In recent years, the rapid development of LED lighting applications, many manufacturers have introduced high-power LED street lamps, and as more and more energy-efficient products used in road lighting, in the current high-power LED lamps can replace the traditional light sources (mainly high-pressure sodium lamp) it? The following are my views on the application of high-power LED street to talk about a few points:

I, on the LED street lamp energy-saving effect, in many practical high-pressure sodium lamp LED lamps to replace the case, power is an important factor, but not more than the actual LED street lamp energy-saving high-pressure sodium lamp. From the comparison of light-emitting efficiency, the practical application of the current high-power LED street light-emitting efficiency (80lm / W) well below the high-pressure sodium lamp (100 ~ 138lm / W), although the LED is a directional light-emitting, more efficient than high pressure sodium lamps, but at the end of light-emitting efficiency, LED street lamps integrated energy efficiency or lower than the high-pressure sodium lamp.

Proved in a number of high-pressure sodium lamp LED lamps to replace the energy-saving effect was the case, according to analysis, these cases are often the original street lamps high power (brightness seriously overweight) or low efficiency lamps, light a serious state of decay, as a LED streetlights the basis of power is not science.

Second, LED street light color, the current high-power LED street lamp is used 5000K ~ 6000K color temperature of white light, as light sources for road lighting, in the visual feel too cold, at the same time when the eyes of hyperopia will decrease the ability to observe, in this some research shows that less than 3000K warm white or yellow are more suitable for road lighting, so color LED solar street lamp is not suitable for practical street.

Third, LED lamps are far from the current cost of the high-pressure sodium lamp, a LED street price of 4,000 yuan is currently ~ 8,000 yuan or more, a brand of imported high-pressure sodium lamp (including lamps, light electrical equipment) more than 1500 yuan price , the average price is less than a quarter of LED lamps.

Fourth, compare the life, LED street lamp is the nominal service life of 50,000 hours or more, this is the ideal life of the chip, chip packaging, such factors as heat lamps may light attenuation, as well as drive circuit (electronic components for owners) obviously can not be the life span of 50,000 hours to achieve. Attempts have been made part of the LED lamps, they found that less than half a month, the lamp has been very obvious attenuation.

Nominal high-pressure sodium lamp life is now more than 28,000 hours, the practical application of 3 to 4 years are not a big issue, compared with high-pressure sodium lamp and associated electrical appliances to multi-life.

Maintenance of the light source, high pressure sodium lamp to be easily, and can be directly replaced in the field of electrical light source, a lower cost. As for the LED street lamp, I think that is maintenance-free factory, so the scene can not be carried out to maintain.

5, LED street light with the problems of the current street lights with LED light technology has made significant progress, some manufacturers have developed with the second optical system, rather than rely solely on the chip to with with light, but the view, Light also can not be achieved with perfectly reasonable, I have observed a lamp in the road side with a more bright light, also meet the requirements of uniformity, but significantly less than the sidewalk side of brightness, SR value is obviously not meet the requirement.

At present, the development of secondary products with PS is not a lot of options in the application of good small LED lamps.

6, LED street lamps in the product specifications for the lack of uniform technical standards, there is no uniform technical standards for the production of LED lamps, each manufacturer according to their own standards to produce its own products, it is very difficult between the generic, the other multi-chip LED streetlights assembly features the work of bundled chips and lamps, it is difficult to maintain, maintenance must be used when the original product.

And high-pressure sodium lamp as a result of the unification of technical standards, lamp, light source, electrical connection of a strong general, between different manufacturers is interoperable products, from the maintenance point of view, this is very important, and the maintenance of street lighting management unit for in turn is the most important, Only then can it be extinguished in time for street maintenance, to ensure a high rate of light (the higher level department management of street lighting assessment in the content of the most important), at the same time significantly reduce maintenance costs.

It can be said that in the current state of development, LED lamps can not be maintained, in the event of failure, only the replacement of the lamp, in addition to high costs, and maintenance will take significantly longer, which is the use of units is very negative.

LED lighting is a technology being developed, the luminous efficiency in the continuous improvement of the declining costs, but to replace the traditional high pressure sodium street lighting is not as often, so issued by the Ministry of Construction, "" Eleventh Five-Year "City of Green lighting engineering program, "Professional Committee of the city road lighting," the "Eleventh Five-Year" City of Green Lighting Project Plan Regulations "and other policy documents clearly lamps or energy-saving light source mainly of high-pressure sodium lamp, LED is recommended in the Urban Landscape Lighting application.