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High pressure sodium vapor lamp

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专利汇可以提供High pressure sodium vapor lamp专利检索,专利查询,专利分析的服务。并且PURPOSE: To prevent scattering of charge and to improve lamp and life properties of the high pressure sodium vapor lamp which has no exhaust pipe and is lighted with low power, by specifying the length of luminous tube bulb and amount of sodium charged in the bulb relative to the amount of amalgam.
CONSTITUTION: Both ends of the luminous tube bulb are sealed with niobium caps 4a which have no exhaust pipe, and the caps are bonded with glass solder 11 which comprises mainly aluminum oxide and magnesium oxide. The total length of the bulb is more than 40mm, the amount of the sodium-mercury amalgam charged in the tube 3 is more than that vaporize during lighting, and amount of sodium charged limitted to 7W15% by weight of amalgam. Thus the lamp voltage can be maintained high, lamp power efficiency is improved, and a lamp with long life can be obtained.
COPYRIGHT: (C)1980,JPO&Japio,下面是High pressure sodium vapor lamp专利的具体信息内容。

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