High pressure sodium lamp
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United States of America Patent
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May 28, 2013
Grant Date -
Nov 15, 2012
app pub date -
May 9, 2011
filing date -
May 9, 2011
priority date (Note) -
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Abstract
A high pressure sodium lamp includes a lamp base, a light admissible housing and a sodium vapor illumination arrangement, which includes a light core extended from the lamp base into the light admissible housing; a supporting frame, and an arc tube. The supporting frame longitudinally extends in the light admissible housing, and has an upper end portion supported by an upper portion of the light admissible housing, and a lower end portion supported by the light core. The arc tube has a first and a second electrode formed at two ends thereof and electrically connected with the upper end portion of the supporting frame and the light core respectively, wherein sodium vapor in the arc tube is electrically excited to discharge light having an intensity equivalent to that generated by more than 1000 W power.
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