The main features of the LED light source

High luminous efficiency: LED After decades of technological improvements, the luminous efficiency has been greatly improved. Incandescent, halogen light efficiency of 12-24 lumens / watt, fluorescent light 50 to 70 lumens / watt, sodium 90 to 140 lm / W, most of the power into heat loss. LED luminous efficiency will be improved to achieve up to 50 ~ 200 lumens / watt, and its light color is good, narrow spectrum, without colored filters can be sent directly visible.
Less power consumption: LED strip light power 0.03 to 0.06 watts, DC drives, single-tube drive voltage of 1.5 to 3.5 volts, the current 15 to 18 mA, reaction speed, in high frequency operation. Under the same lighting effects, power consumption is one-eighth of incandescent bulbs, fluorescent tubes half.
Long life: the radiation-emitting electronic light field, filament light easy to burn, heat deposition, optical attenuation and other shortcomings. The use of LED lamps, small size, light weight, epoxy resin, mechanical strength to withstand high shock and vibration, not broken. The average life of 100,000 hours. The light fades to the initial 50%. LED lamp life of up to 5 to 10 years, can significantly reduce lighting maintenance costs, avoid frequent lamp replacement.
Strong security and reliability: can precisely control the angle of light pattern and light, light color and soft, no glare; do not contain mercury, sodium and other potential health hazards of substances. Built-in micro-processing system to control light intensity, adjusting light way to achieve light and art.
Beneficial to the environment: LED light for the whole solid body, shock, impact resistance is not easy to break, waste recycling, no pollution. Small light source, can mix, easy to develop into a short small thin portable lighting products, but also easy to install and maintain.
Response time is short: incandescent millisecond response time, LED lights nanosecond response time.

LED lighting, energy-saving lamps to lead the wave of energy saving

In recent years, China's popular "power shortage" disturb, especially in summer electricity peak period is up, the power supply tension written swept the country. At present, the cost of lighting electricity consumption accounts for about 20%, thus, reducing lighting power consumption is an important way of parsimony, LED energy-saving lamps will come into being.
That the semiconductor light-emitting diode LED, LED energy-saving lamps with high-brightness white LED light source, high luminous efficiency, low power consumption, long life, easy to control, maintenance, safety and environmental protection; is a new generation of solid cold light source, color gentle, bright , rich colorful, low loss, low energy consumption, environmental protection, for families, shopping malls, banks, hospitals, hotels, restaurants and other public places for a long time lighting. Here, the characteristics of LED light for detailed introductions. (1) High luminous efficiency, improved efficiency LED light will reach 50 to 200 lumens / watt, and its light color is good, narrow spectrum, without colored filters can be sent directly to visible light, 90% of energy can be converted into visible light (80% of the ordinary incandescent electric energy into heat, only 20% of electrical energy into light energy). Currently, the progress of the world are stepping up efficiency LED light of the discussion, in the near future there will be greater luminous efficiency of its progress.
(2) low power consumption LED-tube Power 0.03 ~ 0.06 watts, DC drives, single-tube drive voltage of 1.5 to 3.5 volts, the current 15 to 20 mA, response speed, in high frequency operation. Under the same lighting conditions, power consumption is very incandescent bulbs, one fluorescent tube half thousand hours only power consumption of a few degrees (normal 60w incandescent seventeen hours of electricity consumption of an ordinary 10w energy saving lamps one hundred hours of electricity consumption).
(3) the use of long life light using semiconductor chips, no filament, LED lights, small size, light weight, epoxy resin, an acceptable high-intensity mechanical shock and vibration, not broken, even the life of 100,000 hours (the use of incandescent life of only one thousand hours, normal life expectancy as long as the use of energy-saving lamps eight thousand hours), the use of life up to 5 to 10 years. Reduce the use of capital units, but also can save a lot of energy, which energy is very scared of China, no doubt very important.
(4) Green solid and strong, low heat, ultraviolet and infrared light does not contain, do not produce radiation, cold light source, can be safely arrived in touch: can accurately control the light pattern and light angle, color temperature and light, without glare; LED for the whole solid light, shock, impact resistance is not easy to break. Built-in micro-handling systems to control light intensity, adjusting light way to complete the separation of light and art.
(5) green non-mercury, sodium and other substances may endanger the well-being, waste recycling, no pollution. Will not produce electromagnetic interference (ordinary lamp contains mercury and lead, elements, energy-saving lamps, electronic ballasts will produce electromagnetic interference). In summary, LED energy saving lamps have a very significant advantages, the implementation of China's LED lamps will help complete the purpose of energy saving. But there are still many problems to be the ideal treatment, for example, to increase publicity efforts to improve the popularity of LED knowledge, progress, technology to reduce capital spending to promote energy-saving LED lights to get consumer recognition and tolerance. We have reason to confidence, LED as a new energy-saving, environmentally friendly green lighting products on the market in the future shine!

LED lamps to replace incandescent effect continued: Global Policy Interpretation

According to the latest statistics, high-brightness LED market will be $ 8.25 billion in 2010, growing to $ 12.6 billion in 2011, the annual growth rate will reach 53%; which, LED lighting, number of pieces by the use of 4.8 billion in 2010, will increase 2011 12.4 billion, because the 2011 primary to replace traditional incandescent bulbs LED effects starting to show. After following the LED-backlit TV, LED lighting, LED industry will be driven by high growth applications. Although in 2010 the total lighting market, LED lighting, the proportion is not high, only 3.2% in value terms, however in the sense of high energy and reduce carbon, the world's major countries have set the LED lighting policy to actively promote the development of LED module
industry. DIGITIMESResearch analyst and project manager Linfen Hui analysis, global demand for LED bulb 596 million by 2011, significant growth to 2013 of 2.5 billion; street, since mainland China, the United States, Europe has been promoting in all major cities in demonstration project, estimated to be LED lights 2.2 million in 2011 to $ 9.8 million in 2013, a further drive the next few years to enhance the penetration of LED lighting. Major countries in the global policy to promote LED lighting, LED luminous efficiency improved significantly, and the estimated annual price of LED lighting will have dropped 20 to 30% of the space under the influence of Linfen Hui estimates LED lighting demand from 2009 to 2013 years will reach 97.4% CAGR, higher than the large size LCD with LED backlight CAGR of 62.6%, and the LED lighting market will reach in 2011 as $ 15.4 billion, the overall lighting market penetration for the first time in over 10%, 10.6%.

LED lighting health leader in environmentally friendly green

The pace of technological development, the green light to become a growing concern, both a low-carbon energy-saving and environmentally friendly lighting also has become the biggest test of the lighting industry, the emergence of the LED, to give people hope.
LED has been widely used in our lives, LED neon
and LED fluorescent believe we are not familiar with, because of its energy saving features and long life Rugged maintenance-free performance, urban lighting without it. People often complain about street light not bright enough or old bad repaired before long and bad, etc., while the LED lights appear timely for us to solve the problems of urban lighting, so that we can safely travel. The improvement of material life, people began to pay attention to their own lifestyle, fitting in the furniture when the lights in order to choose a suitable and hesitation, nice bright light is too strong a light bar, not good for the eyes and body, light a little weak right affect the sense of interior decoration, how to do it, you may wish to look at energy-saving LED lamp.
LED energy-saving fluorescent lamps that meet your requirements for style, but also satisfy your desire for health. With it you do not hesitate, it is adjustable color temperature and light softness almost no effect on the eyes, and different angles of light will bring a different feeling, it is durable, low-carbon products is in itself reduce carbon emissions give you a warm and comfortable light environment. It is also very energy-efficient, the use of electric field into light, saving power resources gave us a comfortable living environment. New style, high color, but also gradually integrated into every corner of life, such as a Christmas present out of the new.
LED lighting, not just the embodiment of health and environmental protection, or green lighting leader. Snow Bai Shi lighting is recommended that you choose healthy and environmentally friendly LED lights.

Power shortage, energy-saving products have become the "meat and potatoes"

Compared with ordinary fluorescent lamp, LED bulbs lamp energy saving, long life, safe and reliable. According to reports, a 15-watt fluorescent light with 40 LED fluorescent wap pass close to, but it's more than 50,000 hours service life is 5-8 times the normal fluorescent lamp. Although the LED lamp has many advantages, but the price of each one hundred and sixty seventy yuan will allow consumers to stay away? Lianzhong business manager Mao Yuehui optical calculations: a 15-watt LED lamp with a power less than 24 hours ordinary 40-watt fluorescent lamp for 40%. Electricity by industry 0.8 dollars each, LED fluorescent year, saving 210 degrees can save electricity more than 160 yuan, just the purchase cost of LED lamp. And some textile weaving business, shopping malls, hospitals and hotels and other high demand for lighting the place, the amount of fluorescent light is hundreds of branches, some large amount of textile enterprises and even up to thousands of sticks. These locations are used in ordinary fluorescent LED fluorescent replacement, energy-saving effect is very obvious.

LED lighting market focus gradually transferred to the home lighting market

Prior to the use of LED lighting often, mostly special purpose lighting and landscape lighting, these lamps in the lighting market in only a very small part of the future will serve as the lead LED gradually penetrate into the home lighting market in the past. With very different domestic lighting, landscape lighting, less demanding on the brightness, the lamp, for example. Most government procurement, price sensitivity is quite low, from this point can be seen on the market penetration of home lighting in one of two technical factors, the second is price. In indoor lighting, luminous efficiency, color rendering are all technical threshold.
Lighting products throughout the production process to low-power white light products, for example, the chip part of the total cost of the product is relatively small. Light manufacturing and marketing chain is also high value-added sectors, has not been established because the current marketing channels, channel costs account for about 25% of the total cost. In other words, chip, manufacturing, sales channels, including the proportion of the current cost of similar, which is currently in the field of LED lighting, traditional lighting companies slightly ahead of LED downlight business reasons.
According to the "2010-2015 China's semiconductor lighting (LED) industry investment analysis and forecast report" shows that with the steady improvement of luminous efficiency, the higher the efficiency, the backlight light source using the fewer number of LED chips, the same, LED chip The unit will continue to decline, mobile phone LCD panel with LED backlight also exists in this situation. In contrast, the family of LED general lighting market will continue to expand within a longer period of time. Unique advantages of LED lighting will be received, the entire lighting market is expected to be further expanded.
With the gradual penetration of the future to deepen LED, when the time to achieve 100% penetration of the market on a large scale of new capacity will be directly reflected in home lighting. Ordinary consumer demand is very high optical quality, the spending habits of the various regions are not always the case, therefore, extending the diversity of products, improve product quality is also a future direction of enterprise development.

Two control the brightness of LED

One is to change the current flowing through the led, the general LED tube to allow continuous current 20 mA or so, there is saturation in addition to the red LED, the other LED brightness is essentially proportional to the current flow.
Another method is to use the human visual inertia with a pulse width modulation method to achieve gray scale control, that is, periodic changes in pulse width (ie duty cycle), as long as the repeated cycle of light short enough (ie, refresh frequency is high enough), the human eye can not feel light-emitting pixels in the jitter. As the pulse width modulation is more suitable for digital control, so widely used computer to provide the RGB LED light today, almost all of the LED.
LED control system usually consists of the main control box, scan control board and display device has three major components. Main control box from the computer's graphics card to get a colored screen pixel luminance data, then re-assigned to the scan plate number blocks, each scan LED screen on the control board is responsible for a number of rows (columns), and each row (column) on the LED display control signal is transmitted with a serial manner. There are two serial transmission of display control signals: one is the centralized control panel scan grayscale pixels, scanning from the control panel box of the line pixel brightness value decomposition (ie, pulse width modulation), Then the opening of the line LED signals in pulses (light 1, off 0) by using serial transmission line to the corresponding LED on the control whether light. Devices used in this way less, but the serial transmission of data volume, because in a repeat cycle of light, each pixel in the 16 gray scale requires 16 pulses, required under the 256-level grayscale 256 pulses, the device operating frequency restrictions, can only do 16-level grayscale LED screen.
Another method is to scan the contents of the board is not a serial transmission switching signal for each LED but the brightness of an 8-bit binary value. Each LED has its own pulse width modulator to control the on time. Thus, in a repeating cycle of light, each pixel in the 16 gray scale only four pulses, 256 gray scale only 8 pulses, greatly reducing the frequency of serial transmission. In this method of decentralized control LED gray can be easily controlled with 256 levels of gray.