| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a lighting device that can suppress execution of erroneous control.SOLUTION: A lighting device has an illumination part, a reception part, a response part, and a controller. The illumination part illuminates any place. The reception part receives a control signal as a bipolar signal which instructs to control the illumination part and is transmitted from an upper device. The response part returns a response to the upper device by varying the waveform of the control signal in an idle period out of a signal period and an idle period of the control signal received by the reception part. The controller controls the illumination part on the basis of a half-wave rectified signal which is one of a half-wave rectified signal obtained by performing half-wave rectification at the positive polarity on the control signal whose waveform is varied by the response part, and a half-wave rectified signal obtained by performing half-wave rectification at the negative polarity on the control signal and in which the idle period of the control signal and the timing of an L level section are coincident with each other with respect to the control signal whose waveform is varied by the response part.</p> |
