To provide a lighting device equipped with a task light to illuminate a desktop capable of securing a high degree of freedom in an installation place while maintaining stability and strength.

A lighting device comprises left and right poles 1 having base plates 4 placed on a floor and a wide task light 3. The task light 3 includes a metal-made body 35, which is height-adjustably connected with the left and right poles 1. Since the lighting device is a floor standing type, it can be installed in any place. Moreover, the task light 3 is functioned as a reinforcing member so that high stability and strength can be secured without providing extra reinforcing members, such as a horizontal bar.