CN203535347U - Side entry type backlight module and liquid crystal display - Google Patents
Side entry type backlight module and liquid crystal display Download PDFInfo
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- CN203535347U CN203535347U CN201320698250.8U CN201320698250U CN203535347U CN 203535347 U CN203535347 U CN 203535347U CN 201320698250 U CN201320698250 U CN 201320698250U CN 203535347 U CN203535347 U CN 203535347U
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- light guide
- heat sink
- guide plate
- side entrance
- back module
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Abstract
The utility model provides a side entry type backlight module and a liquid crystal display. The side entry type backlight module comprises a back plate, a light guide plate, a light source and a heat dissipation plate. The light guide plate is arranged on the back plate, and the light source is arranged on the heat dissipation plate. The side entry type backlight module further comprises an expansion support, the expansion support is provided with a guide post, and the end of the guide post is provided with a clamping plate. The heat dissipation plate is provided with a first strip-shaped hole, the back plate is provided with a second strip-shaped hole, the guide post is inserted in the first strip-shaped hole and the second strip-shaped hole, the clamping plate is clamped on the back plate, and the expansion support abuts against the heat dissipation plate. The heat dissipation plate is installed on the back plate through the expansion support in a clamped mode, so that the heat dissipation plate can be reliably and stably installed on the back plate; when the light guide plate is heated and expanded, force generated by light guide plate expansion drives the heat dissipation plate to move, upwarp of the light guide plate is avoided, and assembly quality of the side entry type backlight module is improved so as to improve display effect of the liquid crystal display.
Description
Technical field
The utility model relates to demonstration field, relates in particular to a kind of side entrance back module and liquid crystal display.
Background technology
At present, along with the continuous progress of science and technology, liquid crystal display (such as: LCD TV, LCDs etc.) be widely used in daily life.Side entrance back module in display device is important display unit, and backlight module is divided into side entering type and straight-down negative according to light inlet mode difference.For side entrance back module, generally include the parts such as backboard, light source, light guide plate and liquid crystal panel and form, light source is arranged on backboard by heat sink, and the light that light source sends enters into liquid crystal panel by light guide plate.Wherein, the tolerance clearance of light source and light guide plate is very important parameter, only guarantees that the gap of light source and light guide plate is stable could obtain the stable optical parametrics such as brightness, to obtain good display effect.And the heat that light guide plate is produced by light source easily expands, cause the gap of light source and light guide plate reduce so that push light source, and light source is completely fixed on backboard, makes light guide plate there is no expansion space and warpage, occurs the phenomenon of light leak by heat sink.In order to address the above problem, in prior art, conventionally adopt the bolt type fixing mode of sliding that heat sink is arranged on backboard, by slotting on backboard and heat sink, control bolt clipping forcee and utilize the body of bolt of bolt to lead, after light guide plate is expanded, promote heat sink and slide along body of bolt, solve light guide plate expansion warpage issues.But in actual production, bolt clipping forcee can not accurately be controlled, make heat-dissipation aluminum sectional material fixing not firm or fixing too tight, cause sliding poor, still can not effectively solve light guide plate warpage issues, cause side entrance back module assembly quality of the prior art poor, the easy perk of light guide plate.
Summary of the invention
Technical problem to be solved in the utility model is: a kind of side entrance back module and liquid crystal display are provided, in solution prior art, side entrance back module assembly quality is poor, the defect of the easy perk of light guide plate, realize the assembly quality that improves side entrance back module, avoid occurring the phenomenon of light guide plate perk, to improve the display effect of liquid crystal display.
The technical scheme that the utility model provides is, a kind of side entrance back module, comprise backboard, light guide plate, light source and heat sink, described light guide plate is arranged on described backboard, described light source is arranged on described heat sink, also comprise expanding stent, described expanding stent comprises pressing plate, guidepost and clamp, and described guidepost is fixed between described pressing plate and described clamp; On described heat sink, offer the first bar hole, offer the second bar hole on described backboard, described guidepost is inserted in described the first bar hole and described the second bar hole, and described backboard and described heat sink are clipped between described clamp and described pressing plate.
Further, the both sides that are positioned at described the second bar hole on described backboard are provided with clamping boss, and described clamp is stuck on described clamping boss.
Further, on described clamp, be provided with guide protrusions, described clamping boss offers the 3rd bar hole, and described guide protrusions is slidably connected in described the 3rd bar hole.
Further, described guidepost diameter dimension is greater than the width dimensions of described clamp, and the edge of described the second bar hole offers the bar shaped chute being oppositely arranged, and described guidepost is slidably connected in described bar shaped chute.
Further, also comprise contraction support, on described contraction support, be provided with mounting groove, in described light guide plate, be provided with tongue, described tongue is inserted in described mounting groove, and described contraction support is fixed on described heat sink.
Further, on described contraction support, be provided with two claws that are oppositely arranged, between two described claws, form described mounting groove.
Further, described tongue sticks together with relative described claw away from the sidewall of described light source, and described tongue is provided with expansion clearance near between the sidewall of described light source and relative described claw.
Further, be also provided with turning handle on described pressing plate, described turning handle and described guidepost arrange dorsad.
Further, between described light source and described light guide plate, be also provided with pad.
A kind of liquid crystal display that the utility model provides, comprises above-mentioned side entrance back module.
Compared with prior art, side entrance back module and liquid crystal display that the utility model provides, by expanding stent, in the mode clamping, heat sink is arranged on backboard, effectively controls the fastening force between heat sink and backboard, that guarantees that heat sink can be reliable and stable is arranged on backboard; And be heated while expanding when light guide plate, because expanding stent can slide by guidepost in the second bar-shaped trough, heat sink can be moved with respect to backboard, the power that light guide plate expansion produces is delivered on heat sink and is driven heat sink to move by light source, effectively avoid the phenomenon of light guide plate generation perk, realization has improved the assembly quality of side entrance back module, to improve the display effect of liquid crystal display.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the partial side view of the utility model side entrance back module embodiment;
Fig. 2 is the partial sectional view of expanding stent in open mode in the utility model side entrance back module embodiment;
Fig. 3 is the partial sectional view of expanding stent in closed condition in the utility model side entrance back module embodiment;
Fig. 4 is the assembling schematic diagram one of the utility model side entrance back module embodiment dorsulum and heat sink;
Fig. 5 is the local enlarged diagram of a-quadrant in Fig. 4;
Fig. 6 is the assembling schematic diagram two of the utility model side entrance back module embodiment dorsulum and heat sink;
Fig. 7 is the local enlarged diagram in B region in Fig. 6;
Fig. 8 is the structural representation of expanding stent in the utility model side entrance back module embodiment.
Embodiment
For making object, technical scheme and the advantage of the utility model embodiment clearer, below in conjunction with the accompanying drawing in the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
As Figure 1-Figure 8, the present embodiment side entrance back module, comprise backboard 1, light guide plate 2, light source 3 and heat sink 4, light guide plate 2 is arranged on backboard 1, light source 3 is arranged on heat sink 4, also comprise expanding stent 5, expanding stent 5 comprises pressing plate 50, guidepost 51 and clamp 52, and guidepost 51 is fixed between pressing plate 50 and clamp 52; On heat sink 4, offer the first bar hole 41, on backboard 1, offer the second bar hole 11, guidepost 51 is inserted in the first bar hole 41 and the second bar hole 11, and clamp 52 is stuck on backboard 1, pressing plate 50 is resisted against on heat sink 4, and backboard 1 and heat sink 4 are clipped between pressing plate 50 and clamp 52.
Particularly, in the present embodiment side entrance back module, light guide plate 2 is fixedly mounted on backboard 1, for example light guide plate 2 can adopt supporting bracket to be fixed on backboard 1, and supporting bracket can play light guide plate 2 is carried out to effect spacing and that support, on backboard 1, for being installed, the position of heat sink 4 is provided with sunk structure, heat sink 4 is arranged in sunk structure and between light guide plate 2 and backboard 1, light source 3 is fixed on heat sink 4 and is positioned at the light inlet side of light guide plate 2, light source 3 is positioned at the sidepiece of light guide plate 2, the light inlet side of the light that light source 3 sends by light guide plate 2 enters into light guide plate 2 and transmits.And can move with respect to backboard 1 in order to realize heat sink 4, heat sink 4 and backboard 1 firmly link together by expanding stent 5, wherein, expanding stent 5 is clipped in backboard 1 and heat sink 4 between pressing plate 50 and clamp 52, concrete installation process is as follows: first, as shown in Figure 2, heat sink 4 is placed on backboard 1, and adjust the first bar hole 41 and the alignment of the second bar hole 11, the clamp 52 of expanding stent 5 through the first bar hole 41 and the second bar hole 11, is inserted in the first bar hole 41 and the second bar hole 11 guidepost 51 successively; Then, as shown in Figure 3, expanding stent 5 is rotated, preferred, half-twist, is clipped between pressing plate 50 and clamp 52 backboard 1 and heat sink 4, and clamp 52 is clamped on backboard 1, realizes heat sink 4 is installed on backboard 1 by expanding stent 5.Owing to not needing to adopt bolt or screw fastening, avoid occurring the phenomenon of the bad control of fastening force, guarantee to there is suitable fastening force between backboard 1 and heat sink 4.Simultaneously, heat sink 4 can move with respect to backboard 1 by expanding stent 5, guidepost 51 at expanding stent 5 can slide in the second bar hole 11, when there is light guide plate 2, be heated while expanding, the bulging force that light guide plate 2 produces passes to heat sink 4, because guidepost 51 can slide in the first bar hole 41, heat sink 4 can be moved along the first bar hole 41 by guidepost 51, thereby avoid occurring that the phenomenon of perk occurs light guide plate 2.
The present embodiment side entrance back module, by expanding stent 5, backboard 1 and heat sink 4 are tightened together, expanding stent 5 can be realized heat sink 4 and move with respect to backboard 1, thereby be heated while expanding in light guide plate 2, heat sink 4 can be corresponding movement, effectively avoid light guide plate 2 that the phenomenon of perks occurs; In addition, owing to not needing to adopt bolt or screw to fix, effectively control the fastening force between heat sink 4 and backboard 1, that guarantees that heat sink 4 can be reliable and stable is arranged on backboard 1.
Based on technique scheme, optionally, in order to ensure the distance between light source 3 and light guide plate 2, remain unchanged, the present embodiment side entrance back module also comprises contraction support 6, shrink on support 6 and be provided with mounting groove (not shown), in light guide plate 2, be provided with tongue 21, tongue 21 is inserted in mounting groove, shrinks support 6 and is fixed on heat sink 4.
Particularly, light guide plate 2 is after expansion, light guide plate 2 will be resisted against on light source 3 and promote heat sink 4 and move, and when light guide plate 2 coolings are shunk, tongue 21 is resisted against and shrinks on support 6 and to shrinking support 6 applied thrusts, shrink support 6 thrust is passed to moving heat sink 4, heat sink 4 is oppositely moved, the tongue 21 of realizing light guide plate 2 will drive heat sink 4 oppositely to move by shrinking support 6, finally make heat sink 4 reset, to guarantee in different temperatures situation, the distance between light guide plate 2 and light source 3 remains unchanged.Owing to arranging and independently shrinking support 6 on heat sink 4, shrink being installed on heat sink 4 that support 6 can be convenient, and can adjust and shrink the position of support 6 on heat sink 4 according to the position of the tongue 21 of light guide plate 2, to guarantee that shrinking support 6 is assembled together accurately with tongue 21.
Further, in order to be effectively stuck on backboard 1 by clamp 52, the both sides that are positioned at second shape hole 11 on backboard 1 are provided with clamping boss 12, and clamp 52 is stuck on clamping boss 12.Concrete, clamping boss 12 protrudes from backboard 1, after guidepost 51 is through the first bar hole 41 and the second bar hole 51, by rotating expanding stent 5, clamp 52 is stuck on clamping boss 12, effectively to increase between clamp 52 and pressing plate 50 heat sink 4 and backboard 1 applied pressure, guarantee that heat sink 4 is by reliable fastening being arranged on backboard 1 of expanding stent 5.Wherein, preferred, on clamp 52, be provided with guide protrusions 521, clamping boss 12 offers the 3rd bar hole 121, and guide protrusions 521 is slidably connected in the 3rd bar hole 121.Concrete, by guide protrusions 521 and the 3rd bar hole 121, coordinate and lead, can guarantee that guidepost 51 can slide smoothly in the second bar hole 11, avoids occurring that guidepost 51 is stuck between the first bar hole 41 and the second bar hole 51; Wherein, can guide protrusions 521 be set in a wherein end of clamp 52, to lead by guide protrusions 521, preferably, for fear of adopting a guide protrusions 521 to occur stuck phenomenon, the both ends of clamp 52 are provided with guide protrusions 521, by two guide protrusions 521, coordinate with the 3rd corresponding bar hole 121, guide protrusions 521 can be slided more smoothly in the 3rd bar hole 121, avoid the phenomenon that occurs that guide protrusions 521 is stuck.In addition, guidepost 51 diameter dimensions in the present embodiment are greater than the width dimensions of clamp 52, and the edge of the second bar hole 11 offers the bar shaped chute 111 being oppositely arranged, and guidepost 51 is slidably connected in bar shaped chute 111.Concrete, bar shaped chute 111 will abut in the surface of guidepost 51, by bar shaped chute 111, limit the shift motion of guidepost 51, and the length of bar shaped chute 111 show after can calculating according to the expansion space of light guide plate 2, avoids occurring that guidepost 51 slips break bounds.Wherein, slip that can be smooth-going in order to ensure heat sink 4, the first bar hole 41, the second bar hole 11 and bar shaped chute 111 in the present embodiment are all perpendicular to light source 3, to guarantee that heat sink 4 can move back and forth along the direction perpendicular to light source 3.And for handled easily personnel rotate expanding stent 5, on pressing plate 50, be also provided with turning handle 53, and turning handle 53 arranges dorsad with guidepost 51, and operating personnel just can conveniently rotate expanding stent 5 by turning handle 53, and clamp 52 is stuck on backboard 1.
Further, in order easily the tongue of light guide plate 2 21 being inserted in mounting groove, on the contraction support 6 in the present embodiment, to be provided with between 61, two claws 61 of two claws that are oppositely arranged and to form mounting groove.Concrete, in the process of light guide plate 2 is installed, only need tongue 21 to be pressed between two claws 61, just can pass through claw 61 reference column tongues 21.And expand for tongue 21 in order to reserve enough spaces, tongue 21 sticks together with relative claw 61 away from the sidewall of light source 3, and tongue 21 is provided with expansion clearance near between the sidewall of light source 3 and relative claw 61, expansion clearance draws after can calculating according to the expansion space of tongue 21, thereby be heated while expanding in light guide plate 2, tongue 21 also can expand between two claws 61, and after the cooling contraction of light guide plate 2, tongue 21 can drive contraction support 6 to move by the claw 61 of the side that reclines.And for fear of light guide plate 2, light source 3 is damaged by pressure; between light source 3 and light guide plate 2, be also provided with pad 31; the height of pad 31 is not less than the height of luminophor in described light source 3; the power that light guide plate 2 expands generation is applied on pad 31; and pad 31 will effectively be protected the luminophor in light source 3, avoid the luminophor in light source 3 to be squeezed bad by light guide plate 2.Preferably, the height of pad 31 is greater than the height of luminophor in light source 3, and light source 3 can be LED lamp bar, and the height of pad 31 should be greater than the height of LED lamp in LED lamp bar.
A kind of liquid crystal display that the utility model provides, comprises above-mentioned side entrance back module.
Compared with prior art, side entrance back module and liquid crystal display that the utility model provides, by expanding stent, in the mode clamping, heat sink is arranged on backboard, effectively controls the fastening force between heat sink and backboard, that guarantees that heat sink can be reliable and stable is arranged on backboard; And be heated while expanding when light guide plate, because expanding stent can slide by guidepost in the second bar-shaped trough, heat sink can be moved with respect to backboard, the power that light guide plate expansion produces is delivered on heat sink and is driven heat sink to move by light source, effectively avoid the phenomenon of light guide plate generation perk, realization has improved the assembly quality of side entrance back module, to improve the display effect of liquid crystal display.
Finally it should be noted that: above embodiment only, in order to the technical solution of the utility model to be described, is not intended to limit; Although the utility model is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the spirit and scope of each embodiment technical scheme of the utility model.
Claims (10)
1. a side entrance back module, comprise backboard, light guide plate, light source and heat sink, described light guide plate is arranged on described backboard, described light source is arranged on described heat sink, it is characterized in that, also comprise expanding stent, described expanding stent comprises pressing plate, guidepost and clamp, and described guidepost is fixed between described pressing plate and described clamp; On described heat sink, offer the first bar hole, offer the second bar hole on described backboard, described guidepost is inserted in described the first bar hole and described the second bar hole, and described backboard and described heat sink are clipped between described clamp and described pressing plate.
2. side entrance back module according to claim 1, is characterized in that, the both sides that are positioned at described the second bar hole on described backboard are provided with clamping boss, and described clamp is stuck on described clamping boss.
3. side entrance back module according to claim 2, is characterized in that, on described clamp, is provided with guide protrusions, and described clamping boss offers the 3rd bar hole, and described guide protrusions is slidably connected in described the 3rd bar hole.
4. side entrance back module according to claim 1, it is characterized in that, described guidepost diameter dimension is greater than the width dimensions of described clamp, and the edge of described the second bar hole offers the bar shaped chute being oppositely arranged, and described guidepost is slidably connected in described bar shaped chute.
5. according to the arbitrary described side entrance back module of claim 1-4, it is characterized in that, also comprise contraction support, on described contraction support, be provided with mounting groove, in described light guide plate, be provided with tongue, described tongue is inserted in described mounting groove, and described contraction support is fixed on described heat sink.
6. side entrance back module according to claim 5, is characterized in that, is provided with two claws that are oppositely arranged on described contraction support, between two described claws, forms described mounting groove.
7. side entrance back module according to claim 6, it is characterized in that, described tongue sticks together with relative described claw away from the sidewall of described light source, and described tongue is provided with expansion clearance near between the sidewall of described light source and relative described claw.
8. side entrance back module according to claim 1, is characterized in that, is also provided with turning handle on described pressing plate, and described turning handle and described guidepost arrange dorsad.
9. side entrance back module according to claim 1, is characterized in that, between described light source and described light guide plate, is also provided with pad.
10. a liquid crystal display, is characterized in that, comprises the side entrance back module as described in as arbitrary in claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320698250.8U CN203535347U (en) | 2013-11-07 | 2013-11-07 | Side entry type backlight module and liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320698250.8U CN203535347U (en) | 2013-11-07 | 2013-11-07 | Side entry type backlight module and liquid crystal display |
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| Publication Number | Publication Date |
|---|---|
| CN203535347U true CN203535347U (en) | 2014-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320698250.8U Expired - Fee Related CN203535347U (en) | 2013-11-07 | 2013-11-07 | Side entry type backlight module and liquid crystal display |
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| Country | Link |
|---|---|
| CN (1) | CN203535347U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104613374A (en) * | 2014-12-22 | 2015-05-13 | 广州创维平面显示科技有限公司 | Backlight module and liquid crystal display device |
| 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 |
-
2013
- 2013-11-07 CN CN201320698250.8U patent/CN203535347U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104613374A (en) * | 2014-12-22 | 2015-05-13 | 广州创维平面显示科技有限公司 | Backlight module and liquid crystal display device |
| CN104613374B (en) * | 2014-12-22 | 2017-03-15 | 广州创维平面显示科技有限公司 | A kind of backlight module and liquid crystal indicator |
| 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 |
|---|---|---|---|
| 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: 20140409 Termination date: 20191107 |