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The technology of LED light source is becoming more and more mature, and the luminous lumen per watt is growing rapidly, which makes it reduce the price every year. Taking the 1W LED light source as an example, the price in the spring of 2008 is one-third of the price in the spring of 2006, and will fall to a quarter in 2006 in the spring of 2009. The massive market of LED green lamps and the continuous growth and demand for several years will be the super tsunami in the IC industry after the VCD, DVD, mobile phones and MP3s!
The high performance, long life and environmentally friendly performance of LED lamps are widely recognized.
LED high energy saving: DC drive, ultra-low power consumption (single tube 0.03 watts - 1 watt) electro-optical power conversion is close to 100%, the same lighting effect is more than 80% energy saving than traditional light source. Led long life: led light source is called longevity lamp. Solid cold light source, epoxy resin package, there is no loose part in the lamp body, there are no shortcomings such as filament light-emitting, heat deposition, fast light decay and so on.
LED life: The service life can reach 50,000 to 100,000 hours, which is more than 10 times longer than the traditional light source.
LED environmental protection: led is a green light source, and environmental protection benefits are better. There is no ultraviolet and infrared rays in the spectrum, low heat and no stroboscopic, no radiation, and waste can be recycled, no pollution, no mercury, cold light source, safe touch, is a typical green lighting source.
LED light source working characteristics The VF voltage of the LED light source for illumination is very low, generally VF=2.75-3.8V, IF is 15-1400mA; therefore, the output voltage of the LED driver IC is VFXN or VFX1, and the IF constant current is 15-1400mA. LED light source used in LED lamps has two types of low power (IF=15-20mA) and high power (IF) (200mA)). Low-power LEDs are mostly used for LED fluorescent lamps , decorative lamps and grille lamps; high-power LEDs are used for Home lighting, spotlights, underwater lights, wall washers, street lights, tunnel lights, car work lights, etc. The power LED light source is a low-voltage, high-current driving device. The intensity of the light is determined by the current flowing through the LED. If the current is too strong, the LED will be attenuated. If the current is too weak, the LED will be affected. Therefore, the LED is driven. Constant current power supply is required to ensure the safety of high-power LEDs and achieve the desired luminous intensity. In the field of LED lighting, to reflect the characteristics of energy saving and long life, it is very important to choose a good LED driver IC. Without the matching of good driver IC, the advantages of LED lighting cannot be reflected. Therefore, the LED lighting design needs attention to the technical details of the LED luminaire requirements for low-voltage driver chips:
1. The nominal input voltage range of the driver chip should meet DC8-40V to cover the application surface. The withstand voltage should be greater than 45V. The output voltage of the simple bridge rectifier will fluctuate with the grid voltage when AC12V or 24V input. Especially when the voltage is too high, the output DC voltage will be too high. If the driver IC cannot adapt to the wide voltage range, it will be broken down when the grid voltage rises, and the LED light source will be burnt.
2. The nominal output current requirement of the driver chip is greater than 1.2-1.5A. As the LED light source for illumination, the nominal working current of the 1W power LED light source is 350mA, and the nominal working current of the 3W power LED light source is 700mA. Larger ones require more current, so the driver ICs used in LED lighting must have sufficient current output. The design of the product must be such that the driver IC operates at 70-90% of the best working area of ​​the full negative output. Driver ICs that use full negative output currents have poor heat dissipation in the narrow space of the luminaire, which is prone to fatigue and early failure.
Indoor Rental Led Display Features:
1. LED indoor rental screen is moving towards small spacing and high definition, and small Led Display can show more content;
2. Air insertion and quick lock structure are adopted between screens, which are easy to disassemble and assemble, can be maintained in front and back, and can be transported by air box, fast and safe.
3. The module can be maintained before and after, and the single module can be disassembled for maintenance. When packing, there are positioning posts and strong magnets. There is no seam between modules.
4. The cabinet body is of die-casting aluminum structure, with elegant and beautiful appearance, light and thin weight and hard strength.
5. According to the requirements of the site, the angle can be adjusted inside and outside, inside and outside plus or minus 15 °, splicing into different shapes.
6. All aluminum structure, good heat dissipation, no fan, no noise.
7. The brightness can be adjusted. According to the indoor brightness, adjust the best light effect.
Indoor Mobile LED Display description: compared with the traditional dance scenery and lighting, the display is single and the vision is tired. It is difficult to bring the visual expectation and the enjoyment of the visual beauty to the audience. LED display is very easy to solve these problems. Shocking visual effect, active performance atmosphere, show more video content. The acquisition of these information is far greater than the effect of traditional dance scenery and lighting. The indoor mobile rental screen has developed from the original big spacing pixels p7.62, P6 and P4 to the small spacing pixels p2.976, p3.91 and p4.81. The cabinet size has also developed from the original model to the easy to distinguish and install models of 500m * 500mm and 500mm * 1000mm.
Structure: the box body is made of die-casting aluminum, with internal soft and hard links, external super five types of network cable and aviation plug links, and each box body is equipped with a quick lock.
Precautions: the screen body is often disassembled, and the edges and corners of the screen body are easy to bump. In the process of transportation, disassembly and installation, pay attention to handle with care. In the purchase process, let the manufacturer more with mask, bottom shell and the same batch of LED lights.
LED Wall Rental,Video Wall Rental,LED Screen Rental
Shenzhen Vision Display Technology Co,.LTD , https://www.ledvdi.com