Pressure relief type die-casting junction box

The utility model discloses a pressure relief type die casting junction box which comprises a junction box body and a junction box cover, the junction box cover is hinged to the junction box body, a plurality of heat dissipation ribs are fixed to the outer wall of the junction box cover and the outer wall of the junction box body respectively, and each heat dissipation rib comprises a transverse rib and a vertical rib. The junction box comprises a junction box cover, a pressure relief hole is formed in the junction box cover, a threaded cylinder is arranged on the pressure relief hole, a pressing cylinder is in threaded connection with the interior of the threaded cylinder, a pressure relief membrane is pressed on the pressure relief hole through the pressing cylinder, and the pressure relief hole is located below a transverse rib and a vertical rib which are crossed. The die-casting junction box is simple in structure, pressure relief can be conducted in time if the pressure of the junction box is too large,