Knob-type light dimmer device

A light dimmer device, comprising:

• a housing;
• a circuit board disposed in the housing;
• a switch disposed in the housing and coupled to the circuit board, configured to control electrical connection or disconnection between the circuit board and a power supply;
• a trigger, partially disposed in the housing and partially exposed through an opening, the trigger being movable in response to an external force, configured to trigger or release the switch to control the electrical connection or disconnection between the circuit board and the power supply;
• an electrical connection matching component disposed in the housing and coupled to the circuit board;
• a first mounting match portion disposed in the housing;
• a knob assembly, which includes a base, a knob disposed on a first side of the base, and an electrical connection component disposed on a second side of the base opposite the first side, wherein the base includes a first mounting portion, wherein when the knob assembly is assembled into the housing, the first mounting portion cooperates with the first mounting match portion to affix the knob assembly to the housing and the electrical connection component cooperates with the electrical connection matching component to form electrical connection between the knob assembly and the circuit board;
• a second mounting match portion;
• and
• a face cover, which includes a second mounting portion, wherein when the face cover is assembled to the housing, the second mounting portion cooperates with the second mounting match portion to affix the face cover to the housing and to at least partially cover the base.