<p>PURPOSE: A street light is provided to offer the effect of enlightening wider area by modifying the radiation angle of the light according to the movement by detecting the moving path of a pedestrian. CONSTITUTION: A CCTV(160) is installed on a head unit(120) or a stand(110) and records the current situation. An infrared detector(170) is installed to detect a pedestrian. A driving unit(140) is installed between a supporting member and a head. The driving unit modifies the radiation angle of the light according to the moving path of the pedestrian detected by the infrared detector.</p>
