Disclosed is a phototherapy skin-lightening apparatus, wherein skin is irradiated by wavelength of light from a variety of light emitting diodes (LED) in different colors, and therefore a purpose of lightening the skin is achieved. The phototherapy skin-lightening apparatus comprises a main body, an LED light emitting unit arranged on the main body, a control unit connected to the LED light emitting unit, and a power unit connected to the control unit wherein the LED light emitting unit is provided with a number of red, yellow/blue, green and far infrared light emitting diodes, and the skin is irradiated alternatively by red light, yellow light/blue right, green light and far infrared rays the control unit is provided with a microprocessor, a charging circuit, a power switching circuit, a booster circuit, a constant current circuit, a voltage detection circuit, an audio alarm circuit, a caution light circuit and the like to provide a user with operation and control the power unit provides electric energy required by respective units. Accordingly, the benefits of stabilizing the wavelength of light waves, reducing power consumption, decreasing the working temperature and the like by the control unit are achieved.一種光療美膚裝置,透過多種不同顏色的發光二極體(LED)的光波波長照射皮膚,進而達到美膚的目的。其包括一主體,一設置在主體的LED發光單元,一連接在LED發光單元的控制單元,及一連接在控制單元的電源單元;該LED發光單元具有多數個紅光、黃光/藍光、綠光及遠紅外線發光二極體,透過紅光、黃光/藍光、綠光及遠紅外線交替照射皮膚;該控制單元具有微處理器、充電電路、切換電源電路、升壓電路、定電流電路、電壓偵測電路、聲音警報電路、警示燈電路等,提供使用者操作與控制;該電源單元提供各單元所需的電能。藉此,透過該控制單元達到光波波長穩定、降低耗電及降低工作溫度等效益。2‧‧‧電源單元21‧‧‧USB接頭22‧‧‧充電電池3‧‧‧控制單元31‧‧‧充電電路32‧‧‧切換電源電路33‧‧‧微處理器34‧‧‧省電開關35‧‧‧升壓電路36‧‧‧遠紅外線與紅色LED定電流電路37‧‧‧黃色/藍色LED定電流電路38‧‧‧驅動LED開關39‧‧‧綠色LED定電流電路4‧‧‧LED發光單元5‧‧‧按鍵開關6‧‧‧電源電壓偵測電路7‧‧‧聲音警報器8‧‧‧LED警示器9‧‧‧藍芽模組10‧‧‧感應模組
