Electrodless globe florescent lamp with high luminant efficiency
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United States of America Patent
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Jan 3, 2012
Grant Date -
Oct 15, 2009
app pub date -
Jun 10, 2009
filing date -
Mar 24, 2008
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention comprises a globe shield and an inner disposed inside the shield, between which a low-pressured plasmic arc discharging zone is enclosed. Further, a glass division device near the inner in the discharging zone is coated with fluorescent powder on the surface thereof and is formed by glass or sheet glass having at least one opening defined on the glass to ensure the passage of air. The present invention advantages preferable ruminant efficiency as 15 to 20% higher as that of the conventional products, increasing the thermal resistance between the high-temperature circular discharging zone of the plasmic arc and the power coupler to decrease the heat generated by the corresponding radiation conduction for the inner, so that a large power is enabled by the present invention, accomplishing a performance of 200-300 W of the lighting power, and attaining a 75-85 Lm/W of the ruminant efficiency.
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