LED panel lights are very popular with people because of their energy saving, environmental protection, long life, good lighting and other characteristics. They are almost everywhere in homes, offices, hospitals, and shopping malls, but people often use them improperly in their daily life. Longevity", so what are the common reasons for the damage of LED panel lights? LED lighting manufacturer Yenhua Optoelectronics will tell you!
1. The power supply voltage suddenly rises, surges increase, and the voltage is unstable, causing the LED panel lights to be burned.
2. The short circuit of a component or printed line or other wires in the circuit forms a partial short circuit of the LED power supply path, which increases the voltage in this place, and the solder joints are soldered or loose.
3. Some LED panel lights are damaged due to their own quality and thus form a short circuit. Its original voltage drop is transferred to other LEDs, the internal resistance of the LED changes, and the voltage on the LED is uneven.
4. The temperature in the lamp is too high, which makes the characteristics of the LED worse; the local temperature inside the lamp rises too fast; the temperature is too high during soldering or immersion tin.
5. Water has entered the interior of the lamp, and the water is conductive. Hot air builds up in closed lamps to form water vapor or fog.
6. In the light source test, the light source is turned on and off quickly, and the charge discharge between the electrodes (that is, it fades out when it is turned off).
7. Erosion of plate washing water and ultrasonic nanowave when washing plates.
8. Live operation; all fixtures do anti-static work; keep the temperature and humidity of the environment.
Common fault performance of led panel light
1. Darkness around
This phenomenon is often the problem of the light guide plate.
2. The light turns blue or yellow
1) Adjust the distance between the lamp bead and the light guide plate, or change 3T to 4T, because the refractive index of blue light and yellow light is different.
2) It may also be the problem of the lamp bead, replace the lamp bead.
3. The aluminum frame has large seams
4. There are bright spots and bright spots
5. Water ripples appear
This is caused by current pulsation, replace the power supply.
6. The measured value of luminous flux is low
Using distributed photometer, choose high-quality lamp beads
When PMMA is thermally expanded, the light may appear bluish or even dead when it is pressed against the lamp bead.