How to distinguish between good and bad led bulbs? LED lamps identification skills
The rapid growth and popularity of LED lighting products are gradually replacing traditional bulbs. LED lighting is also vigorously advancing. Therefore, there are many types on the market. When choosing, you need to distinguish the advantages and disadvantages. Many people will not choose LED bulbs. How to distinguish good from bad? What are the identification techniques for LED lamps? Don't worry, BENWEI LIGHTING is here to explain it to everyone, let's take a look.
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How to distinguish between good and bad led bulbs?
1. How to distinguish low-quality LED lamps: the brightness of LED lamp beads
The brightness of the light strip made of poor lamp beads is relatively low, because the quality of the LED lamp bead light-emitting chip determines that the brightness of the made LED lamp bead is not high. Those chips are inferior goods with a cost of 1-2 cents, and the problem comes after a period of use, leakage (dead light). The characteristics of things made by genuine chips are high brightness and stable performance, but the price will be high.
2. How to distinguish low-quality LED lamps: FPC board quality
FPC boards are divided into double-sided boards and single-sided boards. Needless to say, double-sided boards are definitely better than single-sided boards, which is mainly reflected in the heat conduction performance. Besides, the quality is definitely more stable and the corresponding price is higher.
3. How to distinguish low-quality LED lamps: the cleanliness of solder joints and surface
The LED strips produced by regular LED strip manufacturers are produced by SMT patch technology, solder paste and reflow soldering process. Therefore, the solder joints on the LED light strip are relatively smooth and the amount of solder is not too much. The solder joints extend from the FPC pad to the LED electrode in an arc shape. The counterfeit version of the LED strip has an uneven amount of solder at the solder joints, mostly as a dot covering the solder foot, and at the same time there will be varying degrees of tin tips, which is a typical phenomenon of manual soldering. All homes are produced with placement machines. In addition, the cleanliness of the surface of the LED strip produced by SMT process is very good, and no impurities and stains can be seen. If the counterfeit LED light strip produced by hand soldering process is used, no matter how it is cleaned, there will be stains and cleaning marks on the surface.
4. How to distinguish low-quality LED lamps: color temperature difference
Regarding the color temperature difference, due to the LED chip being debugged by the lamp bead manufacturers, there will be more or less deviations. The existence of the color temperature difference is also normal. However, the LED strips produced by the regular LED strip manufacturers are basically invisible to the naked eye in the same batch. . The color temperature difference of the same batch of inferior manufacturers is obvious.
5. How to distinguish low-quality LED lamps: material
The high-pressure lamp belt basically uses PVC material, and the regular manufacturers will use domestic environmental protection materials, which are basically tasteless. Informal manufacturers use secondary recycled PVC materials, which will have a great plastic smell during production. Low-voltage lamps with sleeves, regular manufacturers will use silicone sleeves, and non-standard manufacturers use PVC sleeves. From here, the price varies greatly.
6. How to distinguish low-quality LED lamps: packaging
Regular LED light strips will be packaged in anti-static coils, usually 5 meters per roll or 10 meters per roll, and then sealed with anti-static and moisture-proof packaging bags on the outside. The counterfeit version of the LED light strip will use recycled reel for cost saving, and then there is no anti-static and moisture-proof packaging bag. If you look closely at the reel, you can see that there are marks and scratches left by the removal of the label on the outside.
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So how should we identify it when buying on Taobao?
1. If you want the seller to take out the test report, you can see the five parameters at once, and you know it in your heart.
2. It is recommended not to buy products below 6 yuan on Taobao. After all, LED lights have not yet reached the stage of popularization, and the national standards have not yet come out.
3. Looking at the shell on the picture, it determines the service life (heat dissipation) of the LED lamp beads; the appearance is the same, and the thickness of the aluminum material determines the price.
For example: light bulbs can be divided into: chip, aluminum substrate, housing, power supply, these parts. Each part has different brands, different batches, and different prices. It is equivalent to a free combination. If each part is used well, the price will be very high, otherwise the price will be very low; if there are parts that are well used and some are poorly used, the price will be moderate.
LED lamps identification skills:
1. Look at product packaging and trademarks
This is the simplest and most intuitive method of identification. The outer packaging of genuine LED lights should be marked with information such as rated voltage, voltage range, and rated power, as well as brand trademarks and related certification marks. The printing quality of the trademark on the outer packaging of the genuine LED lamp is good, the font is clear, and it is not easy to fall off. Even if it is wiped with a soft damp cloth, the trademark is still legible. The trademark printing quality of counterfeit and inferior products is poor, and the fonts are blurred, and the trademarks of some products can be erased with a damp cloth. In addition, there are no printed trademarks and related certification marks on the outer packaging of some inferior products.
2. Look at the appearance of the lamp
Genuine LED lights use three-primary color tubes, and the color of the tube is whiter. After covering it by hand, the color will look whiter. When purchasing, consumers can put multiple LED lights together for comparison. Products with better tube shape and size consistency are generally mass-produced products, and the quality is mostly guaranteed. In addition, it is necessary to check whether the appearance of the LED light is cracked or loose, and to observe whether the interface has been pryed over. If there is, it means that it is a low-quality product. Genuine LED lights will not be loose or tilted during installation and disassembly.
Consumers can also distinguish the quality of the LED lamp by its shell material. The plastic shell of the genuine LED lamp is made of flame-retardant material, which has a rough texture, similar to frosted glass. Inferior products are made of ordinary plastics with smooth and shiny surfaces. Such materials are easily deformed and flammable.
3. Look at the temperature at work
Under working conditions, the temperature of genuine LED lights will not be too high and can be touched by hands. If the purchased product heats up significantly during work, it means that there is a problem with its quality. In addition, if the LED light flashes, it also indicates that there is a problem with its quality.
4. Look at the electromagnetic interference
In our country, electromagnetic compatibility is an important indicator for assessing whether electrical products are qualified. Therefore, consumers can check whether there is a relevant mark that passes the test on the outer packaging when purchasing LED lights.
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The above is the explanation of the knowledge of how to distinguish good from bad and the distinguishing skills of LED lamps and lanterns. The content is for your reference only, and I hope it can be helpful to everyone.
