Introduction aux caractéristiques structurelles des lampes LED à écran plat

With the improvement of LED chip luminous efficiency, the continuous improvement of packaging technology, and the development of LED lamp heat dissipation technology, LED light source is rapidly expanding in the field of lighting, and LED flat lamp industry is booming.

LED flat panel lamp has the advantages of uniform light, low glare and simple installation. It has a good market prospect and leads the new trend of modern interior lighting. However, the quality of LED flat panel lamps on the market is uneven. Some manufacturers ignore product quality, lower prices, malicious competition, seriously affecting the healthy development of the industry.

The following is the structure of LED flat lamp features!

Compared with other lamps, LED flat lamp has unique structure. It is mainly composed of light source, light guide plate, diffuser, reflective paper and driving power supply. Compared with other lamps, LED backlight products have more similar structures such as light guide plate, diffuser and reflective paper.

One. LED light source

When LED flat lamp manufacturers use LED light source, they are basically SMD chip series, such as 3528, 3014, etc. The market of LED flat panel lamp manufacturers is dynamic. The manufacturer will choose the light source that meets the design requirements according to the actual needs of customers. The selection of LED light source is very important for the improvement of product performance, and it is one of the important factors to improve the quality of LED flat lamp.

2、 Diffusion plate

The main function of the diffusion plate is to output the light of the light guide plate evenly and make the light distribution more uniform. When the light is emitted to the diffusion point, the reflected light will diffuse to all angles and then be emitted from the front of the light guide plate. The light guide plate adopts various dense and different diffusion points to make the light emitting uniform and improve the brightness of the light guide plate. Can also play the role of fuzzy points.

3、 Light guide plate

The function of the light guide plate is to convert the light from the LED point light source into the surface light source through the optical technology, and make the side LED light refract through the point, so that the light can be evenly exported from the front. At present, the printing light guide plate is mainly used. The quality of the light guide plate will directly affect the brightness and uniformity of the product, which requires good light transmission performance.

Light guide plate is the key to the quality control of LED flat panel lamp. If the dot design is not good, the overall light efficiency will be poor, light output will be uneven. There will also be dark areas on both sides of the middle light, bright bands at the light inlet, visible local dark areas, and different brightness angles. In order to improve the light efficiency of the light guide plate, we should mainly rely on the design of the dot, followed by the quality of the plate, and select the qualified high transmittance plate

4、 Back cover plate

The main function is sealed LED flat lamp. Generally use aluminum plate, can also play the role of heat dissipation.

5、 Reflective paper

The function of reflective paper is to fully reflect the light overflowing under the light guide plate, so as to make full use of the light emitted by LED. Choose reflective paper with reflectivity close to 100% as far as possible to maximize the use of light and improve the output brightness of LED flat panel lamp, generally rw250.

6、 Driving force

At present, there are two kinds of LED driving power supply, one is high efficiency, PF value of 0.95, cost-effective constant current power supply; The other is constant voltage and constant current power supply with stable performance, low efficiency and high cost. Generally speaking, the power supply is mainly used for export, and the other party has certification requirements. In fact, it is safe to use constant current power supply at home, because it is difficult for users to access the power supply, and the lamp itself uses a safe low voltage.