Low-voltage portable lighting source

The utility model discloses a low-voltage portable lighting source, which belongs to the field of lamps and comprises a lamp holder, a light source body is electrically connected to the lower portion of the lamp holder, two expandable shells are arranged on the outer side of the light source body, the upper portions of the two shells are rotatably connected with the lamp holder, and locking assemblies are arranged on the upper portions of the two shells. The shell is a hollow shell with an opening in one side, a platform part is arranged on the upper portion of the shell, semicircular cavities are formed in the middle of the platform part, semicircular holes are formed in the positions, close to each other, of the two semicircular cavities, and rotating rods rotationally connected with the lamp holder are fixedly connected to the positions, close to the semicircular holes, of the semicircular cavities. A protective cover is formed on the outer side of the light source body in the process of moving the light s