In the short term, LED and traditional electric light source will complement each other.

Various discussions about new light sources Finally, everyone's focus is on efficiency and energy efficiency. According to surveys, high-efficiency lighting can achieve energy-saving targets of about 40% for existing global lighting. Light sources such as LED, high-pressure sodium lamp, electrodeless lamp and metal halide lamp in lighting fixtures are constantly improving in energy saving and light efficiency. Various light sources are used according to their own characteristics, and their application fields are biased. For example, high-pressure sodium lamps are mostly used for road and tunnel lighting. Metal halide lamps are mostly used in factory buildings (high power) and store lighting (low power). With its own advantages, LED has a good performance in indoor and outdoor lighting, and is the preferred source of energy for energy efficient lighting. LED light efficiency, price, color consistency and color rendering, heat dissipation technology and other series of problems have not made further breakthroughs, how LEDs and complementary development of traditional lamps; will be the focus of the industry in the next few years.

When LED is used for road lighting, it is still controversial compared with high-pressure sodium lamps. With the development of LED chip technology, LED light efficiency and color rendering have been significantly improved. When the color temperature of the LED is 5000 to 6700K, the light efficiency reaches between 60 and 90 lm/W; the color rendering index is about 60 to 80. At present, the color rendering index of commonly used white LED lamps is much larger than that of high pressure sodium lamps. However, the light efficiency of the high-pressure sodium lamp has also increased, but the increase is much smaller than that of the LED lamp, but the light effect of the middle vision is still higher than that of the LED lamp. High-pressure sodium lamps have been developed for decades, and the performance improvement space is small. In the future, LEDs need to consider how the performance and cost performance of road lighting are superior to those of high-pressure sodium lamps, so high-pressure sodium lamps will gradually lose their advantages in the field of road lighting.

From the current analysis of the electrodeless lamp technology and the application range of the industry products, it can be seen that the electrodeless lamp 80w-300w is most favored by the market, especially in the industrial lighting and road lighting fields, and its energy-saving effect and high cost performance have been recognized by the market. . Induction lamp light source performance in the field of general lighting is better than LED. The shortcoming is that in the long run, although the luminous efficiency of the electrodeless lamp can reach 90lm/w, the upward lifting space is limited by the luminescent material and the principle of illuminating, and there is no sign of breakthrough.

Used in industrial and commercial lighting, quartz metal halide lamps and ceramic metal halide lamps have achieved good color rendering performance of 80-90, stable color temperature, light efficiency of 80-90Lm/w, and average life of 6000 hours or more. The decline is very small. Compared with traditional light sources, the cost is too high and it is still a difficult point for LED application promotion. For example, when LED replaces the same luminous flux of 70W metal halide lamp, the total cost is too high, and the power saving advantage is not obvious.

LEDs are incomparable in low-power illumination and in-focus illumination. Induction lamps and metal halide lamps are incomparable. This can be reflected in the principle and power (power, volume) of the induction lamp illumination principle and structure; The low-power energy-saving effect, the electrodeless lamp is also slightly inferior. In high-power general-purpose lighting, metal halide lamps and electrodeless lamps are slightly superior in terms of low heat generation, no glare, no stroboscopic light, and soft light. This has been reflected in marketing applications. It can be seen that LEDs and electrodeless lamps and metal halide lamps have certain complementarities in general lighting applications. The superior characteristics and technological advancements of LEDs will play a more important role in directional lighting. However, whether it is at high power or low power, the problem of light color inconsistency of LED lamps is still a big problem.

In summary, in the future general lighting field, the application of LEDs and electrodeless lamps and metal halide lamps complement each other, and they play an important role in different application fields. LED related technologies are developing rapidly, and governments and enterprises are actively promoting their applications, which will accelerate the development of the industry, and there should be a broader application space in the future. LEDs should be rationally promoted in the application of lighting in accordance with the improvement of their main performance.