Lamp holder structure for lamp-tubes in serial connections

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.