How to evaluate the lighting quality and energy saving effect of LED street lamp

LED street is the essence of road lighting products

Wu Chunhai said that in fact, the essence of LED street lighting products, LED street lamp lighting effect is more than 80lm/w, the application space has been opened, energy saving is a natural thing, energy saving is no longer the most important consideration. LED street lamps should pursue a more fundamental meaning, and return to the final positioning of its road lighting products. Wu Chunhai believes that low-carbon energy is important, lighting quality is more worthy of attention. Only under the premise of reaching a certain lighting quality, the energy saving effect of LED street lamp is meaningful. LED street lamp must balance between lighting quality and energy saving effect.

How to evaluate the lighting quality and energy saving effect of LED street lamp?

Lighting quality and energy efficiency evaluation of LED street lamp mainly according to the road lighting design standard CJJ45-2006, including average illuminance, illumination uniformity, luminance longitudinal uniformity, glare, environment ratio, power density index. Focus on the lighting effect of the whole road. There is a LED street lamp's index, including light efficiency, light distribution, color temperature, color rendering index, light, life, the input power, but the quality and performance of Street itself, between the difference and relation. Through these two basic energy to evaluate the lighting quality and energy saving effect of LED street lamp.

According to the test data of LED street in Shenzhen city in March 2009 so far, the related indexes of road lighting design standard and LED lamp itself together with analysis of the results, in 2009 the mainstream LED lamp light effect is about 50-80lm/w, the average level of about 70-90lm/w in 2010 the mainstream, combined with the data has been able to meet the demand for all grades of road lighting.

According to the design criteria, considering the illuminance, power density, maintenance coefficient and other indicators, combined with the actual situation of Shenzhen Road, the empirical value. Mainstream LED street light efficiency has been more than 250W of sodium lamp, the index is even higher than the 400W sodium lamp, two-way 6 lane or below the road has been mature. In the narrow road, through reasonable design, energy saving rate can reach more than 50%.

Lighting priority, taking into account energy-saving

The test results of Shenzhen city in recent years, the domestic LED lamps in the light effect, light etc. than international brands less, but in the light distribution (brightness index), color (color spatial uniformity) and larger gap. Wu Chunhai believes that with the growing maturity of technology, more and more widely used, these problems also make the promotion of resistance is growing. LED street lamp because of energy saving effect is obvious and promotion, also may be due to poor lighting quality and stop. Only good lighting effect can win the support of users, thus promoting the application of scale. Therefore, the lighting quality and energy saving effect are the two wings of the LED street lamp, which is indispensable. Lighting priority, taking into account energy conservation should become the focus of the current application.