Single-pull telescopic light-emitting data line

A single-pull telescopic light-emitting data line comprises a shell, a winding part, a first wire rod and a second wire rod, the shell is made of light-transmitting materials, a cavity is formed in the shell, the winding part is rotatably arranged in the cavity, a conductive plate is arranged at the upper end of the winding part, a circuit board is arranged on the side, opposite to the conductive plate, in the cavity, a light-emitting part is arranged on the circuit board, and the circuit board is electrically connected with the conductive plate. A limiting assembly used for limiting rotation of the winding part to achieve positioning is further arranged in the cavity, the first wire and the second wire are located on the two sides of the shell respectively, one end of the first wire penetrates into the cavity to be electrically connected with the circuit board, one end of the second wire penetrates into the cavity and is wound on the winding part, and after the exposed end of the first wire is powered on, th