The application of high -power LED lighting equipment is becoming wider and wider, and the luminous brightness of high -power LED is actually proportional to its current, and the forward current of high -power LED will also change with the temperature changes. Today, I will take everyone to learn about the reason for LED knot temperature and LED semiconductor lighting source heat dissipation method. In recent decades of development, LED lighting efficiency has become higher and higher, the cost is getting less and less, and the colors have become richer and richer. This makes high -power LEDs as an efficient, energy -saving, environmentally friendly, and safe cleaning source in the near future. However, the heat dissipation problem of high -power LED lights is still a major development bottleneck in its application in the field of lighting. It is an important reason to restrict its new generation of lighting sources. Research data show that when the LED chip has a luminous light when the knot temperature of the LED chip is 25 C, then when the knot temperature rises to 60 C, its luminous amount will only be 90%; when the knot temperature reaches 100 C, it will drop to 80%. ; 140 C is only 70%. It can be seen that improving heat dissipation control knot temperature is very important for improving its luminous efficiency. If the heat dissipation problem of high -power LED lights is not resolved, the working temperature of LED lights will increase and the knot temperature will increase, which will cause the LED chroma to be offset, the color rendering index decreases, the color temperature increases, the light emitting efficiency decreases, and the service life will be shortened. The luminous brightness of high -power LED is actually proportional to its current. If the output optical flux of the high -power LED is controlled, it is equivalent to controlling its luminous brightness. The positive current of high -power LEDs will also change with the temperature. When the temperature of the environment exceeds a certain value (we call the safety temperature), the forward current of the LED will be reduced suddenly. At this time, if the current continues Increasing, it will cause LED life to reduce. Therefore, at this time, corresponding measures must be made. When the bubble lamp input current and the surrounding temperature are changed, the high -power LED positive current can be controlled in time. Use temperature compensation technology to dynamically adjust the output current according to the ambient temperature, and monitor the temperature of the LED in real time, so that the high -power LED at high temperature conditions will automatically reduce its current. 1. The current status of high-power LED lighting products "chip-aluminum substrate-the three-layer structure mode of the radiator" is used by most large-power LED lighting fixtures on the current market, that is, first packaging chip on aluminum substrates to form an LED light source module, and then Then install the light source module on the radiator so that you can make a high -power LED lighting fixture. At present, the early use of LEDs to display lights and indicators is used as a thermal management system for high -power LEDs. This thermal management mode is limited to small -power LED use. The high -power LED lighting prepared by the three -layer structure mode, there are still many unreasonable places in terms of system structure, such as high knot temperature, low heat dissipation efficiency, more contact thermal resistance between structures, lower heat dissipation efficiency, more contact thermal resistance As a result, the heat released by the chip cannot be effectively dispersed and exported, resulting in LED lighting fading, low light effect, and short life. Due to the limitations of many factors such as structure, cost, and power consumption, high -power LED lighting is difficult to adopt an active heat dissipation mechanism, and can only adopt a passive heat dissipation mechanism, but passive heat dissipation has great limitations; and the current energy conversion efficiency of LEDs is still effective Not high, about 70 % of the input power can be converted to heat, even if the light effect is increased by 40 %, the energy is converted into heat, that is, it is difficult to increase the degree of heat dissipation without considering heat dissipation. 2. The characteristics of LED lighting light sources are different from traditional fluorescent lamps, incandescent lamps, and halogen lamps. LED semiconductor lighting light sources are made of semiconductor material and consisting of PN. Electronics-grounded acupoints generate visible light through composite, PN positive guidance Tong, reverse cut off, of which N area corresponds to the negative electrode, and the P area corresponds to the positive pole. The LED semiconductor light sources have the advantages of high light emitting efficiency, short response time, small volume, energy saving and other advantages. In addition, it also has the characteristics of traditional lighting sources: 2.1 has the characteristics of similar PN semiconductor devices: 1) The positive current and forward voltage are negative temperature coefficients, which are reduced as the temperature increases; 2) Positive voltage voltage It must exceed a certain threshold to generate current; 3) When reverse, no current will not work. 2.2 There are many aspects to restrict its working temperature. The specifics are as follows: 1) The brightness of the LED and the positive current present a certain curve relationship. When the knot temperature exceeds a certain value, the brightness weakens with the decrease in the current to the current; 2 ) You must limit the knot temperature to below the rated value 95 C to 125 C; 3) If the surface contains plastic lenses, it will be limited by the melting point temperature of the lens material. 3. Introduction to LED knot temperature 3.1 The cause of the LED fever generated by the LED fever is because the energy added is not all transformed in the form of light energy, and some of them have been converted into thermal energy. At present, the light efficiency of the LED on the market is about 100 LM/W. In other words, about 70%of the electric energy is wasted in the form of thermal energy. Generally speaking, there are two factors that lead to the production of LED knot temperature. Specific as follows: 1) Internal quantum efficiency. When the acupuncture and electronic composite are compounded, they cannot all produce photons. This is usually called "current leakage", which is the reason why the compound rate of loading of the PN zone is reduced. The voltage of the leaked voltage and the current is the dispersion power of this part, that is, the transformation into thermal energy, but this part is not the main component, because the current technology can make the internal photon efficiency of LED close to 90%. 2) About 30%of external quantum efficiency. One of the main reasons is that the photons generated by the loadmons cannot be transformed into the outside of the chip but converted into heat. Although incandescent lamps are only about 15LM/W, but in the end, it radiates electrical energy in the form of light energy. Although most of the radiation energy is infrared and the light effect is very low, this is exempted from the problem of heat dissipation. The heat dissipation problem of LED has gradually become the focus of people's attention. This is because the life of LED or light decay is directly related to its knot temperature. If the heat dissipation problem is not handled well. 3.2 Methods to reduce LED knot temperature Control the rated input power; The design of the secondary heat dissipation structure; reduce the heat resistance between the secondary heat dissipation structure and the LED installation interface to the minimum; reduce the surrounding environment temperature; reduce LED's itself thermal resistance. 4. LED semiconductor lighting light source heat dissipation method In general, the radiator can be divided into passive heat dissipation and active heat dissipation according to the way to take away heat. The so -called passive heat dissipation refers to the heat generated by the heat source LED light source to the air through the heat sink. Its heat dissipation effect is proportional to the size of the heat dissipation tablet, but this heat dissipation effect is relatively unsatisfactory. In the device, or for the heat dissipation of low -power and low -heat, the vast majority of devices take active heat dissipation, active heat dissipation is to actively take the heat from the heat sink through some equipment. Higher heat dissipation efficiency is the main feature of active heat dissipation and it has a relatively small volume. Another way is to make LED components by adopting the "vertical" electrode. Because there are metal electrodes in the upper and lower ends of LED components, this can get greater help on the problem of heat dissipation. For example, the GAN substrate is used as the material. Because the GAN substrate is the conductive material, the electrode can be directly connected under the substrate to get the benefits of fast dispersion and light, but because of the high material cost, this approach will also It is much more expensive than the cost of traditional sapphire substrates, which will increase the production cost of components.

Author: Tianhui-Air Disinfection Author: Tianhui-UV Led manufacturers Author: Tianhui-UV water disinfection Author: Tianhui-UV LED Solution Author: Tianhui-UV Led diode Author: Tianhui-UV Led diodes manufacturers Author: Tianhui-UV Led module Author: Tianhui-UV LED Printing System Author: Tianhui-UV LED mosquito trap

The difference between 5050 lamp beads and 5050RGB lamp beads 5050 beads: white light patch lamp beads, applied to lighting, more indoor use. 5050RGB lamp beads: color patch LED lamp beads, used for outdoor decoration, horse running lights, etc.; RGB refers to red, green, blue light three -found; The scattered angle is large, the consistency is good. The cost of 5050RGB lamp beads is mainly determined by factors such as chips, gold threads, brackets, etc. Enterprises can choose the appropriate lamp bead according to their own needs. Low -end markets generally use iron brackets, alloy lines, and domestic small chips. Copper brackets, alloy lines, and domestic chips are generally used in low -end markets. Mid -end markets generally use copper brackets, golden lines, and domestic chips. Middle and high -end markets generally use copper brackets, golden lines, and imported chips. High -end markets generally use copper brackets, golden lines, and internationally renowned brand chips. Our factory promises: All lamps are not as standard, adopt a well -known manufacturer chip of Zhuhai, two years of lamp bead warranty for two years, and passenger complaints. This lamp bead, we choose the well -known manufacturer chip, copper bracket, gold wire welding, imported glue, fluorescent powder. Strict low light decay process. Our factory is all lamp beads, which are warranty for two years. Zhuhai TIANHUI Optoelectronics Co., Ltd. was founded in 2017. The company is located in the first economic zone in China-Zhuhai. It is a national -level high -tech company that specializes in the research and development, production, and sales of high -quality LED lamp beads. The company's core team has nearly ten years of packaging professional technical background, advanced high -precision fully automatic production equipment. The main products are 5050 Lanads, 3528 lamp beads, 2835 lamp beads, 5730 lamp beads, 5050 lamp beads, 3535 lamp beads, 3030 lamp beads, Kero high -end LED lamp beads, 5730 built -in IC lamp beads, 2835 high cup built -in IC lamp beads, 5730 built -in IC lamp beads, Kerra series, ice blue series, purple light series, full spectrum series, golden light series lamp beads, white light sinking powder series, high -bright fog light beads and other products. Widely used in LED lamps, LED light strips, outdoor LED lamps, indoor lighting fixtures, commercial lighting lamps, LED advertising logo light sources fields. It is mainly sold to Zhuhai Baoan, Longhua, Longgang, Nanshan, Futian, Luohu, Guangming and other regional customers.

Author: Tianhui-Air Disinfection Author: Tianhui-UV Led manufacturers Author: Tianhui-UV water disinfection Author: Tianhui-UV LED Solution Author: Tianhui-UV Led diode Author: Tianhui-UV Led diodes manufacturers Author: Tianhui-UV Led module Author: Tianhui-UV LED Printing System Author: Tianhui-UV LED mosquito trap

There are many customers who buy Tianhui UVLED curing machines. They all have the maintenance of UVLED curing machines. The following is a professional UVLED manufacturer-Tianhui to analyze how to use your UVLED curing machine's service life to be guaranteed and extended. How can the service life of UVLED curing machines longer? The most important one is heat dissipation. Everyone knows that the requirements of UVLED curing machines for heat dissipation are very harsh, and a little carelessness will lead to abnormal work. In terms of heat dissipation maintenance and maintenance of relevant equipment, Tianhui Technology sort out the following points. We must first understand the usual cooling method of UVLED curing machines: 1. Cold and cooling heat dissipation. The wind and cold heat dissipation method is aimed at the UVLED curing machine with the light radiation intensity of the unit area. It is taken away through the heat generated by the fans through the heat in the UVLED curing machine. Heading wing tablets, settings with air inlets and air outlets. Water cooling heat dissipation. The water cooling heat dissipation method is aimed at the UVLED curing machine with a strong light radiation intensity of the unit area. It takes away the heat in the UVLED curing machine by liquid water that is greater than the heat capacity. After the heat exchange is exchanged Heating; after understanding the conventional heat dissipation method, let's talk about how to ensure the stable work of UVLED solidification functions. Maintenance should be noted: 1> Whether it is the UVLED curing machine with cold and water -cooled water, the heat dissipation method has the problem of inlet and outlets, so during use, the air outlet and outlet are smooth. Check whether the ventilation port is smooth every week or every two weeks, and clean the ventilation outlet. 2> The UVLED curing machine of water cooling and heat dissipation needs to replace liquid water regularly. The main purpose is to ensure that the thermal transmission pipes and the heat exchange grooves in the UVLED curing machine are not blocked, affecting the efficiency of heat exchange efficiency. Regarding the problem of UVLED curing, find Tianhui and above is some of Tianhui's maintenance tips on the cooling of UVLED curing machines. I hope it will be helpful to everyone. If you have questions about UVLED solidification, you can leave a message to consult us. Tianhui will answer the questions for the first time. Welcome everyone to discuss it.

Author: Tianhui-Air Disinfection Author: Tianhui-UV Led manufacturers Author: Tianhui-UV water disinfection Author: Tianhui-UV LED Solution Author: Tianhui-UV Led diode Author: Tianhui-UV Led diodes manufacturers Author: Tianhui-UV Led module Author: Tianhui-UV LED Printing System Author: Tianhui-UV LED mosquito trap

As a 11 -year -old manufacturer specializing in the production of UVLED curing machines in 11 years, Tianhui will continue to popularize some knowledge about UVLED optical curing equipment for free. UVLED optical curing equipment has attracted everyone's attention in recent years. It has excellent performance and efficient and energy -saving characteristics. After all, the device is the device. During the use process, factors such as frequency and maintenance methods will affect the performance of the UVLED optical curing machine. It is inevitable that a little problem is a little bit problematic. You dont have to worry about it. Unusual solution! First, the UV light of the UVLED device is not on or self -extinguished. If this problem occurs, first think of whether the UVLED light is aging, you can consider changing the UVLED light. In fact, it is not necessarily that the UVLED light is broken. If you are the UVLED optical curing machine of Tianhui you buy, you can see the display interface of the controller and operate according to the interface prompts. The UVLED device lights are not on. There are several reasons for the following aspects: 1> UVLED devices have abnormal signal input: such as high temperature alarm, traffic alarm, etc.; In this case Turn, whether the water -cooled machine is working normally, and is the water pipe blocked?. If the fan does not turn or the water cooling machine is abnormal, contact UVLED device manufacturer. 2> UVLED device circuit failure: If the cable is not tightly inserted, the internal circuit failure of the UVLED device, etc.; The cable is connected again, and the abnormality is still not resolved. There is a control power supply, but it cannot light up the UVLED light and the control panel abnormal light is not turned on before it is considered whether it is caused by the melting of the UVLED curing machine main circuit fuse. Then check whether the main circuit has a loose or short -ground circuit. Sometimes this phenomenon will appear when UVLED lights are old or deteriorated. If it is a device circuit failure, refer to the second point of the first point to solve it! Third, when the equipment is too high, when the temperature is too high, you must first consider whether the heat dissipation is not good. First check whether the fan runs normally, and clean up the dust at the fan. Using the environmental temperature is relatively high or the environment is harsh, Tianhui recommends that you can choose to buy a water -cooled UVLED curing machine to avoid the emergence of this situation. These three problems are more common when using UVLED curing devices, and the solution is relatively simple. I hope it can be helpful to everyone. If you also have questions about UVLED solidification, you can leave a message to Tianhui or directly call to consult and communicate!

Author: Tianhui-Air Disinfection Author: Tianhui-UV Led manufacturers Author: Tianhui-UV water disinfection Author: Tianhui-UV LED Solution Author: Tianhui-UV Led diode Author: Tianhui-UV Led diodes manufacturers Author: Tianhui-UV Led module Author: Tianhui-UV LED Printing System Author: Tianhui-UV LED mosquito trap

The basic principle of UV solidification is to use UV ultraviolet light irradiation to make the molecules of light -sensitive materials decomposed to form a highly active atom or highly active atom group. Finally achieve the purpose of molecular cross -linking polymerization. The dryness of the UV ink is the process of optical chemistry. The speed of light is 3 10km/s, which causes the chemical bonding time for a few seconds, and the printing speed is 5,000 pieces per hour. Different optical reactions and thermal reactions are different. The activation energy of thermal reactions comes from molecular collisions, which is longer, and the activation energy of optical reactions comes from optical energy. Therefore, UV optical curing is much more time -saving than traditional thermal reaction curing, and the finished product can directly accumulate shipments, which is very convenient. In addition, UV optical solidification UV ink and traditional ink dry and more energy saving and environmental protection. UV light curing, especially LED -type UV optical curing, except for producing valid UV ultraviolet rays, infrared and ozone are basically not produced. It is also particularly friendly to the production workshop. It does not produce infrared rays. It means that it will not produce special calories. The latest UV ink curing equipment of Tianhui will become the main force of UV ink curing in the future!

Author: Tianhui-Air Disinfection Author: Tianhui-UV Led manufacturers Author: Tianhui-UV water disinfection Author: Tianhui-UV LED Solution Author: Tianhui-UV Led diode Author: Tianhui-UV Led diodes manufacturers Author: Tianhui-UV Led module Author: Tianhui-UV LED Printing System Author: Tianhui-UV LED mosquito trap