CN204313128U - Side entrance back module and liquid crystal indicator - Google Patents
Side entrance back module and liquid crystal indicator Download PDFInfo
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- CN204313128U CN204313128U CN201420837736.XU CN201420837736U CN204313128U CN 204313128 U CN204313128 U CN 204313128U CN 201420837736 U CN201420837736 U CN 201420837736U CN 204313128 U CN204313128 U CN 204313128U
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- guide plate
- light guide
- locating hole
- radiating piece
- backboard
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Abstract
The utility model discloses a kind of side entrance back module and liquid crystal indicator, described side entrance back module comprises light guide plate, LED lamp bar, backboard and radiating piece, when described light guide plate expands, the both sides on described first direction of described light guide plate produce deformational displacement, because of the position of the close described incidence surface of described radiating piece and described light guide plate, mutually spacing in described first direction, and the relatively described backboard of described radiating piece is removable in described first direction, and it is limited in the second direction of vertical described first direction, so, described light guide plate can drive described radiating piece locking phase on described first direction to produce relative displacement for described backboard, roughly keep desired value constant to make the distance between the incidence surface of described LED lamp bar and described light guide plate, not only make described light guide plate can not extrude described LED lamp bar but also be conducive to leaded light.
Description
Technical field
The utility model relates to liquid crystal indicator technical field, is specifically related to a kind of side entrance back module and liquid crystal indicator.
Background technology
LCD TV is that one has independently spot light, spot light is made it become to be not less than the area source of viewing area by optical module, and by described area source again by LCDs with realize image display device, wherein, device spot light being become area source is referred to as backlight module usually, and backlight module is divided into side entrance back module and down straight aphototropism mode set usually.Wherein, side entrance back module comprises backboard, LED lamp bar, light guide plate and aluminum strip, LED lamp bar to be installed on aluminum strip and to be positioned at the side of light guide plate, aluminum strip is installed on backboard, the center line of LED lamp bar and the center line in light guide plate direction are at same plane, light guide plate is laid on backboard and aluminum strip, and light guide plate expands and can relatively slide by aluminum strip.
Spot light is becoming in the process of area source by side entrance back module, most important link is the process of the light importing light guide plate of spot light, can the direct Influential cases light source of the no smooth importing light guide plate of luminous energy of spot light become area source, affects the service efficiency to the light that LED lamp bar sends simultaneously.The device sending spot light is single lamp of LED lamp bar, and single lamp and correct the coordinating of light guide plate are the key points of the no smooth importing light guide plate of luminous energy of spot light.As everyone knows, a point is when luminescence, and its direction is from all directions, does not have dead angle, as the luminescence of the sun.But in order to the effective use of light sent LED lamp bar, common single lamp ensures that in structural design the angle of divergence of light on the thickness direction of light guide plate is 80 degree, namely beyond 80 degree of this regulation, light is not had, for this reason, correct for light guide plate is needed to put, these 80 degree of light of releasing all are imported in light guide plate by the incidence surface of light guide plate, and its concrete assembly method is as Fig. 1.Calculate when meeting light and importing the critical point of light guide plate completely, if light guide plate is a, single lamp is b to light guide plate distance, and the bond length of single lamp is c, then, can list following equation:
tan40°＝((a-c)÷2)÷b
Suppose that the thickness of light guide plate is a=3mm, the model of single lamp is 7020, then c=1.5mm, and substituting into above formula can obtain:
b＝0.9mm
Therefore as b > 0.9mm, part light will be had to expose away from light-guide edge, this light is without any optical module, the light directly exposed, the phenomenon be observed visually is the uneven glare centered by luminous point, and the phenomenon of whole set of television is that picture brightness is uneven.For avoiding this bad phenomenon to occur, b can be designed to be less than 0.9mm during design, because assembling there will be fit tolerance, therefore b can be contracted to 0.7 ~ 0.8mm in actual design.
But, can swelling be there is in light guide plate when water suction is heated, and the limit expansion rate of light guide plate is 3 ‰ usually, light guide plate is in expansion process, the incidence surface of light guide plate can with LED lamp bar generation relative displacement, the incidence surface being embodied in light guide plate can near LED lamp bar, if the light mode of entering of side entrance back module is that shown in Fig. 1, two minor face enters light, when then light guide plate total length L meets 3 ‰ L=2b, light guide plate will to the extruding of LED lamp bar.
Be necessary in fact to design a kind of new side entrance back module, to solve the risk that current side entrance back module exists light guide plate expansion extruding LED lamp bar.
Utility model content
Main purpose of the present utility model is to provide a kind of side entrance back module and liquid crystal indicator, is intended to solve the problem that current side entrance back module exists the risk of light guide plate expansion extruding LED lamp bar.
For arriving above-mentioned technical purpose, the utility model provides a kind of side entrance back module, comprises light guide plate, LED lamp bar, backboard and radiating piece:
Described light guide plate have exiting surface, with described exiting surface back to the back side and the incidence surface that is positioned on first direction;
Described LED lamp bar just arranges the incidence surface of described light guide plate and is fixedly connected with described radiating piece;
The position of the close described incidence surface of described radiating piece and described light guide plate, mutually spacing in described first direction, the part relative with described backboard of described radiating piece, offers the first elongated hole that length direction extends along described first direction;
Described backboard is matched with described first elongated hole by the first fixture, to make the relatively described backboard of described radiating piece removable in described first direction, and limited in the second direction of vertical described first direction.
Preferably, described first fixture is stepped screw, described stepped screw comprises the screw head deviating from the side of described backboard being positioned at described radiating piece, coordinate with described first elongated hole without spacing section of screw thread, and the thread segment to coordinate with the screwed hole on described backboard, described screw head and describedly limit described radiating piece to the first step portion of direction movement deviating from described backboard without being formed with between spacing section of screw thread, and between described first step portion and described radiating piece, there is gap, described without spacing section of screw thread be formed with the second step portion abutted with described backboard between described thread segment.
Preferably, described first direction be left and right to, described second direction is upward and downward, described incidence surface be described light guide plate in left and right to end face, described exiting surface is the front surface of described light guide plate, and the described back side is the rear surface of described light guide plate.
Preferably, part between the back side at described light guide plate of described radiating piece and described backboard, the first locating dowel of the position of the close described incidence surface of described light guide plate is extended through to described light guide plate, described first locating dowel is in order to be fixedly connected with described radiating piece with described light guide plate, to make the position of the close described incidence surface of described radiating piece and described light guide plate, mutually spacing in described first direction.
Preferably, described light guide plate offers the first locating hole and the second locating hole, described first locating hole is arranged near the upper end of described light guide plate and described incidence surface place, described second locating hole is arranged near the lower end of described light guide plate and described incidence surface place, described fixed part is provided with multiple described first locating dowel, and described first locating hole and described second locating hole correspondence coordinate with multiple described first locating dowel.
Preferably, on above-below direction, gap is reserved with between the lower part of the sidewall of described first locating hole and described first locating dowel.
Preferably, described first locating hole upwards runs through described light guide plate and arranges, and to make the upside of described light guide plate form breach, described second locating hole runs through described light guide plate downwards and arranges, and forms breach to make the downside of described light guide plate.
Preferably, described light guide plate offers the 3rd locating hole and the 4th locating hole, the left and right that described 3rd locating hole is positioned at described light guide plate to center line on and arrange near the upper end of described light guide plate, the left and right that described 4th locating hole is positioned at described light guide plate to center line on and arrange near the lower end of described light guide plate, described backboard is provided with multiple second locating dowels of corresponding described 3rd locating hole and described 4th locating hole setting, described 3rd locating hole and described 4th locating hole correspondence coordinate with described multiple second locating dowel, to make, the left and right of described light guide plate to centerline spacing in left and right directions by described backboard.
Preferably, on above-below direction, gap is reserved with between the lower part of the sidewall of described 3rd locating hole and described second locating dowel.
For arriving above-mentioned technical purpose, the utility model also provides a kind of liquid crystal indicator, and described liquid crystal indicator comprises above-mentioned arbitrary described side entrance back module.
The side entrance back module that the utility model provides and liquid crystal indicator, described side entrance back module comprises light guide plate, LED lamp bar, backboard and radiating piece, described light guide plate has exiting surface, with described exiting surface back to the back side and the incidence surface that is positioned on first direction, described LED lamp bar just arranges the incidence surface of described light guide plate and is fixedly connected with described radiating piece, the position of the close described incidence surface of described radiating piece and described light guide plate, mutually spacing in described first direction, the part relative with described backboard of described radiating piece, offer the first elongated hole that length direction extends along described first direction, described backboard is matched with described first elongated hole by the first fixture, to make the relatively described backboard of described radiating piece removable in described first direction, and it is limited in the second direction of vertical described first direction, when described light guide plate expands, the both sides on described first direction of described light guide plate produce deformational displacement, because of the position of the close described incidence surface of described radiating piece and described light guide plate, mutually spacing in described first direction, and the relatively described backboard of described radiating piece is removable in described first direction, and it is limited in the second direction vertical with described first direction, so, described light guide plate can drive described radiating piece locking phase on described first direction to produce relative displacement for described backboard, roughly keep desired value constant to make the distance between the incidence surface of described LED lamp bar and described light guide plate, not only make described light guide plate can not extrude described LED lamp bar but also be conducive to leaded light.
Accompanying drawing explanation
The structural representation of the side entrance back module that Fig. 1 provides for background technology;
The structural representation of one embodiment of the side entrance back module that Fig. 2 provides for the utility model;
Fig. 3 is the structural representation of the local N1 of the side entrance back module shown in Fig. 2;
Fig. 4 is the cross-sectional schematic of Fig. 3 along A-A face;
Fig. 5 is the structural representation of the stepped screw of the side entrance back module shown in Fig. 2;
Fig. 6 is the structural representation of the local N2 of the side entrance back module shown in Fig. 2;
Fig. 7 is the cross-sectional schematic of Fig. 6 along B-B face;
Fig. 8 is the structural representation of the local N3 of the side entrance back module shown in Fig. 2;
Fig. 9 is the cross-sectional schematic of Fig. 8 along C-C face;
Figure 10 is the structural representation of the local N4 of the side entrance back module shown in Fig. 2;
Figure 11 is the cross-sectional schematic of Figure 10 along D-D face;
Figure 12 is the structural representation of the local N5 of the side entrance back module shown in Fig. 2;
Figure 13 is the cross-sectional schematic of Figure 12 along E-E face.
The realization of the utility model object, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Detailed description of the invention
The technical solution of the utility model is further illustrated below in conjunction with Figure of description and specific embodiment.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
The utility model provides a kind of liquid crystal indicator, described liquid crystal indicator comprises side entrance back module, one embodiment of the side entrance back module that Fig. 2 to Figure 13 provides for the utility model, in the present embodiment, described side entrance back module 100 is bilateral incident type, obviously, the design is not limited thereto, and described side entrance back module 100 also can be single-sided illumination formula.
Refer to Fig. 2 to Fig. 4, described light guide plate 1 has exiting surface 1a, with described exiting surface 1a phase back to back side 1b and the incidence surface 1c that is arranged on first direction (direction at the OX axle place of Fig. 2), described LED lamp bar 2 just arranges the incidence surface 1c of described light guide plate 1 and is fixedly connected with described radiating piece 4, the position of the close described incidence surface 1c of described radiating piece 4 and described light guide plate 1, mutually spacing in described first direction, the part relative with described backboard 3 of described radiating piece 4, offer the first elongated hole 41 that length direction extends along described first direction.Described backboard 3 is matched with described first elongated hole 41 by the first fixture (stepped screw 5), to make the relatively described backboard 3 of described radiating piece 4 removable in described first direction, and limited in the second direction of vertical described first direction.
When described light guide plate 1 expands, the both sides of described light guide plate 1 on described first direction produce deformational displacement, because of described radiating piece 4 and the position of the close described incidence surface 1c of described light guide plate 1, mutually spacing in described first direction, and the relatively described backboard 3 of described radiating piece 4 is removable in described first direction, and it is limited in the second direction of vertical described first direction, so, described light guide plate 1 can drive described radiating piece 4 locking phase on described first direction to produce relative displacement for described backboard 3, roughly keep desired value constant to make the distance between described LED lamp bar 2 and the incidence surface 1c of described light guide plate 1, not only make described light guide plate 1 can not extrude described LED lamp bar 2 but also be conducive to leaded light.
In the present embodiment, refer to Fig. 2, the direction at OX axle place is left and right directions, the direction at OZ axle place is above-below direction, described first direction be left and right to, described incidence surface 1c be described light guide plate 1 in left and right to end face, described exiting surface 1a is the front surface of described light guide plate 1, described back side 1b is the rear surface of described light guide plate 1, follow-up all with described first direction for left and right to, described second direction is upward and downward is that example explains.
See also Fig. 5 further, in the present embodiment, described first fixture is stepped screw 5, described stepped screw 5 comprises the screw head 51 deviating from the side of described backboard 3 being positioned at described radiating piece 4, coordinate with described first elongated hole 41 without spacing section 52, screw thread, and the thread segment 53 to coordinate with the screwed hole on described backboard 3, described screw head 51 and describedly limit described radiating piece 4 to the first step portion 54 of direction movement deviating from described backboard 3 without being formed with between spacing section 52, screw thread, and between described first step portion 54 and described radiating piece 4, there is gap, described without spacing section 52, screw thread be formed with the second step portion 55 abutted with described backboard 3 between described thread segment 53.Because there is gap between described first step portion 54 and described radiating piece 4, and can prevent from described stepped screw 5 from locking rear described radiating piece 4 being clamped and cannot sliding.
Consult Fig. 6 to Fig. 9 in the lump further, in the present embodiment, the position of the close described incidence surface 1c of described radiating piece 4 and described light guide plate 1, mutually spacing to (i.e. described first direction) in left and right, the following structure of concrete employing realizes:
The part between described light guide plate 1 and described backboard 3 of described radiating piece 4, the first locating dowel 42 of the position of the close described incidence surface 1c of described light guide plate 1 is extended through to described light guide plate 1, described first locating dowel 42 is in order to be fixedly connected with described radiating piece 4 with described light guide plate 1, to make the position of the close described incidence surface 1c of described radiating piece 4 and described light guide plate 1, in left and right to mutually spacing, particularly, described light guide plate 1 offers the first locating hole 11 and the second locating hole 12, described first locating hole 11 is arranged near the upper end of described light guide plate 1 and described incidence surface 1c place, described second locating hole 12 is arranged near the lower end of described light guide plate 1 and described incidence surface 1c place, described radiating piece 4 is provided with multiple described first locating dowel 42, described first locating hole 11 and described second locating hole 12 correspondence coordinate with multiple described first locating dowel 42.Thus make, at described light guide plate 1 because of expansion in left and right to when being subjected to displacement, described radiating piece 4 with described light guide plate 1 in left and right to movement.
In addition, in the present embodiment, on above-below direction, gap is reserved with between the lower part of the sidewall of described first locating hole 11 and described first locating dowel 42, thus make, when described light guide plate 1 expands, when upwards there is deformational displacement in the upside of described light guide plate 1, gap between the lower part of the sidewall of described first locating hole 11 and described first locating dowel 42, for described light guide plate 1 upwards deformation reserve certain space, and avoid stopping that described light guide plate 1 is upwards out of shape and described light guide plate 1 is arched upward distortion.
And, in the present embodiment, shaping for convenience of described light guide plate 1, described first locating hole 11 upwards runs through described light guide plate 1 and arranges, breach is formed to make the upside of described light guide plate 1, described second locating hole 12 runs through described light guide plate 1 downwards and arranges, and forms breach to make the downside of described light guide plate 1.
Consult Figure 10 to Figure 13 in the lump further, in the present embodiment, described light guide plate 1 offers the 3rd locating hole 13 and the 4th locating hole 14, the left and right that described 3rd locating hole 13 is positioned at described light guide plate 1 to center line on and arrange near the upper end of described light guide plate 1, the left and right that described 4th locating hole 14 is positioned at described light guide plate 1 to center line on and arrange near the lower end of described light guide plate 1, on described backboard 3, corresponding described 3rd locating hole 13 and described 4th locating hole 14 offer the second locating dowel 31 respectively, described 3rd locating hole 13 and described 4th locating hole 14 correspondence coordinate with described second locating dowel 31, to make, the left and right of described light guide plate 1 to centerline spacing by described backboard about 3, when described light guide plate 1 expands, because the center of the left and right directions of described light guide plate 1 is spacing and can not move by left and right, and ensure that the displacement of the left and right sides of described light guide plate 1 is substantially identical.
In addition, in the present embodiment, on above-below direction, gap is reserved with between the lower part of the sidewall of described 3rd locating hole 13 and described second locating dowel 31, thus make, when described light guide plate 1 expands, when upwards there is deformational displacement in the upside of described light guide plate 1, gap between the lower part of the sidewall of described 3rd locating hole 13 and described second locating dowel 31, for described light guide plate 1 upwards reserved certain space, and avoid stopping described light guide plate 1 to be upwards out of shape and described light guide plate 1 is arched upward distortion.
And, in the present embodiment, shaping for convenience of described light guide plate 1, described 3rd locating hole 13 upwards runs through described light guide plate 1 and arranges, breach is formed to make the upside of described light guide plate 1, described 4th locating hole 14 runs through described light guide plate 1 downwards and arranges, and forms breach to make the downside of described light guide plate 1.
These are only preferred embodiment of the present utility model; not thereby its scope of the claims is limited; every utilize the utility model description and accompanying drawing content to do equivalent structure or equivalent flow process conversion; directly or indirectly be used in the technical field that other are relevant, be all in like manner included in scope of patent protection of the present utility model.
Claims (10)
1. a side entrance back module, comprises light guide plate, LED lamp bar, backboard and radiating piece, it is characterized in that:
Described light guide plate have exiting surface, with described exiting surface back to the back side and the incidence surface that is positioned on first direction;
Described LED lamp bar just arranges the incidence surface of described light guide plate and is fixedly connected with described radiating piece;
The position of the close described incidence surface of described radiating piece and described light guide plate, mutually spacing in described first direction, the part relative with described backboard of described radiating piece, offers the first elongated hole that length direction extends along described first direction;
Described backboard is matched with described first elongated hole by the first fixture, to make the relatively described backboard of described radiating piece removable in described first direction, and limited in the second direction of vertical described first direction.
2. side entrance back module as claimed in claim 1, it is characterized in that, described first fixture is stepped screw, described stepped screw comprises the screw head deviating from the side of described backboard being positioned at described radiating piece, coordinate with described first elongated hole without spacing section of screw thread, and the thread segment to coordinate with the screwed hole on described backboard, described screw head and describedly limit described radiating piece to the first step portion of direction movement deviating from described backboard without being formed with between spacing section of screw thread, and between described first step portion and described radiating piece, there is gap, described without spacing section of screw thread be formed with the second step portion abutted with described backboard between described thread segment.
3. side entrance back module as claimed in claim 1, it is characterized in that, described first direction be left and right to, described second direction is upward and downward, described incidence surface be described light guide plate in left and right to end face, described exiting surface is the front surface of described light guide plate, and the described back side is the rear surface of described light guide plate.
4. side entrance back module as claimed in claim 2, it is characterized in that, part between the back side at described light guide plate of described radiating piece and described backboard, the first locating dowel of the position of the close described incidence surface of described light guide plate is extended through to described light guide plate, described first locating dowel is in order to be fixedly connected with described radiating piece with described light guide plate, to make the position of the close described incidence surface of described radiating piece and described light guide plate, mutually spacing in described first direction.
5. side entrance back module as claimed in claim 4, it is characterized in that, described light guide plate offers the first locating hole and the second locating hole, described first locating hole is arranged near the upper end of described light guide plate and described incidence surface place, described second locating hole is arranged near the lower end of described light guide plate and described incidence surface place, described fixed part is provided with multiple described first locating dowel, and described first locating hole and described second locating hole correspondence coordinate with multiple described first locating dowel.
6. side entrance back module as claimed in claim 5, is characterized in that, be reserved with gap between the lower part of the sidewall of described first locating hole and described first locating dowel on above-below direction.
7. side entrance back module as claimed in claim 5, it is characterized in that, described first locating hole upwards runs through described light guide plate and arranges, and forms breach to make the upside of described light guide plate, described second locating hole runs through described light guide plate downwards and arranges, and forms breach to make the downside of described light guide plate.
8. side entrance back module as claimed in claim 3, it is characterized in that, described light guide plate offers the 3rd locating hole and the 4th locating hole, the left and right that described 3rd locating hole is positioned at described light guide plate to center line on and arrange near the upper end of described light guide plate, the left and right that described 4th locating hole is positioned at described light guide plate to center line on and arrange near the lower end of described light guide plate, described backboard is provided with multiple second locating dowels of corresponding described 3rd locating hole and described 4th locating hole setting, described 3rd locating hole and described 4th locating hole correspondence coordinate with described multiple second locating dowel, to make, the left and right of described light guide plate to centerline spacing in left and right directions by described backboard.
9. side entrance back module as claimed in claim 8, is characterized in that, be reserved with gap between the lower part of the sidewall of described 3rd locating hole and described second locating dowel on above-below direction.
10. a liquid crystal indicator, is characterized in that, described liquid crystal indicator comprise as arbitrary in claim 1 to 9 as described in side entrance back module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420837736.XU CN204313128U (en) | 2014-12-25 | 2014-12-25 | Side entrance back module and liquid crystal indicator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420837736.XU CN204313128U (en) | 2014-12-25 | 2014-12-25 | Side entrance back module and liquid crystal indicator |
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| CN204313128U true CN204313128U (en) | 2015-05-06 |
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| CN201420837736.XU Active CN204313128U (en) | 2014-12-25 | 2014-12-25 | Side entrance back module and liquid crystal indicator |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105954925A (en) * | 2016-06-08 | 2016-09-21 | 青岛海信电器股份有限公司 | Side-in type backlight module and liquid crystal display device |
| CN106680928A (en) * | 2017-03-10 | 2017-05-17 | 深圳市华星光电技术有限公司 | Backlight module and manufacturing method thereof |
| CN111630315A (en) * | 2018-01-19 | 2020-09-04 | 株式会社小糸制作所 | Lamp unit, vehicle lamp, and method for manufacturing lamp unit |
| 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 |
-
2014
- 2014-12-25 CN CN201420837736.XU patent/CN204313128U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105954925A (en) * | 2016-06-08 | 2016-09-21 | 青岛海信电器股份有限公司 | Side-in type backlight module and liquid crystal display device |
| CN106680928A (en) * | 2017-03-10 | 2017-05-17 | 深圳市华星光电技术有限公司 | Backlight module and manufacturing method thereof |
| CN106680928B (en) * | 2017-03-10 | 2019-03-12 | 深圳市华星光电技术有限公司 | Backlight module and preparation method thereof |
| CN111630315A (en) * | 2018-01-19 | 2020-09-04 | 株式会社小糸制作所 | Lamp unit, vehicle lamp, and method for manufacturing lamp unit |
| 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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Address after: 518057, Shiyan Road, Shiyan City, Guangdong, Baoan District Province on the 1st Road, SKYWORTH science and Technology Industrial Park R & D building, two or three, four floor and the first floor of the integrated building, Shenzhen Patentee after: Skyworth LCD Modules (Shenzhen) Co., Ltd. Address before: 518057 Guangdong city of Shenzhen province Nanshan District Gao Xin Road SKYWORTH building A block 13-16 Patentee before: Skyworth LCD Modules (Shenzhen) Co., Ltd. |