| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent power loss and perform power saving in an illumination lamp in which lighting of a semiconductor light emitting element is enabled to be adaptable to plural methods.SOLUTION: When an illumination lamp is connected to an inverter stabilizer, a switching circuit connects a power supply wire to a resistance circuit for generating impedance which is equivalent to a filament. On the other hand, when the illumination lamp is connected in a manner other than the manner based on the inverter stabilizer, the switching circuit separates the resistance circuit from the wire. Accordingly, when the illumination lamp is connected in the manner other than the manner based on the inverter stabilizer, a disadvantage that power is needlessly consumed by the resistance circuit can be prevented, and power of the illumination lamp can be saved.</p> |
