Filling composition for incandescent lamp, and incandescent lamp containing the same and its use
First Claim
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1. A filling composition for incandescent lamp, consisting of 20-75% by volume of xenon gas, and 25-80% by volume of nitrogen gas.
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Abstract
A filling composition consisting essentially of about 20-75% by volume of xenon gas and about 15-80% by volume of nitrogen gas exhibits excellent luminous characteristics and an extended life expectancy but hardly causes arc discharge when enclosed in incandescent lamp. Incandescent lamps using the filling composition emit a light which is natural, appropriately high in color temperature, excellent in color rendering properties and gentle to the eye when operated at a voltage exceeding their rating but not exceeding 150% thereof.
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Citations
16 Claims
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1. A filling composition for incandescent lamp, consisting of 20-75% by volume of xenon gas, and 25-80% by volume of nitrogen gas.
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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.
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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. - View Dependent Claims (4, 5, 6, 7)
- and has an operating voltage of about 90-150v and a rated wattage of 40-100w;
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8. A lighting device comprising:
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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. - View Dependent Claims (9, 10, 11, 12)
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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. - View Dependent Claims (14, 15, 16)
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Specification