CN102606963A - Direct type LED liquid crystal backlight module - Google Patents
Direct type LED liquid crystal backlight module Download PDFInfo
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- CN102606963A CN102606963A CN201210101808XA CN201210101808A CN102606963A CN 102606963 A CN102606963 A CN 102606963A CN 201210101808X A CN201210101808X A CN 201210101808XA CN 201210101808 A CN201210101808 A CN 201210101808A CN 102606963 A CN102606963 A CN 102606963A
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Abstract
The invention discloses a direct type LED liquid crystal backlight module, which comprises an outer frame, a middle frame, liquid crystal glass, a back plate, a diffusion plate, an optical diaphragm and LED lamp bars, wherein the liquid crystal glass is fixedly clamped by the middle frame and the outer frame, the diffusion plate is fixedly clamped by the back plate and the middle frame, the optical diaphragm is attached to one surface, close to the liquid crystal glass, on the diffusion plate, the back plate is provided with an opening which is covered by an LED fixing plate, and the LED lamp bars are fixed onto the inner side of the LED fixing plate. The direct type LED liquid crystal backlight module has the advantages that the LED lamp bars going wrong can be quickly detached from the back plate and replaced by non-defective LED lamp bars without completely detaching a reflector, the diffusion plate, the optical diaphragm, the middle frame, the liquid crystal glass, the outer frame and the like, so that rework process is greatly simplified, rework hours are reduced, and probability of causing defectiveness of other materials during rework can be greatly decreased.
Description
Technical field
The invention belongs to technical field of television sets, particularly a kind of straight-down negative LED LCD backlight module.
Background technology
Along with development of science and technology, LED relies on its characteristics ultra-thin, environmental protection and energy saving also to begin to be applied to the TV imaging technique.
As shown in Figure 1; Be straight-down negative LED LCD backlight module cross section partial enlarged drawing in the prior art; This straight-down negative LED LCD backlight module 10 comprises: housing 101, center 102, backboard 103; And the diffuser plate 105 that sets gradually from bottom to up, blooming piece 104, liquid-crystalline glasses 106, be provided with LED lamp bar 107 and reflector plate 108 at the medial surface of said backboard 103, and on said reflector plate 108, be provided with the hole that supplies LED crystal grain 1071 to pass.
If this LED1071 breaks down, the LED lamp bar 107 that just must more renew, LED LCD backlight module 10 is changed quite trouble of LED lamp bar 107 at present.Need elder generation with preceding housing 101, liquid-crystalline glasses 106, center 102, blooming piece 104, diffuser plate 105, reflector plate 108 grades are taken out one by one, could take out LED lamp bar 107 and change.Whole unloading process is not only complicated, and in unloading process, very easily causes the damage of other materials, has a strong impact on machine life.
Therefore, be necessary to provide a kind of LED LCD backlight module of replacing LED lamp bar for convenience detach.
Summary of the invention
Main purpose of the present invention is to provide a kind of straight-down negative LED LCD backlight module, is intended to solve dismounting LED lamp bar complicated technology problem in the prior art.
In order to realize goal of the invention; The present invention provides a kind of straight-down negative LED LCD backlight module, comprising: housing, center, liquid-crystalline glasses, backboard, diffuser plate, blooming piece and LED lamp bar, and said liquid-crystalline glasses is clamped fixing by said center and said housing; Said diffuser plate is clamped fixing by said backboard and said center; And the one side near said liquid-crystalline glasses on it is posted blooming piece, and LED lamp bar comprises a plurality of LED crystal grain and is the wiring board that said a plurality of LED crystal grain provide driving, on said backboard, offers an opening; Said opening is by detachable the covering of said LED fixed head, and said LED lamp bar is fixed on the medial surface of said LED fixed head.
Preferably; Said LED fixed head comprises round end and locking end; Said round end is articulated on the said backboard said LED fixed head is mobilizable; The corresponding position is equipped with screw on said locking end and the said backboard, and passing said screw through screw can be fixed in said LED fixed head on the said backboard.
Preferably, the distribution equidistance of said LED fixed head be provided with a plurality of holes, in the opening distribution of said backboard, the hole of corresponding said LED fixed head is provided with a plurality of screws, passes said hole successively and screw is fixed on said LED fixed head on the said backboard through screw.
Preferably, also comprise reflector plate, said reflector plate is attached on the medial surface of said backboard, and on said reflector plate, offers the hole that supplies said LED crystal grain to pass.
Preferably, the two ends of said reflector plate are clamped fixing by said diffuser plate and said backboard.
Preferably, also comprise a plurality of diffuser plate support columns, said diffuser plate support column comprises a most advanced and sophisticated and stiff end, and the stiff end of said diffuser plate support column is fixed in said LED fixed head, and is most advanced and sophisticated near said diffuser plate.
The present invention also provides another kind of straight-down negative LED LCD backlight module; Comprise: housing, center, liquid-crystalline glasses, backboard, reflector plate, diffuser plate, blooming piece and LED lamp bar; Said liquid-crystalline glasses is clamped fixing by said center and said housing; One side near said liquid-crystalline glasses on the said diffuser plate is posted blooming piece, and is clamped fixingly by said backboard and said center, and said reflector plate is attached on the medial surface of said backboard; LED lamp bar comprises a plurality of LED crystal grain and is the wiring board that said a plurality of LED crystal grain provide driving; The corresponding position offers a plurality of holes on said backboard and said reflector plate, and LED lamp bar is fixed in the lateral surface of said backboard, and the LED crystal grain on the LED lamp bar passes above-mentioned hole.
Preferably, said LED lamp bar locks through screw or is attached on the lateral surface of said backboard through heat-conducting glue.
Preferably, said LED crystal grain is provided with lens.
Preferably, also comprise the diffuser plate support column, said diffuser plate support column comprises a most advanced and sophisticated and stiff end, and the stiff end of said diffuser plate support column is fixed in said LED fixed head, and is most advanced and sophisticated near said diffuser plate.
Straight-down negative LED LCD backlight module of the present invention can be dismantled the LED lamp bar that goes wrong through on backboard, offering the lateral surface that detachable LED fixed head perhaps is fixed in LED lamp bar said backboard fast from backboard, change non-defective unit lamp bar; Need not with reflector plate diffuser plate, blooming piece; Center, liquid-crystalline glasses, materials such as housing are all dismantled; Simplify the technology of doing over again greatly, reduce and do over again man-hour, and also can reduce greatly in the process of rework other materials is caused bad probability.
Description of drawings
Fig. 1 is a straight-down negative LED LCD backlight module cross section partial enlarged drawing in the prior art;
Fig. 2 a is the sectional view when straight-down negative LED LCD backlight module backboard is closed in one embodiment of the invention;
Fig. 2 b is the local A enlarged drawing of straight-down negative LED LCD backlight module cross section in one embodiment of the invention;
Fig. 2 c is the sectional view when straight-down negative LED LCD backlight module backboard is opened in one embodiment of the invention;
Fig. 3 is the cross section enlarged drawing of straight-down negative LED LCD backlight module in another embodiment of the present invention.
The realization of the object of the invention, functional characteristics and advantage will combine embodiment, further specify with reference to accompanying drawing.
The specific embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention 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 present invention, and be not used in qualification the present invention.
The present invention provides a kind of straight-down negative LED LCD backlight module; Comprise: housing, center, liquid-crystalline glasses, backboard, diffuser plate, blooming piece and LED lamp bar; Said liquid-crystalline glasses is clamped fixing by said center and said housing, said diffuser plate is clamped fixing by said backboard and said center, and one side near said liquid-crystalline glasses is posted blooming piece on it; LED lamp bar comprises a plurality of LED crystal grain and is the wiring board that said a plurality of LED crystal grain provide driving; On said backboard, offer an opening, said opening is covered by said LED fixed head, and said LED lamp bar is fixed on the medial surface of said LED fixed head.
The present invention also provides a kind of straight-down negative LED LCD backlight module; Comprise: housing, center, liquid-crystalline glasses, backboard, reflector plate, diffuser plate, blooming piece and LED lamp bar; Said liquid-crystalline glasses is clamped fixing by said center and said housing; One side near said liquid-crystalline glasses on the said diffuser plate is posted blooming piece, and is clamped fixingly by said backboard and said center, and said reflector plate is attached on the medial surface of said backboard; LED lamp bar comprises a plurality of LED crystal grain and is the wiring board that said a plurality of LED crystal grain provide driving; The corresponding position offers a plurality of holes on said backboard and said reflector plate, and LED lamp bar is fixed in the lateral surface of said backboard, and the LED crystal grain on the LED lamp bar passes above-mentioned hole.
Straight-down negative LED LCD backlight module of the present invention can be dismantled the LED lamp bar that goes wrong through on backboard, offering the lateral surface that detachable LED fixed head perhaps is fixed in LED lamp bar said backboard fast from backboard, change non-defective unit lamp bar; Need not with reflector plate diffuser plate, blooming piece; Center, liquid-crystalline glasses, materials such as housing are all dismantled; Simplify the technology of doing over again greatly, reduce and do over again man-hour, and also can reduce greatly in the process of rework other materials is caused bad probability.
Please directly with reference to Fig. 2 a, Fig. 2 b, Fig. 2 c; As shown in the figure; This straight-down negative LED LCD backlight module 20; Comprise: housing 201, center 202, liquid-crystalline glasses 204, backboard 203, reflector plate 207, diffuser plate 206, blooming piece 205 and LED lamp bar 209, LED lamp bar 209 comprise a plurality of LED crystal grain and are the wiring board that said a plurality of LED crystal grain provide driving.
Said liquid-crystalline glasses 204, blooming piece 205, diffuser plate 206 and reflector plate 207 stack from top to bottom successively; One side near said liquid-crystalline glasses 204 on the said diffuser plate 206 is an exiting surface, and said blooming piece 205 is attached on the exiting surface of said diffuser plate 206.
Said center 202 is located between said housing 201 and the said backboard 203; Said center 202 is provided with extension 2021 near the madial wall of diffuser plate 206, and said extension 2021 parts stretch between said liquid-crystalline glasses 204 and the diffuser plate 206, and liquid-crystalline glasses 204 and diffuser plate 206 are separated; And leave certain interval; Prevent blooming piece 205 owing to heat expansion is pushed the liquid-crystalline glasses 204 that is in its top, and liquid-crystalline glasses 204 and this diffuser plate 206 are parallel to each other
Form groove between the extension 2021 of said center 202 and the said housing 201, be used for fixing said liquid-crystalline glasses 204.
Said backboard 203 comprises supporting part 2033 and is positioned at the fixed part 2032 that supporting part 2033 both sides are convex; The one side that the fixed part 2032 of said backboard 203 contacts with said center 202 is an end face 2035; Said end face 2035 is provided with locating hole 2034; These center 202 corresponding said locating holes 2034 are provided with reference column 2022, and said reference column 2022 passes said locating hole 2034 and fixes.
This reference column 2022 is used to limit center 202 displacement in the horizontal direction, and when installation or removal, can make the locating hole 2034 better contrapositions on backboard 203 and the said backboard 203, makes dismounting more convenient.
Form groove between the extension 2021 of said end face 2035 and said center 202, be used for fixing said diffuser plate 206.
The fixed part 2032 of two convex of said backboard 203 makes and forms a mixed light district between said backboard 203 and the said diffuser plate 206; Because LED lamp bar 209 arrays are positioned at the bottom of back light source structure; Through a series of optical modulation; Could obtain the area source that the certain brightness and the uniformity require,, use this mixed light district that the light that led array sends is mixed in order to reach purpose in the even bright dipping of exiting surface.
On the supporting part 2033 of said backboard 203, offer an opening (not shown), said opening is by said LED fixed head 2036 detachable covering, and said LED lamp bar 209 is fixed on the medial surface of said LED fixed head 2036.The area of said opening is greater than the area of said liquid-crystalline glasses 204; In order to make whole liquid-crystalline glasses 204 under the situation of operate as normal, can send uniform light; The shape of the coverage rate of said LED lamp bar 209 on said LED fixed head 2036 and the shape of said liquid-crystalline glasses 204 are complementary; When liquid-crystalline glasses 204 is a rectangle; The coverage rate of LED lamp bar 209 on said LED fixed head 2036 of said opening also is rectangle, and when liquid-crystalline glasses 204 is oval, the coverage rate of LED lamp bar 209 on said LED fixed head 2036 of said opening also be ellipse.
In one embodiment of the invention; Said LED fixed head 2036 comprises round end 210 and locking end 211; Said round end 210 is with said LED fixed head 2036 mobilizable being articulated on the said backboard 203; But form the covering of the fan of a folding, the corresponding position is equipped with screw on said locking end 211 and the said backboard 203, and passing said screw through screw can be fixed in said LED fixed head 2036 on the said backboard 203; Under the normal condition, this LED fixed head 2036 is in the closed condition of closing.
Said reflector plate 207 is attached on the medial surface of said backboard 203, and on said reflector plate 207, offers the hole that supplies said LED crystal grain to pass.
This reflector plate 207 comprises reflecting part 2073, is positioned at the connecting portion 2072 of reflecting part 2073 relative both sides, also is provided with clamping part 2071 in the outside of each connecting portion 2072; This clamping part 2071 is gripped by the end face 2035 of said diffuser plate 206 and said backboard 203; This connecting portion 2072 is an inclined design, is used for said clamping part 2071 is connected with said reflecting part 2073, in other designs; This connecting portion 2072 also can be other designs
The reflecting part 2073 of said reflector plate 207 and the connecting portion 2072 of inclined design are used for the light that the LED lamp sends is reflexed to diffuser plate 206, to increase the utilization rate of light.
Also comprise a plurality of diffuser plate support columns 208, said diffuser plate support column 208 comprises a most advanced and sophisticated and stiff end, and the stiff end of said diffuser plate support column 208 is fixed in the reflecting part 2073 of said reflector plate 207; Fixed form can be fixing or other modes of screw, and in said backboard 203 corresponding positions through hole is set, and just can not replace the fixing afterbody of this screw after backboard 203 closes like this; Simultaneously, also this diffuser plate support column 208 of easy disassembly, said tip is near the incidence surface of said diffuser plate 206; If after using a period of time; Diffuser plate 206 can be withstood by this diffuser plate support column 208 after to a certain degree to rear curved, has effectively prevented diffuser plate 206 distortion after using a period of time; Bend, cause the uneven phenomenon of liquid-crystalline glasses 204 display brightness.
During use, whether break down or want to change the LED lamp, only need lock and hold 211 screw to back out if wonder the LED lamp; LED fixed head 2036 is opened, and at this moment reflecting plate 207 separates with LED fixed head 2036, can directly on LED fixed head 2036, fault LED lamp bar 209 be dismantled; Change non-defective unit lamp bar; Simplify the technology of doing over again greatly, reduce and do over again man-hour, and also can reduce greatly in the process of rework other materials is caused bad probability.
In another one embodiment of the present invention; The distribution equidistance of said LED fixed head 2036 be provided with a plurality of holes; Opening distribution at said backboard; The hole of corresponding said LED fixed head is provided with a plurality of screws, passes said hole successively and screw is fixed on said LED fixed head 2036 on the said backboard 203 through screw.
During use,, only need all screws of LED fixed head 2036 distributions are backed out when finding that the LED lamp breaks down; LED fixed head 2036 is taken off, and at this moment reflecting plate 207 separates with LED fixed head 2036, can directly on LED fixed head 2036, fault LED lamp bar 209 be dismantled; Change non-defective unit lamp bar; Simplify the technology of doing over again greatly, reduce and do over again man-hour, and also can reduce greatly in the process of rework other materials is caused bad probability.
As shown in Figure 3; Cross section enlarged drawing for straight-down negative LED LCD backlight module in another embodiment of the present invention; The difference part of straight-down negative LED LCD backlight module is among this embodiment; The corresponding position offers a plurality of holes on said backboard 303 and said reflector plate, and LED lamp bar 309 locks through screw or is attached on the lateral surface of said backboard through heat-conducting glue, and the LED crystal grain on the LED lamp bar passes above-mentioned hole.
For the light that LED crystal grain is sent seems more even, be equipped with lens on each LED crystal grain.
During use; If whether wonder the LED lamp breaks down or wants to change the LED lamp; Only need the LED lamp bar at abort situation place is directly pulled down, change non-defective unit lamp bar, simplify the technology of doing over again greatly; Reduce and do over again man-hour, and also can reduce greatly in the process of rework other materials is caused bad probability.
More than be merely the preferred embodiments of the present invention; Be not so limit claim of the present invention; Every equivalent structure or equivalent flow process conversion that utilizes specification of the present invention and accompanying drawing content to be done; Or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (10)
1. straight-down negative LED LCD backlight module; Comprise: housing, center, liquid-crystalline glasses, backboard, diffuser plate, blooming piece and LED lamp bar; Said liquid-crystalline glasses is clamped fixing by said center and said housing, said diffuser plate is clamped fixing by said backboard and said center, and one side near said liquid-crystalline glasses is posted blooming piece on it; LED lamp bar comprises a plurality of LED crystal grain and is the wiring board that said a plurality of LED crystal grain provide driving
It is characterized in that, on said backboard, offer an opening, said opening is by detachable the covering of said LED fixed head, and said LED lamp bar is fixed on the medial surface of said LED fixed head.
2. straight-down negative LED LCD backlight module as claimed in claim 1 is characterized in that, said LED fixed head comprises round end and locking end,
Said round end is articulated on the said backboard said LED fixed head is mobilizable,
The corresponding position is equipped with screw on said locking end and the said backboard, and passing said screw through screw can be fixed in said LED fixed head on the said backboard.
3. straight-down negative LED LCD backlight module as claimed in claim 1; It is characterized in that; The distribution equidistance of said LED fixed head be provided with a plurality of holes; In the opening distribution of said backboard, the hole of corresponding said LED fixed head is provided with a plurality of screws, passes said hole successively and screw is fixed on said LED fixed head on the said backboard through screw.
4. like each described straight-down negative LED LCD backlight module in the claim 1 to 3, it is characterized in that also comprise reflector plate, said reflector plate is attached on the medial surface of said backboard, and on said reflector plate, offer the hole that supplies said LED crystal grain to pass.
5. straight-down negative LED LCD backlight module as claimed in claim 4 is characterized in that the two ends of said reflector plate are clamped fixing by said diffuser plate and said backboard.
6. straight-down negative LED LCD backlight module as claimed in claim 4; It is characterized in that, also comprise a plurality of diffuser plate support columns, said diffuser plate support column comprises a most advanced and sophisticated and stiff end; The stiff end of said diffuser plate support column is fixed in said LED fixed head, and is most advanced and sophisticated near said diffuser plate.
7. straight-down negative LED LCD backlight module; Comprise: housing, center, liquid-crystalline glasses, backboard, reflector plate, diffuser plate, blooming piece and LED lamp bar; Said liquid-crystalline glasses is clamped fixing by said center and said housing, the one side near said liquid-crystalline glasses on the said diffuser plate is posted blooming piece, and clamps fixing by said backboard and said center; Said reflector plate is attached on the medial surface of said backboard; LED lamp bar comprises a plurality of LED crystal grain and is the wiring board that said a plurality of LED crystal grain provide driving, it is characterized in that the corresponding position offers a plurality of holes on said backboard and said reflector plate; LED lamp bar is fixed in the lateral surface of said backboard, and the LED crystal grain on the LED lamp bar passes above-mentioned hole.
8. straight-down negative LED LCD backlight module as claimed in claim 7 is characterized in that, said LED lamp bar locks through screw or is attached on the lateral surface of said backboard through heat-conducting glue.
9. like claim 7 or 8 described straight-down negative LED LCD backlight modules, it is characterized in that said LED crystal grain is provided with lens.
10. like claim 7 or 8 described straight-down negative LED LCD backlight modules; It is characterized in that, also comprise the diffuser plate support column, said diffuser plate support column comprises a most advanced and sophisticated and stiff end; The stiff end of said diffuser plate support column is fixed in said LED fixed head, and is most advanced and sophisticated near said diffuser plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210101808XA CN102606963A (en) | 2012-04-09 | 2012-04-09 | Direct type LED liquid crystal backlight module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210101808XA CN102606963A (en) | 2012-04-09 | 2012-04-09 | Direct type LED liquid crystal backlight module |
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| CN102606963A true CN102606963A (en) | 2012-07-25 |
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| CN201210101808XA Pending CN102606963A (en) | 2012-04-09 | 2012-04-09 | Direct type LED liquid crystal backlight module |
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