Modular driver for illumination and having driver head cartridge

A modular driver for illumination and having a driver head cartridge, comprising:

• a grip of a hollow tubular shape, the front end of the grip having a coupling portion for fitting with a driver head, the grip being formed with a connecting portion at the end of the grip, at least the front end of the grip being made transparent, a through opening being provided at a position of the grip adjacent to the front end of the grip, the through opening being configured for passage of an actuating button;
• an inner frame exactly contained within the grip, the rear end of the inner frame being sequentially concavely provided with a plurality of recesses configured for storage of different driver heads, one side at the front end of the inner frame defining an assembly section, the opposite side of the assembly section defining a battery containing section;
• a circuit board mounted on the assembly section of the inner frame, an LED lamp, an actuating switch and a power supply pin being integrated on the circuit board, wherein the LED lamp is disposed toward the front end of the grip, the actuating switch and the actuating button are disposed with respect to each other, and the power supply pin runs through the assembly section and is located in the battery containing section;
• and
• a rear cap correspondingly coupled to the connecting portion at the end of the grip, the end surface of the rear cap being provided with a through hole, the rear cap being turned so that the through hole is disposed with respect to one of the recesses.