Claims
- 1. A filling composition for incandescent lamp, consisting of 20-75% by volume of xenon gas, and 25-80% by volume of nitrogen gas.
- 2. An incandescent lamp which encloses a filling composition consisting of 20-70% by volume of xenon gas, and 25-80% by volume of nitrogen gas; and has an operating voltage of about 90-150v and a rated wattage of 40-100w.
- 3. An incandescent lamp which encloses a filling composition consisting of 20-75% by volume of xenon gas, and 25-80% by volume of nitrogen gas; and has an operating voltage of about 90-150v and a rated wattage of 40-100w; wherein said filling composition is enclosed to give a pressure of about 700-800 torr in incandescent state.
- 4. The lamp of claim 3, the arc starting voltage of which is not lower than 170% of its rating.
- 5. The lamp of claim 3, which exhibits a life expectancy not shorter than about 3,000 hours when operated on its rating.
- 6. The lamp of claim 3, which exhibits a life expectancy not shorter than about 200 hours when operated at a voltage in the range of about 105-130% of its rating.
- 7. The lamp of claim 3, which emits a light with a color temperature not lower than about 2,900 K. when operated at a voltage exceeding its rating but not exceeding 150% thereof.
- 8. A lighting device comprising:
- an incandescent lamp as luminous source, said incandescent lamp enclosing a filling composition consisting of 20-75% by volume of xenon gas and 25-80% by volume of nitrogen gas, and having a rated wattage of 40-100 w; and
- a power source to operate said incandescent lamp, said power source being capable of operating said incandescent lamp at a wattage in the range of about 90-150 v.
- 9. The device of claim 8, wherein said incandescent lamp is operated at a voltage exceeding its rating but not exceeding 150% thereof.
- 10. The device of claim 8, where said power source comprises a rectifier circuit with smoothing means to convert ac into dc.
- 11. The device of claim 8, wherein said power source is of inverter type.
- 12. The device of claim 8, wherein said power source is of switching regulator type.
- 13. A lighting device comprising
- an incandescent lamp as luminous source, said incandescent lamp enclosing a filling composition consisting of 20-75% by volume of xenon gas and 25-80 by volume of nitrogen gas, wherein said incandescent lamp has an arc starting voltage not lower than 170% of its rating, and a rated wattage of 40-100w; and
- a power source to operate said incandescent lamp, said power source be capable of operating said incandescent lamp at a voltage in the range of about 90-150v.
- 14. The device of claim 13, wherein said incandescent lamp exhibits a life expectancy not shorter than about 3,000 hours when operated on its rating.
- 15. The device of claim 13, wherein said incandescent lamp exhibits a life expectancy not shorter than about 200 hours when operated at a voltage in the range of about 105-130% of its rating.
- 16. The device of claim 13, which emits a light with a color temperature not lower than about 2,900K when operated at a voltage exceeding its rating but not exceeding 150% thereof.
Priority Claims (2)
Number |
Date |
Country |
Kind |
3-103854 |
Apr 1991 |
JPX |
|
3-103855 |
Apr 1991 |
JPX |
|
Parent Case Info
This application is a continuation of application Ser. No. 07/848,518 filed Mar. 9, 1992, now abandoned.
US Referenced Citations (4)
Foreign Referenced Citations (11)
Number |
Date |
Country |
0262950 |
Sep 1987 |
EPX |
0242022 |
Oct 1987 |
EPX |
21226790 |
|
JPX |
54-2068 |
Jan 1979 |
JPX |
60-95850 |
May 1985 |
JPX |
61-193398 |
Aug 1986 |
JPX |
62-185516 |
Aug 1987 |
JPX |
62-211853 |
Sep 1987 |
JPX |
63-88792 |
Apr 1988 |
JPX |
63-136492 |
Jun 1988 |
JPX |
2212994 |
Aug 1989 |
GBX |
Continuations (1)
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Number |
Date |
Country |
Parent |
848518 |
Mar 1992 |
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