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High-pressure sodium lamp

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专利汇可以提供High-pressure sodium lamp专利检索,专利查询,专利分析的服务。并且PURPOSE:To obtain a long-life having easy starting-up property by setting up within a specific range the temperature of electrode, with an electron-radiating substance film consisting of an alkaline earth metal tungstate, Y2O3, and BeO or La2O3, at rated current. CONSTITUTION:The inside of the luminous tube 1 the periphery of which is wound with the starting-up auxiliary conductor 8 connected through the bi-metal switch 12 is filled with a buffering gas metal, sodium, and Xe of 100-500 Torr. And, the electrodes 3 provided at both ends are sheathed with an electron-radiating substance containing a tungstate of an alkaline earth metal including Ba at least, Y2O3, and at least one of BeO and La2O3 so that the temperature at rated current of the electrode 3 becomes 1200-1500 deg.C. The setting of the temperature is made by regulating the diameter of the core wire and the number of turns of tungsten coil.,下面是High-pressure sodium lamp专利的具体信息内容。

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