What are the characteristics of the Chinese LED lamp market? The first is the price, the second is the price, and the third is the price. As for the technical parameters, service life, warranty period, Shenma is a cloud.
Buyers will choose cheap LED lights, but buyers don't want to think that such low-cost LED lights can manufacturers make quality products. After all, you can't let LED manufacturers put them down. The most typical LED bulbs and LED ceiling spotlights are used as an example to illustrate their cost.
How do the cheap LED ceiling spotlights come from? The cost of LED lamps is mainly three - lamp beads, casing, and drive power. To make the price the lowest, then only work on these three aspects.
Lamp Beads - Zhongshan Guzhen domestic 1W lamp beads sell 2 cents, why do two cents dare to sell? The gold wire inside the lamp bead is replaced by copper wire, other raw materials are replaced by inferior materials, this is the consumer can not It is perceived and nominally 1W, but it may only be 0.5W with device detection, and consumers generally will not test it.
The outer casing - with some corner aluminum or plastic, costs between 1 and 3 dollars.
Drive power - now there are more than one inferior drive on the market, and even lower, the manufacturers who do LED lights fail to know how many, and those who are not responsible for the inferior drive for profit, I don't know how much money I made.
In this way, a 3W LED ceiling spotlight is 3 lamp beads + a shell + a drive is OK, let's calculate the cost of those mid-range goods: lamp beads (2 yuan) + shell (3 yuan) + drive (2.8 yuan) + labor (1 yuan) + packaging (0.5 yuan) + other (1 yuan) = 10.3 yuan.
Businesses still have to make money, no money to do business no one to do! Plus management costs, inventory costs and development costs, etc., as well as business extraction of about 5%. Think about it, will the 3W LED ceiling spotlight sold below 10 yuan be a qualified product? As for the high-end 3W LED spotlight, the reasonable price: lamp bead (6 yuan) + shell (5 yuan) + inner shell (2 yuan) +Drive (5 yuan) + labor (1 yuan) + packaging (1 yuan) + other (1 yuan) = 21 yuan, that is, > 21 yuan LED spotlight is a normal and reasonable price!
So, how to choose a good LED fixture? The following points are available for reference:
1, LED brightness is different, the price is different. LEDs for LED luminaires should be suitable for laser class I standards.
2, anti-static ability of the LED, long life, and therefore high prices. LEDs with an antistatic greater than 700V are typically used for LED lighting.
3. LEDs with the same wavelength have the same color. If the color is consistent, the price is high. It is difficult for manufacturers without LED spectrophotometers to produce pure color products.
4. Leakage current, LED is a unidirectional conductive illuminator. If there is reverse current, it is called leakage, and LED with large leakage current has short life and low price.
5, the angle of illumination, LEDs with different uses have different illumination angles. The specific illuminating angle is higher in price.
6, life, the key to different qualities is life, life is determined by light decay. Low light decay, long life and high price.
7, the wafer, the LED illuminator is a wafer, different wafers, the price difference is very large. The chips in Japan and the United States are relatively expensive. Generally, the price of wafers in Taiwan is lower than that in Japan and the United States, and the lowest in China.
8, colloid, ordinary LED colloid is generally epoxy resin, LED with anti-UV and fire retardant is more expensive, high-quality outdoor LED lighting should be resistant to UV and fire.
In terms of health, the price of products designed with non-toxic materials is high, especially for indoor LED lighting. Don't use cheap LED lighting. At present, only a few LED manufacturers are made of non-toxic materials, which can be directly smelled by the nose. The smelly products are much cheaper than the odorless ones, which contain excessive lead, mercury, cadmium and other toxins. From the perspective of applicable environmental safety, there is a reliable dust-proof and moisture-proof design, and the price of LED products with fireproofing, ultraviolet protection and low-temperature cracking is high.
As for the LED bulbs, the most important driving power source, the low-end products (including some big brands) use the RC capacitor, the RC resistor is: AC 220V input - CBB step-down capacitor 400V 105J——Full-bridge rectification, internal diodes 4 diodes are connected and packaged in the form of bridge full-wave rectifier circuit—voltage regulator, filter capacitor (parallel) – output, two 474 and two 510 are used internally.
This method is relatively extensive, the peak voltage far exceeds the withstand voltage of the Zener tube and the capacitor, and it is easy to be broken down, which may cause an electrical fire to occur, posing a huge hidden danger to the user. There is news that a consumer bought a cheap LED light to explode, and the LED light was blown apart. Those who bought too cheap LED lights would buy a time bomb at home. It is best to keep the lamp for the safety of the family’s life and property. Take it down.
Edit: Bober
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