Led headlight

Abstract

An LED headlight includes a base plate and a heat sink, wherein the LED lamp bead arranged on the base plate, wherein the base plate is fastened on the heat absorption surface, wherein a light guide column is disposed on a luminous side of the LED lamp bead, wherein the light guide column has a light incident surface and a light emitting surface, wherein a reflection head is arranged at one end of the light guide column opposite the light incident surface, wherein the light emitting surface is arranged at an outer periphery wall of the one end of the light guide column corresponding to the reflection head, wherein the light incident surface is arranged towards the luminous side of the LED lamp bead, wherein a rear house is mounted on the assembly surface, wherein a concave first cavity is defined at one end surface of the rear house opposite the assembly surface, wherein a heat dissipation fan is arranged in the first cavity, wherein the air outlet side or the suction side of the heat dissipation fan faces the assembly surface, wherein an air flowing opening communicated with the first cavity is arranged at the rear house. Compared with the prior art, the present utility application achieves transmitting lights by the light guide column, which changes the direction and distribution of the lights, so as to achieve the same luminous position and light uniform distribution in 360°, wherein the service life and the heat dissipation are safer and more reliable.