An electrode-less discharge lamp lighting apparatus which is electrically connected to a dimming unit (2) is provided with: an electrode-less fluorescent lamp (3); and a lighting circuit (4) operable to apply a high-frequency voltage to the electrode-less fluorescent lamp(3), wherein the lighting circuit (4) includes: an AC/DC converting unit (5) operable to convert a phase-controlled AC voltage outputted from the dimming unit (2) into a DC voltage; a DC/AC converting unit (6) operable to convert the DC voltage into a high-frequency voltage; and a dimming controlling unit (7) that includes a resistor (29), a switching element (28), and a timer circuit (27) so as to detect a timing of a turn-on of the phase-controlled AC voltage and to, based on the detected timing, allow a current whose value is at least a threshold to flow across output terminals of the AC/DC converting unit (5) for at least a duration of a time lag between the turn-on of the phase-controlled AC voltage and the generation of the high-frequency voltage by the DC/AC converting unit (6). IMAGE
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机译:电连接至调光单元(2)的无电极放电灯点亮装置包括:无电极荧光灯(3);和无电极荧光灯(3)。照明电路(4),可向无电极荧光灯(3)施加高频电压,其中,照明电路(4)包括:AC / DC转换单元(5),用于转换相位从调光单元(2)输出的受控交流电压为直流电压; DC / AC转换单元(6),用于将DC电压转换为高频电压;调光控制单元(7),其包括电阻器(29),开关元件(28)和计时器电路(27),以检测所述相控交流电压的接通定时,并且根据检测到的时序,允许至少为阈值的电流流经AC / DC转换单元(5)的输出端子至少两相之间的时间间隔: DC / AC转换单元(6)控制AC电压并产生高频电压。 <图像>
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