Vehicle vehicle-mounted cigar lighter with protection device

The utility model discloses a vehicle vehicle-mounted cigar lighter with a protection device. When a bimetallic strip of an existing cigar light cannot eject a heating part, the temperature is excessively high, and a motormeter may be burned to be damaged. A guiding and positioning pipe is arranged on a connection rod in a sleeved mode, and the tail portion of the connection rod is fixedly connected with a draw knob. One end of a resistance wire is embedded into a kerf of the head part of the connection rod, and the other end of the resistance wire is fixed to the inner wall of a resistance seat. A bimetallic strip is embedded into a groove in a ceramic seat which is supported by a ceramic seat supporting block of a shell. The resistance seat is arranged on the top of the bimetallic strip. A shell connection insertion piece installation block on the top of a shell connection insertion piece penetrates into a shell connection insertion piece installation hole from the bottom of the shell, and a plastic seat installation block on the top of a plastic seat is embedded into a plastic seat installation hole in a circuit module. A wiring piece is arranged at the bottom of the plastic seat, a wiring seat is arranged at the bottom of the wiring piece, and a clamp nut tightly presses the wiring seat. According to the vehicle vehicle-mounted cigar lighter with the protection device, when the bimetallic piece cannot eject the resistance seat, a circuit is forcefully opened through the circuit module, and safety of the cigar lighter and the motormeter is guaranteed.