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LED Light Bar Structure Is Simple

Nanjing Huiguang Lighting Co.,Ltd | Updated: Apr 12, 2018

Led light bar works is what?

From the led light bar light level, LED lights are GaN chip and yttrium aluminum garnet (YAG) made together. GaN chip with blue light (λp = 465nm, Wd = 30nm), high temperature sintered Ce3 + -based YAG phosphor is excited by this blue light after the yellow light, the peak 550nm. The blue LED light substrate is mounted in a bowl-shaped reflective cavity, covered with a thin layer of resin mixed with YAG, about 200-500 nm. LED light substrate is part of the blue light is absorbed by the phosphor, and the other part of the blue light and phosphor yellow light mixed, you can get white. Now, for InGaN / YAG white LED lamp, by changing the chemical composition of YAG phosphor and adjust the thickness of the phosphor layer, you can get the color temperature of 3500-10000K colored white light. This way through the blue LED light to get white light, simple structure, low cost, high technology maturity, so use the most. LED Strip light This is one of the principles of led light bar.

Led light bar works is what?

At the physical level, electrons in an atom have a lot of energy levels, and when the electrons jump from the high energy level to the low energy level, the energy of the electrons is reduced, and the reduced energy is converted into photon emission. A lot of these photons are laser. But the difference is that the LED does not emit light through the electronic transitions inside the atom, but by adding a voltage across the PN junction of the LED so that the PN junction itself forms an energy level (in fact, a series of Level), LED Strip light and then electrons jump on this level and produce photons to glow. When the current through the wire acting on the chip, the electron will be pushed to the P area, in the P area with the hole in the electronic composite, and then will be issued in the form of photon energy, which is the principle of LED light. And the wavelength of light is the color of light, LED Strip light which is determined by the material that forms the P-N junction. This is one of the principles of led light bar.

Understand the principle of led light bar is what, and then from the led light of the production process to understand led light bar. The quality of the LED light strip depends on the manufacturer's attitude and the ability to own the equipment. To produce high-quality LED flexible light bar must be a sound management approach and a reliable incoming inspection process to ensure that the use of highly accurate positioning of the LED placement machine placement, LED Strip light and then through the wave soldering, welding after the PCB can be carried out Testing separation, connection, testing, aging, sealant, aging, packaging finished product. Each link and step will affect the performance and stability of the LED soft light bar, workshop-style manual welding and packaging out of the soft light is not in the anti-static workshop with precision LED placement machine and dust-free packaging out of high quality LED soft light bar in the same breath. This is the led light of the production process, in fact, is still relatively complex.

Understand the led light of the production process, led light bar in what aspects of it? The initial LED used as instrumentation indicator light source, LED Strip light and later a variety of light color LED traffic lights and large area display has been widely used, resulting in a very good economic and social benefits. Automotive lights are also important areas of LED light source applications, as the LED response speed, you can early to follow the driver of the vehicle to know the driving conditions, reduce the car rear-end accident occurred. In addition, LED lights in the outdoor red, green and blue full color display, keychain miniature torch and other fields have been applied. The above is the application of led light bar, of course, the actual situation may be more complex.