CN202757094U - Light-emitting diode (LED) liquid crystal display and heat-dissipation device of LED backlight source thereof - Google Patents

Light-emitting diode (LED) liquid crystal display and heat-dissipation device of LED backlight source thereof Download PDF

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Publication number
CN202757094U
CN202757094U CN2012203376037U CN201220337603U CN202757094U CN 202757094 U CN202757094 U CN 202757094U CN 2012203376037 U CN2012203376037 U CN 2012203376037U CN 201220337603 U CN201220337603 U CN 201220337603U CN 202757094 U CN202757094 U CN 202757094U
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CN
China
Prior art keywords
heat
led
heat sink
lamp bar
source
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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.)
Expired - Lifetime
Application number
CN2012203376037U
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Chinese (zh)
Inventor
郭东明
柴岩峰
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Shenzhen TCL New Technology Co Ltd
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Shenzhen TCL New Technology Co Ltd
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Priority to CN2012203376037U priority Critical patent/CN202757094U/en
Application granted granted Critical
Publication of CN202757094U publication Critical patent/CN202757094U/en
Anticipated expiration legal-status Critical
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Abstract

The utility model provides a heat-dissipation device of a light-emitting diode (LED) backlight source. The heat-dissipation device of the LED backlight source comprises a back panel, a heat-dissipation panel arranged on the back panel, and a heat pipe arranged between the back panel and the heat-dissipation panel, wherein one part of the heat pipe is fixed with the heat-dissipation plate, and another part of the heat pipe extends out of the heat-dissipation panel to be attached to the back panel. The utility model further provides an LED liquid crystal display, and the heat-dissipation device of the LED backlight source is arranged inside the LED liquid crystal display. According to the heat-dissipation device of the LED backlight source, the heat pipe is arranged between the back panel and the heat-dissipation panel, one part of the heat pipe is fixed with the heat-dissipation plate, and another part of the heat pipe extends out of the heat-dissipation panel to be attached to the back panel. Therefore, the heat-dissipation device of the LED backlight source is not only uniform in heat conduction but also high in heat-dissipation efficiency.

Description

The heat abstractor in LED liquid crystal display and LED-backlit source thereof
Technical field
The utility model relates to technical field of liquid crystal display, relates in particular to the heat abstractor in a kind of LED liquid crystal display and LED-backlit source thereof.
Background technology
At present, the scheme backlight that the LED LCD TV adopts single long limit and two minor face to arrange led light source more, in order to reduce cost, also have single long limit and two minor face are arranged that the scheme backlight of led light source changes the scheme backlight that single minor face is arranged led light source into, can significantly reduce like this LED lamp number of use backlight, but, the number that has reduced the LED lamp just must adopt high-power LED lamp to satisfy brightness requirement, this has just caused LED lamp power relatively high, the heat radiation difficulty need to arrange backlight cooling device and come to be the led light source heat radiation.
The heat abstractor in existing LED-backlit source, as shown in Figure 1, Fig. 1 is the structural representation of the LED-backlit source heat-dissipating device of prior art; Existing LED-backlit source heat-dissipating device comprises: liquid crystal panel 1, LGP 2, lamp bar 3, L-type heat sink 4 and backboard 5, liquid-crystalline glasses 1 and LGP 2 stacked settings, lamp bar 3 is installed in a side of LGP 2, and lamp bar 3 is fixed on the aluminium base, the aluminium base gummed is fixed on the L-type heat sink 4, L-type heat sink 4 is fixed on the backboard 5 by screw, and the heat that 3 work of lamp bar produce can conduct to backboard 5 by L-type heat sink 4, distributes from backboard 5 again.
But, because the heat that lamp bar 3 produces is relatively concentrated, and the thermal conductivity factor less of L-type heat sink 4, need to select the larger L-type heat sink 4 of thickness and width, cost is relatively high, in addition, liquid-crystalline glasses 1 is higher near an end temperature of lamp bar 3, and relatively low away from an end temperature of lamp bar 3, cause the liquid-crystalline glasses 1 both sides temperature difference of being heated large, liquid-crystalline glasses is significantly reduced for 1 service life.
The utility model content
Main purpose of the present utility model provides the heat abstractor in a kind of LED-backlit source, and the heat abstractor that is intended to solve the LED-backlit source is heated concentrated, and thermal conduction effect is poor, the problem that radiating efficiency is low.
The utility model provides the heat abstractor in a kind of LED-backlit source, comprise backboard and be arranged on heat sink on the backboard, also comprise the heat pipe that is arranged between described backboard and the heat sink, the part of described heat pipe and described heat sink are fixed, and a part is extended described heat sink and fitted with backboard.
Preferably, described heat pipe comprises long heat pipe and and described long heat pipe short heat pipe connected vertically.
Preferably, described heat sink is provided with some holddown grooves.
Preferably, the long heat pipe of described heat pipe and short heat pipe are fixed in the holddown groove of described heat sink.
Preferably, some described heat pipes are fixed by heat-conducting double-sided adhesive tape and described heat sink.
Preferably, be fixedly installed lamp bar substrate on the relative one side of described heat sink connection heat pipe, and described lamp bar substrate is provided with the lamp bar.
Preferably, the two ends of described lamp bar substrate are fixed by screws on the described heat sink.
Preferably, described lamp bar substrate bottom surface is fixed by the upper surface of heat-conducting double-sided adhesive tape and described heat sink.
Preferably, fix by screw between described heat sink and the described backboard.
The utility model also provides a kind of LED liquid crystal display, comprises the heat abstractor that is arranged on the LED-backlit source as previously described in the described LED liquid crystal display.
The utility model is by arranging heat pipe between the backboard of the heat abstractor in LED-backlit source and heat sink, the part of heat pipe and described heat sink are fixed, and a part is extended described heat sink and fitted with backboard.Therefore, not only the heat conduction is even for it, and radiating efficiency is high.
Description of drawings
Fig. 1 is the structural representation of the LED-backlit source heat-dissipating device of prior art;
Fig. 2 is the structural representation of the utility model LED-backlit source heat-dissipating device one embodiment;
Fig. 3 is the structure for amplifying schematic diagram of A section among Fig. 2;
Fig. 4 is the structural representation of the utility model LED-backlit source heat-dissipating device radiation plate;
Fig. 5 is the scheme of installation of the utility model LED-backlit source heat-dissipating device radiation plate and flat hot pipe.
The realization of the utility model purpose, functional characteristics and advantage are described further with reference to accompanying drawing in connection with embodiment.
The specific embodiment
Further specify the technical solution of the utility model below in conjunction with Figure of description and specific embodiment.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
Below the heat abstractor in the LED-backlit source that arranges in the LED liquid crystal display of great power LED TV machine describe as example.
See also Fig. 2 and Fig. 3, Fig. 2 is the structural representation of the utility model LED-backlit source heat-dissipating device one embodiment; Fig. 3 is the structure for amplifying schematic diagram of A section among Fig. 2.The utility model provides the heat abstractor in a kind of LED-backlit source, comprise backboard 11 and be arranged on heat sink 9 on the backboard 11, also comprise the flat hot pipe 10 that is arranged between described backboard 11 and the heat sink 9, the part of described flat hot pipe 10 and described heat sink 9 are fixing, and another part extends described heat sink 9 and fits with backboard 11.
Particularly, this LED-backlit source comprises LGP, lamp bar and lamp bar substrate, and a side of described lamp bar substrate is fixedly installed described lamp bar, and places LGP on the opposite side.The relative one side of lamp bar substrate fixed light bar is connected with described heat sink 9.Heat on this lamp bar can conduct on the backboard by heat sink 9, distributes by backboard again.The utility model is by arranging flat hot light between heat sink 9 and backboard 11, and flat hot pipe also extends outside the heat sink, thereby backboard can be conducted to backboard away from an end of lamp bar by flat hot pipe again near the heat of an end of lamp bar, so that the heat conduction evenly.
The utility model is by by arranging flat hot pipe between backboard and heat sink, thereby so that the heat of heat sink can be passed to described backboard 11 away from an end of lamp bar by flat hot pipe 10, thereby the heat conduction is evenly, prolongs the service life of liquid-crystalline glasses.
In conjunction with reference to Fig. 4 and Fig. 5, Fig. 4 is the structural representation of the utility model LED-backlit source heat-dissipating device radiation plate; Fig. 5 is the scheme of installation of the utility model LED-backlit source heat-dissipating device radiation plate and flat hot pipe.This heat sink 9 comprises upper surface and lower surface, the first side 93 that be arranged in parallel and second side 94, connects the 3rd side 95 of first side 93 and second side 94.The upper surface of described heat sink 9 is connected with lamp bar substrate 7, lower surface is provided with some holddown grooves, and this holddown groove comprises and draw aluminium groove 92 and some groove millings 91 that this draws aluminium groove 92 to arrange near first side 93, one end of described groove milling 91 is communicated with drawing aluminium groove 92, and the other end runs through second side 94.Described flat hot pipe 10 is " L " type, comprises that long heat pipe 101 reaches and long heat pipe 101 short heat pipes 102 connected vertically, and this weak point heat pipe 102 fixedly is housed in described drawing in the aluminium groove 92, and long heat pipe 101 fixedly is housed in the described groove milling 91, and extends outside the groove milling 91.Some described flat hot pipes 10 stick in the drawing in aluminium groove 92 and the some groove millings 91 of lower surface of described heat sink 9 by the heat-conducting double-sided adhesive tape, the long heat pipe 101 of " L " type flat hot pipe 10 and short heat pipe 102 are fixed in the holddown groove of described heat sink, " L " type can be better and heat sink 9 draw aluminium groove 92 and groove milling 91 assemblings, long heat pipe 101 assembles with drawing aluminium groove 92 with groove milling 91 assemblings, short heat pipe 102.The fixing mode of " L " type bending structure and heat sink 9 increases the contact area of know clearly flat hot pipe 10 and described heat sink 9, make heat can be fast long heat pipe by " L " type flat hot pipe 10 other end that is passed to backboard 11 dispel the heat, simultaneously, bond plies is also so that heat-conducting effect is better, thereby the heat conduction evenly, and radiating rate is faster.
Be fixedly installed lamp bar substrate 7 on the relative one side of described heat sink 9 connection flat hot pipes, and described lamp bar substrate 7 is provided with lamp bar 8, lamp bar 8 is arranged on a side of described lamp bar substrate 7, by lamp bar substrate 7 the heat transferred heat sink 9 that lamp bar 8 produces is carried out radiating treatment, the area of exaggerative lamp bar substrate 7, increase the heat transfer area between lamp bar substrate 7 and the heat sink 9, reduce the heat flow density of lamp bar 8, improve the heat transfer efficiency of lamp bar substrate 7, lamp bar substrate 7 can adopt the aluminium base of perfect heat-dissipating, the upper surface of described lamp bar substrate 7 underrun heat-conducting double-sided adhesive tapes and described heat sink 9 is fixed, bond plies can strengthen heat-conducting effect, the two ends of described lamp bar substrate 7 are fixed by screws on the described heat sink 9, by the fixing mode of screw so that lamp bar substrate 7 and heat sink 9 combinations tightr, be connected firmly, so that heat sink 9 radiating effects are better.
Fix by screw between described heat sink 9 and the described backboard 11.Be connected by screw between heat sink 9 and the backboard 11, so that heat sink 9 is connected with backboard 11 is more firm, simultaneously, it is tightr that flat hot pipe 10 and described backboard 11 are fitted, and thermal conduction effect is better.
The utility model also provides a kind of LED liquid crystal display, comprises the heat abstractor that is arranged on the LED-backlit source as previously described in the described LED liquid crystal display.
The heat abstractor in LED-backlit source will conduct to backboard 11 opposite sides fast near the heat that 8 work of lamp bar 8 one side lamp bars are sent, so that the LED liquid crystal display can not concentrate pyrocondensation to lack service life because of one-sided being heated near the liquid-crystalline glasses of lamp bar one side, improved product quality.Simultaneously, the heat abstractor in the LED-backlit source that the utility model embodiment provides has solved the problem that must strengthen by the thickness that increases heat sink 9 radiating effect, has also reduced the heat radiation cost that therefore causes.
The utility model embodiment is by arranging flat hot pipe 10 between the backboard 11 of the heat abstractor in LED-backlit source and heat sink 9, an end of flat hot pipe 10 and described heat sink 9 are fixing, and the other end extends described heat sink 9 and fits with backboard 11.Therefore, not only the heat conduction is even for it, and radiating efficiency is high.Simultaneously, enlarge the heat transfer area of lamp bar substrate 7, also so that heat radiation is faster.
The above only is preferred embodiment of the present utility model; be not so limit its claim; every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to do; directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.

Claims (10)

1. the heat abstractor in a LED-backlit source, comprise backboard and be arranged on heat sink on the backboard, it is characterized in that, also comprise the heat pipe that is arranged between described backboard and the heat sink, the part of described heat pipe and described heat sink are fixed, and a part is extended described heat sink and fitted with backboard.
2. the heat abstractor in LED-backlit according to claim 1 source is characterized in that, described heat pipe comprise long heat pipe and with described long heat pipe short heat pipe connected vertically.
3. the heat abstractor in LED-backlit according to claim 2 source is characterized in that described heat sink is provided with some holddown grooves.
4. the heat abstractor in LED-backlit according to claim 3 source is characterized in that, the long heat pipe of described heat pipe and short heat pipe are fixed in the holddown groove of described heat sink.
5. the heat abstractor in LED-backlit according to claim 1 source is characterized in that some described heat pipes are fixed by heat-conducting double-sided adhesive tape and described heat sink.
6. the heat abstractor in LED-backlit according to claim 1 source is characterized in that, described heat sink connects on the relative one side of heat pipe and is fixedly installed lamp bar substrate, and described lamp bar substrate is provided with the lamp bar.
7. the heat abstractor in LED-backlit according to claim 6 source is characterized in that the two ends of described lamp bar substrate are fixed by screws on the described heat sink.
8. the heat abstractor in LED-backlit according to claim 6 source is characterized in that described lamp bar substrate is fixed by heat-conducting double-sided adhesive tape and described heat sink.
9. the heat abstractor in LED-backlit according to claim 1 source is characterized in that, fixes by screw between described heat sink and the described backboard.
10. a LED liquid crystal display is characterized in that, comprises the heat abstractor such as the described LED-backlit of any one source among the claim 1-9 that is arranged in the described LED liquid crystal display.
CN2012203376037U 2012-07-12 2012-07-12 Light-emitting diode (LED) liquid crystal display and heat-dissipation device of LED backlight source thereof Expired - Lifetime CN202757094U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012203376037U CN202757094U (en) 2012-07-12 2012-07-12 Light-emitting diode (LED) liquid crystal display and heat-dissipation device of LED backlight source thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012203376037U CN202757094U (en) 2012-07-12 2012-07-12 Light-emitting diode (LED) liquid crystal display and heat-dissipation device of LED backlight source thereof

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CN202757094U true CN202757094U (en) 2013-02-27

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105378916A (en) * 2013-12-13 2016-03-02 华为终端有限公司 Heat radiation structure and electronic device having the heat radiation structure
CN107771011A (en) * 2017-09-28 2018-03-06 深圳市英威腾电气股份有限公司 A kind of flexible phase-change heat radiating device
CN109541836A (en) * 2019-01-28 2019-03-29 惠州市华星光电技术有限公司 Back board structure and liquid crystal display device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105378916A (en) * 2013-12-13 2016-03-02 华为终端有限公司 Heat radiation structure and electronic device having the heat radiation structure
CN105378916B (en) * 2013-12-13 2018-09-28 华为终端(东莞)有限公司 Radiator structure and electronic device with the radiator structure
CN107771011A (en) * 2017-09-28 2018-03-06 深圳市英威腾电气股份有限公司 A kind of flexible phase-change heat radiating device
CN109541836A (en) * 2019-01-28 2019-03-29 惠州市华星光电技术有限公司 Back board structure and liquid crystal display device

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Granted publication date: 20130227