To provide a lighting device for bicycles capable of causing a light emitting element to emit light with high luminance by utilizing vibrations of a bicycle saddle.SOLUTION: A lighting device for bicycles 101 includes a base 1, piezoelectric element diaphragm 3, bouncing gear 5, rack 7, pinion 9, and light emitting element 11. The base 1 is attached to a saddle rail of a vehicle saddle. The piezoelectric element diaphragm 3 has such a structure that a tabular piezoelectric element is joined to a principal surface of a tabular substrate, and has a proximal end borne by the base 1. The rack 7 is fixed to the bottom of the saddle. When the saddle vibrates, the pinion 9 engaged with the rack 7 rotates in a normal or reverse direction. The rotation is transmitted to the bouncing gear 5. The bouncing gear 5 bounces the distal end of the piezoelectric element diaphragm 3 along with the rotation. Electromotive force generated in the piezoelectric element diaphragm 3 that is bounced to vibrate is fed to the light emitting element 11.SELECTED DRAWING: Figure 2

    【課題】 自転車サドルの振動を利用しつつ、発光素子を高い輝度で発光させることのできる自転車用点灯装置を提供する。【解決手段】 自転車用点灯装置101は、基台1と、圧電素子振動板3と、弾き用歯車5と、ラック歯車7と、ピニオン歯車9と、発光素子11と、を備えている。基台1は、自転車サドルのサドルレールに取り付けられている。圧電素子振動板3は、板状の基材の主面に板状の圧電素子が接合された構造を有し、基台1に基端部が支持されている。ラック歯車7はサドルの底面に固定されている。サドルが振動すると、ラック歯車7に噛み合うピニオン歯車9が正逆方向に回転する。この回転は、弾き用歯車5に伝えられる。弾き用歯車5は、回転するのに伴って、圧電素子振動板3の先端部を弾く。弾かれて振動する圧電素子振動板3に発生する起電力が、発光素子11に供給される。【選択図】 図2


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    Title :

    LIGHTING DEVICE FOR BICYCLES


    Additional title:

    自転車用点灯装置


    Contributors:

    Publication date :

    2019-01-10


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B62J Fahrrad- oder Motorradsättel oder -sitze , CYCLE SADDLES OR SEATS



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