| 摘要 |
<p>It is possible to improve circuit protection of a light emitting device capable of being driven by AC voltage or to improve stability of brightness. A light emitting element group (10) includes a plurality of light emitting element units (DU). A first current limit circuit (20) is arranged in series to the light emitting element group (10) so as to limit a first drive current Idrv1 flowing from one end to the other end of the light emitting element group (10). A second current limit circuit (30) is arranged in parallel to the first current limit circuit (20) so as to limit a second drive current Idrv2 flowing to the light emitting element group (10) in the direction opposite to the first drive current Idrv1. The light emitting element units (DU) include a first light emitting element (Da) and a second light emitting element (Db). The anode of the first light emitting element (Da) is connected to the cathode of the second light emitting element (Db) while the anode of the second light emitting element (Db) is connected to the cathode of the first light emitting element (Da).</p> |
