Tube lamp

A tube lamp, comprising:

• a mounting box;
• a lamp body matched with the mounting box, the mounting box comprising a top plate and side wall boards around the top plate;
• a fixed board comprising a fixed board body;
• and
• at least two sets of fasteners disposed along a longitudinal direction of and at each end of the fixed board body;
• wherein:
• the fasteners are interspaced;
• the fixed board is detachably connected to the mounting box through the fasteners;
• the lamp body is connected to the mounting box through the fixed board;
• the fixed board body further comprises a middle snap joint base;
• the lamp body is provided with snap joints, the snap joints being matched with the snap joint base;
• the top plate and the side wall boards form an accommodating cavity;
• the snap joints are in snap-fit with the snap joint base in a vertical direction, and the snap joints are received in the accommodating cavity;
• the snap joint base is a round through-hole formed on the body;
• and
• a metal spring plate comprises a bottom plate and a first side plate and a second side plate which are disposed at two ends of the bottom plate, lower ends of the first and second side plates respectively extend from the bottom plate and away from each other, upper ends of the first and second side plates extend toward each other, and the snap joints are respectively formed between the lower and upper ends of the first and second side plates.