发明授权
US5994823A High-pressure discharge lamp, turning-on circuit device, and lighting fixture 失效
高压放电灯,接通电路装置和照明灯具

High-pressure discharge lamp, turning-on circuit device, and lighting
fixture
摘要:
A high-pressure discharge lamp includes an external tube, and two luminescent tubes which extend in the tube axis direction in such a manner that one tube twists with respect to the other or vice versa and which are close to each other at least at one end of each tube and are more separate in the middle of the tubes than the ends close to each other.
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