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    • 1. 发明申请
    • LIGHTING CIRCUIT FOR HIGH-PRESSURE DISCHARGE LAMP
    • 高压放电灯的照明电路
    • US20070024204A1
    • 2007-02-01
    • US11457837
    • 2006-07-17
    • Toshitaka FUJIIAtsuji NAKAGAWA
    • Toshitaka FUJIIAtsuji NAKAGAWA
    • H05B39/04
    • H05B41/2923Y10S315/05Y10S315/07
    • To provide a lighting circuit of a projector that can be driven by both the commercial alternating-current power supply and a battery and is convenient for portable use. A lighting circuit for a high-pressure discharge lamp 14 includes: a DC/DC converter 1 that boosts a direct-current voltage and outputs the boosted direct-current voltage; an AC/DC converter 10 that rectifies an alternating-current voltage to output a direct-current voltage; an input switch circuit 2 and a power switch circuit 3 that switch between the DC/DC converter 1 and the AC/DC converter 10; a ballast circuit 11 that stabilizes the lighting of the high-pressure discharge lamp 14; a power control section 12 that controls the power supply from the ballast circuit 11 to the high-pressure discharge lamp 14; a lighting initiation circuit 13 that starts lighting of the high-pressure discharge lamp 14; and the high-pressure discharge lamp 14, and the power switch circuit 3 performs power switching in such a manner that a relatively low power is supplied to the high-pressure discharge lamp 14 when a direct-current power supply is connected only to the DC/DC converter, and a relatively high power is supplied to the high-pressure discharge lamp 14 when the commercial alternating-current power supply is connected to the AC/DC converter 10.
    • 提供可由商用交流电源和电池驱动的投影仪的照明电路,并且便于便携式使用。 用于高压放电灯14的点亮电路包括:DC / DC转换器1,其升压直流电压并输出升压的直流电压; AC / DC转换器10,其对交流电压进行整流以输出直流电压; 在DC / DC转换器1和AC / DC转换器10之间切换的输入开关电路2和电源开关电路3; 稳定高压放电灯14的点亮的镇流器电路11; 控制从镇流器电路11到高压放电灯14的电源的电力控制部12; 启动高压放电灯14点亮的点亮启动电路13; 并且高压放电灯14和电源开关电路3进行电力切换,使得当直流电源仅连接到DC时,向高压放电灯14提供相对低的功率 / DC转换器,并且当商用交流电源连接到AC / DC转换器10时,向高压放电灯14提供相对较高的功率。
    • 2. 发明申请
    • HIGH-PRESSURE DISCHARGE LAMP
    • 高压放电灯
    • US20100171421A1
    • 2010-07-08
    • US12652799
    • 2010-01-06
    • Atsuji NAKAGAWAToshitaka FUJII
    • Atsuji NAKAGAWAToshitaka FUJII
    • H01J61/36
    • H01J61/822H01J61/545
    • The high-pressure discharge lamp includes: an arc tube; sealing portions which respectively have preseal glasses embedded therein, and at least one of which has an inert gas enclosing space which is arranged so as to be in contact with an outer surface of a corresponding the one preseal glass; a pair of feeders including a pair of electrodes, external lead rods, and metal foils, respectively; an external conductor which is arranged on an outer surface of the one sealing portion so as to be corresponded to the inert gas enclosed space, and connected to the external lead rod from the other sealing portion; and an internal conductor which is arranged in the inert gas enclosing space in the one sealing portion, and which has an electric potential identical to that of one feeder corresponding to the one sealing portion around which the external conductor is arranged.
    • 高压放电灯包括:电弧管; 密封部分分别具有嵌入其中的预制眼镜,并且其中至少一个具有惰性气体封闭空间,其布置成与相应的一个前视玻璃的外表面接触; 分别包括一对电极,外部引线棒和金属箔的一对馈线; 外部导体,其布置在所述一个密封部分的外表面上,以对应于所述惰性气体封闭空间,并且从所述另一个密封部分连接到所述外部引导杆; 以及布置在一个密封部分中的惰性气体封闭空间中的内部导体,并且具有与布置有外部导体的一个密封部分相对应的一个馈送器的电位相同的电位的内部导体。