To provide a self-luminous dental handpiece capable of automatic power generation and enhancing convenience in use by emitting light.SOLUTION: A housing 1, a housing chamber 11 is formed therein, a working chamber 12 is provided at one end, a power generating device 3 is provided in a housing chamber, and a first case 31 and a second case 32 are provided , A gap is provided between the first case and the second case, a through hole is provided in the second case, a rotatable fan is provided in the second case, a bar magnet is coaxially connected to the fan, and an outer circumference of the bar magnet , The coil is wound up, the coil is electrically connected to the first conductive terminal, and the coil is fitted and connected to the second conductive terminal, further connected to the light emitting device 4 by the electric wire, and the intake pipe 21, the reflux A pipe 22, a cooling water pipe 23 and a cooling gas pipe 24 are provided, and each pipe is fixed by a positioning base 25, the intake pipe 21 connects an external gas supply source and the working chamber 12, the return pipe 22 communicates with the working chamber 12 and the power generation device 3 are connected.BACKGROUND OF THE INVENTION【課題】自動発電が可能で、発光することで使用上の利便性が高くなる自発光型歯科用ハンドピースを提供する。【解決手段】殻体1を含み、その内部に収容室11が形成され、一端に作動室12が設けられ、収容室に発電装置3が設けられ、第1ケース31及び第2ケース32を有し、両方の間に隙間があり、且つ第2ケースに貫通孔が設けられ、第2ケースに回転可能なファンが設けられ、該ファンに棒磁石が同軸に接続され、且つ該棒磁石の外周にコイルが巻き取られ、コイルが第1導電端子に電気的に接続され、且つ第2導電端子と嵌合接続され、さらに電線によって発光装置4に接続され、収容室11に吸気管21、還流管22、冷却水管23及び冷却ガス管24が設けられ、且つ位置決めベース25により各管が固定され、吸気管21が外部のガス供給源と作動室12とを接続し、還流管22が作動室12と発電装置3とを接続する。【選択図】図1
