| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To solve a problem that, in lighting on and off an indoor illumination load, a conventional lighting device utilizing a human sensor and a brightness sensor lacks in convenience since it is fixed to a sensor mode at a start-up although it is equipped with a sensor mode and a continuous lighting mode, and it lacks in operability since switching methods are different as a manual switching from the sensor mode to the continuous lighting mode is done by an 'OFF' operation (0.2 to 2 sec.) of a wall switch and a manual switching from the continuous lighting mode to the sensor mode is done by an 'OFF' operation (2 sec. or more) of the wall switch. <P>SOLUTION: The lighting device with a human sensor is provided with a sensor lighting mode in which it lights up when a human existence is detected and lights off after a time limit of a short-time timer, and a continuous lighting mode lighting an illumination load and automatically switching to the sensor lighting mode after a time limit of a long-time timer, and the two modes are changed over by a start-up mode setting switch for setting a start-up mode and a wall switch for manual switching. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
