| 摘要 |
PURPOSE:To perform dim-lighting with a small case by providing a control circuit feeding the drive power of illumination lamps via a contact at the time of full-lighting and feeding it via a semiconductor control element at the time of dim-lighting. CONSTITUTION:The signal from a remote control device nearby is received by a light receiving section 1, for example, and a control circuit 2 decodes the signal and controls illumination lamps based on the decoded result. If the control signal from the remote control device is a full-lighting signal, the illumination lamps are set to the full-lighting state. If it is a dim-lighting signal, a triode AC switch 5 is driven via a photo-coupler 4, the drive power is fed to the illumination lamps via the triode AC switch 5, and the illumination lamps are set to the dim-lighting state. Since the drive power is fed via a semiconductor control element at the time of dim-lighting, dim-lighting can be performed with a small case. |
