This design not only saves the packaging cost, but also improves the reliability of the product.
In the face of the water ingress of the display screen, what is needed is the word “as soon as possible”. Use the shortest effective method to deal with it.
LEDs will generate heat during operation. Excessive temperature will affect the attenuation speed and stability of the LED. Therefore, the heat dissipation design of the PCB board and the ventilation and heat dissipation design of the box will affect the performance of the LED.