A gas lighting device for an electric household appliance, in particular a cooking range, comprising: a body formed by an electrically insulating material and carrying a plurality of high-voltage outputs for the connection to spark generating means; a transformer accommodated in the body and in turn comprising a primary winding wound about and carried by a ferromagnetic material core, a carrying element formed by an electrically insulating material and designed to contain the primary winding therein, and a secondary winding consisting of a plurality of coils externally carried by the carrying element, electrically insulated from the primary winding and essentially coaxial with the latter; the core being accommodated within the carrying element and thus being surrounded by said windings (11;15); wherein i) said carrying element comprises a drum arranged coaxial to said windings (11;15) and supporting the same and said high-voltage outputs, which are integrally obtained with said drum so as to form therewith said carrying element and laterally overhangingly protrude from the drum; ii) said body formed by electrically insulating material is cup-shaped so as to define an internal concavity provided with a mouth through which it receives in said concavity said carrying element with said primary and secondary windings (11;15) and said core pre-mounted on the same; iii) said high-voltage outputs each comprise: a corresponding electric terminal; a corresponding electrically insulating support for the electric terminal integrally obtained in one piece with the drum; iv) said concavity is filled with an electrically insulating resin, so as said carrying element, said windings (11,15) and said core are embedded therein together with also most part of the high-voltage outputs, which protrudingly surfacing from the resin, so as to be overhangingly protruding out from said resin; characterised in that, in combination: v) each said high-voltage outputs further comprise a prismatic tubular element adapted to accommodate said electric terminal therein; vi) said carrying element is accommodated within said concavity with said prismatic tubular elements facing towards the outside of said concavity and protruding outwards from the same through said mouth; vii) said supports for the electric terminals are obtained at opposite ends of said drum, on both sides of the same; opposite ends of each said coil belonging to the second winding being electrically connected in a direct manner to the corresponding electric terminals of said high-voltage outputs, viii) said terminals are adjacent to a same end of the coil, so as to obtain a symmetric arrangement with respect to the core and to a symmetry axis of the core and of the windings (11,15). i) said carrying element comprises a drum arranged coaxial to said windings (11;15) and supporting the same and said high-voltage outputs, which are integrally obtained with said drum so as to form therewith said carrying element and laterally overhangingly protrude from the drum; ii) said body formed by electrically insulating material is cup-shaped so as to define an internal concavity provided with a mouth through which it receives in said concavity said carrying element with said primary and secondary windings (11;15) and said core pre-mounted on the same; iii) said high-voltage outputs each comprise: a corresponding electric terminal; a corresponding electrically insulating support for the electric terminal integrally obtained in one piece with the drum; iv) said concavity is filled with an electrically insulating resin, so as said carrying element, said windings (11,15) and said core are embedded therein together with also most part of the high-voltage outputs, which protrudingly surfacing from the resin, so as to be overhangingly protruding out from said resin; characterised in that, in combination: v) each said high-voltage outputs further comprise a prismatic tubular element adapted to accommodate said electric terminal therein; vi) said carrying element is accommodated within said concavity with said prismatic tubular elements facing towards the outside of said concavity and protruding outwards from the same through said mouth; vii) said supports for the electric terminals are obtained at opposite ends of said drum, on both sides of the same; opposite ends of each said coil belonging to the second winding being electrically connected in a direct manner to the corresponding electric terminals of said high-voltage outputs, viii) said terminals are adjacent to a same end of the coil, so as to obtain a symmetric arrangement with respect to the core and to a symmetry axis of the core and of the windings (11,15).