CN209803369U

CN209803369U - Double-sided light-emitting LED (light-emitting diode) surface light source

Info

Publication number: CN209803369U
Application number: CN201920657101.4U
Authority: CN
Inventors: 孙涛
Original assignee: Wuxi Ray Tech Photoelectronic Technology Co Ltd
Current assignee: Wuxi Ray Tech Photoelectronic Technology Co Ltd
Priority date: 2019-05-08
Filing date: 2019-05-08
Publication date: 2019-12-17
Anticipated expiration: 2029-05-08

Abstract

The utility model discloses a two-sided luminous LED area source, it includes light guide plate, two diffusion pieces and LED light source, two diffusion pieces correspond respectively set up in on the two sides of light guide plate, the LED light source is located one side of light guide plate, wherein, the two sides of light guide plate with all be provided with between the diffusion piece and be arranged in destroying the total reflection in the light guide plate and act on and derive the site to the diffuser plate with light from the light guide plate, the part that does not have the site in the two sides of light guide plate is as reflection stratum reflection light. The double-sided light-emitting LED surface light source is simple in structure and low in cost; and the light efficiency is high, and the consistency of the light intensity, the color temperature and the color of the two surfaces is good.

Description

Double-sided light-emitting LED (light-emitting diode) surface light source

Technical Field

The utility model relates to a LED light source especially relates to a two-sided luminous LED area source.

Background

The traditional double-sided light-emitting surface light source is shown in fig. 1, fig. 1 is a structural schematic diagram of the existing double-sided light-emitting surface light source, a double-layer light guide plate 10 is adopted, light rays emitted by LED light sources 11 at different positions are respectively guided into different light guide media, corresponding dots are arranged on one side of each light guide medium, and the effect of double-sided uniform light emitting is achieved through matching with a corresponding reflection film 12 and a corresponding diffusion sheet 13. The following problems exist in the specific application process:

1) Two complete single-sided light-emitting source systems are needed, namely at least two LED lamp bars, two light guide plates, two diffusion sheets and at least one reflection film are needed, the number of used devices is large, the cost is high, the thickness of the whole light source is thick, and the light source cannot be very light and thin;

2) The two light guide medium layers correspond to different LED lamp strips, and the power and color temperature of LED chips in the different LED lamp strips are easy to be inconsistent, so that the indexes such as light intensity, color temperature and color of double-sided light emission are inconsistent.

SUMMERY OF THE UTILITY MODEL

an object of the utility model is to provide a two-sided luminous LED area source to there is with high costs and light intensity and the inconsistent problem of colour temperature in the two-sided luminous area source among the solution prior art.

To achieve the purpose, the utility model adopts the following technical proposal:

A double-sided light-emitting LED surface light source comprises a light guide plate, two diffusion sheets and an LED light source, wherein the two diffusion sheets are respectively and correspondingly arranged on two sides of the light guide plate, the LED light source is positioned on one side of the light guide plate, mesh points used for destroying the total reflection effect in the light guide plate and guiding light out of the light guide plate to the diffusion plate are arranged between the two sides of the light guide plate and the diffusion sheets, and the parts without the mesh points in the two sides of the light guide plate are used as reflecting layers to reflect the light.

Particularly, the mesh points are transparent adhesive spots formed between the light guide plate and the diffusion sheet, and the transparent adhesive spots connect the light guide plate and the diffusion sheet into a whole.

In particular, the mesh points are recessed points laser-formed on both sides of the light guide plate.

Particularly, the mesh points are reflective ink bumps arranged on two sides of the light guide plate.

Particularly, the two diffusion sheets and the light guide plate are arranged at intervals, and the relative position between the light guide plate and the two diffusion sheets is fixed through an outer frame of the light source.

the utility model has the advantages that compared with the prior art, the double-sided luminous LED surface light source has simple structure and low cost; and the light efficiency is high, and the consistency of the light intensity, the color temperature and the color of the two surfaces is good.

Drawings

Fig. 1 is a schematic structural diagram of a conventional double-sided light-emitting surface light source;

Fig. 2 is a schematic structural diagram of a double-sided light-emitting LED surface light source according to an embodiment of the present invention.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete. It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 2, fig. 2 is a schematic structural diagram of a double-sided light emitting LED surface light source according to an embodiment of the present invention.

In this embodiment, a double-sided light-emitting LED surface light source includes a light guide plate 20, two diffusion sheets 21 and an LED light source 22, the two diffusion sheets 21 are respectively and correspondingly disposed on two sides of the light guide plate 20, a gap exists between the diffusion sheets 21 and the light guide plate 20, the LED light source 22 is disposed on one side of the light guide plate 20, dots 23 for destroying the total reflection action in the light guide plate 20 to guide light out from the light guide plate 20 to the diffusion sheets 21 are disposed between the two sides of the light guide plate 20 and the diffusion sheets 21, the dots 23 are arranged according to a certain range, and uniform light emission of the whole surface can be realized by controlling the arrangement, density and. The portions 24 of both sides of the light guide plate 20 without the dots serve as reflective layers to reflect light.

The arrangement of the dots 23 mainly includes the following three types:

The mesh points 23 are transparent adhesive dots formed between the light guide plate 20 and the diffusion sheet 21, and the transparent adhesive dots connect the light guide plate 20 and the diffusion sheet 21 into a whole to fix the relative positions of the light guide plate 20 and the diffusion sheet 21.

Secondly, the dots 23 are recessed dots formed on both sides of the light guide plate 20 by laser, and the relative positions between the light guide plate 20 and the two diffusion sheets 21 are fixed by the outer frame of the light source.

Third, the dots 23 are reflective ink bumps disposed on both sides of the light guide plate 20, and the relative position between the light guide plate 20 and the two diffusion sheets 21 is fixed by the outer frame of the light source.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims

1. A double-sided light-emitting LED area light source comprises a light guide plate, two diffusion sheets and an LED light source, wherein the two diffusion sheets are respectively and correspondingly arranged on two sides of the light guide plate, the LED light source is positioned on one side of the light guide plate, mesh points used for destroying the total reflection effect in the light guide plate and guiding light out of the light guide plate to the diffusion plate are arranged between the two sides of the light guide plate and the diffusion sheets, and the parts without the mesh points in the two sides of the light guide plate are used as reflecting layers to reflect the light.

2. a double-sided light emitting LED area light source as claimed in claim 1, wherein the dots are transparent adhesive dots formed between the light guide plate and the diffusion sheet, and the transparent adhesive dots connect the light guide plate and the diffusion sheet as a whole.

3. A double-sided light emitting LED area light source as claimed in claim 1, wherein the dots are recessed dots laser-formed on both sides of the light guide plate.

4. A dual emitting LED area light source as claimed in claim 1, wherein the dots are reflective ink bumps disposed on both sides of the light guide plate.

5. A double-sided light emitting LED area light source as claimed in any one of claims 3 or 4, wherein the two diffusion sheets are spaced apart from the light guide plate, and the relative positions of the light guide plate and the two diffusion sheets are fixed by an outer frame of the light source.