| 摘要 |
PROBLEM TO BE SOLVED: To divide a heating component of a light source lighting device and disperse heating positions to make the light source lighting device thinner.SOLUTION: A buck converter 40a of a light source lighting device 20a comprises switching elements 41a and 41b, coils 42a and 42b, diodes 43a and 43b, a capacitor 44, a current control circuit 45, and a resistor 46. The switching element 41a and the diode 43a are connected to the coil 42a on a substrate, and the switching element 41b and the diode 43b are connected to the coil 42b on the substrate. These are connected in parallel to each other. |
