China's road lighting also need to solve what problems?

With the rapid development of city economic construction and transportation, as the lighting quantity and scale of city construction is more and more big, the consumption of city lighting is also rising rapidly. How to meet the requirements of urban road lighting, traffic safety and smooth traffic, the premise of the realization of scientific and reasonable power saving has become an important issue.

In recent years, the rapid development of LED makes many of the world's city are promoting LED, LED energy-saving lamps transformation of traditional street lights, road are LED road lighting products. However, LED road lighting market prospects although considerable, but there are also such as the standard, technology, sales and other issues, really want to completely occupy the market, LED road lighting may need to solve the following questions.

1, standardization

Develop and research the lighting design standards for their roads are generally refer to the international standard for road lighting design based on the actual situation of the existing road traffic.

Is currently the most authoritative international has two standards, one is put forward the International Commission on illumination of the "motor vehicle and pedestrian traffic road lighting proposal" (115-1995), it is the vast majority of countries in the world; the two is proposed for road lighting illuminating engineering society of North America "(RP-8-00) [8-9], it is mainly used in america.

In China, has not formed a perfect industry standard. Now do a lot of LED street lamp manufacturers, and each manufacturer's module is not uniform. Without standardization, there will be a series of problems in the process of production, distribution, use and so on. In the promotion of LED process, the standardization problem is worthy of attention.

2, LED energy saving problem

LED can do street because of its performance is better than the traditional lamp dimming, so can do its alternative source. Road lighting is the most important part of the energy-saving light, at present, only half of the traditional light dimming, LED lights can be transferred to the 5%-10%, which is one of the LED lights better than other street lights.

But dimming should be to adjust light according to the traffic flow in different period of time, LED lamp can eventually energy depends on the size of the traffic flow. The street light control light with traffic flow, which is advanced in the country, but also the embodiment of the advanced LED street lamp.

Now International Commission on illumination CIE115, the new guidelines formulated by considering road classification, traffic flow, traffic, there is no cross road information data, the lane is divided into M1-M6 grades, different grades have different requirements for lighting. Therefore, many people in the industry hope that the country can develop the appropriate road classification as soon as possible, which will be a great help for LED street lighting applications.

3, LED precision control problem

One of the reasons many industry promotion of LED is that LED can control precision, HPS lamp light control is not accurate, so that the light "run" across the street and a waste of energy, and the precise control of LED lamp light can control the light in the irradiation area, thus saving "unnecessary" light.

But this theory is the biggest lack of "on both sides of the road also need to consider the light". According to an international large manufacturers to do the experiment, 78% of people think that the road on both sides of the light is comfortable, there is no light people feel uncomfortable, both sides of the road can bring a sense of security. This is very important, not only to consider the issue of energy conservation, road lighting transformation to master this degree".

4, LED color problem

The characteristics of LED is high temperature, high brightness, high luminous efficiency. High color temperature is now used 5000K, originally used to 6000K. In fact, color temperature can not be too high, which is related to the law of the natural environment of human life.

Morning 6:00-8:00, natural color temperature of about 2000-3000K, which belongs to the low temperature with the change of time, color temperature can reach 6000-7000K at noon, in the afternoon and low temperature. Therefore, it was suggested that night should avoid the use of 5000-6000K high color temperature lamp, to follow the laws of nature

Of course color temperature preferences and some people prefer white, It differs from man to man., some people prefer a yellow light, different preferences, so this is not the same.

5, LED cost

Cost is the biggest problem encountered in the field of enterprise in road lighting. Currently, such as road lighting municipal engineering, have begun to use EMC model, that is, to reduce energy costs to pay the full cost of energy-saving projects investment. This model allows users to use future energy savings for plant and equipment upgrades, reduce current operating costs, improve energy efficiency.

But it also means that the enterprise cost is higher one-time investment, and the revenue is relatively long time. In addition, street lighting, such as street lighting maintenance costs are very high, compared with the indoor lighting input.