Kitchen LED panel lights are taken apart and repackaged as a whole, and the brightness is uneven: one side is very bright, facing to the right side.
In the process of assembling and disassembling, the light strip on the dim side (now seen) is installed obliquely, without facing the light guide plate, so that the light emitted by the lamp beads cannot spread to the light guide plate. Then, go ahead, and you will come to the glowing area of the opposite light strip, so there is a feeling that the light is gradually increasing.
The dimming of the brightness of LED panel lamps is usually caused by the decay of LED light. LED is a constant current element, its current can not exceed the rated value. In order to increase the brightness of the LED lamp, the current of the LED is generally larger, so that the LED will age ahead of time due to overheating after a period of use, resulting in a decrease in the brightness of the lamp.
The drive is damaged. LED lamp beads are required to work at low DC voltage (below 20V), but our usual city electricity is AC high voltage (AC 220V). To turn city electricity into lamp beads, you need a device called “LED constant current drive power”. LED burns.
For your analysis, there are several reasons for sudden darkening. Is the driver resistive or capacitive? If the very cheap LED flat panel lamp is resistance-capacitance, this resistance-capacitance-driven lamps and lanterns are very cheap and will change their brightness with the change of current. Whether the lamp bead is faded, if it is much darker than the original, it is the light decay.
We use the water pump to pump, and the LED drive device is the water pump. The decrease of the pump capacity results in the decrease of the outlet pressure and the dimming of the lighting.
What is the selection and purchase method of led smallpox flat lamp? How to install flat panel lights?
1. How to install the flat lamp (1) when installing the living room flat lamp in the masonry structure, you should use pre-embedded bolts, or fixed with expansion bolts, nylon plugs or plastic plugs; do not use wooden wedges. And the bearing capacity of the above fixed parts should match the weight of the living room panel lamp.
2, the first method commonly used office, is the simplest and most common installation method: first, take a ceiling, put the driver of the LED panel light on the next ceiling, connect the power cord, and then put the board light on it. The second method is hoisting, to use the cable.
3, led flat panel lamp installation method 1 there are embedded LED flat panel lamp, ceiling type, hanging three installation methods, the first to determine which installation mode is. 2, prepare sharp nose pliers, welding, AB glue, multimeter, etc.
4. The power factor of led flat panel lamp the power factor of Led flat panel lamp is high or low, which can be tested by “power factor meter”! The low power factor indicates that the poor design of the drive power supply and circuit will greatly reduce the service life of lighting. In general, the power factor of led flat panel lamps is required to be 0.85 or higher, and the power factor is less than 0.5.
5. Ask the shop assistant to take out the new flat lights for our inspection. After the inspection, there is no problem before we can rest assured to buy. There must be nothing wrong with such a safe way of purchase, as long as we pay more attention to it.
6. Opp led flat panel lamp-the installation method of Opp led flat panel lamp the first method is the simplest and most common installation method: first, take a ceiling, put the driver of the LED panel lamp on the next ceiling, connect the power cord, and then put the board light on it. The second method is hoisting, to use the cable.
Diagram of how to install flat panel lamp
1. The common installation methods of led flat panel lamps are embedded, ceiling and hanging type. First of all, what kind of installation mode should be determined according to the installation location and the style of the lamps and lanterns. Led panel lamp installation step 2 get the installation tools ready, such as sharp-nosed pliers, solder, AB glue, multimeter and so on.
2, embedded installation method: suitable for integrated ceiling installation, this installation method is often used in offices, stores, kitchens and other occasions, but also the most common installation method, first remove a ceiling. The following figure connects the adapter of the flat panel lamp to the wire. As shown in the picture, the male and female interfaces of the flat lights can be docked.
3, led flat panel lamp installation method 1 there are embedded LED flat panel lamp, ceiling type, hanging three installation methods, the first to determine which installation mode is. 2, prepare sharp nose pliers, welding, AB glue, multimeter, etc.
4. There are three installation methods of LED flat panel lamp: embedded, ceiling and hanging, so we must first determine what kind of installation method. Prepare sharp-nosed pliers, solder, AB glue, multimeter, etc.
5, the first method commonly used office, is the simplest and most common installation method: first, take a ceiling, put the driver of the LED panel light on the next ceiling, connect the power cord, and then put the upper board light on it. The second method is hoisting, to use the cable.
6. installation method: ceiling lamp: it can be fixed directly with screws. Embedded LED lamp: step 1: open the hole, and then jam the lamp buckle. Step 2: because the specific situation of each lamp is different. Next, the specific operation should be carried out in accordance with the instructions attached to the LED lamp.
What are the parts of Led lamps and lanterns
1, are composed of chassis, cover, power supply, lights and other four parts. Led crystal ceiling lamp beads usually use 1W LED lamp beads for those whose power is greater than 30W, and those less than 30W mostly use low power LED lamp beads (for example, 3020, 3014, 3528, etc.).
2. The heart of LED is a semiconductor wafer, one end of which is attached to a bracket, one end is negative, and the other end is connected to the positive pole of power supply, so that the whole wafer is encapsulated by epoxy resin. LED lamp is composed of semiconductor material chip, white glue, circuit board, epoxy resin, core wire and shell.
3, LED strip ceiling lamp, generally composed of LED strip and power adapter, while the power adapter is usually a switching power supply plus a constant current integrated circuit (of course, there are resistors, capacitors, semiconductor components, etc.).
4, in fact, the structure of LED lamps is more or less the same, basically just like the LED bulb lamp introduced above, LED lamp accessories can be divided into the following parts: LED chip, lens, circuit board, lampshade, lamp rack, drive power supply, radiator.
5. At present, the most popular ceiling lamp on the market is LED ceiling lamp, which is often used in various places such as home, office, entertainment and so on. Ceiling lamp is a kind of lamp, as the name implies, because the top of the lamp is relatively flat, the bottom is completely attached to the roof during installation, so it is called ceiling lamp.
6. Iron ceiling lamp the lamp body of iron ceiling lamp is generally composed of ferroalloy and resin, the color is mainly warm, and most of the lampshade is generally drawn by hand, which is more suitable for European home.
