What is the difference between LED flood light and LED flood light | high mast led floodlight
LED floodlights are also called spotlights, spotlights, spotlights, etc. They are mainly used for architectural decoration lighting. And commercial space lighting, the decorative components are heavier, and the appearance is round or square, because it usually has to be tested Considering the reason of heat dissipation, there are still some differences between its appearance and traditional floodlights. LED flood light classification: 1. Rotationally symmetrical shape The luminaire adopts a rotationally symmetrical reflector, and the symmetry axis of the light source with rotationally symmetrical light distribution is along the reflector axis Line installation. The iso-intensity curves of this type of lamps are concentric circles. When this type of spotlight is illuminated by a single lamp, the illuminated surface Obtain an elliptical spot with uneven illumination; however, when multiple lamps are illuminated, the spots are superimposed on each other, which can produce satisfactory Lighting effect. For example, hundreds of rotationally symmetrical floodlights are commonly used in stadiums, which are installed on high towers around the stadium. Above, get high illuminance, high uniformity lighting effect. 2. Two symmetrical plane shapes The iso-intensity curve of this type of projector has two symmetry planes. Most of the lamps use symmetrical cylindrical reflectors, and The linear light source is installed along the cylindrical axis. 3. A symmetrical plane shape The isobaric intensity curve of the luminaire has only one symmetry plane (Figure 2). The lamps are made of asymmetric cylindrical reflectors Or a symmetrical cylindrical reflector plus a grid that restricts light. The most typical is the sharp cut-off block retracted light distribution. This kind of light A single lamp with strong distribution can obtain a more satisfactory illuminance distribution. 4. Asymmetrical shape The iso-intensity curve of this t
Read More
Where are the advantages of LED stadium lights | led stadium floodlight
LED lighting and control can improve TV broadcasting Due to its particularity, the sports lighting system has special requirements for lighting. In the early days, we used incandescent lamps, and later "metal halide lamps", and then to today's brilliant LED sports lighting, which is played by TV broadcasting. important role! From amateur games to the Premier League, LED enhances television broadcasting by eliminating stroboscopic slow-motion playback (a problem that is common with metal halide lamps). Equipped with an advanced LED sports lighting system, these clips can now be played without flicker at a speed of 20,000 frames per second, so the audience can capture every second of the replay in detail. When LED sports lighting is used to illuminate the playing field, because LED lighting can strike a balance between warm and cool colors, the image appears brighter and clearer on the TV. There are almost no shadows, glare or spilled light, so the movement remains clear and smooth. The LED system can also be adjusted according to the venue of the game, the time of the game, and the type of game broadcast. LED system can enhance fans' experience in the game With the help of the LED sports lighting system, the audience has a better experience, which not only improves the viewing of the game, but also increases the audience's participation. The LED has the function of being turned on and used immediately, and the lights can be adjusted immediately during the half-time break or during the intermission of the game. Imagine if your favorite team throws the buzzer 2 seconds before the end of the field, the timer just goes to 0 seconds, the lights are on and the ball hits, what the reaction of the fans in the stadium will be. The lighting engineer can use a controllable LED system to tailor this moment and boost the morale of the players. In turn, fans will feel that they are part of the game. Advanced lighting system can reduce opera
Read More
LED display control system control card classification | sports led display
There are many types of control cards on the display, and there are many companies that produce control cards. Simply put, it is divided into: full-color synchronous card asynchronous offline card full-color video offline card With the rapid development of LED display screens in the past two years, the market for LED control cards has also become broader, especially the new USB flash drive LED control cards that have just been launched in 2009 are used the most, which can be connected to a computer via a serial port or can be transmitted by a USB flash drive. Information, computer-saving, wiring-free, analog clock support, pipeline frame, U disk LED control card can save computers and wiring. Type C card 1. It supports various indoor, outdoor, semi-outdoor single and double color display boards with 4 scans, 8 scans, and 16 scans. One card can be set arbitrarily. 2. It supports the function of running water frame and analog clock, which makes the display content more prominent. 3. The maximum controllable range is 114688 points in single color, and the number of double-color points is halved. At the same time, it has built-in 4 08 ports and 4 12 ports, which can be expanded to 8 ports. 4. Display function: support text, picture, animation, EXCEL form, time, temperature, reverse (positive) timing, etc. 5. It can be used to make door head screens, poster screens, car screens and other various types of screens. 6. Set the lock screen function, built-in 4 groups of time switch machine periods, which can be set and used arbitrarily. LED control card LED control card 7. It has the dual functions of serial communication and U disk inputting information. 8. Support one U disk to manage multiple display screens, which is convenient for centralized management of multiple screens. Type E card 1. Support 4 scans, 8 scans, 16 scans, support various indoor, outdoor, semi-outdoor single and dual color display boards, one card can be set arbitrarily. 2. The maximum
Read More
Five ways to troubleshoot LED display | led pedestrain light
If the LED display fails, it will definitely cause trouble to the insiders. But trouble is to solve, but how to solve these problems? Today, let’s learn about 10 ways to troubleshoot LED displays. 1. The display screen does not work, and the green light of the sending card flashes (made into a retractable type) 1. Failure reason: 1) The screen has no power supply; 2) The network cable is not connected well; 3) The receiving card has no power supply or the power supply voltage is too low; 4) The sending card is broken; 5) The signal transmission intermediate device is connected or has a fault (such as: function card, optical fiber transceiver box); 2. Troubleshooting method: 1) Check that the power supply of the screen body is normal; 2) Check and reconnect the network cable; 3) Ensure that the DC output power supply of the power supply is within 5-5.2V; 4) Replace the sending card; 5) Check the connection or replace the function card (optical fiber transceiver box); 2. The display does not work, and the green light of the sending card does not flash 1. Failure reason: 1) DVI or HDMI cable is not connected well; 2) There is no setting for copy or extend mode in the graphics card control panel; 3) The software has chosen to turn off the power of the large screen; 4) The sending card is not inserted in place or there is a problem with the sending card; 2. Troubleshooting method: 1) Check the DVI cable connector; 2) Reset the copy mode; 3) The software chooses to turn on the power of the large screen; 4) Reinsert the sending card or replace the sending card; 3. It prompts "the big screen system is not found" when starting up 1. Failure reason: 1) The serial port or USB cable is not connected to the sending card; 2) The computer COM or USB port is broken; 3) The serial po
Read More
Lightning protection knowledge of LED traffic lights |200mm led traffic light
Walking on the streets and alleys of urban roads, the most familiar thing is the alternating flashing of various traffic lights. Busy cars moved forward and stopped regularly amid the flashing of red, yellow and green lights. The traffic signal lights erected on the pillars of the intersection are to promptly indicate relevant information to the passing vehicles. Because of its high erection position, it is easy to be damaged by direct lightning. The power line is introduced by the signal control machine, and there is no signal line. There is a threat of direct lightning strike and power line overvoltage. Therefore, it will directly strike over voltage and power line. Voltage is the focus of protection. The pillars of the traffic signal lights are installed with current-limiting lightning rods for direct lightning protection. The top of the bracket and the base of the current-limiting lightning rods must ensure reliable electrical and mechanical connection. The bracket itself is grounded or the 40×40 flat steel is connected to the grounding grid of the bracket frame itself. The grounding resistance must be less than 4 ohms. Use over-voltage protectors as power protection at the power leads of traffic lights and signal controllers, and pay attention to waterproof, moisture-proof, and dust-proof. The over-voltage protectors are connected to the grounding pole of the main frame with multiple copper wires of no less than 25mm2, and the grounding resistance is less than 4 ohms. Grounding protection. For a standard crossroad, the pillars and front-end equipment are scattered, and it is difficult to achieve single-point grounding. In order to ensure the equipment working grounding and personal protective grounding, only vertical grounding bodies are welded under each pillar. The mesh structure method is the multi-point grounding method, which is mainly aimed at the lightning protection requirements such as the gradual discharge of the incoming waves. To ensure pers
Read More