CN1967347A - Direct lighting backlight module - Google Patents
Direct lighting backlight module Download PDFInfo
- Publication number
- CN1967347A CN1967347A CNA2005101014962A CN200510101496A CN1967347A CN 1967347 A CN1967347 A CN 1967347A CN A2005101014962 A CNA2005101014962 A CN A2005101014962A CN 200510101496 A CN200510101496 A CN 200510101496A CN 1967347 A CN1967347 A CN 1967347A
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- CN
- China
- Prior art keywords
- mode set
- down straight
- aphototropism mode
- straight aphototropism
- housing
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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.)
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- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention discloses a down-backlight module, which includes one shell with a hole, at least one optical film, more than one source and reflector. The shell includes a bottom and multi sides. The shell bottom has a number of diversion holes. At least one optical film is located in the shell hole; a number of sources are arranged to the shell bottom. Reflector is located within the shell and apart from the shell bottom. There is a return region between the reflector and shell bottom. There are a number of light sources in the return region, and the reflector has a number of through-holes correspond to the light sources. The number of light sources passing light through the through-hole. The invention down-backlight module cools fast, is of low-cost and convenient assembly.
Description
[technical field]
The invention relates to a kind of module backlight, particularly about a kind of down straight aphototropism mode set.
[background technology]
In recent years, LCD is because characteristics such as its light, thin, little and power consumption is low have obtained widespread use.Because liquid crystal itself does not possess the characteristics of luminescence, therefore need module backlight to provide backlight for it, realize the Presentation Function of liquid crystal.
Module backlight is divided into two kinds of side-light type and straight-down negatives.For the LCD of small-medium size, advantage such as side-light type module backlight has gently, thin and power consumption is low.Yet,, the demand of large scale liquid crystal display is increased day by day, and side-light type module backlight is difficult to satisfy the brightness requirement of large scale liquid crystal display, thereby down straight aphototropism mode set develops rapidly along with development of science and technology.General down straight aphototropism mode set is normal to adopt a plurality of light emitting diode matrixs as its backlight, because light emitting diode can produce heat in luminescence process, influence the homogeneity and the brightness of light beam that light emitting diode provides, thereby module backlight need be provided with cooling mechanism, reduce temperature inside.
See also Fig. 5, it is the down straight aphototropism mode set of prior art.This down straight aphototropism mode set comprises a housing 71, a heat radiator 72, a plurality of light emitting diode 73, a reflection cavity 74, a diffusion sheet 75, a light-collecting piece 76 and a blast sheet 77.Heat radiator 72 is arranged at the bottom of housing 71, reflection cavity 74 is located on the heat radiator 72 and with this heat radiator 72 and is closely linked to each other, this reflection cavity 74 is provided with a plurality of through holes 741, and light emitting diode 73 is located in this reflection cavity 74, and passes these a plurality of through holes 741 and link to each other with heat radiator 72.Diffusion sheet 75, light-collecting piece 76 and blast sheet 77 are located at the top of light emitting diode 73 in regular turn.Heat radiator 72 is made by the higher material of coefficient of heat conductivity, which is provided with a plurality of radiating fins 721.
The heat radiator 72 of above-mentioned down straight aphototropism mode set only contacts with light emitting diode 73 bottoms, promptly only the heat of light emitting diode 73 bottoms can be derived rapidly, and only rely on the air transmitted of radiation or inner sealing to heat radiator 72 for the heat of its high thermoluminescence portion, radiating effect is not good, and often need radiator fan be set externally and cooperate heat radiation, make that this down straight aphototropism mode set thickness is bigger, and assembling process complexity, thereby cost is higher, in addition, also there are problems such as noise in the setting of radiator fan.
[summary of the invention]
In view of above-mentioned condition, be necessary to provide a kind of easy to assembly, thickness is little, but and the down straight aphototropism mode set of efficiently radiates heat.
A kind of down straight aphototropism mode set, it comprises: one has the housing of an opening, at least one optical sheet, a plurality of light sources and a reflecting plate, this housing comprises a bottom surface and a plurality of side, this housing bottom surface is provided with a plurality of pod apertures, at least one optical sheet is located at this shell nozzle place, a plurality of light sources are arranged on this housing bottom surface, reflecting plate is positioned at this housing and is provided with at interval with this housing bottom surface, form a recirculating zone between this reflecting plate and the housing bottom surface, a plurality of light sources are positioned at this recirculating zone, and this reflecting plate is provided with a plurality of through holes with this a plurality of light sources corresponding section, and it is luminous that a plurality of light sources pass these a plurality of through holes.
Compared to prior art, the reflecting plate of this down straight aphototropism mode set and housing bottom surface are provided with at interval, and the housing bottom surface is provided with a plurality of pod apertures, and outside air enters module backlight by this pod apertures, and forms gas backstreaming between reflecting plate and housing bottom surface, thereby the heat of module internal backlight is taken away, good heat dissipation effect, and radiating subassemblies such as radiator fan need be set, so the down straight aphototropism mode set thickness of the technical program is less, cost is lower, and easy to assembly.
[description of drawings]
Fig. 1 is the down straight aphototropism mode set exploded view of preferred embodiment of the present invention.
Fig. 2 is the down straight aphototropism mode set stereographic map of preferred embodiment of the present invention.
Fig. 3 is the sectional stereogram of Fig. 2 along the III-III line.
Fig. 4 is the down straight aphototropism mode set light source layout viewing of preferred embodiment of the present invention.
Fig. 5 is the down straight aphototropism mode set synoptic diagram of prior art.
[embodiment]
See also Fig. 1, the down straight aphototropism mode set 10 of preferred embodiment of the present invention comprises: a housing 11, a plurality of light emitting diode 12, an optical sheet 14 and a reflecting plate 13.
Please consult Fig. 2 and Fig. 3 simultaneously, this housing 11 is for having the housing of an opening 113, and it comprises a bottom surface 111 and a plurality of sides 112, is arranged at intervals with a plurality of pod apertures 1111 and a plurality of screws 1112 on this bottom surface 111.In the present embodiment, the bottom surface 111 and the one of housing 11 are one of the forming to side 112, this bottom surface 111 is provided with a plurality of heat radiator 115 with the outside of side 112, and these a plurality of heat radiator 115 are the higher material of coefficient of heat conductivity with housing bottom surface 111 and side 112, as aluminium or copper.
Please consult Fig. 4 simultaneously, these a plurality of light emitting diode 12 matrixes are arranged in corresponding a plurality of screws 1112 places on the housing bottom surface 111, and are fixed on the housing bottom surface 111 by these a plurality of screws 1112 and screw (figure does not show).
This optical sheet 14 is arranged at shell nozzle 113 places, and it generally comprises a diffusion sheet 141, a light-collecting piece 142 and a blast sheet 143, and this diffusion sheet 141, light-collecting piece 142 and blast sheet 143 are located at shell nozzle 113 places in regular turn.
This reflecting plate 13 is positioned at housing 11 and is provided with at interval with housing bottom surface 111, and corresponding a plurality of light emitting diodes 12 places are provided with a plurality of through holes 131 on this reflecting plate 13, and it is luminous that a plurality of light emitting diodes 12 pass this a plurality of through hole 131 respectively.This reflecting plate 13 is divided into two zones with housing 11 inside, be the gas backstreaming district between reflecting plate 13 and the housing bottom surface 111, a plurality of light emitting diodes 12 are positioned at this gas backstreaming district, extraneous air enters this down straight aphototropism mode set 10 inner formation gas backstreamings by pod apertures 1111, thereby the heat that light emitting diode 12 sends is taken away.Be light guide zone between reflecting plate 13 and the optical sheet 14, this reflecting plate 13 can prevent effectively that the air that has dust from entering light guide zone, thereby improves the bright dipping quality.In the present embodiment, reflecting plate 13 further comprises a plurality of lateral reflection plates 132, and these a plurality of lateral reflection plates 132 are connected with the edge of reflecting plate 13 and contact with housing side 112.
During assembling, earlier housing side 112 is connected on the housing bottom surface 111, this connection can connect for bolt, again light emitting diode 12 is fixed on the housing bottom surface 111, then reflecting plate 13 and lateral reflection plate 132 are fixed in the housing 11, make light emitting diode 12 pass through hole 131 on the reflecting plate 13, at last diffusion sheet 141, light-collecting piece 142 and blast sheet 143 are fixed in shell nozzle 113 places in regular turn.
Down straight aphototropism mode set 10 of the present invention also comprises a fixed frame (figure does not show), a storing framework (figure does not show) and a upper ledge 114, this fixed frame is positioned at housing 11 inside, be used for fixing reflecting plate 13, this storing framework (figure does not show) is positioned at shell nozzle 113 places with upper ledge 114, is used for fixing diffusion sheet 141, light-collecting piece 142 and blast sheet 143.
Be understandable that the bottom surface 111 and the heat radiator 115 of down straight aphototropism mode set 10 of the present invention also can be other material, the engineering plastics higher as coefficient of heat conductivity; Light source also can be cold cathode ray tube, only the through hole 131 of corresponding light source on the reflecting plate 13 need be processed as flute profile and get final product; In addition, down straight aphototropism mode set 10 of the present invention also can not comprise light-collecting piece 142 and blast sheet 143.
Claims (12)
1. down straight aphototropism mode set, it comprises that one has the housing of an opening, at least one optical sheet and a plurality of light source, this housing has a bottom surface and a plurality of side, this at least one optical sheet is located at the shell nozzle place, these a plurality of light sources are arranged on the housing bottom surface, it is characterized in that: this down straight aphototropism mode set also comprises a reflecting plate that is positioned at this housing and is provided with at interval with this housing bottom surface, this housing bottom surface is provided with a plurality of pod apertures, form a recirculating zone between this reflecting plate and the housing bottom surface, a plurality of light sources are positioned at this recirculating zone, and this reflecting plate is provided with a plurality of through holes with this a plurality of light sources corresponding section, and it is luminous that a plurality of light sources pass these a plurality of through holes.
2. down straight aphototropism mode set as claimed in claim 1 is characterized in that: the outside of described housing bottom surface is provided with a plurality of heat radiator.
3. down straight aphototropism mode set as claimed in claim 1 is characterized in that: described housing bottom surface is the higher material of coefficient of heat conductivity.
4. down straight aphototropism mode set as claimed in claim 1 is characterized in that: the outside of at least one side of described housing is provided with a plurality of heat radiator.
5. down straight aphototropism mode set as claimed in claim 1 is characterized in that: described optical sheet is a diffusion sheet.
6. down straight aphototropism mode set as claimed in claim 5 is characterized in that: described optical sheet also comprises a light-collecting piece, and it is positioned at the diffusion sheet top.
7. down straight aphototropism mode set as claimed in claim 6 is characterized in that: described optical sheet also comprises a blast sheet, and it is positioned at the light-collecting piece top.
8. down straight aphototropism mode set as claimed in claim 1 is characterized in that: described a plurality of light sources are light emitting diode.
9. down straight aphototropism mode set as claimed in claim 8 is characterized in that: described a plurality of dot matrix LEDss are arranged on the housing bottom surface.
10. down straight aphototropism mode set as claimed in claim 1 is characterized in that: described reflecting plate further comprises a plurality of lateral reflection plates, and these a plurality of lateral reflection plates are connected with this reflecting plate edge and contact with the housing side.
11. down straight aphototropism mode set as claimed in claim 1 is characterized in that: described down straight aphototropism mode set also comprises a fixed frame, and it is positioned at housing, is used for fixing reflecting plate.
12. down straight aphototropism mode set as claimed in claim 1 is characterized in that: described down straight aphototropism mode set comprises that also one puts framework, and it is positioned at the shell nozzle place, is used for fixing optical sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101014962A CN100462809C (en) | 2005-11-17 | 2005-11-17 | Direct lighting backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101014962A CN100462809C (en) | 2005-11-17 | 2005-11-17 | Direct lighting backlight module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1967347A true CN1967347A (en) | 2007-05-23 |
| CN100462809C CN100462809C (en) | 2009-02-18 |
Family
ID=38076188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101014962A Expired - Fee Related CN100462809C (en) | 2005-11-17 | 2005-11-17 | Direct lighting backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100462809C (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100591978C (en) * | 2008-12-01 | 2010-02-24 | 友达光电股份有限公司 | Backlight module structure and display device thereof |
| CN101994998A (en) * | 2009-07-31 | 2011-03-30 | Skc哈斯显示器薄膜有限公司 | Optical coupling device for light guiding film |
| US8047682B2 (en) | 2008-04-28 | 2011-11-01 | Fu Zhun Precision Industry (Shen Zhen) Co., Ltd. | LED street lamp assembly |
| CN101498409B (en) * | 2007-09-29 | 2012-04-04 | 京东方科技集团股份有限公司 | Backlight device |
| CN101487942B (en) * | 2008-01-15 | 2012-05-23 | 奇美电子股份有限公司 | Backlight module and display device thereof |
| CN104791671A (en) * | 2015-05-08 | 2015-07-22 | 京东方科技集团股份有限公司 | Backlight source, testing system and method and display device |
| CN105137647A (en) * | 2015-09-29 | 2015-12-09 | 中航华东光电有限公司 | Military liquid crystal display module |
| CN105135243A (en) * | 2015-08-10 | 2015-12-09 | 固态照明张家口有限公司 | LED flat lamp |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001215499A (en) * | 2000-01-31 | 2001-08-10 | Oki Electric Ind Co Ltd | Liquid crystal display device |
| TW542883B (en) * | 2002-08-16 | 2003-07-21 | Au Optronics Corp | Backlight unit for flat panel liquid crystal display |
| TWI252348B (en) * | 2002-10-21 | 2006-04-01 | Toppoly Optoelectronics Corp | Back light module |
| CN100485478C (en) * | 2004-01-05 | 2009-05-06 | 鸿富锦精密工业（深圳）有限公司 | Straight-down backlight module |
-
2005
- 2005-11-17 CN CNB2005101014962A patent/CN100462809C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101498409B (en) * | 2007-09-29 | 2012-04-04 | 京东方科技集团股份有限公司 | Backlight device |
| CN101487942B (en) * | 2008-01-15 | 2012-05-23 | 奇美电子股份有限公司 | Backlight module and display device thereof |
| US8047682B2 (en) | 2008-04-28 | 2011-11-01 | Fu Zhun Precision Industry (Shen Zhen) Co., Ltd. | LED street lamp assembly |
| CN101571276B (en) * | 2008-04-28 | 2012-03-21 | 富准精密工业(深圳)有限公司 | Light-emitting diode illuminating device |
| CN100591978C (en) * | 2008-12-01 | 2010-02-24 | 友达光电股份有限公司 | Backlight module structure and display device thereof |
| CN101994998A (en) * | 2009-07-31 | 2011-03-30 | Skc哈斯显示器薄膜有限公司 | Optical coupling device for light guiding film |
| CN104791671A (en) * | 2015-05-08 | 2015-07-22 | 京东方科技集团股份有限公司 | Backlight source, testing system and method and display device |
| CN105135243A (en) * | 2015-08-10 | 2015-12-09 | 固态照明张家口有限公司 | LED flat lamp |
| CN105135243B (en) * | 2015-08-10 | 2017-12-22 | 矽照光电（厦门）有限公司 | A kind of LED planar lamp |
| CN105137647A (en) * | 2015-09-29 | 2015-12-09 | 中航华东光电有限公司 | Military liquid crystal display module |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100462809C (en) | 2009-02-18 |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090218 Termination date: 20151117 |