| 摘要 |
The present invention relates to an LED street lamp that uses an LED as its light source and enables brightness to be increased for an entire area whereunto light is illuminated and enables brightness deviation to be minimized in the illuminated region; the LED street lamp of the present invention comprises a case that is furnished at the top end of a pillar, a substrate that is furnished within said case and mounts a plurality of LEDs separately from one another, and a heat radiation part that adheres to said substrate to radiate heat generated by illumination of said LEDs, wherein said plurality of LEDs have different brightness from one another, they are installed so that their brightness may increase gradually from the center part of said substrate to the edges of said substrate, and a scattering member that scatters light from said LEDs is furnished and formed in the area of said substrate corresponding to the gaps between said LEDs. The LED street lamp according to the present invention can effectively expand its illumination range and also prevent decrease in brightness by arranging and installing a plurality of LEDs with mutually different brightnesses on the concave or convex curved surface of the substrate and also installing them such that their brightness gradually increases from the center part of the curved surface to the edges. In addition, the brightness of the illumination range can also be effectively enhanced when a part of LED light is scattered between the LEDs by the scattering member and to prevent formation of blind spots between adjacent street lamps when the brightness does not decrease but its illumination range is expanded. Furthermore, illumination range can be expanded and decrease in brightness can be prevented when beam angles between LEDs are formed to gradually decrease from the center part to the edges although LEDs of the same brightness are mounted. |
