Common causes of LED street lights not turning on

As an important lighting facility for urban development, the quality of LED street lights is the top priority of everyone's attention. However, LED street lights market prices are varied and the quality is uneven. The price war in the industry has led manufacturers to continuously reduce costs in terms of materials and craftsmanship. This has a great impact on the quality of LED street lights, so we often see street lights in use It will not light up after a period of time.

Replacement of LED street lights is very cumbersome, because there are many internal parts of LED street lights. Except for the light source (chip), damage to other parts will cause the chip to not light up. The LED street lights need to be removed and shipped back to the factory for testing. For outdoor high-altitude devices such as LED street lights, installation is more difficult and maintenance is even more difficult. For street light managers, unstable product quality increases maintenance costs. There are also many problems in the LED street light industry, leading to increased product follow-up service costs:

1, configure the virtual label

The enthusiasm of LED street lights is also accompanied by a reduction in price and profit. The fierce competition has caused many businesses to start cutting corners and imagining product parameters.

2. Counterfeit chips

The core of LED lamps is the chip, which directly determines the performance of the lamps. However, some unscrupulous merchants take advantage of customers' unprofessionalism and use low-cost chips to allow customers to buy low-quality products at high prices, causing economic losses and causing serious hidden dangers to LED lamps.

3, copper wire pretends to be gold wire

Many LED manufacturers try to develop materials such as copper alloy, gold-coated silver alloy wire, and silver alloy wire to replace expensive gold wires. Although these alternatives are better than gold wires in some characteristics, they are much worse in terms of chemical stability, the reliability of the light source is reduced, and the use time is long, and the LED lamp beads are more likely to break and die.

4. The design of the light distribution system of street lamps is unreasonable

In terms of optical design, if the design of the light distribution system of the street lamp is unreasonable, the lighting effect will not be ideal. Problems such as 'bright under the lamp

5. Poor heat dissipation design

In terms of heat dissipation design, every time the PN junction temperature of the LED chip increases by 10 degrees, the life of the semiconductor device will be reduced by multiples. Due to the high brightness requirements of LED street lights, the use environment is relatively harsh, if the heat dissipation problem cannot be solved, it will quickly lead to LED aging and reduce stability.

6, power failure

If the power supply fails, the phenomenon of 'the whole lamp is off

7, safety failure

The street lamp power supply has no leakage protection; the street lamp ballast quality is shoddy; the circuit breaker has not been tested for sensitivity, and the rated trip current is selected too large; the use of the metal sheath of the cable as the PE main trunk has a complicated process and low reliability ; IP waterproof and dustproof level is too low.

8, there are substances harmful to the light source in the lamp

The blackening of LED light sources is a common problem encountered by major LED companies. Most materials in lamps need to be checked for substances that affect the life of the light source. The occurrence of the above problems has a great impact on the performance of the LED street light, and even directly causes the LED street light to not light up.