High-voltage sodium lamp and internal trigger therefor

The utility model relates to an inner-trigger high-voltage sodium lamp, which belongs to the technical field of an inner trigger used by the inner-trigger high-voltage sodium lamp. The inner trigger of the high-voltage sodium lamp of the utility model comprises an insulator 11 and a bimetal sheet 4, wherein the insulator 11 forms a step type and all glass enamel welding spots are on the same direction. The inner trigger of the utility model makes all glass enamel welding spots designed on the same plane, optimizes the structure, only needs one-time burning enamel, simplifies the factory processing operation and enhances the production yield.