Metallic button assembly and control body assembly employing same and smoke ventilator employing control body assembly

The utility model discloses a metallic button assembly and a control body assembly employing same and a smoke ventilator employing the control body assembly. The metallic button assembly comprises an electric light, a switch, a transparent button body, a transparent lampshade outside the transparent button body and provided with a hollow-out portion, and a light transmissible sealing member which is at least partially embedded in the hollow-out portion of the lampshade. The control box assembly comprises a circuit board and the metallic button assembly, wherein the electric light and the switch are arranged on the circuit board, the electric light is arranged on the central section of the switch, and a lighting loop matching with an installing hole is arranged on the periphery of the switch. The utility model further provides a smoke ventilator employing the control box assembly. In the metallic button assembly, a light-transmissible hollow-out portion arranged in the lampshade improves the light transmission