A floodlight is an artificial light with a wide beam and a high output. Floodlights provide the lighting for outdoor playing fields when an event runs in low light, and for parking, entrances and perimeter security. More focused kinds are used as stage lighting at concerts and plays, and floodlights can also light a building's facade at night.
The lamps
Metal-halide lamps were the usual choice for sports lighting until white LEDs arrived, and sodium-vapor lamps were also widely used because they produce more light per watt. Both have largely been replaced by LED floodlights.
Why LED
LED floodlights are now bright enough to light large sports fields. The main advantages in this job are lower power consumption, a longer life, and instant start-up. With no warm-up period, there is less delay in a game after a power outage.