CN208013606U - A kind of heat sink and liquid crystal display - Google Patents
A kind of heat sink and liquid crystal display Download PDFInfo
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- CN208013606U CN208013606U CN201721896711.7U CN201721896711U CN208013606U CN 208013606 U CN208013606 U CN 208013606U CN 201721896711 U CN201721896711 U CN 201721896711U CN 208013606 U CN208013606 U CN 208013606U
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- heat sink
- pipeline
- lamp bead
- heat
- refrigerant
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Abstract
The utility model is related to technical field of liquid crystal display, a kind of heat sink and liquid crystal display are disclosed, lamp bead is provided on heat sink, pipeline is provided in the heat sink, refrigerant is filled in the pipeline, vacuum state is in the pipe sealing and the pipeline.The utility model proposes heat sink, pipeline is set in heat sink, it is filled with refrigerant in pipeline, vacuum state is in pipe sealing and pipeline, when lamp bead operational heat on heat sink, heat sink around lamp bead is heated, refrigerant vaporization inside pipeline, flows, simultaneously along pipeline, heat is absorbed in gasification, the heat around lamp bead is taken away；Refrigerant after vaporization in the relatively low region of temperature, and becomes liquid to the cold along in pipeline flow process, and the heat release in liquefaction process, then flow back, it recycles, it can effectively radiate to lamp bead, improve the reliability of lamp bead, and extend the service life of lamp bead；And the thickness of heat sink, good appearance can be reduced.
Description
Technical field
The utility model is related to technical field of liquid crystal display more particularly to a kind of heat sinks and liquid crystal display.
Background technology
Demand with the development and market of LED light technology to environmental protection and energy saving tends to be apparent, the backlight module of LED light source
Have become nearly 2 years research mainstreams；The backlight module of LED light source has many advantages, such as energy-saving and environmental protection, low-power consumption, existing LED
Liquid crystal display accounting oneself increase rapidly.The light source of current LED liquid-crystal display backlight module enter light mode have side entering type and
Two kinds of straight-down negative, due to being limited by backlight cavity thickness, ultra-thin type is essentially side entering type and enters ray machine type.Due to side entering type
The power consumption of LED light bar is larger, generally selects larger and thicker aluminium section bar in the prior art as radiator, but even if
The radiating requirements of the lamp bead in lamp bar, and aluminium profiles can not be met very well using the radiator of larger, thicker aluminium section bar
The radiator of material is thicker, influences the beauty of liquid crystal display.
Utility model content
The purpose of this utility model is that proposing a kind of heat sink, solves existing radiator and cannot be satisfied lamp bead heat dissipation
The problem of.
For this purpose, the utility model uses following technical scheme：
A kind of heat sink is provided with lamp bead on the heat sink, pipeline is provided in the heat sink, is filled out in the pipeline
Filled with refrigerant, vacuum state is in the pipe sealing and the pipeline.
The utility model proposes heat sink, pipeline is set in heat sink, refrigerant, pipe sealing and pipe are filled in pipeline
Vacuum state is in road, when lamp bead operational heat on heat sink, the heat sink around lamp bead is heated, the refrigerant inside pipeline
Vaporization, flows along pipeline, meanwhile, heat is absorbed in gasification, the heat around lamp bead is taken away；Refrigerant edge after vaporization
It in pipeline flow process, in the relatively low region of temperature, and becomes liquid to the cold, and the heat release in liquefaction process, then flow back
To close to the region of lamp bead, recycle.It, can be effectively to lamp by the heat absorption and heat release of phase transition process of the refrigerant in pipeline
Pearl is radiated, and the reliability of lamp bead is improved, and extends the service life of lamp bead；And the thickness of heat sink can be reduced, outside
Shape is beautiful.
As a kind of preferred embodiment of above-mentioned heat sink, the heat sink includes the heat sink body being connected with each other and flanging knot
Structure is arranged the lamp bead on the folded edges, the pipeline is both provided in the heat sink body and the folded edges.
As a kind of preferred embodiment of above-mentioned heat sink, the pipeline on the pipeline of the heat sink body and the folded edges
It is connected.
As a kind of preferred embodiment of above-mentioned heat sink, the heat sink body and the folded edges are perpendicular.
As a kind of preferred embodiment of above-mentioned heat sink, multiple lamp beads are provided on the heat sink, it is each described
One pipeline is at least set below lamp bead.The structure enables to each lamp bead effectively to be radiated, and improves lamp bead
Reliability, and extend the service life of lamp bead.
As a kind of preferred embodiment of above-mentioned heat sink, it is disposed with insulating layer and conductive layer on the folded edges,
Circuit structure is set on the conductive layer, and the lamp bead is welded in the circuit structure.Lamp bead is welded direct to electricity by the structure
It on line structure, is fixed on heat sink without passing through pcb board, avoids part more, assembled cumbersome situation and occur.
As a kind of preferred embodiment of above-mentioned heat sink, the length direction of the length direction of the pipeline and the heat sink
It is vertically arranged.
As a kind of preferred embodiment of above-mentioned heat sink, the heat sink includes a plurality of pipeline, a plurality of pipeline
It is parallel and be arranged at equal intervals.A plurality of pipeline is parallel and be arranged keeps the heat dissipation of heat sink uniform at equal intervals.
As a kind of preferred embodiment of above-mentioned heat sink, the inside of the folded edges and the junction of the heat sink body
It is provided with bending groove.The setting of bending groove facilitates the bending of heat sink.
A kind of liquid crystal display, including above-mentioned heat sink.The heat dissipation effect of the liquid crystal display is preferable, improves liquid crystal
The reliability of lamp bead in display, and extend the service life of lamp bead.
The beneficial effects of the utility model：
The utility model proposes heat sink, pipeline is set in heat sink, refrigerant, pipe sealing and pipe are filled in pipeline
Vacuum state is in road, when lamp bead operational heat on heat sink, the heat sink around lamp bead is heated, the refrigerant inside pipeline
Vaporization, flows along pipeline, meanwhile, heat is absorbed in gasification, the heat around lamp bead is taken away；Refrigerant edge after vaporization
It in pipeline flow process, in the relatively low region of temperature, and becomes liquid to the cold, and the heat release in liquefaction process, then flow back
To close to the region of lamp bead, recycle.It, can be effectively to lamp by the heat absorption and heat release of phase transition process of the refrigerant in pipeline
Pearl is radiated, and the reliability of lamp bead is improved, and extends the service life of lamp bead；And the thickness of heat sink can be reduced, outside
Shape is beautiful.
Description of the drawings
Fig. 1 is the structural schematic diagram of heat sink provided by the utility model；
Fig. 2 is the partial enlarged view of D points in the utility model Fig. 1；
Fig. 3 is the side view of heat sink provided by the utility model；
Fig. 4 is the sectional view along line B-B in the utility model Fig. 3；
Fig. 5 is the Local map of the front view of heat sink provided by the utility model；
Fig. 6 is the sectional view along line A-A in the utility model Fig. 5.
In figure：
1, heat sink；11, pipeline；12, heat sink body；13, folded edges；14, groove is bent；
2, lamp bead.
Specific implementation mode
Further illustrate the technical solution of the utility model below with reference to the accompanying drawings and specific embodiments.
Present embodiment provides a kind of heat sink 1, can be applied in the liquid crystal display of side entering type, such as Fig. 1 and Fig. 2 institutes
Show, lamp bead 2 is provided on heat sink 1, connecting hole is provided on heat sink 1, for being connected to other structures.
As shown in Figure 3 and Figure 4, be provided with pipeline 11 in heat sink 1, be filled with refrigerant in pipeline 11, the closing of pipeline 11 and
Vacuum state is in pipeline 11, when 2 operational heat of lamp bead on heat sink 1, the heat sink 1 around lamp bead 2 is heated, pipeline 11
Internal refrigerant vaporization, flows along pipeline 11, meanwhile, heat is absorbed in gasification, the heat around lamp bead 2 is taken away；When
Refrigerant after vaporization in the relatively low region of temperature, and becomes liquid, and liquefying to the cold along in 11 flow process of pipeline
Heat release in journey, then flow back into close to the region of lamp bead 2, it recycles.Pass through the heat absorption of phase transition process of the refrigerant in pipeline 11
And heat release, it can effectively radiate to lamp bead 2, improve the reliability of lamp bead 2, and extend the service life of lamp bead 2；And energy
Enough reduce the thickness of heat sink 1, good appearance.For the heat sink in side entrance back module, heat sink 1 one
As it is parallel with liquid-crystalline glasses, in close to vertical state place.In order to enable refrigerant preferably flows back, lamp bead 2 can be arranged
The region of 1 bottom of heat sink.Wherein, the volume that refrigerant is filled in pipeline 11 is the one third of the volume of pipeline 11, Ji Nengbao
Card can effectively radiate to lamp bead 2 when refrigerant vaporizes, and will not to be filled with excessive refrigerant in pipeline 11 so that
When refrigerant vaporizes, more liquid coolant there remains in pipeline 11.Pipeline 11 also needs to vacuumize process, keeps pipeline 11 closed
And it is in vacuum state, if there are air in pipeline 11, it is unfavorable for refrigerant vaporization, influences heat dissipation effect.
The boiling point of refrigerant is relatively low, usually liquid condition, when refrigerant is changed into gaseous state by liquid after heated；When refrigerant to the cold
Liquid is changed by gaseous state afterwards, the heat dissipation to lamp bead 2 is realized by reversible phase transformation.Preferably, in the present embodiment, refrigerant is
R134A (HFA 134a), is widely used, and there is good refrigeration effect, the refrigerant of the utility model to be not limited to
R134A is stated, can also be other refrigerants.
Further, shown in Fig. 4, heat sink 1 includes a plurality of pipeline 11, it is however generally that, row of a plurality of pipeline 11 along lamp bead 2
Column direction is parallel and is arranged at equal intervals, and refrigerant is filled in every pipeline 11, keeps the heat dissipation of heat sink 1 uniform.Pipeline 11
Length direction can be vertically arranged with the orientation of lamp bead 2.Such set-up mode can make the heat of lamp bead 2, Ke Yitong
Refrigerant in piping 11 is transferred to the region far from lamp bead 2, avoids the temperature near lamp bead 2 excessively high, can be imitated with heat radiation
Fruit.Furthermore, it is possible to which a pipeline 11 is at least arranged below each lamp bead 2 as possible so that each lamp bead 2 passes through at least one pipe
Road 11 radiates, and improves the efficiency of heat dissipation, effectively increases the reliability of lamp bead 2, and extends the service life of lamp bead 2.Certainly, if
The size of lamp bead 2 is especially small, then can also multiple lamp beads 2 radiated by a pipeline 11.
Specifically, as shown in Fig. 1, Fig. 5-Fig. 6, heat sink 1 includes the heat sink body 12 and folded edges 13 of interconnection,
Heat sink body 12 and folded edges 13 can be vertically arranged.Heat sink body 12 is for dissipating the light guide plate of liquid crystal display
Heat；Lamp bead 2 is set on folded edges 13, pipeline 11 is both provided in heat sink body 12 and folded edges 13 so that entire heat dissipation
The radiating efficiency of plate 1 improves.When lamp bead 2 works, the heat ratio of folded edges 13 is more, the pipeline 11 and flanging of heat sink body 12
Pipeline 11 in structure 13 is connected, and the heat of folded edges 13 can be quickly transferred on heat sink body 12, and making side
Just.
In order to further increase heat dissipation effect, the region of lamp bead 2, such as folded edges 13 can be set on heat sink 1
On, insulating layer and conductive layer (not shown) are set gradually, circuit structure is set on conductive layer, lamp bead 2 is welded in circuit knot
Structure.Wherein, the area of insulating layer is more than the area of conductive layer, for preventing conductive layer from being contacted with heat sink 1 and circuit structure
Short circuit occurs.In the present embodiment, the width of insulating layer is 10mm, and the width of conductive layer is less than 10mm, and the length of insulating layer is more than
Or the length equal to conductive layer, the structure can prevent conductive layer from being contacted with heat sink 1, circuit structure short circuit.
Insulating layer is by acrylic resin+AL2O3The materials such as other filler+glasses of/ALN/ are made.Wherein, acrylic resin is coating,
AL2O3Other fillers of/ALN/ are used for heat conduction, acrylic resin, AL2O3Other fillers of/ALN/ are attached on glass.
Conductive layer is used for the conduction of circuit structure, it is preferred that conductive layer is made of copper foil material in the present embodiment, Ke Yiman
The sufficient good conductive effect of conductive layer, and it is relatively low using copper foil cost.In the present embodiment, circuit structure is set on the electrically conductive
It is to be carried out by the method for etching, it then will be in the pad solder to circuit structure of lamp bead 2 by welding technique so that lamp bead 2
It is connected on circuit structure.Lamp bead 2 is welded direct on circuit structure by the structure, is fixed without passing through pcb board and heat-conducting glue
It on heat sink 1, avoids using more part, avoids lamp bead 2 and assemble cumbersome situation generation.
As shown in fig. 6, being provided with bending groove 14 on the inside of folded edges 13 and the junction of heat sink body 12.It bends recessed
The setting of slot 14 facilitates the bending of heat sink 1.
The manufacturing process of heat sink 1：1 original state of heat sink is tablet, and parallel on heat sink 1 and interval setting is a plurality of
Pipeline 11 is filled with refrigerant in every pipeline 11, and pipeline 11 is closed and can be taken out the air in pipeline 11 by check valve
Go out to form vacuum state；
Insulating layer, conductive layer are set gradually in the bottom of heat sink 1, conductive knot is arranged by lithographic technique on the electrically conductive
Structure, and multiple lamp beads 2 are welded on conductive structure；
Along 14 structure of the bending groove bending of the length direction of heat sink 1, the top of heat sink 1 is heat sink body 12, under
Portion is folded edges 13；For heat sink 1 after bending groove 14 is bent, multiple lamp beads 2 form lamp bar structure, heat sink body 12 and folding
Pipeline 11 in side structure 13 is connected.
Present embodiment provides also a kind of liquid crystal display, including above-mentioned heat sink 1.The heat dissipation of the liquid crystal display is imitated
Fruit is preferable, improves the reliability of lamp bead 2 in liquid crystal display, and extends the service life of lamp bead 2.
Note that above are only the preferred embodiment of the utility model.It will be appreciated by those skilled in the art that the utility model is not
It is limited to specific embodiment described here, various apparent variations can be carried out for a person skilled in the art, readjusted
With replacement without departing from the scope of protection of the utility model.Therefore, although being carried out to the utility model by above example
It is described in further detail, but the utility model is not limited only to above example, is not departing from the utility model design
In the case of, can also include other more equivalent embodiments, and the scope of the utility model is determined by scope of the appended claims
It is fixed.
Claims (10)
1. a kind of heat sink, the heat sink（1）On be provided with lamp bead（2）, which is characterized in that the heat sink（1）Interior setting
There is pipeline（11）, the pipeline（11）It is interior to be filled with refrigerant, the pipeline（11）Closing and the pipeline（11）It is interior to be in vacuum
State.
2. heat sink according to claim 1, which is characterized in that the heat sink（1）Heat dissipation master including interconnection
Body（12）And folded edges（13）, the folded edges（13）The upper setting lamp bead（2）, the heat sink body（12）With it is described
Folded edges（13）Inside it is both provided with the pipeline（11）.
3. heat sink according to claim 2, which is characterized in that the heat sink body（12）Pipeline（11）With the folding
Side structure（13）On pipeline（11）It is connected.
4. heat sink according to claim 2, which is characterized in that the heat sink body（12）With the folded edges（13）
It is perpendicular.
5. heat sink according to claim 1, which is characterized in that the heat sink（1）On be provided with multiple lamp beads
（2）, each lamp bead（2）One pipeline is at least set below（11）.
6. according to any heat sink in claim 1-5, which is characterized in that the heat sink（1）The lamp is being set
Pearl（2）Region be disposed with insulating layer and conductive layer, circuit structure, the lamp bead are set on the conductive layer（2）Welding
In the circuit structure.
7. according to any heat sink in claim 1-5, which is characterized in that the pipeline（11）Length direction and institute
State lamp bead（2）Orientation be vertically arranged.
8. according to any heat sink in claim 1-5, which is characterized in that the heat sink（1）Including a plurality of described
Pipeline（11）, a plurality of pipeline（11）Along the lamp bead（2）Orientation it is parallel and be arranged at equal intervals.
9. according to any heat sink in claim 2-4, which is characterized in that the folded edges（13）With the heat dissipation
Main body（12）Junction on the inside of be provided with bending groove（14）.
10. a kind of liquid crystal display, which is characterized in that including any heat sink in claim 1-9（1）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721896711.7U CN208013606U (en) | 2017-12-29 | 2017-12-29 | A kind of heat sink and liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721896711.7U CN208013606U (en) | 2017-12-29 | 2017-12-29 | A kind of heat sink and liquid crystal display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208013606U true CN208013606U (en) | 2018-10-26 |
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ID=63881412
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721896711.7U Active CN208013606U (en) | 2017-12-29 | 2017-12-29 | A kind of heat sink and liquid crystal display |
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| Country | Link |
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| CN (1) | CN208013606U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113712451A (en) * | 2021-09-01 | 2021-11-30 | 海信家电集团股份有限公司 | Cook machine |
-
2017
- 2017-12-29 CN CN201721896711.7U patent/CN208013606U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113712451A (en) * | 2021-09-01 | 2021-11-30 | 海信家电集团股份有限公司 | Cook machine |
| CN113712451B (en) * | 2021-09-01 | 2023-10-03 | 海信家电集团股份有限公司 | Chef machine |
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