Factors in baseball field lighting costs

A baseball field is a fan of baseball games. Most of the game’s activities start from home base. The infield is a diamond surrounded by home base, first base, second base and third base. After hitting the hitter, the striker will try to go to the base in the counterclockwise direction. Both the home run to the right of the first base line and the home run to the left of the third base line are both out-of-bounds areas, and vice versa. The outfield is the inner zone outside the infield. To understand the lighting of the baseball and softball fields, we must first understand the size of the field. Baseball and softball are mostly outdoor courts. The baseball field is divided into an infield and an outfield. The infield is also called a box. The infield is surrounded by two sides of the outside field and two other sides of the outside field. The size of the inner field is 27.5 × 27.5m. The outer field is fan-shaped. The distance from the home base to the middle and outer fields via the second base is at least 121.92m.

The area of the baseball field

The distance between each side of the infield is 27.43 meters. The distance between the center of the leading edge of the pitcher board and the home base sharp angle is 18.44 meters. The area behind the home base and beyond the two sides is not less than 18.29 meters, which is an effective area outside the bounds. The sides are at least 97.54 meters long. The distance between any point on the top line of the two sidelines and the sharp angle of the home base shall not be less than 76.20 meters. A rear screen should be set at 18.29 meters behind the home base. The net is more than 4 meters high and more than 20 meters long. A fence is set up around the site, and the height is more than 1 meter.

The lighting design of the baseball field

The area of a baseball field is about 1.6 times that of a football field. The shape is fan-shaped. The difference between the inner field and the outer field is very different. Generally speaking, Average infield photo Essentials of baseball field lighting. It comes down to: the degree is about 50% higher than the average field illumination, so the field illumination is uniform

(1) The diameter of baseball is small. The fast moving speed is the difficulty of the instantaneous change of the trajectory. Considering that the illumination value between the inner field and the outer field is large, it is difficult to capture. Therefore, sufficient horizontal illumination and small differences in a certain height range are required. It is also necessary to take into account the value of the illuminance at the junction of the infield and outfield. Vertical illuminance: It is expected that the illuminance values of the inner field and the outer field are designed to have a significant difference, and more

(2) To meet the illumination requirements of the baseball field and the outside field. It is expected that the boundary between the inner field and the outer field becomes the watershed uniformity and gradient relationship between the high and low illumination values; Therefore, the illumination value of the outer field area adjacent to the inner field is reduced. Zoom out

(3) According to the site environment, determine the number of poles and the height of the poles. The difference in illuminance between this area and the outer edge of the outer edge of the arc, so as to mention the types of lamps, beam width and number of lamps. High field uniformity. Baseball stadium lighting design. Not only must the average vertical illuminance and eight light poles be used as the lighting method of the stadium. The height of the light poles is set to 28m. The average horizontal illuminance must also achieve the uniformity of vertical illuminance and a fan baseball field. In the form of center symmetry. The uniformity of the flat illuminance of 34 sets of two poles, the average vertical illuminance and the average horizontal illuminance pole, the number of lamps of 48 sets of two poles and 32 sets of four poles are distributed in the scale factor of eight poles. Also. You also need to limit the value of the glare index and choose to take it. A light source with a high color rendering index and a corresponding color temperature can meet the basic functional requirements of a light baseball stadium. Ensure baseball players train at night

Baseball field lighting arrangement

1. The baseball field lights can be arranged with 6 or 8 poles, and the baseball field lights can be installed on the horse track above the auditorium.
2. The baseball field light pole is located in a range of 20 °beyond the main viewing angle of the four bases.

Commonly used lights in baseball field

The light source of the baseball stadium lighting should be stadium floodlights or high-efficiency floodlight LED fixtures. The power of the light source is 400w-1000w according to the height of the fixture, the density of the lamp and the lighting requirements. According to different game levels, the lights can be controlled in groups and the distance between the lamps is large Some can appropriately reduce the glare level; the lighting range of the baseball field should not only be in the sports field, but also in the upper space of the field. There should be sufficient illumination, especially in the range between the pitcher and the receiver. In order to reduce the glare interference to the audience and increase the comfort to the visual environment, there should be an illuminated area of 7 m from the outside of the court boundary. To reduce glare and increase space brightness, the installation height of ordinary baseball stadium lighting fixtures should be greater than 28m. The installation height of the lighting fixtures for the major baseball stadiums should be greater than 35m.

Usually 6 light poles or 8 light poles are used to install the lights, and the lights can also be installed on the rain canopy above the auditorium. The light poles should be outside the main visual range (20o) to reduce unnecessary glare. Baseball field professional flood light performance characteristics: light fixture, with easy to handle, equipped with 360ºadjustable mounting bracket; meanwhile equipped with precise sight accessories, installed at the top or low end of the lamp body; ambient temperature: Can be adapted to indoor and outdoor general weather use; through gradual improvement, the luminous efficiency of the lamp and the effective utilization of light are greatly improved; the unique oval optical system is matched with the new light source to ensure the overall efficiency with high reliability, low glare and optimal lighting Level, compact and beautiful appearance, small wind resistance coefficient and light weight. The lamp has a uniquely designed light distribution curve; the light beam is accurate, a variety of light distribution, instant start and so on. Performance characteristics of high-efficiency floodlight LED lamps: Patented “fin-type” heat dissipation structure design. LED has a larger heat dissipation area and better thermal conductivity, which not only effectively reduces the temperature of LED nodes, but also has a lower light decay and a longer life. Lighter in weight and extremely safe in use, it is a high-tech LED lighting product suitable for sports lighting on the market .

The illumination requirements for Major League Baseball are: 1. Infield: horizontal illumination ≥2500lx2. Outfield: horizontal illumination ≥2000lx3. The color rendering index of the light source is ≥654. The color temperature of the light source is ≥3700K. Outdoor baseball field lighting The baseball field lighting range should not only be on the sports field, but also in the upper space of the field. There should be sufficient illuminance, especially in the range between the pitcher and the receiver. In order to reduce the glare interference to the audience and increase the comfort of the visual environment, there should be an illuminated area of ​​7m from the outside of the court boundary. To reduce glare and increase space brightness, the installation height of ordinary baseball field lighting fixtures should be greater than 28m. The installation height of the lighting fixtures for the baseball field of major games should be greater than 35m. Usually 6 light poles or 8 light poles are used to install the lights, and the lights can also be installed on the rain canopy above the auditorium. The light poles should be outside the main visual range (20o) to reduce unnecessary glare. The size of a baseball’s infield is standard, while the size / area of an outfield varies. Site dimensions include an out-of-bounds area of ​​4.6 meters (15ft).

Baseball field arrangement lighting note details

1. In order to ensure that athletes have a good light environment and reduce shadows, the light requires three or four directions. The position of the stadium lights, glare control, stadium light groups, luminaire beam expansion and installation height all have requirements. Stadium light position. The position of the stadium lights should be consistent with the direction of the game. As shown in “A, B, C” these positions.
2. Glare control. Place the stadium lights out of the loyalty line of sight of the athlete, as shown in Figure 1, a triangular area extending from the baseline of each infield forms a 20 ° zone.
3. Stadium light beam expansion. The luminaire defines the top of the beam should be at least 10 ° below the stadium light plane
4. Stadium light pole installation height. The minimum installation height of the luminaires on all poles from the ground is 21.3m. To increase the number of luminaires, increase the installation height of the luminaires above. The height requirements of the light poles in areas A, B, and C in Figure 3 are different, and can be calculated according to the following formula.
5. Determine the minimum height of the light pole

Zone A light poles provide illumination to pitchers and infielders. “A” light pole height = 90 ’+ (SETBACK / 2)

Zone B light poles provide lighting for the infield and outfield. “B” light pole height = d / 3 (d is the distance from the light pole to the site’s symmetrical separation line)

The light pole in Area C is located outside the fence of the outfield and provides lighting for the outfield. “C” pole height = maximum projection distance of the lamp on the pole / 2

To sum up the above factors: the area of the baseball field; the lighting design; the number and way of arranging the light poles; the lamps used; it is the cost factor of the baseball field lighting.