CN217085473U - Novel positioning structure of backlight module - Google Patents
Novel positioning structure of backlight module Download PDFInfo
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- CN217085473U CN217085473U CN202221019096.2U CN202221019096U CN217085473U CN 217085473 U CN217085473 U CN 217085473U CN 202221019096 U CN202221019096 U CN 202221019096U CN 217085473 U CN217085473 U CN 217085473U
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- support bar
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Abstract
The utility model provides a novel location structure of backlight unit, it includes metal backplate, center support bar and liquid crystal display panel, and the center support bar passes through the screw lock and attaches both ends about metal backplate, and the upper and lower both sides of metal backplate are equipped with lamp strip heating panel, and lamp strip heating panel is L shape, attaches at the back of metal backplate through the screw lock, and the outside of metal backplate upper and lower both sides terminal surface is located to the L shape hem of lamp strip heating panel, and its L shape hem inboard is equipped with the lamp strip. The outside of lamp strip heating panel still is equipped with the lamp strip apron, and the handing-over department of lamp strip apron and center support bar is equipped with the plastic part, and the plastic part is the right angle shape, presses the outside of covering at lamp strip apron and center support bar, and passes through screw and metal backplate fixed connection. The utility model discloses an attach the lamp strip in the upper and lower both sides lock of module, the bright optical diaphragm of the high light of cooperation is very big promotes module luminance, and novel structure location installation is simpler simultaneously, and assembly efficiency is high, and the mould input cost is little.
Description
Technical Field
The utility model relates to a backlight unit technical field, in particular to novel location structure of backlight unit.
Background
With the continuous maturity of the liquid crystal display industry, various liquid crystal manufacturers continuously develop new products to meet the market demand. The side that current backlight unit was used commonly goes into and straight following formula module structural style, and the lock of side income formula lamp strip is on metal backplate's side turn-ups, and several LED lamp strips of straight following formula module structure pass through the screw or the sticky tape is fixed on metal backplate, forms complete optical member cavity and provides even light source for liquid crystal display panel, when needs promote module luminance, can correspond through using the highlight diaphragm or increasing LED granule quantity.
But the light bar is only locked on one side in the existing side-entry module structure, and the brightness of the module is difficult to be greatly improved simply through a high-brightness diaphragm.
Disclosure of Invention
The utility model aims at solving the not enough of above-mentioned technique, provide a novel location structure of backlight unit, attach the lamp strip through the upper and lower both sides lock at the module, the bright optical diaphragm of high bright in cooperation greatly promotes the luminance of module, and novel structure location installation is simpler simultaneously, and assembly efficiency is high, and the mould input cost is little.
Therefore, the utility model provides a novel location structure of backlight unit, it includes metal backplate, center support bar and liquid crystal display panel, and the center support bar passes through the screw lock and attaches both ends about metal backplate, and the upper and lower both sides of metal backplate are equipped with lamp strip heating panel, and lamp strip heating panel is L shape, attaches at the back of metal backplate through the screw lock, and the outside of metal backplate upper and lower both sides terminal surface is located to the L shape hem of lamp strip heating panel, and its L shape hem inboard is equipped with the lamp strip. The outside of lamp strip heating panel still is equipped with the lamp strip apron of L shape, and the handing-over department of lamp strip apron and center support bar is equipped with the plastic part, and the plastic part is the right angle shape, presses the outside of covering at lamp strip apron and center support bar, and just passes through screw and metal backboard fixed connection. The front end faces of the light bar cover plate and the middle frame supporting bars are attached with a liquid crystal panel through double faced adhesive tapes, an optical piece cavity is formed among the metal back plate, the middle frame supporting bars, the light bar heat dissipation plate, the light bar cover plate and the liquid crystal panel, and a reflection sheet, a light guide plate and an optical diaphragm are sequentially arranged in the optical piece cavity.
Preferably, the four corners of the optical membrane are provided with positioning lugs, the positioning grooves are formed in the corresponding positions of the middle frame supporting bars, and the positioning lugs are arranged in the positioning grooves and located between the middle frame supporting bars and the plastic parts.
Preferably, the four corners of the metal back plate extend along the short edge direction to be provided with limit baffles, the L-shaped folded edge of the light bar heat dissipation plate and the lamp strip cover plate are arranged between the two adjacent limit baffles, and the lamp strip cover plate extends to the outer side of the light guide plate.
Preferably, the lamp strip cover plate is attached to the outer side of the L-shaped folding edge of the lamp strip heat dissipation plate through double faced adhesive tape.
Preferably, the preceding terminal surface of center support bar is equipped with right angle location limit, and corresponding location limit draw-in groove has been seted up at the back of plastic part, and right angle location limit card makes the plastic part cladding in the outside of center support bar and lamp strip apron in locating the limit draw-in groove.
Preferably, the front end face of the plastic part is provided with a right-angle sinking platform structure for positioning the liquid crystal panel.
Preferably, the metal back plate, the middle frame supporting bars, the light bar heat dissipation plate and the light bar cover plate are all aluminum profiles.
Preferably, the back of the lamp strip heat dissipation plate is provided with a grid structure.
Preferably, the metal back plate is provided with metal wrapping edges at the outer sides of four edges, and the metal wrapping edges are connected end to end around the whole backlight module.
Preferably, the metal wrapping is locked with the lamp strip radiating plate through screws.
The utility model provides a novel location structure of backlight unit has following beneficial effect:
(1) the utility model discloses simple structure is compact, adopts metal backplate to do the bottom plate, and two minor faces of metal backplate are done with the center support bar and are supported, and two long limits all adopt the lamp strip to go into light, use the lamp strip heating panel of L shape to bear lamp strip and heat conduction, utilize lamp strip apron to compress tightly the light guide plate and avoid the light leak, and center support bar and lamp strip apron bear liquid crystal display panel, and upper and lower both sides lamp strip combines the use of high bright optical diaphragm, promotes the luminance of whole module by a wide margin.
(2) The optical diaphragm adopts the location hangers location installation, utilizes center support bar and plastic part to carry on spacingly to the optical diaphragm, avoids shifting, and the installation is simple and convenient. And the optical film is positioned at the most corner of the module, so that the whole image quality effect is good.
(3) The right-angle sinking platform structure of the plastic part is used for pre-positioning the liquid crystal panel, so that the liquid crystal panel is effectively prevented from shifting, the loss of the double-sided adhesive tape is reduced (the liquid crystal panel needs to be reworked during attaching and shifting), and the product cost is reduced.
(4) The development investment cost of the new die is low, the product cost is further reduced, and the enterprise competitiveness is improved.
(5) Backlight unit overall structure comprises aluminium alloy and sheet metal spare, has promoted the wholeness of module.
(6) The novel structure solves the positioning problem of a plurality of parts simultaneously, and each part is positioned and installed in sequence, so that the operation is simple and convenient, and the assembly efficiency is high.
Drawings
Fig. 1 is an exploded schematic view of the present invention;
FIG. 2 is a schematic structural view of a center frame support bar;
FIG. 3 is a schematic structural view of the front side of the plastic part;
FIG. 4 is a schematic view of a reverse side of a plastic part;
FIG. 5 is a schematic view of the assembly structure of the metal back plate, the middle frame support bar, the light bar heat dissipation plate and the optical diaphragm;
FIG. 6 is a schematic view of the assembly structure of the metal back plate, the middle frame support bar, the light bar cover plate and the plastic part;
FIG. 7 is a schematic view of the vertical cut-open structure of the present invention;
fig. 8 is a schematic cross-sectional structural view of the present invention;
fig. 9 is an overall schematic structural view of the present invention.
The labels in the figure are: 1. the LED backlight module comprises a metal back plate, 11 limiting baffles, 2 middle frame supporting strips, 21 positioning grooves, 22 right-angle positioning edges, 3 liquid crystal panels, 4 light bar radiating plates, 5 light bars, 6 light bar cover plates, 7 plastic parts, 71 positioning edge clamping grooves, 8 optical diaphragms, 81 positioning lugs, 9 light guide plates, 10 metal wrapping edges and 12 reflecting sheets.
Detailed Description
The invention will be further described with reference to the accompanying drawings and specific embodiments to assist understanding of the invention. The method used in the utility model is a conventional method if no special regulation is provided; the raw materials and the apparatus used are, unless otherwise specified, conventional commercially available products.
As shown in fig. 1 and 7-9, the utility model provides a novel positioning structure of backlight module, it includes metal backplate 1, center support bar 2 and liquid crystal display panel 3, center support bar 2 is equipped with two, attaches at metal backplate 1's both ends formation bilateral symmetry structure about through the screw lock respectively, is convenient for assemble and die sinking. The upper side and the lower side of the metal back plate 1 are provided with light bar heat dissipation plates 4, the light bar heat dissipation plates 4 are L-shaped and are attached to the back face of the metal back plate 1 through screw locking, the L-shaped folding edges of the light bar heat dissipation plates 4 are bent and arranged on the outer sides of the upper side end face and the lower side end face of the metal back plate 1, and the inner sides of the L-shaped folding edges are provided with light bars 5 to provide light sources for the whole backlight module. The back of the lamp strip heat dissipation plate 4 is of a grid structure, so that the heat dissipation area is increased, and the heat dissipation of the lamp strip 5 is facilitated. The light source that should set up both sides about whole module is the symmetric distribution, and lamp strip 5 is general from top to bottom, and rotatory 180 installation can, combines high bright optical diaphragm 8's use, and whole backlight unit luminance can easily realize promotion by a wide margin.
The outside of lamp strip heating panel 4 still is equipped with the lamp strip apron 6 of L shape, and one side of lamp strip apron 6 is attached in the L shape hem outside of lamp strip heating panel 4 through the double faced adhesive tape, and the another side of lamp strip apron 6 is buckled and is extended in the front end of lamp strip 5. The handing-over department of lamp strip apron 6 and center support bar 2 still is equipped with plastic part 7, and plastic part 7 adopts the semi-enclosed frame structure, and its preceding terminal surface is the right angle shape, presses the outside of covering at lamp strip apron 6 and center support bar 2, and through single screw and 1 fixed connection of metal backplate, easy operation, assembly efficiency is high. After the plastic part 7 is assembled, the middle frame support bar 2, the lamp strip heat dissipation plate 4, the lamp strip cover plate 6 and the plastic part 7 are fixedly connected with the metal back plate 1, the integrity of the module is improved, and the assembly is convenient.
The front end face of the lamp strip cover plate 6 and the middle frame support strip 2 is attached with the liquid crystal panel 3 through the double faced adhesive tape of 1mm, the liquid crystal panel 3 is supported, the metal back plate 1, the middle frame support strip 2, the lamp strip heat dissipation plate 4, an optical piece cavity is formed between the lamp strip cover plate 6 and the liquid crystal panel 3, a reflection sheet 12, a light guide plate 9 and an optical diaphragm 8 are sequentially arranged in the optical piece cavity, the reflection sheet 12, the light guide plate 9 and the optical diaphragm 8 are installed in the prior art, and the repeated description is not repeated at all.
For this module, the optical diaphragm 8 is positioned and mounted in the following manner. Specifically, as shown in fig. 5 and 6, the four corners of the optical film 8 are extended with positioning lugs 81, the positioning grooves 21 are disposed at the corresponding positions of the middle frame support bar 2, and the positioning lugs 81 are disposed in the positioning grooves 21 and between the middle frame support bar 2 and the plastic part 7. The positioning hanging lug 81 is arranged on a right-angle side, is limited to the optical diaphragm 8 in the X direction and the Y direction, and the plastic part 7 is pressed on the outer side of the front end of the optical diaphragm 8 and is limited to the optical diaphragm 8 in the Z direction, so that the optical diaphragm 8 is well positioned and installed, can not be displaced, and is simple and convenient to operate. Meanwhile, the optical film 8 is positioned at four corners of the module and is covered by the plastic part 7, so that the overall image quality effect is improved.
Furthermore, four corners of the metal back plate 1 extend along the short side direction to form limiting baffles 11, and the L-shaped folded edge of the light bar heat dissipation plate 4 and the light bar cover plate 6 are clamped between two adjacent limiting baffles 11. The arrangement of the limiting baffle 11 is convenient for positioning and installing the lamp strip heat dissipation plate 4 and the lamp strip cover plate 6. Limiting baffle 11 and plastic part 7 combine to carry on spacingly to lamp strip heating panel 4 and lamp strip apron 6 simultaneously X to, Y to and Z to, and the installation is simple and convenient, and assembly efficiency is high. Simultaneously, lamp strip apron 6 extends to the outside of light guide plate 9 and compresses tightly light guide plate 9 through the bubble cotton, avoids whole module light leak, makes the module appear the dark line and influences visual effect.
Further, as shown in fig. 2 and 4, the front end face of the middle frame support bar 2 is provided with a right-angle positioning edge 22, the back of the plastic part 7 is provided with a corresponding positioning edge clamping groove 71, and the right-angle positioning edge 22 is clamped in the positioning edge clamping groove 71 to enable the plastic part 7 to be wrapped on the outer sides of the middle frame support bar 2 and the light bar cover plate 6, so that the plastic part 7 can be conveniently positioned and mounted.
Furthermore, in order to reduce the weight and cost of the whole module and improve the integrity of the module, the metal back plate 1, the middle frame supporting bars 2 and the light bar radiating plates 4 are all made of aluminum profiles; the lamp strip cover plate 6 can be made of aluminum profiles or sheet metal parts, and the plastic parts 7 at the four corners are made of plastic materials.
The metal back plate 1's the four sides outside still is equipped with metal and bordures 10, and metal bordures 10 end to end and locates whole backlight unit around, and metal bordures 10 and passes through the screw and lock with lamp strip heating panel 4 and attach together, and the setting of metal bordure 10 has promoted the wholeness and the aesthetic property of whole module on the one hand, and on the other hand extends to liquid crystal display panel 3's the outside and protects liquid crystal display panel 3's tip through the bubble cotton.
The utility model discloses simple structure adopts aluminium metal backplate 1 to be the bottom plate, two minor faces of metal backplate 1 are done with aluminium alloy center support bar 2 and are supported, two long limits all have the LED lamp strip to go into the light, adopt the lamp strip heating panel 4 of L shape to 5 heat conductivities of lamp strip, utilize lamp strip apron 6 to compress tightly light guide plate 9 and avoid the light leak, center support bar 2 and lamp strip apron 6 are to support and bear liquid crystal display panel 3, the use of the high bright diaphragm of upper and lower both sides LED lamp strip 5 combination promotes the luminance of whole module by a wide margin. The integral structure of the module consists of an aluminum profile and a sheet metal part, so that the integrity of the module is improved; and the investment of new mould development is few, has reduced product cost, has promoted the competitiveness of enterprise, but wide application in backlight unit technical field.
In the description of the present invention, it should be understood that the terms "left", "right", "upper", "lower", "top", "bottom", "front", "rear", "inner", "outer", "back", "middle", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
However, the above description is only an example of the present invention, and the scope of the present invention should not be limited thereto, so that the replacement of the equivalent component or the equivalent change and modification made according to the protection scope of the present invention should be included in the scope of the present invention.
Claims (10)
1. A novel positioning structure of a backlight module is characterized by comprising a metal back plate, a middle frame support bar and a liquid crystal panel, wherein the middle frame support bar is attached to the left end and the right end of the metal back plate through screws in a locking manner, light bar heat dissipation plates are arranged on the upper side and the lower side of the metal back plate and are L-shaped, the light bar heat dissipation plates are attached to the back surface of the metal back plate through screws in a locking manner, L-shaped folding edges of the light bar heat dissipation plates are arranged on the outer sides of the upper side end face and the lower side end face of the metal back plate, light bars are arranged on the inner sides of the L-shaped folding edges, an L-shaped light bar cover plate is further arranged on the outer side of the light bar heat dissipation plates, a plastic part is arranged at the joint of the light bar cover plate and the middle frame support bar frame, the plastic part is in a right-angle shape and is pressed on the outer sides of the light bar cover plate and the middle frame support bar and is fixedly connected with the metal back plate through screws, the front end faces of the light bar cover plate and the middle frame support bar are attached with the liquid crystal panel through double-faced adhesive tape, the metal back plate, the center support strip, the lamp strip heating panel, the lamp strip apron with form the optics cavity between the LCD panel, be equipped with reflector plate, light guide plate and optical diaphragm in proper order in the optics cavity.
2. The novel positioning structure of claim 1, wherein positioning lugs are disposed at four corners of the optical film, positioning grooves are disposed at corresponding positions of the middle frame support bar, and the positioning lugs are disposed in the positioning grooves and between the middle frame support bar and the plastic member.
3. The novel positioning structure of backlight module of claim 1, wherein the four corners of the metal back plate are extended along the short side direction to form limiting baffles, the L-shaped folded edge of the light bar heat dissipation plate and the light bar cover plate are clamped between two adjacent limiting baffles, and the light bar cover plate is extended to the outer side of the light guide plate.
4. The novel positioning structure of a backlight module as claimed in claim 3, wherein the cover plate is attached to the outer side of the L-shaped folded edge of the heat dissipation plate via a double-sided adhesive tape.
5. The novel positioning structure of a backlight module as claimed in claim 1, wherein the front end surface of the middle frame support bar is provided with a right-angled positioning edge, the back surface of the plastic member is provided with a corresponding positioning edge slot, and the right-angled positioning edge is engaged with the positioning edge slot so that the plastic member covers the middle frame support bar and the light bar cover plate.
6. The novel positioning structure of backlight module as claimed in claim 5, wherein the front surface of the plastic member has a rectangular platform structure for positioning the liquid crystal panel.
7. The novel positioning structure of a backlight module as claimed in claim 1, wherein the metal back plate, the middle frame support bars, the light bar heat dissipation plate and the light bar cover plate are all aluminum profiles.
8. The novel positioning structure of backlight module as claimed in claim 1, wherein a grid structure is disposed on the back of the light bar heat dissipation plate.
9. The novel positioning structure of a backlight module as claimed in claim 1, wherein metal covering edges are further disposed on the outer sides of the four sides of the metal back plate, and the metal covering edges are disposed around the whole backlight module in an end-to-end manner.
10. The novel positioning structure of a backlight module as claimed in claim 9, wherein the metal edge covers are locked to the heat dissipating plates of the light bar by screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221019096.2U CN217085473U (en) | 2022-04-29 | 2022-04-29 | Novel positioning structure of backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221019096.2U CN217085473U (en) | 2022-04-29 | 2022-04-29 | Novel positioning structure of backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217085473U true CN217085473U (en) | 2022-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221019096.2U Active CN217085473U (en) | 2022-04-29 | 2022-04-29 | Novel positioning structure of backlight module |
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|---|---|
| CN (1) | CN217085473U (en) |
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- 2022-04-29 CN CN202221019096.2U patent/CN217085473U/en active Active
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