CN115774353B - Integrated liquid-cooled heat dissipation module, backlight module using same and display device - Google Patents
Integrated liquid-cooled heat dissipation module, backlight module using same and display device Download PDFInfo
- Publication number
- CN115774353B CN115774353B CN202111038598.XA CN202111038598A CN115774353B CN 115774353 B CN115774353 B CN 115774353B CN 202111038598 A CN202111038598 A CN 202111038598A CN 115774353 B CN115774353 B CN 115774353B
- Authority
- CN
- China
- Prior art keywords
- liquid
- heat
- heat exchange
- exchange channel
- module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000017525 heat dissipation Effects 0.000 title claims description 67
- 239000007788 liquid Substances 0.000 claims abstract description 257
- 238000003860 storage Methods 0.000 claims abstract description 80
- 239000000110 cooling liquid Substances 0.000 claims abstract description 42
- 238000001816 cooling Methods 0.000 claims abstract description 21
- 230000005855 radiation Effects 0.000 claims abstract description 12
- 229910052782 aluminium Inorganic materials 0.000 claims description 13
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 13
- 238000001125 extrusion Methods 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 abstract 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 238000004891 communication Methods 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005192 partition Methods 0.000 description 4
- 239000013078 crystal Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000009966 trimming Methods 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
Abstract
The invention relates to an integrated liquid cooling type heat radiation module, a backlight module and a display device using the same, wherein the liquid cooling type heat radiation module comprises: the device comprises a liquid storage part, a first liquid pump, a heat exchange channel, a first low-temperature liquid pipeline and a first high-temperature liquid pipeline; when the heat exchange device is used, the heat exchange channel is arranged at the heat source, part of cooling liquid in the liquid storage part flows into the heat exchange channel through the first liquid pump and the first low-temperature liquid pipeline, and part of cooling liquid exchanges heat with the heat source in the heat exchange channel and flows back to the liquid storage part through the first high-temperature liquid pipeline. The liquid cooling type heat radiation module of the invention separates the heat absorption end and the heat radiation end at different positions of one module, the temperature of the cooling liquid in the heat exchange channel rises after the cooling liquid absorbs heat at the heat source, and the cooling liquid is supplied with power by the first liquid pump to flow back into the liquid storage part again so as to be mixed with the low-temperature cooling liquid in the liquid storage part to reduce the temperature.
Description
Technical Field
The present invention relates to a heat dissipation module, a backlight module and a display device, and more particularly to an integrated liquid-cooled heat dissipation module, a backlight module and a display device using the same.
Background
The backlight source of an LCD display is typically an LED light bar (also known as lightbar) mounted at the edge of the screen, which is formed by a long string of LED dies soldered to a long strip of circuit board. Because the LEDs emit light and emit heat at the same time, the conventional technology is to attach the LED light bar to a back plate made of metal materials in the backlight module, so that heat generated by the LEDs is conducted and diffused to the central direction of a screen through the metal back plate, and then the heat is taken away through natural convection or forced convection of a fan, thereby controlling the temperature of the LED crystal grains not to exceed the working range of the LED crystal grains so as to avoid the conditions of light-emitting efficiency attenuation, color cast, short service life, even direct burning and the like of the LED crystal grains. However, in special display screens for business, medical use, outdoor use, ultra-high resolution, etc., because a backlight with higher intensity is required to meet the display performance, that is, the LED light bar needs to have a higher energy density, the higher energy density means a higher heat productivity, which is generated accordingly, and the heat dissipation requirement of the high-power LED is more and more difficult to be achieved by the way of conducting through the metal back plate and dissipating heat by natural convection or fan convection.
Disclosure of Invention
In order to improve the above problems, the present invention provides an integrated liquid-cooled heat dissipation module, a backlight module and a display device using the same.
According to an aspect of the present invention, there is provided an integrated liquid-cooled heat dissipation module, comprising:
a liquid storage part which stores cooling liquid therein;
The first liquid pump is provided with a first liquid inlet and a first liquid outlet, and the first liquid inlet of the first liquid pump is communicated with the cooling liquid in the liquid storage part;
the heat exchange channel is a sealed hollow channel;
the two ends of the first low-temperature liquid pipeline are respectively communicated with the first liquid outlet of the first liquid pump and the heat exchange channel; and
The two ends of the first high-temperature liquid pipeline are respectively communicated with the heat exchange channel and the liquid storage part;
When the heat exchange device is used, the heat exchange channel is arranged at the heat source, part of cooling liquid in the liquid storage part flows into the heat exchange channel through the first liquid pump and the first low-temperature liquid pipeline, and part of cooling liquid exchanges heat with the heat source in the heat exchange channel and flows back to the liquid storage part through the first high-temperature liquid pipeline.
As an alternative technical scheme, the whole heat exchange channel is in a strip shape, the heat exchange channel is provided with a first end part, the first end part is provided with a first opening, the middle part of the heat exchange channel is provided with a first through hole, the first low-temperature liquid pipeline is communicated with the heat exchange channel through the first through hole, and the first high-temperature liquid pipeline is communicated with the heat exchange channel through the first opening.
As an optional technical solution, the heat exchange channel further has a second end opposite to the first end, the second end has a second opening, a second through hole is further provided in the middle of the heat exchange channel, and the liquid cooling heat dissipation module further includes:
The second liquid pump is provided with a second liquid inlet and a second liquid outlet, and the second liquid inlet of the second liquid pump is communicated with the cooling liquid in the liquid storage part; and
The two ends of the second low-temperature liquid pipeline are respectively communicated with the second liquid outlet of the second liquid pump and the heat exchange channel, and the second low-temperature liquid pipeline is communicated with the heat exchange channel through the second through hole; and
The two ends of the second high-temperature liquid pipeline are respectively communicated with the heat exchange channel and the liquid storage part, and the second high-temperature liquid pipeline is communicated with the heat exchange channel through the second opening;
when the heat exchange device is used, part of the cooling liquid in the liquid storage part flows into the heat exchange channel through the second liquid pump and the second low-temperature liquid pipeline, exchanges heat with a heat source in the heat exchange channel, and flows back to the liquid storage part through the second high-temperature liquid pipeline.
As an alternative technical scheme, the liquid storage part is integrally cuboid, the first liquid pump is arranged at the middle position of the liquid storage part to correspond to the first through hole of the heat exchange channel, and the second liquid pump is arranged at the middle position of the liquid storage part to correspond to the second through hole of the heat exchange channel.
As an optional technical scheme, the liquid-cooled heat dissipation module further comprises a connecting portion, and the heat exchange channel and the liquid storage portion are connected into a whole through the connecting portion.
As an alternative technical scheme, the liquid storage part is provided with heat radiation fins.
As an alternative technical scheme, the heat exchange channel, the connecting portion, the liquid storage portion and the heat dissipation fins are formed by an aluminum extrusion profile, and the first low-temperature liquid pipeline and the first high-temperature liquid pipeline are hard pipes.
As an alternative technical scheme, the heat source is in a strip shape, and the heat source is arranged close to the heat exchange channel and has the same extending direction as the heat exchange channel.
According to another aspect of the present invention, the backlight module further includes a back plate and an LED light bar disposed on the back plate, and the liquid-cooled heat dissipation module is fixed on the back surface of the back plate, and the heat exchange channel is adjacent to the LED light bar, the LED light bar is used as a heat source, and the liquid-cooled heat dissipation module is used for dissipating heat of the LED light bar.
According to another aspect of the present invention, a display device is provided, the display device includes a display module and the backlight module described above, the LED light bar in the backlight module is disposed at a side edge of the display module, the liquid cooling heat dissipation module is disposed at a rear side of the backlight module, and the heat exchange channel of the liquid cooling heat dissipation module is disposed at a side edge of the display module corresponding to the LED light bar to dissipate heat of the LED light bar.
In summary, the liquid-cooled heat dissipation module of the present invention separates the heat absorbing end (heat exchange channel) and the heat dissipating end (liquid storage portion), the temperature of the cooling liquid in the heat exchange channel increases after absorbing heat at the heat source, and then the cooling liquid is returned to the liquid storage portion by the power provided by the first liquid pump, and the cooling liquid in the liquid storage portion is continuously dissipated into the air through the wall surface of the liquid storage portion, the heat dissipating fins and the heat dissipating fan on the liquid storage portion, so as to achieve the purpose of heat dissipation.
The invention will now be described in more detail with reference to the drawings and specific examples, which are not intended to limit the invention thereto.
Drawings
Fig. 1 to 3 are schematic diagrams of a liquid-cooled heat dissipation module according to the present invention under different viewing angles;
FIG. 4 is a schematic diagram of the liquid-cooled heat dissipation module and the backlight module of the display device after being combined;
FIG. 5 is a partial cross-sectional view taken along line AA in FIG. 4;
fig. 6 is an enlarged view at B in fig. 5.
Detailed Description
Fig. 1 to 3 are schematic diagrams of a liquid-cooled heat dissipation module according to the present invention under different viewing angles; FIG. 4 is a schematic diagram of the liquid-cooled heat dissipation module and the backlight module of the present invention after being combined; fig. 5 is a partial sectional view taken along line AA in fig. 4, and fig. 6 is an enlarged view taken at B in fig. 5.
Referring to fig. 1 to 6, the present invention provides a liquid-cooled heat dissipation module 1, wherein the liquid-cooled heat dissipation module 1 can be used for dissipating heat of an LED light bar 902 of a backlight module 90 in a display device 2, in this embodiment, a heat source (e.g. the LED light bar 902) is in a bar shape, and the extending direction of the bar-shaped heat source is the same as that of a heat exchange channel 20 in the liquid-cooled heat dissipation module 1, so as to be capable of dissipating heat of the heat source well, and the heat source is disposed adjacent to the heat exchange channel 20 in the liquid-cooled heat dissipation module 1. Specifically, the liquid-cooled heat dissipation module 1 of the present invention includes a liquid storage portion 10, a first liquid pump 30, a heat exchange channel 20, a first low-temperature liquid pipeline 40 and a first high-temperature liquid pipeline 50, wherein the heat exchange channel 20 is a sealed hollow channel, and the heat exchange channel 20 is installed at a heat source (e.g. a position close to the LED light bar 902) when the liquid-cooled heat dissipation module 1 of the present invention is in use. The liquid storage portion 10 (the liquid storage portion 10 may be, for example, a large-sized water tank) stores therein a cooling liquid (preferably, the cooling liquid may be water) for heat dissipation; the first liquid pump 30 has a first liquid inlet (not shown) and a first liquid outlet (not shown), the first liquid inlet of the first liquid pump 30 is communicated with the cooling liquid in the liquid storage portion 10, and the first liquid outlet of the first liquid pump 30 is communicated with one end of the first cryogenic liquid pipeline 40, so that when the first liquid pump 30 operates, part of the cooling liquid in the liquid storage portion 10 can be filled into the first cryogenic liquid pipeline 40, and meanwhile, the other end of the first cryogenic liquid pipeline 40 is communicated with the heat exchange channel 20, so that the cryogenic liquid in the first cryogenic liquid pipeline 40 can flow into the heat exchange channel 20 to exchange heat with a heat source; furthermore, one end of the first high-temperature liquid pipeline 50 is communicated with the heat exchange channel 20, and the other end of the first high-temperature liquid pipeline 50 is communicated with the liquid storage portion 10, so that the cooling liquid in the heat exchange channel 20 flows back to the liquid storage portion 10 through the first high-temperature liquid pipeline 50 after heat exchange with a heat source (it should be noted that the temperature of the low-temperature cooling liquid in the first low-temperature liquid pipeline 40 is raised after passing through the heat exchange channel 20, so that the temperature of the cooling liquid in the first high-temperature liquid pipeline 50 is higher than that of the cooling liquid in the first low-temperature liquid pipeline 40).
As can be seen from the above, the liquid storage portion 10, the first liquid pump 30, the heat exchange channel 20, the first low-temperature liquid pipeline 40 and the first high-temperature liquid pipeline 50 together form a first circulating heat dissipation pipeline, by means of which heat at the heat source (in this embodiment, the heat source is the LED light bar 902 of the backlight module 90 in the display device 2) is taken away by the cooling liquid in the heat exchange channel 20, and the part of the warmed cooling liquid returns to the larger liquid storage portion 10 for cooling through the first high-temperature liquid pipeline 50, so as to achieve the purpose of heat dissipation.
In addition, in the present embodiment, the cross section of the heat exchange channel 20 is triangular, but not limited to this, and in other embodiments, the cross section of the heat exchange channel may be square or rectangular.
In this embodiment, the liquid-cooled heat dissipation module 1 further includes a connection portion 100, the heat exchange channel 20 and the liquid storage portion 10 are connected into a whole by the connection portion 100, and the heat exchange channel 20 and the liquid storage portion 10 are respectively located at two opposite ends of the connection portion 100. Preferably, the heat exchange channel 20, the connection portion 100 and the liquid storage portion 10 are integrally formed by aluminum extrusion, two ends of the heat exchange channel 20 are originally aluminum extruded sections, the sections are hollow holes, and then the sections are partially processed and sealed to form a liquid inlet and a liquid outlet of the first high-temperature liquid pipeline 50, and the first low-temperature liquid pipeline 40 and the first high-temperature liquid pipeline 50 are hard pipes, for example, the first low-temperature liquid pipeline 40 and the first high-temperature liquid pipeline 50 are made of copper or stainless steel.
It should be noted that, in the existing liquid cooling technology applied to other products than displays, the heat exchange module, the heat dissipation module and the liquid storage module are often separate components, so that plastic hoses are required for the liquid pipelines connected with each other. The plastic hose is easy to leak water or block when being assembled at the connecting pipe position and in bending, and the plastic hose is easy to be broken due to ageing of materials after being operated for a long time in a high-temperature environment.
In contrast, the heat exchange channel 20, the connection portion 100 and the liquid storage portion 10 of the present invention are all formed by trimming a long plate-shaped aluminum extrusion part by machining and cutting part aluminum material, and all parts are fixed on the main structure without mutual movement, so that the first low-temperature liquid pipeline 40, the first high-temperature liquid pipeline 50, the second low-temperature liquid pipeline 70, the second high-temperature liquid pipeline 80 and other communicating liquid pipelines can be manufactured by using a relatively reliable hard pipe, such as a copper pipe or a stainless steel pipe, and the like, and the connection points of the pipelines and the heat exchange channel 20 and the liquid storage portion 10 can be directly connected by a relatively reliable welding process or EPOXY engineering glue by the manufacturer of the heat dissipation module 1, thereby achieving the purposes of simplifying the number of parts, improving the reliability, reducing the manufacturing cost and the like, and the integral structure of the whole module, and simplifying the assembling and replacing maintenance procedure. The heat radiation module is especially suitable for being applied to a special-purpose liquid crystal display which takes a high-power LED lamp strip as a backlight light source. The integrated liquid cooling type heat radiation module 1 can avoid the main defects of the existing liquid cooling heat radiation technology applied to other products of non-display, namely, the problems of lower reliability, higher cost, difficult assembly, maintenance and replacement and the like caused by complex parts, and the reliability of the integrated liquid cooling type heat radiation module 1 in the invention is close to that of the traditional vacuum heat pipe heat radiation module.
In order to further enhance the heat dissipation effect, the liquid storage portion 10 is further provided with a heat dissipation fin 101 and a heat dissipation fan 102. In the present embodiment, the direction of the heat dissipation fins 101 is preferably the same as the extending direction of the liquid storage portion 10, so that the heat exchange channels 20 and the liquid storage portion 10 can be formed together in the same aluminum extruded part, and the heat exchange channels and the liquid storage portion 10 are not required to be adhered to the surface of the liquid storage portion 10 after being manufactured separately, so that the effects of simplifying the number of parts and reducing the thermal resistance between the heat dissipation fins 101 and the liquid storage portion 10 can be achieved. In addition, two cooling fans 102 may be disposed on the liquid storage portion 10, but the number of cooling fans 102 is not limited to this, and the number of fans may be increased or decreased according to actual needs. Meanwhile, other idle positions of the liquid storage portion 10 (idle positions refer to places where no other components are disposed on the liquid storage portion 10) may be covered with the heat dissipating fins 101, and of course, the heat dissipating fins 101 may be disposed only at several positions of the liquid storage portion 10 (instead of the entire idle positions), which may be adjusted according to actual needs, in this embodiment, the heat dissipating fins 101 are firstly covered on a single side surface of the liquid storage portion 10 on the extruded aluminum raw material, and then the heat dissipating fan 102, the first liquid pump 30 and a local area (introduced later) of the second liquid pump 40 are cut flat by machining in a later process.
In addition, in the present embodiment, since the heat source is the LED light bar 902, the LED light bar 902 is generally the hottest in the center and colder at both ends. Therefore, the heat exchange channel 20 of the present invention is in a strip shape as a whole, and the length of the heat exchange channel corresponds to the length of the LED light bar 902. Meanwhile, the heat exchange channel 20 has a first end 201 and a second end 202 opposite to each other, the first end 201 has a first opening (not shown), the second end 202 has a second opening (not shown), the middle of the heat exchange channel 20 is provided with a first through hole (not shown) and a second through hole (not shown) at a position corresponding to the center of the LED light bar 902, the first low-temperature liquid pipeline 40 is communicated with the heat exchange channel 20 through the first through hole, and the first high-temperature liquid pipeline 50 is communicated with the heat exchange channel 20 through the first opening. Preferably, the liquid-cooled heat dissipation module 1 of the present invention further includes a second liquid pump 60, a second low-temperature liquid pipeline 70 and a second high-temperature liquid pipeline 80 (in this embodiment, both the second low-temperature liquid pipeline 70 and the second high-temperature liquid pipeline 80 are made of copper, i.e. both the second low-temperature liquid pipeline 70 and the second high-temperature liquid pipeline 80 are copper pipes), the second liquid pump 60 has a second liquid inlet (not shown) and a second liquid outlet (not shown), the second liquid inlet of the second liquid pump 60 is in communication with the cooling liquid in the liquid storage portion 10, and the second liquid outlet of the second liquid pump 60 is in communication with one end of the second low-temperature liquid pipeline 70 so that a portion of the cooling liquid in the liquid storage portion 10 can be pumped into the second low-temperature liquid pipeline 70 when the second liquid pump 60 is operated, and meanwhile, the other end of the second low-temperature liquid pipeline 70 is in communication with the heat exchange channel 20 through the second through-hole, such that the cooling liquid in the second low-temperature liquid pipeline 70 can flow into the heat exchange channel 20 to exchange heat with the heat source; furthermore, one end of the second high temperature liquid pipeline 80 is communicated with the heat exchange channel 20 through the second opening, and the other end of the second high temperature liquid pipeline 80 is communicated with the liquid storage portion 10, so that a part of cooling liquid in the heat exchange channel 20 flows back to the liquid storage portion 10 through the second high temperature liquid pipeline 80 after heat exchange. In this way, the liquid storage portion 10, the first liquid pump 30, the heat exchange channel 20, the first low-temperature liquid pipeline 40 and the first high-temperature liquid pipeline 50 together form a first circulating heat dissipation pipeline, and the liquid storage portion 10, the second liquid pump 60, the heat exchange channel 20, the second low-temperature liquid pipeline 70 and the second high-temperature liquid pipeline 80 together form a second circulating heat dissipation pipeline, in the first circulating heat dissipation pipeline and the second circulating heat dissipation pipeline, the low-temperature cooling liquid directly reaches the hottest position in the center of the LED light bar 902 through the first low-temperature liquid pipeline 40 (the first low-temperature liquid pipeline 40 is communicated with the first through hole in the middle of the heat exchange channel 20) and the second low-temperature liquid pipeline 70 (the second low-temperature liquid pipeline 70 is communicated with the second through hole in the middle of the heat exchange channel 20), so that the low-temperature cooling liquid can quickly reduce the temperature of the hottest position in the center of the LED light bar 902, and the heat dissipation effect is better.
In addition, in the present embodiment, a partition plate may be disposed or not disposed between the first through hole and the second through hole of the heat exchange channel 20 according to actual requirements, if the partition plate is disposed, the heat exchange channel 20 is separated into two parts that are sealed independently from each other by the partition plate, so that the cooling liquid entering from the first low-temperature liquid pipeline 40 can only flow to the first end 201, the cooling liquid entering into the second low-temperature liquid pipeline 70 can only flow to the second end 202, that is, by controlling the output volumes of the first liquid pump 30 and the second liquid pump 60 respectively, the heat dissipation capacities of the first circulation heat dissipation pipeline and the second circulation heat dissipation pipeline can be controlled respectively, for example, if one side of the display is hotter due to some external reasons, the heat dissipation strength of the side can be increased independently. If no partition is provided, the heat exchange channel 20 is a communication channel (i.e. the first end 201 and the second end 202 of the heat exchange channel 20 are communicated), so that the two sets of liquid pumps can be mutually redundant, i.e. if one of the liquid pumps (e.g. the first liquid pump) has a sound fault, the cooling liquid still poured by the other liquid pump (e.g. the second liquid pump) can provide a limited circulation effect on the whole heat exchange channel 20, so that a complete heat dissipation failure on one side of the heat exchange channel 20 does not occur.
In addition, in the present embodiment, the liquid storage portion 10 is in a cuboid shape, the first liquid pump 30 is disposed at a middle position of the liquid storage portion 10 to correspond to the first through hole of the heat exchange channel 20, and the second liquid pump 60 is disposed at a middle position of the liquid storage portion 10 to correspond to the second through hole of the heat exchange channel 20.
In order to facilitate the fixing and combining of the liquid-cooled heat dissipation module 1 and the heat source, the liquid-cooled heat dissipation module 1 of the present invention further has a locking portion (not shown), so that the locking portion can directly install the liquid-cooled heat dissipation module 1 of the present invention behind the backlight module 90 (meanwhile, the heat exchange channel 20 is adjacent to the LED light bar 902 of the backlight module 90). The locking part can also be integrally formed by utilizing the aluminum profile, the heat exchange channel 20, the liquid storage part 10 and other parts. And a heat conducting pad or a heat conducting paste can be lined between the outer wall of the heat exchanging channel 20 and the contact surface at the rear of the backlight module 90 to strengthen the heat conducting capability.
According to another aspect of the present invention, a backlight module 90 is further provided, which includes a back plate 901 and an LED light bar 902, the LED light bar 902 is disposed on the back plate 901, the backlight module 90 further includes the above-mentioned integrated liquid-cooled heat dissipation module 1, and the integrated liquid-cooled heat dissipation module 1 is fixed on the back surface of the back plate 901, and the heat exchange channel 20 is adjacent to the LED light bar 902 (specifically, the heat exchange channel 20 may be parallel to and is adjacent to the length direction of the LED light bar 902), the LED light bar 902 is used as a heat source, and the liquid-cooled heat dissipation module 1 is used for dissipating heat of the LED light bar 902.
According to another aspect of the present invention, the display device 2 further includes a display module 200 and the backlight module 90 described above, the LED light bars 902 of the backlight module 90 are disposed at the side edges of the display module 200, the liquid cooling heat dissipation module 1 described above is disposed at the rear of the backlight module 90, and the heat exchange channels 20 of the liquid cooling heat dissipation module 1 are disposed in parallel with the LED light bars 902 corresponding to the side edges of the display module 200 to dissipate heat of the LED light bars 902.
In summary, the liquid cooling heat dissipation module of the present invention uses a long plate-shaped aluminum extruded part as a main body, and the section of the long plate-shaped main body is provided with a plurality of holes, part of the holes of the section are processed and sealed to be used as heat exchange channels of cooling liquid, part of the holes of the section are processed and sealed to be used as liquid storage parts, a liquid pump and a plurality of communicated liquid pipelines are arranged to enable the cooling liquid to circulate between the heat exchange channels and the liquid storage parts, the heat exchange channels are arranged near the LED lamp bars needing heat dissipation and cooling, heat generated by the LEDs is absorbed through heat conduction, part of the outer wall of the liquid storage parts can be directly extruded into heat dissipation fins by aluminum, and the heat dissipation fins are blown to the heat dissipation fins to cool together with the heat dissipation fans. The whole set of system avoids the main defects of the traditional liquid cooling system, namely, the reliability is lower due to the complex parts, the cost is higher, and the assembly, the maintenance and the replacement are not easy. The invention is formed by trimming a long plate-shaped aluminum extruded part by machining and cutting part aluminum materials, and all parts are fixed on the main structure, thereby achieving the purposes of simplifying the number of parts, improving the reliability and reducing the manufacturing cost, and the integral structure of the whole module ensures simpler assembly, replacement and maintenance procedures. The heat radiation module is especially suitable for being applied to a special-purpose liquid crystal display which takes a high-power LED lamp strip as a backlight light source.
Of course, the present invention is capable of other various embodiments and its several details are capable of modification and variation in light of the present invention by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (7)
1. An integrated liquid-cooled heat sink module, comprising:
a liquid storage part, wherein the liquid storage part stores cooling liquid, and the liquid storage part is provided with radiating fins;
The first liquid pump is provided with a first liquid inlet and a first liquid outlet, and the first liquid inlet of the first liquid pump is communicated with the cooling liquid in the liquid storage part;
the heat exchange channel is a sealed hollow channel;
the two ends of the first low-temperature liquid pipeline are respectively communicated with the first liquid outlet of the first liquid pump and the heat exchange channel; and
The two ends of the first high-temperature liquid pipeline are respectively communicated with the heat exchange channel and the liquid storage part;
when the heat exchange device is used, the heat exchange channel is arranged at a heat source, part of cooling liquid in the liquid storage part flows into the heat exchange channel through the first liquid pump and the first low-temperature liquid pipeline, and part of cooling liquid exchanges heat with the heat source in the heat exchange channel and flows back to the liquid storage part through the first high-temperature liquid pipeline;
The liquid cooling type heat radiation module also comprises a connecting part, wherein the heat exchange channel and the liquid storage part are connected into a whole through the connecting part;
The heat exchange channel, the connecting part, the liquid storage part and the radiating fins are formed by an aluminum extrusion section, and the first low-temperature liquid pipeline and the first high-temperature liquid pipeline are hard pipes.
2. The liquid-cooled heat dissipating module of claim 1, wherein the heat exchanging channel is generally elongated, the heat exchanging channel has a first end portion with a first opening, a first through hole is disposed in the middle of the heat exchanging channel, the first low-temperature liquid pipeline is communicated with the heat exchanging channel through the first through hole, and the first high-temperature liquid pipeline is communicated with the heat exchanging channel through the first opening.
3. The liquid-cooled heat sink module of claim 2, wherein the heat exchange channel further has a second end opposite to the first end, the second end has a second opening, a second through hole is further provided in a middle portion of the heat exchange channel, and the liquid-cooled heat sink module further comprises:
The second liquid pump is provided with a second liquid inlet and a second liquid outlet, and the second liquid inlet of the second liquid pump is communicated with the cooling liquid in the liquid storage part; and
The two ends of the second low-temperature liquid pipeline are respectively communicated with the second liquid outlet of the second liquid pump and the heat exchange channel, and the second low-temperature liquid pipeline is communicated with the heat exchange channel through the second through hole; and
The two ends of the second high-temperature liquid pipeline are respectively communicated with the heat exchange channel and the liquid storage part, and the second high-temperature liquid pipeline is communicated with the heat exchange channel through the second opening;
when the heat exchange device is used, part of the cooling liquid in the liquid storage part flows into the heat exchange channel through the second liquid pump and the second low-temperature liquid pipeline, exchanges heat with a heat source in the heat exchange channel, and flows back to the liquid storage part through the second high-temperature liquid pipeline.
4. The liquid-cooled heat dissipating module of claim 3, wherein the liquid storage portion is generally rectangular, the first liquid pump is disposed at a middle position of the liquid storage portion to correspond to the first through hole of the heat exchange channel, and the second liquid pump is disposed at a middle position of the liquid storage portion to correspond to the second through hole of the heat exchange channel.
5. The liquid-cooled heat sink module as set forth in claim 1, wherein the heat source is in a strip shape, and the heat source is disposed adjacent to the heat exchanging channel and extends in the same direction as the heat exchanging channel.
6. A backlight module comprising a back plate and an LED light bar, wherein the LED light bar is disposed on the back plate, and the backlight module is characterized by further comprising a liquid-cooled heat dissipation module according to any one of claims 1-5, wherein the liquid-cooled heat dissipation module is fixed on the back surface of the back plate, the heat exchange channel is adjacent to the LED light bar, the LED light bar is used as a heat source, and the liquid-cooled heat dissipation module is used for dissipating heat of the LED light bar.
7. The display device is characterized by comprising a display module and the backlight module as claimed in claim 6, wherein the LED lamp strip in the backlight module is arranged at the side edge of the display module, the liquid cooling type heat dissipation module is arranged at the rear of the backlight module, and the heat exchange channel of the liquid cooling type heat dissipation module is arranged at the side edge of the display module corresponding to the LED lamp strip so as to dissipate heat of the LED lamp strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111038598.XA CN115774353B (en) | 2021-09-06 | 2021-09-06 | Integrated liquid-cooled heat dissipation module, backlight module using same and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111038598.XA CN115774353B (en) | 2021-09-06 | 2021-09-06 | Integrated liquid-cooled heat dissipation module, backlight module using same and display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115774353A CN115774353A (en) | 2023-03-10 |
| CN115774353B true CN115774353B (en) | 2024-04-19 |
Family
ID=85388412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111038598.XA Active CN115774353B (en) | 2021-09-06 | 2021-09-06 | Integrated liquid-cooled heat dissipation module, backlight module using same and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115774353B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116466508B (en) * | 2023-04-14 | 2024-09-10 | 厦门天马微电子有限公司 | Display device |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1550869A (en) * | 2003-05-06 | 2004-12-01 | ������������ʽ���� | Light source device, manufacturing method thereof, and projection display device |
| JP2006201987A (en) * | 2005-01-20 | 2006-08-03 | Hitachi Ltd | Liquid cooling system |
| CN1854833A (en) * | 2005-04-29 | 2006-11-01 | 三星电子株式会社 | Cooling arrangement for a liquid crystal display |
| KR20110016292A (en) * | 2009-08-11 | 2011-02-17 | (주)이젤 | LC system cooling system |
| CN102313191A (en) * | 2010-07-09 | 2012-01-11 | 深圳Tcl新技术有限公司 | Side backlight module |
| CN103672814A (en) * | 2013-12-16 | 2014-03-26 | 深圳市华星光电技术有限公司 | Cooling circuit pipe and backlight module adopting cooling circuit pipe |
| CN204287676U (en) * | 2014-12-04 | 2015-04-22 | 深圳Tcl新技术有限公司 | Backlight heat dissipation structure and display device |
| CN204922693U (en) * | 2015-08-31 | 2015-12-30 | 深圳市康冠商用科技有限公司 | LED liquid crystal display module and backlight unit |
| CN105938275A (en) * | 2016-06-30 | 2016-09-14 | 深圳市炬帅光电有限公司 | Liquid crystal display panel and liquid crystal display device |
| CN106647019A (en) * | 2016-10-25 | 2017-05-10 | 深圳市华星光电技术有限公司 | Water cooling system for LED display module and LED display module |
| CN107037631A (en) * | 2016-12-02 | 2017-08-11 | 深圳市华星光电技术有限公司 | Liquid crystal display and its backlight module |
| CN107589592A (en) * | 2017-09-08 | 2018-01-16 | 深圳市华星光电技术有限公司 | Radiator structure and backlight module for backlight module |
| CN108662472A (en) * | 2018-05-29 | 2018-10-16 | 江苏聚泰科技有限公司 | A kind of good side entrance back module of heat dissipation |
| CN108693671A (en) * | 2018-05-30 | 2018-10-23 | 惠州市华星光电技术有限公司 | Backlight module, liquid crystal display |
| CN209028380U (en) * | 2018-12-10 | 2019-06-25 | 深圳市优百特光电有限公司 | A kind of backlight arrangement with heat sinking function |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7710531B2 (en) * | 2005-02-15 | 2010-05-04 | Denso Corporation | Liquid crystal display apparatus |
| TWM534509U (en) * | 2016-08-24 | 2016-12-21 | Man Zai Ind Co Ltd | Liquid-cooling heat dissipation assembly |
-
2021
- 2021-09-06 CN CN202111038598.XA patent/CN115774353B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1550869A (en) * | 2003-05-06 | 2004-12-01 | ������������ʽ���� | Light source device, manufacturing method thereof, and projection display device |
| JP2006201987A (en) * | 2005-01-20 | 2006-08-03 | Hitachi Ltd | Liquid cooling system |
| CN1854833A (en) * | 2005-04-29 | 2006-11-01 | 三星电子株式会社 | Cooling arrangement for a liquid crystal display |
| KR20110016292A (en) * | 2009-08-11 | 2011-02-17 | (주)이젤 | LC system cooling system |
| CN102313191A (en) * | 2010-07-09 | 2012-01-11 | 深圳Tcl新技术有限公司 | Side backlight module |
| CN103672814A (en) * | 2013-12-16 | 2014-03-26 | 深圳市华星光电技术有限公司 | Cooling circuit pipe and backlight module adopting cooling circuit pipe |
| CN204287676U (en) * | 2014-12-04 | 2015-04-22 | 深圳Tcl新技术有限公司 | Backlight heat dissipation structure and display device |
| CN204922693U (en) * | 2015-08-31 | 2015-12-30 | 深圳市康冠商用科技有限公司 | LED liquid crystal display module and backlight unit |
| CN105938275A (en) * | 2016-06-30 | 2016-09-14 | 深圳市炬帅光电有限公司 | Liquid crystal display panel and liquid crystal display device |
| CN106647019A (en) * | 2016-10-25 | 2017-05-10 | 深圳市华星光电技术有限公司 | Water cooling system for LED display module and LED display module |
| CN107037631A (en) * | 2016-12-02 | 2017-08-11 | 深圳市华星光电技术有限公司 | Liquid crystal display and its backlight module |
| CN107589592A (en) * | 2017-09-08 | 2018-01-16 | 深圳市华星光电技术有限公司 | Radiator structure and backlight module for backlight module |
| CN108662472A (en) * | 2018-05-29 | 2018-10-16 | 江苏聚泰科技有限公司 | A kind of good side entrance back module of heat dissipation |
| CN108693671A (en) * | 2018-05-30 | 2018-10-23 | 惠州市华星光电技术有限公司 | Backlight module, liquid crystal display |
| CN209028380U (en) * | 2018-12-10 | 2019-06-25 | 深圳市优百特光电有限公司 | A kind of backlight arrangement with heat sinking function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115774353A (en) | 2023-03-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105716046A (en) | Omnidirectional convection active radiator and stage lamp applying radiator | |
| EP3618595B1 (en) | Heat dissipation system for liquid crystal television, and liquid crystal television | |
| CN201166759Y (en) | Flat display device with radiating module | |
| CN107065258B (en) | Heat dissipation module and liquid crystal display | |
| CN206819010U (en) | A kind of backlight module, display device and UAS | |
| CN101881399A (en) | Backlight module | |
| CN210838441U (en) | Heat dissipation device applied to semiconductor laser | |
| KR200499875Y1 (en) | Fiber laser device with compression cooling | |
| CN101464618B (en) | Projection apparatus with cooling structure | |
| CN204287676U (en) | Backlight heat dissipation structure and display device | |
| CN217787721U (en) | Water-cooled heat abstractor | |
| CN115774353A (en) | Integrated liquid-cooled heat dissipation module, backlight module using same and display device | |
| CN110566847A (en) | LED stage lighting matrix system with centralized liquid cooling heat dissipation | |
| CN210377352U (en) | A marine computer monitor with multi-directional heat dissipation | |
| CN211349986U (en) | High-efficient radiating booth apart from LED display screen | |
| US11428976B2 (en) | Display device and electronic device | |
| CN210401985U (en) | Partition liquid cooling heat dissipation system and projector | |
| US12174518B2 (en) | Radiator and photographic light | |
| CN218601668U (en) | LCD projector sealing optical machine of indirect liquid cooling | |
| CN215808014U (en) | Parallel external radiating lamp | |
| CN212433539U (en) | Liquid crystal display backplate that radiating effect is good | |
| CN210687886U (en) | LED stage lighting matrix system with centralized liquid cooling heat dissipation | |
| CN211040898U (en) | Radiator for UV L ED lamp | |
| CN208506476U (en) | A projector cooling device | |
| CN215951143U (en) | An LED light-emitting diode with good heat dissipation performance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |