International Football Field Lighting Standards

Football is a highly competitive collective sport and is a popular sport in the world. The history of the development of football is sufficient to illustrate the vitality and influence. The importance of the lighting of a football field for a modern stadium not only requires a beautiful and elegant building appearance, complete sports equipment, but also a good lighting environment, that is, suitable, uniform illumination and brightness, and ideal light There are three-dimensional sense and no glare. In addition to ensuring good viewing results for the audience, the lighting requirements for referees, athletes, and events must also be guaranteed, as well as good television coverage.

Lighting is based on the function of light, to ensure that the light acts on the eyes of athletes, referees and spectators and produces vision so that everything on the stadium ground can be seen, such as the brightness of the field environment, the movement of objects, the color of surfaces such as buildings, appliances and clothing, and viewing The shape and size, depth, three-dimensionality of the target, the state of the athlete during exercise and the atmosphere of the stadium, etc. Therefore, good lighting plays an important role in modern stadiums.

Football Stadium Illumination Standard and Lighting Quality Standard

In order to use the light distribution reasonably to meet the requirements of the vision of the athletes, spectators, referees and good television broadcast effects, to meet the visual requirements of athletes during sports competitions, and to minimize the objective impact of lights on the competition. Minimize the discomfort caused by the lights when watching the game. Satisfy the lighting requirements of color TV broadcasts and improve the quality of broadcasts as much as possible. The lighting design of the football field must meet the FIFA’s illumination standards and lighting quality standards.

Illumination standard

According to the rules of FIFA, the length of the football pitch is 105 ~ 110m and the width is 68 ~ 75m. There must be no obstacles at least 5m outside the bottom line and the sideline to ensure the safety of players. Football lighting is divided into indoor football field lighting and outdoor football field lighting, and different ways of installing lights are also different. According to the International Sports Federation No. 83 Recommended Illumination Requirements, the standard should determine the lighting standard according to the function of the football field. It is divided into seven levels. The illumination for training and entertainment activities is 200lx, 500lx for amateur competitions, 750lx for professional competitions, and 1000lx for general TV broadcast, Large international competition HD TV broadcast 1400lx, TV emergency 750lx.

Lighting quality standards

1. What the lighting quality standards include

1.In addition to providing sufficient horizontal and vertical illumination, the key to glare sports lighting is to reduce glare so as to achieve a bright and glare-free effect. Glare is one of the most important factors affecting the quality of lighting. According to the CIE publication Color TV System Stadium Lighting “, the maximum glare index GRmax in the field should be less than 50. The smaller the glare rating, the better the glare limit. The glare rating GR. GR = 27 + 24Lg * Lvl / Lve. Lue is the ambient sound and light rating GR of the light. When GR is generally used to calculate difficult illumination, glues in different directions should be calculated to determine the type of the lamp. In addition to the installation height and the way of pushing out, you can also take the Method of off-field background illumination.

2. Light source color temperature and color rendering requirements

In order to achieve a good color TV broadcast effect, the lighting quality of the stadium is not. But it is related to the illuminance, and it is closely related to the color temperature and color rendering of the lighting source. According to the article “Chinese Civil Building Lighting Design Standard” GBJ133-90, the color rendering index Ra of general light sources for color television broadcasting should not be less than 65. According to the requirements of CIE publication and FIFA, the color temperature Tc of the light source is greater than 5000K and the color rendering index Ra of the light source is greater than or equal to 80 to achieve the best spot lighting effect and color TV broadcast effect.

3.Light source color temperature and color rendering

The color temperature of the light source and the color rendering index of the lighting design of the sports venue are very directly related to the application range. The International Lighting Commission requires the color temperature of the light source to be between 3000 and 6000K. Generally, the competition is from afternoon to dusk. At this time, the color temperature of the sky is between 4000 and 6000K. Therefore, it is generally required that the color temperature is greater than 4000K. The higher the color rendering index of a light source, the better its color rendering, and TV broadcasts have good color reducibility, so there is a certain requirement for the color rendering index of a light source. International competitions and television (color) broadcast venues are required 90≥Ra≥80; domestic and foreign competitions and training places 80> Ra≥60; training places 60> Ra≥40. According to the color rendering index of the standard stadium, Ra≥80.

4. Directionality of light

The depression angle of the lamp not only affects the vertical illuminance, but also has a greater glare effect on athletes, spectators and referees. For ground stadium lighting design, the aiming direction of the lamps should be selected. In addition, the ratio of the light from the main camera to the other side should be controlled within a certain range, and the most important point of lighting is to set it in the center of the football field and in the restricted area.

5. Energy saving requirements

The energy saving of lighting lies in adopting reasonable lighting schemes and efficient lighting devices, reducing line losses and good lighting control. Sports buildings are large-scale lighting projects. In terms of energy saving, only the initial investment costs are compared, and the lighting design selected based on the minimum operating cost is not a reasonable design. Investment and operating costs are considered together.

International Football Stadium lights

A few years ago, football stadium lighting mostly used traditional high-intensity gas discharge lamps-metal halide lamps. The power of the lamps was as high as 1000W-2000W, and the installation height of the lamps could reach 50m-60m. However, metal halide lamps have short service life, single color temperature, and long start-up time. These characteristics have increasingly failed to meet the lighting requirements of football stadiums. With the rapid development of LED lighting applications, the application of LEDs in football stadium lighting has also attracted more and more attention. Football field lighting source. The LED light source is used to meet the energy saving and emission reduction standards and prevent strong ultraviolet radiation from hurting people. The light source should meet the requirements of high light efficiency, long life, energy saving, and environmental protection. At the same time, it should have good color rendering and suitable color temperature parameters. In places with high lamps, LED lights should be preferred. In order to meet emergency lighting, a light source capable of instantaneous ignition should be used.

LED has the advantages that traditional lighting sources do not have, such as lower power requirements, better driving characteristics, faster response speed, higher shock resistance, longer service life, green environmental protection, and continuously increasing luminous efficiency. And so on, it has become the new generation light source that is most likely to replace the traditional light source in the world. In commercial applications, LED lamps have become the mainstream choice for outdoor football field lighting. The football field has a wide area, and the length of the 11-a-side football field is more than 100 meters. Installing lights in such a large sports field requires high power and projection distance of the lamps. According to the different specifications of the football field, 400-800 watt LED lamps are generally used.

The concrete embodiment of the advantages of LED lighting

1. Mercury-free, best green light source

Green and environmentally friendly, no pollution, no pollution elements such as aluminum and mercury, and no pollution to the environment. The decorative effect is excellent, the appearance of the special surface treatment process is adopted, the installation is simple, the disassembly is convenient, and the application range is wide. The surface of the lamp is anodized and anticorrosive to ensure the heat dissipation requirements and service life of the LED light source, and the structure is compact and beautiful.

2. Super heat dissipation shell

The world’s first pin-shaped heat sink has a much higher heat dissipation efficiency than traditional chip heat sinks, which can make the LED junction temperature lower than ordinary heat sinks by more than 15 ° C. It has very good heat dissipation performance. The fin-type heat dissipation shell design has been recognized by the industry for its excellent heat dissipation performance. Based on the fin-type heat dissipation design, it also incorporates the technology of respirator (that is, in a suitable position of the lamp housing). Adding a respirator makes it easy to remove the heat and humidity from the lamp in a timely manner, while blocking the outside moisture from entering the lamp body), so the heat dissipation performance is very good. On the other hand, it is tightness. In addition to considering the scientific design of the lamp housing, the details such as sealing rubber ring and connection port are also the top priority. The overall protection level should not be lower than IP65, and should not be low in the hot and humid climate environment all year round. To IP66. And waterproof performance.

3. Unique chip technology

LED chip stability, luminous efficiency, light lifetime, power factor, color temperature, arrangement and other technical parameters are important factors affecting the quality of lamps. For outdoor football stadium lighting, we can provide you with long-term design and installation practices Parameter reference, whether it is a chip or integrated (COB) chip, the good stability is the key. The light efficiency is ≥130LM / W, the color rendering index is ≥80Ra, the light lifetime is not less than 3 years, and the power factor is 0.95. Above, the color temperature is ≥5500K positive white light. Large standard football stadium LED lighting fixtures use full tile thick material radiators, multiple configuration options, Philips 3030 copper substrate patch light source models, CREE original imported light sources. All are driven by high power factor constant current outdoor waterproof and lightning protection power supply, and the test life and stable operation can reach 30,000H-50000H hours. Failure rate is less than 3/1000. Dedicated outdoor tennis court with light and color matching, color rendering index up to 80%.

4. No glare, no flicker, multi-mode design

High-purity aluminum is used as a reflection device, and the illumination angle is wide and uniform, without glare and flicker. Unique single chip integrated single module light source design, using imported high-brightness chips, self-encapsulated high-power LEDs (30W–150W) as the light source with high thermal conductivity, low light attenuation, pure light color, no ghosting Good color properties, more realistic representation of real colors, and various light colors are available, which can meet the needs of different environments, eliminate the depressed mood caused by the high or low color temperature of traditional lamps, make the observation department more comfortable, and improve workers Work efficiency. Adopt constant voltage and constant current control and wide applicable voltage (AC85V-265V) to overcome the power grid, noise pollution and lighting instability caused by the ballast, which will bring irritation and fatigue to the lighting department during work.

5. Stable power supply, long life

The driving power of LED lamps is also the key to directly determining the overall performance of the lamp. Whether it is an external power supply or a built-in power supply, it must have good stability, adapt to different climate environments, and have obvious energy saving. Only use the integrated power of multiple chips. The LED light source is equipped with a high-efficiency power supply, which can save more than 75% of energy compared to traditional lamps with the same brightness. Long life, guaranteed more than 50,000 hours: unique chip technology fully guarantees the life of the light source. The integrated design of the radiator and the lamp housing fully guarantees the service life of the entire lamp.

In summary, LED lamps have gradually replaced traditional metal halide lamps and become the ideal choice for large outdoor stadium lighting. Special LED football field lighting fixtures have become more and more attractive due to their high luminous efficiency, low carbon energy saving, small size and light weight. Welcomed by everyone. The use of LEDs in football stadium lighting must meet the corresponding requirements in product performance and application technology. It adopts a unique light distribution technology, which has a 25% higher light efficiency than other ordinary LED lights; 144 light distribution curves, precise control of light, and improved The utilization ratio of light projects the light effect originally projected outside the venue into the venue as much as possible, which improves the lighting efficiency. As LED lighting for large outdoor stadiums, and various harsh environments such as outdoor high-altitude, you must choose scientifically based on specific technical parameters and actual needs when selecting lamps. Good football venues are equipped with high-quality lighting. The system is not only a good expectation of the sports lighting industry, but also the well-being of the users.