LED street lamp price gap is large? Secretly telling you the truth

LED lamp structure mainly includes the following major parts, namely lamp beads, heat sinks, power supplies, fans, main boards, housings, lenses, wires and so on. To make the price low, then you have to work hard on the material.

Lamp beads

LED lamp beads are on the market at different prices. Why are some lamp beads sold so cheaply, and some lamp beads have a price difference of several dozen times? In fact, it is tricky. First of all, its material is definitely the worst. For example, the wire is replaced by a copper wire instead of a gold wire. The bracket is made of recycled materials or scrap. The raw materials are not judged by the consumers. Only after the use is the problem is slowly exposed. come out. The second is to increase the power usage. Originally, the normal power of the lamp bead may be only 1W, 0.75W, and the power is added to 3W. It is beyond the scope of use. The initial brightness is very high, but the attenuation is very fast, and it is dark in a few months. Again, the virtual standard power, the standard is 3W lamp beads, the actual standard is to take 1W or 0.75W lamp beads instead, or even lower, this consumer is generally not tested.

heat sink

When the lamp is illuminated, a part of the electric energy is converted into heat energy, and the heat dissipation is poor, which directly affects the service life of the lamp bead. LED Par Light radiator, consumers can open the lamp housing to identify the naked eye. Nowadays, many PA lamps on the market are equipped with small and very thin radiators, and even many merchants do not install radiators at competitive prices. Everyone knows how to ensure good heat dissipation without a radiator in a high-powered Par light. How can we ensure stable operation when the lamp is fully lit for a long time?

power supply

Many low-priced power supplies on the market are virtual standards or use 108W low-cost power supplies that can't fully drive the rated power of 180W. In fact, consumers can easily identify the quality of the power supply. The transformer and power tube on the good brand power supply are relatively large in size, and the overall appearance is full and full of texture; the component arrangement and production process are relatively good, and the overall appearance is clean and beautiful. Low-cost and unsecured power supply design, cut corners, anti-surge, rectification and filtering, steady flow can save provinces, can not save and save, electronic components are also useful for recycling materials, regardless of the actual use of safety and stability.

Motherboard:

There are two types of drive boards on the market, one is constant voltage drive board and the other is constant current. The constant current motherboard has high stability and the price is more than twice as expensive as constant voltage. The low-voltage LED lamp is mostly used in the constant-pressure garbage main board. When the temperature of the lamp body rises, it cannot be protected, resulting in a significant loss of the service life of the LED lamp. There is also a cost savings, the main board and the display panel are integrated.

shell

Low-cost LED lamp with some impurities aluminum die-casting or thin aluminum or even plastic shell, low cost, very poor heat dissipation conditions.

Summary: As the saying goes, a penny is worth the goods. If you encounter a manufacturer's lamps that are 40% cheaper than other normal manufacturers, don't be confused at this time. Buying cheap things is what everyone expects, but with so much less than the market price, you should be more careful to confirm whether the parameters described by the supplier are true, you have to test it. Low-priced, outrageous products, regardless of the seller's reasons. Because the low price and the cost are not enough, how can there be a guarantee of qualification?