For road lighting lamps, known as street lighting. LED as light source lighting the road, then known as LED lights. LED street light is composed of many high-power white LED connected together via a hybrid approach. In addition to LED module LED street lamps, but also contains the power supply, optical components and cooling devices.
The foundation is intended to illuminate the road for drivers and pedestrians that supply excellent visual conditions, the guidelines they trek to advance transportation power, down nighttime traffic accidents and violations, along with the surrounding environment to help pedestrians to see, the distinction between orientation. Followed by the commencement of the socio-economic level and the continuous advancement of people’s livelihoods, everyone in the night to outdoor recreation, shopping, visits and other activities more and more, also played a distinguished road lighting lucrative livelihoods, economic prosperity, and promoted the role of the city’s image.
In accordance with the concept of lighting, the road can be divided into four categories: automotive-specific road, usually Avenue, Commercial Street and sidewalk. Often speak of the road lighting, represents the vehicle for road lighting. Many of intent on the road lighting, in order to secure a comfortable supply of motor vehicle drivers is the first one of the visual conditions.
Road street lighting was first, then successively presents high-pressure mercury lamp, high pressure sodium (HPS) lamps and metal halide lamps, energy efficient lamps, lamp and LED lights. In the current match seasoned road lights source, HPS lamp light-efficient, often reaching 100 ~ 120lm / W, in the current Chinese road lighting throughout the mall (has about 15 million), the high-pressure sodium occupies more than 60% ratio. In some communities and villages on the road lighting foremost is the electronic energy-saving lamps (CFL), accounting for about 20% of the mall road lighting ratio.
In road lighting, high pressure sodium because of its light efficiency can reach 120lm / W for the dominant position. However, along with the continuous progress of LED luminous efficiency, high pressure sodium lamps exclusive location at stake. Currently in use on the secondary roads 150W LED street below, has demonstrated significant energy advantage.
Direct impact on life expectancy street lighting maintenance costs throughout the journey. Current high pressure sodium lamp life expectancy is usually around 20,000 hours, high pressure sodium lighting road use life expectancy of only about 5000 hours, while the power LED’s life expectancy is usually up to 5 ~ 70,000 hours.