I. Overview
LED lighting is getting more and more sought after by the market. Nowadays, the city's lighting project has basically eliminated neon lights and selected LED related products. In general, LED lighting fixtures for urban lighting projects can be divided into three types: point, line and surface. Among them, as a representative of linear products, the application of guardrail tubes is particularly extensive, such as commercial buildings, bridges, A large number of LED guardrail tubes are used for the lighting of residential buildings and riverside landscapes in the community.
However, as you can see everywhere, you will often see the original outline of a beautiful building, but you often see a section that is not bright, even a slanting sling, which not only seriously affects the image of the owner, but also causes Safety hazards, let everyone have doubts about the quality of the guardrail tube, how is the quality of such products?
Of course, the competition of market prices makes it happen. In the market, there are always manufacturers that rely on low-price competition, and the price is unreasonably declining. Manufacturers must save all aspects and resources from all aspects, and all kinds of materials are enough. When you buy it, it will be fine. This is the helpless choice of most low-priced products manufacturers. It is understandable that the factory has to guarantee its own profits, but it is especially important for the owners to choose.
Is there no technology for the guardrail tube? Isn't it just a piece of PCB, plugging in LEDs and then applying glue? LED is not a simple product, but a new product that integrates optics, electronics and semiconductor technology. LEDs have different characteristics from previous optical products such as light sources and traditional diodes. LED application technology is integrated with semiconductors. Comprehensive technology in electrical control, optics, physics, and chemical engineering. OSRAM, Nichia and other industry giants have a deep understanding of this. Large-area, long-distance, full-color guardrail tubes are also required for control ICs and intelligent remote control.
Now this technical article about LED guardrail tube is published. Combining the practical experience of relevant people, I hope to provide some reference and reference for people like advertising engineering companies and owners.
Second, the technical parameters of the guardrail tube
LED guardrail lights are available in monochrome, two-color, and colorful colors. They can be controlled by built-in or external IC circuits to achieve various colors such as gradation, jump, color flicker, random flicker, alternating gradient, running chase, fixed color, etc. The effect of the change, the operating parameters of each pattern can be independently configured, the automatic running mode can be edited, and the specified pattern can be selected. It can simultaneously control the lighting of dozens to thousands of LED guardrail tubes, automatically store setting parameters, and reload preset parameters. The number of LEDs in a general guardrail tube is: 96/108/144. At present, the shape is mainly D-shaped tube. Use voltage: DC 12V/24V/36V and AC 220V.
Third, the choice of guardrail pipe components
1, LED particles:
LED particles are the most important components in the guardrail tube, and they also account for the largest proportion of the cost structure of the LED guardrail tube. The LED granules used in the LED guardrail tube are mostly in-line LED LAMP. The package composition of the in-line LED LAMP is mainly LED chips, brackets and sealants. How to directly affect the final product from the quality of LED packaging , and the in-line LED LAMP is the lowest investment threshold in the LED packaging industry. Several thousand manual devices can be produced, which is the same. The price of the standard LED LAMP may be one of the main reasons for the ten-fold spread.
For most application customers, the quality of this part is difficult to distinguish, and most application customers only know it. The safest way, of course, is to buy the products of regular big factories. Of course, there are also stories of so-called Taiwanese big factories shoddy. Therefore, if you want to be confident in your own application products, you must be clear about the entire LED packaging manufacturer. Only then can we grasp the core of this part. In order to get good from the quality source of the guardrail tube.
2, power supply:
There are two ways to supply the column tube: high voltage of 220V and low voltage of 48V or less. 220V direct power supply is a dangerous and uneconomical way. Some manufacturers lack systematic understanding on the basis of electronic component selection and circuit design. The typical practice of the mountain plug version is to use the RC. And use low quality capacitors and resistors. This approach is first of all a big problem with security; secondly, it is too power-hungry and has great damage to the power grid. The power supply department is firmly opposed. We have encountered multiple instances in the past, LEDs are power-saving but the products are produced with amazing power consumption.
For example, a certain bridge needs more than 1,000 meters of guardrail pipe. Some people install electricity after low-cost supply. In less than half an hour, the power supply line of the whole city is almost collapsed. The power supply bureau is forced to power off the entire line. Our technicians were invited to the site to help analyze the reasons and found that each guardrail tube used a 2.2μ capacitor, the measured power consumption exceeded 38 watts, and the power consumption of the previously reported LED was more than 5 watts. need more. The most terrible thing is: due to the sudden addition of a large number of capacitive loads on the line, the power supply line mismatch has formed a self-excited shock. Fortunately, if it is handled properly, it may cause a big accident. Therefore, we strongly urge the power supply of the guardrail tube not to use the 220V capacitor step-down method. We believe that DC and segmented power supply below 36V is a recommended power supply.
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