GLASS STEM FOR HIGHLY WATERPROOF LED FILAMENT LAMP AND LAMP BULB
A glass stem for a highly waterproof LED filament lamp comprises an LED filament without being driven by external power, a glass flare tube, an exhaust tube, a first lead wire having a resistance element, and a second lead wire. The first lead wire is placed in the exhaust tube. The first lead wire,...
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Format: | Patent |
Sprache: | eng |
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