What is the development prospect of LED tunnel lights
Led tunnel light is a kind of tunnel light. It is used for large-area flood lighting in tunnels, workshops, large warehouses, venues, metallurgy, various factories, engineering constructions and other places. It is most suitable for urban landscapes, billboards, and buildings. The surface is used for landscaping lighting.
With the rapid development of road traffic construction in my country, the construction scale and number of road tunnels have also become larger and larger, and tunnel lighting has also presented urgent problems such as energy saving and safety. As the LED light source technology matures, domestic The lighting industry has also carried out research and application practice on the application of LEDs in highway tunnel lighting. Therefore, combining advanced control methods in tunnel lighting and adopting a new generation of light sources with high luminous efficiency, good stability and long life will become a demand And trends.
Led tunnel light is a kind of light-efficiency energy-saving lamps. Light-emitting diodes (LED) are used as the light source of the luminous body. It has high light efficiency and long life. It can be used with different reflectors to achieve multi-purpose lighting; and after softening treatment, it will not cause people Dazzling or other uncomfortable reactions. The ballast uses overheating protection technology to ensure the service life of the lamp. Imported high-purity mirror surface aluminum anodized material is used as the reflector and is designed with precise light distribution. The power factor is greater than 0.9, high reflective efficiency, good light transmittance, energy saving and environmental protection.
Comparison between LED and traditional tunnel lighting source LED is a solid-state semiconductor device that can directly convert electricity into light. Compared with traditional road tunnel lighting sources (sodium lamps, metal halide lamps, etc.), LED light sources have the following advantages:
(1) Low light decay: If the heat dissipation conditions are good, the LED has positive luminous decay in the first 10000h, the luminous decay of the first 10000h is 3%-10%, and the first 50,000h is basically 30%, which is much lower than ordinary road lighting sources. Luminescence is more stable.
(2) High color rendering: general LED color rendering is about 70 to 80, and it is higher if three primary color phosphors are used; general high pressure sodium lamp is 20 to 35, low pressure sodium lamp is lower, so even the traditional light source brightness Higher than LED, but the visual effect is worse than LED, "not the brightest, but the clearest to see" This should be a direction for the development of LED light source applications.
(3) Life: The life of LED is higher than that of general road tunnel lighting source, and it is generally higher than 50000H now.
(4) Price: Although the current price of LED lamp holders is higher than that of traditional lighting fixtures, with the maturity of manufacturing technology, their prices are currently falling sharply. The price of a set of high and low pressure sodium lamps is generally about 2,000 yuan, and its cables and other auxiliary The price of parts is higher than the cost of LED cables.
In addition, LED also has the advantages of high maintenance factor, good safety performance, no flicker, energy saving and environmental protection.
The factors considered in tunnel lighting design include length, line type, interior decoration, road surface type, unmanned roads, structure of link roads, design speed, traffic volume and types of cars, etc. At the same time, the light source color, lamps, arrangement, and lighting must also be considered. The design of tunnel lighting is to solve a series of problems such as level, brightness outside the cave and adaptation of the human eye.
Energy saving in tunnel lighting is a requirement for light sources, lamps, lighting methods, etc. Energy saving includes lighting design energy saving and management energy saving, among which lighting design energy saving is the most important energy saving measure, which includes the adoption of novel and reliable design concepts and Reasonable standard values, and the use of high-efficiency light sources, high-efficiency lamps, increased light reflectance, and lighting control energy saving. Compared with traditional light sources, LEDs have great advantages in energy saving and stability. Therefore, based on the advantages and characteristics of LEDs, improving the efficiency of LED chips and a reasonable light distribution design to improve the overall efficiency of the lamps are important issues that LED tunnel lighting needs to solve at present.
The luminous efficiency of the LED light source is the basic index to measure the efficiency of the tunnel light source. According to the actual requirements of the LED tunnel light, the light efficiency used must reach a certain level to meet the needs of replacing the traditional road lighting source sodium lamps and metal halide lamps.
In recent years, with the continuous update and development of LED chips, packaging and light distribution technology, the efficiency of LED light sources has increased to a new level. For example, the Spark series LED tunnel lights use high-quality chips, reasonable light distribution and structural design, and average light The efficiency is much higher than the current LED tunnel light products.
