PURPOSE: To prevent accumulation of an electric charge through friction with a pulverulent body in a powder painting device, by applying a conductive molded product of thermo-plastic resin to a portion contacted with the pulverulent body.

CONSTITUTION: A device is constituted by a powder coating hopper 2, ejector pump, successively formed to the hopper and comprising a nozzle 4 and diffuser 6, conveying hose 8 and painting device 10. In this device, a thermo-plastic resin molded product containing 10 150PHR graphite or carbon black is applied to a place easy to generate static electricity by friction with a pulverulent body, and the static electricity in the device can be removed, then the pulverulent body is prevented from solidification and security due to the static electricity thus can be safely conveyed.