How to choose panel light from Back-lit panel and direct-lit panel

As we all know, panel lights can be divided into direct light-emitting panel lights and side light-emitting panel lights.However what's the difference between a side-lit led panel light and a back-lit led panel light? Which type of panel lamp should you choose when choosing? Today, I will introduce to you the characteristics of side light-emitting panel lamp and straight light-emitting panel lamp.

What is the side light-emitting panel lamp and the straight light-emitting panel lamp.

The side light-emitting panel lamp mainly uses the light guide plate technology to design the light guide plate dot according to the arrangement of the led lamp beads and the luminous angle of the lamp beads, so that the light passes through the light guide plate to achieve the effect of brightness uniformity. The direct luminous panel lamp uses high brightness led as light source and adopts direct luminous light distribution design, which has the characteristics of high light efficiency, uniform light output, safety and reliability, low power consumption and long life.

Whether the side light-emitting panel lamp is better or direct light-emitting light can be seen from the following aspects:

1. Light effect. Compared with the side light-emitting panel lamp, the direct light-emitting panel light efficiency is high, the light emitted by the led light source shines down directly through the diffusion plate, and there is no other medium between the light source and the diffusion plate, so it will not propagate the light, and the lumen value of the whole lamp is also relatively high. On the other hand, the luminous direction of the side luminous panel lamp is not in the same direction as the luminous surface of the lamp, and the overall luminous efficiency is low.

2. Heat dissipation. The quality of heat dissipation will directly affect the life and light decay of lamps and lanterns. In the side light-emitting panel lamp and direct light-emitting panel lamp, the heat dissipation of the side light-emitting panel lamp is more ideal, the position of the led light source is different from the straight down type, the light source is attached to the outer bracket, and the outer bracket participates in the whole heat dissipation process, so as to solve the heat dissipation problem.

3. Weight. Compared with the direct light-emitting panel lamp, the position of the side-luminous LED light source is different from the straight-down type, the light source is attached to the outer bracket, and the outer bracket participates in the whole heat dissipation process, so as to solve the heat dissipation problem.

4. Cost. The cost of the side light-emitting flat panel lamp increases because of the increase of the light guide plate.