公开(公告)号：US20070285032A1

公开(公告)日：2007-12-13

申请号：US11578628

申请日：2005-04-22

申请人： Kenichi Fukuda ,  Koji Yamashita ,  Atsushi Utsubo ,  Hiroshi Nahara ,  Yukiya Kanazawa

发明人： Kenichi Fukuda ,  Koji Yamashita ,  Atsushi Utsubo ,  Hiroshi Nahara ,  Yukiya Kanazawa

IPC分类号： H05B41/36

CPC分类号： H05B41/2928 ,  Y02B20/208

摘要： Disclosed is a lighting system capable of preventing damage to an outer-tube resulting from an outer-tube discharge that often occurs at the end of useful life of a lamp. The lighting system includes: a metal halide lamp having an arc tube housed within an outer tube; and a lamp .lighting device for operating the metal halide lamp. The lamp lighting device includes: a power supply unit operable to supply an electric power to the metal halide lamp; a detecting unit operable to detect an electrical property of the metal halide lamp; a judging unit operable to judge, based on the detected electrical property, whether a currently occurring discharge is an outer-tube discharge; and an instructing unit operable to instruct the power supply unit to suspend or reduce the electric power supply to the metal halide lamp upon a judgment that the currently occurring discharge is an outer-tube discharge. The detection unit detects a lamp voltage. The judging unit judges that the currently occurring discharge is an outer-tube discharge if the detected lamp voltage differs from a lamp voltage under normal operation.

摘要翻译： 公开了一种照明系统，其能够防止由于在灯的使用寿命结束时经常发生的外管排出而导致对外管的损坏。 照明系统包括：金属卤化物灯，其具有容纳在外管内的电弧管; 以及用于操作金属卤化物灯的灯光照明装置。 灯具照明装置包括：电源单元，其可操作以向金属卤化物灯供电; 检测单元，其可操作以检测所述金属卤化物灯的电特性; 判断单元，其可操作以基于检测到的电气特性来判断当前发生的放电是否为外管放电; 以及指示单元，其可操作以在判断为当前发生的放电是外管放电时指示电源单元暂停或减少对金属卤化物灯的电力供应。 检测单元检测灯电压。 如果检测到的灯电压与正常操作时的灯电压不同，则判断单元判断当前发生的放电是外管放电。