| 摘要 |
A connecting element of a multi-sectional lamp tube comprises a locking ring, a mounting joint, a threaded tube, and a fixing ring. The locking ring has a hollow bottom end and a though hole. Two sides of the through hole of the locking ring are installed with respective slots. A stopper is formed at a side of the through hole. Each of the two sides of the top ring has the buckling blocks. The buckling blocks pass through the slots of the locking ring. Then, the mounting joint is rotated and is gradually tightened against a ramp surfaces of the locking ring so as to resist against the stopper. An upper lamp tube is welded at an outer periphery of an assembled locking ring and a lower map tube is welded at an outer periphery of the fixing ring.
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