作者：Blade

smd led heat sink

Traditional thermal conductive material for metals and metal oxides, as well as other non-metallic material, such as graphite, carbon black, A1N, SiC, etc.. With the development of science and technology and the production of many products of the thermal conductivity of the material put forward higher requirements, has excellent overall performance, light weight, chemical resistance, and excellent electrical insulating properties, impact resistance, and easy processing molding . The thermal conductivity of insulating polymer composite materials because of their excellent overall performance is more and more widely used smd led.

However, due to the polymer material is more than a poor conductor of heat, limiting its application in thermal conductivity, and thus the development of new polymer materials with good thermal conductivity, become an important development direction of the thermal conductivity of the material now. Especially in recent years, with the rapid development of high-power electronics, electrical products, is bound to appear more and more heating products, leading to product efficacy to reduce life shortening. Some data indicate that the electronic components temperature is increased by 2 ℃, its decreased reliability 10%; 50 ° C when the life expectancy is only 25 ° C when the 1/6.

smd led heat sink

The heat conductive filler is mainly divided into two: one is a thermal insulating filler, such as a metal oxide filler, a metal nitride filler. Another is the thermal conductivity of non-insulating filler, such as carbon-based filler, and various metal filler and the like. The former is mainly used for electronic components encapsulated materials electrical insulation performance requirements of the occasion, the latter mainly used in chemical equipment, heat exchangers lower electrical insulation performance requirements of the occasion. The type of filler, the particle size and distribution, the filling amount and the filler and matrix interface between the performance of the thermal conductivity of the composite material has an impact smd led.

The thermally conductive plastic using the matrix polymer: PA (nylon), the FEP (perfluoro polypropylene), PPS, PP, PI epoxy resin, POM, PS and PS and PE composite material or the like.

The current domestic and international power LED Flood Light industry lamps commonly used aluminum as a heat sink material of the shell, using thermal plastic shell can save a lot of energy and improve production efficiency, reduce the cost of LED products have a very real economic significance. Use plastic could greatly expand the lighting engineers to develop products Ling and creativity, more lightweight design beautiful products for faster promotion to the mass consumer. Based on the basis of extensive research, we propose to use cooling plastic mold production 8 watts, whether the temperature of the various parts of the 10-watt LED downlight base, check product conform to the requirements for eligibility to test heat plastic for mass production smd led.

osram led in medical use

1 IPL (photorejuvenation)

IPL technology is defined as the use of continuous intense pulsed light the way for non-ablative skin rejuvenation treatment in the low energy density. Within a few short years since its inception in 2000, photorejuvenation technology rapidly growing popularity of the country, has been widely used in major cities, has become one of the primary means to improve skin photoaging, this technology can significantly improve skin wrinkles, texture rough, irregular pigmentation and large pores phenomenon has been recognized many technical professionals and beauty demands. The characteristic histological changes of skin photoaging elastic fiber degeneration and dermal matrix collagen fibers mature obstacles, resulting in the skin laxity and wrinkles osram led.

The study found that the visible to near infrared LED light to penetrate the skin epidermis to reach the dermal layer of photothermal and photochemical effects, prompting the elastic fibers and collagen fiber regeneration and re-arranged, so as to achieve the effect of reducing skin wrinkles, increase flexibility.

osram led in medical use

The prevention or treatment of inflammatory pigmentation

Post-inflammatory skin pigmentation in the skin, the physical and chemical beauty is common, difficult to avoid the phenomenon, particularly apt to occur in Asian populations. For example, in clinical practice to reduce the degree of skin pigmentation after laser treatment generally too strong season to avoid ultraviolet the Zhu Huanzhe avoid the sun, wear sunscreen, but post-inflammatory pigmentation is difficult to completely avoid. In recent years, the study found that of 660nm LED Rgb Lights can prevent or even treat this inflammation after skin pigmentation, which will be a new research focus for skin beauty industry osram led.

3. Promote wound healing

Can be seen in the near infrared band of the LED light can promote the growth of epithelial cells after trauma and promote wound healing. Very good therapeutic effect for the healing of chronic ulcers in diabetic patients with lower extremity.

4. Reduce inflammation

Have series of studies show that the LED having an anti-inflammatory role. The study found that the 635nm LED light can be suppressed gingival fibroblasts release of inflammatory mediators – prostacyclin E2 (PGE2), thereby reducing the inflammatory response of the gums. In the pulsed dye laser treatment of the skin photoaging If the LED light source in advance before irradiation can reduce the dye laser induced skin erythema, swelling, and pain and discomfort. LED light source ahead of irradiation can reduce the side effects of radiotherapy in breast cancer patients before radiotherapy.

5. Scar prevention

Keloid clinical impact of beauty but also difficult kind of skin disorders, the treatment of skin damage caused by connective tissue hyperplasia. Patients often have physical scars. Start small and hard red papules clinical slowly increasing, producing a circular, oval or irregular scar above the leather was a crab-like stretched out skin smooth, shiny, and may be associated with pain, itching and discomfort. Difficulties in clinical treatment, the effect is not ideal. Studies have found that LEDs can significantly improve the patient’s pain, itching and discomfort, the scar flattened, and also has the advantages of non-invasive osram led.

6. Role

In addition, LED can also serve as a non-ultraviolet phototherapy instrument, used for photodynamic therapy, treatment of alopecia, alleviate skin damage after ultraviolet irradiation, and so on.

In short, as a new type of light source, LED has been gradually applied to the skin medicine, with the innovation of LED lamps and medicine the LED mechanism of biological effects research, LED applications in dermatology will have limitless prospects. LED has high security, and can be used as a home medical equipment.

 

 

cree led street lights design

Based on a tight budget considerations, the use of LED lighting can save electricity through less maintenance cycle and power-saving innovations dimming technology.

After the evolution of technology in recent years, LED light output, luminous efficiency and service life has been significantly improved, so more and more attractive to the majority of applications for various other light source in the past, especially street light is can Using the application of LED  technology cree led to be addressed.

cree led street lights design

LED-based street light first in a few years ago in the streets, although they are mainly used to show the design concept or campus test lamp. Yellow phosphor is the only available and stable at the time, one of the phosphor to produce white light output with a blue chip. Most of these lights are cool white G24 LED Light design, color temperature of about 6000K even higher. Unfortunately, most people do not like the cold white light emitted by these street lights, some even complain about the cold white light will bring a cold feeling. Others think the color is pale in the cold white light source irradiation.

LED and phosphor manufacturers heard for the first-generation prototype set feedback, and for street lighting applications developed using more natural, neutral white 4000K color temperature of the new high-brightness output LED. Example, Avago Technologies (Avago) ASMT-JN32-NVV01 will be able to provide a 350mA the 100lm or 700mA current offers light output of 160lm minimum typical 4000K correlated color temperature (CCT).

LM-80 LED lifetime test proposed standard requires the LED light source must have a minimum of 35,000 hours of life, the new high-power LED high junction temperature cree led can reach a minimum of 60,000 hours (L70, B10). View to a daily average of 12 hours (approximately 4400 hours) the use of time, the street lights use the latest LED technology can easily reach 10 years of life without the need to replace the light source.

, Modern LED package has a low thermal resistance of 6 ~ 9 ℃ / W (K / W) from the point of view of product package. This helps as much heat as possible is passed from node to the heat sink. In addition, the light output under different junction temperature very stable at 25 ° C / to the changes in the range of 110 ° C / junction temperature is less than 20% cree led.

 

 

led bulbs life span

In the the numerous green light applications, LED relative to other light source solutions more energy-efficient, easy to the assembly design a light source technology, which in lighting source applications, high-power white LED compared with the most frequent light-emitting components, butthe white LED luminous efficiency, single power performance has R & D progress actually white LED luminous uniformity, packaging material life still exists, especially in the application of the chip cooling limit is the development of the LED light led bulbs source applications first and foremost must beimprove the problem …

High power white LED used in the day-to-day lighting purposes, in fact, received increasing attention in the green light, has become the first choice of the development of environmentally friendly light source. But in fact the white LED are still many technical bottlenecks to be overcome, there are related improvement program to strengthen the focus on features and performance of white LED luminous uniformity, the life of the packaging material, heat strengthening all aspects of design bottleneck improvement.

led bulbs life span

The green light increased demand for high-power white LED applications led bulbs qualify

LED Panel Light source to be the main cause of all ages, is nothing more than the product of long life, light – high power conversion efficiency, material properties can be fitted in any plane. In the development of the day-to-day lighting source, due to the need to achieve practical lighting needs, the original to indicate that the use of LED lighting applications will not be able to correspond directly from the chip, package, carrier board, production technology and an external circuit must be strengthened, in order to achieve the high power required for lighting purposes, high brightness lighting utility.

Observed on the level of market demand for white LED lighting applications market development, it can be said future higher dosage of the project, but to use utility, white LED lighting applications must focus on functional improvement. One is to strengthen for the LED chip led bulbs, e.g., to increase their optical – electrical conversion efficiency, or to increase the chip area, to allow a single LED light emission amount (flux) reaches its design limit. Second, is a compromise design program, the more difficult to continue to increase the area of monolithic LED chip under the premise switch to multi-chip LED chip is packaged in a light source module, but also the practical technical solutions can be achieved close to the aforementioned method .

 

spectra led grow light aging test

LED light-emitting principle:

LED industry in China started in the 1970s. After 30 years of development, China’s LED industry has initially formed a relatively complete industrial chain, including the production of LED epitaxial wafers, LED chips preparation, LED chip packaging and LED product applications, including.

LED lighting LED III – IV compound, such as GaAs (gallium arsenide), GaP (phosphide gallium), GaAsP (gallium arsenide phosphide) and other semiconductor made of, its core is a PN junction. So it has the general PN junction IN characteristics, namely the forward pass, reverse-blocking breakdown characteristics. In addition, under certain conditions, it has a light emitting characteristic. Forward voltage, electrons from the N-region into the P region, the injection of holes from the P region N region. Into each other regional minority carriers (minority) part of the compound and shine with the majority carrier (number of children). Assume that luminescence occurs in the P region, the injected electrons and valence band holes directly composite and light-emitting, or first captured by the luminous center hole recombination. In addition to this light-emitting compound, also some electronic non-luminescent center (the center between the conduction band, dielectric tape near the middle) capture, and then with the hole recombination, the energy of each release is not and can not form visible.

Market for LED lighting products spectra led grow light:

LED explosion proof light source that some people call the long life lamps, which means the light never goes out. Solid cold light source, epoxy encapsulated, light body and no loose parts, there is no filament light easy to burn, heat deposition, the light fades and other shortcomings, the service life of up to 60,000 to 100,000 hours, longer life than traditional light source 10 times or more.

spectra led grow light aging test

Therefore, to achieve this ideal state, the anti-aging ability is particularly important.

Content:

Aging test of an LED lighting products spectra led grow light:

LED backlight and lighting products for a long time aging test is a very important test, aging test can be detected early fault LED products in the long-term use may produce light fades, color temperature change, leakage, and conducive to the stability of the product. The ITECH power and burn-in test software is mainly used in aging test LED backlight and lighting products.

LED the aging lighting products test results and use of equipment have a great relationship, aging equipment and LED lighting products, must be guaranteed in the full heat of cases to determine the best time of aging, by aging system monitoring data, analysis and comparison, to get the most accurate test data, so as to achieve the purpose of the production and testing.

Second, LED aging test application of the power supply and the aging system should have features:

LED current work is very special, the test system in order to obtain reliable data. In general, the power LED aging test application and aging system should have the following characteristics:

1, high power than the NC DC power supply, wide voltage and current usage, the wide range of applications spectra led grow light;

2, can automatically control the rate of change of the voltage and current, the maximum possible reduction in cost;

 

3w led grow for new year

1 Introduction.

With the rapid economic development in recent years, the car’s design and manufacturing technology are also increasing, also gradually rich functionality of the car, the car has become an essential part of people’s daily lives. However, the possibility of driving a vehicle traffic accidents occur at night or in low-light situations, and can account for about 27% of the total traffic accidents, and most of the time there will be personal harm. So 3w led grow driving at night must have good lighting.

2 car lamps.

Automotive lamps from the 1880s, the world’s first light auto lighting classic cars hanging gas lamps to the development of the first electric lights in 1912. Early automotive incandescent lamps, the lighting is dim, in the situation of the increasing number of vehicles and continuously improve the speed, incandescent can not meet the day-to-day needs of the lighting, car lights and the development of higher brightness tungsten halogen lamps high-intensity discharge lamps, brake lights, turn to a series of lights, rear fog lamp types, played a key role in order to avoid driving at night, when the rear-end or turn collided. Lighting technology with improved productivity is also gradually developed, including light-emitting diode technology (Light Emitting Diode LED High Bay Bulbs ), especially in automotive lamps automotive lamps. Automotive design in recent years, more and more use of LED 3w led grow lights, modeling is more and more elegant, and the combination of various lamps use more to lead the trend and direction of today’s automotive lighting development.

3 car rear combination lamps of basic theory.

3w led grow for new year

The cars in the process of driving, the rear combination lamp can be obvious characterization of the car driving, docked and the steering state, so that a variety of vehicle driver to make a more reliable adjustment, safe driving. Modern automobile rear lamps commonly used form of modular lighting the lights of the various functions in the same light body inside nice and easy car driver identification. General rear combination lamps, including brake lights, rear fog lamps, cornering lights, reversing lights, rear position lamps, these types of lights have their role, as follows:

The brake lights: the brake lights (brake lights) is mounted on the rear of the vehicle on both sides when driving the brake pedal is depressed, the brake lights that lit the red light to remind the vehicles behind Note, do not rear-end . Brake lights that go off when the brake pedal is released when the motorist.

Rear fog lamp: car rear fog lamp is low visibility in fog, snow, rain or dust diffuse environment, easy to find and installed in the rear of the vehicle to the rear of the vehicle to other road traffic participants, luminous intensity more than taillight large.

Turn lights: turn signal is open to vehicles and pedestrians around prompt attention to the important indicator in the motor 3w led grow vehicle steering.

Reversing lights: lighting behind the vehicle roads and warning other person using the road, the vehicle is reversing or about to lights, color is white.

Rear position lamps: commonly known as a small lamp, is mainly used to indicate the presence of the car and broad width, easy to make judgments of the other vehicles in the car will be and when overtaking.

 

led grow light fixtures in China

Ceiling lamps, as the name suggests, the lamps above installed horizontally at the bottom is completely attached to the roof on so called ceiling. Its ordinary white light bulbs, fluorescent lamps, high intensity discharge lamps, halogen light source. The most popular on the market is the LED ceiling and Power LED Flood Lights, gorgeous appearance the LED Ceiling adsorbed or embedded in the roof ceiling lighting, indoor main lighting equipment.

With home decoration heat continues to heat up, the ceiling lamps changes with each passing day, is no longer confined to the front of the single lamp, but to diversify development, drawing on both the luxury and style of the chandelier, ceiling installation avoid the defect the shorter room can not be installed large luxury lighting. To make a more comprehensive understanding of the ceiling lamps led grow light fixtures, today I gave you in detail about the ceiling lamp of knowledge, in order to design and optional ceiling lamps reference.

(A) ordinary ceiling lamps

led grow light fixtures in China

1 ceiling lamp shape
Ordinary ceiling lamp shape although there are many, but the most common is round or square, the complex is more variety of bizarre Crystal Ceiling.

2 lamp ceiling lamp
Most of its lamp T5 fluorescent bending, many different specifications, mainly in the following led grow light fixtures.

3 ceiling lamp power

Ceiling lamp power and not clearly defined, and its power is most commonly used for 10W, 16W, 21W, 28W, 32W, 38W, 40W.

(B) the problems and shortcomings of the ordinary Ceiling

Low luminous efficiency.

The entire ballast energy saving lamps lighting effects only 55lm /, the most high-power U type only 80lm / W. And because all of these Ceiling mostly used T5 lamp, bending into various shapes. However, regardless of the final bend into shape, it is 360 degrees luminescence, wherein upward 180 degrees of the light must be reflected back only into useful light, and this reflection process will lose a lot of light. So, later made into lamps light efficiency of at least want to make a 70% discount. Is the light efficiency but also multiplied by 0.7. And when in actual use, the luminance decay with time quickly. For example the tricolor lamp T5 YH32RR16 of a Philips 32W ring, the color temperature for 6500oK, its luminous efficiency to 67lm / W, the total number of lumens 2150lm, in fact, only 70% of the light can take advantage of. Is 1500lm.

2 containing mercury

The low boiling point of mercury, at room temperature, was evaporated. A waste discarded fluorescent lamps broken, immediately distributed to the surrounding mercury vapor, the moment the mercury concentration in the ambient air can be up to 10-20 mg / cubic meter, exceeding the national maximum allowable concentration of mercury in the air (0.01 mg / cubic 1000-2000 m) times the body once inhaled 2.5 grams of mercury vapor that is life-threatening. And high penetration of liquid mercury, into the ground immediately after they fell into the underground pollution of groundwater led grow light fixtures. 1 mg of mercury is enough to contaminate 5454.5 kg of drinking water, to make it up to meet the safety standards for drinking water. Now desperate to promote energy-saving lamps, it is really irresponsible to our children.

3 low life

Energy-saving lamps in accordance with the phosphor divided: the mixed powder, halogen powder, the three primary colors. The life of halogen powder; hybrid the powder life in 4000 to 6000 hours 3000 to 4000 hours; the tricolor known more than 8000 hours.

 

chinese led manufacturer in 2013

Clearly, LED has a very significant advantage in the energy efficiency and the working life. LED bulb requires only one third of the electricity consumption, can provide almost the same light emission amount with conventional incandescent and fluorescent lamps. Compared with the more mature technology-based products, the service life of the LED bulb is expected to more than 20 times higher. LED bulbs in the solid state components than the relatively fragile traditional lighting technology, provide better protection of mechanical damage. Together, these features provide attractive investment returns (ROI) for the users of LED lighting products, especially for maintenance and bulb replacement is more difficult and / or expensive commercial and industrial applications chinese led manufacturer.

In the past about 150 years, the lighting industry has developed into a large-scale production industry based on standardized bulb, lamp design has inherent outdated. Consumers find themselves often use the same new products to replace short-lived in the product. This trend with a small number of large manufacturers are inseparable, they are through to the hundreds of millions of low-cost manufacturing of a product to meet the needs of the market.

With the lighting industry’s transition to Power LED Flood Lights technology, whether this business model can continue to maintain their best interests? And whether it is able to take advantage of the basic advantages of solid-state lighting chinese led manufacturer?

 


chinese led manufacturer in 2013

May be associated with a longer working life of the technology is equally important, the greater efficiency and a more solid design is the LED having architectural flexibility. For example, the lighting designer can select a point light source LED lights to make it around a shape distribution, rather than the light source together diffuser and mask will be distributed to where it is needed. These features give lighting designers unlimited freedom of design, innovative way to design the light source. Product developers LED lighting products can be made ​​into any shape, or lighting embedded in building materials, walls or furniture. They can be more accurate directional light source, or more easily control its intensity or color, to create a dynamic lighting environment. Some manufacturers have developed a windows prototype, which is transparent in the daytime and by clever use of the material of the LED chinese led manufacturer, and different refractive indices, which will emit light at night.

 

 

To do appropriate measures and the development trend for led industry

At present, traditional lighting still occupy absolute market share advantages. LED lighting market penetration is still very low, the latest information indicates that the LED lighting market penetration is only about 7%. The reasons are mainly the following:

To do appropriate measures and the development trend for led industry

1. The high price of LED lamps.

2. promotion lag.

3. Retail Distribution does not put in good force.

At this stage, led industry lighting companies should not only focus on application-oriented product development, but also pay attention to brand building. At present, most LED lighting companies play the “green energy”, “low attenuation”, “long life” concept, but it has not be acceptable to the majority of consumers. The market are flooded with cheap inferior products, which seriously affect brand of LED lighting credibility.

Businesses want to do appropriate measure.

2012 was a reshuffle year for terminal dealers, “the strong get stronger and the weak are eliminated,” the general trend is hard to change. Can I get through in this winter? and it depends on the financial strength of the business and the business model of the lamps. On the circumstances that the country’s major flow decrease each year, if the business still wait for the client to send home, it is undoubtedly the worst response. While for the led industry lighting companies, they are also facing the problem. The pipeline provider can not be found in the terminal. At present, many LED Tunnel Light companies have chosen to open outlets. Such as shellfish crystal semiconductor lighting in Shenzhen Parc Oasis Lighting City opened factory outlets directly.

LED pipeline construction trends

How to blaze a way out when one enterprise does not form the industry standard, and in a full of the cohabitation quality LED market? Quality is the key to victory, and also product reputation and brand symbol, and LED terminal market in the next competition will be the brand competition .

1, the development of led industry store.

2, on the Major Lamps City or city building stores sell lamps as a trial. Or operated in cooperation with local core dealer, but in the short term the mode of promotion efforts should not be too great.

3, part of the LED lighting business cooperate with the well-known brand  and well-known brand of Direct stores Distribution.

supernova led grow lights inhibition of urban crime

The American Austin City Police Department and Austin Energy Energy Board cooperation to protect the residents of the city. Since a significant increase in violent crime rate in mid-2011, the two institutions plan fitted with LED lighting, the prevention of crime in the U.S. city of Austin, the three most dangerous locations. supernova led grow lights are normally used in these kinds of projects.

Austin Energy spokesman Carlos Cordova, announced that a well-lit place is usually not an offense has been committed, because when you want to do bad things and nobody seen.

In accordance with the requirements of the city’s Police Department, Austin Energy erected 25 LED lights. The new LED bulb illumination is brighter than the old bulbs. Cordova said good lighting environment, people can be assured of recreational activities, no need to worry about security issues.

supernova led grow lights are also some kinds of inhibition of urban crime.

supernova led grow lights inhibition of urban crime

Austin, 8 and 9 of the street lighting test results are very successful, this lighting project is one of a series of policies against urban crime. The growth of violent crime by 15 percent from 2011 to January 2012, July, violent crime only grow by 7.8% next city a larger project, 70,000 lamps will be updated by Austin Energy budget expenditures.

It is reported that this new LED lighting products to reduce the crime rate, the earlier countries into Japan, called LED guard against light, has been gradually applied in street alleys to replace fluorescent lamps mainly traditional street lights. supernova led grow lights are also one of the important models for the modern cities to show the updated technology. Also, you could find led flood lights in these big cities, for example, in Shanghai, China, thousands of LED Flood Lights are installed in different applications, projects.

In addition, studies have pointed out that the blue light, that people can more calm, and some of the LED light will also guard against taking blue, white separate configuration. Based on the technology now, using LED is saving more money and better maintence cost, also, the life span of led products would be about 50,000 hours, much longer than any other lighting products.