Generally, the finished lamps all look the same, but the number of lamp beads inside is different, and the number of LED lamp beads is different, so the price is different. How many LEDs are there on the LED lamp? This is what customers should be more concerned about.
Yes
2. price;
Due to the different materials of the lamp shell, the price is different.
3.LED welding effect;
The assembly of LED lamps can be divided into manual welding and machine welding. Manual welding is to use a soldering iron and use the most primitive method to weld. First, the products produced by this mode of operation are ugly in appearance (the sizes of solder joints are inconsistent, and flux remains).
Many, solder joints are not smooth, LED packages are burnt out, etc. ), machine welding is different. Machine welding adopts reflow soldering, which not only makes the appearance of the welded product beautiful (the solder joint size is uniform, the solder joint is smooth, and there is no flux residue,
LED package intact), the chip will not be burned by static electricity.
4. The brightness is 4. LED lamp;
LED lights with different colors will have different luminous intensities, and the commonly used unit is mcd, that is, milliCandeira. The higher the value, the greater the luminous intensity, that is, the brighter. This is an important index for selecting LED lamps. The higher the brightness requirement, the higher the light band.
The more expensive, the more expensive the high brightness LED chip.
The color of 5.5. LED
There are many small packaging factories without spectrometers, and the quality is difficult to guarantee. The color consistency of LEDs without spectral separation is poor, and of course the price difference is also relatively large.
6.LED chip;
The origin of the chip determines the price and quality of the lamp. Customers can often determine the quality of LED lamps by knowing the supplier of LED chips used in LED lamps, because chips are the biggest factor in determining LED prices.
Therefore, knowing the chip suppliers can roughly determine the price range of LED lamps, which is one of the effective means for experienced buyers to evaluate suppliers.
7.FPC material:
FPC can be divided into two types: calendered copper and coated copper. Coated copper is cheaper, while calendered copper is more expensive. Copper-plated pads are easy to fall off when bent, but calendered copper is not. Which FPC material to use depends on the buyer's own use of the ring.
Make a decision.
8.LED packaging;
It is divided into resin encapsulation and silica gel encapsulation. Resin packaging is cheaper, because the heat dissipation performance is slightly worse, and everything else is the same. Silica gel packaging has good heat dissipation performance, so the price is a little more expensive than resin packaging.
9. Service life
Life of LED lamp: Although the life of LED is 80 ~ 65438+ million hours, because LED is a constant current component, the constant current effect of LED lamps produced by different manufacturers is different, and of course the life is different. As a user,
It is necessary to have a very clear understanding of the service life of LED lamps.
10. Color temperature: Pay special attention when purchasing.
The color temperature is below 3300K, and red gives people a warm feeling; There is a steady atmosphere and warm feeling, which is generally called warm color temperature. The color temperature is between 3000-6000 K, and people have no obvious visual psychological effect in this color, which is relatively cold.
A quick feeling; So it is called "neutral" color temperature. The color temperature exceeds 6000K, and the light color is blue, giving people a cold feeling, which is generally called cold color temperature.
Yes 1 1. FPC has passed the environmental protection certification and UL certification? Whether there is a patent for LED, etc. Some are certified and patented, some are more expensive and some are cheaper.
12. Power configuration:
The overall quality of lamps has a great relationship with power supply configuration, which is also the main factor of price difference. Power supply generally has rated voltage, rated current and rated power. When buying lamps, you must consider the configuration of power supply.