年份：2012年

t8 led fluorescent tube and heat sink

With global energy shortage and environmental pollution, the LED with its energy-saving and environmental features of the vast space, the application of LED light products are attracting the world’s attention in the lighting field. In general, the LED lights work stability,  no matter the quality is good or bad, and the lamp cooling is essential, the heat of the high brightness LED lamps (t8 led fluorescent tube) on the market, often using the natural cooling effect, which is not satisfactory. LED lamps, LED light source to create LEDs, thermal structure, drives, lens, so the heat is also an important part, if the LED can not be a good heat, it’s life will also be affected.

1, thermal management is the main problem in the high-brightness LED applications
P-type doping of III-nitride limited by the solubility of the Lord and hole higher than that of Mg activation energy and heat are particularly vulnerable in the p-type region; Sapphire substrates is extremely low thermal conductivity of the device thermal resistance increase, resulting in severe self-heating effect, have a devastating impact on device performance and reliability.

t8 led fluorescent tube and heat sink

2, the heat of high-brightness LED
Heat concentrated in a small size chip, the chip temperature rises, causing non-uniform distribution of heat stress, decline in the luminous efficiency and the lasing efficiency of the phosphor; the device failure rate increased exponentially when the temperature exceeds a certain value. The statistics show that the component temperature rise of 2 ° C, reliability decreased by 10%. When multiple LEDs (t8 led fluorescent tube) are densely packed composition of white light illumination system, the heat dissipation problem is more serious. Solve the problem of thermal management has become a prerequisite for high-brightness LED Street Light applications.

3, the chip size and the cooling of relations
The most direct way to improve the brightness of power LED (t8 led fluorescent tube) is to increase the input power is bound to increase the input power in order to prevent saturation of the active layer must increase the size of the pn junction. Single-tube power increases depends on the device the ability to export heat from the pn junction to maintain the existing chip material, structure, packaging technology, the current density on the chip the same and equivalent thermal conditions, a separate increase the size of the chip junction area The temperature will continue to rise.

Key technical bottleneck in track led lighting have new breakthrough

Over the past few years, prospect of LED develops fast but the household popularity of the process is very slow. “This is not just a price, production or other issue. In addition to consumer recognition problem, there are a number of technical bottleneck.” According to the China Illuminating Engineering Society director Wang Jinsui introduces, this leads to a commercially available track led lighting beans gall lights, LED down light, LED lamps, compared with traditional lamps, it still has very big difference, fass less well than said.

At present, the domestic market oriented with Trinity form of LED products. One of the three major key elements: source, drive power, heat dissipation. The light source is the part of the core products, chip technology mastered by Europe and the United Stated and Japan. Most domestic enterprises adopt buy the assembling way. Therefore, although the LED illumination threshold is not high, yet if you want to do well, it is necessary to solve two key problems–heat dissipation, driving power supply. In contrast, drive power challenges focused on outdoor lighting environment, while heat dissipation is for home used light to enter a large obstacle. According to industry sources, in Zhongshan Ancient Town, there are many LED assembly business, simply to put the track led lighting source assembly into the traditional lamp.  Heat, light and a two optical design is not just as one wishes. Life span can not obtaion the ideal value also.

LED cooling is not good, which will cause the light, and life span shorten. In the current exhibition, the reporter found that the technical problems have had new breakthrough. From the friends of Shenzhen completely subverb the ordinary LED heat, they first introduce the new fin type LED interior lighting series, modeling include ceiling lamp, cast light lamps. According to its general manager, it can save aluminum 4% or more above. The weight is the 1/3 of the traditional lamps. Through more efficient heat conduction and heat radiation, in order to meet the domestic LED relability and life requirements. According to several hundred watts of power LED heat problem, a new research — micro slot cluster compound phase-change cooling technology, become this year’s show is a prominent spot in this study.

t8 led light tubes problems

As the price of LED Lights compared to traditional light sources is a great disadvantage, how quickly the advantages of the LED really play out has become practitioners must face technical problems. To really carve out a new semiconductor lighting era, efforts to overcome technical problems but also from the following aspects:

1. to improve the LED (t8 led light tubes) luminous efficiency problems.
The main method of the LED luminous efficiency improving is to improve the structure and manufacturing process of the semiconductor light-emitting material and the LED chip. Since this part of the work requires a strong theoretical basis and advanced semiconductor process equipment, is still relatively difficult to achieve 200 lumens / watt target road. Although the traditional CCFL lamp power consumption is a little higher,  but the luminous efficiency can reach 50-100 lm / W luminous efficiency white LED devices in the nascent only 20lm / W, which doomed is not suitable as an LCD display backlight LED at the beginning. However, white LED Lamps luminous efficiency of an annual increase rate of 60% increase, so far, the luminous efficiency of white LED devices breakthrough 50lm / W, began to reach the practical level.

2. to solve the life problems of high-power light fades.
As lighting, luminous flux of a single LED (t8 led light tubes) output must be large enough to want to increase the flux LED, you must first inject a sufficient electric power. But the temperature rise of the LED chip can not be too high, otherwise the properties, especially the service life will be greatly affected. Clearly, the design of a larger input power LED components and lighting, in addition to the required larger chip, but also must have good thermal structure.

3. reasonable lighting structure design challenges
LED lighting by a number of LED tubes, the discrete nature of its parameters, also a technical issue. In addition to the pre-selection, classification, and try to ensure consistency, we must also design of the lamp structure (including the LED arrangement and location of the layout) and on an appropriate driver circuit, to prevent the occasional energy concentrated and burned part of the LED.

 

t8 led lighting for Miner Lamp

As the substantial increasing in luminous flux of the LED, high-power LED lighting applications become possible in more places. Because of the technology in research and development costs, technical applications, the use of the concept of reason, the cost is still relatively high, but a series of advantages inherent in such energy-saving LED lighting, longevity, safety, environmental protection, maintenance-free, as an application trends replace the traditional lighting can not be stopped. The successful application of high power LED lights (t8 led lighting) source in some special areas of lighting.

Miner belonging to the mine with explosion-proof lamps, miner’s daily working hours as long as 12 hours or more, and therefore the weight of the lamp and the lamp luminous flux,  discharge time and service life have high requirements for these indicators are often conflicting, requirements such as the lamp luminous flux, you need to improve the color temperature of light bulbs or increase the power of the bulb, but increase the bulb color temperature will greatly reduce its use life, frequent bulb replacement, increases security risks.

t8 led lighting for Miner Lamp

Increasing the lamp power is bound to increase the battery capacity to ensure the continuous miner working hours, the result is the lamp size and weight increase, the inconvenience to the miners to carry and work, so the miner use incandescent bulbs.

LED miner’s lamp has the following advantages:
1. using the most advanced fourth generation of solid state light source, the life of theoretically up to 100,000 hours.

2. the beginning of illumination (1 meter) up to 1200lux, lighting 11 hours after the illumination is still greater than 600lux effective in improving the working conditions of miners.

3 new high energy battery, small size, large capacity, and once fully charged, continuous illumination of not less than 15 hours.

Completely changed the traditional miner’s lamp and battery sub-structure model, weighs less than 200g, wearing very light.

The traditional miner’s lamp incandescent operating temperatures up to 2500 degrees, and high-power LED miner’s lamp LED Street Light(t8 led lighting) source operating temperature only 60 degrees less than that even if the lamp is smashed not detonate gas applications mature lithium power management technology, the fundamental solution to traditional battery short circuit, leakage, explosion risks, therefore, the LED Tubes future (t8 led lighting)in the miner will quickly replace the incandescent lamp miner’s lamp market.

 

The home smd LED lamps price is no longer superior

From October 1 this year, China will ban the import and sales of general 100 watts incandescent lamps, this is undoubtedly a good news for the LED entered into the civilian market. Lighting Far in Guangzhou last week, the pace of LED products for civilian R&D sudden acceleration, and a richer product applications. Although most commercial lighting regards display as the leading,  yet many companies also launched the home smd led lamps.

These new products have focused the different design on functions: warm light/cold light, some even can adjust the light color. Different from the past to create the relatively high-end products this year, manufacturers realized that the products close to life will be more popular. For example, how to control the light range of LED bulb? This type bulb can control light range and angle according to their needs, and also can meet the needs of different scenario’s space.

LED lighting on the commercial market is the trends. The international lighting giants have been optimistic about this future market. In this exhibition, the world’s second largest optical semiconductor manufacturer OSRAM display LED products with high quality, flexibility, easy to install characterization. The new launch of Prevailed of light engine, color rendering index of up to 90. Through the active color temperature control technology to maintain a high degree of consistency of light and color between the module to solve the smd led lamps, color cast phenomenon.

The design of the Philips booth is like a “light theater”, the scene of a transparent pyramid projected “waistline” 3D images. The most attractive is the two LED bulbs that are most suitable for mass consumption.

At present, China’s lighting industry is in revolutionary change period. Incandescent lamp will be eliminated, energy-saving lamps to be very influential. LED is just unfolding. Smd led lamps are a industry technical revolution, A LED lamp generally can save 70%~80% compared with energy-saving lamps. The life is 4 times than energy-saving lamps, but the price is 3 to 4 higher than energy-saving lamps. High price become a barriers for household. In the current exhibition, on Shun lighting in LED civil lighting ofr a new breakthrough, a 7W bulb of 3 pieces only need 100 yuan. Corresponding to the traditional lamps with 33 yuan, which is more expensive, but compared with the mainstream brands of energy-saving lamps, the price gap is substantially reduced.

t8 led replacement lamps for outdoor use

As the need for the long life,  LED products should be under good design, good material, good technology. Similarly, the composition of the product by the LED and other components of good design, good components and materials, a good process.

t8 led replacement lamps for outdoor use

To make real long life, low power consumption, less maintenance purposes. To use the at the same time of LED lamp (t8 led replacement lamps) beautify the environment, do not forget the the the the impact of of the non-performing products right the environmental safety Xing. If it is not enough working voltage, or the operating voltage is too low there will be light does not shine bright enough, if the supplier may be leakage, you can the QT1 test IR curve to determine the brightness and wavelength with lead-free production, the LED is not a requirement time and temperature in the wave front furnace can withstand lead-free, LED is limited, world-class LED can only withstand high-temperature impact of three seconds to five seconds, the wave front dip tin temperature over 260 degrees.

LED lights and the lower limit of the upper limit of the LED lights are significant differences. In this situation, in general more difficult to control. LED lights  (t8 led replacement lamps) are more vulnerable.

1. Damaged by environmental factors
The lamps will be installed on the roadside or on bridges are subject to different vibration impact, the source of vibration from passing vehicles, especially in the past overloaded vehicles. When the lamp is a component or somewhere with an external source of vibration resonance, will produce components or circuit damage.

2. Damage caused by human
When the lamps are within people’s reach, they would  often be damaged  by some people intentionally or unintentionally pressing, shaking, beating, or damaged by the collision of the objects in the handling.

3. Use of the product safety issues
The above analysis of various unfavorable factors will cause a certain degree of damage to the use of LED products (t8 led replacement lamps) , which in turn damage of LED products will also affect the surrounding environment. This public environment will cause a potential security problem.

 

the best led grow light and High Power LED

After the invention of the LED Street light bulb more than 100 years, advances in lighting technology, lights are also facing a serious threat. In order to achieve the traditional lamp lighting to LED lighting transition (the best led grow light),  Ultra-high brightness LED refers to AlGaInp red, orange, yellow LEDs, GaN-based blue, green, violet and UV LED.

We know that the glow is an energy conversion phenomenon. When the system by external excitation, the lower state transition from stable to unstable energy state. When the system consists of an unstable energy state back to the stable low-energy states.

the best led grow light and High Power LED

The structure of the LED Products chips (the best led grow light) of the PN junction electrode and optical systems. When the electrode with a positive bias, electrons and holes were injected into the P and N area, when the non-equilibrium minority carrier and majority carrier recombination, the excess will be the form of a photon energy into light energy. The light emission process consists of three parts: the forward bias carrier injection, combined radiation and energy transfer. Light emitting diodes have many advantages: low operating voltage, low power consumption; stable performance, long life; impact resistance, vibration and strong; light weight, small size and low cost.

Current of the LED light source (the best led grow light) for display and short-range, low-rate optical fiber communication, such as the indicator of a variety of instrumentation, digital and other symbols of the text display. Due to reasons such as brightness and color, LEDs also can not be used for general-purpose lighting, which is the LED future a very important direction of development.

Whether we choose a way to produce white light, if you want to replace the light bulbs, LED lights must be able to offer more light, must have higher energy efficiency. White LED per watt of power consumption can produce dozens of lumens (lighting used to measure light intensity units), the efficiency of incandescent bulbs. White LED is about 10% of electrical energy into light, incandescent bulbs, the conversion efficiency of 7% -8%. However, the white LED is clearly much more expensive than incandescent bulbs.

the best led grow lights and Brake lights

We can find a square or rectangular red brake lights in the middle of the back of the new car higher position. High brake lights, the scientific name of this lamp above the general than the rear of the car on both sides of the brake lights for some distance. A CHMSL the role warning behind a moving vehicle, in order to avoid rear-end accident. Normally, there are no high brake lights of vehicles, especially in the chassis to lower the car and mini-cars in the brake after the brake lights location is low, usually not enough brightness, followed by driving the vehicle chassis trucks with higher buses and bus drivers sometimes difficult to see. Therefore, the hidden danger of rear-end accident. Also,  the best led grow lights are difficult to produce. the best led grow lights and Brake lights A large number of research findings prove that the CHMSL able to effectively prevent and reduce rear-end accidents. Therefore, high brake lights, has been widely applied in many developed countries. Accordance with the regulations in the United States, for example, from 1986 all new cars sold must be equipped with CHMSL; from 1994, all sales of light trucks must also be installed CHMSL. By the end of 2006, there are at least 60% of the cars are equipped with LED type CHMSL. The benefits of LED Brake Lights are including faster lighting speed, higher efficiency, longer working life, and, very thin flat red LED array also has the simplicity of the design / installation. LEDs (the best led grow lights) can achieve full illumination in less than 1ms (rather traditional bulbs take up to 200ms to produce its maximum brightness), so that the rear of the driver of a vehicle identification time of the brake lights will be greatly reduced, thus reduces the probability of rear-end collisions. In order to achieve the performance and maximize the working life of the LED brake lights, we should use the brake system and also need a way to drive these red LED string, the appropriate LED (the best led grow lights) drive, which is essential. Compared to incandescent bulbs, power consumption also fell as much as 80%, resulting in the effect of saving fuel consumption. Its effective period of use will easily exceed the life of the vehicle, thus eliminating the need for replacement. In addition to the the CHMSL outside, some vehicles and motorcycles are still the main brake lights using LED Lights instead of incandescent brake lights.

The acceleration of industrial integration, LED projection lamp will illuminate family

Matsushita Electric machine(Beijing) Co., Ltd, chairman of Kimbra accept reporter to interview and, said the comprehensive development of China’s LED lighting is much more developing space, So Panasonic LED ratio in the business have a greater growth, especially rapid development of roads, public facilities and other fields.

Not only is the Panasonic, but also Philips upgrade China business to its global strategic layout. led projection lamp in Philips settle down in Chengdu last year, aiming at to invest 250 million euros in China within five year plan in order to improve the value chain of LED Street Light. Philips Lighting Division of Liang Hanfeng of president of big China division says,” our goal is to achieve 50% business volume in 2-15 years.

Right now Hengen in the lighting enterprise promote bottleneck. Tsinghua Tongfang group vice president Wang Lianghai that the addition of LED photoelectric conversion efficiency to be improved, the price is still popular in LED biggest bottleneck. The reporter also learned that, since last year, upstream of the LED chip prices and related materials cost is in drop, but still high higher than the ordinary energy-saving lamps products.  According to Wang Lianghai,  the price between current market LED lamp and the normal energy saving lamps is different in more than 5 times.

At present, led projection lamp applications more concentrated in commercial and civil fields. But the reporter learned from the exhibition, manufacturers generally think that civilian area will be the future focus on the development of domestic LED industry.

The industry hope that it is the State Council recently study determined to promote energy-saving products such as home appliances consumptions policies and measures, deciding to arrange 2.2 billion yuan to support energy saving lamp and LED lighting promotion. China’s semiconductor lighting / LED industry alliance secretary Guan Baiyu said, subsidy rules execute at the end of this month. The primary beneficiary will be the competitive large enterprise LED. Wang Lianghai expected, 2.2 billion subsidies will make LED lighting products price fall 15%-20%.

Tang Chao said, except the 2.2 billion subsidy, Guangdong Province plans in 3 years the province’s public domain mandatory replacement of led projection lamp policies on the industry as a whole to drive, but also pointed out that the subsidy policy have certain limitations. Only a portion of corporate profits, the future will aggravate the competition of the industry. Wang Lianghai expresses, at present among one thousand LED enterprises, famous brand is no more than 10, but occupy more than 90% market share. The reporter also learned that, from the beginning of last year, some small and medium-sized LED enterprises go bankrupt. The industry reshuffle began.

“500 million cake” boom the LED lamp market

A serious of countries support policies drive the LED Lighting Products hot. This week, on tuesday, the largest lighting exhibition in Guangzhou ended. This time, it attracted more than 2600 exhibitors, covering multiple areas of professional lighting, commercial lighting, LED raw materials, including Philips, Panasonic and other domestic and foreign well-known manufacturers. Report learned from the four-day exhibition that the manufacturers have confidence in the development of the industry, and think that the integration of the domestic led lamp market is accelerating. The future will have a number of small and medium-sized enterprises are facing elimination.


High temperature, rain and other adverse weather conditions did not affect the popularity of this year’s Guangzhou International Lighting Fair, reporter for two consecutive days at the scene to see the the crowded scene. The data show that from the show organizers, a total of more than 2,600 exhibiting companies, covering 21 exhibition halls, a total area of ​​220,000 square meters, more than 100,000 viewers approach.

Such a hot scene from the domestic led lamp market contains prospects for the future and enormous business opportunities. According to China Semiconductor Lighting Technology Development “12” special planning”. the LED lighting industry in China will reach 500 billion yuan in 2015, accounting for 30% leading enterprises, focusing on cultivation 20-30 leading enterprises, completion of the 20 national industrial base and 50 demonstrate city, and promote China’s semiconductor lighting industry into the world’s top three. Domestic and foreign firms want to receive a bigger one from the 500 billion big cakes.

The data show that the overall size of the domestic LED lighting applications in 2011 spent 121 billion yuan, with an overall growth rate of 34.44%. It is the fastest growing part of the LED Street Light industry. The general lighting growth is the most obvious, and the overall share has reached 25%. This growth will further enhance. According to the incandescent road map released in China last year, from October 1 this year will ban the sale and import of more than 100 watts and general lighting with incandescent lamps, to October 1, 2016 prohibit the sale and import of 15 watts and above general lighting incandescent lamp, incandescent lamp will gradually withdraw from this year, the stage of history,  to replace the existing incandescent market size with over one hundred billion yuan. Tang chao, director of marketing, believe that LED lighting will usher in new opportunities for development. He expects led lamp market will replace the traditional lighting wihin three to five years.