Reflection structure of light-emitting diode (LED) plane light source

Abstract

The invention discloses a reflection structure of an LED plane light source. The LED plane light source comprises a frame, a light guide plate and an LED light bar, wherein the frame is fixedly connected to the side edge of the light guide plate, the LED light bar is arranged on the inner side wall of the frame and positioned at the side edge of the light guide plate, and the side of the light guide plate, which is provided with a light guide spot is the back of the light guide plate. The reflection structure comprises a first reflection layer and second reflection layers, wherein the first reflection layer is covered on the back of the light guide plate, the second reflection layers are positioned between the LED light bar and the side edge of the light guide plate and arranged between adjacent LEDs. According to the refection structure, on the basis of the existing reflection structure of the LED plane light source, the second reflection layers are positioned between the LED light bar and the side edge of the light guide plate and arranged between adjacent LEDs and used for further improving the reflection efficiency and preventing light rays from being absorbed by an aluminum substrate of the LED light bar, so that the luminous efficiency is improved.

Description

technical field [0001] The invention belongs to the field of similar planar light sources such as backlight modules or LED planar lamps, and in particular relates to an improved reflection structure of an LED planar light source, which has the function of improving energy efficiency. Background technique [0002] The LED planar light source in the prior art is planar and the components inside are also planar. It is mainly to install a planar reflector, light guide plate and diffusion plate in sequence in a frame, and install them in the frame and on the side of the light guide plate. LED light strips are installed at the edge, and the light is reflected multiple times under the joint action of the reflector and the light guide plate to improve uniformity, and the diffuser plate effectively prevents glare. The LED planar light source in the prior art only sets a layer of reflective plate on the back of the light guide plate to improve the reflection efficiency and energy effi...

AI Technical Summary

Problems solved by technology

The LED planar light source in the prior art only sets a layer of reflective plate on the back of the light guide plate to improve the reflection efficiency and energy efficiency, or in addition, a reflective sheet is pasted on the side of the light guide plate without LED light bars to further improve Reflection efficiency and prevent light from being absorbed by the frame, thereby improving energy efficiency, but as we can see from the above, since the LED light bar is generally an aluminum substrate assembled with multiple LEDs, the aluminum substrate will also absorb part of the light, thereby converting it into heat energy. Therefore, the luminous efficiency is also reduced to a certain extent.

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