Why are LED street lights so cheap?
The led lighting industry is developing rapidly, and there are many kinds of lamps and lanterns patterns. LED street lamp manufacturers are a solid-state cold light source, which has the characteristics of environmental protection, no pollution, low power consumption, high light efficiency, and long life. Therefore, LED street lamps will become the best choice for energy-saving transformation of road lighting. LED street light is a kind of high-efficiency solid-state light source formed by semiconductor PN junction that can emit light with weak electric energy. Under a certain forward bias voltage and injection current, the holes injected into the P zone and the electrons injected into the N zone are in After being diffused to the active area, photons are emitted through radiation recombination, which directly converts electrical energy into light energy. The price difference is also obvious. LED street light is a kind of high-efficiency solid-state light source formed by semiconductor PN junction that can emit light with weak electric energy. Under a certain forward bias voltage and injection current, the holes injected into the P zone and the electrons injected into the N zone are in After being diffused to the active area, photons are emitted through radiation recombination, which directly converts electrical energy into light energy. There are many manufacturers of led and led lighting. Different manufacturers use different quality LEDs to create different LED lights. Due to the increasingly fierce price war, products with almost the same appearance, structure and function have a price difference of 2-3 times. Many users are temporarily confused, I don't know where the price difference comes from. Generally, it is difficult to distinguish LED lighting manufacturers that do not produce LED light-emitting tubes. Especially consumers.
Therefore, choose your own good source of LED production, or have a complete LED test equipment, LED lighting factory will be better, so it will be safer to buy LED lighting products.
Let's see what factors cause the price difference between LED lights:
1. Brightness: LEDs of different brightness and price. Brightness is different from wattage. It is expressed in lumens. It refers to the intensity of light in a unit space. Generally 100-600 lux indoors.
2. Antistatic ability: strong antistatic ability and long life, so the price is high. Usually antistatic led greater than 700v can be used for led lighting.
Wavelength: LED? If necessary, the same wavelength is consistent in color? If the colors are the same, the price is high. It is difficult for manufacturers without LED spectrometers to produce pure color products.
4. Leakage current: LED is a unidirectional conductive light emitter. If there is a reverse current, it is called leakage. LEDs with large leakage current have a short life and low price.
5. Light-emitting angle: LEDs for different purposes have different light-emitting angles. Special lighting angle, higher price. If the angle of diffusion is full, the price is higher.
Life: The key to different qualities is life. Life is determined by the attenuation of light. Light decay, long life, long life, high price.
LED chip: The luminous body of the LED is a chip, and the price of different chips varies greatly. Chip prices in Japan and the United States are more expensive, and the prices of LED chips from Taiwanese factories and manufacturers in mainland China are also lower than those in Japan and the United States.
8. Chip size: The size of the chip is expressed by the side length, and the quality of the large chip LED is better than that of the small chip. The price is directly proportional to the chip size.
At present, there are still some criminals in the LED lighting market, cheating suppliers, deceiving material suppliers to produce finished products, and selling finished products at abnormally low prices in exchange for cash. There are also a few LED lighting manufacturers with unrealistic promises to deceive dealers and users, and then use the strategy of constantly changing corporate names or responsible persons to shirk their responsibilities. Therefore, consumers must pay more attention to these details when buying lamps, make more comparisons, and refer to some opinions.
purchase suggestion:
1. In terms of brands, well-known brands have their own factories and R&D teams. They usually have direct contact with the end customer. No distributors make the difference, and the price and quality are guaranteed.
two. Looking at the certification, LED is a high-tech enterprise, with the support of the state, it needs 3C, CER, ROHS and other certifications.
3. Look at hardware, chips, power supplies and packaging are all core devices. You can skip domestic brands or domestic packages.
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Product Features:
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>Rust-proof, dustproof and waterproof IP65.
>5 years warranty.
