LED pixel light is a lighting device that uses LED (light emitting diode) as a light source. Its working principle is based on the electroluminescence effect. Compared with traditional incandescent lamps and fluorescent lamps, LED pixel lamps have higher energy efficiency, longer service life and smaller size, so they have been widely used in various fields.
The working principle of LED pixel lights can be briefly summarized as the following steps:
1. Power supply: LED pixel lights need to be powered by a power supply to work properly. A DC power supply is usually used to transmit power to the LED lamp beads through wires.
2. LED lamp beads emit light: The core part of the LED pixel lamp is the LED lamp bead, which is made of semiconductor materials. When current passes through the LED lamp bead, the electrons in the semiconductor combine with holes to release energy and produce light. This process is called the electroluminescence effect.
3. Control circuit: In order to control the LED pixel light, a control circuit is usually required. The control circuit can adjust the size and direction of the current according to the input signal, thereby controlling the brightness and color of the LED lamp beads. Common control methods include pulse width modulation (PWM) and analog dimming.
4. Pixel control: LED pixel lights are usually composed of multiple LED lamp beads, and each LED lamp bead can be controlled independently. Through the control circuit, the brightness and color of each LED lamp bead can be accurately adjusted, thereby achieving pixel-level control. This pixel-level control allows LED pixel lights to have great flexibility and creativity in display and lighting.
5. Heat dissipation treatment: Since LED lamp beads generate heat during operation, heat dissipation treatment is required to maintain the stability and lifespan of the LED pixel lamp. Common heat dissipation methods include heat sinks, fans, and heat dissipation glue.
In general, the working principle of LED pixel lights is to convert electrical energy into light energy through the electroluminescence effect, and adjust the brightness and color through control circuits and pixel control. It has the advantages of high efficiency, energy saving, long life and flexible controllability, so it has broad application prospects in the lighting field.
