High-power LED a broad sense is a single LED light source power greater than 0.35W (including 0.35W) of.

Although a number of companies to develop production of LED street lighting cities, but many are small-power LED array as light, heat issue is resolved, the number used to be a lot of LED, low power LED light failure, high installation costs; urban lighting LED Using high-power LED street light is the development trend, a few high-power LED as the light emitting element lamp products because there is no good solution when a certain amount of power, LED thermal problems; LED astigmatism and condenser control issues; lights on the road Equilibrium irradiation surface illuminance range, patterns and illumination; photoelectric conversion efficiency is too low, only a few issues such as lumens per watt. Therefore, performance is not satisfactory; price and high performance products, it is difficult to popularize. Cooling and reliability are the main factors affecting the LED applications.

LED light source, there are two approaches, one is to use a combination of conventional low-power LED for general up to hundreds, even hundreds of pieces, power supply design complexity. Another is to use high-power tube as the light source, the price is more expensive. Both methods are inevitable to thermal design and operational reliability as the main design considerations apply to many domestic government demonstration project, the project truly market-oriented operation small, foreign applications are more examples of this, but it The biggest drawback is still the reliability, light lumens and prices, many of the works due to the poor quality LED, no good demonstration of the advantages of long life. In addition, from the cost, the market point of view, LED as a light source, which is used in conjunction with solar energy, the design needs to take a different route, is not alone as a light source can be done to develop.

LED device products applied to the lights, special technology is mainly required to combine LED light intensity and light angle design, the other due to the combination of multiple LED, light design should take into account the irradiated surface domains, consider the heat lamps need to focus on aspects of effective sex.

Comparative advantages of LED lights with ordinary lights: energy saving, environmental protection, easy and low-voltage adapter, can also be directly supporting and solar systems, the need for additional inverters, the conversion process, to achieve maximum energy efficiency.

Inadequate: illumination angle small, uniform, low color development index, optical, thermal design complexity.

Technical deficiencies: under current technology is not enough flux, luminous efficiency is too low, the quality is not guaranteed.

Remedy: LED lights require specialized products used in design, but also requires special criteria (with test data to evaluate the traditional light LED light source is often not objective).

LED used in street lights have inherent advantages and disadvantages. The advantages: First, LED as a light source, if properly designed, can largely solve the second problem takes light and the optical loss must rely on traditional spherical light emitting source to solve; second, uniform light irradiation surface the degree of control, in theory, can be completely uniform in the target area, which can avoid the traditional light "lamp light" phenomenon in the light waste; third, color temperature, so that the application of different occasions, and also improve efficiency, cost reduction is an important way; fourth, technology is still great room for improvement.

Weaknesses (impact factors promote the use of lights): The current price is still too high, the flux is low, the current design of the same illumination LED light source is equivalent to about four times the price of traditional light sources (but in street lighting products, light source portion of the total cost is not high , the cost of increasing the proportion of the project installation is not too high, space applications is quite large), the unbearable civilian. The current design and manufacturing standards a bit confusing, the proportion of high damage, affecting the life of the LED advantage.