LED products need anti-static
LED products currently have very broad market prospects, especially in the field of lighting. If the LED light source can be widely used in the lighting field, it will be a revolution in the history of human lighting. However, due to technology and other factors, it cannot be widely promoted at present. Many LED products are currently used in the lighting field, such as LED lawn lights, LED guardrail lights, LED underwater lights, LED spotlights, LED underground lights, etc.
LED light source has the advantages of energy saving, environmental protection, long life and no radiation. Therefore, the application of LED light sources is more and more extensive. At the same time, we should also understand several issues related to LED products.
1. LED products should be powered by a DC constant current power supply
In order to reduce product costs, some manufacturers use the "resistance-capacitance-step-down" method to supply power to LED products, which will directly affect the service life of LED products. Using a dedicated switching power supply to power LED products will not affect the life of the product. It is best to use a constant current source, but the product cost is higher.
2. It should be noted that the increase in temperature will reduce the internal resistance of the LED.
When the external environment temperature increases, the internal resistance of the LED light source will decrease. If a regulated power supply is used to power the LED, the working current of the LED will increase. When it exceeds its rated operating current, it will affect the service life of LED products. The LED light source will "burn out", so it is best to use a constant current source to ensure that the operating current of the LED is not affected by external temperature.
3. Pay attention to the sealing of LED products
No matter what kind of LED products, as long as they are used outdoors, they will face the problem of moisture-proof sealing. If not handled properly, it will directly affect the service life of LED products. At present, a small number of manufacturers with high requirements for product quality use the traditional epoxy resin "watering" method to seal LED products. This method is more troublesome to operate. It is not very suitable for larger LED products (such as LED fence lights), which will also increase the weight of the product.
4. Anti-static measures need to be taken
In the process of producing LED products, certain anti-static measures must be taken. For example, the workbench must be grounded, workers must wear anti-static clothes, anti-static rings and anti-static gloves. If necessary, you can install antistatic ions. The fan should also ensure that the humidity in the workshop is about 65% to prevent the air from being too dry and generating static electricity, especially green LEDs are relatively more susceptible to static electricity damage. . In addition, the antistatic ability of LEDs of different quality grades is different, and the antistatic ability of high-quality LEDs is stronger.
5. LED guardrail light control technology
Currently, the most widely used control technology for LED guardrail lights is the "serial communication" method (mainly based on the DXM512 protocol). Its advantage is that each guardrail light has no specific "code" and can be replaced at will, which is convenient for production and engineering installation. But its biggest disadvantage is that once damaged, it will directly affect all guardrail lights behind it, just like a car driving on a single-lane highway. Once the car "broken down", it will cause all subsequent cars to malfunction. Ordinary surgery. For wall lamp projects of hundreds of meters or even thousands of meters, due to external factors and the quality of the product itself, it is difficult to ensure that each wall lamp will not have problems
In addition, the quality of LED light sources on the market varies greatly. High-quality LED light sources not only have high brightness, low light attenuation and strong antistatic ability, but also determine their long service life, but their price is several times cheaper than LED light sources. We often see some LED lighting projects. These projects are indeed beautiful at first, but they will soon be "incomplete", and some projects may not even be handed over. Therefore, manufacturers and users should not "strike hard" on prices. Choosing high-quality LED light sources and taking effective technical measures to ensure the quality of LED products is the way out.