Restrictive factors of LED street lights

1. There are more LED street lights in my country

In response to the global financial turmoil, the Central Development and Reform Commission has allocated 4 trillion yuan and local financial support. It is estimated that more than 10 trillion yuan will be invested in national transportation, supporting enterprises, and improving infrastructure. The Ministry of Science and Technology of the People's Republic of China launched the "Ten Cities and Ten Thousands" LED street lamp semiconductor lighting application project across the country. Under this strong east wind, the semiconductor lighting industry, which has always been supported by the government, will be a great opportunity for development. Many companies are optimistic about the development space of this sunrise industry, especially the obvious energy-saving advantages of semiconductor outdoor lighting. In the past two years, many companies have put into production. Without knowing the characteristics of semiconductor road lighting, they have simulated, imitated, and made along the shape of today's conventional lighting street lamps, and their products have been introduced to the market. Most products have problems of varying degrees.

2. Domestic light sources can not meet market demand

The development of domestic LED light sources is relatively late compared with foreign countries, and the technical level is still a certain distance from the international leader. Although domestic LED light sources can reach 100,000 hours in theoretical life, they cannot be completely and effectively solved due to heat dissipation problems, thus making their actual lifespan. Great discount; unstable power supply system: It is the industry consensus that the LED drive power is unstable. In fact, it is dragging the LED lighting industry because the drive power is an important part of the LED street lamp, and its failure will lead to the failure of the entire lamp. Poor power supply reliability may cause the installed street lights to be broken in a short time. For outdoor high-altitude devices such as LED street lights, it is difficult to install and repair. For street lamp manufacturers, unstable power supplies make maintenance costs. Climb high.

3. Product maintenance is difficult and the product price is high

Maintenance issues. The high-pressure sodium lamp is easy to maintain, and the lamp does not need to be replaced as long as it is scrubbed. The light source is replaced once every 4 years, which is very convenient. However, LED street lights involve LED tubes, modules (including lenses, etc.), power supply devices, etc. The components and components are more likely to be damaged, difficult to maintain, and they are likely to be replaced as a whole, and the cost is higher. High price: The price of LED street lamps is 2-5 times that of high-pressure sodium lamps. Even if the power consumption of LED street lamps is only one-half of the high-pressure sodium lamps, because the price is much higher than that of high-pressure sodium lamps, the cost of replacing high-pressure sodium lamps with LEDs is recovered. The cycle will still be very long;

4. There are problems in product design and quality, which need to be improved

The light color of LED street lights. High-power LED street lights, as a road lighting source, are too cold or even gloomy in visual perception, which is not conducive to motor vehicle driving. The life span of LED street lights is not high. The average life span of a high-pressure sodium lamp is 4 years. There is no practical experience in the service life of LED street lights. The existing companies claim 50,000 hours, and there is no reliable basis. Because the life of the capacitor of the LED drive circuit device is only about 10,000 hours.

High-power LED street lights basically use white light with a color temperature of about 5000K. As a road lighting source, the visual perception is too cold, and the observation ability will be reduced during long-sightedness. In this regard, the street lamp user unit has the most say. The yellow light or warm white light of about 3000K is more suitable for road lighting, so daylight LED street lights Not suitable for street lights.

LED street lamps lack a unified technical standard in terms of product specifications, and there is no unified technical standard for LED street lamp production. Each manufacturer produces its own products according to its own standards. It is difficult to use each other. In addition, the lamps of LED street lamp manufacturers are self-contained. As a system, the light source electrical assembly and the lamps are bundled together, and their different working characteristics are difficult to maintain, and the original products must be used for maintenance.