A lamp holder structure with a universal accommodating slot, comprising:
- a main body, including an accommodating space concavely formed at the bottom of the main body, and a universal accommodating slot concavely formed at the top of the main body;
- a first electrically conductive plate, installed at the top of the main body and at a position proximate to the universal accommodating slot, and an end of the first electrically conductive plate being extended to the bottom of the universal accommodating slot, and the other end of the first electrically conductive plate being provided for electrically coupling a first electric wire;
- a metal spring plate, embedded into the main body, and an end of the metal spring plate being extended into the accommodating space and the other end of the metal spring plate being extended into the universal accommodating slot, and maintaining a predetermined interval from an end of the first electrically conductive plate, and the other end of the metal spring plate being pressed by an external force to abut an end of the first electrically conductive plate or affected by a stress of the metal spring plate to detach from the first electrically conductive plate;
- a second electrically conductive plate, installed at a position at the top of the main body and proximate to the universal accommodating slot, and an end of the second electrically conductive plate being extended into the accommodating space of the main body, and the other end of the second electrically conductive plate being provided for electrically coupling a second electric wire;
- a lamp holder base, accommodated in the accommodating space, and the top of the lamp holder base being pressed against an end of the second electrically conductive plate and electrically coupled to the second electrically conductive plate, and an opening being formed on the lamp holder base for extending an end of the metal spring plate through the opening into the lamp holder base, and an assembling slot being concavely formed in the lamp holder base and provided for assembling a lamp cap of an illumination lamp;
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- a pressing element, accommodated in the universal accommodating slot, and rotatable or reciprocally movable in the universal accommodating slot, and having at least one pressing portion formed on the pressing element and rotatable or movable with the pressing element to press against a flange of the metal spring plate, such that the metal spring plate is electrically coupled to the first electrically conductive plate or detached from the flange of the metal spring plate to electrically disconnect the metal spring plate from the first electrically conductive plate.