Coil device

A coil device according to one embodiment of the present invention is provided with: an element part provided with a core and a coil; a guide member that guides a lead wire of the coil; the pedestal is arranged on the circuit substrate perpendicular to the Z direction and positions the element part and the guide part relative to the circuit substrate, the guide part is provided with a columnar head part which is arranged on the core and extends in the Y direction perpendicular to the Z direction, and a guide groove which extends in the circumferential direction of the head part and guides the lead wire is formed in the outer circumferential part of the head part; and a curved rotary guide surface that extends in the circumferential direction of the head and guides the rolling or rotary sliding of the guide member on the core, the guide member being provided with a pressing part that presses the lead-out wire from the opposite side to the guide groove so that the lead-out wire does not come out of the guide gr