Ignition coil device for internal combustion engine

摘要

According to this invention, a coil assembly of an ignition coil device in which a core and primary and secondary coils are unitarily molded by an insulating molding material is provided with a through hole so that the rotary shaft of a distributor or the like in which the ignition coil device is assembled can penetrate through the ignition coil device in a direction perpendicular to the main magnetic fluxes of the coils.