CN201803229U - Novel LED backlight module group - Google Patents
Novel LED backlight module group Download PDFInfo
- Publication number
- CN201803229U CN201803229U CN2010202664875U CN201020266487U CN201803229U CN 201803229 U CN201803229 U CN 201803229U CN 2010202664875 U CN2010202664875 U CN 2010202664875U CN 201020266487 U CN201020266487 U CN 201020266487U CN 201803229 U CN201803229 U CN 201803229U
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- light source
- lgp
- fin
- dissipating sheet
- module backlight
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Abstract
The utility model discloses a backlight module group which comprises a light guide plate, light sources, a back cover and a heat radiating plate, wherein, the light guide plate is arranged on the back cover; the heat radiating plate is arranged between the light guide plate and the back cover, the light sources are arranged on the lateral sides of the light guide plate; a heat radiating fin is fixed on a circuit board of the light source on at least one lateral side of the light guide plate; and the heat radiating fin is fixedly connected with one end of an elastic piece, and the other end of the elastic piece is fixed on the back cover. Otherwise, the heat radiating fin self has elasticity, thereby enabling light-emitting surfaces of the light sources to cling to the light guide plate and maximize the light-emitting efficiency. When the light guide plate heats and expands, a movable side of the light guide plate can move and extrude towards the heat radiating fin; and when the light guide plate contracts, the elastic piece or the heat radiating fin is restored to deformation and pushes the heat radiating fin and the light source group to move towards the light guide plate.
Description
Technical field
The utility model relates to a kind of New LED module backlight.
Background technology
Use LGP (LGP) that spot light or line source are converted to planar light source in the module backlight, light source is arranged on the both sides (up and down or about) of LGP or all around usually.As shown in Figure 1, housing (Frame) 15 ' and bonnet (Back cover) 4 ' between be fixed with LGP 1 ', LGP 1 ' all sides be provided with light source 2 '.
Consider that LGP is heated, can expand after the moisture absorption, all can reserve a gap (Gap) between LGP and the light source usually.It is LED that present industry is expected to widely used light source, and the utilization rate of light source is the highest when the LED light-emitting area closely contacts with LGP, otherwise gap between the two is big more, and the light loss consumption is many more.Because heating was bigger when a large amount of LED gathered back work, need fix a heat sink on circuit board.The heat sink that uses all is fixed on the bonnet by securing member at present.As shown in Figure 1, install light source 2 ' circuit board 3 ' be fixed in heat sink 5 ' on, securing member 6 ' with heat sink 5 ' be fixed on bonnet 4 ' on.
This structure has following defective:
1, the gap between LED light-emitting area and LGP causes the utilization rate of light source low.
2, have to increase LED number or use better blooming piece owing to the light source utilization rate is low, cause that module operating temperature backlight rises, module backlight (BKL) cost rises.
The brightness value of last table for recording under a LED-backlit LGP assembling situation different with the LED gap can be found out from last table, and the gap that increases LGP and LED causes obviously reducing brightness backlight.
Therefore, prior art awaits improving and development.
The utility model content
The purpose of this utility model is to provide a kind of New LED module backlight, solves LED-backlit module optical efficiency problem on the low side.
The technical solution of the utility model is as follows:
A kind of module backlight, comprise LGP, light source, bonnet and heat sink, described LGP is arranged on the bonnet, described heat sink is arranged between LGP and the bonnet, described light source is arranged on the side of LGP, described light source contact LGP, described module backlight also comprises heat abstractor, described heat abstractor is used to light source heat radiation and controls light source and move along LGP expansion direction or shrinkage direction.
Described module backlight, wherein, described heat abstractor comprises fin and elastic component, and described fin is fixedlyed connected with the circuit board that light source is installed, and an end of described elastic component is fixedlyed connected with fin, and the other end of described elastic component is fixed on the bonnet.
Described module backlight, wherein, described heat sink upper edge LGP expansion direction is provided with groove, and described fin and described groove fasten.
Described module backlight, wherein, described groove is dovetail groove or T-slot.
Described module backlight, wherein, the front end of described groove is provided with the cavity that is used to install described fin.
Described module backlight, wherein, described fin is fixedlyed connected by pin or screw with described elastic component.
Described module backlight, wherein, described heat abstractor comprises the elastic heat dissipating sheet, and an end of described elastic heat dissipating sheet is fixed on the circuit board that light source is installed, the other end of described elastic heat dissipating sheet is fixed on the heat sink, and described elastic heat dissipating sheet middle part is set to circular arc.
Described module backlight, wherein, described heat abstractor comprises the elastic heat dissipating sheet, and an end of described elastic heat dissipating sheet is fixed on the circuit board that light source is installed, the other end of described elastic heat dissipating sheet is fixed on the bonnet, and described elastic heat dissipating sheet middle part is set to circular arc.
Described module backlight, wherein, described elastic heat dissipating sheet is that aluminium flake and two ends are fixed by heat-conducting glue respectively.
Described module backlight, wherein, the fixing end of described elastic heat dissipating sheet and described circuit board is provided with stereotype plate.
Adopt such scheme, the utility model can make light source (LED) be close to LGP, can improve the light source utilization rate, thereby reduces light source (LED) usage quantity, saving cost in the module backlight, owing to reduce thermal source, also can play the effect in service life of prolongation product simultaneously.
Description of drawings
Fig. 1 is the LED-backlit modular structure figure of prior art;
Fig. 2 is the structure chart of LED-backlit module embodiment one of the present utility model;
Fig. 3 a is the partial front elevation view of LED-backlit module embodiment one of the present utility model;
Fig. 3 b is the vertical view of Fig. 3 a;
Fig. 4 is the fin of the utility model embodiment one and the schematic diagram of heat sink fastening structure;
Fig. 5 is the schematic diagram of the elastic component fixed form of the utility model embodiment one;
Fig. 6 is the schematic diagram of the embodiment two of LED-backlit module of the present utility model;
Fig. 7 is the schematic diagram of the embodiment three of LED-backlit module of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in further detail.
The utility model provides a kind of movable LED-backlit module, its improvement mainly is: at least one side that makes light source group relative in the module backlight is a packaged type, for making mobile front and back radiating effect constant, being equipped with simultaneously can be with light source and the mobile fin of circuit board.Can realize that so the led light source light-emitting area is close to LGP and makes luminous efficiency maximization.Removable side can move, push elastic component to the elastic component direction when the LGP heating is expanded; Elastic component recovered deformation when LGP shrank, and promoted fin and light source group and moved to LGP.
Embodiment one
As shown in Figure 2, similar with the LED-backlit module of prior art, between LGP 1 and bonnet 4, be fixed with fin 5 by securing member 6.Difference is: LGP 1 abuts against with light source 2, sets up fin 7 on the circuit board 3 of the light source 2 of a side, is fixed in elastic component 8 on the bonnet by the other end, and fin 7 can move on heat sink 5.
Fig. 3 a, 3b are that fin 7 and heat sink 5 cooperates the back structure charts, on heat sink 5 slideway are set, and the slideway lower end can be provided with groove 9 fastens both, and groove 9 can be dovetail groove or a structure such as T-slot as shown in Figure 4.For the ease of installing, a cavity 10 can be set at the front end of heat sink 5 slideways, the back-off on the fin 7 vertically inserts, slides into the precalculated position from cavity 10 positions.Behind the fastening, the structure of this groove 9 can limit fin 7 and can only move along the slideway direction.
Fig. 4 is the utility model fin 7 and three kinds of examples of heat sink 5 fastening structures, and its common ground is to control light source 2 can only be along the slideway direction, be that the LGP expansion direction moves.
Fig. 5 is an elastic component fixed form schematic diagram of the present utility model, fixture 11 (for example, pin or screw) is penetrated elastic component 8, and be fixed in fin 7 back sides, and elastic component 8 entangled and be subjected to it to retrain fixture 11 this moment, and the back just can not be shifted in the module of packing into.
Embodiment two
Fig. 6 is another embodiment of the utility model.As shown in the figure, saved elastic component, directly adopted because of bending rubber-like fin 7, the material manufacturings such as aluminium flake that can select high-termal conductivity for use.Fin 7 long limits are fixed on the bonnet 4 by heat-conducting glue 12, in addition, fin 7 long limits also can be fixed on the heat sink 5 by heat-conducting glue 12, promoting light source 2 when LGP expands moves right, since the buffering of sweep, fin 7 long limit lengthenings, and minor face shortens, the semi arch center of circle, fin 7 middle part reduces to the spacing of light source group, thereby regulates light source position.Can fix a stereotype plate 13 near the bending part of circuit board 3 by heat-conducting glue 12 at fin 7, purpose is to make the typing of fin 7 bending parts, guarantees that bending edges is perpendicular to substrate, in order to avoid make the led light source run-off the straight.Stereotype plate 13 can be used the high-cooling property material, also available common material.
Embodiment three
Fig. 7 also is another embodiment of the utility model.Similar with embodiment two, directly adopt because of bending rubber-like fin 7.Fin 7 one end heat-conducting glues 12 are fixed in (in addition, fin 7 these ends also can be directly fixed on the bonnet 4 by heat-conducting glue 12) on the heat sink 5, and the other end is fixed on the circuit board 3.Promote light source 2 when LGP expands and move right, the extrusion of fin 7 middle part semi arch portions, radius reduces, height increases, thereby regulates light source position.Also can increase stereotype plate in circuit board 3 one sides.
Compare with embodiment one, embodiment two, three can further enlarge area of dissipation, improve radiating effect.Simultaneously, also can save heat sink, help reducing cost if fin is directly fixed on the bonnet.
The present invention can be applicable to use large scale LED-backlit module, especially LED LCD TV, the LED LCD etc. of LGP.In addition, fin of the present utility model and elastic component structure can in order to improve optical efficiency, so also can further improve packaging efficiency, save cost directly as parts in the LCD module backlight.
Should be understood that, for those of ordinary skills, can be improved according to the above description or conversion, and all these improvement and conversion all should belong to the protection domain of the utility model claims.
Claims (10)
1. module backlight, comprise LGP, light source, bonnet and heat sink, described LGP is arranged on the bonnet, described heat sink is arranged between LGP and the bonnet, described light source is arranged on the side of LGP, it is characterized in that, described light source contact LGP, described module backlight also comprises heat abstractor, and described heat abstractor is used to light source heat radiation and controls light source and move along LGP expansion direction or shrinkage direction.
2. module backlight according to claim 1, it is characterized in that described heat abstractor comprises fin and elastic component, described fin is fixedlyed connected with the circuit board that light source is installed, one end of described elastic component is fixedlyed connected with fin, and the other end of described elastic component is fixed on the bonnet.
3. module backlight according to claim 2 is characterized in that, described heat sink upper edge LGP expansion direction is provided with groove, and described fin and described groove fasten.
4. module backlight according to claim 3 is characterized in that, described groove is dovetail groove or T-slot.
5. module backlight according to claim 3 is characterized in that the front end of described groove is provided with the cavity that is used to install described fin.
6. module backlight according to claim 2 is characterized in that, described fin is fixedlyed connected by pin or screw with described elastic component.
7. module backlight according to claim 1, it is characterized in that, described heat abstractor comprises the elastic heat dissipating sheet, one end of described elastic heat dissipating sheet is fixed on the circuit board that light source is installed, the other end of described elastic heat dissipating sheet is fixed on the heat sink, and described elastic heat dissipating sheet middle part is set to circular arc.
8. module backlight according to claim 1, it is characterized in that, described heat abstractor comprises the elastic heat dissipating sheet, one end of described elastic heat dissipating sheet is fixed on the circuit board that light source is installed, the other end of described elastic heat dissipating sheet is fixed on the bonnet, and described elastic heat dissipating sheet middle part is set to circular arc.
9. according to claim 7 or 8 described modules backlight, it is characterized in that described elastic heat dissipating sheet is that aluminium flake and two ends are fixed by heat-conducting glue respectively.
10. according to claim 7 or 8 described modules backlight, it is characterized in that the fixing end of described elastic heat dissipating sheet and described circuit board is provided with stereotype plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202664875U CN201803229U (en) | 2010-07-21 | 2010-07-21 | Novel LED backlight module group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202664875U CN201803229U (en) | 2010-07-21 | 2010-07-21 | Novel LED backlight module group |
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| CN201803229U true CN201803229U (en) | 2011-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010202664875U Expired - Fee Related CN201803229U (en) | 2010-07-21 | 2010-07-21 | Novel LED backlight module group |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322601A (en) * | 2011-10-12 | 2012-01-18 | 深圳市华星光电技术有限公司 | Light-emitting diode (LED) backlight module and liquid crystal display device |
| CN102734713A (en) * | 2012-07-13 | 2012-10-17 | 深圳市华星光电技术有限公司 | LED (light-emitting diode) backlight module |
| CN102737557A (en) * | 2011-03-30 | 2012-10-17 | 索尼公司 | Display device |
| CN102865510A (en) * | 2012-09-12 | 2013-01-09 | 深圳市华星光电技术有限公司 | Backlight unit and liquid-crystal display device |
| WO2013007034A1 (en) * | 2011-07-14 | 2013-01-17 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display device |
| WO2013033941A1 (en) * | 2011-09-09 | 2013-03-14 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display |
| CN103267240A (en) * | 2013-06-19 | 2013-08-28 | 苏州信亚科技有限公司 | Clean room waterproof LED (light-emitting diode) panel light with good heat dissipation performance |
| CN103712178A (en) * | 2014-01-23 | 2014-04-09 | 苏州通亮照明科技有限公司 | Illumination device |
| CN104235700A (en) * | 2014-09-29 | 2014-12-24 | 南京中电熊猫液晶显示科技有限公司 | LED backlight module |
| CN104654128A (en) * | 2014-12-26 | 2015-05-27 | 深圳市华星光电技术有限公司 | Backlight module and display device |
| CN104728788A (en) * | 2013-12-19 | 2015-06-24 | 纬创资通股份有限公司 | Backlight module |
| CN104976535A (en) * | 2014-04-11 | 2015-10-14 | 松下知识产权经营株式会社 | LED unit and LED luminaire |
| US9164227B2 (en) | 2012-07-13 | 2015-10-20 | Shenzhen China Star Optoelectronics Technology Co., Ltd | LED backlight module |
| CN105629551A (en) * | 2016-03-28 | 2016-06-01 | 青岛海信电器股份有限公司 | Display device |
| CN105783567A (en) * | 2016-03-22 | 2016-07-20 | 周玉翔 | Industrial heat sink |
| CN113759602A (en) * | 2021-09-07 | 2021-12-07 | 京东方科技集团股份有限公司 | Backlight module, display device and display system |
| CN116466427A (en) * | 2023-03-01 | 2023-07-21 | 广东千瞬光电科技有限公司 | Light guide plate side-in type backlight assembly |
| DE112012006491B4 (en) | 2012-07-02 | 2023-08-24 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Backplane for an LCD device and LCD device |
-
2010
- 2010-07-21 CN CN2010202664875U patent/CN201803229U/en not_active Expired - Fee Related
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102737557A (en) * | 2011-03-30 | 2012-10-17 | 索尼公司 | Display device |
| WO2013007034A1 (en) * | 2011-07-14 | 2013-01-17 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display device |
| US8687141B2 (en) | 2011-07-14 | 2014-04-01 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Backlight module and liquid crystal display |
| WO2013033941A1 (en) * | 2011-09-09 | 2013-03-14 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display |
| US8523422B2 (en) | 2011-10-12 | 2013-09-03 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | LED back light module and liquid crystal display device |
| WO2013053139A1 (en) * | 2011-10-12 | 2013-04-18 | 深圳市华星光电技术有限公司 | Led backlight module and liquid crystal display device |
| CN102322601A (en) * | 2011-10-12 | 2012-01-18 | 深圳市华星光电技术有限公司 | Light-emitting diode (LED) backlight module and liquid crystal display device |
| DE112012006491B4 (en) | 2012-07-02 | 2023-08-24 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Backplane for an LCD device and LCD device |
| US9164227B2 (en) | 2012-07-13 | 2015-10-20 | Shenzhen China Star Optoelectronics Technology Co., Ltd | LED backlight module |
| WO2014008687A1 (en) * | 2012-07-13 | 2014-01-16 | 深圳市华星光电技术有限公司 | Led backlight module |
| CN102734713A (en) * | 2012-07-13 | 2012-10-17 | 深圳市华星光电技术有限公司 | LED (light-emitting diode) backlight module |
| CN102865510A (en) * | 2012-09-12 | 2013-01-09 | 深圳市华星光电技术有限公司 | Backlight unit and liquid-crystal display device |
| CN102865510B (en) * | 2012-09-12 | 2015-06-10 | 深圳市华星光电技术有限公司 | Backlight unit and liquid-crystal display device |
| CN103267240A (en) * | 2013-06-19 | 2013-08-28 | 苏州信亚科技有限公司 | Clean room waterproof LED (light-emitting diode) panel light with good heat dissipation performance |
| CN104728788A (en) * | 2013-12-19 | 2015-06-24 | 纬创资通股份有限公司 | Backlight module |
| CN103712178A (en) * | 2014-01-23 | 2014-04-09 | 苏州通亮照明科技有限公司 | Illumination device |
| CN104976535A (en) * | 2014-04-11 | 2015-10-14 | 松下知识产权经营株式会社 | LED unit and LED luminaire |
| CN104235700A (en) * | 2014-09-29 | 2014-12-24 | 南京中电熊猫液晶显示科技有限公司 | LED backlight module |
| CN104235700B (en) * | 2014-09-29 | 2016-08-24 | 南京中电熊猫液晶显示科技有限公司 | A kind of LED-backlit module |
| CN104654128A (en) * | 2014-12-26 | 2015-05-27 | 深圳市华星光电技术有限公司 | Backlight module and display device |
| CN105783567A (en) * | 2016-03-22 | 2016-07-20 | 周玉翔 | Industrial heat sink |
| CN105629551A (en) * | 2016-03-28 | 2016-06-01 | 青岛海信电器股份有限公司 | Display device |
| CN113759602A (en) * | 2021-09-07 | 2021-12-07 | 京东方科技集团股份有限公司 | Backlight module, display device and display system |
| CN116466427A (en) * | 2023-03-01 | 2023-07-21 | 广东千瞬光电科技有限公司 | Light guide plate side-in type backlight assembly |
| CN116466427B (en) * | 2023-03-01 | 2023-10-17 | 广东千瞬光电科技有限公司 | Light guide plate side-in type backlight assembly |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110420 Termination date: 20130721 |