发明名称 |
Incandescent lamp and its use. |
摘要 |
An incandescent lamp which is operable at about 200-275V is obtainable by enclosing a filling composition consisting of about 80-95% by volume of krypton gas and about 5-20% by volume of nitrogen gas in a glass envelope (1) bearing a tungsten filament (2) and an inner volume of about 0.2-1.2ml/operating wattage in an amount of about 0.7-0.9ml/ml of the inner volume. The incandescent lamp exhibits satisfactory luminous characteristics and an extended life expectancy without causing arc discharge even when operated at a voltage of about 200-275V. Thus a lighting device which comprises such an incandescent lamp as the luminous source and a power source capable of energizing it at a voltage of about 200-275V is very useful in general and special illumination. <IMAGE> |
申请公布号 |
EP0632483(A1) |
申请公布日期 |
1995.01.04 |
申请号 |
EP19940304820 |
申请日期 |
1994.06.30 |
申请人 |
HAYASHIBARA, KEN |
发明人 |
MATSUDA, OSAMU;YAGUCHI, TAKAHIKO |
分类号 |
H01K1/32;H01K1/50 |
主分类号 |
H01K1/32 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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