2.1 panel light aluminum frame The aluminum frame of th […]
2.1 panel light aluminum frame
The aluminum frame of the panel lamp is the main channel for LED heat dissipation. The appearance is simple and generous. The T6063 is used, the extrusion die has low mold opening cost and low processing cost. The stretched aluminum frame has a low IP rating, good surface texture and overall beauty.
2.2 aluminum frame link method
Detachable link corner
Link the two aluminum profiles with a right angle fitting and lock the corner screws for linking.
Advantages: free to disassemble
Disadvantages: The need for lock screws is labor-intensive, assembly is slow, and corner slots need to be reserved.
Non-removable welding
The two aluminum profiles are directly welded by an electric welder.
Advantages: The production speed is relatively high, and there is no need to reserve a corner groove.
Disadvantages: Need to configure a professional welding machine, and the requirements of the production staff is higher.
2.3 diffuser board
The light of the light guide plate is evenly distributed, and can also function as a fuzzy dot. The diffuser board generally uses Acrylic 2.0 sheet or PC material, almost the PS material, the cost of acrylic is lower and the light transmittance is slightly higher than PC, the acrylic anti-aging performance is weak, the price of PC is slightly expensive, but the anti-aging property Strong. The diffuser plate cannot see the dots after being mounted, and the light transmittance is about 90%. Acrylic transmittance is 92%, PC is 92%, and PS is about 90%.
2.4 light guide plate
The light guide plate uses an optical grade acrylic sheet, and then uses a high-tech material with extremely high reflectivity and no light absorption to print the light guide point on the bottom surface of the optical grade acrylic sheet by UV screen printing technology. The optical grade acrylic sheet is used to absorb the light from the lamp to stay on the surface of the optical grade acrylic sheet. When the light hits the respective light guiding points, the reflected light will diffuse to various angles, and then the reflection condition is broken out from the front surface of the light guide plate. The light guide plate can be uniformly illuminated by various light guiding points of different sizes and sizes. The purpose of the reflective sheet is to reflect the light exposed from the bottom surface back into the light guide plate to improve the efficiency of light use.
By shape
Flat plate: The light guide plate is rectangular in appearance from the light entrance.
Wedge plate: Also known as a sloping plate, it is a thin wedge-shaped (triangle) shape from the side where the light enters.
By outlet
Printed type: After the shape of the light guide plate is finished, the dots are printed on the reflective surface by printing, and are divided into IR and UV.
Non-printing type: The dot is directly formed on the reflecting surface when the light guide plate is formed. It is divided into chemical etching (Etching), precision mechanical characterization (V-cut), photolithography (Stamper), and internal diffusion.
Follow the light
Side entry light: Place the illuminator (lamp or LED) on the side of the light guide.
Direct type: Place the illuminator (lamp or LED) under the light guide.
Forming
Injection molding: The optical PMMA particles are injected into the mold by high temperature and high pressure using an injection molding machine.
Cutting and forming: Finishing the finished optical sheet PMMA through the cutting process
to sum up
The light guide plate refracts the side LED light through the mesh point to evenly lead the light from the front side, and the light guide plate is a key point for the quality control of the LED panel light. The dot design is not good, the overall light effect seen is very poor, the light is not uniform, and there will be darkness on both sides of the middle, or there may be bright bands in the light, or partial dark areas may be visible, or brightness may be inconsistent at different angles. To improve the light effect of the light guide plate is mainly based on the design of the mesh point, followed by the quality of the plate.
