Patent ID: 8322301

Claim:
An electrostatic coating device comprising: a coating medium supply portion; a coating medium supply passage for supplying a conductive coating medium from the coating medium supply portion to a spray gun; a reserve portion disposed in the coating medium supply passage and for temporarily storing the conductive coating medium; an insulation portion for electrically insulating the coating medium supply portion and the reserve portion; a switch valve disposed in the coating medium supply passage between the reserve portion and the spray gun; and a fluid supply portion for supplying water or a cleaning solution to the coating medium supply passage through the switch valve, wherein the fluid supply portion includes: a cleaning valve for controlling a supply of the water or the cleaning solution; a block valve mechanism connected to the cleaning valve and having an insulation conduit line; a reserve tank connected to the block valve mechanism; and a transmission passage for connecting the reserve tank and the switch valve, wherein the insulation conduit line electrically insulates the cleaning valve from the coating medium supply portion.