Track system of projector lamp and electrical connection device assembly thereof

A track system of projector lamp and electrical connection device assembly thereof, comprising:

• at least a track unit, an end side of a track seat being defined as a common electrode end side for grounding purpose, on two longitudinal end sides of the track seat respectively having a first power supply circuit connection system and a second power supply circuit connection system;
• at least one projector lamp, having an electrical connection device at an end thereof;
• an electrical connection device, at a front of a connector head being an extension of two electrode insert plates and a grounding electrode, for electrical connection with one selected power supply circuit connection system, in coordination with a snap fastener that can be rotated for drive and control to fasten a corresponding track unit in place;
• what can be obtained under said single track unit structure includes two composite power supply circuit connection systems and an electrical connection assembling environment, providing more projector lamps with their ends installed with electrical connection devices, corresponding to a selected power supply circuit connection system, the electrical insert plates corresponding to the electrode set of the selected power supply circuit connection system for insertion and electrical connection, said grounding electrode being connected with a common electrode end side of the track unit, with the snap fastener fastened to a fastening groove, to obtain electrical connection device being fastened in the track unit, for electrical connection with a power supply circuit connection system, under the single track unit structure, these assembled plurality of projector lamps being respectively assembled to the two power supply circuit connection system, dividing and defining the projector lamps into two on/off control groups, for respective on/off control or simultaneous on/off control.