Airport is a huge energy unit, constructing the Green Airport is the inevitable choice of the era. In many energy-saving means and measures , applying green and efficient lighting has been a major breakthrough that energy saving and maximize effect are carried out in the airport.

Oznake: Chengdu Shuangliu International Airport, LED lamps, LED light, Green Airport, LED tube light, central air conditioning, LED flood light, Downlight, lighting efficiency

Blue LED lights really is so much harm to our eyes ? Is the Called ” blue spill ” really “potential killers “that hurt our eyes? Many people have had a doubt and anxiety after hearing the problem that the blue LED lamps injury our health , the experts say that LED lights used in outdoor and large spaces is no problem, but the family should be used with caution , especially the three groups of people need to be extra careful.

Although on the issue that the blue LED injury our health , the industry and experts ‘ opinions are not entirely consistent. But one thing has not disputed that the LED light belongs to the rich blue. ,Mou Tongsheng who are the member of the International standardization of optical radiation safety committee, professor of the ZhejiangUniversity reminded, there are three types of people who should be used with caution , first class , apparently, is the delicate eyes of children . The second category , diabetes ,since developed for ten years ,there are lesions of the retina , the approximately of retinal withstanding the light damage is declined significantly. The third category is the patients taking photosensitive drugs, there are many light-sensitive drugs in our lives, such as doxycycline , ciprofloxacin, oral hypoglycemic agents D-860 etc, having taken the pills,the light damage may be more obvious , not only to be careful with the light , the sun should be extra careful .

The blue light does not mean blue light , but the high energy visible light that is of the wavelength of 400-500 nm . It can penetrate the lens to reach the retina , causing optical damage and accelerate the oxidation of macular cells . Thus , the blue light is the most hazardous visible the study confirmed.

How to reduce the harm caused by LED lamps ?

LED light is known as energy saving , but which must avoid a very high color temperature. ( Indoors, color temperature to come down. )

What is the color temperature ? The so-called color temperature is the scale measuring the light source and color , the low color temperature is the warm light we usually say , the red component is more, less blue component . Conversely, the color temperature of the cool bluish light is relatively high . Among Our common light sources , the candlelight is of about 2000K color temperature, incandescent lamp is 3000K, the morning sun is about 4400K, noon rose to 5600K. YuAnQi who are the president of the Senior Engineer , Shanghai Illuminating Engineering Society said that , what is the best is that conform to the laws of nature when we use the light in different times of a day, and the color temperature of the LED lights is currently generally high on the market , which can cause interference on the human body clock more or less :

when most of the Family use the lights is at night , which require the low color temperature light , use the white lighting products beyond the color temperature for long time will affect sleep, affecting the disorders of the biological clock , thereby reducing the human immune system .

The color temperature of most of lamps isn’t marked on the packaging on the market . There are two just marked on the manual . Experts call the State should provide that how much the color temperature of the lighting products should be clearly marked on the packaging.

Consumers should also avoid a misunderstanding, that is , the brighter the light, the better . LED lamps is best to be accompanied by the shade, on the one hand , the light can be softer,on the other hand , testing proved that this can reduce 1-2 orders of magnitude of the blue light spill . Many manufacturers in order to improve the light efficiency , the most obvious is the LED tube, many of which were a bare one , this is uncomfortable for people . there is a hood under the table lamp , which make that the dazzle light becomes not.

Oznake: blue LED, LED lamps, LED tube light, Illuminating Engineering Society, high energy, visible light, color temperature, lighting, LED flood light, light source, Shanghai

Recently the U.S. market has discussed about the LED Lights, LED lighting systems around a few key points of the new purchasing,of which there are two keys, some lamps currently finally can already reach 85% of energy-saving benefits of the system, followed by some of the LED’s durable life that has been improved than before, reducing the chances of the United States pathway RMA, which makes the passage vendor acceptance more high.

The following five points are new optional points:

1, understand the efficiency of products the fixture manufacturers claim, the costs of before and after the installation of lighting and energy and maintained costs, as well as after-sales service.

2, assess the quality of the LED, compare the output efficiency of the light, and the products complying with the U.S. Green Hotels indicators tested, which is a very strict assessment tests, each energy-saving feature that needs to be noticed have been taken into consideration.

3, evaluate LED lamps, also consider using the evaluation criteria and information of comparison of the Energy Star, as well as the manufacturer’s test reports.

4, confirm and carefully observe the light, energy efficiency values the manufacturer offer , because there may be fraud.

5, verify the installation requirements of the LED lighting or lighting system, make sure the new lamp you purchase is in line with the U.S. National Electrical Code standards, the lamps that meet the needs of lighting installation are OK.

Nowadays,the LED flood light and LED tube light is most widely used as the representatives of the decorative lighting and the home lighting in daily life,the LED tube light enjoys a great popularity in our corridor, restaurants, shopping, leisure and entertainment, galleries, exhibition halls and other indoor environments everywhere, the LED flood light is mainly used in city squares, parks, stadiums, the facades of large commercial buildings and hotel, stage, waiting rooms, airports etc. where the higher brightness is needed to illuminate,meanwhile,there a large number of factory engaging in developing and producing the LED light,Lead Lighting is just one of them,which adopts high brightness SMD as the light source of the LED tube and highly integrated and high brightness COB as the light source of the LED flood light so that fully guaranteed stabe and soft light of the LED tube light and octahedron breadth and brightness irradiation range of the LED flood light, while low voltage constant current driver ensure the AC can be converted into the DC to improve energy efficiency of the LED tube light and LED flood light and reduce the waste heat energy and stroboscopic effect exciting the human eye, the most important is that the LED lighting without adding mercury and other heavy metals harmful to our body and pollution the environment, that’s why the LED light is Known as energy-saving and environmental protection ,login http://www.ledclan.com to learn more features and uses of the LED tube light and surf www.lead-lighting.com to know more awesome LED floodlights and other LED lighting.

Article from http://www.lighting-ledlight.com/index.php/whats-the-five-point-discussion-about-led-lamps-and-led-lighting-on-u-s-market/

Oznake: LED lamps, LED tube light, United States, National Electrical Code, light source, Energy Star, energy-saving, lighting

LED lighting requirements for low-voltage driver chip

1.The input voltage range of the nominal DC of the driver chip should satisfy 8 ~ 40V, which is to cover a wider application needs. Pressure capacity is preferably greater than 45V. When the input is AC 12V or 24V, the output voltage of the simple bridge rectifier will fluctuate with the grid voltage, especially when the voltage is high, the output DC voltage will be high. If there is not wide input voltage range for the driver IC, which tends to be

breakdown when the grid voltage rises, thereby burning the LED light source.

2.the nominal output current of the driver chips required is greater than 1.2 ~ 1.5A. For the LED light source used for lighting, the nominal operating current of 1W LED light source is 350mA, 3W LED light source nominal operating current is 700mA. Power LED light source needs more current, the LED lighting driver IC selected must have enough current output, the driving IC must also be operated at the optimum working area that is 70 to 90% of the full load output when the product is designed. There is poor heat dissipation when the driver IC is used in the small spaces at the full-load output current, which easily lead to fatigue and early failure.

3.the output current of the driver chip must be kept constant, so to stabilize the LED light, no flash. When the Same batch driver chip is used under the same conditions, the output current should be as consistent as possible, which is discrete to be small, so that ensure the effectiveness and orderliness on the high-volume automated production line. For the drive chip whose output current has certain discrete, required the sub-file selection before the factory or production line, adjust the size of the resistor set by the current on the PCB, so that LED constant current driver of LED lamps board produced is consistent with the emission luminance of the similar light source in order to maintain the consistency of the final product.

4. the package of the driver chip should facilitate rapid cooling of the die of the driver chip, such as the die is directly bind on the copper, and there is a direct extension of the pin outside of the package, in order to that the copper foil directly soldered on the PCB rapidly transfer the heat. If the chip that is similar to the 4X4mm through 300 ~ 1,000 mA current for long time, the power consumption and heat is inevitably generated, therefore, the physical and thermal structure of the chip itself is also very important.

5. driver chip anti-EMI, noise and high pressure capability is also related to that whether the entire LED lighting products can pass CE, UL certification, so the advanced topology structure and high-pressure production process should be used when the driver chip is designed.

6.driver chip’s own power requirements is less than 0.5W, the switching frequency is greater than 120Hz, in order to avoid visible flicker produced by the frequency interference.

In short, LED driver chip urge the green lighting to the development of innovative design. LED lighting without driver chip, requiring multi-functional LED light source driver IC. If the power supply that is less than 36V AC is used for the LED lamps, the non-isolated power supply can be considered; if the choice is 220V and 100V AC power, you should consider the isolating power supply. For the AC 100 ~ 220V drive chip directly used, because the application excessively depends on the volume demanding, there is higher demand, the greater difficulty on the technically, the countries are currently making efforts to develop. The Massive demand for LED lighting market gives the chances of success to all the IC design company again, if rapid transformation and pushing the product as early as possible, then there is a lot chances to win.

Nowadays,the LED flood light and LED tube light is most widely used as the representatives of the decorative lighting and the home lighting in daily life,the LED tube light enjoys a great popularity in our corridor, restaurants, shopping, leisure and entertainment, galleries, exhibition halls and other indoor environments everywhere, the LED flood light is mainly used in city squares, parks, stadiums, the facades of large commercial buildings and hotel, stage, waiting rooms, airports etc. where the higher brightness is needed to illuminate,meanwhile,there a large number of factory engaging in developing and producing the LED light,Lead Lighting is just one of them,which adopts high brightness SMD as the light source of the LED tube and highly integrated and high brightness COB as the light source of the LED flood light so that fully guaranteed stabe and soft light of the LED tube light and octahedron breadth and brightness irradiation range of the LED flood light, while low voltage constant current driver ensure the AC can be converted into the DC to improve energy efficiency of the LED tube light and LED flood light and reduce the waste heat energy and stroboscopic effect exciting the human eye, the most important is that the LED lighting without adding mercury and other heavy metals harmful to our body and pollution the environment, that’s why the LED light is Known as energy-saving and environmental protection ,login http://www.ledclan.com to learn more features and uses of the LED tube light and surf www.lead-lighting.com to know more awesome LED floodlights and other LED lighting.

Resource from http://www.lighting-ledlight.com/index.php/whats-the-led-lighting-requirements-for-the-low-voltage-driver-chip/

Oznake: LED lamps, LED flood light, dc, voltage, IC, design, AC power, constant current, ma, light source

The correct choice of LED driver IC is essential to reflect the characteristics of energy saving and long life of the LED lights In the field of LED lighting. The advantage of LED lighting can not be reflected without a good driver IC matched,.

LED lighting has been a leap in the recent developments, LED as the green and cleaning light is widely recognized. LED light source is known as long life, energy saving, easy application, low cost, and thus it will receive a flood of applications in home lighting, OSRAM optical semiconductor company surveyed that the global annual shipments of the home lighting lamp was about 50 billion in 2008,.

LED light source technology matures, the lumens per watt LED grow rapidly, prompting its diminishing prices. Taking the 1WLED light, for example, the price in the spring of 2008 is one-third of the price of the spring of 2006, the spring of 2009 has be reduced to one quarter of 2006.

The mass market and a steady growth in demand of the LED green lighting for several years will be super tsunami of the IC industry following VCD, DVD, mobile phones, MP3 on the consumer electronics market!

The superiority of high energy saving, long life and good for environmental protection of the LED lamps is being universally recognized.

1.LED High energy: DC drive, ultra-low power consumption (single tube is 0.03 ~ 1W) the electro-optical power conversion is close to 30%, the same lighting effects is 10% more than that of the traditional energy sources.

2.LED Long life: LED light source is called as longevity lamps. It is the solid cold light source, epoxy resin, there is nearly no loose parts in the light body, and there is no filament that is easy to burn, heat deposition, the fast light fades and other shortcomings, the service life is up to 50,000 hours, the life is 5 times longer than that of the conventional light sources.

3.LED is good for environmental protection: LED is a green light, the environmental benefits is better. The spectra contains no ultraviolet and infrared, low in calories and no flicker, no radiation, and recyclable waste, no pollution, no mercury elements, cold light source, safe touch, typical of the green lighting.

The work characteristics of the LED light

The VF used for lighting of the LED lighting source is of low voltages, which is normally 2.75 ~ 3.8V, IF is generally 15 ~ 1,400 mA. Therefore, the output voltage of the LED driver IC is VFxN or VFx1, IF keep the constant that is at 15 ~ 1,400 mA. There are two kinds of power that are the small power (IF is 15 ~ 20mA) and high power (IF is greater than 200mA) used for the LED light source. The Small power LED is mostly used to produce LED tube light, decorative lights, grille light. The big Power LED is used for household lighting, LED flood light, underwater lights, wall lights, street lamps, tunnel lights, car lights. Power of the LED light source is the device that is suitable for the low voltage, high current drive, the luminous intensity is determined by the current flowing through the LED. the LED light attenuation is caused by the General Assembly Current, the too small current will affect LED luminous intensity. Therefore, LED driver needs to provide constant current power to ensure the safety of high power LED, and to achieve the desired luminous intensity. In the field of LED lighting, the correct choice of LED driver IC is essential to reflect the characteristics of energy saving and long life of LED lights,. Not a good driver IC matched, LED lighting advantage can not be reflected.

Nowadays,the LED flood light and LED tube light is most widely used as the representatives of the decorative lighting and the home lighting in daily life,the LED tube light enjoys a great popularity in our corridor, restaurants, shopping, leisure and entertainment, galleries, exhibition halls and other indoor environments everywhere, the LED flood light is mainly used in city squares, parks, stadiums, the facades of large commercial buildings and hotel, stage, waiting rooms, airports etc. where the higher brightness is needed to illuminate,meanwhile,there a large number of factory engaging in developing and producing the LED light,Lead Lighting is just one of them,which adopts high brightness SMD as the light source of the LED tube and highly integrated and high brightness COB as the light source of the LED flood light so that fully guaranteed stabe and soft light of the LED tube light and octahedron breadth and brightness irradiation range of the LED flood light, while low voltage constant current driver ensure the AC can be converted into the DC to improve energy efficiency of the LED tube light and LED flood light and reduce the waste heat energy and stroboscopic effect exciting the human eye, the most important is that the LED lighting without adding mercury and other heavy metals harmful to our body and pollution the environment, that’s why the LED light is Known as energy-saving and environmental protection ,login http://www.ledclan.com to learn more features and uses of the LED tube light and surf www.lead-lighting.com to know more awesome LED floodlights and other LED lighting.

Rťsource from http://www.lighting-ledlight.com/index.php/whats-the-main-features-and-working-characteristics-of-the-led-light/

Oznake: LED lamps, led lights, IC, Small power, tube light, ma, luminous intensity, energy-saving, LED flood light, optical power

As people’s living standards improve,more and more families choose energy saving LED lamps, LED crystal lamps, LED flood light, LED energy-saving lamps and other LED lighting fixtures, but with the increased use of time we will inevitably encounter that the LED light is damaged, so today I share with you how to repair the damaged LED lamps, this experience is suitable for all LED lamps.

Tools / materials

Multimeter

Methods / steps

1.First, we must ensure that there is no problem with the circuit of the LED lamp in our own families, the main problem is that the switch has gone wrong , the switch is the focus of our detection.

2.Check the the power converter on the back of LED lights (that white box that is in the figure is the power converter), for this,the converter would be directly removed, and powered with a multimeter to measure the voltage or current, if the power converter is damaged,which can be directly purchased for the replacement, it is generally very cheap.

3.If there is no problem with the LED power converter,then we can cut the multimeter to the voltage output gear, and then place in the corresponding positive and negative point of the LED lamp to look up it will be lit or not. Replace it If it is can’t be lightened up.

4.Generally speaking, after the above three steps,60% of the LED lights problem can be solved, so our LED lights should be able to re-radiate the glory.

Precautions

Because LED lights are high-tech products and require a 220V power,we must pay attention to protection against electric shock during maintenance, and if you have doubts on the maintenance ,please check the reference material the qualify manufacturer and supplies offer.

Nowadays,the LED flood light and LED tube light is most widely used as the representatives of the decorative lighting and the home lighting in daily life,the LED tube light enjoys a great popularity in our corridor, restaurants, shopping, leisure and entertainment, galleries, exhibition halls and other indoor environments everywhere, the LED flood light is mainly used in city squares, parks, stadiums, the facades of large commercial buildings and hotel, stage, waiting rooms, airports etc. where the higher brightness is needed to illuminate,meanwhile,there a large number of factory engaging in developing and producing the LED light,Lead Lighting is just one of them,which adopts high brightness SMD as the light source of the LED tube and highly integrated and high brightness COB as the light source of the LED flood light so that fully guaranteed stabe and soft light of the LED tube light and octahedron breadth and brightness irradiation range of the LED flood light, while low voltage constant current driver ensure the AC can be converted into the DC to improve energy efficiency of the LED tube light and LED flood light and reduce the waste heat energy and stroboscopic effect exciting the human eye, the most important is that the LED lighting without adding mercury and other heavy metals harmful to our body and pollution the environment, that’s why the LED light is Known as energy-saving and environmental protection ,login http://www.ledclan.com to learn more features and uses of the LED tube light and surf www.lead-lighting.com to know more awesome LED floodlights and other LED lighting.

Article from http://www.lighting-ledlight.com/index.php/how-to-repair-the-led-light/

Oznake: LED lamps, LED tube light, LED flood light, Multimeter, power converter, light source, energy-saving, AC, dc