| 摘要 |
PROBLEM TO BE SOLVED: To provide a lighting fixture that achieves further efficient operation.SOLUTION: A lighting device includes: a first normally-on switching element; a second normally-on switching element connected in series to the first normally-on switching element; a semiconductor light-emitting element connected in series to the first normally-on switching element and the second normally-on switching element; a series circuit connected in parallel to the second normally-on switching element and including a series connection of an inductor and a capacitor; and drive control means having a normally-on switching element connected to a gate of the second normally-on switching element and causing the second normally-on switching element to perform on-operation. |
