Voltage stabilizer with good heat dissipation effect

The utility model discloses a voltage stabilizer with a good heat dissipation effect, which comprises a base, a bearing seat is arranged above the base, guide columns are sleeved on the periphery of the bearing seat, the bottom ends of the four guide columns are fixedly connected with the top end of the base, springs are arranged on the outer surfaces of the four guide columns and are positioned below the bearing seat, and the top end of the bearing seat is fixedly connected with the top end of the base. A voltage stabilizer box body is fixedly connected to the top end of the bearing seat, a box door is hinged to one end of the voltage stabilizer box body, a temperature detection assembly is arranged on one side of the interior of the voltage stabilizer box body, by arranging the temperature detection assembly and rotating a rotary knob, a second conical tooth of the rotary knob drives a first conical tooth to rotate, and then a screw block moves up and down on the outer surface of a screw rod; the temperatur