High voltage sodium lamp
专利汇可以提供High voltage sodium lamp专利检索，专利查询，专利分析的服务。并且PURPOSE: To make the promotion of improvement of the reliability for unsaturated vapor pressure type lamp in a simple method, by coating to install a prescribed thermal insulator to outer face of the luminous tube end part, as well as by specifying the amount of sodium and mercury, to be filled in the luminous tube, to a slight amount.
CONSTITUTION: In the interior of a light permeable alumina tube 1, having an electrode 4, 4' made of W in the inside end part, are sealed Na of 0.007W0.071mg and Hg of 0.054W0.9mg per 1cm
3 of its internal volume. And to the outer face of end part of the luminous tube 1, is tightened a metal band 6 as a thermal insulator through a heat-proof buffer material 5. For sealing the above described slight amount of Na, a sealed material vessel, with a prescribed amount of NaN
3 solution filled and the solvent vaporized, is installed in a portion linked to within the luminous tube, with this part heated in inactive ambience or in vacuum to cause thermodecomposition. And to seal the mercury, a prescribed amount of Al-Zr-Hg alloy is placed in the sealed material vessel, then with this vessel linked to within the luminous tube, and heated in the vacuum to make the mercury separated.
COPYRIGHT: (C)1980,JPO&Japio，下面是High voltage sodium lamp专利的具体信息内容。
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