PROBLEM TO BE SOLVED: To provide a vehicle approach communicator capable of providing a vehicle approach report sound having a frequency characteristic being flat across a wide frequency band by using a piezoelectric element sounding body.SOLUTION: A vehicle approach communicator includes a piezoelectric element sounding body 3 having a frequency characteristic containing a resonance frequency at a specified frequency, a filter circuit 11 which has an inverse frequency characteristic that cancels the frequency characteristic of the piezoelectric element sounding body 3 and filters a vehicle approach report signal 1a with the inverse frequency characteristic by inputting the vehicle approach report signal 1a in the frequency band containing the resonance frequency, and an amplifier circuit 13 and a step-up drive circuit 14 which output an output signal 11a of the filter circuit 11 to the piezoelectric element sounding body 3.SELECTED DRAWING: Figure 1

    【課題】圧電素子発音体を使用して広い周波数帯域でフラットな周波数特性を有する車両接近通報音を得ることが可能な車両接近通報器を提供する。【解決手段】所定周波数に共振周波数を持つ周波数特性を有する圧電素子発音体3と、前記圧電素子発音体3の周波数特性を相殺するような逆周波数特性を有し、上記共振周波数を含む周波数帯域の車両接近通報信号1aを入力して当該車両接近通報信号1aを上記逆周波数特性でフィルタリングするフィルタ回路11と、当該フィルタ回路11の出力信号11aを圧電素子発音体3に出力するアンプ回路13および昇圧駆動回路14とを備える。【選択図】 図1


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    Titel :

    VEHICLE APPROACH COMMUNICATOR


    Weitere Titelangaben:

    車両接近通報器


    Beteiligte:
    TOYAMA KOICHI (Autor:in) / ENDO KUNIO (Autor:in) / YAMADA TAKU (Autor:in)

    Erscheinungsdatum :

    28.09.2017


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    IPC:    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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