Thermal insulation structure of electric heater junction box

The utility model discloses a thermal insulation structure of an electric heater junction box in the technical filed of electric heaters, and the thermal insulation structure aims at solving the problems that in the prior art, due to the fact that an existing junction box is affected by heat conducted by an electric heater, the temperature in a box body is excessively high and the service life of cables in the box is short. The thermal insulation structure comprises the junction box and a shell, wherein a pipe plate is arranged at one end of the shell, a plurality of electric heating pipes are arranged in the shell, the junction box comprises a junction box bottom plate, a plurality of sleeves are connected between the junction box bottom plate and the pipe plate, the sleeves are arranged corresponding to the electric heating pipes one to one, the electric heating pipes penetrate through the inner portions of the sleeves and extend to the junction box, the outer side of the pipe plate is further paved with a