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    • 3. 发明授权
    • Tungsten-halogen light bulb, and reflector lamp using the same
    • 钨卤灯泡和反光灯使用相同
    • US06611102B2
    • 2003-08-26
    • US09798754
    • 2001-03-02
    • Mituhiko KimotoTaku IkedaHiroshi SugimotoTakeshi Fujikawa
    • Mituhiko KimotoTaku IkedaHiroshi SugimotoTakeshi Fujikawa
    • H01K140
    • H01K1/66H01K1/26H01K1/325H01K1/50Y02B20/12
    • The present invention provides a tungsten-halogen light bulb having an arc tube with a seal portion at one end. A filament is provided in the interior of the arc tube, and a basic gas mainly comprising at least either gaseous xenon or gaseous krypton is filled in the arc tube. When V (V) denotes a rated voltage of the tungsten-halogen light bulb, P(MPa) denotes a filling pressure of the basic gas at a room temperature, and Xe vol. % and Kr vol. % respectively denote composition ratios of the gaseous xenon and of the gaseous krypton, the following formulas (1) and (2) are satisfied simultaneously, in which ‘%’ means ‘volume %’. V≧100 (Volt)  (1) P≧0.7+{0.1×(Kr%/(Kr%+Xe%))}  (2) In these formulas, Kr %+Xe %=100(%), 0≦Kr %≦100, and 0≦Xe %≦100. Accordingly, a crack at the seal portion of the arc tube is prevented and the lifetime is improved.
    • 本发明提供了一种具有在一端具有密封部分的电弧管的钨卤素灯泡。 在电弧管的内部设置灯丝,并且在电弧管中填充主要包含气态氙气或气态氪气的碱性气体。 当V(V)表示钨卤素灯泡的额定电压时,P(MPa)表示室温下的碱性气体的填充压力,Xe vol。 %和Kr vol。 %分别表示气态氙和气态氪的组成比,同时满足下式(1)和(2),其中“%”表示“体积%”,在这些式中,Kr%+ Xe%= 100(%),0 <= Kr%<= 100,0 <= Xe%<= 100。 因此,防止了电弧管的密封部分的裂纹,提高了寿命。