Night landscape planning and design needs

City squares, streets, commercial areas, residential areas of the detailed planning of the night landscape is designed on the premise sites.Associate Professor Zong money that a scenic area has its unique attributes, led spotlight,features, focus and buildings, facilities, environment, cultural landscape elements. Therefore, one of the attractions of the design, first of all to conform to these characteristics, and thus established to create the atmosphere; to create a character based on features, according to priorities established theme, and the relationship between the various elements identified with King, King and other end to create a whole effect. On this point is concerned, Wenchang Square Night landscape business there is a big regret.

On the one hand, “Golden Eagle” high quality design and rich colors of the night’s business climate, and its opposite Wanjiafu Mall commercial Solar Energy Lamp echoes; other hand, the center of the square southeast of Wenchang Pavilion and Plaza, Northeast building, from the facade to the top of the square are not from a commercial point of view together to create a whole echoes the environment, but isolated from the square outside, it is seriously dull.

Second, the use of light, by changing the building color, texture, volume, shape and other means, so that day does not look the United States, not to achieve a harmonious combination of architecture and co-ordination, exciting, thereby creating features. In recent years, a number of units in this regard Yangzhou also made some attempts, but the effect is not satisfactory, the problem lies in the principles of design and lighting do not quite understand. Such as the use of contour Crochet way, the square box building or buildings in the night of further hard, is also used red, green and blue color LED Tube Light source, the results of these buildings look dull, vulgar, lower-grade .

The importance of LED driver chip

Although anodized, its corrosion resistance greatly improved, but still no guarantee that the installation, lighting the oxide film is not destroyed, when the oxide film damage, the chemical properties of active aluminum can be proved. In some larger areas prone to pollution, acid rain, acidic water will accumulate in the body of some cracks and storm water after evaporation of the acidic groove, slot or will corrode the lamp body, the body of corrosion not only affects the appearance of light , heat, and will also affect the mechanical properties. In addition, the “naked” type lights, LED Tube Light itself, the structural characteristics, it is likely to result in the accumulation of dust and snow. Dust cover on the thermal performance aluminum radiator will be substantially reduced, and the snow on the surface, it seems more conducive to heat, but in fact, cold weather is enough to heat lamps, a lot of snow, but it will impose pressure poles.

Senior Marketing Communications Manager Xise PI Savage said: “Design the most cost-effective first step in LED driver should choose the most suitable topology.” Securities, a single-stage PFC and CC IC LED chip to provide power supply, eliminating the switching converter and the input needs of a large capacitor, and switching MOSFET, drive and control circuitry onto a package, can greatly reduce the number of external components, and provide more protection features (such as overcurrent protection and accurate thermal protection). This will ensure that not only meet the challenging cost targets, while significantly extending product life. Today, many solutions, using the traditional two-stage approach – step-down converters and boost PFC plus CC to drive the LED Tube Light. These designs at 50 ° C ambient temperature performance is satisfactory, but the temperature inside the bulb, they will face great pressure.

LED light module with Notes

It is noteworthy that, in the process of using the led tube module, the voltage drop must pay attention to the problem. Do not only do a loop, from the first series to end. This will not only end to the voltage difference between the brightness caused by inconsistent, there will be a single circuit board burned over current issues. The correct approach is as much as some in parallel circuit to ensure a reasonable distribution of voltage and current. In addition, the internal cavity for the use of the word anti-corrosion materials, preferably with white primer, to increase its reflection coefficient.

LED signs in the application of ultra-thin ultra-thin Solar Energy Lamp signs are in place to improve the utilization of business on the basis of shape. The past, thin light-emitting signs and light boxes thin thickness between roughly 1.5-3.0cm. In 2004, Nanjing Shakespeare Company on this basis, independently developed a set of 0.8-1.5cm in thickness between the thin plate. The product uses a light guide, injection molding, carving, backlight and other technologies. Characterized by surface smooth, without sculpture bump marks, even without light string light. Unlimited pages bigger, small licensing department, to make highway signs indicate both.

Such ultra-thin LED signs in the choice, the thickness according to customer requirements to select the size and layout. Thickness 8mm below the area of 450cm2 these ultra-thin LED Tube Light signs, the choice of SMD LED module; thickness 8mm-10mm between the area of 500cm2-400cm2 between the thin light-emitting signs, LED pixel control module can be ; thickness of 10mm or more in a large ultra-thin LED signs should be used in light-emitting angle of 30 degrees or less in the ultra-bright LED module.

LED dispensing and packaging

LED dispensing: TOP-LED and Side-LED suitable dispensing package. Manual dispensing package to the operational level requires very high (especially white led tube, the main difficulty is the dispensing of control, because the epoxy will thicken during use. White LED phosphor dispensing there is a light color of the precipitate cause problems.

LED curing and after curing: curing is the curing of epoxy encapsulation, epoxy curing conditions, generally in 135 , 1 hour. Molded package is generally 150, 4 minutes. After the cure is to allow full curing epoxy, while the LED thermal aging. After curing epoxy for improved stent (PCB) of the bonding strength is very important. General conditions of 120 鈩�, 4 hours.

Solar Energy Lamp package using potting form. Casting process is the first in the LED into the liquid epoxy molding cavity, and then insert LED stent good bonding, into the oven for epoxy curing, the LED is from the cavity in the extrusion molding.

LED molded package: the good bonding LED support into the mold, the mold with the upper and lower two hydraulic clamping and vacuum, the solid epoxy glue injection into the entrance channel with a hydraulic plunger pressed into the heated mold plastic Road , epoxy glue along the road into the slot of each LED Tube Light molding and curing.

LED Tube Light

Winter to the industry is a sweeping proposition, LED Tube current in the spring, not winter, not to micro and small enterprises, represented as a standard to measure the LED industry, the season, after all, have the ability to have real technology companies, faced with LED applications, a huge market, there is still a huge space beings, these enterprises in the spring is just beginning.

LED industry is facing temporary difficulties with the U.S. financial crisis and debt crisis in Europe caused by the external environment, the poor, with the national macro-control policy, and rising raw material and labor costs, RMB appreciation and so on, but I believe that the failure of a business can not blame the external environment, because the external environment, competition is the same case at the state fair, so the final analysis, caused by internal factors.

An industry also believes that the current points-based LED Tube Light loss, in addition to the impact of regulation by real estate, there are three reasons: First, the current upstream industry chain is not cutting-edge technology in their own hands, resulting in high production costs and sales costs are high, so do not make money. The second is the people’s deep understanding of the LED, and the homogenization of the product too, nothing new, both to aid in the form of dealers to sell. 3 is not a good marketing policy into the market, largely in low-end market price, the direct collision of the enemy 1000 injury self-harm 800 is too expensive. Fourth, there is no industry standard, I heard that LED to make money, and no one to point a, have been diverted.

LED Bulb glow with the traditional lighting works differently, it has a point light source, high brightness, narrow beam output and so on. Manufacture LED lamps first thing to consider is to take full advantage of the limited flux limited exposure range, the core of conventional lighting technology with light, the real technical content or in the light of the light distribution, street lighting and tunnel lighting has proven the case this point, the LED light source with a new type of lighting designers made ​​a higher demand. Inspired by the sentiment of human life, innovation comes from the technical personnel, companies should pay attention to human resources, so people-oriented.

The price of LED Tube Light

Temperature in the LED Tube Light section, the most effective means is to design a high thermal performance of the LED package, which is China’s LED industry in the near future be able to make significant progress on LED intellectual property one of the direction, the LED is a low-voltage electronic products, electrical safety requirements in a more relaxed, so the thermal conductivity of the substrate material can be used more, and we study this industry is small, resulting in repeated breach of foreign intellectual property disputes.

Improve the stability of the phosphor, is the mainstream of white LED technology, in this regard our current technology is relatively weak, short-term progress can not be exceeded for the majority of enterprises to seek a breakthrough in this area is difficult.

Color compensation technology is to compensate for the lack of color LED Strip Light color rendering index caused a reduction techniques, this technology is feasible from the principle of speaking, but in practice, faced with mixed light conditions the strict constraints of technology , so the practical value is not high.

3:6:1 RGB white line based on the mixing theory, this theory is based on our look at bright objects on the basis of this mixing technique can be successfully applied in white LED display technology, but application in the lighting program on the program this mixing is not much reference on the nature, this is because the human eye to visible light has a characteristic and average characteristics of a habit, and these two characteristics, which we unconsciously damage the eyesight of the important reasons.

Because according to the nature of lighting and clear, light on the object, the object into the eye through the reflection, so as to form a lighting process, as objects of various wavelengths of light absorption is different, so solid red, green and blue color Led Tube 3:6:1 mix through out the white light technology, itself, there are some color defects, exposure to the surface, because the red, green and blue are absorbed by different surfaces, different reflections, resulting in the reduction of CRI . Therefore, a three-color mixing technology and the production of white products, the surface should be in the components or the use of technical means within the product mix of light, so that a white light, rather than sending the light of three different objects in the illuminated surface mixing, the resulting lower CRI.

Red, green and blue color LED color mixing technology is a more mature white lighting technology, this technology because the distance between the different LED light mixing caused by the larger distance, mixed with the LED front mask, although the solution of the mixed light problem, but the light loss is an obstacle for the development of lighting in the formation toward the light barrier. Another person when direct lighting is not even watching the white; these two factors directly restricts the development of this technology.

Mixing of the three color LED technology, which is based on research to solve these two problems and proceed. Found that with decreasing distance between the LED chip from the mixed light decreases exponentially with trichromatic color powder coated surface concentration increases exponentially mixing effect is also enhanced in-depth study to start Three-color LED chip spacing decreased and concentration increased three-color look for an optimal balance between the point is a solution to the three primary colors of light mixed with the best programs, which make the tricolor white LED as a light source as possible.

At present, China is in the LED packaging industry, though a big country, but far behind in innovation and technology, mixing three primary colors red, green and blue light technology, to borrow the phosphor coated white LED technology, can achieve the perfect white effect.

LED Spotlight

According to statistics, in 2010 LED Flood Light the global packaging industry sales reached $ 12.8 billion, with Japan the largest share, about 27%. Led the industry from global competition in the market point of view: After decades of development, the global industry led the formation of the United States, Europe, Asia, the three pillars of competition. The main producers are: cree, hp, Siemens, Osram, Nichia, Toyoda Gosei, Seoul Semiconductor, Samsung, Epistar and so on.

LED Spotlight is a low-voltage cold-dot semiconductor light source, complete this sentence summarizes the characteristics of LED, and in our product development applications, which is characterized by endless, we are pursuing is the traditional light source, the required goals, which kinds of consciousness no matter right or wrong, but it is fit to the application of LED will have a certain degree of difficulty, the present situation of the integration LED light source, high voltage LED light source, I think this is the stage of product development to a certain level of semiconductor technology, cooling technology reach a certain level, I think that out of the two technologies is inevitable.

LED Tube Light fatal drawback is that heat accumulated effect, within the 3 mm2 lost more than half-watt power to generate heat (since 1 watt LED electro-optical conversion rate of less than 50%), while the integrated LED exacerbated this effect more so, even carrying a heavy thermal shell, can not completely solve the LED heat dissipation effect. LED is a point light source, so we source the design basis should be established on the basis of point light sources, on the basis of improved heat and light type of problem, our engineers are currently facing the most critical issues.

Other LED application product development as the development will still go through a tortuous process, this process is undeniable that the technology will have a short-lived (like the Chinese CVD), for experienced engineers in terms of what we have to grasp LED technology is the mainstream, great direction must not change.

white LED Panel

With the LED Tube Light performance continued to improve, the application also will rapidly expand the market, hidden reason behind the use of GaN, AllnGaP high-brightness light-emitting materials, LED, has a long life, energy saving, shock, low voltage drive and other outstanding characteristics, and beyond the light bulbs and halogen, and high luminous efficiency of LED is gradually in recent years been developed, therefore, the future development of high-brightness LED market, will be more rapid and extensive growth.

The most obvious of which is the penetration rate of white LED Panel , 90 late in the context of a more eco-friendly look forward to being the market, but also stimulated the rapid development of industry-related technology. For now, the main applications include white LED LCD backlight mobile phones and car interior lighting, which alone accounted for the LED market has about 25% of overall sales.

The other part of lighting applications, is in a fledgling state. General building lighting, often accounting for 20% of the electricity consumed in Japan, more than 1,000 per year 90 billion kWh. So for the next generation of energy-saving light sources expect quite large, but unfortunately so far, white LED Panel also can be used in only a very small range. Because, like a small 5mm white LED, not like a light bulb or fluorescent light, as only one can get the amount of light required for use of the environment. So if you want to step into the LED architectural lighting, the overall need for greater technical breakthrough is the job.

The basic structure of high-brightness white LED

There are basically two ways white LED. One is the multi-chip type is a single chip type. The former is the red, green and blue LED Flood Light packages together, but also to produce white light, which is the blue or violet, UV LED as light source, with the use of phosphors in white light. The former, it is necessary to combine all the characteristics of LED, the drive circuit is more complex, the latter type, then a single chip, LED only one species, circuit design easier. Further divided into two single-chip-type, one is the light source using blue LED, the other is the use of near-ultraviolet and ultraviolet light. Now, the white LED on the market are mostly blue LED with YAG phosphor.

LED Tube Light industry

From January to July this year, LED Tube Light industry, new investment of more than 100 billion yuan.Traditional lights are far less price competitive

Despite the huge investment, but in view of technical problems, that entry is actually about 70% of companies engaged in the downstream packaging and application services, and the two parts of the total profit of about 10% to 20% of the upstream and middle reaches of the wafer and chip business profits up to 70%. Industry sources say that the high-end chips, and now more than 80% from Taiwan or overseas, the core technology at this stage is still mainly concentrated in Japan and U.S. companies.

LED Underground Light account for 40% to 60% of the cost of the chip, the high cost of raw materials and technology, leading to the loss of price competitiveness, the main reason for not successfully enter millions of households. Power than traditional incandescent light LED 5 to 9 times, the cost of traditional lamps are often more than twice the price of natural high. It is understood, however, in recent years, the price of the chip at an annual rate of decline of about 20%. In addition, the company has recently developed a technology that will reduce the cost of nearly Qicheng LED chip, and another company successfully reduced the price of an ordinary LED lamp energy saving lamp level.

In addition to technical improvements, conducive to the development of policy in the “five” plan to promote the next in succession. At present, Dongguan, Huizhou, Foshan, Shenzhen, Dalian, Xiamen, Nanchang, and the development of relevant industries in succession planning. Market rumors, LED industry standards and subsidies is expected by the end of the introduction.Five non-standard inferior products into products

Some analysts pointed out that the standard in the industry before the inevitable problems are not introduced, the various manufacturers of LED products is different specifications and different ways, reportedly 50% of products on the market there is no standard inferior product.

Therefore, the market began to question the led wall light industry has a bubble of excess capacity began. Experts point out that, LED is the trend will continue, but at this stage LED industry is not mature, real LED lighting market is not started. Local governments have committed to LED lights as a breakthrough, pull the entire industry, focused on the current LED landscape lighting, tunnel lights, street lamps and other lighting products.

THE PRICE ABOUT LED Bulb

In my mind, led wall light source with the current traditional very different, but we in the application of LED as a light source when the light is always in the old tradition to go, because we used to have the shackles of our innovative LED light source .

I can not say that he is a qualified expert of LED, but I do for most of the LED and some experts on a certain level of awareness is not high, because when they evaluate LED products are always standing tradition angle of the light source to evaluate the LED light source, so I think they are a qualified from the LED brick home.

LED Tube Light is a low-voltage cold-dot semiconductor light source, complete this sentence summarizes the characteristics of LED, and in our product development applications, which is characterized by endless, we are pursuing is the traditional light source, the required goals, which kinds of consciousness no matter right or wrong, but it is fit to the application of LED will have a certain degree of difficulty, the present situation of the integration LED light source, high voltage LED light source, I think this is the stage of product development to a certain level of semiconductor technology, cooling technology reach a certain level, I think that out of the two technologies is inevitable.

LED fatal drawback is that heat accumulated effect, within the 3 mm2 lost more than half-watt power to generate heat (since 1 watt LED electro-optical conversion rate of less than 50%), while the integrated LED exacerbated this effect more so, Even carrying a heavy thermal shell, can not completely solve the LED heat dissipation effect. LED is a point light source, so we source the design basis should be established on the basis of point light sources, on the basis of improved heat and light type of problem, our engineers are currently facing the most critical issues.

Other LED application product development as the development will still go through a tortuous process, this process is undeniable that the technology will have a short-lived (like the Chinese CVD), for experienced engineers in terms of what we have to grasp LED technology is the mainstream, great direction must not change.

I do not think the design is the LED Bulb currently on the market in this way, we can use thermal, optical principles to a consideration of the current section of the technology, learn from the optical hot, mostly not, the biggest problem is that current technology does not for standardization mode, so there is still much room for innovation.

Spoke of standardization, I would say we are counting on other people in a benchmark, our efforts this talent, this is not the correct view, the standard will give you hope and do not bring much benefit, because the standard rules of the game , you can not afford to participate in the formulation of rules of the game, not even think about how much from the rules of the game to enjoy the benefits, so the standards and specifications that are restricting someone else’s, for terms of an engineer should develop a standard to regulate their own first, and then disseminate restrict other people, you are the first “drive.” Standards is a slow process, so you should standardize their products, standardized product design processes, production processes, test specifications, and even the packaging, instructions, you can not do this, hope someone gives you a specification, you can do it?