Illumination device

An illumination device comprising:

• a light tube holder comprising:
• a base;
• a light-emitting diode (LED) tube drive circuit board mounted in the base;
• a fluorescent tube drive circuit board mounted in the base;
• a pair of connectors arranged at opposite ends of the base for selectively receiving one of a fluorescent tube or an LED tube, the fluorescent tube comprising two conductive pins arranged on one end thereof and another two conductive pins arranged on an opposite end thereof, the LED tube comprising two conductive pins arranged on each end thereof, and the two conductive pins arranged on each of opposite ends of the LED tube being connected with each other;
• wherein each of the pair of connectors comprising:
• a retainer defining a though hole;
• a rotary member rotatably received in the through hole, and defining a first groove to receive two pins on one end of one of the tubes;
• and
• four elastic pieces positioned in the retainer around the through hole, the four elastic pieces comprising a first elastic piece, a second elastic piece, a third elastic piece and a fourth elastic piece, and the first elastic piece and the second elastic piece electrically connecting with the LED tube drive circuit board, and the third elastic piece and the fourth elastic piece electrically connecting with the fluorescent tube drive circuit board;
• wherein when the rotary members of the pair of connectors are rotated to a first position, the two pins on each end of one of the tubes stay in contact with the first elastic piece and the second elastic piece of each of the pair of connectors, and wherein when the one of the tubes is the LED tube, the LED tube is driven by the LED tube drive circuit board;
• and
• when the rotary members of the pair of connectors are rotated to a second position, the two pins on each end of one of the tubes stay in contact with the third elastic piece and the fourth piece of each of the pair of connectors, respectively, and wherein when the one of the two tubes is the fluorescent tube, the fluorescent tube is driven by the fluorescent tube drive circuit board.