LED panel light structure design
The structural components of the led panel light are shown in the figure as shown in the figure. The disadvantage of positive-emitting panel lights is that the thickness of the lamp is generally 3.5-5cm, and the side-emitting panel lights are generally between 8-12mm, which is much thicker than the side-emitting panel lights.
LED panel back light structure design
Back-emitting LED panel lights, also called front-emitting LED panel lights, are mainly composed of a heat sink frame, an aluminum back cover embedded with reflective film, LEDs, and a low-haze diffuser. LED constant current power supply and other parts are composed. The LED back light panel light is designed with the use of LED light-emitting angles and reasonable LED spacing. It is matched with the diffuser and the height of the lamp to achieve the ideal light mixing effect.
1. LED back light panel light board
There are two types of light-emitting panels. One is that the light bar is composed of multiple light bars, and the light boards are connected by electronic wires to form a whole to achieve a uniform light-emitting effect. The other is that the light board is a whole, that is, a whole board.
LED back-emitting panel lights are usually carried out in the whole board mode. Commonly used LED back light panel light specifications are 300mmx 1200mm or 600mm×600mm, and the power is 36W or 40W. The number of LED lights is 600, and the commonly used packages are 3528 and 2835.
2. At present, there is also a strip-shaped method, 600 lights are divided into 20, each with 30, so that the effect of the whole board can also be achieved. However, during installation, it takes more time. First, punch holes on the back panel, and then rive the LED strips with core nails. In this way, the whole board is formed, and then connect the LED strips with electronic wires, and finally lead out the two electronic wires "LED +" and "LED-" and connect them with the power output wire.
LED panel side light emitting structure design
Side-emitting led panel board light. The side-emitting LED panel light uses light guide plate technology to design the light guide plate mesh points according to the arrangement of the LED lamp plate lamp beads and the light emitting angle of the lamp beads, so that the light passes through the light guide plate to achieve the effect of uniform brightness.
1. The outer frame of the side-emitting led panel light is made of four aluminum strips spliced through L-shaped connectors. It takes 600mm×60 to add four 595 aluminum profiles to splice. If you want 1200mm×300mm, cut two pieces of 1195mm and two pieces of 295mm. material. The product has seams. The aluminum material factory is required to process the 45° cut angle of the aluminum material and chamfer it. It is also very important to pour a 1mm LED panel light to dissipate heat, and the same power
LED panel lights and lamp beads of the same quality, if the heat sink is not good, the lamp beads will work at high temperature, the light decay will be very large, and the life of the LED panel light will be reduced.
2. The light-transmitting part of the side-emitting LED panel light is composed of a diffuser, a light guide plate, and a reflective film. The most important thing is the quality of the light guide plate, and the light transmittance must be very good. The surface of the LED is directly close to the periphery of the light guide plate and is in the center position to make the most of the effective light.
3. The structure of the positive-emitting LED panel light is similar to that of the side-emitting LED panel light, except that the light is evenly distributed behind the acrylic plate and cannot be made very thin. The focal length of the light source and the light guide plate should not be too close. It is possible to see the particle light source, which affects the appearance. The solution is to increase the size of the entire lamp, so on the whole, the cost of side-emitting LED panel lights is higher. But the brightness is higher than that of side-emitting LED panel lights.
Shell processing technology requirements
The shell material is made of high-strength aluminum, and the surface is sprayed with anti-static thermoplastic, corrosion-resistant, oxygen-resistant, durable, and has a variety of appearance colors to choose from. Optical-grade diffuser and light guide plate better ensure the uniformity of light output and light output.> Using aluminum backplane as a heat dissipation platform, the heat dissipation effect is better. . The cleanliness of the workshop is high, the process control is not good, and the product rate is low (the king is caused by dust and the bright spot).
The installation distance-to-height ratio of LED flat panel luminaires for indoor general lighting should not be less than 1.1.
What is a light guide plate?
The light guide plate is made of optical grade acrylic or PC sheet, and the light guide dots are printed on the bottom surface of the optical grade acrylic and force sheet with UV same-plate printing technology. When the light hits each light guide point, the reflected light will be taken from all angles, and will be emitted from the front of the light guide plate after damage. Through a variety of sparse and dense light guide points of different sizes, the light guide plate emits uniform light.
>The light diffusion plate is a diffusion layer made of plastic substrates such as PMMA or PC and PET. When it encounters a medium (diffusion particle) with a different emissivity, it will undergo multi-angle and multi-directional refraction, reflection and scattering. Achieve light diffusion effect and provide a uniform surface light source
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The light guide plate, reflective oil black and reflective film in the side-emitting LED panel light are always at a relatively high temperature, which is easy to age and turn yellow, so that the light output rate is reduced, and the life of the side-emitting LED panel light is greatly reduced.
