The misunderstanding of sports lighting

　　Since the Beijing Olympics, my country's sports buildings have developed rapidly. Various places have actively built, rebuilt, and expanded sports buildings and sports facilities, radiating from national-level sports buildings  prefecture-level sports buildings, and some developed counties have also built higher-standard sports buildings. However, there are many problems that accompany it. The following is a brief description of the problems in sports lighting.

　　1. Super-standard construction

　　The sports center is a landmark building for a city. It is an achievement project and a model project. The large scale of the building and the high amount of investment make it second  none or among the best in the local area. Under such background conditions, the sports lighting of the sports center is often constructed in accordance with high standards.

　　1.1 Examples of exceeding standards

　　Obviously it is a sports center in a prefecture-level city, and the sports lighting level IV can meet the requirements, but in reality, it is often implemented according  the Ming level V or VI level. What is the concept of level VI? It is a sports building that meets the needs of high-definition television broadcasting. It is generally used for major international competitions such as the Olympic Games. Which city in my country can host the Olympic Games? Why does the IAAF stipulate that the vertical illuminance of a fixed camera direction of 1400lx can meet the requirements of the World Athletics Championships, but we have  2000lx. This requirement of the International Athletics Federation is its highest lighting standard, which is  meet the needs of the World Athletics Championships, but the highest standard of IAAF is only equivalent  the second-highest level of our country's standard-Class V. Similarly, the lighting requirements for the highest level of FINA FINA competitions (Olympics, World Swimming Championships, etc.) are also equivalent  the V level in my country's standards, which is one level lower than the highest level of lighting in my country. Why does FIFA FIFA's highest competition level (V level) require a color rendering index Ra ≥ 65, but our standard does not require this index  be 90 and above? You know, the price of high color rendering is the increase in electrical energy.

　　my country's sports industry is relatively lagging, leading  the inability  make good use of advanced and ultra-standard sports buildings. Many sports buildings are left unused or used for other purposes after completion, resulting in fixed asset investment not being able  play their due role and benefits. Therefore, the sports lighting of stadiums should be rationally selected for appropriate standards.

　　Shandong Haiyang Stadium (CCDI works)

　　1.2 Problems caused by over-standard construction

　　Super-standard sports lighting will bring an increase in investment. Class VI lighting has approximately doubled the investment in Class IV lighting.

　　Super-standard sports lighting will increase costs for future operations. Due  the increase in the number of lights, the load and number of the road, the lighting distribution system and its cables, etc. will increase correspondingly, which will also cause a great burden for future maintenance work. Super-standard sports lighting will waste more power. Due  the increase in the number of lamps used, the operating electricity costs have increased proportionally.

　　2. Excessive emphasis on the demand for television communication

　　The development of TV technology has correspondingly reduced the requirements for the light environment. International sports organizations such as FIFA and FIH have reduced their requirements for light environment and lighting. This is easier  understand. Our common car driving recorder can shoot high-definition video, and it can shoot clearer video images in the environment of ordinary street lights. Of course, our professional TV relay system and TV transmission network can easily shoot high-quality videos under professional sports lighting environments.

　　For sports TV broadcasting, under the premise of satisfying a certain illuminance, the uniformity of light is very important, more important than other parameters.

　　Jiangyin Aquatic Center (CCDI works)

　　3. Sports lighting is suspected of being kidnapped by lighting manufacturers

　　It should be admitted that lighting manufacturers have relatively in-depth research on lamps, light sources, lighting accessories, lighting technology, etc., but the results of research by different manufacturers are different. Therefore, domestic and foreign lighting standards have obvious technical characteristics of certain manufacturers, and they influence the lighting standards.

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