Author Archives: woodjams316

How do the junction temperature of LED light generate

Why the LED light especially the high power LED lights including the high power LED flood light generating the heat is because that all of the electricity inputted is not turn into light energy , but considerably majority of which is transformed into heat. LED light efficiency is currently only 100lm / W, the electro-optical conversion efficiency is only about 20 to 30%. That is about 70% of the electrical energy wasted into heat .

high power LED flood light

Specifically , the junction temperature of especially the high power LED flood light and other power LED light is generated due to two factors .

1 . Internal quantum efficiency is not high , that is, when the electron recombines the hole, which can not produce 100% of all photons, commonly referred to as the ” current leakage ” of carriers leaving the PN zone composite rate. Leakage current times the voltage is the power of this part, which is converted into heat , but this part does not account for the main component , because the internal photon efficiency is close to 90%.

2 . photons Internally generated can not be fully emitted to the outside of the chip and finally converted to the heat, which is the main part , referred to that the external quantum efficiency is currently only about 30% , most of which is converted into the heat .

Although the light efficiency of incandescent is very low , only 15lm / W or so, the considerably majority of the electrical energy light energy is converted into heat , which is that same as the high power LED flood light and other LED lights or other lamps,the rest electricity is converted into light radiated since most of the radiation is infrared therefore very low efficiency, but eliminating the problem of heat dissipation .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/how-do-the-junction-temperature-of-led-light-generate/

“Singing” of LED Christmas lights stretching and rolling freely

Perhaps one day our lives will become that all the material life are connected to the network at any time to respond to signals through the wireless network . A novel LED Christmas lights can now allow us to connect to the Internet of Things for the first time.

LED Christmas lights

Australia Moore Cloud introduced the LED Christmas lights connected with Internet of Things. Costing $ 200 can get a bunch of controllable LED lights, so that we can set the Christmas tree to play our favorite music. The control interface of the Christmas lights is similar to that of Philips Hue smart LED bulbs and other mart lighting .

Currently , Moore Cloud company has almost sold out of this product . Although networking is still a novelty , the designers and manufacturers have standardized design in its interface.

Roll Light which is LED lamps whose volume can be extended freely

Smart phones can be softly bent, so do the light. Roll Light is such a lamp to be bent , which is made of flexible silicone and LED.

Roll Light is designed with its soft, gentle and curved forms to affect our emotions , which subverts the conventional typical precision straight edge light fixtures. It uses a variety of methods – rolled is like a baton , it can even stand up when being expanded and hanged on the tree . Roll Light is easy to carry and use , it can also recharges. In addition, the users can also choose to self- luminous type.

Roll Light consists of two parts, namely, the light-emitting area and hand area. Area which can be glowing is made of translucent silicone and LED​​. Silicone is known as waterproof and insulation characteristics, we need not worry about that this fixture will be broken any more when dropping on the ground , because it is very flexible and very strong, even if for the child,it is also very safe to use . Roll Light is provided with a handheld button switch and a charging socket . After a full charge , it can be used for about five hours. The specification of Roll Light is 370mm × 280mm × 20mm, its edge is just 15 mm thick in order to highlight the switch button . Being wounded up , the diameter of Roll Light is about 80 mm ( depending on the size and intensity of the hand of the user ) .

The Roll Light expanded is easy to carry, rolled it into a flashlight , this lamps stretching and rolling freely will be able to provide users with many unique pleasure. This design won the 2013 red dot design concept award , I do not know when it will usher in mass production .

Beyond doubt, 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 the pretty new and unique experience.

Definitely, LED lighting is closer and closer to our daily life,such as the RGB LED flood light is  widely used as the representatives of the decorative lighting and the outdoor lighting in daily life,the  RGB LED flood light is enjoying a great popularity in city squares, parks, stadiums, the facades of large commercial buildings and hotel, stage, waiting rooms, airports etc. where the brighter and colorful light needs to illuminate,moreover,there are a large number of factory engaging in developing and producing the  RGB LED flood light,Lead Lighting is just one of them,which adopts highly integrated and high brightness COB as the light source of the RGB LED flood light so that fully guarantee the  octahedron breadth and bright irradiation range of the RGB LED flood light, while low voltage constant current driver ensure the AC can be converted into the DC to improve energy efficiency of the RGB  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.lead-lighting.com/led-flood-light/led-flood-light-rgb-series.htm to know more awesome and practical  RGB LED flood light.

Article from http://www.lighting-ledlight.com/index.php/singing-of-led-christmas-lights-stretching-and-rolling-freely/

Why so slow the development of China’s LED lighting

1 , the low-end market impact :

Currently the economic constraints the development of public LED lighting including thehigh power LED flood light and other commercial or industrial LED lights in a lot of Chinese countries, the towns and rural areas accounting for 70 to 80% of the area of China are particularly prominent. So cheap, poor performance of incandescent and fluorescent lamps still flood the market,resulting in that the lighting manufacturers have to compete for the low-end market , the price war is inevitable . They are not developing new lighting products but to find ways to save the cost of materials of the LED lighting especially the high power LED lights such as high power LED flood light and general lighting ,for instance ,the chip of high power LED flood light and other LED lights is not original, the heat sink is most common, etc.,. moreover the vendors have not enough capacity to develop and research the high power LED flood light and other commercial and industrial LED lights but is pretty comfortable for the low-end market.

high power LED flood light

2, the management level of manufacturer is not high :

Most of Chinese lighting manufacturers are small businesses , of which there are many private enterprises. Although a few passed the ISO9000 international certification , etc., but majority of the enterprise specializing in high power LED flood light and other commercial and industrial or household LED lighting is still manual workshop adopting family -style management , which is lack of construction of a modern enterprise system.

3, the impact of foreign advanced LED lighting products :

With the influx of foreign advanced LED products , new technologies, new ideas are bringing to the Chinese people but also the impact of the domestic market. The current high-end high power LED flood light and other commercial and industrial LED lighting products are dominated by the US and Japan, a lot of commercial buildings and stadiums, squares built by provincial cities generally use the high power LED flood light and other quality imported LED lamps over the past two years, as long as economic conditions permit. Some domestic manufacturers is unable to compete with foreign brands , only to abandon the development of high-end high power LED flood light and other commercial and industrial LED lighting products , bringing some negative impact on domestic developments of LED lamps or other lamps.Surfing 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/why-so-slow-the-development-of-chinas-led-lighting/

What are the three factors limiting the development of Chinese LED lighting

With the impact of escalating competition in the market and foreign products , China ‘s LED lighting industry especially the commercial LED lights such as outdoor LED flood light is vulnerable , there is almost no chance to develop for small brands squeezed by the big brands , what what are the three factors limiting our weak LED lighting market of small and medium enterprise, why are they

outdoor LED flood light

1 , the concept is behind :

The idea involves in many ways. Some of the manufacturer specializing in LED lighting products including the outdoor LED flood light consider that the LED lighting is low-tech, there is no need to invest time and capital developing the outdoor LED flood light and other LED lighting ; others  think that the high-end LED lighting products have no market , there is too big risk to invest ; those who weak implementation of the standard and technical standards and specifications; even lower on legal concepts, resulting in shoddy , fake outdoor LED flood light and related LED lighting products. From the user ‘s point of view , some believe that the light coping with daily lighting is OK , they do not want to spend more money upgrading equipment or buying high-end outdoor LED flood light or other commercial or household LED lighting fixtures ; Some reject the use of complex , high-performance LED lighting requiring high maintenance , they do not care light leakage or not, just be satisfied with the lighting performance,; there are a considerable who used to the old lighting fixtures and are reluctant to accept new LED lighting products.

2, the design is weak :

There are a small number of and even not or the low levels of professional staff designing outdoor LED flood light and other LED lighting factory, which are often temporarily hired for the development of new outdoor LED flood light and other finished LED lighting products, although some of which are lighting expert, but the use of LED lighting is too broad, different products have different characteristics and applications, such as outdoor LED flood light is mainly designed and applied in the square,stadium for outdoor lighting,they do not know all of the characters and the function of LED lighting applications so that may not be able to design the appropriate LED lighting, not to mention to improve and upgrade the LED lighting product.

3 , inadequate investment in developing the LED lamps and lack of technical reserves :

In recent years, some domestic manufacturers have begun discerning greater capital investment to develop some new outdoor LED flood light and other commercial and industrial or household LED lighting products , but in the vast territory of China, driven by economic interests, short-sighted is not uncommon, and who are willing to invest large technical reserves developing and researching the technology of outdoor LED flood light and other LED lights is even more rare.Taking a good look at 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/what-are-the-three-factors-limiting-the-development-of-chinese-led-lighting/

Sweden scenery: LED lights decorate the longest pedestrian bridge in Europe

The Ljusarkitektur which is Swedish design company used unique lighting solutions including the color changing outdoor LED flood light to decorate Europe’s longest pedestrian and bicycle bridge located in Sweden Seer Wo Myers and enhance the iconic status of the bridge. The color changing outdoor LED flood light and other LED lights are used as the light source to highlight the distinctive arch of the bridge, designed using the variable side light color LED lamps as a, while limiting glare, Ljusarkitektur company creative use of the glare shield, this hidden light source design is friendly and harmonious to the surrounding creatures, highlighting that the entire program of the color changing outdoor LED flood light and other LED lights integrate into the overall design of the environment.

intelligent control of LED lighting

Designer ljusarkitektur used the durable and intelligent control of color changing outdoor LED flood light and other LED lighting to highlight the iconic status of the bridge

color change LED lights

The company used a color changing outdoor LED flood light and other color change LED lights to highlights the hanging cables and unique arches of the bridge

LED lights mounted on the outside of the bridge

The color changing outdoor LED flood light and other LED lights is mounted on the outside of the bridge to illuminate from the bottom of the cable.Browsing http://www.lead-lighting.com/products/sid53-1.htm for more information about the color changing outdoor LED flood light.

Article from http://www.lighting-ledlight.com/index.php/sweden-scenery-led-lights-decorate-the-longest-pedestrian-bridge-in-europe/

What are the three factors affecting the price of Chinese LED lighting

There are several key factors affecting the price of LED lighting product including the COB LED flood light:

innovative-led-lighting

1, the Chinese enterprises without core technology

The vast majority of upstream core patents of LED industry lies in the hands of foreigners , Chinese enterprises specializing in COB LED flood light and other commercial and industrial or household LED lighting products have not mastered the core technology , although the capacity of manufacturing LED application products such as COB LED flood light and other finished LED products in China,accounting for 50 % share in the world , but it does account for at least part of the profits.

The main cost of LED lighting is that of LED chip , as long as the prices of chip down , LED lumen unit can be reduced considerably with that of the energy-saving lamps . With the process , the number grow,the costs of LED chip using larger wafers will continue to reduce, of which the rate low by 20% annually in recent years , among the factor on prices of LED chip,the price also includes the enhancement of the efficiency of light, the same price is used to buy a better product , so there is still a significant price cut of the LED chip.

2, it is difficult to cool for LED application products especially the high power LED lights such as COB LED flood light

The cost of cooling maintains the 5% , the effective cooling design is very simple , there are two directions which should know: First , for the LED chip and the path of exterior heat sink, the shorter the better ; Second , heat resistance , which is to have adequate heat conduction path and sufficient ” cooling path .”  of which the cost main lie in that of the structure , the cost of structure accounts for about 20% in that of designing the COB LED flood light and other LED lights,the costs is not much for cooling. The biggest problem now is how to create more creative , more reasonable structure design .

3, LED power supply applications

Power is weakest part of COB led flood light and other commercial and industrial or household LED lighting , restricting the development of LED lighting . Design account for about 20% costs of LED lighting, some of which is higher , with the development of technology, the power accounting for about 5-10 % of the cost of the whole COB led flood light and other LED lighting applications is the most reasonable.

Compared to the other afterlife , in fact, the cost of LED light source including the commercial COB LED flood light is not high, especially LED light is known as excellent environmental protection, energy saving, no mercury , and the price of COB LED flood lightand other LED lighting applications are sliding down at every quarter of year, the price of LED lighting will be able to reach an acceptable level of people sooner of later.Browsing http://www.lead-lighting.com/products/bid19-1.htm for the better understanding of COB LED flood light.

Article from http://www.lighting-ledlight.com/index.php/what-are-the-three-factors-affecting-the-price-of-chinese-led-lighting/

Panasonic will list LED road lighting including the LED tunnel lighting

LED road lighting including the LED tunnel lighting( highways and roads )will be listed on 6th January 2014 by Panasonic . The LED tunnel lighting and LED street lighting product are equipped the control functions by reducing light leakage around to prevent light pollution , but also equipped with automatically reduce brightness to reduce waste functionality. The system complies with the “LED road and tunnel lighting using guidelines ( draft ) ” requirement Japanese Ministry of Land published on September 2011 to meet the conditions on the highway use.

LED tunnel lighting

There will be six kinds of combination of the LED tunnel lighting and LED street lighting listed by Panasonic according to the number of lanes ( lanes 1-3 ) and brightness needs,which will be respectively equipped with pole -mounted and mounted lamp arm , a total of 12 models launched. Colors are white, enabling a wide road dedicated light . by simultaneously controlling the front and rear side ( road side and surrounding side ) light distribution of LED tunnel lighting and LED street lighting is to reduce light leakage , thereby reducing the impact on the surrounding buildings and farmland crops caused by the LED street lighting .

Automatically reduce the brightness to reduce power waste feature called “initial beam compensation ” is equipped with the “Timer Break dimming function ” and ” upper limit value of the beam adjustment function . ” by pre-setting the brightness , the brightness control in order to achieve power saving at the midnight,the brightness of LED tunnel lighting and LED street lighting can be set to 50% by using the timer segmented dimming function , and the use of the beam adjustment function can customize processing by 2.5% intervals between 80 ~ 100% adjustment.

By using these three functions , power consumption can be reduced , while also based on the brightness of the LED tunnel lighting and LED street lighting required by the central government and local government , taking advantage of limits on the beam adjustment function fine tuned is to meet the requirements . The new LED tunnel lighting and LED street lighting product are also equipped with tempered glass , anti-fall lead ” lightning surge function” which is over international specifications standard , in terms of security has been fully considered. In addition , the LED tunnel lighting and LED street lighting also have the durability that can be used at minus 20 ℃,which can also be used in cold areas. Panasonic strive to sell 10,000 units LED tunnel lighting and LED street lighting in 2014. Browsing http://www.lead-lighting.com/products/bid32-1.htm for more information about the LED tunnel lighting.

Article from http://www.lighting-ledlight.com/index.php/panasonic-will-list-led-road-lighting-including-the-led-tunnel-lighting/