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    • 7. 发明授权
    • Lighting system
    • 照明系统
    • US07382101B2
    • 2008-06-03
    • US11578628
    • 2005-04-22
    • Kenichi FukudaKoji YamashitaAtsushi UtsuboHiroshi NoharaYukiya Kanazawa
    • Kenichi FukudaKoji YamashitaAtsushi UtsuboHiroshi NoharaYukiya Kanazawa
    • H05B37/02
    • H05B41/2928Y02B20/208
    • 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.
    • 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。
    • 8. 发明授权
    • High pressure discharge lamp
    • 高压放电灯
    • US07492104B2
    • 2009-02-17
    • US11197733
    • 2005-08-03
    • Atsushi UtsuboHiroshi NoharaYukiya Kanazawa
    • Atsushi UtsuboHiroshi NoharaYukiya Kanazawa
    • H01J7/44
    • H05B41/2881H01J61/34H01J61/544H01J61/56Y02B20/204
    • A high pressure discharge lamp includes an outer tubular bulb whose inner space is exhausted to a vacuum; an arc tube contained in the outer tubular bulb; and a voltage reducing switching element for reducing a voltage applied to the arc tube. The voltage reducing switching element includes a heat sensitive switching element and a starting-voltage reducing element which are connected in series. During a period in which the heat sensitive switching element has a predetermined temperature or higher, the heat sensitive switching element is closed to electrically connect the arc tube and the voltage reducing switching element in parallel, so that the starting-voltage reducing element is operated. During a period in which the heat sensitive switching element has a temperature lower than the predetermined temperature, the heat sensitive switching element is opened so that the starting-voltage reducing element is not operated.
    • 高压放电灯包括内部空间被排出到真空的外管状灯泡; 包含在外管状灯泡中的电弧管; 以及用于降低施加到电弧管的电压的降压开关元件。 降压开关元件包括串联连接的热敏开关元件和起动电压降低元件。 在热敏开关元件具有预定温度或更高温度的时段内,热敏开关元件闭合,使电弧管和降压开关元件并联电连接,从而起动降压元件工作。 在热敏开关元件的温度低于预定温度的期间,打开热敏开关元件,使得起动电压降低元件不工作。