The reasons for the reduction of the brightness of the lamp beads may involve multiple aspects, mainly including the following points:
1. Aging of lamp beads
Long-term use: After a period of use, the luminous efficiency of the lamp beads will gradually decrease. This is due to the aging of the luminous materials inside the lamp beads over time. This aging process will cause the brightness of the lamp beads to gradually decrease.
Heating effect: The lamp beads will generate heat when working. Long-term high-temperature operation will accelerate the aging process of the lamp beads and further reduce their brightness.
2. Power supply problem
Reduced supply voltage: If the supply voltage is unstable or lower than the normal working voltage of the lamp beads, the brightness of the lamp beads will be affected and the brightness will decrease.
Driver failure: LED lamp beads need to work at low DC voltage, while the daily mains electricity is high AC voltage. Therefore, a device called "LED constant current drive power supply" is needed to convert the voltage. If the driver fails, such as internal component damage or parameter mismatch, it may cause the output voltage to be unstable, which in turn affects the brightness of the lamp beads.
3. Line connection problem
Poor connection: If the connection between the lamp beads and the power supply line is not tight or loose, it may cause signal transmission to be blocked, which in turn affects the brightness of the lamp beads.
Line damage: Line damage or aging may also lead to poor current transmission, making it impossible for the lamp beads to obtain enough current to maintain normal brightness.
4. Lamp bead quality problem
Low-quality lamp beads: If the quality of the lamp beads used is not high, their luminous efficiency and stability may be poor, and they are prone to insufficient brightness or rapid aging.
5. Other factors
Usage environment: Harsh usage environments such as humidity, high temperature or extremely low temperature may have an adverse effect on the brightness and life of the lamp beads.
Light source model and series-parallel form: Different models of light sources may have different luminous effects under the same current, and the series-parallel form of LED lamp beads will also affect the overall brightness.
For the above reasons, the following measures can be taken to try to solve the problem of reduced lamp bead brightness:
* Replace aging lamp beads or the entire light strip.
* Check and replace the faulty driver.
* Ensure that the power supply voltage is stable and meets the working requirements of the lamp beads.
* Check and repair line connection problems.
* Choose high-quality lamp beads and drivers to improve brightness and stability.
* Improve the use environment to reduce damage to the lamp beads.
Please note that if the above measures cannot solve the problem, it is recommended to consult a professional lighting repairman or manufacturer for further inspection and repair.