What are the functions of each component of the Led panel light structure?

There is a famous saying that goes well: Optics is the soul of the soul..

So the question is, what do we use to shape the soul of Led panel light? What are the advantages and disadvantages of the common optical devices of Led panel light? Next, Xinjie, a professional Led panel light manufacturer, will introduce in detail the structure of Led panel light. The function of the component.

Led panel light chip and power driver

The light source of the Led panel light is a chip, which is a solid-state semiconductor device, also known as the Led panel light light-emitting chip, and is the core component of the Led panel light. With the rapid development of Led panel light technology and the gradual improvement of the light effect of Led panel light, the application of Led panel light will become more and more extensive. Whether it is a high-power Led panel light chip for accent lighting and overall lighting, or a low-power Led panel light chip for decorative lighting and some simple auxiliary lighting, the luminous efficiency of Led panel light has achieved a huge breakthrough.

Chips of different brands have great differences in price and quality. So why choose a good chip?

Because this determines whether a lamp can have the advantages of high luminous efficiency, high color rendering index, and low heat generation. Good lights are usually expensive in chips. And inferior chips will inevitably affect the lifespan. If your newly purchased lights always need to be "replaced once a year", it means that the chip is not good.

Led panel light drive power

The Led panel light drive power supply is a power converter that converts the power supply into a specific voltage and current to drive the Led panel light to emit light. Usually: the input of the Led panel light drive power supply includes high-voltage power frequency AC (that is, 220V mains), low-voltage DC, high-voltage DC, low-voltage high-frequency AC (such as the output of electronic transformers), etc.

The driving power is also the key factor that dominates the lifespan. After many lamps are scrapped, it seems that "the reason cannot be found" in the lamp body itself, but in fact the problem may lie in the driving power. The electrolyte inside the poor-quality drive power supply will continue to volatilize in large quantities under the influence of heat energy over time, causing premature aging or even damage.

At present, the driving power supply of the mainstream Led panel light lighting on the market has broken through this barrier very well. They are all external power supplies (not built-in power supplies), separated from the lamp body, high temperature resistant, and the electrolysis is 105 ℃ electrolysis (can be used at 105 ℃ 8,000 hours of continuous work at a certain temperature), and its lifespan is 4 times that of ordinary power supplies. With such a reliable driving power supply, there is really no need to worry about the lamps you buy breaking down quickly.

Optical structure - lens, reflector and heat dissipation structure

Led panel light lens

The Led panel light lens is divided into a primary lens and a secondary lens. The "lens" we generally refer to refers to the secondary lens by default, that is, it is in addition to and closely combined with light sources such as Led panel light lamp beads and COB. . According to different requirements, different lenses can be used to achieve the desired optical effect.

Now the main material of Led panel light lens on the market is PMMA, which has good plasticity and high light transmittance (up to 93%). The disadvantage is that the temperature resistance is relatively low, only about 90 degrees. The main secondary lens currently on the market is generally designed with total internal reflection (TIR for short). The overlapping of two kinds of light can get perfect light utilization and beautiful spot effect. The efficiency of TIR lens can reach more than 90%, and it is mainly used in small angles (beam angle<60°), such as spotlights and ceiling lights.

Led panel light reflector

Usually, the light emitting angle of the Led panel light source is about 120°. In order to achieve the desired optical effect, sometimes a reflector is used to control the illumination distance, illumination area, and spot effect.

Through computer modeling, the luminous angle of the light source of the reflector and the spatial structure of the Led panel light reflector are simulated, the refraction trajectory of the light is traced, and the technical parameters of the curvature of the light cup are adjusted to achieve the best light intensity distribution of the flashlight reflector and the effect of the lamp cup on each The functional requirements of this kind of beam angle greatly improve the light effect of the Led panel light reflector and reduce the possibility of astigmatism and glare.

Reflector material

Metal reflector cup: It needs to be stamped and polished, and has deformation memory. The advantages are low cost and temperature resistance, and it is often used for low-grade lighting requirements.

Plastic reflector: one-time demoulding, high optical precision, no deformation memory, moderate cost, often used in medium and high-end lighting requirements where the temperature is not too high.

Led panel light radiator:

In the process of being continuously turned on, a large amount of heat will be generated. If it is not discharged in time, the heat energy accumulated in the lamp body will damage the Led panel light chip and even various components, causing light decay and shortening the service life. This is the task that the radiator needs to solve - timely heat removal.

At present, the radiators with better heat dissipation effect on the market are mainly "die-casting" (that is, radiators pressed out of molds), and cold-forged integrated radiators (made of cold-pressed aluminum with higher pressure, which is the current new generation of radiators). premium cooling technology).

This improves the heat dissipation performance by 30% compared with the traditional split radiator (the seamless connection between the aluminum substrate and the radiator is realized, and the thermal conductivity is greatly improved), which can ensure a longer life of the Led panel light.

Secondly, under certain environmental conditions, the heat dissipation thermal resistance mainly depends on the heat dissipation area of the radiator and the radiation coefficient of the surface material of the radiator. The larger the heat dissipation area, the higher the radiation coefficient, the smaller the heat dissipation thermal resistance, and the better the heat dissipation effect.

Through the above content, I believe everyone has a better understanding of Led panel light. For more information about Led panel light, please click below to read:

University questions hidden in Led panel light

Five advantages of LED panel light!