CN104763923A - Movable LED backlight device - Google Patents
Movable LED backlight device Download PDFInfo
- Publication number
- CN104763923A CN104763923A CN201510097505.9A CN201510097505A CN104763923A CN 104763923 A CN104763923 A CN 104763923A CN 201510097505 A CN201510097505 A CN 201510097505A CN 104763923 A CN104763923 A CN 104763923A
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- CN
- China
- Prior art keywords
- conveyer belt
- led
- bull stick
- lamp bar
- lighting device
- 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.)
- Granted
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133608—Direct backlight including particular frames or supporting means
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133603—Direct backlight with LEDs
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
Abstract
The invention relates to a movable LED backlight device and used for providing backlight for a display screen. The movable LED backlight device comprises a motor, a rotating rod connected with the rotor of the motor, at least two annular conveyor belts parallel to each other and driven by the rotating rod to rotate, and at least one LED light bar bridged over the at least two annular conveyor belts; each LED light bar is provided with two opposite light exiting surfaces. The movable LED backlight device overcomes the problem of uneven light source of a large-area liquid crystal panel; compared with a down form, the number of LEDs is greatly reduced, the cost is reduced, and the electric energy consumption and the heating amount are reduced; compared with a side light form, a light guide plate is omitted so that the light source can be distributed more uniformly and the backlight of the large-area panel is effectively increased.
Description
Technical field
The present invention relates to a kind of back lighting device, particularly a kind of mobile LED back lighting device.
Background technology
Current LED backlight technology is widely used in field of liquid crystal display, and the light source type of current LED backlight mainly contains two kinds of forms: straight-down negative, side-light type; There are respective pluses and minuses in these two kinds of modes.
Straight-down negative advantage is not need light guide plate, and when light source is thick, light source uniformity is better, but its LED quantity needed is many, and power consumption is many, and invalid heat is many, and when light source is thinner, light source uniformity is poor.When wide-angle edge-emitting LED because its middle light intensity is on the low side, easily cause blackening, affect the uniformity of backlight.
In addition, side-light type advantage is at required LED negligible amounts, and more energy-conservation, heat is little, and during small size, cost performance is high.But it needs light guide plate, and use limited for large area panel light source briliancy, cause light to be dispersed on whole light-guiding plane uniformly.
Have above-mentioned known, two kinds of form of light source in the market show all comparatively not good in large area panel situation, in order to reduce the light source effect of balance cost and raising large area panel, must propose a kind of new back lighting device.
Summary of the invention
The object of the invention is the defect in order to overcome above-mentioned background technology, mobile LED back lighting device is provided.
A kind of mobile LED back lighting device, for providing backlight for display screen, comprise: motor, the bull stick be connected with the rotor of described motor, driven pivotal at least two endless conveyor belts be parallel to each other by described bull stick and at least one LED lamp bar at least two conveyer belts described in being connected across, each LED lamp bar has two opposing exiting surfaces.
Further, described bull stick drives the revolution of conveyer belt by linkage structure, and described linkage is the gear being arranged on described bull stick head and the tail two ends place and the teeth be arranged on inside described conveyer belt, and described bull stick afterbody is connected with motor rotor.
Further, described LED lamp bar is arranged on outside described conveyer belt by screw, it has some through holes for inlaying LED group, and described LED lamp bar is provided with the conducting wire into described LED group conduction.
Further, described LED group is embedded in the through hole of described LED lamp bar, in hollow box-like structure, and inner side all posts reflective membrane, and be provided with a minimum LED, with described LED place one side to opposite, bossed reflective surface is set, have loophole with the adjacent surface of described LED place one side, have loophole facing to display screen dorsad.
Further, described loophole is strip.
Further, described conveyer belt is conductive material, comprises the first conveyer belt be connected with described bull stick head end place and the second conveyer belt be connected with described bull stick tail end place, and described first conveyer belt connects positive source, and described second conveyer belt connects power cathode; Screw set by described LED lamp bar two ends is power connector end, fixes backward described conveyer belt obtain electric energy by described screw.
Further, also comprise the housing for receiving and fix described bull stick, conveyer belt and LED lamp bar, described housing is also provided with and makes described upper driving band and fully extended first fixed axis of the second conveyer belt and the second fixed axis, described first fixed axis is connected positive source and power cathode respectively with the axle center of the second fixed axis.
The problem that the light source that mobile LED back lighting device of the present invention overcomes large-area liquid crystal panel is uneven, relative to straight-down negative, drastically reduce the area LED quantity, reduces cost, and decrease power consumption, and reduce caloric value; Relative to side-light type, eliminate light guide plate, light source is uniformly distributed more, effectively add the backlight of large area panel.
Accompanying drawing explanation
Fig. 1 is the structure chart in one embodiment of the invention.
Fig. 2 is conveyer belt in one embodiment of the invention and LED lamp bar connection layout.
Fig. 3 is fixed axis in one embodiment of the invention and LED lamp bar connection layout.
Fig. 4 is the LED lamp strip structure figure in one embodiment of the invention.
Fig. 5 is the LED group cut-away view in one embodiment of the invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, a kind of mobile LED back lighting device of the present invention is further described.
A kind of mobile LED back lighting device, for providing backlight for display screen, as shown in Figure 1, comprise: motor 1, the bull stick 2 be connected with the rotor of described motor 1, driven pivotal conveyer belt 3 by bull stick 2 by linkage structure, be arranged at least one LED lamp bar 4 on described conveyer belt 3, and for receiving and fix the shell 6 of above-mentioned parts, described LED lamp bar 4 has two relative exiting surfaces.
Concrete, as shown in Figure 2, motor 1 is high-speed brushless motor, noise is reduced while ensureing rotating speed, the afterbody of bull stick 2 is then directly fixedly connected with the rotor of motor 1 or is linked by gear structure and motor, and when motor 1 rotor turns, bull stick 2 rotates thereupon, conveyer belt 3 is for driving LED lamp bar 4 high-speed mobile, and it is a soft endless belt.Linkage is then for being arranged on the gear 51 at bull stick 2 head and the tail two ends place and the teeth 52 that are arranged on inside described conveyer belt 3.Gear 51 and bull stick 2 design for integral type or are fixedly connected with, and teeth 52 are uniformly arranged and fixed inside conveyer belt 3, and when bull stick 2 rotates, tooth 51 drives teeth 52, realize the high speed revolution of conveyer belt 3.
Further, as shown in figures 1 and 3.In conveyer belt 3, conveyer belt 3 is made for conductive material, comprise the first conveyer belt 31 be connected with bull stick 2 head end place and the second conveyer belt 32 be connected with described bull stick 2 tail end place, under preferable case, conveyer belt 3 some press close to display screen, and it is parallel with display screen, to provide enough backlights, display screen behind conveyer belt 3 therefore housing are also provided with and make the first conveyer belt 31 and fully extended first fixed axis 22 and the second fixed axis 23 of the second conveyer belt 3, itself and bull stick 2 cooperatively interact and make the first conveyer belt 31 and the second conveyer belt 32 in flat ring shape.Bull stick 2 is isolation material, and the first fixed axis 22 and the axle center of the second fixed axis 23 are connected positive source and power cathode respectively, thus realizes the first conveyer belt 31 and connect positive source, and the second conveyer belt 32 connects power cathode, for LED lamp bar 4 provides electric energy.
LED lamp bar 4 is arranged on outside conveyer belt 3 by screw, and it has some through holes 42 for inlaying LED group 41, the number of openings opened and the size of display screen adapt, and display screen is larger, through hole 42 quantity opened the more, as shown in Figure 4.Screw 43 set by LED lamp bar 4 two ends is power connector end, the first conveyer belt 31 and the second conveyer belt 32 is connected respectively by screw, due to screw conduction after fixing, and LED lamp bar 4 is provided with the conducting wire into LED group 41 conduction, makes LED lamp bar 4 realize electrical connection.And LED group 41 is embedded in the through hole of described LED lamp bar, in the present embodiment, as shown in Figure 5, LED group 41 is in hollow rectangular box-like structure, and its inner side all posts reflective membrane, improves light reflectance.The inner side of LED group 41 is provided with at least one LED 411, with LED 411 place one side bossed reflective surface 412 is set to opposite, two faces adjacent with LED 411 place one side have loophole 413, loophole 413 towards or display screen dorsad, two relative faces have loophole 413 and make LED lamp bar 4 all can provide backlight for display screen in the position of any non-corner.In preferred embodiment, loophole 413 in strip, in order to printing opacity better, in other embodiments can by completely unlimited for loophole 413 place one side.
When mobile LED back lighting device energising work of the present invention, the first conveyer belt and the energising of the second conveyer belt, LED lamp bar 4 is lit.High-speed motor starts to rotate, and drives conveyer belt revolution, and fixing LED lamp bar 4 high-speed motion thereupon on a moving belt, can produce uniform backlight when speed acquires a certain degree.
In other embodiments, the size according to display screen can arrange many LED lamp bar 4, provides enough backlights.
By reference to the accompanying drawings embodiments of the present invention are explained in detail above, but the present invention is not limited to above-mentioned embodiment, in the ken that those of ordinary skill in the art possess, various change can also be made under the prerequisite not departing from present inventive concept.
Claims (7)
1. a mobile LED back lighting device, for providing backlight for display screen, it is characterized in that, comprise: motor, the bull stick be connected with the rotor of described motor, driven pivotal at least two endless conveyor belts be parallel to each other by described bull stick and at least one LED lamp bar at least two conveyer belts described in being connected across, each LED lamp bar has two opposing exiting surfaces.
2. mobile LED back lighting device as claimed in claim 1, it is characterized in that: described bull stick drives the revolution of conveyer belt by linkage structure, described linkage is the gear being arranged on described bull stick head and the tail two ends place and the teeth be arranged on inside described conveyer belt, and described bull stick afterbody is connected with motor rotor.
3. mobile LED back lighting device as claimed in claim 1, it is characterized in that: described LED lamp bar is arranged on outside described conveyer belt by screw, it has some through holes for inlaying LED group, described LED lamp bar is provided with the conducting wire into described LED group conduction.
4. mobile LED back lighting device as claimed in claim 3, it is characterized in that: described LED group is embedded in the through hole of described LED lamp bar, in hollow box-like structure, and inner side all posts reflective membrane, and be provided with a minimum LED, with described LED place one side to opposite, bossed reflective surface is set, have loophole with the adjacent surface of described LED place one side, have loophole facing to display screen dorsad.
5. mobile LED back lighting device as claimed in claim 4, is characterized in that: described loophole is strip.
6. mobile LED back lighting device as claimed in claim 3, it is characterized in that: described conveyer belt is conductive material, comprise the first conveyer belt be connected with described bull stick head end place and the second conveyer belt be connected with described bull stick tail end place, described first conveyer belt connects positive source, and described second conveyer belt connects power cathode; Screw set by described LED lamp bar two ends is power connector end, fixes backward described conveyer belt obtain electric energy by described screw.
7. mobile LED back lighting device as claimed in claim 5, it is characterized in that: also comprise the housing for receiving and fix described bull stick, conveyer belt and LED lamp bar, described housing is also provided with and makes described upper driving band and fully extended first fixed axis of the second conveyer belt and the second fixed axis, described first fixed axis is connected positive source and power cathode respectively with the axle center of the second fixed axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510097505.9A CN104763923B (en) | 2015-03-05 | 2015-03-05 | A kind of mobile LED back lighting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510097505.9A CN104763923B (en) | 2015-03-05 | 2015-03-05 | A kind of mobile LED back lighting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104763923A true CN104763923A (en) | 2015-07-08 |
| CN104763923B CN104763923B (en) | 2017-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510097505.9A Expired - Fee Related CN104763923B (en) | 2015-03-05 | 2015-03-05 | A kind of mobile LED back lighting device |
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| CN (1) | CN104763923B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105845088A (en) * | 2016-03-17 | 2016-08-10 | 乐视致新电子科技（天津）有限公司 | Backlight driving device and display equipment |
| CN105869578A (en) * | 2015-12-24 | 2016-08-17 | 乐视致新电子科技（天津）有限公司 | Backlight source driving device, backlight source driving device group and display terminal |
| CN107946223A (en) * | 2017-11-20 | 2018-04-20 | 江门市隆信照明电器有限公司 | A kind of conduction mechanism for the encapsulated processing of LED light strip |
| CN108945191A (en) * | 2018-07-21 | 2018-12-07 | 杨林 | Turn to and revolve mode L ED lamp of riding bicycle |
| CN109358433A (en) * | 2018-12-12 | 2019-02-19 | 刘建朝 | A kind of dynamic virtual 3D holographic display screen |
| CN109785802A (en) * | 2018-12-29 | 2019-05-21 | 深圳Tcl新技术有限公司 | Display screen and its control method, terminal |
| CN111862854A (en) * | 2020-08-22 | 2020-10-30 | 深圳市赛时达光电科技有限公司 | Spliced LED lamp backlight module |
| US11003023B2 (en) * | 2018-05-09 | 2021-05-11 | Huizhou China Star Optoelectronics Technology Co., Ltd. | Dynamic light-mixing method of backlight module |
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| CN1495482A (en) * | 2002-08-05 | 2004-05-12 | ��������ʾ���Ƽ���˾ | Back light assembly structure for liquid crystal display |
| CN1621907A (en) * | 2003-11-29 | 2005-06-01 | 鸿富锦精密工业（深圳）有限公司 | Backlight module |
| CN1867852A (en) * | 2003-10-15 | 2006-11-22 | 宋太善 | Two dimensional optical scanning apparatus and image display apparatus using the same |
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| US20090153778A1 (en) * | 2007-12-13 | 2009-06-18 | Seiko Epson Corporation | Lighting device, liquid crystal display device, and electronic apparatus |
| CN103377596A (en) * | 2012-04-20 | 2013-10-30 | 海洋王（东莞）照明科技有限公司 | Marker lamp |
| CN104329631A (en) * | 2014-11-18 | 2015-02-04 | 池州易创电子科技有限公司 | Mobile backlight device |
| CN204534297U (en) * | 2015-03-05 | 2015-08-05 | 惠州市德赛视听科技有限公司 | A kind of mobile LED back lighting device |
-
2015
- 2015-03-05 CN CN201510097505.9A patent/CN104763923B/en not_active Expired - Fee Related
Patent Citations (10)
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| GB2280059A (en) * | 1993-07-14 | 1995-01-18 | Scitex Corp Ltd | Display |
| EP0887783A2 (en) * | 1997-06-26 | 1998-12-30 | Light Spin Ltd. | Moving display |
| CN1495482A (en) * | 2002-08-05 | 2004-05-12 | ��������ʾ���Ƽ���˾ | Back light assembly structure for liquid crystal display |
| CN1867852A (en) * | 2003-10-15 | 2006-11-22 | 宋太善 | Two dimensional optical scanning apparatus and image display apparatus using the same |
| CN1621907A (en) * | 2003-11-29 | 2005-06-01 | 鸿富锦精密工业（深圳）有限公司 | Backlight module |
| CN1894624A (en) * | 2003-12-24 | 2007-01-10 | 松下电器产业株式会社 | 2-dimensional image display device |
| US20090153778A1 (en) * | 2007-12-13 | 2009-06-18 | Seiko Epson Corporation | Lighting device, liquid crystal display device, and electronic apparatus |
| CN103377596A (en) * | 2012-04-20 | 2013-10-30 | 海洋王（东莞）照明科技有限公司 | Marker lamp |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105869578A (en) * | 2015-12-24 | 2016-08-17 | 乐视致新电子科技（天津）有限公司 | Backlight source driving device, backlight source driving device group and display terminal |
| CN105845088A (en) * | 2016-03-17 | 2016-08-10 | 乐视致新电子科技（天津）有限公司 | Backlight driving device and display equipment |
| CN107946223A (en) * | 2017-11-20 | 2018-04-20 | 江门市隆信照明电器有限公司 | A kind of conduction mechanism for the encapsulated processing of LED light strip |
| US11003023B2 (en) * | 2018-05-09 | 2021-05-11 | Huizhou China Star Optoelectronics Technology Co., Ltd. | Dynamic light-mixing method of backlight module |
| CN108945191A (en) * | 2018-07-21 | 2018-12-07 | 杨林 | Turn to and revolve mode L ED lamp of riding bicycle |
| CN108945191B (en) * | 2018-07-21 | 2020-06-23 | 杨林 | Turn to and turn to formula LED lamp by bike soon |
| CN109358433A (en) * | 2018-12-12 | 2019-02-19 | 刘建朝 | A kind of dynamic virtual 3D holographic display screen |
| CN109785802A (en) * | 2018-12-29 | 2019-05-21 | 深圳Tcl新技术有限公司 | Display screen and its control method, terminal |
| CN111862854A (en) * | 2020-08-22 | 2020-10-30 | 深圳市赛时达光电科技有限公司 | Spliced LED lamp backlight module |
| CN111862854B (en) * | 2020-08-22 | 2022-06-14 | 深圳赛时达科技有限公司 | Spliced LED lamp backlight module |
Also Published As
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|---|---|
| CN104763923B (en) | 2017-12-29 |
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Effective date of registration: 20171129 Address after: 516029 Guangdong city of Huizhou province Chen Jiang Zhen Zhong Kai road DESAY third industrial zone Applicant after: DESAY ELECTRONICS (HUIZHOU) CO., LTD. Address before: 516006 Guangdong city of Huizhou province Chen Zhongkai Zhongkai road DESAY third industrial zone Applicant before: Desai Video-Audio Science & Technology Co., Ltd., Huizhou City |
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