LED tube lamp

An LED tube lamp, comprising:

• a glass lamp tube comprising a main body and two ends;
• two end caps, each of the two end caps coupled to a respective end of the glass lamp tube, at least one of the end cap comprising a fixing portion and a locking portion disposed inside the end cap, the fixing portion fixed to the end cap and the locking portion disposed at an end of the fixing portion;
• an LED light strip adhered to an inner circumferential surface of the glass lamp tube by an adhesive, the LED light strip comprising a mounting region and a connecting region, the connecting region being at an end of the LED light strip;
• a plurality of LED light sources mounted on the mounting region;
• a diffusion layer covering on a surface of the glass lamp tube;
• a protective layer disposed on a surface of the LED light strip;
• and
• a power supply module comprising a circuit board separate from the LED light strip and a plurality of electronic components mounted on the circuit board, the circuit board disposed in one of the end caps and being substantially parallel with an axial direction of the glass lamp tube and electrically connecting to the connecting region,
• wherein the circuit board is inserted into the fixing portion and is clamped by the locking portion;
• wherein the end cap comprises an end surface portion and two conductive pins extending through the end surface portion, and wherein the locking portion, having a protrusion shape, is positioned at a distal end of the fixing portion close to the end surface portion of the end cap.