标签：led solution

led solution for high bay lights

Break the LED lighting “were praised” shackles

As we know, LED – light-emitting diode, is a way to turn electrical energy into visible light solid semiconductor devices, it can direct the electrical to optical. It can be said, semiconductor lighting is just part of the semiconductor applications. The Semiconductor Lighting has many traditional light sources do not have the characteristics of small size, low power consumption, long life, high-brightness low-calorie, environmentally friendly, durable, multi-changing, state-of-the-art technology. Thus, according to the LED characteristics as well as the needs of the market, the led solution can be designed colorful, consumer demand for the product.
led solution for high bay lights

The main stumbling block to many more households become the face of high prices of LED lighting, led solutionlighting companies in the technology, strengthen product development, focusing on large-scale production to lower prices to compete for the alternative energy saving lamps, incandescent market share, at the same time, pay attention to the marketing mix strategy to break the long-term and effective strategies for LED lighting development shackles. The marketing mix refers to enterprises in selected market target, considering the environment, capacity, competition to be the best combination of factors controllable by the enterprise itself, use, achieving their corporate goals and tasks. Applications in the LED lighting market, led solution lighting companies according to their own market segments, develop the optimal combination of product strategy, pricing strategy, channel strategy. Different needs for alternative light source for families, hotels, shops, office light, LED enterprises and the development of the marketing mix strategy. For example, demand for ordinary household light source is positioned to meet the lighting function, high cost-effective, energy-saving. The shop lighting not only meet the basic lighting, energy saving, also need professional lighting characteristics, dimmable light theme or scene mode. Thus, for the different needs of customers to develop the best marketing mix strategy will be to break the LED lighting development, “” one of the main methods were praised.

Talent the hunger LED enterprises rely on “grab” or “support”?

Strengthen personnel training boost LED enterprises rise

2013 just opened, enterprises around the world recruit marketing class talent, salesman, technology class staff, designers and other recruitment information on flying. Many companies are beginning to ready the guns and ammunition, gearing up to open play Battle of 2013 channels. However, LED industry rapid development, the surge in demand for LED talent, completely not keep up with the pace of development of the LED industry and institutions of higher learning in this regard personnel training. It goes without saying, the LED lighting industry talent Structural Deficiency, the talent frequently jump nests and enterprise paid “persists in the form became the industry status quo. All in all, LED industry is a lack of skilled sales staff understand LED technology of high-end talent.

Faced with such a status quo, LED enterprises should speed up cooperation in personnel training and tertiary institutions, cultivate talent with LED basic education. Second, to strengthen corporate training. In particular, is to strengthen the training of business personnel. It is understood that the LED industry is most lacking is skilled sales staff, sales staff and customer chat technology had talked about the content, and now a lot of business people know nothing about the technology. Including some years company employees, customers often they asked was speechless.

Status and Strategy Analysis of China’s LED lighting market in 2013

The price cuts Billiton channels still the main tone of the 2013LED lighting market

Relevant survey report shows that in 2012, the LED lighting industry engineering fiery retail slow praised in LED lighting terminal “as news coverage. Despite last year’s chip price dropped more than 30% of the packaging technology has steadily improved, but relatively energy-saving lamps, LED lighting products is still high above “. Secondly, LED enterprises in China in the middle and lower reaches of the package and the end-product applications and product homogeneity, channel homogenization, market demand, oversupply situation seriously troubled the LED business. Relative to last year, due to the price war caused by the closure of some companies, the the industry reshuffle phenomenon, 2013 price cuts Billiton channels, and lower prices to clear inventory is still the main tone of the LED lighting market.

led solution and heat sink

Analysis of the reasons for the rise of led lighting lighting source temperature.

Limiting factors currently limit the development of led lighting in addition to the cost, is the heat. The LED is a semiconductor light emitting device, with the change of its own temperature. Its characteristics change dramatically. Led the higher the temperature, the light source the sooner the light fades, the shorter the life. Led normal use standard terms of light decline to 70%, when the junction temperature of 65 ° C, led life more up to 90,000 hours to 100,000 hours; the junction temperature rose to 75 ° C, life expectancy dropped to 50,000 hours life of 20,000 hours; junction temperature of 95 ° C, the light source life; When the junction temperature of 105 ° C, more than ten thousand hours led solution. In view of this, the key to extend the led light source life is to reduce junction temperature to accelerate the cooling effect of the led lighting.

led solution and heat sink

led in the power drive. Not only produce light energy, but also generate a lot of heat. For the LED chip is smaller, its own thermal capacity is also small, the heat generated can not be conduction out in a timely manner, and therefore will produce a high junction temperature. LED illumination light source, in addition to as the visible light energy consumed, the other energy are converted into heat, about 70% of the electrical energy into heat energy. Further, since the the led package small area, less cooling by convection and radiation, and also to make the led light led solution source to the accumulation of a large amount of heat, so that the rise of the temperature of the LED lights source.

led lighting on the hazards of heat bad
Electronic components deformation
led lamps by a number of electronic components. The coefficient of thermal expansion of each component of the material is not the same. When the temperature rises, the expansion ratio of the combined elements is not the same, can lead to the material bending deformation occurs even at the connection, because the stress is too large cracks.

Electronic components blown
LED semiconductor element as a heat source when the temperature l, its impedance becomes small, increase in current, thermal energy increases, the temperature rises, so the cycle of the vicious cycle, prone electronic components blown circuit fault.

Accelerated aging encapsulation material
LED chip packaging use of the epoxy resin, is easily oxidized when the temperature rises, aging and embrittlement, such that its light transmittance decreased, thereby causing led out of the light quantity decrease. The higher the temperature, this phenomenon becomes. After repeated at high temperatures led solution. Material multiple expansion and shrink, will reduce the strength of the material, thereby undermining the performance of the material failure affect their life.

solar led lighting outdoor and led solution

Most lighting designers believe that the quality of all LED products are the same. However, many LED manufacturers and suppliers, Asian manufacturers to global supply low-cost LED. Surprisingly, only a small part of these manufacturers to create high-quality LED. For applications that only used as a simple indicating the role of the low quality of the LED is sufficient to meet the requirements. However, in many areas of the requirements of consistency, reliability, solid-state instructions or lighting must be high quality LED lights, especially in harsh environments, such as highways, military / aerospace, and industrial applications.

solar led lighting outdoor and led solution

Safety requirements is very harsh, LED must meet high quality requirements of the fundamental factors in the environment of the New York subway station.

What are the factors that distinguish between the LED level of quality? How to tell the difference between the two LED’s? In fact, the selection of high quality LED from the chip until assembly is complete, during which there are many factors to consider. Tier-OneLED manufacturing company to produce excellent and consistent indicators wafer start from the high-quality LED manufacturing materials, enough to make a good chip. Determine the conditions of the LED performance, the chemical materials used in wafer production process is a very important factor.

A 2-inch wafer can be cut out more than 6000 LED chip, there is only individual chip performance and overall. A good chip manufacturer makes chips in the difference of color, brightness, and the voltage drop is very small. When the LED chip package is completed, many of their performance, there may exist a great difference, such as perspective. In addition, the impact of packaging materials is quite large, for example, silicone epoxy performance.

Classification ability

Excellent LED manufacturers can not only produce high quality chips, but also has the ability, depending on the LED color, brightness, voltage drop and perspective of its classification packaging. High-quality LED suppliers to provide customers products with consistent operating characteristics, while lower-quality LED suppliers only provide LED similar to the “mixed”.

For high-end, quality-demanding applications, such as the boundaries of the airport runway lights must meet the FAA-class color and brightness specifications, to ensure consistency of performance and security, LED packaging is strictly limited. Packing poor LED is used in demanding applications will lead to premature failure and other non-consistency problem is likely to lead to major accidents. Avoid the use of “mixed” products in the high-end and quality demanding applications in order to avoid equipment downtime, and ensure that the provisions in the design of the LED with reliable operating characteristics, it is very important.

Products supporting capacity

In addition to the separation of the assembly and supply of LED, LED indicators for its performance, brightness and color have a very significant impact. Due to ambient temperature, operating current, the circuit structure, voltage spikes and environmental factors and so can affect the LED performance indicators, the appropriate circuit design and assembly is critical to protect the LED and to ensure performance. LED tube manufacturers use a variety of techniques and different materials to design the circuit structure and assembly, in most cases, the LED assembly on the experience level of the difference will cause the LED in the same application there are differences in overall performance and reliability.

With the rapid growth of the LED needs, serve the global market manufacturers and assembly plants also increasing rapidly. It is regrettable that the surge in support for manufacturers not only a large number of low-quality LED packaging and LED design engineers to experience a relative shortage of Therefore, in addition to the existing experience and accurate screening LED suppliers, OEM manufacturers must also examine their circuit design and assembly technology to ensure that it meets the design specifications, and design to provide sufficient cooling capacity, because the cause of LED failure and performance The inconsistency of the main factors is overheating.

To ensure that it meets design requirements, the OEM must detect the LED assembly and the circuit structure

Third-party testing

In order to eliminate the injustice that exist in the test, many companies have commissioned a third-party to test the LED assembly and circuit structure. LED devices may be tested in the harsh environment, or use a few weeks. During the test, at the same time the pressure, temperature cycling, fixed voltage / change current fixed / change test, test to determine whether the LED to meet the application requirements in other harsh environmental conditions. Test before and after a large number of parameter changes must be recorded at the same time to monitor the changes in the measured LED brightness, color, and voltage drop.

Accelerated life cycle testing is a key test to avoid failure in special applications. The test helps to ensure that screen out those expectations at least for 100,000 hours, but only work 1000 hours in advance of failure LED. This situation may arise because of the low-quality LED (high quality LED assembly designed to be unreasonable) will reduce the brightness after 1000 hours of work. In fact, if a lower-quality LEDs have a higher drive current at an early stage is high-quality LED is brighter, however, the excessive current causes the LED heat too fast, the final results are dimmed or burned.

 

In addition, the assembly technology to some extent on the LED performance than the chip itself is also a big example. The design engineer should ask for the reliability of the specifications of LED to LED suppliers, and the LED assembly and testing to ensure that the relatively high brightness is indeed better. Some excellent LED suppliers can guarantee the reliability of their LED assembly can be sustained for three years or longer, and can further provide the ultimate LED products, including the appropriate design with high quality LED and for special applications.

The importance of the detection

Two applications within the field of transport helps to explain adequately tested, how to prevent the LED fails to provide a high degree of visibility applications. In the early 1990s, LED brake lights for cars and trucks. Some LED designs quickly inconsistencies in the performance indicators, and soon burned down, the reason is perhaps due to the quality of the LED, perhaps completely the design of the product itself. Until recently, the traffic lights be more appropriate, when the LED light, this phenomenon was attention. The design covered with LED diameter of 8 inches or 12 inches of PCB companies must consider in the choice of the LED and to improve the design environment and application requirements.

Any of the above situation, if the stress tests or accelerated life cycle testing has been done can be considered high-quality LED or LED assembly is qualified, it can be applied to require a longer service life and higher reliability the occasion.

Rational use of

Not every application needs high-quality LED assembly technology. If the LED assembly does not meet the requirements of harsh environments, the application will not necessarily greater security risk, or, if the maintenance costs of the final product is not very high, the use of poor assembly techniques may be more appropriate.

The most fundamental point is that the LED must be able to afford. Therefore, the cost requirements within the constraints, we must consider the supplier of the product packaging grade, assembly design experience and testing. Designed to meet application and market demand is the most effective means to serve the end user. If the application requires high-end solution, then the chip vendor’s choice of design experience, and testing are all factors to be considered. If you do not consider the sales prices of high-end products, it should be carefully considered other relevant factors of the difference between good and bad LED. Have to classify the ability of packaging grade LED suppliers, as well as to reliability, accelerated life cycle testing, manufacturers can be long-term cooperation, which helps manufacturers to adopt more reliable LED development of high-end products.