



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