| 摘要 |
<p>This lighting device is provided with the following: a plurality of light-emitting elements that are connected in series and have different emission spectra; and a plurality of drive devices that correspond respectively to the plurality of light-emitting elements and each drive the corresponding light-emitting element. Each drive device contains the following: a first capacitance element provided for the corresponding light-emitting element; a group of switching elements that, on the basis of a periodic pulsed control signal, charge the first capacitance element in accordance with a power-supply voltage applied to the input node of said first capacitance element and electrically connect the charged first capacitance element to the corresponding light-emitting element, thereby supplying current to said light-emitting element; and a pulsed-signal control circuit that regulates the period of and outputs the pulsed control signal.</p> |
