Double chamber arc tube for high intensity discharge lamp
阅读：299发布：2021-10-28
专利汇可以提供Double chamber arc tube for high intensity discharge lamp专利检索，专利查询，专利分析的服务。并且The arc tube of a high intensity arc discharge lamp has a double chamber section in order to increase lamp efficiency by improving the convective flow pattern within the arc tube during normal lamp operation.，下面是Double chamber arc tube for high intensity discharge lamp专利的具体信息内容。
1. A high intensity arc discharge lamp comprising an elongated, double chamber arc tube, said arc tube containing an electricdischarge-supporting fill and having electrodes at its ends, the shape of the arc tube being such that during normal operation of the lamp in a position having a vertical component, upward convection flow of the gaseous and vaporized arc tube fill occurs within one chamber of the arc tube and downward convection flow occurs within the other chamber, the arc discharge being confined in said one chamber and being excluded from said other chamber.
2. The lamp of claim 1 wherein said fill includes mercury and an inert starting gas.
3. The lamp of claim 1 wherein said fill includes mercury, metal halide and an inert starting gas.
4. The lamp of claim 1 wherein the double chamber of the arc tube is provided by a longitudinal baffle disposed therein.
5. The lamp of claim 1 wherein the double chamber of the arc tube is provided by an interior tube disposed therein, the length of said interior tube being less than the arc length of the arc tube.
6. The lamp of claim 1 wherein the double chamber is provided by a side tube spaced from but parallel to the arc tube and joined thereto at its ends.
7. A high intensity arc discharge lamp comprising an elongated, double chamber arc tube containing an electric-discharge-supporting fill and having electrodes at its ends, the shape of the arc tube being such that during normal operation of the lamp in a position having a vertical component, upward convection flow of the gaseous and vaporized arc tube fill occurs within one chamber of the arc tube while downward convection flow occurs within the other chamber and the arc tube is at a minimum predetermined cold spot temperature, the arc discharge being confined in said one chamber and being excluded from said other chamber.
8. The lamp of claim 7 wherein said fill includes mercury and said minimum cold spot temperature is sufficient to vaporize all the mercury.
9. The lamp of claim 8 wherein said fill also includes metal halide and said minimum cold spot is sufficient to vaporize an effective amount of metal halide.
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