” Less curve, driving fast, comfortable!” driving on Chongqing-Chengdu Expressway, many drivers issue such a sigh on 25th December 2013.
Why is it so?
The answer is: the low-carbon, intelligent, environmentally friendly LED tunnel lights are bringing the driver better driving comfort.
Entering each tunnel at Yurong speed Chongqing section, you will find that crowded LED tunnel lights are installed above each tunnel.
“LED tunnel lights installed inside the tunnel sparse in the middle and crowd on both sides ” who responsible for the Chongqing Expressway said, the human eye can gradually adapt to changes in light emitted by the LED tunnel lights .
According to reports, the LED tunnel lights are used at Chongqing section of Chongqing-Chengdu Expressway. A total of 900 LED tunnel lights have been installed in the four tunnels at the full range of Chongqing section on Chongqing-Chengdu Expressway, which can save 6,416,000 degrees electricity a year.Browsing http://www.lead-lighting.com/products/bid32-1.htm for more information about the LED tunnel lights.
Article from http://www.lighting-ledlight.com/index.php/led-tunnel-lights-bring-low-carbon-environmentally-friendly-driving-comfort/
According to Japan’s Kyodo News reported on December 23, Otaru, Hokkaido, Japan Tourism Association put 5000 blue-emitting LED lights floating in in Otaru Canal which is the city’s famous tourist attraction in the evening of 22nd December 2013. Against the background of the snow，the blue LED lights floating in the river like a bright star in the night sky, attracting many tourists.
At 17:00 on the 22nd, dressed in Christmas costumes in the white snow， the employees threw the 5000 LED lights float into the river, the diameter of cylindrical floating LED lights is 8.5 cm, made of plastic material, it will be automatically lit by the water. OtaruCanal has organized this event for the second time since 2012.
It is obvious that LED lighting as the third generation of the semiconductor light-emitting diodes lighting, the energy saving features are not only excellent, but also because semiconductor technology can better perfect combination of design , agriculture, medicine, industry, aerospace and other fields in forms of the intelligent lighting bring us a pretty new and unique experience.
Definitely, LED lighting is closer and closer to our daily life。Meanwhile，the sensor LED flood light is the most widely used as the representatives of the decorative lighting and the outdoor lighting in daily life，the sensor 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 brighter light needs to illuminate,moreover，there are a large number of factory engaging in developing and producing the sensor LED flood light，Lead Lighting is just one of them，which adopts highly integrated and high brightness COB as the light source of the sensor LED flood light so that fully guarantee the octahedron breadth and brightness irradiation range of the sensor LED floodlight, while low voltage constant current driver ensure the AC can be converted into the DC to improve energy efficiency of the sensor 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. Browsing http://www.lead-lighting.com/led-flood-light/high-power-waterproof-pir-led-flood-light-series.htm for more information about the sensor LED flood light.
Article from http://www.lighting-ledlight.com/index.php/5000-led-light-made-japan-otaru-canal-becoming-blue-sky/
LED lights has been used to light up a 18-meter-high Gundam to celebrate the festival in Tokyo Odaiba shopping mall recently in Japan. Being upgraded，the entire lighting system wasthe modified to be irradiated from the foot to up， making the model in a sci-fi atmosphere with color LED lights. Prior to January 13 next year, models will be lit from 17:00 to 23:00.
Odaiba is a large shopping mall in Tokyo entertainment and shopping venues, including theme parks and the theme museum experience. During the festival, the theme park will also sell two limited edition Christmas commemorative products. In addition, since January 16 next year, the theme park will hold “Gundam Exhibition”, which will show all the Gundam series and its structure and accessories, including the “head”, “helmet”, “shield “and” backpack “and other structures show.
There is no doubt that the third generation of high-tech energy-saving LED lighting is indeed significantly different from the traditional lighting , it do not only simply provide lighting, but also closely related to design，smart phones and other electronic industry and agriculture, medicine, clothing design, aerospace to give us pretty perfect and extrordinary experience.
Nowadays，the outdoor LED flood light is widely used as the representatives of the decorative lighting and the outdoor lighting in daily life，the outdoor 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 brighter light needs to illuminate,moreover，there a large number of factory engaging in developing and producing the outdoor LED flood light，Lead Lighting is just one of them，which adopts highly integrated and high brightness COB as the light source of the outdoor LED flood light so that fully guarantee the octahedron breadth and brightness irradiation range of the outdoor LED flood light, while low voltage constant current driver ensure the AC can be converted into the DC to improve energy efficiency of the outdoor 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. Browsing http://www.lead-lighting.com/products/sid53-1.htm for more information about the outdoor LED flood light.
Article from http://www.lighting-ledlight.com/index.php/led-lights-lit-18-meters-robot/
Historically , Cree has been operating LED lighting products such as power LED light including the high power LED flood light in volatile market environment , the situation is obvious in the past few years. 2012 is the year of the LED market overcapacity , falling prices of power LED lights especially the high power LED flood light and profit pressures downward important both trends torturing LED industry. However, as an innovator in LED industry , Cree financial year (ending on June ) achieved 18% revenue growth in 2012, but due to increase funding for research and development of new products and improve product price competitiveness, as well as the industry ‘s high power LED flood light and other commercial and industrial or household LED lighting product turn to falling profits, the company also recorded a 70% decline in net income .
Mainly affected by the reduction in the delivery of innovative products and the price gap between high power LED flood light and other LED lighting and traditional lamps , LED dynamics market have been greatly improved over the past year . Demand growth in all areas of industry support – LED, lighting and power and RF , Cree made $ 14 billion in revenue (19 % annual growth ) in fiscal year 2013 . In addition to strong sales performance, the operational efficiency of commercial high power LED flood light and other commercial and industrial or household LED lighting products also makes the gross profit margin increased by 2.6% in fiscal year 2013. Company is holding more than one billion U.S. dollars in cash and no debt at the end of the this fiscal year. This powerful statement of financial position provides Cree with investment and development business and the ability to respond to new opportunities in high power LED flood light and other LED lighting industry. All in all, the strong growth of lighting products especially high power LED flood light and other commercial and industrial or household LED lighting in the revenue structure offset the performance of its instability over the past few quarters .Browsing http://www.lead-lighting.com/products/sid125-1.htm for more information about the high power LED flood light.
Article from http://www.lighting-ledlight.com/index.php/forbes-cree-will-maintain-growth-on-lighting-especially-led-lighting-products-in-2014/
With a wide range of high-power white LED applications including the COB LED flood light， the cooling problems of LED chip of high-power white LED lights such as COB LED flood light is urgently to solve in the actual life, high heat of LED chip is generated in a very small volume，but the heat capacity of the LED itself of COB LED flood light and other power LED lighting is small, these heat must be conducted as soon as possible otherwise it will have a very high junction temperature. We have been a lot of improvements on the chip of COB LED flood light and other power public LED lighting to leads the heat outside of the chip, the main improvement is the use of better thermal conductivity substrate material on the LED chip structure to improve the heat dissipation of the LED chip of power LED lights particularly the COB LED flood light and other power commercial and industrial LED lighting . because Cree ‘s LED thermal resistance use silicon carbide as the substrate , the thermal resistance is at least twice as low as that of other companies .
Even if thermal resistance can be solved from the chip to the package material, but the cooling effect is not good from the package to the PCB board, which cause that the temperature of LED chip of COB LED flood light and other power LED light rises, the phenomenon appears luminous efficiency decreases . So, just as the Panasonic want to solve this problem , the circular , linear, surface -type white LED, and PCB board have been designed into one since 2005 to overcome the heat problem because of the interruption emergence from the package to the PCB board .
Thus , in the face of constantly improving the current situation , while how to increase the heat capacity of the chip of COB LED flood light and other power LED lights is urgent to be overcome at this stage, in addition to the material itself, but also including the wafer and the heat resistance of the packaging material , heat resistance thermal structure, thermal structure between the packaging materials and the PCB board and the thermal structure of PCB , all of which of COB LED flood light and other power LED lights needs to be holistic considerations.Browsing http://www.lead-lighting.com/products/bid19-1.htm for more information about the COB LED flood light.
Article from http://www.lighting-ledlight.com/index.php/how-to-solve-the-cooling-problems-of-led-chip-of-high-power-white-led-lights-such-as-cob-led-flood-light/
In recent years，industry experts have been making efforts to improve the performance of heat dissipation of chip of high-power LED light such as COB LED flood light，they have raised the following points to improve the program :
1.By increasing the LED chip area is to increase the amount of light emitted .
2.Using several small LED chip to package .
3.Changing LED packaging materials and fluorescent materials.
Can these three methods completely improve the heat dissipation problem of high-power white LED products including the COB LED flood light? Actually striking ! First we though increases the area of LED chip in order to obtain more luminous flux (a few of light beams through per unit area within per unit time is the flux， the unit is ml) and achieve white effect we want, but because the actual area of chip of COB LED flood light and other power LED lights is too large , resulting in the opposite phenomenon occurs in some application process with structure. Can not the thermal problems of white power LED lighting products particularly the COB LED flood light solve? Certainly not，for the emergence of simply increasing the chip area, LED professional practitioners use several small LED chips and other ways to improve the surface of high-power LED wafer according to the electrode structure improvement and flip chip packaging structure thereby achieving 60lm / W high flux luminous but lower heat efficiency.
In fact, there is another way to effectively improve the heat dissipation problem of high-power chips of COB LED flood light and other power LED lights. That is, the previous plexiglass or plastic which is the packaging materials of COB LED flood light and other commercial or industrial power LED lights is replaced by silicone. Replacing the packaging material is not only able to solve cooling problems of LED chip but can improve white life of LED of COB LED flood light and other LED lamps, really double-edged sword. The silicone should be used as almost the packaging material of all of the high-power LED white light such as COB LED flood light products . Why must silicone be used as a packaging material of high-power LED light? Because the rate of silica gel absorption of the wavelength light is less than 1% . But the rate of epoxy absorption of 400-459nm light is up to 45% , it is easy to produce serious decline due to aging by the COB LED flood light and other LED lighting absorbing short-wavelength light.Taking a good look at http://www.lead-lighting.com/products/bid19-1.htm for more information about the COB LED flood light.
Article from http://www.lighting-ledlight.com/index.php/how-to-improve-the-heat-dissipation-problem-of-high-power-white-led-products-including-the-cob-led-flood-light/
How to effectively dissipate the heat is increasingly paid attention to by the those developing and researching LED lighting products particularly power LED lights including outdoor LED flood light and other commercial and industrial LED lights , because the light failure or life of outdoor LED flood light and other LED lights is directly related to the junction temperature ,poor heat dissipation is that the junction temperature of LED is high , so the life is short .
Today power LED lighting products such as outdoor LED flood light are increasingly used in various fields and put into use , we are worried about practical issues while amazing the pleasure power outdoor LED flood light and other power LED lights bring !
First of all, as far as the characters of high-power white LED light especially outdoor LED flood light are concerned， the high-power outdoor LED flood light and other commercial and industrial LED lights LED still exists that the luminous uniformity is poor , the life is not long because of enclosed materials particularly cooling problem of the chip of outdoor LED flood light and other commercial and industrial LED lights is difficult to get a good solution , but can not play the advantages of outdoor LED flood light and other white LED applications which are expected.
Secondly, considering the price of outdoor LED flood light and other high-power white LED lighting，because of the high power, high brightness, the cost of manufacturing materials such as LED chip and heat sink and power supply is much dearer than that of the average household indoor low-power LED lights. Today’s high-power LED lights including the outdoor LED flood light is mainly used for public lighting or commercial and industrial purpose，because the price is still too high and the technically still needs to be improved , which significantly limits the high-power outdoor LED flood light and other power LED lighting product.Browsing http://www.lead-lighting.com/products/sid53-1.htm for the better understanding of outdoor LED flood light.
Article from http://www.lighting-ledlight.com/index.php/what-are-the-factors-limiting-the-application-of-power-led-lighting-including-outdoor-led-flood-light/