Patent ID: 8243416

Claim:
A gas lighting device, comprising: a body formed by an electrically insulating material and carrying a plurality of high-voltage outputs for connection of spark generating units; a transformer accommodated in the body and including a ferromagnetic material core, a primary winding wound about and carried by the ferromagnetic material core, a carrying element formed by an electrically insulating material and containing the primary winding therein, and a secondary winding including a plurality of coils externally carried by the carrying element, electrically insulated from and coaxial with the primary winding, wherein said ferromagnetic material core is ring-shaped on a plane parallel to an axis of said windings and includes first and second half rings reciprocally coupled and arranged facing and closely adjacent to each other in the direction of the axis of said windings; a first circumferential portion of the core, formed by the first half ring or both the half rings, is accommodated inside the carrying element and surrounded by said windings, a second circumferential portion of the core, formed by the second half ring or both the half rings and away from the first circumferential portion, is arranged parallel to the first circumferential portion and radially on the outside of both said primary and secondary winding, so as not to be surrounded by said windings, said carrying element includes a drum coaxially arranged with said windings and supporting the windings, said high-voltage outputs each includes an electric terminal, and an electrically insulating support for the electric terminal, the electrically insulating support being integrally formed in one piece with the drum; and the electrically insulating supports for the electric terminals are formed at opposite ends of said drum, on both sides of each of said ends.