CN202452303U - LED (Light Emitting Diode) backlight module - Google Patents
LED (Light Emitting Diode) backlight module Download PDFInfo
- Publication number
- CN202452303U CN202452303U CN2012200547202U CN201220054720U CN202452303U CN 202452303 U CN202452303 U CN 202452303U CN 2012200547202 U CN2012200547202 U CN 2012200547202U CN 201220054720 U CN201220054720 U CN 201220054720U CN 202452303 U CN202452303 U CN 202452303U
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- Prior art keywords
- led lamp
- led
- heat sink
- strips
- lamp bar
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- Planar Illumination Modules (AREA)
Abstract
The utility model provides an LED (Light Emitting Diode) backlight module, which comprises an optical membrane, LED lamp strips, two external radiating strips, a back panel and a light condensing cover, wherein the LED lamp strips are oppositely arranged on the two sides of the optical membrane; the two external radiating strips are oppositely arranged; the light condensing cover is arranged on the LED lamp strips; each external radiating strip comprises a vertical panel and a bottom panel which are perpendicular to each other; the LED lamp strips are fixedly arranged on the opposite side faces of the vertical panels of the two external radiating strips; and the back panel is arranged between the bottom panels of the external radiating strips and the optical membrane. According to the LED backlight module, the external radiating strips are separated from the optical membrane in the backlight module by the back panel, so that the situation of baking of the membrane due to the fact that the heat of the LED lamp strips is directly transferred to the optical membrane through the radiating strips is avoided to the greatest extent and the condition of deformation due to the baking of the membrane is reduced, thereby guaranteeing the brightness uniformity of the optical membrane; and meanwhile, in order to prevent light leakage of the LED lamp strips, the light condensing cover is arranged on the LED lamp strips.
Description
Technical field
The utility model relates to field of liquid crystal display, especially relates to a kind of LED-backlit module.
Background technology
Liquid crystal display has become the main flow display device.What LCD TV and LCD developed in recent years advances by leaps and bounds.Because liquid crystal panel itself can't be luminous, needs backlight to provide light source can reach display effect.The backlight of main flow is the LED lamp at present.And present existing LED-backlit module is as shown in Figure 1; LED lamp bar 3 ' be fixed on heat sink strip 2 ' on; Heat sink strip 2 ' be fixed on backboard 1 ' on, and by reflector plate 41 ', the blooming piece 4 of LGP 42 ' and other combined diaphragms 43 ' form ' directly overlay heat sink strip 2 ' on.The module backlight of this structure causes following two problems easily: the first, when LED lamp bar 3 ' is for a long time worked under hot environment, along with temperature constantly raises, LED lamp bar 3 ' luminosity can also can decay gradually service life simultaneously by weakening; Second; Because heat sink strip 2 ' with blooming piece 4 ' directly contact, LED lamp bar 3 ' heat through heat sink strip 2 ' be transmitted to blooming piece 4 ' on, heat toasts diaphragm; Blooming piece at high temperature easy deformation produces local shade; Cause brightness disproportionation, liquid crystal display at high temperature also light leakage phenomena can occur simultaneously, the bright dark uniformity that influence is whole.
The utility model content
The purpose of the utility model is to solve existing LED-backlit module heat sink strip and directly contacts with blooming piece, and the bad and shortcoming that possibly produce light leakage phenomena of radiating effect provides the LED-backlit module.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of LED-backlit module; Comprise blooming piece and the LED lamp bar that places said blooming piece both sides to be oppositely arranged; Also comprise two external heat sink strips, the backboard that is oppositely arranged and place the snoot on the said LED lamp bar; Said external heat sink strip comprises orthogonal vertical panel and bottom panel; Said LED lamp bar is fixed on the relative side of vertical panel of two said external heat sink strips, and said backboard places between said external heat sink strip bottom panel and the blooming piece.
Further, said snoot end face both sides are respectively equipped with two light barriers, and another side is provided with at least two reference columns.
Particularly, said two snoot light barrier opposite sides have reflecting coating.
Further, has the through hole that cooperatively interacts with said snoot reference column on the said LED lamp bar.
Further, has the through hole that cooperatively interacts with said snoot reference column on the said external heat sink strip vertical panel.
Further, the reference column of said snoot plugs in the through hole that is fixed in said LED lamp bar and external heat sink strip.
Further, said backboard has the boss of the said blooming piece in location.
The beneficial effect of the utility model is:
1), the utility model provides a kind of LED-backlit module; Heat sink strip is placed the outside of module backlight; The arrangement space and the area of dissipation of module internal optics backlight have been increased on the one hand; External on the other hand heat sink strip contacts with outside, and good heat dissipation effect has guaranteed the luminosity of LED lamp bar and the service life that prolongs LED lamp bar;
2), external heat sink strip of the utility model and the blooming piece in the module backlight are separated by backboard; Avoided LED lamp bar heat to be directly transferred to the situation that causes toasting diaphragm on the blooming piece through heat sink strip to the full extent; Reduced the situation generation that diaphragm is out of shape because of baking, therefore guaranteed that blooming piece brightness is even.
3), the utility model is provided with snoot on LED lamp bar, prevent LED lamp bar light leak, effectively with the light refraction of LED lamp bar scattering to LGP, guarantee that the exiting surface of LED lamp bar light source is parallel with the LGP incidence surface, make that the LGP light source is even.
Description of drawings
Fig. 1 is the cutaway view of prior art LED-backlit module;
Fig. 2 is the half sectional view of the LED-backlit module that provides of the utility model embodiment;
Fig. 3 is the structural representation of the snoot that provides of the utility model embodiment;
Among the figure: 1 '-backboard, 2 '-heat sink strip, 3 '-LED lamp bar, 4 '-blooming piece, 41 '-reflector plate, 42 '-LGP, 43 '-other combined diaphragms, 1-backboard, 11-backboard positioning boss, the external heat sink strip of 2-, 21-vertical panel, 22-bottom panel, 3-LED lamp bar, 4-blooming piece, 41-reflector plate, 42-LGP, other combined diaphragms of 43-, 5-snoot, 51 (52)-light barriers, 511 (521)-reflecting coatings, 53-reference column.
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.
As shown in Figure 2; Because the LED-backlit module that the utility model embodiment is provided is complete symmetrical structure; So for simplifying half sectional view; Convenient understanding, Fig. 2 is a kind of LED-backlit module that the utility model provides, and comprises blooming piece 4 and the LED lamp bar 3 that places said blooming piece 4 both sides to be oppositely arranged; Also comprise two external heat sink strips 2, the backboard 1 that is oppositely arranged and place the snoot 5 on the said LED lamp bar 3; Said external heat sink strip 2 comprises orthogonal vertical panel 21 and bottom panel 22, and said LED lamp bar 3 is fixed on the relative side of vertical panel 21 of two said external heat sink strips 2, and said backboard 1 places between said external heat sink strip 2 bottom panels 22 and the blooming piece 4.Blooming piece 4 comprises reflector plate 41, LGP 42 and other combined diaphragms 43 in the utility model.Can know by figure; The utility model places external heat sink strip 2 in the outside of entire aphototropism mould; The prior art heat sink strip is compared in backboard 1 inner structure relatively; The arrangement space of module internal optics backlight increases to some extent in the utility model, has therefore increased the area of dissipation of module backlight, better heat radiation.And external heat sink strip 2 places the radiating effect of structural design in the outside to place the structure in the backboard good than prior art, guaranteed luminosity stable of LED lamp bar 3, also can prolong the service life of LED lamp bar 3.Moreover; External heat sink strip 2 is separated through backboard 1 with blooming piece 4; The heat that has produced when having avoided 3 work of LED lamp bar to the full extent is directly transferred to the situation that causes toasting diaphragm on the blooming piece 4 through external heat sink strip 2; Avoided the situation generation of diaphragm thus, guaranteed that blooming piece brightness when work is even because of the baking distortion.Said backboard 1 has the boss 11 of the said blooming piece 4 in location.Because compare than prior art dorsulum 1 ' the place module outside, the backboard 1 of the utility model places between external heat sink strip 2 and the optics matrix 4, so backboard 1 is provided with boss 11 blooming piece 4 is located.
See also Fig. 3, said snoot 5 end face both sides are respectively equipped with two light barriers 51 (52), and another side is provided with at least two reference columns 53.Said two snoot light barriers, 51 (52) opposite sides have reflecting coating 511 (521).Among the utility model embodiment, be on the external heat sink strip 2 for said snoot 5 is fixed in LED lamp bar 3.On said LED lamp bar 3, has the through hole (not shown) that cooperatively interacts with said snoot reference column 53.On said external heat sink strip 2 vertical panels 21, has the through hole (not shown) that cooperatively interacts with said snoot reference column 53.The reference column 53 of said snoot plugs in the through hole that is fixed in said LED lamp bar 3 and external heat sink strip 2.Because external heat sink strip 2 is placed the module backlight outside, light leakage phenomena appears in order to prevent to place the LED lamp bar 3 on the external heat sink strip 2, on LED lamp bar 3, be provided with snoot 5.The utility model adopts the snoot 5 of white silica gel material, and is light tight, can be well the light of scattering on the LED lamp bar 3 be reflexed on the LGP 42.The structure of snoot 5 concave character types can guarantee that the exiting surface of LED lamp bar 3 light sources is parallel with the incidence surface of LGP 42 simultaneously, makes that LGP 42 light sources are even.
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 (7)
1. LED-backlit module; Comprise blooming piece and the LED lamp bar that places said blooming piece both sides to be oppositely arranged; It is characterized in that also comprise two external heat sink strips, the backboard that is oppositely arranged and place the snoot on the said LED lamp bar, said external heat sink strip comprises orthogonal vertical panel and bottom panel; Said LED lamp bar is fixed on the relative side of vertical panel of two said external heat sink strips, and said backboard places between said external heat sink strip bottom panel and the blooming piece.
2. LED-backlit module as claimed in claim 1 is characterized in that: said snoot end face both sides are respectively equipped with two light barriers, and another side is provided with at least two reference columns.
3. LED-backlit module as claimed in claim 2 is characterized in that: said two snoot light barrier opposite sides have reflecting coating.
4. LED-backlit module as claimed in claim 2 is characterized in that: have the through hole that cooperatively interacts with said snoot reference column on the said LED lamp bar.
5. LED-backlit module as claimed in claim 2 is characterized in that: have the through hole that cooperatively interacts with said snoot reference column on the said external heat sink strip vertical panel.
6. like claim 2,4,5 each described LED-backlit modules, it is characterized in that: the reference column of said snoot plugs in the through hole that is fixed in said LED lamp bar and external heat sink strip
7. LED-backlit module as claimed in claim 1 is characterized in that: said backboard has the boss of the said blooming piece in location.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200547202U CN202452303U (en) | 2012-02-20 | 2012-02-20 | LED (Light Emitting Diode) backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200547202U CN202452303U (en) | 2012-02-20 | 2012-02-20 | LED (Light Emitting Diode) backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202452303U true CN202452303U (en) | 2012-09-26 |
Family
ID=46868166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200547202U Expired - Fee Related CN202452303U (en) | 2012-02-20 | 2012-02-20 | LED (Light Emitting Diode) backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202452303U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014067173A1 (en) * | 2012-10-31 | 2014-05-08 | 深圳市华星光电技术有限公司 | Led lamp bar and backlight module using same |
| US9028092B2 (en) | 2012-10-31 | 2015-05-12 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | LED light bar and backlight module using the LED light bar |
| CN107037061A (en) * | 2017-06-20 | 2017-08-11 | 芜湖夏鑫新型材料科技有限公司 | Diaphragm examines stand |
| CN107064162A (en) * | 2017-06-20 | 2017-08-18 | 芜湖夏鑫新型材料科技有限公司 | The rotation platform of contrast is examined for diaphragm |
| CN108716631A (en) * | 2018-07-26 | 2018-10-30 | 合肥惠科金扬科技有限公司 | Segmented backlight lamp, backlight module and display |
-
2012
- 2012-02-20 CN CN2012200547202U patent/CN202452303U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014067173A1 (en) * | 2012-10-31 | 2014-05-08 | 深圳市华星光电技术有限公司 | Led lamp bar and backlight module using same |
| US9028092B2 (en) | 2012-10-31 | 2015-05-12 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | LED light bar and backlight module using the LED light bar |
| CN107037061A (en) * | 2017-06-20 | 2017-08-11 | 芜湖夏鑫新型材料科技有限公司 | Diaphragm examines stand |
| CN107064162A (en) * | 2017-06-20 | 2017-08-18 | 芜湖夏鑫新型材料科技有限公司 | The rotation platform of contrast is examined for diaphragm |
| CN108716631A (en) * | 2018-07-26 | 2018-10-30 | 合肥惠科金扬科技有限公司 | Segmented backlight lamp, backlight module and display |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120926 Termination date: 20170220 |