年份：2013年

LED lighting dimming system in the future development

LED dimming is best to use PWM dimming using PWM dimming, you can switch on the wall to install a simple PWM generator, and then use the potentiometer to control the PWM duty ratio to achieve dimming. But if the bright lights should switch off, then you need to add a pair of lines. Therefore not compatible with the original wall of the thyristor switch leads. The original thyristor switch only two leads, it can be can dimmer switch. This advantage is very difficult compatible. But in fact, the most commonly used real light is dimming lamp or floor lamp, dimmer switches that are installed in the supply line is not a wall, it just do not care to take advantage of the two leads of the wall. In other words, PWM dimming can be applied directly dimmable lamp.

LED lighting manufacturers
LED lighting manufacturers

Segmented dimmer switch
Taiwan has launched a company called EZ-Dimming a four paragraphs of GM6182 switch dimming regarded as a good solution. Only use ordinary light switch on the wall will be able to achieve dimming paragraph 4, the first to open the full brightness, the second opening is 60% brightness, the third opening is 40% brightness, the fourth opening of 20% brightness. The advantage of this system is to use an ordinary wall switch dimming. And its power factor up to 0.92 or more. Did not produce interfering signals into account. Disadvantage is not continuous dimming. There are a number of operational problems.
Remote control dimmer
Infrared remote control for LED dimming. This of course is the ideal solution. Can switch lights, and the use of a continuous PWM dimming. Disadvantage is the high cost, there is no uniform standard, only for high-end residential.
In fact, we think we should come back to the main purpose of dimming should be. All previously mentioned dimming purpose is to meet the home for people in different contexts require different light intensity. For example, when watching television may be darker, reading time may be brighter. These are mostly in the residence. Few offices, shopping malls, factories, schools, install dimmer lights. And most of these places is installed fluorescent lamps, energy saving lamps, it is impossible or difficult to achieve dimming continuous dimming.
Epoch-making for energy-saving and dimming
Ever since mankind realized that we must do everything possible energy conservation in order to solve the urgent problems atmospheric warming, how to reduce lighting electricity as an important issue on the agenda. Because lighting electricity for 20% of total energy consumption. Fortunately, there have been energy-efficient LED, LED itself five times more energy-efficient than incandescent than fluorescent lamps, energy saving lamps have about twice, but unlike fluorescent lamps, energy saving lamps as mercury. If the dimming can also be energy efficient, it is very important energy saving means. But in the past all light sources are not easy to achieve dimming, and easy dimming the LED is a great advantage. Because in fact, on many occasions without lights or at least not so bright, but it was very bright light, such as midnight to dawn hours of the street; subway cars to the suburbs from the ground open ground in the car lights; more common is near a sunny window when the offices, schools, factories and other fluorescent lamps are also opened there. These places have to waste a day do not know how much power! Past because of high pressure sodium lamps, fluorescent lamps, ceiling lamps, energy saving lamps can not dimming, can only forget. Now switch to LED later, you can freely adjust the light, which can save energy completely down. So for lamp dimming, the family is not the main wall of the dimming applications, the market is very small. Instead, lights, offices, shopping malls, schools, factories demand dimming is more important occasion, not only a huge market, and saving considerable. These occasions do not need a manual dimming but auto-dimming, intelligent dimming.
　Dimming LED street lights
Generally, street lights after midnight there is nothing useful, so the usual practice is to turn off the lights after 12:00 or the opening half brightness. But the most reasonable approach is based on the traffic lights to control the brightness, or even fully adaptive control of brightness.
In order to achieve this intelligent dimming, is actually very simple. As long as the value of the region’s traffic counts curve input to a microcontroller, according to this curve gives the PWM dimming signal to the constant-current drive source can be achieved.
Photosensitive automatic dimming LED lights
In strong sunlight in order to reduce unnecessary lighting, you can use light-sensitive auto-dimming LED lamp (or any other LED lamps).
Photosensitive element is the role of feelings around the sun, if the sun is stronger then outputs a PWM signal to all close to daylight LED lamps (such as LED fluorescent lamp), put their brightness dimmed. A dimming signal generator can adjust many LED lamps, as long as the source of these lamps constant current driver with PWM dimming control interface. This dimming system itself, efficiency up to 92% or more. But there is no line and the wall triac dimmer compatibility issues. This fully automatic adaptive energy-saving dimming any fluorescent lamps, energy saving lamps, high pressure sodium and other gas discharge tube can not be achieved, but it is LED lamps best.

How to Install LED panel lights

LED panel light is a beautiful upscale indoor lighting, its external borders made from aluminum by anodic oxidation, the light source is LED, the entire lighting design is beautiful and simple, luxurious atmosphere, both good lighting effects, but also gives brings a feeling of beauty.

How to Install LED panel lights
　1, Can be mounted on ceilings, walls and mounting surface;
2, Can be suspended from the ceiling or mounted beneath the body. When mounted on a white ceiling, the entire ceiling was the same color, very beautiful, clean and coordinated;
LED panel lamp uses high voltage design (AC85-240V/50-60Hz), can be used in the world; power LED with isolated power supplies, constant current or constant voltage drive, power supply, high efficiency, the power clean, stable performance, safety reliable;
LED panel lights are manufactured using similar LCD TV backlight technology, a new type of surface light source, the light is soft, appearance, has been widely favored by European and American businessmen, a large number of foreign firms are in Buy good quality, good service, good prices and supply panel light products business;
LED panel lights seem just a simple lighting models, but because of its high market position determines the customer’s quality requirements for this product is extremely harsh, plus product itself comes to materials, thermal, optical, structural, hardware, electronics and other fields, the company usually does not complete development team and sufficient experience in the development and subsequent supply chain management capabilities, difficult to really successful development, coupled with knowledge of the market requirements are not clear, so a lot of development costs in return on invested only a customer does not endorse products.
Eneltec was founded in 1982, devoting nearly 30 years to the development and manufacture of lighting products, including electronic ballast, T5 adapters and LED products. Eneltec, with its powerful technology and excellent marketing system, working on providing high quality service to the customers, is growing more and more powerful in lighting industry.
ENELTEC care so much about the brand and also the satisfactory experience of our customers. So we always put a lot of efforts on the products quality and after sales service. We emphasis on applying for the necessary certificates for our target market , controlling every step of the productions , testing before delivery and tracking each order after delivery.

LED chips which everyday problems encountered

A. Forward Voltage drop the dark light
A: A is the electrode and the light emitting data ohms touch, but touch the resistance, mainly by the data substrate low concentration or the electrode mutilated formed.
B: one kinds is the electrode and Data as non-ohm touch, first and foremost occurred in the the chip electrode preparation the process of transpiration first-layer electrode O’clock’s extrusion print or clip printed, spread azimuth.

led light for home
led light for home

Else wrapper process in can also be formed Forward pressure decreased, the primary reason there are silver adhesive curing is not sufficient, bracket, or chip electrodes pollute such as the formation touch resistance is large or touch resistance is unstable.
Forward pressure decreased of the chip in the fixed voltage quiz when, after the chip’s current is small, and then embodies dark spots, there is one kinds dark light representation is the chip self-luminous power is low, forward voltage drop to normal.
2. Difficult pressure welding: (foremost there are to fight non-stick, the electrode falling, punch through electrode)
A: to fight non-stick: The primary because the electrode appearance oxidation or there is glue
B: There are with the light emitting Data touch is not strong and thicker wire bonders layer is not strong, during which the in order to thickened layer of Drop-based.
C: punch through Electrode: usually associated with chip data relevant, data brittle and strength is not high’s Information Yi punch through electrode, usually GAALAS Data (such as high red, infrared chip) representing an GAP Data Yi punch through electrode,
D: pressure welding Debugging should Soldering Temperature, ultrasonic power, ultrasonic moments, pressure, golden goal big and small, stents positioning and other carry on adjustments.
3. Light-emitting Color distinction:
A: the same an chip light-emitting colors have a significant difference between the first and foremost is because the epitaxial wafers information doubt, ALGAINP four element data is selection of quantum layout of the is very thin, growth is the very difficult to ensure that the regional component jointly. (Component resolution band gap, the band gap of the resolution wavelength).
B: GAP yellow-green chip, light-emitting wavelength of will not have a large error, but the because the human eye right to this wave band color sensitive, is very simple find out yellowish, migraine greenish. Because the wavelength yes epitaxial wafers data resolutions of the, regional the smaller the, showing color error concept of the smaller the, so in the M / T job in the there are nearby Selecting Method Of.
C: GAP red chip and some light color is a partial orange, because its light emission mechanism is a direct leap. Affected by impurity concentration affected, the current density intensify when the, prone to impurity energy level offset and light-emitting plump, the light emitting yes beginning turns orange-yellow.
Four. Floodgate Fluid effects:
A: a light emitting diode in the normal voltage can not be turned on, when the voltage height to a certain extent, the current sudden change.
B: occurred floodgate fluid appearances reason is the light-emitting INFORMATION epitaxial wafers grow up O’clock presents a reverse mezzanine, have this presentational LED in the IF = 20MA O’clock quiz the forward drop of there are hiding Xing, in the use of process is the out of north and south pole Voltage will not do large, reflected off, the available test information instrument from transistor Tracer test curve, but also to go through a small current IF = 10UA lower forward voltage drop to find that a small current forward voltage drop significantly too large, then the be able to yes The doubt formed by the.
5. Reverse Earth Leakage:
A: reason: epitaxy information, the chip manufacturing, equipment, encapsulation, quizzes typically 5V under the reverse leakage current is 10UA, also be able to fixed reverse current under the quiz reverse voltage.
B: not the same type of LED reverse features big difference: P Green, Pu Huang chip reverse breakdown can reach over one hundred volts, while S & P chip in ten to twenty volts.
C: epitaxy the formation of’s Reverse Leakage @ foremost by the PN knot internal layout of the shortcomings formed by the, chip manufacturing the process of next to the surface was corroded will not do or there are silver glue silk buildup of In the measured noodles, strictly prohibited to use organic solution is dispensed silver glue. In order to avoid silver glue After a capillarity appearances climbed to the knot zone.

How to test LED lighting product life

Idemitsu products and maintenance of light is LED lighting product life indicators important concern factor. In addition, LED lighting product characteristics and application areas to consider starting life of the product evaluation, there are some differences, for example, in addition to lumen maintenance in addition, LED lighting products and maintain color quality, etc., our group also to carry out research work in this area with a view of the performance and lifetime of LED lighting products do a more reasonable assessment. Table 1 also gives the relevant country or region in the LED lighting product life-related indicators considerations.

LED light lifetime
The United States in 2011 released the IES TM21 “ProjectingLong Term Lumen Maintenance of LED Light Sources” ‖ standard, used in LED packaging, LED arrays, external drive control of the LED module. The standard provides a use of IES LM80 test data to an exponential decay of flux decay model LED light source projected lumen maintenance approach.
① The intervals of not more than 1000h flux test, the test time is not less than 6000h;
② The 0h flux as a benchmark, calculated at each time point lumen maintenance;
③ The exponential decay model φ (t) = β · exp (- αt) lumen maintenance trend curve fitting, if the test does not exceed the total time 10000h, take the last data point for the fitting curve 5000h original data; if the total test time More than 10000h, then take the total test time is after the 50% test point fitting curve raw data;
④ According to the result of curve fitting calculations α and β values??, on the basis on the basis of L70 = ln (β / 0. 7) / α calculating light L70 life (life time if projected from the total test time is greater than 5.5 times (or six times), then take the total test time of 5.5 times (or six times) for the projected life time)

LED lighting fixtures What are the advantages compared to the traditional

1: Energy conservation: LED spectrum almost all concentrated in the visible light spectrum, the luminous efficiency of up to 80-90%. Experiment ordinary incandescent lamp, spiral energy saving T5 fluorescent lamps and emblems Bo did some comparison results showed that: ordinary incandescent light efficiency 12lm / w, life expectancy is less than 2000 hours, spiral energy saving lamp luminous efficiency of 60lm / w, life of less than 8000 hours, while the LED is 120lm / w, life of 50,000 hours. It was also predicted that the future of the LED lifetime cap will be infinite.

LED lighting
LED lighting

Additionally LED also has other advantages, high quality of light, almost no radiation, typical of the green lighting; reliable and durable, very low maintenance costs and so on. Because LED light source also has the above other solid unmatched features, 10 years after the LED lighting industry will be the mainstream light.
2: LED’s operating voltage is low: normal LED operating current of only 10mA, high brightness but also 1A. LED in the production process do not add the “Mercury” and does not need inflated, no glass shell, impact resistance, shock resistance, unbreakable, easy to transport, very green, known as the “green energy.”
3: Long life: LED small size, light weight, the shell is epoxy encapsulated, not only can protect the internal chip, but also has the ability to light condenser. LED life generally in the 50,000-100,000 hours in between, because the LED is a semiconductor device, even frequent switching, it will not affect the service life.
4: The response speed: LED has reached the minimum response time 1 microsecond, more than a few milliseconds in general, the response time of ordinary light is about 1/100.
5: High luminous efficiency: incandescent, halogen light efficiency is 12-24lm / w (lm / W), fluorescent light efficiency of 50-70lm / w, sodium lamp luminous efficiency of 90-140lm / w, large Part of the power into heat loss. The LED luminous efficiency can be achieved through improved 50-200lm / w, and the light color is good, narrow spectrum, can be sent directly without filtering colored visible light.
6: LED components are small: more user-friendly layout and design of various devices, but also better able to achieve in night lighting “saw the light but not light” effect.
7: LED light energy is highly concentrated: concentrated in a smaller wavelength window, high purity.
8: LED light-emitting strong point: light attenuation is much lower than conventional light sources.
9: LED low voltage DC to drive: a load of small, weak interference advantages of the use of environmental requirements are lower.
10: You can better control the emission spectrum consists of: enabling well for Museum and Exhibition in part or accent lighting.
11: You can control the semiconductor light-emitting layer, a semiconductor material the size of the forbidden band width: thus emit various colors of light, and higher saturation.
12: high color: not cause injury to the human eye.

LED indoor lighting conditions analysis

Throughout the world, the development of LED industry, current LED outdoor lighting and landscape lighting has been relatively mature, but on the other hand, LED interior lighting still in its infancy in many countries, especially in China. But as the state has promulgated” road map” to phase out incandescent after, I believe in the next few years, LED interior lighting development will be an explosive leap. LED interior lighting ever before will be good prospects.

led indoor light
LED lighting on a large scale into the interior lighting market, the following conditions is essential.
1.LED lamps improve light efficiency when a low color temperature 4,000 K color temperature is usually below the low of choice for indoor home lighting. Warm white make the whole environment more warm and relaxed; rather cool white is giving clean, efficient and bright feel, more suitable for office and outdoor lighting.
2.LED lamp prolong life, improve system reliability. In general lighting applications, LED’s overall efficiency, service life and reliability can be optimized by the system can be improved.
3.LED light: compact, efficient, and output power of a variety of colors to choose from.
4 Power Conversion: the AC, batteries and other power conversion efficiency as a safe low voltage, constant current power supply.
5 control and drive: the use of electronic circuits to achieve constant current LED driver and control.
6 Thermal Management: To achieve a longer life, control the LED junction temperature is very important, thermal analysis is also essential.
7 optical elements: a lens, reflector or focusing the light guide plate is necessary in the target area of the optical element.

LED Tunnel Light supplier competitiveness

2009 LED tunnel lights market is concentrated nature of the market share, the top 10 companies account for about 70% market share. Light side, imported light LED Tunnel Light accounted for 90% of the market, including CREE, Philips, Osram and Taiwan Epistar accounted for almost half of the country. In next few years, LED tunnel lamp market will be dominated by a few companies, who occupy a major share of the market. But with the domestic high-power LED chips gradually expand the scale, in the future; this situation is expected to improve, thereby reducing production costs.

led tunnel light
led tunnel light

2009 domestic LED tunnel lights market has overall improvement in the technology, the price gradually declined, city of ten thousand and relevant government subsidy policy under the influence of other factors, sales and sales are reaching record highs. According GLII survey data show that the market scale reached 180 million yuan, compared to 4,000 million in 2008, an increase of over 300%; domestic LED tunnel lights sales is about 80,000 units, estimated 2010 shipments will exceed 12 million units, the market size is expected to exceed 300 million yuan.
According GLII statistics, as of the end of 2009, China’s existing rail tunnel of 6876, with a total length of 3,670 kilometers, it is the world’s first; Chinese total number of 1782 highway tunnel, with a total length of 704 km, it is the world’s largest country road tunnel . The past two years is still an annual growth rate of about 200 km. According to “Road Tunnel Ventilation Lighting Design Specification (JTJ026.1-1999)” estimates, the distance in tunnel lights installation is 1.5 m, symmetrical installation, this methodology domestic traditional tunnel lights mounted lights about 6 million, the market capacity is about 12 billion yuan. According to an annual growth of 200 kilometers in length, tunnel lights for an annual increase of about 300,000, the new LED tunnel lights potential market size of 600 million. As of the end of 2009 Shanghai, Guizhou, Shaanxi, Jiangxi, Zhejiang, Yunnan, Chongqing, Anhui, Guangdong, Fujian, more than 10 provinces and cities have begun to apply or promote LED tunnel lights.

LED lamps pay attention to maintenance

led light

1, after you purchased LED lamps, you should not install at first, you should carefully read the luminaries mark and read installation manual, then instructions for the installation, and use lamps, otherwise they may be dangerous.
2, the problem promptly replaced
The light source parameter flag provides timely replacement of aging of the lamp. If you found the tube ends redness, lamp black, or a shadow, the lamp is not lit, the lamp should be replaced to prevent ballast burnout insecurity.
3, do not change the structure of the lamp
Cleaning and maintenance should pay more attention. Not to change the structure of the lamp, and do not easily replace the lamp unit, after the end of the cleaning and maintenance, the lamp should be installed as well, not to leave, in order to prevent to install the wrong equipment lighting components.
4, do not frequent switching
Try not to switch the lamp frequently, because the lamps in frequent start the moment, the current through the filament is greater than the normal work of the current, making the filament temperature rise sharply accelerated sublimation, which will greatly reduce its life, so to minimize the lamp switch.
5, the correct maintenance
LED lamps in use should strengthen maintenance in order to prolong its life. Room lamp should always use a dry cloth, and pay attention to prevent moisture intrusion, so as not to appear a long time corrosion damage or leakage circuit phenomenon; If it installed in the toilet, the bathroom lights shall be fitted with damp shade, otherwise it will greatly shorten the life; If the lights should be installed in the kitchen, so you should special attention to anti-smoke, because the accumulation of grease will affect the brightness of light; light transmittance of the shade is good, but easy to stick dust, so you should wipe to be diligent, in order to avoid affecting the degree of light penetration; If the lamps is non-metallic, the wipe should be with a damp cloth to prevent dust accumulation, affecting lighting effects.
If wet easily lead lamps rust, paint, lighting will shorten the period of use. Therefore, moisture is the key to lighting maintenance, especially the bathroom, bathroom fixtures and kitchen stove lights, lampshades have installed moisture to prevent moisture ingress, corrosion damage or leakage to avoid short circuit.
Home LED lighting should not to use water to clean, just wipe with a dry cloth dipped in water, if you accidentally hit the water, then you need try to dry it, avoid using a wet cloth immediately to wipe.

LED stage light applications

LED stage lighting art as a form of visual art has been applied in a foreign country, but in China from 2007, it began to appear on the stage, and in 2008 Beijing Olympic Games opening and closing ceremonies get comprehensive application and presentation. The foreseeable future will give Television Arts and LED lights use TV studio provides a whole new way. Compared with the traditional stage lights, LED bright colors decorate the space more beautiful. LED in the modern environmental art design, stage art design and interior decoration, etc., it achieved the perfect combination of light and art. Microcomputer-controlled LED stage light products can be set up with the venue and program needs, make the most effective combination of rapid changes in the light, in order to achieve the most perfect ambience lighting effect. Meanwhile, the existing major events on the stage LED display combined images can be rendered more refined performance. This is a new experience in terms of the audience.
LED stage light applications
Energy saving is currently living resources and human core of the strategy of sustainable development issues. It is equally important in film and television performances field. According to data released by the NDRC, China’s existing studio, theater, tens of thousands of venues, using traditional lighting small power as several hundred watts, mostly a few kilowatts of electricity consumption can imagine, if All of these functional and energy-efficient LED lights can save 60 billion kwh annually alone, it can reduce carbon dioxide emissions 60 million tons, it will be on China’s important contribution to energy conservation.
LED Indoor Stage Lights advantages, the current use of LED stage lights venues initial installation cost is a lot more expensive than traditional lamps, but maintenance and usage costs will be much lower than traditional stage lights, a common thread spotlight life is only 750 hours, the power of 2000 watts, while the LED lamp life up to 50,000 hours, so in order to achieve the same effect, it only need an 200W LED light, according to 6 hours a day light, the annual operating cost is only common thread spotlight five about one-half. Over time, the savings can not be discounted. In addition, because LED is a cold light source, very little heat, but also reduces air conditioning costs, which in turn saves a small fortune.
As a new light source technology, the current large-scale alternative to traditional stage lighting LED Indoor Stage Lights is also necessary to solve some technical problems, such as if used improperly and in front of the camera glare, light angle is not adjustable and so on. But Mr. Andy think these issues do not hinder LED stage lighting, because these problems in the future will be in the design, manufacture, application and other aspects to be improved, the final art LED stage lighting effect will be more perfect, more quickly achieve widespread application .

Features of led high bay light

　　Features of led high bay light

led high bay light
1. Led high bay lights can be made in any shape or size in order to replace almost all existing applications;
2. Led high bay lights use high power LED light sources with a design life of over 50,000 hours.
3. Semi-Conductor Light Source, No UV Rays.
4. Aluminum alloy surface, firm structure, long lasting.
5. Extensive application, simple, safe and convenient.
6. Consumes less energy than traditional ones. So it is economical.
7. Led high bay light works perfect in low temperature.
8. Led high bay lights are unbreakable, and require zero maintenance and do not contain harmful or hazardous chemicals associated with other low energy lighting products
9. Led high bay light is processing to ensure the good thermal dissipation function. Effectively reduce the brightness decline.
Application of led high bay light: it can be hanged on the roof or mounted to the walls or on the Roof Factories, workshops, warehouse, toll stations, gas stations, stadiums, and more.