How to distinguish the quality of lamps? How to distinguish inferior LED lamps?
Lamps are common in our lives nowadays. A good lamp can be used for a long time. On the contrary, it may not light up frequently or change the bulb frequently, so you must distinguish it when choosing, so how to distinguish the quality of the lamp? How to distinguish inferior LED lamps? Let’s take a look at Benwei lighting.
Lamps
How to distinguish the quality of lamps?
Lamps are a wide range of electrical products. It can be said that everyone's work and life cannot do without it. With the improvement of people's living standards and the improvement of housing conditions, the requirements for the quality of lamps are also getting higher and higher. . As a kind of electrical products, lamps and lanterns are firstly safety, and secondly function and longevity. Safety issues are often not easily noticeable by consumers, and even cannot be discovered without professional equipment. They only know about accidents such as electric shocks and fires, but it is too late and consumers should pay attention to them.
Identify from the appearance of the lamp
Marking: From the above, we will see the lamp manufacturer and brand, model, rated voltage, etc., so as to judge whether this lamp meets our requirements.
Rated power: For example, the rated power of the lamp we buy is 60W, but if we install it as a 100W bulb, it is bound to damage the use of the lamp and easily cause electrical conduction.
Anti-shock device: You can look at the mark printed on the insulating layer outside the wire on the lamp when you buy it. The cross-sectional area of the wire should be at least 0.5mm².
Identify from the structure of the luminaire
The entrances and exits of the metal pipes through which the wires pass should have no sharp edges. Measures can be chamfered or sheathed on the metal parts to avoid cutting the wires, causing the metal parts to become live and causing the risk of electric shock. Portable lamps such as desk lamps and floor lamps should have a fixed wire device at the entrance of the power cord. Its function is to prevent the power cord from touching the heating element when the power cord is pushed back and forth, causing the insulated wire to heat or even melt, and it is also easy to cause conduction.
Identification from the accessories used on the luminaire
If an electronic ballast is used in the lamp, you should choose a lamp equipped with an electronic ballast for abnormal protection. The so-called abnormal protection refers to the protection given when a certain abnormal state occurs in the fluorescent circuit, so that the electronic ballast can still work normally. If the purchased lamp uses an inductive ballast, look at the mark on the ballast, there is a TW value (rated operating temperature). The higher the value, the longer the ballast will last.
Lamps
How to distinguish inferior LED lamps?
1. 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. 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. 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. 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. 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. 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.
Lamps
The above is the introduction of how to distinguish between good and bad lamps and how to distinguish low-quality LED lamps. I believe you should know more after reading it, and have mastered some skills. The content is for your reference only, and I hope to be able to choose the lamps and lanterns. help.
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