日期：2013年5月23日

how to make led lights at home

A core problem: Cooling
I studied a high-power light source packaging manufacturers to provide integrated module light source efficiency issues, 20w-200w modules of different power chips used are the same, but the 20W light module efficiency of up to 94lm / w (hot luminous efficiency), 50W module light efficiency 82lm / w (hot), 100W light module efficiency of up to 70lm / w (thermo-optical effect) 200W modular light efficiency up to 57lm / w (hot), This is actually the heat at work, I tested the same module, in a good heat dissipation premise, 20W light module efficiency of up to 105lm / w (luminescence efficiency), that is, if the words of a very good thermal design , then the light 200W module efficiency of up to 105lm / w, then made into Class B energy efficiency (90lm / w) of the cost of LED lighting should be in 12RMB / w or less, how much money you want to sell a tile, to see the degree of users happy. What kind of technology used to achieve the desired cooling effect so,  how to make led lights at home I suggest you go to look carefully, but the cost is not high, to be meaningful, then the energy

Second: the most intractable problems: miniaturization
As we all know, a few years ago Statistics data show that the total number of street lights nationwide Dayong month 24 million, this figure is now 30 million, roughly the number of lights and tunnel lights rather because 1km tunnel average number of lamps roughly equivalent to an average of 10km road number of lights, this figure does not matter whether the Right, I want to say yes, so many lights are replaced with LED lamps, light aluminum can not afford this one is an astronomical figure, just press a Light 10KG calculations, so long is about 60 million tons, why can not i run such high pressure sodium twisting down, the LED lights put on go? This is a small problem, provided that: even better heat dissipation, energy saving targets can not fall, how you give it a try.
3 is not a problem of the problem: drive power how to make led lights at home 

how to make led lights at home

Drive power from the development perspective, efficiency and reliability have been quite good, why is it as a problem. Yes, its price is a problem. From now on the market power look, better performance, about the price of 3 yuan / w, of course, there are 2-3 million / w of, the price is about the price of light 1/2 is weak, the LED lighting become the second largest cost factor, if you use non-isolated house, the cost is down, but they could not pass safety regulations, we can not go to their own R & D and production of power, right? This is too embarrassing. Has introduced an AC-driven LED light source, a friend told me that the life of this light source is not, it is best not to consider. I have not tested this LED light source, so we can not make improper comments.
4 additional problem: continuous dimming
how to make led lights at home is a very easy-going guy, you can empty, you can also insisted on driving the current size is not critical, to eat as much current how much light on the hair, which longevity of the LED dimming control requirements. This feature adds is good, can make people more lazy, energy indicators can also improve a little, but adds this feature, the system’s reliability declined, increased cost, the owners have on the one hand shouting lamps prices too high, on the other hand have to increase the function of automatic continuous dimming, really hard life, people do LED harder, do LED good difficult.

 

led moving light in the stage application

LED Strip depends on the quality and attitude of manufacturers have equipment capacity. To produce high quality LED flexible strip must be to improve the management methods and reliable to do to ensure incoming inspection process, using high-precision positioning of the LED SMD placement machine, and then through the wave soldering, welding can be carried out after a good PCB test separator, connecting, testing, aging, plastic closures, aging, packaging and finished products. Step will affect every aspect of LED flexible strip performance and stability, workshop-style hand soldering and packaging out of the soft light strip is not in the anti-static workshop with precision LED SMT package with clean out high quality LED flexible strip of the same led moving light language.

One, LED lights Chip
Is a set of LED industry chain, which is in the upper reaches of the chip wafer cutting and production, which is currently the LED industry’s most technical content of a link. Epitaxial wafers mainly from Japan, Korea, Germany provided, mainland enterprises in Taiwan chip, its epitaxial wafers mainly from Japan and South Korea, the brightness, the light fades is best made in Japan, Taiwan, Guang Jia, the United States and other epitaxial Puri tablets from Japan, which provides chip reputation in the industry are better. Currently, Japan provide external epitaxial crystal factory outside except that it has to start their own cutting, which are bound to Taiwan and the mainland fab pressure. Part of the package, mainly in Taiwan and mainland China, including Taiwan enterprises in the package is a world leader appeared Everlight, Bai Hong, East Bay, a large number of high-quality corporate CMO. After the year 2000 with the blue chips and white craft after another, as well as mobile phones, backlight, lighting and other applications market expansion, ushered in the industrial packaging companies in Taiwan spring.

    Second, LED light package
To encapsulate the form, from the initial line 3MM, 5MM, 8MM, 10MM, piranhas. SMD 0805,0603,1206 later development, and now the 1210 (3528), 5050, etc. TOPLED series. So LED strip is developed from the common line to 0805 and 0603,1206, and now the market is the most fiery 5050 series products. It is noteworthy that the brightness of led moving light has a direct correlation with the wafer. Currently chip package has 9MIL, 12MIL, 14MIL and other dimensions, in theory the larger wafers, higher power and brightness, of course, the price is more expensive, the current market many companies employ 5,050 package appearance, but actually using the brightness relatively low small chip, thus resulting in low prices, but the quality is not good, this is the customer irresponsible. When used to carefully identify lamp beads and brightness of the welding process, during which different instruments can be quickly identified.

    Three, LED light bar package
LED light bar is divided Flexible LED strips and LED light bar two, the differences are as follows:

    1, Flexible LED Strip is done using FPC circuit board assembly to be assembled with SMD LED, the thickness of the product is only a 1MM thickness, does not occupy space; common specifications per meter 30 lights, 48 ​​lights, 60 lights, Different users have different specifications. And it can cut, it can be any extension of luminous unaffected. FPC material is soft and can be bent, folded, winding, can freely move in three-dimensional space and stretch without breaking. Suitable for irregular local and cramped places, but also because you can arbitrarily curved and winding, suitable for use in advertising in any combination of a variety of decorative patterns. FPC itself is worthy of prompt material is also a variety of points, with the formal market above is made of rolled copper dual panel FPC, of ​​course, many enterprises are also blind pursuit of material costs down, take electrolyte made of FPC, FPC electrolyte easy to peel off during welding, Weld, and a direct result of the phenomenon of dead lights, in addition to whether it is from the electrolyte conductivity and flexibility are unable to compete with the rolled copper.

led moving light in the stage application
2, led moving light bar is made with hard board PCB circuit board assembly, LED SMD LED useful to be assembled, but also useful for assembly-line LED, depending on the different needs of different components. The advantage of rigid strip is relatively easy to fix, processing and installation are relatively easy; shortcomings can not be bent, not suitable for irregular areas. Rigid Strip with SMD LED per meter 30 lights, 48 ​​lights 60 lights, a good variety of specifications; using DIP LED’s are 18, 24, 36, 48 different specifications, there is also a positive side, the side also known as the Great Wall lights glowing.

led light prices in 2013

From the large side, LED bulbs necrosis of the reasons is nothing less than the following two:
First, the leakage current of the LED is too large resulting in failure of the PN junction, the LED light does not shine, this case will not affect the work of other LED lights;
Second, the internal connection to the LED lamp lead is disconnected, causing the LED current through the dead light, this situation will affect the normal work of other LED lights, is due to the low operating voltage of the led light prices (red, yellow, orange LED operating voltage 1.8V-2.2V, blue, green and white LED Operating Voltage 2.8-3.2V), are generally required in series or parallel connection, to adapt to different working voltage, the more the greater the impact of the series of LED lights, which has an LED lights internal wiring open circuit, will result in the series circuit of a whole string of LED does not light, this case can be seen to be more serious than the first case. The dead LED lights that affect product quality, reliability of the key, how to reduce and eliminate the dead lights, improve product quality and reliability, packaging, application companies need to address the key issues. The following are some of the reasons for dead lights Some analysts explore. Next on the detailed interpretation:

 

led light prices in 2013

Electrostatic damage to the LED chip, led light prices chip of the PN junction failure, leakage current increases, becomes a resistor electrostatic hazards greatly around the world because countless electrostatic damage electronic components, resulting in tens of millions of dollars economic losses. To prevent electrostatic damage to electronic components, the electronics industry is a very important work, the LED package enterprise applications do not take it lightly. A part of any problems, will cause damage to the led light prices , the LED performance deterioration or even failure. We know that the human body static electricity (ESD) can reach about 3 kV, enough damage to the LED chip breakdown in LED packaging production line, the grounding resistance meets the requirements of various types of equipment, which is very important, general requirements for the grounding resistance ohms, even some high occasions the grounding resistance ≤ 2 ohms. These requirements are familiar to the people of the electronics industry, the key is in the actual implementation is in place, whether recorded. It is understood that a general private enterprises, anti-static measures has not been in place, this is the most businesses can not find out the grounding resistance test records, even if the ground resistance testing once a year or a few years time, or there is a problem check the grounding resistance, not knowing that the testing of ground resistance This is a very important work, at least four times a year (quarterly test), some of the requirements of a high place, a month will have to use a grounding resistance test. Soil resistivity changes with the seasons, spring and summer days of rain, the soil wet ground resistance is easier to achieve, autumn and winter dry soil moisture, grounding resistance is likely to exceed the specified value, the record in order to preserve the original information, do to future well documented. In line with the ISO2000 quality control system.

 

Old house renovation stimulating demand for led lighting effects

In order to further curb housing prices, crack down on property speculation action. On the night of March 1, the State Council officially announced the five countries “implementation details of the real estate regulation.

Be worry about the implementation of the five countries “to bring the rising cost of housing resale, the second-hand housing market first react. A lot of second-hand housing homeowners who are eager to cash out the hands of properties for sale. According to the Shenzhen Centaline the monitoring, the week of February 25-March 1, the Shenzhen second-hand housing turnover increased by 40%, 1517 sets of transactions, closing an area of ​​123,000 square meters.

Old house renovation stimulating demand for led lighting effects

Old house renovation stimulating demand for LED

The report said GLII 2012 mainland China LED indoor lighting production value is 335 billion yuan, an increase of 80%, but the growth points mainly from the field of business according to the home lighting market potential yet to be developed. Despite the lack of knowledge of the ordinary consumers of LED lighting, but in recent years, LED frequent media exposure, coupled with the declining market for LED technology touted and product prices, consumer’s led lighting effects tentative purchase psychology even more strongly.

The survey shows that 80% of families Lighting purchase is accounting for more than 10% of the total cost of renovation of the housing, in which a small number of household lighting consumpt of 3,000 yuan, most of the family is as high as 5,000 yuan.

In addition, along with the improvement of second-hand housing renovation upgrading, compared to traditional lighting highlights, the technical highlights in LED help housing interior upgrade innovation.

Improvement of second-hand housing decoration demand for LED lighting is a very good opportunity to led lighting effects. Upgrading from the original traditional home lighting to meet the psychological needs of the housing. An interior designer said, local second-hand housing tends to upgrade local decorate, with relatively little cost, so the homeowners are easy to accept.

But others took a different view. Xu Liang in Yazhi decorated told reporters: at present, the second-hand housing market is so popular, to a large extent, the seller just want to avoid the 20% transaction tax.