CN201561340U - Back light module - Google Patents
Back light module Download PDFInfo
- Publication number
- CN201561340U CN201561340U CN2009202779965U CN200920277996U CN201561340U CN 201561340 U CN201561340 U CN 201561340U CN 2009202779965 U CN2009202779965 U CN 2009202779965U CN 200920277996 U CN200920277996 U CN 200920277996U CN 201561340 U CN201561340 U CN 201561340U
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- Prior art keywords
- light source
- backboard
- heat pipe
- module
- heat
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Abstract
The utility model discloses a back light module. The back light module comprises a backing plate, on which a light guide plate is arranged and the side surface of the light guide plate is provided with a light source module, wherein the backing plate is provided with a first groove for containing a bended heat pipe, one end of the heat pipe is contacted with the light source module directly, while the other end of the heat pipe is bended and extends to the center of the backing plate. In the embodiment of the utility model, the back light module can emit out the heat which is generated by the light source module through the backing plate, thus being capable of effectively improving the heat radiating effect of the back light module, lowering the temperature of the light source module and prolonging the service life of the back light module.
Description
Technical field
The utility model relates to the backlight liquid crystal display module, particularly relates to a kind of module backlight with heat dispersion.
Background technology
Owing to use advantages such as operating voltage is low, power consumption is little, display mode is flexible, radiation is low, (Liquid Crystal Display LCD) is widely used in various fields to LCD, as fields such as computer, mobile phone, TV and measurement demonstrations.LCD comprises display panels, and display panels comprises thin film transistor base plate, color film and is folded in layer of liquid crystal molecule between the two substrates.In addition, LCD also comprises module backlight, is used to display panels that light source is provided, and makes the LCD displayable image.
At present, the module backlight of LCD includes the side-light type structure, it comprises LGP and light source, light source is arranged on the side of LGP, the light that light source sends is by behind this LGP, from the exiting surface of LGP light is offered display panels, the needs that show with the image that satisfies display panels.But in actual use, when LCD worked long hours, the heat that light source distributes can cause light source place temperature too high, if work long hours at high temperature, can reduce the service life of light source, thereby reduced the life-span of entire aphototropism mould and LCD; Simultaneously, if temperature is too high, also may cause near the LGP of light source to melt; When module backlight was assembled into LCD, the liquid crystal molecule near light source on the display panels lost efficacy easily, and it is bad to cause image to show, the heat at light source place also can influence the display quality of LCD, as picture weave or flicker etc.Therefore, the too high problem of temperature that how to solve die set light source backlight is technical issues that need to address.
In the existing module backlight, generally be the arranged outside heat-conducting layer at light source, utilize heat pipe to be connected with heat-conducting layer, the heat that the light source place is produced is dispersed in the outside air of module backlight, thereby realizes the heat radiation to light source in the module backlight; In addition, the also favourable form that is used in light source arranged outside ventilation blower in the prior art is dispersed into external environment by ventilation blower with the heat that the light source place produces, and realizes the heat radiation to module backlight.
The inventor finds that in realizing process of the present utility model existing module backlight is generally by the arranged outside radiator structure at module backlight, dispel the heat in the outside that the heat at light source place is directly conducted to module backlight, the radiator structure complexity, and radiator structure is independent of module backlight, install and fix complexity, increased the volume of whole LCD.
The utility model content
The purpose of this utility model provides a kind of module backlight, can effectively solve temperature too high technical problem in light source place in the module backlight, and the heat that the light source module is produced conducts on the backboard apace, utilizes backboard to dispel the heat, and module volume backlight is little.
The utility model embodiment provides a kind of module backlight, comprising: backboard, and described backboard is provided with LGP, and the side of described LGP is provided with the light source module; Wherein, offer first groove of ccontaining bending shape heat pipe on the described backboard, an end of described heat pipe directly contacts with described light source module, and the other end bending of described heat pipe extends to the center of described backboard.
In the above-mentioned module backlight, be filled with packing material in the gap between the described heat pipe and first groove.And described packing material is a Heat Conduction Material.
In the above-mentioned module backlight, described light source module is the illuminated light source in top, and described light source module comprises and the vertically disposed pcb board of described backboard that described pcb board is provided with the LED lamp, the back side of described pcb board is provided with heat-conducting block, and described heat-conducting block directly contacts with described heat pipe.Offer second groove on the described heat-conducting block, the end that described heat pipe contacts with the light source module is installed between described first groove and second groove.
In addition, described light source module is the illuminated light source of side, and described light source module comprises the pcb board that lies on the described backboard, and described pcb board is provided with the LED lamp, and described pcb board directly contacts with described heat pipe.Perhaps, described light source module is a cold cathode fluorescent lamp pipe light source, and described light source module comprises fluorescent tube and lampshade, and described lampshade directly contacts with described heat pipe.
The surface of a relative side with heat pipe is provided with the ventilation unit that the heat that is used for conducting on the backboard distributes on the described backboard.Described ventilation unit comprises the fan that is arranged on the described backboard, is provided with flow-stopping plate around the described fan, also is provided with the fan bonnet on the described backboard, and described fan bonnet is provided with air inlet and air outlet.Described number of fans is at least 1.
Present embodiment module backlight is by being provided with heat pipe on backboard, and an end of heat pipe is directly contacted with backlight source module, can fast and effeciently the heat that produces on the backlight source module be conducted to the center of backboard, and utilize the bigger heat-delivery surface of backboard to dispel the heat, therefore, can effectively improve the radiating efficiency of light source module and entire aphototropism mould, reduce the temperature of light source module and entire aphototropism mould, avoid causing defectives such as light source life reduction because of light-source temperature is too high, improved the service life of light source and entire aphototropism mould, effectively guarantee the light effect that of module backlight, guaranteed to use the image displaying quality of the LCD of this module backlight; Simultaneously, present embodiment directly utilizes backboard to dispel the heat, and radiator structure is simple, and it is convenient to realize, the volume of entire aphototropism mould is small and exquisite, has satisfied the needs of LCD miniaturization development.
Description of drawings
Fig. 1 is the front view of the utility model module embodiment one backlight;
Fig. 2 be among Fig. 1 A-A to generalized section;
Fig. 3 is a mounting structure schematic diagram of heat pipe among the utility model embodiment;
Fig. 4 is another mounting structure schematic diagram of heat pipe among the utility model embodiment;
Fig. 5 is the front view of the utility model module embodiment two backlight;
Fig. 6 be among Fig. 5 B-B to generalized section;
Fig. 7 is the rearview of the utility model module embodiment three backlight;
Fig. 8 be among Fig. 7 C-C to generalized section.
The specific embodiment
For the purpose, technical scheme and the advantage that make the utility model embodiment clearer, below in conjunction with the accompanying drawing among the utility model embodiment, technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
Fig. 1 is the front view of the utility model module embodiment one backlight; Fig. 2 be among Fig. 1 A-A to generalized section.As illustrated in fig. 1 and 2, present embodiment comprises backboard 1, LGP 2 and light source module 3, wherein, LGP 2 is arranged on the backboard 1, light source module 3 is arranged on the side of LGP 2, offer first groove 11 on the backboard 1, be used for ccontaining bending shape heat pipe 4, one end of this heat pipe 4 directly contacts with light source module 3, the other end bending of heat pipe 4 extends to the center of backboard 1, the heat that light source module 3 produces can conduct to the center of backboard 1 apace by heat pipe 4, and by backboard 1 heat is distributed, to reduce the temperature of light source module 3.
In the present embodiment, also can be provided with reflector plate between LGP 2 and the backboard 1, the upper surface of LGP 2, be also to be provided with the film material on the exiting surface of LGP 2, wherein, the light that reflector plate can be injected light source module 3 LGP 2 from the side reflexes to the exiting surface of LGP 2, penetrate after making light can homodisperse exiting surface enter the film material from LGP 2, for display panels provides uniform light, satisfy the needs that the display panels image shows, simultaneously, four angles of LGP 2 can be fixed on the backboard by locating piece, make being fixed on the backboard that LGP 2 can be stable.In the present embodiment, because backboard 1 has bigger surface area and backboard 1 is to be made by the good metal material of thermal diffusivity, therefore, the heat that conducts on the backboard 1 by heat pipe 4 can distribute by this backboard 1 surface, thereby effectively reduce the temperature of light source module 3 and entire aphototropism mould, avoid parts Yin Wendu in the module backlight too high and damage, improve module backlight and go out light effect, to guarantee the image displaying quality of LCD.
In the present embodiment, as illustrated in fig. 1 and 2, described light source module 3 can be the illuminated light source in top, and particularly, this light source module 3 can comprise and backboard 1 vertically disposed pcb board 31 that pcb board 31 is provided with LED lamp 32; The back side of pcb board 31 is provided with heat-conducting block 5, and this heat-conducting block 5 directly contacts with heat pipe 4, so that the heat on the pcb board 31 can fast and effeciently conduct to heat pipe 4 by heat-conducting block 5, and conducts to the center of backboard 1 by heat pipe 4.As can be seen,, can effectively improve the heat transfer effect between light source module and the heat pipe, improve the radiating efficiency of module backlight by increasing heat-conducting block.
Fig. 3 is a mounting structure schematic diagram of heat pipe among the utility model embodiment.In the present embodiment, heat pipe is except can directly being embedded in first groove on backboard, so that heat pipe is fixed on the backboard, realize outside opposite heat tube fixing, as shown in Figure 3, present embodiment also can be filled with packing material in the gap between the heat pipe 4 and first groove 11, so that heat pipe 4 more reliablely and stablely is fixed in first groove 11, and heat pipe 4 is contacted well with backboard 1, to improve heat transfer effect, simultaneously, this packing material specifically can be Heat Conduction Material, to improve the heat transfer efficiency between heat pipe and the backboard further, and light source module, also can be fixed together between heat pipe and the backboard by screw, to increase fastness and the reliability that heat pipe is installed, increase heat pipe and light source module and backboard stability in contact, improve heat transfer effect.In addition, according to the actual needs, in the present embodiment, heat pipe also can directly be embedded in first groove, makes heat pipe be fixed on reliably on the backboard, and it can reach the effect of conduction heat equally.
Fig. 4 is another mounting structure schematic diagram of heat pipe among the utility model embodiment.Particularly, as shown in Figure 4, also can offer second groove 51 on the present embodiment heat-conducting block 5, the end that heat pipe 4 contacts with the light source module can be installed between first groove 11 and second groove 51, so that heat pipe 4 can contact with backboard 1 with heat-conducting block 5 effectively, thereby heat conducts to the efficient on the backboard 1 on the raising light source module, improves the radiating efficiency of module backlight.Simultaneously, between first groove 11 and second groove 51, also can be provided with packing material, and this packing material can be Heat Conduction Material, can improve the heat exchange efficiency of heat pipe between heat-conducting block and backboard further, improve heat transfer effect.
As can be seen, present embodiment module backlight is by being provided with heat pipe on backboard, and an end of heat pipe is directly contacted with backlight source module, can fast and effeciently the heat that produces on the backlight source module be conducted to the center of backboard, and utilize the bigger heat-delivery surface of backboard to dispel the heat, therefore, can effectively improve the radiating efficiency of light source module and entire aphototropism mould, reduce the temperature of light source module and entire aphototropism mould, avoid causing defectives such as light source life reduction because of light source place temperature is too high, improved the service life of light source and entire aphototropism mould, effectively guarantee the light effect that of module backlight, guaranteed to use the image displaying quality of the LCD of this module backlight; Simultaneously, present embodiment directly utilizes backboard to dispel the heat, and heat radiation realizes convenient, and the volume of entire aphototropism mould is small and exquisite, has satisfied the needs of LCD miniaturization development; In addition, the present embodiment technical scheme is connected the light source module by heat-conducting block is set with heat pipe, make that the heat transference efficiency between light source module and the heat pipe is higher, has improved the radiating effect of module backlight further.
Fig. 5 is the front view of the utility model module embodiment two backlight; Fig. 6 be among Fig. 5 B-B to generalized section.Different with above-mentioned Fig. 1 and 2 illustrated embodiment technical scheme is, light source module in the present embodiment is the illuminated light source module of side, particularly, shown in Fig. 6 and 7, present embodiment light source module 3 also is arranged on LGP 2 sides, and light source module 3 can comprise the pcb board 33 that lies on the backboard 1, and pcb board 33 is provided with LED lamp 34, pcb board 33 be arranged on backboard 1 on first groove 11 in heat pipe 4 directly contact.By utilizing pcb board 33 directly to contact, the heat that the LED lamp on the pcb board 33 34 produces can be conducted to the center of whole back plate 1, and heat be distributed by backboard 1 with heat pipe 4.
In the present embodiment, heat pipe can directly be embedded in first groove, perhaps, also can be filled with packing material in first groove, perhaps, the 3rd groove is set on pcb board, makes heat pipe be arranged between first groove and the 3rd groove, its concrete structure can be similar with the mounting means of heat pipe in the foregoing description one, do not repeat them here.
In addition, in the present embodiment, the light source module in the module backlight also can specifically can comprise fluorescent tube and lampshade for cathode fluorescent lamp pipe light source, and the heat pipe that is embedded on lampshade and the backboard is directly contacted, thereby the heat that fluorescent tube is produced distributes.Its concrete structure and Fig. 5 and 6 illustrated embodiments are similar, no longer specify at this.
Fig. 7 is the rearview of the utility model module embodiment three backlight; Fig. 8 be among Fig. 7 C-C to generalized section.On the basis of technical solutions of above embodiments, shown in Fig. 7 and 8, on backboard 1, also can be provided with ventilation unit 6 in the present embodiment with the surface of heat pipe 4 relative sides, the heat that is used for conducting on the backboard 1 distributes.Can accelerate heat conduction on the backboard 1 by ventilation unit is set, simultaneously, can reduce the temperature of heat pipe, improve the heat transference efficiency of heat pipe further at ventilation unit one end.
In the present embodiment shown in Fig. 7 and 8, described ventilation unit 6 specifically can comprise the fan 61 that is arranged on the backboard 1, around fan 61, be provided with flow-stopping plate 62, also be provided with fan bonnet 63 on the backboard 1, fan bonnet 63 is provided with air inlet 631 and air outlet 632, and quantity is set should be at least 1 of fan 61 is to improve ventilation effect.Particularly, fan 61 is arranged on the center of backboard 1 in the present embodiment, promptly in the end of heat pipe 4, when fan 61 is started working, it can suck cold wind by air inlet 631 from external environment, and the heat of backboard center position taken out of in the external environment by air outlet 632, thereby reduce the temperature of backboard center, like this, heat pipe is positioned at the temperature of an end of backboard center will be lower, make heat pipe the heat that is in light source module one end can be passed to the backboard center apace, accelerate heat transference efficiency, reduce the temperature at light source module place fast.
As can be seen, present embodiment can improve the radiating effect of back plate surface further by in back plate surface ventilation unit being set, and the heat transfer effect of accelerating heat pipe, can effectively improve the integral heat sink performance of module backlight, reduce the temperature of light source module and module backlight fast.
It should be noted that at last: above embodiment is only in order to explanation the technical solution of the utility model but not limit it, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that: it still can make amendment or be equal to replacement the technical solution of the utility model, and these modifications or be equal to replacement and also can not make amended technical scheme break away from the spirit and scope of technical solutions of the utility model.
Claims (10)
1. module backlight comprises: backboard, and described backboard is provided with LGP, and the side of described LGP is provided with the light source module; It is characterized in that, offer first groove of ccontaining bending shape heat pipe on the described backboard, an end of described heat pipe directly contacts with described light source module, and the other end bending of described heat pipe extends to the center of described backboard.
2. module backlight according to claim 1 is characterized in that, is filled with packing material in the gap between the described heat pipe and first groove.
3. module backlight according to claim 2 is characterized in that, described packing material is a Heat Conduction Material.
4. module backlight according to claim 1, it is characterized in that, described light source module is the illuminated light source in top, described light source module comprises and the vertically disposed pcb board of described backboard, described pcb board is provided with the LED lamp, the back side of described pcb board is provided with heat-conducting block, and described heat-conducting block directly contacts with described heat pipe.
5. module backlight according to claim 4 is characterized in that, offers second groove on the described heat-conducting block, and the end that described heat pipe contacts with the light source module is installed between described first groove and second groove.
6. module backlight according to claim 1, it is characterized in that described light source module is the illuminated light source of side, described light source module comprises the pcb board that lies on the described backboard, described pcb board is provided with the LED lamp, and described pcb board directly contacts with described heat pipe.
7. module backlight according to claim 1 is characterized in that, described light source module is a cold cathode fluorescent lamp pipe light source, and described light source module comprises fluorescent tube and lampshade, and described lampshade directly contacts with described heat pipe.
8. module backlight according to claim 1 is characterized in that, the surface of a relative side with heat pipe is provided with the ventilation unit that the heat that is used for conducting on the backboard distributes on the described backboard.
9. module backlight according to claim 8, it is characterized in that described ventilation unit comprises the fan that is arranged on the described backboard, be provided with flow-stopping plate around the described fan, also be provided with the fan bonnet on the described backboard, described fan bonnet is provided with air inlet and air outlet.
10. module backlight according to claim 9 is characterized in that, described number of fans is at least 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202779965U CN201561340U (en) | 2009-12-21 | 2009-12-21 | Back light module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202779965U CN201561340U (en) | 2009-12-21 | 2009-12-21 | Back light module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201561340U true CN201561340U (en) | 2010-08-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202779965U Expired - Lifetime CN201561340U (en) | 2009-12-21 | 2009-12-21 | Back light module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201561340U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949527A (en) * | 2010-09-29 | 2011-01-19 | 友达光电股份有限公司 | Radiator structure, backlight module and display device for upright use |
| CN102749741A (en) * | 2011-04-19 | 2012-10-24 | 青岛海信电器股份有限公司 | Liquid crystal display device and heat dissipation method |
| WO2018176679A1 (en) * | 2017-03-31 | 2018-10-04 | 京东方科技集团股份有限公司 | Backlight module |
| CN111326066A (en) * | 2020-04-08 | 2020-06-23 | 惠州市华星光电技术有限公司 | Back plate, backlight module and display device |
-
2009
- 2009-12-21 CN CN2009202779965U patent/CN201561340U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949527A (en) * | 2010-09-29 | 2011-01-19 | 友达光电股份有限公司 | Radiator structure, backlight module and display device for upright use |
| CN101949527B (en) * | 2010-09-29 | 2012-02-01 | 友达光电股份有限公司 | Radiator structure, backlight module and display device for upright use |
| CN102749741A (en) * | 2011-04-19 | 2012-10-24 | 青岛海信电器股份有限公司 | Liquid crystal display device and heat dissipation method |
| WO2018176679A1 (en) * | 2017-03-31 | 2018-10-04 | 京东方科技集团股份有限公司 | Backlight module |
| CN111326066A (en) * | 2020-04-08 | 2020-06-23 | 惠州市华星光电技术有限公司 | Back plate, backlight module and display device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100825 |
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| CX01 | Expiry of patent term |