CN202691977U - LED (Light Emitting Diode) backlight cooling device and liquid crystal display - Google Patents

LED (Light Emitting Diode) backlight cooling device and liquid crystal display Download PDF

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Publication number
CN202691977U
CN202691977U CN201220278722XU CN201220278722U CN202691977U CN 202691977 U CN202691977 U CN 202691977U CN 201220278722X U CN201220278722X U CN 201220278722XU CN 201220278722 U CN201220278722 U CN 201220278722U CN 202691977 U CN202691977 U CN 202691977U
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CN
China
Prior art keywords
led
backboard
backlit
lamp bar
heat abstractor
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.)
Expired - Fee Related
Application number
CN201220278722XU
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Chinese (zh)
Inventor
郭东明
柴岩峰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen TCL New Technology Co Ltd
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Shenzhen TCL New Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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Priority to CN201220278722XU priority Critical patent/CN202691977U/en
Application granted granted Critical
Publication of CN202691977U publication Critical patent/CN202691977U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses an LED (Light Emitting Diode) backlight cooling device and a liquid crystal display. The LED backlight cooling device comprises a backboard, wherein a lamp strip base plate is arranged at one part (close to the lateral side of the backboard) on the inner surface of the backboard; and at least one LED lamp is arranged at one part (close to the lateral side of the backboard) on the lamp strip base plate. According to the LED backlight cooling device and the liquid crystal display, the lamp strip base plate of the LED backlight cooling device is directly fixed on the backboard and an LED lamp is arranged at one plane of the lamp strip base plate, heat generated by the LED is directly conducted from one plane to another plane of the lamp strip base plate and the heat is rapidly radiated onto the backboard through a heat conduction plane of large contact area of the lamp strip base plate and the backboard, so that the cooling efficiency of the LED backlight cooling device is improved.

Description

LED-backlit heat abstractor and liquid crystal display
Technical field
The utility model relates to the display technology field, especially relates to a kind of LED-backlit heat abstractor and liquid crystal display.
Background technology
The light-emitting diode display frame is narrower, and its outward appearance is more beautiful comparatively speaking, also just more welcome by client.Therefore light-emitting diode display is towards super narrow frame future development.
In order to reduce cost backlight, the scheme backlight with single long limit changes single minor face scheme into usually, thereby can significantly reduce LED lamp number backlight simultaneously, to reduce cost.But reduced the number of LED lamp, just must adopt the larger LED lamp of power satisfying brightness requirement, and the heat of larger its generation of LED lamp of power is also relatively large.
Referring to Fig. 1, tradition LED-backlit heat abstractor comprises that lamp bar 3, periphery have the backboard 2 of sidewall 21 and be provided with the L-type radiator 1 of base plate 11 and support plate 12, wherein lamp bar 3 is fixed in by bond plies on the support plate 12 of L-type radiator 1, and the base plate 11 of L-type radiator 1 is fixed on the backboard 2 by screw.On the one hand, owing to have support plate 12, lamp bar 3 and the bond plies bonding with the lamp bar of L-type radiator 1 on backboard 2 sidewalls 21, jointly form larger thickness, therefore caused the light-emitting diode display frame relatively large; On the other hand, the heat that the LED lamp produces is larger, and need to pass through base plate 11 and the three road thermal resistances of the air gap between the backboard 2 of L-type radiator 1, double faced adhesive tape and L-type radiator 1 when its dissipation of heat, cause relatively difficulty of heat radiation, need to strengthen backboard 2 thickness for this reason, in order to heat is spread along backboard 2 in-plane large tracts of land, thereby the cost of heat radiation backlight is higher.
The utility model content
Main purpose of the present utility model is to provide a kind of LED-backlit heat abstractor and liquid crystal display, can reduce again display frame size when improving the LED-backlit heat-diffusing efficiency of heat abstractor.
The LED-backlit heat abstractor that the utility model proposes comprises a backboard, and the part near the backboard side on the described backboard inner surface is provided with lamp bar substrate; Part near the backboard side on the described lamp bar substrate is provided with at least one LED lamp.
Preferably, the exiting surface of described LED lamp is perpendicular to the plane of described lamp bar substrate.
Preferably, be provided with radiating tube with described lamp bar substrate corresponding position on the described backboard outer surface.
Preferably, described radiating tube is provided with at least one, and described radiating tube evenly arranges along the orientation of LED lamp on the backboard outer surface.
Preferably, described radiating tube is the flat radiating tube.
Preferably, described radiating tube is fixed on the described backboard outer surface by bond plies.
Preferably, described lamp bar substrate is fixed on the inner surface of described backboard by bond plies and screw.
The utility model proposes a kind of liquid crystal display in addition, comprises a LED-backlit heat abstractor, and described LED-backlit heat abstractor comprises a backboard, and the part near the backboard side on the described backboard inner surface is provided with lamp bar substrate; Part near the backboard side on the described lamp bar substrate is provided with at least one LED lamp.
Preferably, the above-described LED-backlit heat abstractor of described LED-backlit heat abstractor.
LED-backlit heat abstractor of the present utility model and liquid crystal display, because the lamp bar substrate of LED-backlit heat abstractor is directly fixed on the backboard, the backboard side does not have the common thickness that forms of support plate, lamp bar and the double faced adhesive tape of the L-type radiator that exists in the prior art, thereby has reduced greatly the size of display frame; The LED lamp is located at the one side of lamp bar substrate simultaneously, so that the heat that LED produces directly conducts to another side by the one side of lamp bar substrate, and the heat-transfer area that contacts with the backboard large tracts of land via lamp bar substrate, heat is dispersed on the backboard fast, has guaranteed the radiating efficiency of LED-backlit heat abstractor.
Description of drawings
Fig. 1 is the structural representation of LED-backlit heat abstractor of the prior art;
Fig. 2 is the structural representation of LED-backlit heat abstractor one embodiment of the present utility model;
Fig. 3 is the structural representation of lamp bar one embodiment of LED-backlit heat abstractor of the present utility model;
Fig. 4 is the structural representation of LED-backlit heat abstractor one preferred embodiment of the present utility model.
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
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.
Referring to Fig. 2, Fig. 2 is the structural representation of LED-backlit heat abstractor one embodiment of the present utility model.The LED-backlit heat abstractor of present embodiment comprises a backboard 100, and the part near backboard 100 sides on described backboard 100 inner surfaces is provided with lamp bar substrate 210; Part near backboard 100 sides on the described lamp bar substrate 210 is provided with at least one LED lamp 220.Wherein, the part top that the LED lamp is not set on the described lamp bar substrate 210 is provided with a LGP 400.Also be provided with side plate 110 on the described side of backboard 110.
Lamp bar substrate 210 in the present embodiment is wider than traditional lamp bar substrate, thereby has enlarged the heat transfer area that lamp bar substrate 210 contacts with backboard 100.And LED lamp 220 is located at the one side of lamp bar substrate 210, so that the heat that LED lamp 220 produces directly conducts to another side by the one side of lamp bar substrate 210, and the heat-transfer area that contacts with backboard 100 large tracts of land via lamp bar substrate 210, heat is dispersed on the backboard 100 fast, thereby has guaranteed the radiating efficiency of LED lamp 220.Simultaneously, because lamp bar substrate 210 is directly fixed on the backboard 100, backboard 100 sides do not have the common thickness that forms of support plate, lamp bar and double faced adhesive tape of the L-type radiator that exists in the prior art, have therefore reduced greatly the size of display frame.
Further, described lamp bar substrate 210 can be fixed on the inner surface of described backboard 100 by bond plies and/or screw.In the present embodiment, lamp bar substrate 210 is adhered on backboard 100 inner surfaces by bond plies first, so that lamp bar substrate 210 fully contacts with backboard 100, does not stay the air gap, is conducive to transmitting fully fast of heat.With screw that lamp bar substrate 210 and backboard 100 is further fixing more at last.Fix by the dual of bond plies and screw, can guarantee that lamp bar substrate 210 and fully contacting of backboard 100 are beneficial to heat radiation on the one hand, on the other hand so that lamp bar substrate 210 and backboard 100 are fixed more firmly.
Further, referring to Fig. 3, Fig. 3 is the structural representation of LED lamp bar one embodiment in the utility model.The exiting surface of described LED lamp 220 is perpendicular to the plane of described lamp bar substrate 210, certainly the exiting surface of LED lamp 220 also can with the plane of lamp bar substrate 210 in obtuse angle or the acute angle setting.The exiting surface of traditional LED lamp is parallel with lamp bar base plan, present embodiment is when welding LED lamp 220, exiting surface 221 and vertical setting the in lamp bar substrate 210 planes with LED lamp 220, then LGP 400 is placed in parallel on the lamp bar substrate 210, so that the light direct irradiation of LED lamp 220 is transmitted to opposite side in a side and the straight line of LGP 400, reduce the loss of LED lamp 220 light.
Further, referring to Fig. 4, Fig. 4 is the structural representation of LED-backlit heat abstractor one preferred embodiment of the present utility model.Be provided with radiating tube 300 with described lamp bar substrate 210 corresponding positions on described backboard 100 outer surfaces.The radiating tube 300 of present embodiment is provided with at least one, and the orientation along LED lamp 220 on backboard 100 outer surfaces of described radiating tube 300 evenly arranges, certainly also can inhomogeneously arrange, the characteristic of radiating tube 300 is in case an end is heated, its internal material can undergo phase transition, thus be exceedingly fast heat is conducted to the other end.When LED lamp 220 produces heat, heat is transmitted to radiating tube 300 near an end of LED lamp 220, radiating tube 300 1 ends are heated, its internal material undergoes phase transition, be exceedingly fast with the other end of heat transferred away from LED lamp 220, the other end finally conducts to backboard 100 away from an end of LED lamp 220 again with heat transferred backboard 100, thereby has further increased the radiating efficiency of LED lamp 220.
Further, described radiating tube 300 is flat radiating tube 300.Present embodiment uses the purpose of flat radiating tube 300, is the heat-transfer area that contacts with backboard 100 in order to enlarge radiating tube 300; Simultaneously, present embodiment is fixed in radiating tube 300 on backboard 100 outer surfaces by bond plies, stops to form the air gap between its contact-making surface so that radiating tube 300 fully contacts with backboard 100, thereby more is beneficial to the conduction of heat, has improved radiating efficiency.
The utility model proposes a kind of LCDs simultaneously, comprises a LED-backlit heat abstractor, and described LED-backlit heat abstractor comprises a backboard, and the part near the backboard side on the described backboard inner surface is provided with lamp bar substrate; Part near the backboard side on the described lamp bar substrate is provided with at least one LED lamp.LED-backlit heat abstractor described in the present embodiment is the related LED-backlit heat abstractor of above-described embodiment in the utility model, does not repeat them here.
Should be understood that; it below only is preferred embodiment of the present utility model; can not therefore limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to do; or 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 (9)

1. a LED-backlit heat abstractor is characterized in that, comprises a backboard, and the part near the backboard side on the described backboard inner surface is provided with lamp bar substrate; Part near the backboard side on the described lamp bar substrate is provided with at least one LED lamp.
2. LED-backlit heat abstractor according to claim 1 is characterized in that, the exiting surface of described LED lamp is perpendicular to the plane of described lamp bar substrate.
3. LED-backlit heat abstractor according to claim 1 is characterized in that, is provided with radiating tube with described lamp bar substrate corresponding position on the described backboard outer surface.
4. LED-backlit heat abstractor according to claim 3 is characterized in that, described radiating tube is provided with at least one, and described radiating tube evenly arranges along the orientation of LED lamp on the backboard outer surface.
5. according to claim 3 or 4 described LED-backlit heat abstractors, it is characterized in that described radiating tube is the flat radiating tube.
6. LED-backlit heat abstractor according to claim 5 is characterized in that, described radiating tube is fixed on the described backboard outer surface by bond plies.
7. LED-backlit heat abstractor according to claim 1 is characterized in that, described lamp bar substrate is fixed on the inner surface of described backboard by bond plies and screw.
8. a liquid crystal display comprises a LED-backlit heat abstractor, it is characterized in that, described LED-backlit heat abstractor comprises a backboard, and the part near the backboard side on the described backboard inner surface is provided with lamp bar substrate; Part near the backboard side on the described lamp bar substrate is provided with at least one LED lamp.
9. liquid crystal display according to claim 8 is characterized in that, described LED-backlit heat abstractor is each described LED-backlit heat abstractor of claim 2-7.
CN201220278722XU 2012-06-13 2012-06-13 LED (Light Emitting Diode) backlight cooling device and liquid crystal display Expired - Fee Related CN202691977U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201220278722XU CN202691977U (en) 2012-06-13 2012-06-13 LED (Light Emitting Diode) backlight cooling device and liquid crystal display

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201220278722XU CN202691977U (en) 2012-06-13 2012-06-13 LED (Light Emitting Diode) backlight cooling device and liquid crystal display

Publications (1)

Publication Number Publication Date
CN202691977U true CN202691977U (en) 2013-01-23

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Application Number Title Priority Date Filing Date
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018196120A1 (en) * 2017-04-28 2018-11-01 深圳市华星光电技术有限公司 Heat dissipation system for liquid crystal television, and liquid crystal television
US10477735B2 (en) 2017-04-28 2019-11-12 Shenzhen China Star Optoelectronics Technology Co., Ltd. Heat dissipation system for use with liquid crystal television and liquid crystal television

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018196120A1 (en) * 2017-04-28 2018-11-01 深圳市华星光电技术有限公司 Heat dissipation system for liquid crystal television, and liquid crystal television
US10477735B2 (en) 2017-04-28 2019-11-12 Shenzhen China Star Optoelectronics Technology Co., Ltd. Heat dissipation system for use with liquid crystal television and liquid crystal television

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130123

Termination date: 20210613

CF01 Termination of patent right due to non-payment of annual fee