Wuhan solar street light on how to avoid death lamp

As solar street lamps light source at present basically is to use led light source, in use process we often encounter the led is not bright, this is the death of the led lamps and lanterns light phenomenon. The cause of death lamp, generally there are two, one is LED leakage through the p-n junction caused by loss of

as solar street lamps light source, LED light source is basic. In use process, we often encounter the led is not bright, this is the death of the led lamp light phenomenon. Lights out there are usually two reasons. Is a light emitting diode leakage current is too large, will not lead to a PN junction failure, lead to local light dead, does not affect the work of the entire lamp. Two is the internal wires are broken led lamp, led to leds without an electric current passes through, produce dead lights, cause the whole lamp can't work normally. After a lot of careful analysis and reference documents at home and abroad, our company road lamp light pole of the company's technical staff put forward the following proposals for prevention of dead lights in the first place, to prevent static electricity. Static electricity is great harm for light emitting diode lamp of the devil. Any problem in any link will lead to light emitting diode is damaged, and its performance worse and even failure. We know that the human body static electricity can reach 3000 volts, enough to breakdown and damage the light emitting diode chip. In LED packaging production line, it is necessary to design scientific and standardized grounding design. Usually, the grounding resistance is 4 ohm. In some occasions with higher requirements, the grounding resistance and even need to be 2 ohm or less. Second, try to use automatic welding equipment. If you use the manual welding, the welding temperature must be strictly controlled. This is because the use manual welding. If use normal soldering iron, solder iron temperature - in 300 More than 400 ℃. Welding temperature can also lead to high lights. The coefficient of expansion of light-emitting diodes (leds) at high temperature lead several times higher than at about 150 ℃. Due to excessive heat expansion and cold contraction, internal gold wire solder will solder joints and lead to lights. In order to avoid the above phenomenon, the company has a strict production process manual, detailed rules for the staff's dress and the production environment configuration, and strictly enforced, effectively avoid the happening of the online phenomenon in the process of production. Ensuring the quality of street lamps and other led lighting products production