In Japan , there is a rising trend for the electricity of the commercial power station accounting for about 20% of the rail operators. To stop this trend , companies are beginning to use photovoltaic power generation system and LED lights at the station.

Of which , the “green station” project promoted by JR East Japan is a good example. The first demonstration station of the project is Tokyo Yotsuya Station ( Figure 1 ) . The station has become the first green station on the spring of 2012 , the photovoltaic systems are installed on the roof of the station and the adjacent commercial facilities, the roof can only provide 50kW power station .

JR East Japan is promoting the “green station ” project using the energy-saving technologies and renewable energy. The first demonstration station is Yotsuya Station where LED lights and solar power generation systems were introduced.

The LED lights are adopted as the lighting of the Yotsuya Station and hall. The electronic display showing station names and boards and monitor’s backlight used by the drivers also use LED. Also installed skylights , the lights can be turn off during the day , the household fuel cell is used in the station facilities.

photovoltaic power generation system and LED lights

Figure 1: The introduction of LED lights and photovoltaic power generation systems at the station

The aim is to reduce CO2 emissions at Yotsuya Station by approximately 40% over 2008 through these measures. According to JR East introduced , the environmental station will gradually be increased in the future . Following Yotsuya Station,the next stop will be the environmental JR Chiba Makuhari Station .

Energy savings by controlling the lighting

The traditional fluorescent and incandescent bulbs replaced with LED lights is to cut electricity consumption , controlling the LED lights according to the situation will be able to further reduce power consumption . For example, Tokyu Corporation Jiyugaoka station tried to import Panasonic LED lights and its control system .

Lighting control system employing detecting sensor is installed in each position of the station , which can automatically adjust the brightness of the LED light according to the number. For example, in the pedestrian came dim the lights .

The human sensor integrated brightness sensor installed on the platform is to ensure the station remains within a certain brightness. That is, the lights will dim in the sunny day , and brighten lights during the rainy day

Not only is the brightness , but also automatically adjust the color temperature. Hall LED will change the color temperature according to time . For example, in the morning rush hours , in order to make people awake, the color temperature tune into about 5000K ” daylight ” , the color temperature will be transferred to about 4000K in the evening, become ordinary ” white – warm white .” the color temperature is tune into 3000K ” bulb color .” to make people calm down at night.

In addition, 494pcs LED lights were installed the station Jiyugaoka platform, 238 pcs were installed in the lobby , 290 pcs were installed in the station rooms and toilets, 152 in the station stores . the 47 light sensor and 168 personal sense sensors were also installed.

Also uses organic EL lighting

In addition to LED lights,the Jiyugaoka station also uses organic EL lamp. Panasonic said, “This is the first attempt ” that organic EL lamp is used at the station.

The flux of the organic EL lighting module is 48lm, luminous efficiency is 17lm / W, life is about 10,000 hours , the light emitting surface is 80mm square. The lamps installed with this module in the wicket is 19 groups ( a total are 184 modules ) , installed at the ticket window is 10 groups ( a total are 92 modules ) .

Why the Freedom Hill station using organic EL lamp and LED lamp is to make a total reduction of the electricity and CO2 emissions by 25%.

By replacing with the LED light and an organic EL light, all lighting electricity consumption reductions ” will be changed according to the situation at the Jiyugaoka station , but the average reduction is about 30% , up to approximately 37% reduction ” ( Panasonic ) . Coupled with the introduction of lighting control systems,a total of about 50 % of the lighting power consumption can be reduced . Because lighting electricity consumption accounted for about 50% of the entire station , thus enabling the station overall electricity consumption reduction is about 25 % of the target .

For Panasonic , in addition to energy savings , there are a purpose, which is to identify the facing issues and find solutions in the promotion and popularization of the new technology . the problem of the organic EL light has been discovered . Compared with LED lights , the organic EL light in terms of cost , brightness and efficiency , there are still problems, ” it is equivalent to the level of technology of the LED lights from 2003 to 2004. Although it can be used as a local lighting , lighting does not work as a whole ” ( Matsushita ) . Therefore, Panasonic plans to import this trial as an opportunity to clear issues , and then to further improve product performance.

Nowadays,the LED flood lamps and LED tube light are the 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 lamps 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 lamps so that fully guaranteed stable and soft light of the LED tube light and octahedron breadth and brightness irradiation range of the LED floodlight, 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 lamps 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/led-lights-and-photovoltaic-power-generation-systems-are-introduced-at-the-japnese-station/

Oznake: led lights, LED flood lamps, JR East, LED tube light, Panasonic, lighting control systems, color temperature, power station, japan

We just generally y care about the optical parameters of the domestic LED lamps that is currently produced at the design stage, we are always considering choosing which chip and driver, how to cool and so on. However, there is no effective means of control in the production process, including large companies , too. How to control the full range of optical parameters in production process?

The incoming inspection firstly detect whether the parameters of each volume chip are the same as per roll labels of , in general, brand chip is unlikely mistaking the entire volume , so detecting one or two pcs is OK, the parameters mainly include the luminous flux , color temperature , power, current and voltage. The sampling ratio should be increased for the unknown branded

In the production process, it is essential that the kitting is checked and recorded . the color temperature, and even different partitions should be completely recorded in the record of the feeding. This process is often ignored because everyone thinks is a simple action . To prevent errors , in addition the detailed records need to be checked and then assemble on the SMT lines . Of course, there is also possibility that the color temperature is made mistake due to the negligence , it is best to use the bar code to control , designed frame special , different barcodes can not be put on , thus avoiding the possibility of manual errors .

The next the quality of patch also affect the normal use of the chip , such as Weld, the solder temperature is so high that burn the chips, the electrostatic breakdown the chips. So the paste deadline should be regularly checked , prohibit using the expired solder paste . Regular cleaning and inspection the tension of the steel is to ensure the thickness and integrity of the solder paste. Testing the thrust and the thickness of the solder paste can guarantee the quality of following weld after the solder paste is printed on the PCB,there is only a handful factory that is really do. It is best to use the PCB board with the temperature sensors to control the temperature curve , so that no accident would not have occurred that the high temperature burn chips. For electrostatic protection,the static ring should be started checking before the workers enter the door , all of the workers have to wear the wrist strap and dress in the static clothing . the whole floor should be painted the antistatic protective layer, all table and transfer device must be antistatic materials. The Corrugated boxes is not anti-static , which is a little known , many workers who are pursuit of the convenience directly use the corrugated board to separate PCB, which is very dangerous. the whole plant must be the purification plant isolated with temperature and humidity control .

After the SMD LED chips is attached,it should be lit to test , the general plant seek the efficient, just using the small current to light up to filter whether the LED is affixed. We all hope the problem of the fixture can be found after the aging test . In fact, this is a common problem of LED lighting plant , preferably test the associated optical parameters after the LED board is affixed, in order to avoid post- production rework. Currently on -line detection is still relatively weak , few can do online testing. Many people think that it is not necessary, as long as the LED chip is selected that all parameters can be granted, which is obviously quite different with the reality. If you can not do online , at least a few in every batch shall be selected to test with the integral ball .

To the lamp assembly, what shall be done for incoming inspection should be the same as that of the LED board,select the sampling to send to the integrating sphere to measure all the parameters. In the assembly process, the IPQC should drawn once every two hours,the final testing before storage is essential.

Some detection may be detected when aging. Currently we are observing and inspecting the brightness and color temperature , but which is affected by the human factors .It is best to measure the parameter while aging, which requires a device to guarantee. I believe that such devices will be available in the near future as LED products more and more mature!

Nowadays,the LED flood lamp and LED tube light are the 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 lamp 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 floodlight so that fully guaranteed stable 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 lamp 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/how-to-control-the-optical-parameters-of-the-led-light/

Oznake: SMD LED, LED flood lamp, LED tube light, PCB, solder paste, light source, color temperature, anti-static, assembly process

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.

However, this does not mean that we do not use the LED lighting , with the deteriorating global environment, what is imperative is that save energy to protect our globe , we surely inseparable from the light at night, instead of using the fluorescent lamps polluting environment and harming to our health, might as well replace with the more environmentally friendly LED lighting, LED lighting as the third generation of lighting is based on the semiconductor light emitting diodes, the conversion rate of the luminous efficiency and environmentally friendly effects has significantly been improved.

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-hazards-and-prevention-methods-of-the-blue-led-light-to-the-human/

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