A kind of backlight module, display device and UAV systemTechnical fieldDisplay backlight mould technical group field of the embodiment of the present invention, more particularly to a kind of backlight module, display device and UAV system.
Background techniqueWith the development of display technology, plane formula display (the Flat Panel Display that cooperation photoelectric technology and semiconductor processing technology are developed, FPD), such as liquid crystal display (Liquid Crystal Display, LCD), organic point excites optical display unit (Organic Electro-Luminescent, OLED) and plasma display (Plasma Display Panel, PDP) has been increasingly becoming the product of display mainstream.For liquid crystal display, its display panel will not be from main light emission, it needs to provide uniform area source using backlight module for display panel, so that display reaches display effect, wherein, it is provided with light source in backlight module, the diverging light of light source is converted by the planar light that display panel needs by light guide plate.
As display quality requirement of the user to display is higher and higher, and picture is shown in order to still be able to clearly see display under outdoor solar light, need to improve the brightness of the planar light of the backlight module output of display, accordingly, need to increase the quantity of light source of backlight module, and the heat that the increase of quantity of light source will lead to backlight module increases, and overheats backlight module.On the one hand on the other hand the backlight module of overheat can influence the use of user since temperature is excessively high because of the damage of backlight unit part.It radiates currently, generalling use graphite heat radiation fin to backlight module, but graphite heat radiation fin can only will play the role of soaking, can not radiate well to backlight module.
Summary of the invention
The embodiment of the present invention provides a kind of backlight module, display device and UAV system, the excessively high technical problem of the temperature to solve backlight module.
In order to solve the above technical problems, a technical solution used in the embodiment of the present invention is: providing a kind of backlight module, including at least one light source, the part incidence surface side of the backlight module is arranged in；
Circuit board is electrically connected at least one described light source, for fixing the light source and providing power supply for the light source；
At least one first heat pipe, it is arranged in the circuit board side, setting direction along the light source extends, the evaporation ends of first heat pipe are arranged corresponding to the light source, condensation end extends to another part incidence surface side of the not set light source of the backlight module, and the condensation end of the heat transmission of the light source to first heat pipe is radiated.
Wherein, the backlight module further includes the heat-conductive assembly being arranged between the circuit board and first heat pipe；
The heat-conductive assembly includes heat-conducting glue and metal plate；
The heat-conducting glue is used to the circuit board being pasted onto the metal plate；
The metal plate connects first heat pipe, radiates for conducting the heat of the light source to first heat pipe.
Wherein, the metal plate is reinforcement of weld plate.
Wherein, the backlight module is side entrance back module；
Two first direction sides of the backlight module are arranged at least one described light source and a second direction side, the metal plate are set to the bottom surface side of the backlight module；
The quantity of first heat pipe is two, and described two first heat pipes are the bending mechanism for including first direction part and second direction part composition；The first direction part is arranged on the corresponding metal plate in first direction side of the backlight module, the second direction part is arranged on the corresponding metal plate in second direction side of the backlight module, and the condensation end of described two first heat pipes extends to another second direction side of the not set light source of the backlight module.
In order to solve the above technical problems, another technical solution used in the embodiment of the present invention is:A kind of display device is provided, which includes:
Framework, display panel, driver circuit plate, radiating subassembly and backlight module；
The display panel, driver circuit plate, radiating subassembly and backlight module are arranged in the framework, and the incident side of the display panel is arranged in the backlight module, and the driver circuit plate is electrically connected with the display panel and the backlight module；Wherein,
The backlight module is the backlight module provided in above scheme, and the condensation end that the radiating subassembly corresponds to first heat pipe is arranged, for radiating to the backlight module；And/or
The display device includes the second heat pipe for being set to driver circuit plate side, and the condensation end of second heat pipe corresponds to the radiating subassembly, for the heat transmission of the driver circuit plate to the radiating subassembly to radiate.
Wherein, the radiating subassembly includes the first cooling fin；
The evaporation ends of second heat pipe are arranged on the driver circuit plate, and condensation end extends to first cooling fin.
Wherein, the display device further includes the second cooling fin；
The condensation end of first heat pipe extends to second cooling fin.
Wherein, the display device further includes fan, and the fan is arranged between first cooling fin and second cooling fin.
Wherein, the fan is turbofan；First cooling fin and second cooling fin are separately positioned on air inlet and the air outlet of the fan.
Wherein, first cooling fin and the second cooling fin sealed set, move air along the extending direction of first cooling fin and second cooling fin.
To solve above-mentioned technical problem, another technical solution used in the embodiment of the present invention is: providing a kind of UAV system, the UAV system includes unmanned plane and unmanned aerial vehicle (UAV) control terminal, which is characterized in that the unmanned aerial vehicle (UAV) control terminal includes the display device provided in above-mentioned technical proposal.
The beneficial effect of the embodiment of the present invention is: in the backlight module provided by the embodiment of the present invention, display device and UAV system, at least one first heat pipe is arranged in the circuit board side backlight module, and the first heat pipe is enabled to extend along the setting direction of light source, and the steaming of the first heat pipeOriginator corresponds to the light source and is arranged, and condensation end extends to another part incidence surface side of the not set light source of the backlight module.The heat transmission of the light source of backlight module to backlight module is not provided with to the part of light source using the first heat pipe, and then is radiated by the condensation end of the first heat pipe, the radiating efficiency of backlight module is effectively raised.
Detailed description of the inventionFig. 1 is the positive structure schematic of backlight module first embodiment of the present invention；
Fig. 2 is the structure schematic diagram of backlight module shown in Fig. 1；
Fig. 3 is the cross-sectional view of the A-A ˊ along backlight module shown in Fig. 2；
Fig. 4 is the enlarged structure schematic diagram of part B in Fig. 3；
Fig. 5 is the structure schematic diagram of one embodiment of the display device of that present invention；
Fig. 6 is the structural schematic diagram of radiating subassembly and driver circuit plate in display device shown in fig. 5；
Fig. 7 is the structure schematic diagram that one embodiment of the display device of that present invention includes framework.
Specific embodimentFollowing will be combined with the drawings in the embodiments of the present invention, and technical scheme in the embodiment of the invention is clearly and completely described, it is clear that the described embodiments are merely a part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, shall fall within the protection scope of the present invention.
Fig. 1 and Fig. 2 are please referred to, Fig. 1 is the positive structure schematic of backlight module first embodiment of the present invention, and Fig. 2 is the structure schematic diagram of backlight module shown in Fig. 1.The present embodiment is by taking backlight module 10 is side entrance back module as an example, in other embodiments, backlight module 10 or down straight aphototropism mode set.As shown in Figure 1, incidence surface is at least one side of light guide plate in backlight module 10 for side entrance back module, enable backlight module 10 verticalTwo sides on direction are two first direction sides 101, and two sides in transverse direction are two second direction sides 102.In the present embodiment, the two first direction sides 101 and a second direction side 102 of light guide plate are arranged in the multiple light sources 11 of backlight module.Circuit board (being not drawn into figure) is electrically connected at least one light source 11, provides power supply for fixed light source 11 and for light source 11.In the present embodiment, light source 11 is LED light source, and circuit board is flexible circuit board, it is to be understood that in other embodiments, light source 11 can also be that other kinds of point light source, circuit board may be pcb board.
As shown in Fig. 2, being provided with the first heat pipe 12 at the back side of backlight module 10, the setting of the first heat pipe 12 is used for fixed light source 11 in circuit board side, the other side of circuit board.In the present embodiment, the quantity of the first heat pipe 12 is two, and two the first heat pipes 12 extend along the setting direction of light source 11, and corresponding with the setting position of light source 11.That is two the first heat pipes 12 are the bending mechanism for including first direction part and second direction part composition, wherein first direction part corresponds to the first direction side 101 of backlight module 10, and second direction part corresponds to the second direction side 102 of backlight module 10.The evaporation ends 121 of two the first heat pipes 12 are arranged at the second direction side 102 that backlight module 10 has light source 11, and condensation end 122 extends to another second direction side 102 of the not set light source 11 of backlight module 10.The heat for the light source 11 that evaporation ends 121 and tube wall the difference absorbing circuit plate conduction of two the first heat pipes 12 come, and conduct the heat being absorbed into the condensation end 122 of two the first heat pipes 12 respectively, the condensation end 122 of the first heat pipe 12 then discharges the heat being absorbed into outward.The conduction orientation of heat is as shown in the straight line with the arrow in Fig. 2 in two the first heat pipes 12.
It can be understood that, with no restrictions to the specific setting position of the quantity of the first heat pipe and light source, in other embodiments of the invention, the quantity of the first heat pipe can be set the present invention according to actual needs, can only have first heat pipe, it is possible to have three or more first heat pipes；Any one or both direction side in two first direction sides and two second direction sides also can be set in light source, in addition, light source can also be arranged in part first direction side orPart second direction side.Wherein, needing to meet the first heat pipe between the first heat pipe and light source is extended along the setting of light source, so that the first heat pipe can effectively absorb the heat that light source is transferred out by circuit board by evaporation ends and tube wall.
Three sides of backlight module are arranged in the light source of the present embodiment, it can be improved the illumination brightness of backlight module, absorb the heat of light source from the circuit board of fixed light source using the tube wall of the evaporation ends of the first heat pipe and the first heat pipe simultaneously, and the heat being absorbed into is conducted to the condensation end of the first heat pipe, pass through the heat spreading function of the condensation end of the first heat pipe, the heat of the light source of backlight module is distributed, and then realize while enhancing the illumination brightness of backlight module, improve the radiating efficiency of backlight module.
Further, the present invention also provides backlight module second embodiment, the backlight module of the present embodiment further includes the heat-conductive assembly being arranged between circuit board and the first heat pipe on the basis of Fig. 1 and backlight module first embodiment shown in Fig. 2.Since heat-conductive assembly is arranged between circuit board and the first heat pipe, the backlight module of the present embodiment positive structure schematic and structure schematic diagram respectively and the positive structure schematic of Fig. 1 and backlight module first embodiment shown in Fig. 2 is identical as structure schematic diagram.It is the cross-sectional view of the present embodiment A-A ˊ along Fig. 2 refering to Fig. 3 and Fig. 4, Fig. 3, Fig. 4 is the enlarged structure schematic diagram of part B in Fig. 3.As shown in Figure 3 and Figure 4, the heat-conductive assembly of the backlight module 20 of the present embodiment includes heat-conducting glue 14 and metal plate 15.Wherein, heat-conducting glue 14 is used to circuit board 13 being pasted onto metal plate 15；Metal plate 15 connects the first heat pipe 12, radiates for conducting the heat of light source 11 to the first heat pipe 12.
At this point, the first direction part of the first heat pipe 12 is arranged on the corresponding metal plate 15 in first direction side of backlight module, the second direction part of the first heat pipe 12 is arranged on the corresponding metal plate 15 in second direction side of backlight module.
In the present embodiment, rapidly the heat of light source can be conducted to heat pipe by heat-conducting glue in heat-conductive assembly and metal plate, further increase the radiating efficiency of backlight module.
In the present embodiment, metal plate is reinforcement of weld plate, can play the role of supporting and fixing backlight module while conducting heat.Reinforcement of weld plate can have excellent conductive performance, and the metal plate with certain degree of hardness for reinforcement aluminium sheet or reinforcement copper sheet etc..
Further, the present invention also provides a kind of display devices.It is the structure schematic diagram of one embodiment of the display device of that present invention refering to Fig. 5, Fig. 5.As shown in figure 5, the display device includes display panel 20, driver circuit plate (being not drawn into figure), radiating subassembly 40 and backlight module 50；Display panel 20, driver circuit plate, radiating subassembly 40 and backlight module 50 are arranged in framework, and the incident side of display panel 20 is arranged in backlight module 50, and backlight module 50 is that display panel 20 provides directional light；Driver circuit plate is electrically connected with display panel 20 and backlight module 50, provides driving signal for display panel 20 and backlight module 50.
In the present embodiment, backlight module can be the backlight module in any one embodiment shown in Fig. 1 to Fig. 4.In other embodiments, backlight module may be other types backlight module in the prior art.In addition, the display device of the present embodiment further includes the second heat pipe for being set to driver circuit plate side, the condensation end of the second heat pipe corresponds to radiating subassembly, for the heat transmission of driver circuit plate to radiating subassembly to radiate.When the backlight module in the display device of the present embodiment is the backlight module in any one embodiment shown in Fig. 1 to Fig. 4, and when being provided with the second heat pipe, it can radiate simultaneously to backlight module and driver circuit plate, the radiating efficiency of display device can be further increased.
It can be understood that, it, can be without the second heat pipe, i.e., in the other embodiments of display device in the other embodiments of the display device of that present invention, the heat of driver circuit plate is not conducted to radiating subassembly, only the heat of light source is conducted to radiating subassembly by the first heat pipe and is radiated.
As shown in Figure 5 and Figure 6, the radiating subassembly 40 of the present embodiment includes the first cooling fin 41, the second cooling fin 42 and fan 43.Wherein, the evaporation ends of the second heat pipe 31 are arranged on driver circuit plate 30, and condensation end extends to the first cooling fin 41.The condensation end of first heat pipe 12 in two the first heat pipes 12 extends to the second cooling fin 42, and the condensation end of another the first heat pipe 12 extends to the first cooling fin 41.Fan 43 is arranged between the first cooling fin 41 and the second cooling fin 42.The structural schematic diagram of the second heat pipe 31, driver circuit plate 30 and radiating subassembly 40 is as shown in Figure 6 in the present embodiment.In other embodiments, radiating subassembly 40 can only include the first cooling fin 41 or the second cooling fin 42；It or, radiating subassembly 40 may include the first cooling fin 41 or the second cooling fin 42, but does not include fan 43；Again or, radiating subassembly 40 includes the first cooling fin 41 or the second cooling fin 42, and including fan 43.Work as heat dissipationWhen component 40 includes the first cooling fin 41 or the second cooling fin 42, the condensation end of two the first heat pipes 12 and the condensation end of the second heat pipe 31 all extend to the first cooling fin 41 or the second cooling fin 42.Driver circuit plate in the present embodiment is pcb board, or flexible circuit board.
Further, the fan 43 in the present embodiment is turbofan.Direction of the airflow direction due to caused by turbofan perpendicular to its shaft, therefore first cooling fin 41 and the second cooling fin 42 are separately positioned on to air inlet and the air outlet of fan 43, so that the airflow direction as caused by turbofan 43 extends along the first cooling fin 41 and the second cooling fin 42 of 43 two sides of turbofan, and then realizes and radiated by 43 pairs of turbofan conduction to the heats on the first cooling fin 41 and the second cooling fin 42.
Refering to Fig. 7, the display device of the present embodiment further includes a framework 60, as shown in fig. 7, the display panel (being not drawn into figure) of display device, the second heat pipe 31, driver circuit plate (being not drawn into figure), radiating subassembly 40 and backlight module (being not drawn into figure) are arranged in framework 60.Framework 60 is equipped with air inlet 61 corresponding with the first cooling fin 41 and the second cooling fin 42 and air outlet 62, and in the present embodiment, the air inlet 61 in framework 60 corresponds to the first cooling fin 41, and air outlet 62 corresponds to the second cooling fin 42.When turbofan 43 works, air outside framework 60 enters the first cooling fin 41 from the air inlet 61 in framework 60, heat on first cooling fin 41 can then be conducted into the air of entrance, it dries by turbofan 43 to the second cooling fin 42, it then enables the air for absorbing heat flow out from the air outlet 62 in framework 30, and then reaches the purpose to radiate to all parts in framework 60.In order to prevent airflow reflux and influence radiating efficiency, enable 42 sealed set of the first cooling fin 41 and the second cooling fin.In the present embodiment, a cooling fin uses integrally formed sealing means in the first cooling fin 41 and the second cooling fin 42, another cooling fin is sealed using adhesive tape and seal casinghousing, prevents from reducing cost while airflow reflux to realize.
In other embodiments, the air inlet in framework can correspond to the second cooling fin, and air outlet corresponds to the first cooling fin, and the air inlet that then passes through of air enters the second cooling fin at this time, fromSecond cooling fin is flowed to the first cooling fin, is flowed out eventually by air outlet.
In other embodiments, the first cooling fin and the second cooling fin can also be all made of integrally formed sealing means, can also be all made of adhesive tape and seal casinghousing and be sealed to the first cooling fin and the second cooling fin.
Further, by above-mentioned display device applications in unmanned aerial vehicle (UAV) control terminal, and then the present invention also provides a kind of UAV system embodiment, the UAV system of the present embodiment includes unmanned plane and unmanned aerial vehicle (UAV) control terminal, and unmanned aerial vehicle (UAV) control terminal includes Fig. 5 and display device shown in fig. 6.
To sum up, skilled addressee readily understands that, in backlight module, display device provided by the embodiment of the present invention and UAV system, at least one first heat pipe is arranged in circuit board side the backlight module, and the first heat pipe is enabled to extend along the setting direction of light source, and first the evaporation ends of heat pipe be arranged corresponding to light source, condensation end extends to another part incidence surface side of the not set light source of backlight module.The heat transmission of the light source of backlight module to backlight module is not provided with to the part of light source using the first heat pipe, and then is radiated by the condensation end of the first heat pipe, the radiating efficiency of backlight module is effectively raised.
Mode the above is only the implementation of the present invention; it is not intended to limit the scope of the invention; it is all to utilize equivalent structure or equivalent flow shift made by description of the invention and accompanying drawing content; it is applied directly or indirectly in other relevant technical fields, and is included within the scope of the present invention.