| 摘要 |
PURPOSE:To easily get desired condition of illumination by detecting the length of the on period of an illuminating condition changeover switch and, according to it, changing over the condition of illumination at two stages by a control means and further returning it to the preset condition of illumination by a reset means. CONSTITUTION:Two kinds-long and short- of on periods of a changeover switch 3 are detected by a detection means 10, and according to the output, an inverter 16 is controlled by an illumination control means 11 so as to control a lamp 1 and a miniature bulb 2. Now, if the changeover switch 3 is turned on from lights-out condition, the light 1 lights in dimmed condition, and if the on period is short, the condition of dimmed light/and full light is changed over, and if it is long, the lamp 1 goes out and the miniature bulb 2 lights. Furthermore, if the switch 3 is turned on, the miniature bulb 2 goes out and it gets in full lights-out condition. Hereupon, if the switch 3 is turned on, the lamp 1 lights in the dimmed condition just before lights-out or lights by resetting a flip flop 13 thereby setting the condition of desired dimmed light/full light. |
