PROBLEM TO BE SOLVED: To provide an alarm sound generation device capable of preventing collision between a fixed iron core and a movable iron core, suppressing variation of sound pressure and being operated by high sound pressure.SOLUTION: A vehicle horn 1 has a controller 2 which determines a collision duty ratio at which a movable iron core 11 and fixed iron core 12 collide, or stores it in advance, with respect to a detection value of battery voltage outputted by a battery 3 of a vehicle. The controller 2 determines a drive duty ratio corresponding to the voltage applied to a coil 13, according to the collision duty ratio.

    【課題】固定鉄心と可動鉄心の衝突を防止し、音圧の変動を抑制してかつ高い音圧で動作させることができる警報音発生装置を提供する。【解決手段】車両用ホーン1は、車両のバッテリ3が出力するバッテリ電圧の検出値に対して、可動鉄心11と固定鉄心12とが衝突する衝突デューティ比を求め、または予め記憶する制御装置2を備える。制御装置2は、コイル13へ印加される電圧に対応する駆動デューティ比を、衝突デューティ比に応じて決定する。【選択図】図3


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    Title :

    ALARM SOUND GENERATION DEVICE


    Additional title:

    警報音発生装置


    Contributors:

    Publication date :

    2015-07-30


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES / 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 / H01F MAGNETS , Magnete



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