LED road lighting is energy-saving, but also need to have certain conditions

"About LED, we first thought is such, but whether LED road lighting energy saving, in what condition can the real energy saving, is currently the whole industry to think of the problem, the lighting industry association expert Zhao Jianping PHILPS in the Symposium on the table. In recent years, the rapid development of LED lighting, has made certain achievements, but the overall performance of LED lighting with light color temperature, and there is a new understanding, for example, 4000K and LED color temperature in the following road lighting, more in line with people's visual requirements. LED with low energy consumption, light concentration, color image rich and varied, but some features used in LED lighting, and not the advantage is weak. "LED street in the end section is not such? At the end of last year, three ministries in the provisions of the tender documents for the overall energy efficiency of 85lm LED street, but in fact many companies said it is difficult to achieve this target. Calculated by 80 LM, if the light efficiency of effective use, 90% LED street light irradiation in need on the road, so the effective use of the whole LED street is 72 lum/w. The luminous efficiency of high pressure sodium lamp is 120 lm/w, the lighting effect for 70lm/w (application specified road lighting design standards for road lighting standard minimum efficiency is 70 lm/w). Therefore, compared with LED, the use of high-pressure sodium lamp with light scattered, and if the effective utilization of high pressure sodium lamp is 80 lm/w, its overall energy efficiency is about lum/w. "Under the same conditions, the overall effect is 72lum/w LED street light, compared with the 67lum/w high pressure sodium lamp, energy saving and higher. Comparison of PHILPS lighting cosme, because of its small luminous body, with a good photometric, light effect of 140 lm/w, very suitable for road lighting. Under the same conditions, cosme lighting efficiency is better than high voltage sodium lamp is increased by about 5%, the overall effective utilization value of 89lum/w ", Zhao Jianping analyzed three different whole lamp under the same conditions of effective use of high value LED reporter. From three data, cosme is the most energy-efficient, followed by LED, then the LED cosme high pressure sodium lamp, no energy, but applied to the field of road lighting energy saving than high pressure sodium lamp. "And such LED truly reflected in to replace the traditional incandescent lamp, such as hotels, residential buildings and other places with incandescent lamps to replace 20W 6W LED, can save energy more than 70%, if the halogen lamp to replace 100W with LED light 25W, such as more than 70%," Zhao Jianping told reporters said. LED energy saving potential in where, how to save energy? "Compared to the high pressure sodium lamp, LED biggest advantage is that flexible control, can change the power", LED lamp experts said. LED applied in road lighting field, if you work 10 hours a day after the middle of the night for 5 hours, so energy saving is mainly reflected in the night. Due to the introduction of the control system, by adjusting the voltage, the power can be reduced by 2/3. And according to the operation of the vehicle, automatic adjustment of light, reduce power. "Regulation is one of the advantages of LED applied in road lighting is very good, reflect the energy saving effect of LED from the aspects of road lighting. "In LED, the biggest feature is the single power is relatively low. For high-pressure sodium lamps, the original road does not need 250W, 200W may reach the road lighting design needs. But LED used in road lighting, can provide 200W lamps. "So LED due to its low power characteristics, without the specification limits, can achieve the effect of saving energy. "LED road lighting conditions need to in backbone road, may not use light source of 400W, may 360, 350W source can meet the design standards, in this case, the 400W high pressure sodium lamp does not reduce power, will appear while using LED lights incapable of action, can reflect the energy saving effect" Zhao Jianping, said the regulation is a major factor to achieve energy-saving LED road lighting. Such conditions is also reflected in the configuration of intelligent control. LED road lighting with an intelligent control system, is a better way of energy saving, can give full play to the characteristics of flexible LED control. A large light source is LED strong with you, but if there is no proper use, easy to cause light pollution. LED road lighting to achieve energy conservation, but also consider environmental factors, according to the specific design of the road suitable for lamps. For example, a giant lamp production in many enterprises, as the illumination value is very uniform, but brightness is not enough, not necessarily suitable for road lighting, "Zhao Jianping said the use of LED road lighting but also consider the visual needs of pedestrians and drivers. Energy saving is a prerequisite, the use of LED may not be such, but in some cases, only such, if these factors into consideration, then the LED road lighting has energy-saving effect.