| 摘要 |
PURPOSE:To sufficiently make a switchover from lighting a miniature electric bulb to entire lighting-up only at one time opening and closing operation by having a first switching means for switching a lighting condition over to N-step conditions through the operation of operating members, and a second switching means for switching a lighting condition from the N-step conditions to N-1 step ones excluding a light-extinguished one in operative association with opening and closing a power source circuit for a floodlight. CONSTITUTION:When a pull string 26 or the like provided to a lighting system is operated, a first switching means is actuated to switch a lighting condition over to such N-step conditions including a light-extinguished condition as, for example, making sequential switchovers from entire lighting-up to light-adjusted lighting, thence to lighting a miniature electric bulb and extinguishing the lighting system, and back to the entire lighting-up. The lighting system may be extinguished accordingly even through the operation of the pull string or the like. When a power source circuit 2 on the other hand is opened and closed through the operation of a wall switch 9 or the like, a second switching means is actuated to switch a lighting condition over to such N-1 step conditions excluding the light-extinguished condition as making sequential switchovers from entire lighting-up to light-adjusted lighting, thence to lighting the miniature electric bulb and back to the entire lighting-up. It may consequently require such simple operations as lighting the miniature electric bulb extinguishing the lighting system (opening the wall switch) and entirely lighting the lighting system to make a switchover from lighting the miniature electric bulb to the entire lighting-up by use of the ordinary wall switch 9. |
