CN112509458A - Display device - Google Patents
Display device Download PDFInfo
- Publication number
- CN112509458A CN112509458A CN201910872189.6A CN201910872189A CN112509458A CN 112509458 A CN112509458 A CN 112509458A CN 201910872189 A CN201910872189 A CN 201910872189A CN 112509458 A CN112509458 A CN 112509458A
- Authority
- CN
- China
- Prior art keywords
- light source
- display device
- heat dissipation
- heat
- housing
- 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.)
- Pending
Links
- 230000017525 heat dissipation Effects 0.000 claims description 82
- 230000007423 decrease Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 description 11
- 230000005855 radiation Effects 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012788 optical film Substances 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20954—Modifications to facilitate cooling, ventilating, or heating for display panels
- H05K7/20963—Heat transfer by conduction from internal heat source to heat radiating structure
Abstract
The invention discloses a display device, and relates to the technical field of display. The embodiment of the invention provides a display device, which sequentially comprises a panel, a light guide plate and a light source positioned on one side of the light guide plate along the thickness direction of the display device. In the embodiment of the invention, the radiator is positioned at one side of the light source far away from the light guide plate and is not positioned in a relatively closed environment between the light guide plate and the back plate, so that the radiator can be positioned in a natural convection environment, and the convection heat exchange efficiency is improved.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display device.
Background
The display device comprises a panel and a backlight module, wherein the backlight module is used for providing a light source. According to the different light incident modes of the light source in the backlight module, the display device is divided into a direct type display device and a side type display device. The direct type display device and the side type display device have the heat accumulation caused by the heat radiation of the light source, and a heat dissipation part is required to be arranged in the display device to dissipate heat so as to ensure the normal operation and use of the display device.
The existing side-entering display device usually adopts an L-shaped aluminum material for heat dissipation, the L-shaped aluminum material comprises a light source installation part and a heat dissipation part which is perpendicular to the light source installation part, the light source is installed on the light source installation part, the heat dissipation part is installed on a back plate in the display device, and the other side of the back plate is provided with a rear shell. When the display device works, the heat of the light source is transferred to the L-shaped aluminum material through heat conduction, then transferred to the upper surface of the back plate, and finally dissipated through the rear shell.
In the above heat dissipation structure, the light source and the heat dissipation part are in a closed environment, so that the heat dissipation efficiency is low.
Disclosure of Invention
The invention provides a display device, which mainly solves the problem of low heat dissipation efficiency in a lateral type display device.
The invention provides a display device, which sequentially comprises a panel, a light guide plate and a light source positioned on one side of the light guide plate along the thickness direction of the display device.
Compared with the prior art, the radiator is positioned in a closed environment, the radiator in the embodiment of the invention is positioned on one side of the light source far away from the light guide plate and is not positioned in the relatively closed environment between the light guide plate and the back plate, so that the radiator can be positioned in a natural convection environment, the convection heat exchange efficiency is improved, and the radiating efficiency of the display device in the embodiment of the invention is higher.
In some embodiments, the heat sink is entirely located on a side of the light source away from the light guide plate.
In some embodiments, the heat sink includes a light source mounting portion and a heat dissipating portion connected to the light source mounting portion and perpendicular to the light source mounting portion, the light source is mounted to the light source mounting portion, and the heat dissipating portion is located on a side away from the light source.
In some embodiments, the heat sink includes a heat sink body and a fin, one end of the fin is connected to the heat sink body, and a free end of the fin extends away from the heat sink body.
In certain embodiments, the number of fins is one or more.
In some embodiments, the free ends of at least two of the fins extend to different heights in a direction away from the heat sink body.
In some embodiments, the free ends of the fins extend in a direction away from the heat dissipation portion body to form heights which decrease in sequence from a side close to the light source mounting portion to a side of the heat dissipation portion body away from the light source mounting portion.
In some embodiments, the display device further comprises a front case covering the end of the panel and the heat sink, and a hollow cavity is formed between the front case and the heat sink.
In some embodiments, the front housing is provided with heat dissipation holes, and the heat dissipation holes are disposed at corresponding positions of the cavity.
In some embodiments, the front housing includes a first housing and a second housing, the first housing is connected to the second housing, and the heat dissipation hole is disposed on the first housing and/or the second housing.
In the embodiment of the invention, heat generated by radiation of the light source can be contacted with convection air to realize heat exchange after being conducted to the radiator, compared with the heat dissipation mode in the prior art, the heat dissipation path is greatly reduced, the thermal resistance is reduced, and the heat conduction efficiency is greatly improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a lateral display device in the prior art;
FIG. 2 is a cross-sectional view of a lateral entry display device according to an embodiment of the present invention;
FIG. 3 is a perspective cross-sectional view of a lateral entry display device according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a heat sink 800;
fig. 5 is a schematic structural view of the front case 700.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning contact-connected, detachable-connected, or integrally-connected; the specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The heat radiation of the light source in the display device causes heat accumulation in the display device, and in the prior art, the heat dissipation is performed by arranging a heat dissipation part in the display device so as to ensure the normal use of the display device.
Fig. 1 is a schematic cross-sectional view of a lateral type display device in the prior art. As shown in fig. 1, the side-entry display device includes a panel 01, a light guide plate 02, a heat sink 03, a back plate 04, and a rear case 05 in this order, and a light source 06 and a front case 07 at the side of the light guide plate 02, along the thickness direction of the side-entry display device.
The heat sink 03 is L-shaped as a whole, and includes a light source mounting portion 031 and a heat dissipating portion 032 connected to the light source mounting portion 031 and perpendicular to the light source mounting portion 031. The light source 06 is mounted on the light source mounting portion 031, the light source 06 is mounted on the light source mounting portion 031 through the heat-conductive double-sided tape, and the heat dissipation portion 032 is located between the back plate 04 and the light guide plate 02. The front case 07 covers the end of the panel 01 and the side of the light source installation part 031.
When the lateral-entering display device works, the heat of the light source 06 is firstly transferred to the heat-conducting double-sided adhesive tape, then is thermally conducted to the light source mounting part 031, and then is thermally conducted to the heat-radiating part 032, so that the heat generated by the light source 06 is transferred to the backboard 04 due to the contact of the heat-radiating part 032 and the backboard 04, and finally the heat on the backboard is taken away through the rear shell, thereby finally achieving dynamic balance and enabling the temperature of the light source to tend to be stable.
In the above-mentioned display device, the heat dissipation structure is not in a natural convection environment because the light source 06 and the heat sink 03 are in a closed environment, and the heat dissipation path of the light source 06 includes at least four times of heat conduction, so that the heat resistance is large and the heat dissipation efficiency is low.
Based on the existing technical problems, the invention provides a lateral type display device to improve the heat dissipation efficiency.
Fig. 2 to 3 are views of a side entry display device according to an embodiment of the present invention, fig. 4 is a schematic structural view of a heat sink 800, and fig. 5 is a schematic structural view of a front case 700. Referring to fig. 2-3, along the thickness direction of the display device, the lateral type display device in the embodiment of the invention sequentially includes a panel 100, an optical film 200, a rubber frame 300, a light guide plate 400, a back plate 500, a light source 600 and a heat sink 800 located at one side of the light guide plate 400, wherein the light source 600 and the heat sink 800 are located at the same side of the light guide plate 400, and the heat sink 800 is located at one side of the light source 600 away from the light guide plate 400. The frame 300 has a plurality of supporting portions for supporting and fixing the optical film 200 and the panel 100.
In the embodiment of the present invention, the heat sink 800 is entirely located at a side of the light source 600 away from the light guide plate 400.
Compared with the prior art, the heat sink 03 is in a closed environment, and the heat sink 800 in the embodiment of the present invention is located on the side of the light source 600 away from the light guide plate 400 and is no longer located in a relatively closed environment between the light guide plate and the back plate, so that the heat sink 800 can be placed in a natural convection environment, and the convection heat exchange efficiency is improved, so that the heat dissipation efficiency of the display device in the embodiment of the present invention is high.
As shown in fig. 4, the heat sink 800 is L-shaped, and includes a light source mounting portion 801 and a heat dissipating portion 802 connected to the light source mounting portion 801 and perpendicular to the light source mounting portion 801, and one side of the heat dissipating portion 802 is mounted on the back plate 500.
As shown in fig. 2 to 3, the light source 600 is mounted on the light source mounting portion 801, and the heat dissipation portion 802 is located on a side away from the light source 600, that is, the light source 600 is mounted on a side of the light source mounting portion 801 away from the heat dissipation portion 802.
In some embodiments, the heat dissipation portion 802 includes fins 8022 in addition to the heat dissipation portion body 8021, and the heat dissipation portion 802 further includes heat dissipation fins, so that the heat dissipation area is increased by the heat dissipation fins, and the heat dissipation efficiency is further improved. In the embodiment of the present invention, the fins 8022 are located on one side of the heat dissipation portion 802 away from the backplate 500, one end of the fins 8022 is connected to the heat dissipation portion body 8021, and the free end of the fins 8022 extends toward the direction away from the heat dissipation portion body 8021 to form a long strip shape, which is substantially parallel to the direction of the light source mounting portion 801.
In some embodiments, the number of the fins 8022 may be one or more, and the larger the number of the fins 8022, the larger the heat dissipation area, and the better the heat dissipation effect.
In some embodiments, the heat dissipation portion 802 includes a plurality of fins 8022 parallel to each other, and the fins 8022 are spaced apart from each other to facilitate air flow and to accelerate heat dissipation. The fins 8022 are arranged in order from the side close to the light source mounting portion 801 to the end of the heat dissipating portion body 8021 remote from the light source mounting portion 802. In the embodiment of the present invention, the fin 8022 is provided on an end of the heat dissipation portion body 8021 away from the light source mounting portion 802.
In some embodiments, the free ends of the at least two fins 8022 extend to a direction away from the heat dissipating body 8021 to form different heights, and the arrangement of the different heights facilitates smooth flow of air entering the space, so as to take away heat more quickly.
In some embodiments, the free ends of the plurality of fins 8022 extend in a direction away from the heat sink body 8021 to form heights that decrease in sequence from a side near the light source mounting portion 801 to a side of the heat sink body 8021 away from the light source mounting portion 802, that is, the height of the fin 8022 near the light source mounting portion 801 is the highest, and the height of the fin 8022 farthest from the light source mounting portion 801 is the lowest. With such an arrangement, the heat accumulated near the light source installation part 801 is large, the heat dissipation requirement is large, the higher the height of the corresponding fin 8022 is, the larger the heat dissipation area is, the easier the heat dissipation is, and the efficient heat dissipation can be realized. In addition, the heights are sequentially reduced, so that the air with lower temperature in the space can move from the far end of the light source installation part 801 to the near end of the light source installation part 801 under the condition of smaller resistance, and meanwhile, the hot air at the near end of the light source installation part 801 can also move to the far end of the light source installation part 801 relatively quickly, so that heat is taken away, and efficient and effective heat dissipation is realized.
In some embodiments, the height formed by extending the free end of the fin 8022 in the direction away from the heat dissipation portion body 8021 is less than the height formed by extending the light source installation portion 801 in the direction away from the heat dissipation portion body 8021, which is mainly to ensure that a relatively large air flow space can be formed and air can flow smoothly.
In some embodiments, the lateral type display apparatus further includes a front case 700, and the front case 700 covers the end portion of the panel 100 and the heat sink 800, so that internal components of the display apparatus, such as the heat sink, the rubber frame, and the like, are not exposed, and the display apparatus has a good appearance.
As shown in fig. 5, the front case 700 is substantially L-shaped, and includes a first case 701 and a second case 702, and the first case 701 and the second case 702 are connected.
Returning to fig. 2 to 3, the first housing 701 covers the end portion of the panel 100 and the heat sink 800, the second housing 702 covers the side edge in the thickness direction of the display device, and the second housing 702 and the rear plate 500 together house components such as the heat sink, the light guide plate, and the like of the display device in the internal space. A hollow cavity S is formed among the heat sink 800, the first shell 701, the second shell 702, the back plate 500 and the rubber frame 300, and the existence of the cavity enables heat exchange between the heat sink 800 and air in the cavity, so that heat dissipation of the heat sink is realized, and the purpose of heat dissipation of the light source is further achieved. The first and second housings 701 and 702 have a length direction with a longer length and a width direction with a shorter length, respectively.
In some embodiments, the front case 700 is provided with heat dissipation holes 703, and the presence of the heat dissipation holes 703 enables external cold air to enter the inside of the display device, and also enables hot air inside the display device to flow to the outside through the heat dissipation holes 703, thereby accelerating air flow and heat exchange between the inside of the display device and the outside.
In some embodiments, the heat dissipation holes 703 are disposed at positions corresponding to the cavity S, and through the heat dissipation holes 703, good air flow is formed between the cavity S and the outside, so as to take away heat accumulated on the heat sink 800.
In some embodiments, the heat dissipation holes 703 may be optionally disposed on the first housing 701 and/or the second housing, and the disposition position is not limited thereto. The number of the heat dissipation holes 703 is set, in order to ensure uniform heat dissipation of the heat sink 800, the heat dissipation holes 703 are sequentially set in the length of the first housing 701 or the second housing 702, and the number of the heat dissipation holes set in the width direction of the first housing 701 and the second housing 702 may be one or more than two, which is not limited herein.
In the embodiment of the present invention, the heat dissipation holes 703 are respectively disposed on the first housing 701 and the second housing 702. Referring to fig. 5, a plurality of heat dissipation holes 703 are sequentially formed along the length direction of the first housing 701 and the second housing 702, the heat dissipation holes 703 are uniformly formed along the length direction, and one heat dissipation hole 703 is formed along the width direction of the first housing 701 and the second housing 702.
The following describes a heat dissipation path in a display device according to an embodiment of the present invention.
The heat generated by the light source 600 is firstly conducted to the light source installation part 801, then is conducted to the heat dissipation part 802, the heat dissipation part body 8021 and the fins 8022 are heated together, the external air enters the cavity S through the heat dissipation holes 703 on the front shell 700, the heat dissipation part body 8021 and the fins 8022 exchange heat with the air in the cavity S, the heat on the heat dissipation part 802 is conducted to the air, the air becomes hot and flows, the hot air runs out of the outside through the heat dissipation holes 703, the operation is repeated, and the heat dissipation of the light source is realized.
In the embodiment of the present invention, the heat generated by the radiation of the light source 600 is conducted to the heat sink 800 and then contacts with the convection air to realize heat exchange, compared with the heat dissipation method in the prior art, the heat dissipation path is greatly reduced, the thermal resistance is reduced, and the heat conduction efficiency is greatly improved. Experimental tests show that the heat dissipation efficiency of the scheme in the embodiment of the invention is 2-6.5 times higher than that of the existing scheme.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a display device, along display device's thickness direction, display device includes panel and light guide plate in proper order, display device is still including the light source that is located light guide plate one side, its characterized in that, display device still includes the radiator, the radiator with the light source is located same one side of light guide plate, the radiator is located the light source is kept away from one side of light guide plate.
2. The display device according to claim 1, wherein the heat sink is entirely located on a side of the light source away from the light guide plate.
3. The display device according to claim 1, wherein the heat sink includes a light source mounting portion and a heat dissipating portion connected to the light source mounting portion and perpendicular to the light source mounting portion, the light source being mounted to the light source mounting portion, the heat dissipating portion being located on a side away from the light source.
4. The display device according to claim 3, wherein the heat dissipation portion includes a heat dissipation portion body and a fin, one end of the fin is connected to the heat dissipation portion body, and a free end of the fin extends in a direction away from the heat dissipation portion body.
5. The display device according to claim 4, wherein the number of the fins is one or more.
6. The display device according to claim 4, wherein the free ends of at least two of the fins extend to different heights in a direction away from the heat sink body.
7. The display device according to claim 6, wherein a height at which the free end of the fin extends in a direction away from the heat dissipation portion body decreases in order from a side close to the light source mounting portion to an end of the heat dissipation portion body away from the light source mounting portion.
8. The display device of claim 1, further comprising a front cover covering the end of the panel and the heat sink, wherein the front cover and the heat sink form a hollow cavity therebetween.
9. The display device according to claim 8, wherein the front housing has heat dissipation holes disposed at positions corresponding to the cavities.
10. The display device according to claim 9, wherein the front housing comprises a first housing and a second housing, the first housing and the second housing are connected, and the heat dissipation hole is disposed on the first housing and/or the second housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910872189.6A CN112509458A (en) | 2019-09-16 | 2019-09-16 | Display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910872189.6A CN112509458A (en) | 2019-09-16 | 2019-09-16 | Display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112509458A true CN112509458A (en) | 2021-03-16 |
Family
ID=74923856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910872189.6A Pending CN112509458A (en) | 2019-09-16 | 2019-09-16 | Display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112509458A (en) |
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| TW201100926A (en) * | 2009-06-29 | 2011-01-01 | Au Optronics Corp | Backlight module and display module |
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| CN202082747U (en) * | 2011-05-26 | 2011-12-21 | 深圳市华星光电技术有限公司 | Display device and backlight module |
| WO2012099001A1 (en) * | 2011-01-20 | 2012-07-26 | シャープ株式会社 | Lighting apparatus and display apparatus |
| CN102628566A (en) * | 2012-03-27 | 2012-08-08 | 深圳市华星光电技术有限公司 | Backlight module, liquid crystal display device and light source of backlight module |
| TW201300898A (en) * | 2011-06-29 | 2013-01-01 | Top Victory Invest Ltd | Edge-lit backlight module and liquid crystal display |
| JP2014077837A (en) * | 2012-10-09 | 2014-05-01 | Sharp Corp | Liquid crystal display device |
| JP2015011045A (en) * | 2013-06-26 | 2015-01-19 | シャープ株式会社 | Cooling structure of display device |
| CN208506447U (en) * | 2018-08-08 | 2019-02-15 | Tcl海外电子（惠州）有限公司 | Backlight module and liquid crystal display device |
-
2019
- 2019-09-16 CN CN201910872189.6A patent/CN112509458A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004126151A (en) * | 2002-10-01 | 2004-04-22 | Nec Corp | Display device |
| JP2008304630A (en) * | 2007-06-06 | 2008-12-18 | Hitachi Ltd | Liquid crystal display device |
| TW201100926A (en) * | 2009-06-29 | 2011-01-01 | Au Optronics Corp | Backlight module and display module |
| WO2012099001A1 (en) * | 2011-01-20 | 2012-07-26 | シャープ株式会社 | Lighting apparatus and display apparatus |
| CN202082747U (en) * | 2011-05-26 | 2011-12-21 | 深圳市华星光电技术有限公司 | Display device and backlight module |
| TW201300898A (en) * | 2011-06-29 | 2013-01-01 | Top Victory Invest Ltd | Edge-lit backlight module and liquid crystal display |
| CN102230588A (en) * | 2011-07-08 | 2011-11-02 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display |
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| JP2015011045A (en) * | 2013-06-26 | 2015-01-19 | シャープ株式会社 | Cooling structure of display device |
| CN208506447U (en) * | 2018-08-08 | 2019-02-15 | Tcl海外电子（惠州）有限公司 | Backlight module and liquid crystal display device |
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