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LED Panel Light Illumination Principle

LED Panel Light Illumination Principle

Jul 20, 2019

At present, LED panel lights are becoming more and more popular in various fields as a common indoor lighting tool. Compared with other lamps, panel lights quickly occupy the market with their absolute advantages such as beauty, low consumption, long life, economy and practicality, and are highly popular among consumers. However, many people may not know about the principle of the illumination of the panel lamp. The following is a brief description of the principle of the illumination of the panel lamp.


The principle of illumination of LED panel lights is completely different from other lamps. The principle of illumination of LED panel lamps is caused by the combination of electrons and holes.


First, three options for driving the power supply:

1. Isolated power supply: The performance of this scheme is good, and the safety and constant current performance of the integrated circuit are better, but the cost is higher.

2. Non-isolated power supply: The cost of this solution is moderate, and it is also the constant current of the IC, but there are hidden dangers of breakdown and leakage. Therefore, the external result of the luminaire must be an insulator.

3. Resistor Capacitor Decompression: This solution is one of the three schemes with the lowest cost, the simplest method and the least device. Therefore, the cost is relatively low, mainly suitable for the configuration of lamps below 3W, there are also hidden dangers of breakdown and leakage, and a better insulated casing is needed.


Second, LED panel light commonly used LED light source

Due to its small size, high luminous efficiency, good power, easy control of light and heat dissipation, the LED panel light source has grown from the earliest 3,528 to the mainstream SMD4014.


4014 lamp bead parameters:

Specification size: 4.0*1.4*0.8mm

Current: 75mA, 60mA, 30mA

Power: 0.225W, 0.2W

Chip: 10:23 mile, 10:30 cc

Voltage: 3.0-3.4V

Thermal resistance: 50K/W

Brightness: 20-26lm

Color temperature: 正白 6000-6500K, natural white 4000-4500K, warm white 3000-3500K

Color rendering: no less than Pa70

Pulsating current: 200mA

Maximum reverse current: 10uA