A non-contact type underwater illumination device uses electromagnetic coupling to transmit electrical power so as to completely eliminate the risks of electric shock and electric leak. The device comprises a power supply unit, a power unit, a control unit, a non-contact power transmission unit, an output unit, and a light emission unit. The structure of this non-contact underwater illumination device adopts a waterproof enclosure, and the internals comprise the power supply unit that converts an input alternate current power into a rectified power supply for powering other units. The control unit is externally connected to single-chip processing and control. The power unit uses an electronic power switch to convert the rectified power supply into a high-frequency harmonic voltage to transmit electrical power to the secondary side through electromagnetic coupling, followed by connecting to the output unit for being converted into a direct current power for energizing the light emission unit, and the output loading current information is instantly fedback to the control unit to alter the periodic time for carrying out high efficiency power transmission and system stability, as well as to detect whether a load is connected for immediate supply of electrical power or automatic shutdown to thereby enhance safety of underwater illumination device.一種非接觸安全水中照明設備,採用電磁耦合傳輸電力,可完全避免電擊和漏電之意外,其裝置包括電源單元、功率單元、控制單元、非接觸電力傳輸單元、輸出單元與發光單元。本非接觸水中照明設備之機構是採用防水性外殼,內部包含電源單元將輸入交流電源轉換成整流電源以供電給其他單元,控制單元可外接單晶片處理與控制,功率單元經電子電力開關將整流電源轉換成高頻諧振電壓,並透過電磁耦合傳送電力於二次側,之後連接輸出單元轉換成輸出直流電源點亮發光單元,即時回授輸出負載電流訊息給控制單元,改變週期時間進行高效率電力傳輸與系統穩定度,並可偵測有無連接負載,立即供應電源或自動關閉提高水中照明設備的安全性。1...非接觸式水中照明設備10...電源單元20...功率單元30...控制單元40...非接觸電力傳輸單元50...輸出單元60...發光單元VA...交流電源VAC...輸入交流電源VB...交流輸出電源VCC...整流電源VCTL...控制電壓VO...輸出電源ILOAD...負載電流信號
