1. The arrangement of lamp beads, the number of lamp beads, the arrangement of lamp beads and the number of lamps are insufficient.
2. The selection of lamp shell is the most common, mainly due to the distance between the lamp bead and the PC cover, and the sunken shape of the lamp plate, which gives a good light.
3. In the production process, the voltage of each lamp bead is different and mixed together, which will also cause this situation.
4. This problem occurs when the new light tube is just assembled. It is because the number of LEDs is too small, the density is insufficient, and the light is uneven with dark areas; The LED light attenuation is serious when it is used for a period of time.
5. This may be the reason: the light flux of the lamp beads is too jumpy when using the lamp boards that are connected first and then connected. You can remove the light and dark lamp beads where there is a dark area for testing to see if the light flux of the three lamp beads corresponding to the dark area is lower than that of the lamp beads on both sides.
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