A lighting device includes a rectifier circuit for rectifying an AC voltage, a power-factor correction circuit for inputting the rectified voltage from the rectifier circuit to generate a first DC voltage, a capacitor for smoothing the rectified voltage to generate a second DC voltage, a first lighting power supply, and a second lighting power supply. The first lighting power supply, of which input power supply is the first DC voltage, supplies lighting power to a first light source including one or more light emitting devices. The second lighting power supply, of which input power supply is the second DC voltage, supplies lighting power to a second light source including one or more light emitting devices. An output voltage of the second lighting power supply is lower than an output voltage of the first lighting power supply.