Patent ID: 8282408

Claim:
A lamp holder structure for lamp-tubes in serial connections, the lamp holder structure assembled with a lamp-tube having conducting terminals and including: a base body including a via hole, the via hole including a longitudinal opening; two electrode plates arranged inside the base body, the electrode plate including at least a first contact part around the via hole; a rotary shaft including a barrier plate, the barrier plate having a shaft part in the via hole, the shaft part and the barrier plate having a longitudinal gap; and a short-circuit part assembled with the shaft part, wherein the conducting terminals of the lamp-tube are arranged in the longitudinal gap through the longitudinal opening; the shaft part of the rotary shaft is rotated by rotating the lamp-tube, so that the conducting terminals of the lamp-tube are electrically contacted with the two first contact parts; wherein before rotating the lamp-tube, the short-circuit part is electrically contacted with the two electrode plates; after rotating the lamp-tube, the short-circuit part is electrically contacted with one of the two electrode plates, and wherein the electrical connection between the two electrode plates is achieved by the lamp-tube; after rotating the lamp-tube again, the short-circuit part is electrically contacted with the two electrode plates, so that the two electrode plates are electrically contacted, and the power is transmitted to the next lamp holder structure.