| 摘要 |
According to one embodiment, an LED lighting device comprises at least one normally-on type switching element (13, Q1, Q11), an output generation unit (10, 11, 12, AC, DB, C1, C11) that generates DC output by an on-off operation of the switching element, a semiconductor light emitting element (14, LC) that is lit by the DC output generated by the output veneration unit, and a driving control unit (18, CC, L11, DW) that causes the switching element to perform an off operation using a current passed through the semiconductor light emitting element. |
