LED panel light structure and components

Let us look at the composition and component analysis of the LED panel light :

Briefly introduce the composition of the LED panel light: aluminum frame (with fixed lamp body structure and heat dissipation), light guide plate (diffuse light evenly), diffuser plate (diffusion of light), LED light source (lighting), power supply ( It provides the low voltage and current required for the LED lamp bead, and the rear cover (heat dissipation, blocking foreign matter).

LED

Aluminum frame

2. Diffusion plate

The light of the light guide plate is evenly dispersed, and the function of shielding the mesh point is also used. The diffusion plate generally uses acrylic or 2.0 material, and the cost of the acrylic is lower and the light transmittance is slightly higher than that of the PC. The acrylic is brittle and resistant to aging. The performance is weak, the price of the PC is slightly expensive, but the anti-aging performance is strong. The diffuser plate cannot see the dots after being mounted, and the light transmittance is about 90%. Acrylic light transmittance is 92%, PC is 88%. You can choose the diffuser material according to your needs, generally use acrylic materials.

3. Light guide plate

The side LED light is deflected by the dot refraction to change the angle of the light. The light guide plate is the heart of the LED panel light. The dot design is very important. The dot design is not good, and the overall light effect seen is very poor. Generally, it will appear.

3.1. The middle is bright, both sides are dark;

3.2. There are bright edges on the light side and dark in the middle;

3.3. Standing at different angles, the overall brightness is inconsistent;

3.4. The local dark area is obvious;

The light effect of the light guide plate is very large in the design of the dot, followed by the selection of the plate, but it is also wrong to blindly pursue the brand plate. As long as the test light transmittance is high, there is no problem, in fact, it can be.

4. Rear cover

Sealing the lamp body, the dust-like imitation weight will prevent the dark spots caused by the accumulation of garbage in the lamp body, and it can play a little heat dissipation.

5.LED light source

LED lamp beads (lighting), usually led light bulbs use 3528, Others use 3014 and 5050. Is the current LED lamp bead used for LED panel lights? In fact, it is mainly based on the manufacturer's overall lamp design (such as circuit, heat dissipation, power supply, etc.) and the quality of the light guide plate.

6. Drive power

Lamp driver - there are currently 2 power modes

6.1. Direct use of cross-current power supply (this mode is highly efficient, PF value is up to 0.95, cost-effective)

6.2. Constant pressure belt cross flow mode (stable performance, but low efficiency, high cost)

The general use of this mode is designed for customers who require certification, because the luminaire is a low-voltage luminaire with 24V input, no need to make safety regulations, and can be shipped to each shelf directly using a safety power supply.

1.27mm Pitch

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