LIGHTING DEVICE AND LIGHTING FITTING

PROBLEM TO BE SOLVED: To provide a lighting device and lighting fitting, capable of stable operation of a suppression circuit of an inrush current as well as suppression of its enlargement.SOLUTION: The lighting device includes: a smoothing capacitor C3 connected with a DC power supply DC; a lighting circuit 40 connected in parallel to the smoothing capacitor and generating a voltage supplied to a light source 51 by turning on and off a switching element Q1; a lighting control unit 30 controlling tuning on and off the switching element; a current limiting resistor R3 provided between a negative electrode of the DC power supply and a negative electrode of the smoothing capacitor; and a thyristor SCR provided in parallel to the current limiting resistor. A control terminal 14 of the thyristor is connected with a high-voltage line for connecting a positive electrode of the DC power supply with a light source, and the lighting control unit turns off the switching element when a voltage between the negative electrode of the DC power supply and an output terminal on the high-potential side of the lighting circuit is larger than a threshold value.SELECTED DRAWING: Figure 1 【課題】突入電流の抑制回路の動作を安定させることが可能であり、大型化を抑制できる点灯装置および照明器具を提供することを目的とする。【解決手段】直流電源ＤＣに接続された平滑コンデンサＣ３と、該平滑コンデンサと並列に接続され、スイッチング素子Ｑ１のオンオフによって光源５１に供給する電圧を発生させる点灯回路４０と、該スイッチング素子のオンオフを制御する点灯制御部３０と、直流電源の負極と平滑コンデンサの負極との間に設けられた限流抵抗Ｒ３と、限流抵抗と並列に設けられたサイリスタＳＣＲと、を備える。該サイリスタの制御端子１４は、直流電源の正極と光源とを接続する高電圧ラインに接続され、点灯制御部は、直流電源の負極と点灯回路の高電位側の出力端子との間の電圧が閾値よりも大きくなるとスイッチング素子をオフする。【選択図】図１