There is no "price war" in the article, and one can make a LED light belt.

The modern owner pays attention to the decoration effect of the whole home, and the lamps and lanterns are used as the home lighting products. At the same time, it plays an important role in the decoration of the living room. The colorful LED lights are very popular with the modern owners. The owners can choose the color of the light belt according to their own preferences, and create different home effects. Many owners are not very aware of the light belt, what is the cause of the light belt fever? How should the light belt be installed? What do you need to pay attention to when the light belt is repaired?

One, LED lamp belt specifications and features

The routine has round second line, round three line, flat three line, flat four line and so on.

The color is red, green, blue, yellow, white, colorful and so on.

Diameter: 10mm---16mm.

Characteristics:

1, soft, can curl like a wire.

2. It can be cut and extended.

3, the light bulb and the circuit are completely covered in the flexible plastic, the insulation, the waterproof performance is good, and the use is safe.

4. The weather resistance is strong.

5. It is not easy to break and use long life.

6, easy to make graphics, characters, and so on; it has been widely used in buildings, bridges, roads, gardens, courtyards, floors, ceilings, furniture, cars, ponds, water, advertising, signs, signs and so on.

Two, LED lamp belt installation method

1. Indoor installation:

When the LED lamp is used for interior decoration, the installation is very simple because it does not have to withstand the wind and rain. Each LED lamp belt behind the sticky 3M double-sided adhesive, installation can directly tear off the surface of the 3M adhesive surface sticker, and then the lamp is fixed in the need to install the place, with the hand flat on the good. As for some places that need a corner or how to do it? Very simple, the LED light belt is a series of 3 LED as a series of series parallel circuit structure, every 3 LED can be cut alone.

2. Outdoor installation:

Outdoor installation will be subjected to wind and rain. If 3M glue is used to fix it, a long time will cause the 3M stickiness to be reduced and the LED lamp will fall off. To consolidate the waterproof effect of the connection point.

3. Power connection method:

LED lamp with a general voltage of DC 12V, so the need to use a switching power supply, the size of the power supply depending on the power and connection length of the LED lamp. If you do not want to control each LED lamp with a power supply, you can buy a large power switch power supply to make the total power supply, and then all the LED lights are connected in parallel (the wire is not enough to be extended), and the power supply is unified by the total switch power supply. Such benefits can be centralized control, the inconvenient place is not to realize the lighting effect and switch control of a single LED light belt, which way can be measured by itself.

4. The connection mode of the controller:

The LED and RGB full color lamps need to use the controller to realize the variable effect. The control distance of each controller is different. In general, the control distance of the simple controller is 10 to 15 meters, the control distance of the remote control controller is 15 to 20 meters, and the maximum length can be controlled to the distance of 30 meters. If the connection distance of the LED lamp belt is longer, and the controller can't control the long light band, then the power amplifier is used to divide.

5, pay attention to the connection distance of the LED lamp belt:

Generally speaking, the 3528 series of LED lights, the longest connection distance of 20 meters, 5050 series of LED lights, the longest connection distance of 15 meters. If the connection distance is exceeded, the LED light belt is very easy to heat, and the service life of the LED lamp belt will be affected in the use process. Therefore, the installation must be installed in accordance with the requirements of the manufacturer, and avoid the LED lamp with overload operation.

Three, LED lights with attention

1, the requirements for brightness are different for different occasions and different products for LED luminance. For example, if the LED jewelry desk lamp is placed in some large shopping malls, we have to be attractive for a higher brightness, and the same decoration is also divided into different products such as the LED lamp and the LED seven color lamp belt.

2, antistatic ability: antistatic ability of strong anti static LED, long life, but the price will be a little higher. Generally, antistatic is better than 700V.

3, the wavelength and color temperature consistent LED, the color will be the same, this large volume combination of lamps and lanterns is particularly important. Do not have too much color difference in the same lamp.

4, the leakage current is the current of LED reverse conduction, we recommend using a small leakage current of a small point of the LED product.

5, waterproof ability, for outdoor and indoor LED lights are not the same.

6, LED luminescence angle to LED lamps and lanterns great impact on different lamps and lanterns, such as LED fluorescent lamp, we suggest to use 140-170 degrees. The rest of us are not here to explain in detail.

7, ED chip determines the core quality of LED, a lot of LED chip brands, there are foreign brands (such as CREE, Japan, etc.), also in Taiwan, China (such as gallium, crystal, etc.). Different brand prices are also far apart.

8, the size of the LED chip also determines the quality and brightness of LED. We also choose a larger chip as far as we choose, but the price is also different.

Four, the 2 causes of heating in LED lamp

1, line design problem: the most commonly used specifications of LED lamp are 12V and 24V two kinds of voltage, 12V is 3 series parallel structure, 24V is 6 series parallel structure. Because the LED light belt is to be connected to use, how long each lamp can be connected, and the width of the circuit and the thickness of the copper foil at the time of design. Because the current intensity per unit area is related to the cross section of the line, if the wiring is not taken into account when the connection length exceeds the current that the line can bear, the light belt will heat over the current, and at the same time, the service life of the LED is also reduced.

2, production process problem: because the LED lamp is a series parallel structure, so when a circuit has a short circuit, it will cause the other LED voltage to rise in the same group, the brightness of the LED will increase, and the corresponding calorific value will rise as well. The most obvious is that in the 5050 lamp belt, when the 5050 lamp has short circuit in any of the chip circuits, the current of the short circuit will double, that is, the 20mA becomes 40mA, the brightness of the lamp will become bright, but at the same time the amount of heat will increase, and it will burn the PCB in a few minutes. However, this problem is relatively obscure, generally not much to pay attention to, because the short circuit does not affect the normal light of the lamp, if the staff in charge of testing only pay attention to whether the LED is luminous, but not to check the brightness of the abnormal, or do not do the appearance inspection, only do electrical testing, often ignore this problem, this is also a problem. It's why many manufacturers of LED lights always meet customers who complain that products are hot but can't find the reason.

The solution:

1. Line design:

The circuit is as wide as possible, and the distance between the lines is 0.5mm enough, and the rest of the space is best to be full. The thickness of copper foil is not in violation of the customer's requirement for the total thickness of the PCB. The thickness of the copper foil is 1~1.5 OZ.

2. Production process:

A, when printing the solder paste, try not to have tin phenomenon between the plates, so as to avoid short circuiting caused by bad printing.

Avoid short circuit when B or patch.

C, check the patch position before reflux;

D, reflux after the appearance of the first check, to ensure that the lamp has no short circuited phenomenon after an electrical survey, check when the review of LED light after there is no abnormal bright or abnormal dark phenomenon.

Five, LED light belt should be paid attention to in maintenance

1, anti static: because LED is an electrostatic sensitive element, if the maintenance of LED lamp belt does not do anti static measures, it will burn out LED, causing waste. It is important to note that the soldering iron must be used as an antistatic soldering iron, and the maintenance personnel must also do the anti static measures (such as wearing electrostatic rings and antistatic gloves etc.)

2, continuous high temperature: the two important parts of the LED lamp belt, LED and FPC, are all products that can not endure high temperature. If FPC continues high temperature or exceeds its temperature, the cover film of FPC will be bubbling, which directly causes the LED lamp to be scrapped. At the same time, LED can not endure high temperature. It will be burned at high temperature for a long time at high temperature. Therefore, the soldering iron used in the maintenance of the LED lamp must be used for the temperature control iron, and the temperature is limited to a range, so it is forbidden to change and set freely. In addition, even so, it is necessary to pay attention to the maintenance of the iron in the maintenance of the LED foot stop for more than 10 seconds, if more than that time, it is likely to burn the LED chip.

3, short circuit: a lot of LED light belt is bad because there is a short circuit in the foot, it is necessary to find out the real bad reason before maintenance. Otherwise, after changing the bad LED, it will continue to cause the LED's chip to be broken down by short circuit. So, before changing the new LED, we must first find out the real cause of the bad, the remedy to the case can be twice the result.

Six. The nine factors affecting the price of the lamp belt

When you buy a LED light belt, don't just pay attention to the price. We are now teaching you from the following aspects to the comprehensive assessment, in order to buy the best performance price LED lamp belt.

1, LED with the use of the chip: the chip has domestic and Taiwan chips, and import chips (including American chips, Japanese chips, German chips and so on). The chip is different and the price varies greatly. At present, the most expensive are American chips, followed by Japanese chips and German chips, with moderate prices in Taiwan chips. What chip does it use? What kind of effect is to be achieved? Before purchasing, you have to have a good idea.

2, LED package: resin packaging and silicone encapsulation. The price of the resin package is cheaper, because the heat dissipation is a little bad, and the others are the same. The silicon rubber package has good heat dissipation, so the price is a little more expensive than the resin package.

3, LED color consistency: at present, there are many packaging factories in China, large and small add up thousands of families, of course, there is the strength of the strength of the division. There are many small packaging plants, because there is no light splitter, so either the color separation, or the external hair, so the quality is very difficult to guarantee. No color separation of LED, its color consistency is poor, installed on the LED lights on the effect is not so good, of course, the price difference is also larger.

4, LED welding effect: two kinds of assembling and breaking up welding and machine welding, the manual welding is the use of the most original method for welding. In this way, the appearance of the product is unsightly (the size of welding spot is inconsistency, the flux of flux is more, the solder joint is not smooth, the LED package is ironed, etc.). Two is the poor electrostatic protection measures, many LED chips are broken through, causing the phenomenon of light or not bright.

Machine welding is different. Machine welding is welded by reflow welding. Not only the appearance of the product after welding is beautiful (the size of welding point is the same, welding).