Semiconductor lighting device

The utility model relates to a shell, two ends of the shell are provided with openings, and an optical module, a light source module, a driving electronic module and a heat treatment module are contained in the shell. The optical module is arranged on a central shaft in the shell, and the top of the optical module is connected with the front end of the shell. The light source module is arranged at the bottom of the optical module and emits light towards a front end opening of the shell. The driving electronic module is bound on the outer wall of the optical module, and the heat treatment module is placed at the bottom of the light source module and seals a rear end opening of the shell. The semiconductor lighting device takes the optical module as a stand column to bear acting force from the two ends of the shell and the heat treatment module, so that the semiconductor lighting device is firm and not prone to being damaged due to collapse caused by overlarge pressure from the outer side of the semiconductor l