DIMMING DEVICE AND LIGHTING DEVICE USING SAME

摘要

It is an object to provide a dimming device and a lighting device using the same configured to improve a light emission efficiency at dimming time and to make a light source long in life. The lighting device includes a light source (1) and a dimming device (2). The dimming device (2) is provided with an electric current output circuit (5) for supplying a constant electric current for lighting to the light source (1) comprised of an organic electro-luminescence element, a dimming circuit (6) for dimming the light source by intermittently supplying the constant electric current output from the electric current output circuit (5) to the light source (1) and a discharge prevention circuit (diode) (70) for preventing electrical charges stored at a capacitive component of the organic electro-luminescence element from being discharged.