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How to Select Led Light Strips
Led light strip refers to the assembly of Led on strip FPC (flexible circuit board) or PCB hard board, which is named because its product shape is like a strip. Because of its long service life (generally the normal service life is 80000 ~ 100000 hours), and very energy-saving and green environmental protection, it has gradually emerged in various decoration industries.
㈠ Classification
㈡ Features
㈢ Reason for Not Llighting
㈣ How to Identify Quality
㈤ Attentions to Lighting
㈥ Wasoto Led Advantage
㈦ Led Light Main Features
㈧ Precautions for Installation of Led Light Band
㈠ Classification
Led lamp strips are generally divided into flexible Led lamp strips and led hard lamp strips.
① The flexible Led light bar is assembled with FPC as the assembly circuit board and chip Led, so that the thickness of the product is only 0.1cm, which does not occupy space; General specifications include 18 LEDs, 24 LEDs, 15 LEDs, 24 LEDs, 30 LEDs, etc. There are also 60cm, 80cm, etc. different users have different specifications. It can be cut at will or extended at will without affecting the luminescence. The FPC material is soft and can be bent, folded and wound arbitrarily. It can move and expand freely in three-dimensional space without breaking. It is suitable for irregular places and places with narrow space. Because it can be bent and wound arbitrarily, it is suitable for any combination of various patterns in advertising decoration.
② The LED hard light strip is an assembly circuit board made of PCB hard board. The Led can be assembled with patch Led or in-line led. Different components are used according to different needs. The advantage of hard light strip is that it is easy to fix, and it is convenient to process and install; The disadvantage is that it can not be bent at will and is not suitable for irregular places. There are 18 LEDs, 24 LEDs, 30 LEDs, 36 LEDs, 40 LEDs and many other specifications for patch LEDs for hard light strips; There are 18, 24, 36, 48 and other different specifications with in-line led. There are both front and side. The light emitting on the side is also called the Great Wall light bar.
㈡ Features
① Soft and can curl freely.
② You can cut and extend.
③ The light bulb and passage are completely covered in flexible plastic, with good insulation and waterproof functions and safe use.
④ Strong weather resistance.
⑤ It is not easy to break and has a long service life.
⑥ Easy to manufacture graphics, text and other shapes; It has been widely used to decorate and illuminate buildings, bridges, roads, gardens, courtyards, strata, false flower boards, furniture, buses, lakes, underwater, posters, plasters, signs, etc.
㈢ Reason for Not Llighting
① The packaging protection of LED flexible lamp belt is not perfect, resulting in the impact and damage of lamp beads during transportation.
② The solder joint of LED flexible lamp belt has the phenomenon of false welding. The vibration during transportation causes the solder joint to fall off and the lamp belt does not light up.
③ The amount of soldering tin of LED flexible lamp belt is small, and the solder joint is easy to fall off
④ The solder quality of LED flexible lamp belt is poor, and the solder joints of LED flexible lamp belt are easy to crack and fall off during bending
⑤ The bending angle of the LED flexible lamp belt is too large during installation, resulting in the separation of the solder joint of the LED flexible lamp belt from the copper foil, resulting in no lighting
⑥ During the installation of LED flexible lamp belt, the product is excessively squeezed, resulting in damage to the chip of LED flexible lamp belt or deformation and falling off of solder joint
⑦ The solder resist layer of LED flexible lamp with circuit board is too thick, so the solder and circuit board can not be completely integrated during welding, which is also a phenomenon of false welding.
⑧ The LED flexible lamp belt shall not be twisted during installation. If it is twisted, the solder joint of the LED flexible lamp belt will fall off and will not light up.
⑨ Static electricity burns out, because LED is an electrostatic sensitive element. If no electrostatic protection measures are taken, the chip will burn out
㈣ How to Identify Quality
The LED light belt market is mixed, and the prices of products from regular manufacturers and Shanzhai factories are very different. If we identify the quality of LED light band from professional technology, I'm afraid many customers don't have this ability. But we can make a preliminary identification from the simple appearance, and we can basically distinguish the quality.
It can be identified from the following aspects:
⑴ Look at the solder joint. The LED lamp belt produced by the regular LED lamp belt manufacturer is produced by SMT patch process, solder paste and reflow soldering. Therefore, the solder joint on the LED lamp belt is relatively smooth and the amount of solder is not much. The solder joint extends from the FPC pad to the LED electrode in an arc shape.
⑵ Look at FPC quality. FPC is divided into copper clad and calendered copper. The copper foil of copper clad plate is convex. If you look closely, you can see from the connection between pad and FPC. Calendered copper is closely connected with FPC, which can be bent arbitrarily without pad falling off. If the copper clad plate is bent too much, the pad will fall off, and too high temperature during maintenance will also cause the pad to fall off.
⑶ Look at the cleanliness of the LED strip surface. The LED lamp belt produced by SMT process has very good surface cleanliness and can't see any impurities and stains. The fake LED light strip produced by hand welding process will leave stains and cleaning marks on its surface no matter how it is cleaned.
⑷ Look at the packaging. The regular LED light belt will be packaged in anti-static reel, 5 meters or 10 meters, and the outside of the package will be sealed with anti-static and moisture-proof packaging bag. The fake version of LED light belt adopts recycled reel without anti-static and moisture-proof packaging bag. If you look at the reel carefully, you can see that there are traces and scratches left when removing the label.
⑸ Look at the label. There will be printed labels on the regular LED light belt packaging bag and reel, not printed labels.
⑹ See the attachment. The regular LED light belt will be attached with the use instructions and light belt specifications in the packing box, and will also be equipped with LED light belt connector or card holder; The fake version of LED light belt packaging box does not have these accessories, because some manufacturers can save after all.
㈤ Attentions to Lighting
① The requirements for brightness are different for different occasions and different products. For example, if the LED jewelry cabinet table lamp is placed in some large shopping malls, we need higher brightness to be attractive, and the same decorative function is also divided into led spotlights, LED colorful light belts and other different products.
② Antistatic ability: LED with strong antistatic ability has long service life, but the price will be higher. Generally, the antistatic voltage should be higher than 700V.
③ Led with the same wavelength and color temperature will have the same color. This lamp combined in large quantities is particularly important. Do not produce too much color difference in the same lamp.
④ The leakage current is the current when the LED is conducting in reverse. We recommend using LED products with smaller leakage current.
⑤ Waterproof capacity, the requirements for outdoor and indoor LED lamps are different.
⑥ LED lighting angle has a great impact on LED lamps and requires great requirements for different lamps. For example, LED fluorescent lamps, we recommend 140-170 degrees. The others are not explained in detail here.
⑦ LED chip determines LED core quality, LED chip brand is very many, has foreign brand, also has Taiwan of China. The prices of different brands are also very different.
⑧ The LED chip size also determines the LED quality and brightness. We also try to choose a larger chip when choosing, but the price will be higher accordingly.
㈥ Wasoto Led Advantage
① Soft and curly like a wire.
② Able to cut and extend.
③ The bulb and circuit are completely covered in flexible plastic, with good insulation and waterproof performance and safe use.
④ Strong weather resistance.
⑤ It is not easy to crack and has long service life.
⑥ Easy to make graphics, text and other shapes; It has been widely used in decoration and lighting of buildings, bridges, roads, gardens, courtyards, floors, ceilings, furniture, cars, ponds, underwater, advertisements, signboards, signs, etc.
㈦ Led Light Main Features
① Line design
The most common specifications of low-voltage LED lamp belt are 12V and 24V. 12V is a 3-Series multi-channel parallel structure, 24V is a 6-series and multi-channel parallel structure. Since LED lamp strips are to be connected for use, the specific length of each lamp strip can be connected is closely related to the width of the line and the thickness of copper foil in the design. Because the current intensity that can be borne per unit area is related to the cross-sectional area of the line. If this is not taken into account during wiring, when the connection length exceeds the current that the line can bear, the lamp belt will heat due to overcurrent, which will not only damage the circuit board, but also reduce the service life of the LED.
② Production process
Because the LED light band is a series parallel structure, when a short circuit occurs in a group of circuits, the voltage of other LEDs in the same group will increase, the brightness of the LED will increase, and the corresponding heating capacity will also increase. The most obvious thing is that in the 5050 lamp belt, when there is a short circuit in any chip circuit of the 5050 lamp belt, the current of the lamp bead that causes the short circuit will double, that is, 20mA becomes 40mA, and the brightness of the lamp bead will become very bright.
㈧ What are the precautions for the installation of LED light band
Precautions for installation of LED lamp strip: wiring method of LED lamp strip the general voltage of LED lamp strip is DC 12V, so it is necessary to use switching power supply. The size of power supply is determined according to the power and connection length of LED lamp strip. The wiring of the single color 5050 patch LED light strip is to distinguish the positive and negative poles. Generally, we provide a welded power plug, which can be directly inserted into the light strip power supply we provide, and then all the LED light strips input power supplies are connected in parallel and uniformly powered by the main switch power supply. Precautions for the installation of LED lamp belt: the connection mode of the controller. The LED running lamp belt and RGB magic lamp belt need to use the controller to achieve the changing effect. When wiring.
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