CN202532330U

CN202532330U - Light leak prevention LED (Light Emitting Diode) backlight module

Info

Publication number: CN202532330U
Application number: CN201220165625XU
Authority: CN
Inventors: 李忠成; 张镇
Original assignee: Skyworth LCD Shenzhen Co Ltd
Current assignee: Skyworth LCD Shenzhen Co Ltd
Priority date: 2012-04-18
Filing date: 2012-04-18
Publication date: 2012-11-14
Anticipated expiration: 2022-04-18

Abstract

The utility model provides a light leak prevention LED (Light Emitting Diode) backlight module, which comprises an LED lamp strip, a rear panel, a radiating strip, a reflecting plate and a light guide plate, wherein the LED lamp strip comprises an LED substrate, an LED lamp arranged on the LED substrate, and a light barrier, which is located at the same side of the LED lamp and is vertical to the LED substrate, the light barrier of the LED lamp strip and the bottom surface of the radiating strip form a U-shaped opening, and one ends of the light guide plate and the reflecting plate are inserted into the U-shaped opening. According to the light leak prevention LED backlight module provided by the utility model, the LED lamp strip is improved to an L-shaped structure, so that the LED lamp strip and the radiating strip can form the U-shaped opening, which is inserted by the light guide plate and the reflecting plate, thus light emitted by the LED can be effectively shielded, the utilization rate of the LED lighting is improved, the problems of light leak and lighting can be solved, process steps for shading through sticking an adhesive tape or a side reflecting piece on a middle frame can be avoided, working hours can be saved, and materials are saved.

Description

A kind of anti-light leak LED-backlit module

Technical field

The utility model relates to a kind of LED-backlit module of liquid crystal display, especially relates to a kind of anti-light leak LED-backlit module.

Background technology

The LED-backlit module is to be present in an inner optical module of LCD, is made up of light source and necessary optics accessory.LED-backlit module commonly used in the prior art is as shown in Figure 1, and light source is placed on the side of module backlight, and the white light penetration plate that is produced by light source (LED lamp bar 2 ') reflexes in the LGP of being processed by acrylic.The LED-backlit module of available liquid crystal TV is in order to pursue the appearance of ultra narrow frame; Make that the light mixing distance of LED lamp bar and picture area is very limited; From figure, can find out; The light that LED lamp bar 2 ' sends can not get into LGP 4 ' fully, thereby has caused the phenomenon that light leak and lamp shadow are arranged in the viewing area.But the scheme of existing solution lamp shadow be on the center of LED-backlit module, tape or the lateral reflection sheet come shading; This scheme not only can not solve the problem of light leak and lamp shadow fully, and sticks on the design that adhesive tape is also wasted man-hour and is unfavorable for the narrow limitization of LED-backlit module.

The utility model content

The purpose of the utility model is to solve the shortcoming that light leak and lamp shadow appear in existing LED-backlit module easily, and a kind of anti-light leak LED-backlit module is provided.

The technical scheme that its technical problem that solves the utility model adopts is: a kind of anti-light leak LED-backlit module; Comprise LED lamp bar, backboard, be fixed in heat sink strip, reflecting plate and LGP on the said backboard; Said heat sink strip comprises orthogonal vertical panel and bottom panel; Said LED lamp bar is fixed on the vertical panel of said heat sink strip; Said LED lamp bar comprises the LED substrate, places the LED lamp on the said LED substrate and is positioned at said LED lamp homonymy and perpendicular to the light barrier of LED substrate, the light barrier of said LED lamp bar and the bottom panel of said heat sink strip form a U font opening, and an end of said LGP and reflecting plate inserts in the said U font opening.

Further, said LED lamp bar side is L font structure.

Further, said reflecting plate places on the bottom panel of said heat sink strip, and said LGP places on the said reflecting plate.

Further, the light barrier of said LED lamp bar is higher than said LED lamp.

Further, said LED lamp bar is fixed on the said heat sink strip through screw.

Further, said LED lamp bar is fixed on the said heat sink strip through the heat conduction sticker.

The beneficial effect of the utility model is: the utility model provides a kind of anti-light leak LED-backlit module, because its LED lamp bar is modified to the L font structure, makes LED lamp bar and heat sink strip can form U font opening; Supply LGP and reflecting plate to insert; This structure can effectively be covered the light that LED sends on the one hand, and the light that makes LED send can all get into LGP, thereby improves the utilization rate of LED light; Solve light leak and lamp shadow problem, and be beneficial to the design of the narrow limitization of LED-backlit module; On the other hand, avoided on center, taping or the lateral reflection sheet come the processing step of shading, this structure has not only been practiced thrift man-hour, has also saved material.

Description of drawings

Fig. 1 is the overall structure sketch map of traditional LED-backlit module;

Fig. 2 is the overall structure sketch map of the anti-light leak LED-backlit module that provides of the utility model embodiment;

Fig. 3 is LED lamp bar and the fixing structural representation of heat sink strip that the utility model embodiment provides.

Among the figure: 1 '-backboard, 2 '-heat sink strip, 3 '-LED lamp bar, 4 '-LGP, 5 '-reflecting plate, 1-backboard, 2-heat sink strip, 21-vertical panel, 22-bottom panel, 3-LED lamp bar, 31-LED substrate, 32-LED lamp, 33-light barrier, 4-LGP, 5-reflecting plate, 6-U font opening.

The specific embodiment

For the purpose, technical scheme and the advantage that make the utility model is clearer,, the utility model is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.

Referring to Fig. 2-Fig. 3; A kind of anti-light leak LED-backlit module that provides for the utility model; Comprise LED lamp bar 3, backboard 1, be fixed in heat sink strip 2, reflecting plate 5 and LGP 4 on the said backboard 1; Said heat sink strip 2 comprises orthogonal vertical panel 21 and bottom panel 22; Said LED lamp bar 3 is fixed on the vertical panel 21 of said heat sink strip 2; Said LED lamp bar 3 comprises LED substrate 31, places the LED lamp 32 on the said LED substrate 31 and is positioned at said LED lamp 32 homonymies and perpendicular to the light barrier 33 of LED substrate 31, the light barrier 33 of said LED lamp bar 3 forms a U font opening 6 with the bottom panel of said heat sink strip 2 22, and an end of said LGP 4 and reflecting plate 5 inserts in the said U font opening 6.The anti-light leak LED-backlit module of the utility model; Heat sink strip 2 places the side of said reflecting plate 5 and LGP 4; And LED lamp bar 3 is fixed on the vertical panel 21 of heat sink strip 2, and the white light penetration plate 5 that is produced by LED lamp bar 3 reflexes in the LGP of being processed by acrylic 4.The structural design of the utility model has been avoided on center, taping or the lateral reflection sheet comes the processing step of shading, has therefore not only practiced thrift man-hour, has also saved material, and has been beneficial to the design of the narrow limitization of LED-backlit module.

Referring to Fig. 3, said LED lamp bar 3 sides are L font structure.The L font structure of the LED lamp bar 3 of the utility model and heat sink strip 2 merge the structure that forms U font opening 6; Can supply LGP 4 and reflecting plate 5 to insert; This U font structure can effectively be covered the light that LED lamp 32 sends; Make light that LED lamp 32 sends all 5 reflections of penetration plate get on the LGPs 4, thereby improve the utilization rate of LED light, solved light leak and lamp shadow problem.

Particularly, please again referring to Fig. 2, reflecting plate described in the utility model 5 places on the bottom panel 22 of said heat sink strip 2, and said LGP 4 places on the said reflecting plate 5.In the utility model the effect of reflecting plate 5 be with the light source that LED lamp bar 3 sends take in fully and usable reflection to LGP 4.LGP 4 can adopt through acrylic (PMMA) plate of printing or polystyrene (PS) plate of extrusion modling and process, and the light that its role is to LED lamp bar 3 is sent effectively mixes the exiting surface ejaculation of back from LGP 4.

Further, can know that by figure the light barrier 33 of the lamp of LED described in the utility model bar 3 is higher than said LED lamp 32.In order to prevent the phenomenon of light leak, must be with the height of light barrier 33 height greater than LED lamp 32, the light source of avoiding LED lamp 32 to send was scattered away before getting into reflecting plate 5.

The utility model dorsulum 1 is the support member of entire aphototropism mould, and said heat sink strip 2 is fixed on the backboard 1, and contacts with it.Simultaneously, LED lamp bar 3 is fixed on the vertical panel 21 of said heat sink strip 2, contacts with heat sink strip 2.Said LED lamp bar 3 is fixed on the said heat sink strip 2 through screw.Perhaps, said LED lamp bar 3 is fixed on (not shown) on the said heat sink strip 2 through the heat conduction sticker.Described heat sink strip adopts the metal material such as the metallic aluminium that are easy to dispel the heat to process, so that the heat that in time LED lamp bar 3 is produced when luminous conducts, makes that the operating temperature of LED lamp bar 3 is lower, increases the service life.

More than be merely the preferred embodiment of the utility model,, any modification of being done within all spirit at the utility model and the principle, be equal to and replace and improvement etc., all should be included within the protection domain of the utility model not in order to restriction the utility model.

Claims

1. anti-light leak LED-backlit module; Comprise LED lamp bar, backboard, be fixed in heat sink strip, reflecting plate and LGP on the said backboard; Said heat sink strip comprises orthogonal vertical panel and bottom panel; Said LED lamp bar is fixed on the vertical panel of said heat sink strip; It is characterized in that: said LED lamp bar comprises the LED substrate, places the LED lamp on the said LED substrate and is positioned at said LED lamp homonymy and perpendicular to the light barrier of LED substrate, the light barrier of said LED lamp bar and the bottom panel of said heat sink strip form a U font opening, and an end of said LGP and reflecting plate inserts in the said U font opening.

2. a kind of anti-light leak LED-backlit module as claimed in claim 1 is characterized in that said LED lamp bar side is L font structure.

3. a kind of anti-light leak LED-backlit module as claimed in claim 1 is characterized in that said reflecting plate places on the bottom panel of said heat sink strip, and said LGP places on the said reflecting plate.

4. a kind of anti-light leak LED-backlit module as claimed in claim 1 is characterized in that the light barrier of said LED lamp bar is higher than said LED lamp.

5. a kind of anti-light leak LED-backlit module as claimed in claim 1 is characterized in that said LED lamp bar is fixed on the said heat sink strip through screw.

6. like each described a kind of anti-light leak LED-backlit module of claim 1-5, it is characterized in that said LED lamp bar is fixed on the said heat sink strip through the heat conduction sticker.