| 摘要 |
PROBLEM TO BE SOLVED: To provide a lighting device that can broaden the toning range.SOLUTION: A lighting device 1A for supplying current to plural light emission element arrays (first light emission element array LEDG1, second light emission element array LEDG2) has a common terminal 61, plural branch terminals (first branch terminal 62, second branch terminal 63), a constant current source 30 for supplying current to each of plural light emission element arrays which is connected between the common terminal 61 and each of the plural branch terminals so that the sum of current flowing from the common terminal 61 to the respective plural branch terminals is constant, and a current adjusting circuit 10A for adjusting the magnitude of current flowing from the common terminal 61 into at least one of the plural branch terminals.SELECTED DRAWING: Figure 1 |
