【 Weak current College 】 LED lighting product features and benefits of 】

Since 1968 the first LED begins to enter the market, has been in operation for over 30 years. With the new material development and process improvement that LED to the highlights and full color. Gan substrates for blue LED, is extend LED application areas. Currently, LED the main application fields, including big-screen color display, lighting, laser, multimedia, imaging, LCD background light sources, probes, traffic signal instruments, optical fiber, satellite communication, Ocean optical communication and graphic recognition, etc., but is still mainly used for lighting and display.
LED by superconducting luminous Crystal produces ultra high strength light emits heat rarely, unlike incandescent lamp that waste too much heat, unlike fluorescent lamps, due to the high energy consumption and produce toxic gases, like neon lights that require high voltage and easily damaged. LED has been internationally recognized as a new generation of environmentally-friendly high-tech light source.
LED with highlights efficacy, than the traditional neon save power above 80%, so work is safe and reliable. LED incandescent tungsten light changes and energy-saving lamps triphosphor luminescence of principle, and the use of electric light. LED light source has a long life, high light efficiency, no radiation and low power consumption characteristics. LED spectral almost all concentrated in the visible light spectrum, its luminous efficiency of up to 80% ~ 90%. The LED and the ordinary incandescent lamps, spiral energy-save lamp and T5 tricolor fluorescent lamp, the results show: ordinary incandescent light efficiency for 12lm/W, life expectancy is less than 2000h; spiral energy-save lamp's luminous efficiency for 60lm/W, life expectancy is less than 8000h; T5 tricolor fluorescent lamp luminous efficiency for 96lm/W, life approx. 10000h; while the diameter is 5 mm white led's luminous efficiency for 20 ~ 28lm/W, life can be greater than 100000h.

(1) LED lighting products

In 1879 Edison invented incandescent carbon filament, the lighting technology is entering a new era. Recalling the history of the 20th century, lighting, fluorescent lamps, mercury lamp, high/low pressure sodium lamp, metal halide lamps, compact fluorescent lamps, high-frequency electrodeless fluorescent lamps and microwave new light source, such as sulfur lamp. Incandescent lamps come out from their day just with congenital defects, tungsten heating power, light bulbs, and easily breakable to electric shock. Fluorescent energy saving electricity than incandescent lamps, though, but the adverse human eyesight, the mercury lamp or harmful to human health and the environment. Real change occurs caused lighting technology or LED. Compared with conventional lighting technology, LED by the largest difference is the different structures and materials, it is a way to power into visible semiconductor, upper and lower layers are fitted with electrodes with conductive materials, can glow materials in two electrode layers, light color according to the nature of the material.
LED cold light source belonging to solid, smaller, lighter weight, stronger structure and operating voltage low, long service life. Defined in accordance with the usual luminous efficiency, LED light-emitting efficiency is not high, but since almost all the LED's Spectra focuses on visible band, efficiency of up to 80% ~ 90%. But equally luminous efficiency of incandescent lamps visible efficiency of only 10% to 20%. Single LED power General 0.05 ~ 1W, through clusters can meet different needs.
LED lighting products is the use of LED light source as created by the lighting equipment, lighting areas led application products are attracting the world's attention. LED as a new type of green lighting products, must be the future development trend of the 21st century will go to LED as the representative of the type of lighting times.

(2) Advantages of LED light sources

① new green light source: LED use cold light source, glare, no radiation, use does not produce harmful substances. LED operating voltage low, the use of DC drive mode, ultra low power consumption (single tube 0.03 ~ 0.06W), electro-optical power conversion close to 100%, in the same lighting energy-saving than traditional light sources in more than 80%. LED environmental benefits better, there is no UV spectrum and infrared, and waste recycling, no pollution, and does not contain mercury, it is safe to touch, belong to the typical green lighting.
② long life: LED cold light source for solid, epoxy, anti-vibration, lamp body no loose parts, there is no easy burning filament glows, thermal deposition, light failure and so on shortcomings, the service life of up to 6 000 ~ 10, 000 hours, the traditional lamp service life of more than 10 times. LED performance and stability,-30 to + 50oC environment properly.
③ number transformation: led light source can use red, green and blue trichromatic theory, under the control of the computer technology makes three colors with 256-level grayscale and any mixed, you can produce 256X256X256 (i.e. 16777216) color, formed a different combination of light and color. LED color changing combination of light, you can achieve a variety of effects and a variety of images.
④-Tech: and traditional light glow effect compared to the led light source is low-voltage microelectronics products, successfully combines computer technology, network, communication technology, image processing technology and embedded control technology. Traditional led chip size used in, and for 0.25mmX0.25nm lighting with LED's dimensions are generally above the 1.0mmX1.0mm. LED the work contains molding table, inverted pyramid structure and flip chip design to improve their efficiency, thereby making more light. Led packaging design innovations include the high conductivity of metal block basement, flip chip design and raw disk casting-lead frame, and so on, using these methods are able to design a high power, low thermal resistance of the device and the device of illumination than traditional LED illumination products.
At present a typical high flux LED devices can produce several lumens to dozens of lumens of light flux, the updated design can be a device integration more LED, or in a single Assembly in the installation of multiple devices, therebyMake output lumens number corresponds to small incandescent lamp. For example, a high power of 12 chip LED devices can output mono 200lm of light energy, consumes power in 10 ~ 15W.
LED light source of the application is very flexible, you can create points, lines, face various forms of thin and short product; LED control very easy, just adjust the current, can adjust light; a combination of different light colors varied, with timing control circuit, can achieve a variety of effects. LED has been widely used in various lighting equipment, such as battery-powered flashlight, micro-voice-activated lights, safety lights, outdoor lighting of roads and indoor stairs as well as buildings and mark continuous lighting.
White led is LED from the identity function to lighting features a substantial step forward. White led, closest to the Sun will better reflect the true colors shining objects, so from a technical perspective, LED white led is undoubtedly the most sophisticated technology. At present, the white LEDs are beginning to enter the number of application areas, emergency lights, flashlights, Flash and other products have been introduced, but the price is very expensive, so hard to spread. White led universal assumption that price decline, but prices must have a certain white LED market size is possible, the integration of the two ultimately depends on technological progress.