glare free led street light

Abstract

The invention relates to a technique of using light-emitting diodes (LEDs) to perform road lighting and a design of LED street lamp structures and discloses a glare-free LED street lamp. According to the glare-free LED street lamp, small-angle light beam projection and corrugation of the edge of a lamp shade are adopted, a design of butterfly-shaped light distribution forming a short cut angle replaces an LED light design of enhancing bat-shaped distribution in the prior art. The lighting range of the glare-free LED street lamp is limited in a lighting road section (namely the road section between two roads) occupying two thirds of two sides close to the lamp, light radiation of the glare-free LED street lamp is not thrown to far ends, and therefore the street lamp arranged in the mode cannot generate glares to vehicle drivers. The range of incidence angles irradiated to the ground is small so that coefficient change of ground brightness is far lower than that of the illuminating lamps in the prior art. The glare-free LED street lamp supplies uniform traveling ground surface view to the drivers and ensures safe driving of vehicles.

Description

technical field [0001] The invention relates to the technology of adopting LEDs for road lighting and the structural design of LED street lamps. Background technique [0002] Due to low energy consumption and long service life, LED (light-emitting diode) has been widely recommended for road lighting in recent years. In China alone, more than 3,000 patent applications involving LED street lamps have been filed. In order to promote the development of LED lighting, the national government launched the "Ten Cities, Ten Thousand Lamps" pilot plan in 2008 to encourage various manufacturers and R&D units to develop road lighting. [0003] Because the power of a single LED light-emitting chip is very low, but the power required by road lighting lamps is very large, all street lamp devices require multiple LEDs to be combined and installed in one lamp device. At the same time, due to the special situation of road lighting, the design of street lamps requires that the light emitted b...

AI Technical Summary

Problems solved by technology

As a result, if the near end can meet the coverage of the road surface, a large amount of light spillage will occur at the far end. If the LED beam angle is small, the illumination range at the near end will be relatively small. At the lower end of the LED, the beam will be can't fill the road

Even if the existing technology has carried out the light intensity enhancement in the wing area in the length direction of the road surface, it cannot solve the problem of lateral diffusion and overflow

[0008] In addition, there is still a very serious deficiency in the existing technology, that is, each technology is designed for a certain characteristic or suitable for a certain type of road, and the structure lacks the flexibility to adjust the light distribution. The same lamp design, not suitable for different paths

Although some technically provide an adjustable range, the mechanical and electronic drivers are structurally designed as a whole, and local adjustments cannot be made, because in fact it is still a solution for one lamp.

Moreover, these designs can only be replaced as a whole once a part of the LED is damaged.

This kind of overall fixed design, different people have different opinions and wisdom, and a hundred schools of thought contend, it is difficult to standardize parts and components

Therefore, there is no basis for standardized large-scale production, so it is impossible to obtain large-scale promotion and application

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