With the increasing development and popularization of sports and competitions, more and more participants and people watching the game, the requirements for stadium lighting are getting higher and higher, and stadium lighting facilities must ensure that players and coaches can see the playing field clearly All activities and scenes that take place on the platform so that they can perform at their best, spectators must follow the athletes and the game in a pleasant environment and comfortable conditions.
What kind of luminaires are used for stadium lighting
What kind of luminaires are suitable for stadium lighting? This requires us to return to the essence of sports lighting - functional requirements. For the sake of ratings, sports events are generally held at night, which is doomed that many stadiums are power-hungry, so energy saving has become the primary pursuit of stadium lighting. When it comes to energy-saving products, LED luminaires are the best. Compared with traditional light sources, LEDs can save 50% to 70% of energy. Traditional luminaires, such as high-power metal halide luminaires, have an initial output lumen of 100lm/W and a maintenance factor of 0.7 to 0.8, but most venues have a light decay of more than 30% after 2 to 3 years of use, not only including the output of the light source itself It also includes factors such as oxidation of the luminaire itself, poor sealing performance, pollution, and respiratory system problems. The actual lumen output is only 70lm/W.
LED luminaires are more suitable for stadium lighting due to their unique characteristics such as low power consumption, adjustable color quality, flexible control, and instant ignition. Such as FIFA Football Sports Stadium luminaires, the efficiency is as high as 160 lm/W, and the constant illuminance output of 8000 hours ensures a constant illuminance level and uniformity in the venue, and avoids the increase in the demand and cost of lighting equipment due to the attenuation of illuminance , while reducing the power consumption of lighting equipment.
What kind of luminaires are used for stadium lighting
"People-oriented" is the purpose of lighting, and stadium lighting is no exception. A healthy light environment is a must. In the lighting design of stadiums, glare and interfering light are the primary unfavorable factors affecting athletes' competitive level, and are also important factors affecting the quality of TV broadcasts. Glare is an important indicator that affects light health and light environment. Glare refers to the visual conditions that cause visual discomfort and reduce the visibility of objects due to unsuitable brightness distribution or extreme brightness contrast in space or time. A feeling of light in the visual field that the human eye cannot adapt to, which may cause disgust, discomfort or even loss of vision. It also refers to the occurrence of excessive brightness in a certain part of the field of view or excessive brightness changes before and after. Glare is one of the important causes of visual fatigue.
In indoor field lighting, the sports lighting grade is I. When the function is fitness and amateur training, the glare value (GR) should not be greater than 35, and the glare value of other sports lighting grades should not be greater than 30; in outdoor field lighting, the sports lighting grade For I, when the function is fitness and amateur training, the glare value (GR) should not be greater than 55, and the glare value of other sports lighting levels should not be greater than 50. LED stadium luminaires can reduce glare and spill light by:
1. Professionally designed luminaires for LED characteristics, equipped with medium light distribution, narrow light distribution and ultra-narrow light distribution;
2. Scientific design of lens and reflector to achieve effective control of light;
3. Make full use of the secondary reflection of the reflector to reduce direct glare;
4. Scientifically determine the working power of the LED light source to control its central light intensity;
5. Design a suitable external glare controller to reduce glare, and use re-reflection to improve light efficiency;
6.Control the projection angle and direction of a single different LED luminaire bead.
What kind of luminaires are used for stadium lighting
Important events are usually broadcast live. In order to obtain high-quality pictures, the camera has a much higher requirement for stadium lighting. For example, for the stadium lighting of the Provincial Games, the National Youth Games, and the domestic single event series, the vertical illuminance in the direction of the main camera should be more than 1000lux. The illuminance of the football club is often around 150lux, which is obviously several times more.
The influence on the camera picture is relatively large, as well as the display index and color temperature. After the initial composition of the metal halide is formulated, the photoelectric parameters of the light source, such as color temperature, color rendering, etc., have been fixed. The conventional ones are 65 (4000K), 80 (4000K), 90 (5600K), etc. can be selected, but according to the ignition point of the light source Over time, the metal halide inside the quartz bulb
Post time: Mar-12-2022