CN203364018U - LED (Light Emitting Diode) light bar fixing structure, backlight module and liquid crystal display device - Google Patents
LED (Light Emitting Diode) light bar fixing structure, backlight module and liquid crystal display device Download PDFInfo
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- CN203364018U CN203364018U CN2013204478969U CN201320447896U CN203364018U CN 203364018 U CN203364018 U CN 203364018U CN 2013204478969 U CN2013204478969 U CN 2013204478969U CN 201320447896 U CN201320447896 U CN 201320447896U CN 203364018 U CN203364018 U CN 203364018U
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- led lamp
- fixed
- lamp bar
- fixed leg
- heat sink
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Abstract
The utility model discloses an LED (Light Emitting Diode) light bar fixing structure, a backlight module and a liquid crystal display device. The LED light bar fixing structure comprises a heat radiation plate, wherein the side face of the heat radiation plate, which is used for mounting an LED light bar, is provided with at least two fixed columns; each fixed column is higher than the LED light-emitting surface of the LED light bar; each fixed column comprises a first fixed part and a second fixed part in sequence in the direction which is far away from the heat radiation plate; the outer diameter of each first fixed part is less than that of each second fixed part; a PCB (Printed Circuit Board) of the LED light bar is provided with clamping grooves which correspond to the fixed columns one by one and are adaptive to the fixed columns; the first fixed parts are adaptive to and clamped with the clamping grooves. According to the LED light bar fixing structure, the LED light bar is locked on the heat radiation plate by adopting a structure for clamping the fixed columns and the clamping grooves, so that a dismounting procedure of the LED light bar is simplified, the production efficiency is improved and the production cost is reduced; meanwhile, parts of the fixed columns, which are higher than LED lights on the LED light bar, prevent a light guide plate from being expanded towards the sides of the LED lights when the light guide plate is heated; a phenomenon that the backlight module has light leak caused by the factor that the light guide plate and the LED lights are mutually squeezed is avoided.
Description
Technical field
The utility model relates to technical field of liquid crystal display, especially relates to a kind of LED lamp bar fixed structure, backlight module and liquid crystal indicator.
Background technology
The LED lamp bar of side entrance back module adopts the fixed form of two-sided tape or screw to be fixed on radiator aluminium base plate mostly at present, when the backlight module sample is carried out to hot test, the LGP(LGP) expanded by heating, and existing fixed form is not reserved enough expansion spaces between LGP and LED, tend to make LGP to contact and produce extruding with LED, thereby cause the backlight module sample phenomenon of light leak to occur, affect the display effect of liquid crystal display.In addition, there is assembling in the fixed form that attaches two-sided tape and disassembles difficult problem in assembling and the operation of doing over again, thereby has increased assembling and the cost of labor while doing over again and cause LED lamp bar to damage the extra production cost produced while doing over again.
The utility model content
Main purpose of the present utility model is to provide a kind of LED lamp bar fixed structure, backlight module and liquid crystal indicator, be intended to avoid LGP and LED lamp bar to produce extruding under hot environment and cause backlight module the phenomenon of light leak to occur, simplify the dismounting operation of LED lamp bar simultaneously, enhance productivity and reduce production costs.
To achieve these objectives, the utility model proposes a kind of LED lamp bar fixed structure, comprise heat sink, the side for the mounted LED lamp bar of described heat sink is provided with at least two fixed legs, the height of described fixed leg is greater than the LED light-emitting area height of described LED lamp bar, described fixed leg comprises the first fixed part and the second fixed part successively toward the direction away from described heat sink, the external diameter of described the first fixed part is less than the external diameter of described the second fixed part, the pcb board of described LED lamp bar is provided with and described fixed leg corresponding and adaptive draw-in groove one by one, described the first fixed part engages with described draw-in groove is adaptive.
Preferably, described fixed leg is the circular cone shape setting, cumulative toward the external diameter of the described fixed leg of direction away from described heat sink, and described fixed leg engages with described draw-in groove is adaptive.
Preferably, described fixed leg and described heat sink are wholely set.
Preferably, described fixed leg and described heat sink split arrange, and described fixed leg is fixed by screws on described heat sink.
Preferably, described draw-in groove comprises that one is the snapin part of opening setting and the Access Division be communicated with described snapin part one, the importing direction of described snapin part and the importing direction of described Access Division are inconsistent, the opening of each described snapin part is positioned at the same side of the pcb board of described LED lamp bar, after described fixed leg is imported by described snapin part, with described Access Division is adaptive, engages.
Preferably, described draw-in groove is the L-type setting, and extend along the horizontal direction of parallel described LED lamp bar described snapin part, and extend along the longitudinal direction of parallel described LED lamp bar described Access Division.
Preferably, the length that extend along the longitudinal direction of parallel described LED lamp bar described Access Division is greater than described fixed leg and engages the external diameter at position with described Access Division, and the two sides of the engaging porch of described Access Division are respectively equipped with two and are the bulge-structure be oppositely arranged.
Preferably, the crowning of described bulge-structure is arc surface.
The utility model proposes a kind of backlight module simultaneously, this backlight module comprises LED lamp bar fixed structure, this LED lamp bar fixed structure comprises heat sink, the side for the mounted LED lamp bar of described heat sink is provided with at least two fixed legs, the height of described fixed leg is greater than the LED light-emitting area height of described LED lamp bar, described fixed leg comprises the first fixed part and the second fixed part successively toward the direction away from described heat sink, the external diameter of described the first fixed part is less than the external diameter of described the second fixed part, the pcb board of described LED lamp bar is provided with and described fixed leg corresponding and adaptive draw-in groove one by one, described the first fixed part engages with described draw-in groove is adaptive.
The utility model also proposes a kind of liquid crystal indicator, comprises above-mentioned a kind of backlight module.
A kind of LED lamp bar fixed structure provided by the utility model, be provided with some fixed legs by the side for the mounted LED lamp bar on heat sink, and on the pcb board of LED lamp bar, be provided with and fixed leg corresponding and adaptive draw-in groove one by one, fixed leg engages that with draw-in groove is adaptive LED lamp bar is locked on heat sink, simplified the dismounting operation of LED lamp bar, improved production efficiency and reduced production cost; Because the height of fixed leg is greater than the height of LED lamp bar, after completing assembling, the part that fixed leg exceeds LED lamp on LED lamp bar can be used for limiting LGP to expand to LED lamp side while being heated, thereby has avoided LGP and LED lamp mutually push and cause backlight module the phenomenon of light leak to occur.
The accompanying drawing explanation
Fig. 1 is the structural representation of the utility model LED lamp bar fixed structure;
Fig. 2 is the structural representation of heat sink the first embodiment in Fig. 1;
Fig. 3 is the structural representation of heat sink the second embodiment in Fig. 1;
Fig. 4 is the structural representation of LED lamp bar in Fig. 1;
Fig. 5 is the structural representation of another embodiment of LED lamp bar in Fig. 1.
The realization of the utility model purpose, functional characteristics and advantage, in connection with embodiment, are described further with reference to accompanying drawing.
The specific embodiment
Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
Referring to Fig. 1 and Fig. 2, Fig. 1 is the structural representation of the utility model LED lamp bar fixed structure; Fig. 2 is the structural representation of heat sink the first embodiment in Fig. 1.
A kind of liquid crystal indicator that the present embodiment provides, comprise backlight module, backlight module shown in accompanying drawing comprises heat sink 100, LED lamp bar 200 and LGP 300, described heat sink 100 is aluminium base, be provided with the LED lamp bar fixed structure of fixing described LED lamp bar on it, for locking fixed L ED lamp bar.LED lamp bar fixed structure comprises at least two fixed legs 110 for mounted LED lamp bar 200 on the side that is arranged on heat sink 100, the height of fixed leg 110 is greater than the LED lamp 210 light-emitting area height of LED lamp bar 200, be after LED lamp bar 200 installs, the top of fixed leg 110 exceeds the upper surface of LED lamp 210 on LED lamp bar 200, thereby the light incident sides that guarantees LGP 300 can not contact with LED lamp 210, fixed leg 110 concrete height in actual applications can be determined according to the coupling electrical distance between LED lamp bar 200 and LGP 300, to guarantee higher light coupling efficient, promote display effect.It is emphasized that, the quantity of the fixed leg 110 arranged on heat sink 100 is not limited to quantity mentioned in the present embodiment, the actual quantity of fixed leg 110 should be set according to the concrete size of backlight module, as LED lamp bar 200 during for the large scale liquid crystal display unit, the number of fixed leg 110 should be more, to guarantee the LED lamp bar 200 between two fixed legs 110, obtain more sturdy fixed effect.Fixed leg 110 comprises that toward the direction away from heat sink 100 external diameter of the first fixed part 111 and the second fixed part 112, the first fixed parts 111 is less than the external diameter of the second fixed part 112 successively, and described fixed leg 110 is the setting of multidiameter shape.The pcb board 220 of LED lamp bar 200 is provided with and described fixed leg 110 corresponding and adaptive draw-in groove 221 one by one, the first fixed part 111 engages with draw-in groove 221 is adaptive, limited the movement of LED lamp bar 200 along all directions of its mounting plane, transition end face between the first fixed part 111 and the second fixed part 112 is connected to pcb board 220, limit the movement of LED lamp bar 200 along fixed leg 110 axial directions, thereby reached the purpose that LED lamp bar 200 is fixed on heat sink 100.
Accordingly, because the structure that adopts fixed leg 110 to engage with draw-in groove 221 locks LED lamp bar 200 on heat sink 100, simplified the dismounting operation of LED lamp bar 200, can realize the harmless dismounting of LED lamp bar 200 when backlight module is done over again, improve production efficiency and reduced production cost, the part that simultaneously fixed leg 110 exceeds LED lamp 210 on LED lamp bar 200 can limit LGP 300 to a certain extent to expand to LED lamp 210 sides while being heated, and has avoided because LGP 300 and the mutual extruding of LED lamp 210 cause backlight module the phenomenon of light leak to occur.In addition, adopt the backlight module of the described LED fixed structure of the present embodiment, LGP 300 can be designed to regular rectangular shape, solves well existing LGP and the inconsistent problem of location place's backlight illumination occurs owing to being provided with concavo-convex irregular location structure.
Referring to Fig. 3, Fig. 3 is the structural representation of heat sink the second embodiment in Fig. 1.
Fixed leg 110 in the present embodiment can also be the circular cone shape setting, external diameter toward the direction fixed leg 110 away from heat sink 100 is cumulative, when the tapering of fixed leg 110 coordinates with fixed leg 110 clampings with the draw-in groove 221 on LED lamp bar 200, fixed leg 110 can guarantee that heat sink 100 is close in the bottom surface of LED lamp bar 200 and LED lamp bar 200 can not be advisable along the upper and lower play of the axial direction of fixed leg 110.The fixed leg 110 of this version is simple in structure, dismounting is convenient, has improved production efficiency and has reduced production cost, can guarantee fixed effect preferably simultaneously.
In the present embodiment, fixed leg 110 can be wholely set with heat sink 100, also can with heat sink 100 split settings, each fixed leg 110 is fixed by screws on heat sink 100.The benefit that employing is wholely set is simple in structure, but fixed leg 110 and heat sink 100 one-shot formings, and intensity is higher, guarantees the fastening effect of LED lamp bar 200 lasting stabilities.The benefit that adopts the split setting is that the production technology of heat sink 100 is simpler, and does not need to change the existing structure of heat sink 100 during the structural design of later stage change fixed leg 110, and later maintenance cost is lower, and versatility is stronger.Particularly, when fixed leg 110 adopts split to arrange with heat sink 100, through hole is offered in the position that fixed leg 110 is set at heat sink 100, and the end be connected at fixed leg 110 and heat sink 100 is offered screwed hole, by the screw with the screwed hole adaptation, fixed leg 110 is fixed on heat sink 100.
Referring to Fig. 4, Fig. 4 is the structural representation of LED lamp bar in Fig. 1.
In the present embodiment, described draw-in groove 221 comprises the Access Division 223 that 222He Yu snapin part, snapin part 222 one that are the opening setting are communicated with, the importing direction of snapin part 222 and the importing direction of Access Division 223 are inconsistent, for example become 90 degree, thereby can not deviate from voluntarily after making fixed leg 110 snap in draw-in groove 221, reach the purpose of locking LED lamp bar 200, the opening of each snapin part 222 is positioned at the same side of the pcb board 220 of LED lamp bar 200, and fixed leg 110 engages with Access Division 223 is adaptive after being imported by snapin part 222.
Particularly, draw-in groove 221 is the L-type setting, it should be noted in the discussion above that draw-in groove 221 can also be other versions, and as V-shaped, as long as reach the purpose that restriction fixed leg 110 is deviate from voluntarily outward, therefore not to repeat here.Snapin part 222 along the horizontal direction of parallel LED lamp bar 200 (as arrow in Fig. 4 1. as shown in) extend, Access Division 223 along the longitudinal direction of parallel LED lamp bar 200 (as arrow in Fig. 4 2. as shown in) extend.During assembling LED lamp bar 200, first the opening of the snapin part 222 of each draw-in groove 221 on LED lamp bar 200 is aimed at one by one with fixed leg 110, then roughly along the horizontal direction of LED lamp bar 200, promote LED lamp bar 200, fixed leg 110 222 is snapped in along snapin part, until reach 223 turning point, 222Yu Access Division, snapin part, now again LED lamp bar 200 is roughly promoted to LED lamp bar 200 along the longitudinal direction of LED lamp bar 200, until fixed leg 110 apical graftings are in Access Division, 223 end can complete the fixing of LED lamp bar 200.Therefore the assembly and disassembly of LED lamp bar 200 are more simple and efficient, improved production efficiency, reduced the spoilage of dismounting LED lamp bar 200 while doing over again, and reach the purpose saved production cost.
Referring to Fig. 5, Fig. 5 is the structural representation of another embodiment of LED lamp bar in Fig. 1.
Further, the length that extend along the longitudinal direction of parallel LED lamp bar 200 Access Division 223 is greater than fixed leg 110 and engages the external diameter at position with Access Division 223, so that fixed leg 110 snaps in Access Division 223 fully, and the fixed effect that assurance LED lamp bar 200 is good.The two sides of the engaging porch of Access Division 223 are respectively equipped with two and are the bulge-structure 224 be oppositely arranged, the crowning of this bulge-structure 224 is arc surface, thereby snap in the process of Access Division 223 more smooth and easy at fixed leg 110, certainly this bulge-structure 224 can also be other shapes, as trapezoidal.Because 223 engaging porch is provided with the bulge-structure 224 that restriction fixed leg 110 is deviate from voluntarily in Access Division, therefore can further guarantee the effect that engages of fixed leg 110 and Access Division 223, the crystallized ability of raising LED lamp bar fixed structure.
The utility model proposes a kind of backlight module simultaneously.
The backlight module that the present embodiment provides and liquid crystal indicator, comprise LED lamp bar fixed structure, this fixed structure comprises heat sink, the side for the mounted LED lamp bar of described heat sink is provided with at least two fixed legs, the height of described fixed leg is greater than the LED light-emitting area height of described LED lamp bar, described fixed leg comprises the first fixed part and the second fixed part successively toward the direction away from described heat sink, the external diameter of described the first fixed part is less than the external diameter of described the second fixed part, the pcb board of described LED lamp bar is provided with and described fixed leg corresponding and adaptive draw-in groove one by one, described the first fixed part engages with described draw-in groove is adaptive.
This backlight module and liquid crystal indicator embodiment comprise whole technical schemes of the whole embodiment of above-mentioned LED lamp bar fixed structure, and the technique effect reached is also identical, does not repeat them here.
Should be understood that; these are only preferred embodiment of the present utility model; can not therefore limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model specification and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in scope of patent protection of the present utility model.
Claims (10)
1. a LED lamp bar fixed structure, comprise heat sink, it is characterized in that, the side for the mounted LED lamp bar of described heat sink is provided with at least two fixed legs, the height of described fixed leg is greater than the LED light-emitting area height of described LED lamp bar, described fixed leg comprises the first fixed part and the second fixed part successively toward the direction away from described heat sink, the external diameter of described the first fixed part is less than the external diameter of described the second fixed part, the pcb board of described LED lamp bar is provided with and described fixed leg corresponding and adaptive draw-in groove one by one, described the first fixed part engages with described draw-in groove is adaptive.
2. LED lamp bar fixed structure according to claim 1, is characterized in that, described fixed leg is the circular cone shape setting, cumulative toward the external diameter of the described fixed leg of direction away from described heat sink, and described fixed leg engages with described draw-in groove is adaptive.
3. LED lamp bar fixed structure according to claim 1 and 2, is characterized in that, described fixed leg and described heat sink are wholely set.
4. LED lamp bar fixed structure according to claim 1 and 2, is characterized in that, described fixed leg and described heat sink split arrange, and described fixed leg is fixed by screws on described heat sink.
5. LED lamp bar fixed structure according to claim 1, it is characterized in that, described draw-in groove comprises that one is the snapin part of opening setting and the Access Division be communicated with described snapin part one, the importing direction of described snapin part and the importing direction of described Access Division are inconsistent, the opening of each described snapin part is positioned at the same side of the pcb board of described LED lamp bar, after described fixed leg is imported by described snapin part, with described Access Division is adaptive, engages.
6. LED lamp bar fixed structure according to claim 5, is characterized in that, described draw-in groove is the L-type setting, and extend along the horizontal direction of parallel described LED lamp bar described snapin part, and extend along the longitudinal direction of parallel described LED lamp bar described Access Division.
7. LED lamp bar fixed structure according to claim 6, it is characterized in that, the length that extend along the longitudinal direction of parallel described LED lamp bar described Access Division is greater than described fixed leg and engages the external diameter at position with described Access Division, and the two sides of the engaging porch of described Access Division are respectively equipped with two and are the bulge-structure be oppositely arranged.
8. LED lamp bar fixed structure according to claim 7, is characterized in that, the crowning of described bulge-structure is arc surface.
9. a backlight module, is characterized in that, comprises LED lamp bar fixed structure as described as any one in claim 1 to 8.
10. a liquid crystal indicator, is characterized in that, comprises a kind of backlight module as claimed in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204478969U CN203364018U (en) | 2013-07-25 | 2013-07-25 | LED (Light Emitting Diode) light bar fixing structure, backlight module and liquid crystal display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204478969U CN203364018U (en) | 2013-07-25 | 2013-07-25 | LED (Light Emitting Diode) light bar fixing structure, backlight module and liquid crystal display device |
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| CN203364018U true CN203364018U (en) | 2013-12-25 |
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| CN2013204478969U Expired - Fee Related CN203364018U (en) | 2013-07-25 | 2013-07-25 | LED (Light Emitting Diode) light bar fixing structure, backlight module and liquid crystal display device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106652812A (en) * | 2016-12-01 | 2017-05-10 | 长沙信元电子科技有限公司 | Module set of transparent LED screen |
| CN108027533A (en) * | 2015-09-30 | 2018-05-11 | 夏普株式会社 | Lighting device and display device |
| CN112863383A (en) * | 2021-01-26 | 2021-05-28 | 深圳市天合光电有限公司 | Spherical screen lamp strip and spherical screen lamp strip mounting structure |
-
2013
- 2013-07-25 CN CN2013204478969U patent/CN203364018U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108027533A (en) * | 2015-09-30 | 2018-05-11 | 夏普株式会社 | Lighting device and display device |
| CN106652812A (en) * | 2016-12-01 | 2017-05-10 | 长沙信元电子科技有限公司 | Module set of transparent LED screen |
| CN112863383A (en) * | 2021-01-26 | 2021-05-28 | 深圳市天合光电有限公司 | Spherical screen lamp strip and spherical screen lamp strip mounting structure |
| CN112863383B (en) * | 2021-01-26 | 2022-02-11 | 深圳市天合光电有限公司 | Spherical screen lamp strip and spherical screen lamp strip mounting structure |
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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: 20131225 |