CN202647367U - Light bar and backlight module - Google Patents
Light bar and backlight module Download PDFInfo
- Publication number
- CN202647367U CN202647367U CN2012203032335U CN201220303233U CN202647367U CN 202647367 U CN202647367 U CN 202647367U CN 2012203032335 U CN2012203032335 U CN 2012203032335U CN 201220303233 U CN201220303233 U CN 201220303233U CN 202647367 U CN202647367 U CN 202647367U
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- light source
- lamp bar
- groups
- light
- diffuser plate
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Abstract
The utility model discloses a light bar. The light bar is used to illuminate a diffusion plate in a bottom lighting backlight module. The light bar is characterized in that the light bar comprises a light bar body and a plurality of unit light sources which are arranged on the light bar body, wherein the plurality of unit light sources form two light source groups, and the two light source groups are arranged slantwise, and thereby luminous surfaces of the two light source groups are enabled to be opposite. And illuminating areas of the two opposite light source groups on the diffusion plate adjacently butt or partially overlap. The utility model further provides the bottom lighting backlight module which comprises the light bar. The light bar can not only ensure the effect that the bottom lighting backlight module evenly sends out light, but also use a backlight with low cost, thereby reducing cost of the bottom lighting backlight module.
Description
Technical field
The utility model relates to dull and stereotyped backlight technology, particularly relates to a kind of lamp bar and a kind of backlight module that comprises this lamp bar.
Background technology
In flat panel display, backlight technology is divided into direct-type backlight and side entrance back, and wherein the light source of direct-type backlight is positioned at incidence surface one side of diffuser plate, and is uniformly distributed on the backboard, the incidence surface of the light vertical irradiation diffuser plate of light source emission.The light source of direct-type backlight is many to be intervally arranged the lamp bar on backboard, to realize the uniform of light with the diffuser plate effect by arranging of lamp bar, guarantees display effect.
Evenly go out preferably light effect in order to reach, light source on the lamp bar be placed with two kinds of forms: the one, it is densely arranged to use the LED lamp of lighting angle less (being generally about 120 degree) to carry out, the 2nd, use the LED lamp of lighting angle large (for example 160 degree are to 170 degree) to carry out sparse arranging.
For the first arrangement form, for fear of shadow occurring, need more LED lamp, yet the briliancy all around of whole picture is not enough; For the second arrangement form, need to realize increasing by secondary lens the lighting angle of LED lamp, higher to technological requirement, research and development design and production difficulty are large.
Therefore all there is the higher problem of cost in two kinds of traditional LED lamp bars.
The utility model content
Based on this, be necessary to provide a kind of lamp bar of cheaply large lighting angle.
In addition, also be necessary to provide a kind of backlight module.
A kind of lamp bar, be used for down straight aphototropism mode set and shine diffuser plate, it is characterized in that, comprise lamp bar main body and many unit light sources of being located on the described lamp bar main body, described many unit light sources form two groups of light source groups, described two groups of light source groups are obliquely installed, so that the light-emitting area of two groups of light source groups is opposing, and described two groups of opposing adjacent docking of the irradiation area of light source group on diffuser plate or overlap.
Therein among embodiment, described two groups of light source component other places in two planes that are the light modulation angle, described lamp bar main body comprise two mutually overlap joint form the loading plates at described light modulation angles, described many unit light sources are uniformly distributed on described two loading plates.
Among embodiment, described loading plate outer ledge also bends and extends to form holder therein.
Among embodiment, described holder is provided with screw therein.
Among embodiment, described light modulation angle is the right angle therein, described unit light source be lighting angle at 110 degree to the led light source between 150 degree.
Therein among embodiment, described two groups of light source groups arrange one by one in pairs being positioned at described two unit light sources that are the plane at light modulation angle.
Among embodiment, described lamp bar main body is that the cross section is polygonal multi-faceted column therein, and described many unit light source distribution are on wherein two cylinders of described multi-faceted column.
A kind of backlight module comprises diffuser plate and a plurality of above-mentioned lamp bar of being located at incidence surface one side of described diffuser plate.
Above-mentioned lamp bar forms the lamp bar with larger lighting angle by the led light source that adopts common little lighting angle, not only can guarantee the uniform effect of bright dipping, also can use cheaply backlight simultaneously, thereby reduce the cost of down straight aphototropism mode set.
Description of drawings
Fig. 1 is the side schematic view of the down straight aphototropism mode set structure of the utility model one embodiment;
Fig. 2 is the perspective view of the lamp bar in the backlight module shown in Figure 1;
Fig. 3 is the schematic diagram that lamp bar shown in Figure 2 is assembled into backboard.
The specific embodiment
As shown in Figure 1, be the side schematic view of the down straight aphototropism mode set structure of the utility model one embodiment.This down straight aphototropism mode set 10 comprises backboard 100, be located at lamp bar 200 on the backboard 100 and incidence surface towards the diffuser plate 300 of lamp bar 200.Lamp bar 200 is luminous to the incidence surface of diffuser plate 300 with larger angle.
Fig. 2 is the perspective view of the utility model lamp bar, and lamp bar 200 comprises the lamp bar main body that is formed by two loading plates, 210 overlap joints and is located at two blocks of unit light sources 230 on the loading plate 210.
Two loading plates 210 of lamp bar main body adopt metallic plate so that heat radiation.Two loading plates 210 can adopt welding, the bending of whole plate or integral forming process to form this V-structure each other at an angle.Angulation is called the light modulation angle between two loading plates 210.
Many unit light sources 230 are evenly distributed on two loading plates 210, form two groups of opposing and symmetrically arranged light source groups 231,232.In the present embodiment, unit light source 230 all is the yi word pattern longitudinal arrangement in light source group 231 and the light source group 232, and the interval is even.Preferably, the unit light source 230 that is positioned on the different bearer plate 210 arranges one by one in pairs, and namely the unit light source 230 corresponding settings in the unit light source 230 in the light source group 231 and the light source group 232 are mapped the irradiation area of lamp bar main body both sides.Unit light source 230 is preferably led light source.
Structure and the arrangement mode of unit light source 230 on loading plate 210 based on above-mentioned lamp bar main body, two groups of light source groups 231,232 on the lamp bar 200 are obliquely installed, so that the light-emitting area of two groups of light source groups is opposing, and make the adjacent docking of the irradiation area of unit light source 230 on diffuser plate 300 on two loading plates 210 or overlap, to avoid the dark space.Like this, the lighting angle of lamp bar 200 integral body is obtained, thereby can relatively easily be obtained larger lighting angle by two groups of opposing light source groups 231,232 splicings.Unit light source 230 by selecting suitable lighting angle, reasonably tilt light direction and the position of adjustment unit light source 230 on loading plate 210, can realize the adjusting of the final lighting angle that forms.In order to reach the purpose of this utility model, adjust this lighting angle and make it greater than 180 degree, behind a plurality of lamp bars 200 of arranging, different lamp bars 200 just can not form the dark space in the overlapping region of diffuser plate 300 irradiations like this.
In addition, because in the unit light source 230 luminous conical surfaces, it is often larger that the front goes out optical density, and the edge to go out optical density less, unit light source 230 is divided into two groups of light source groups 231,232 and be obliquely installed, also can eliminates because over against diffuser plate 300 formed clear zones.Like this, will be more even from the light of diffuser plate 300 outgoing.
Because the led light source as unit light source 230 all is to be flattened on the loading plate 210 usually, the center line of its bright dipping conical surface is perpendicular to loading plate 210 surfaces, so the inclination rising angle of unit light source 230 can be realized by changing above-mentioned light modulation angle.
In a preferred embodiment, the light modulation angle between two loading plates 210 is the right angle, as the lighting angle of the led light source of unit light source 230 at 110 degree between 150 degree.Especially, when the lighting angle of led light source is 120 when spending, the Integral luminous angle of lamp bar 200 can reach 210 degree.
In other embodiments, other angle also can be arranged in the light modulation angle, and better effect also can be adjusted to obtain in the position of unit light source 230 on loading plate 210.
Further, the outer ledge at loading plate 210 also is provided with holder 220.Holder 220 can be extended to form by loading plate 210 bendings, perhaps is welded to the outer ledge of loading plate 210.Holder 220 is provided with screw 221, lamp bar 200 can be fixed on the backboard 100 by screw 221.In other embodiments, holder 220 can also be fixed on the backboard 100 by modes such as buckle, grafting, adhesions.
Be appreciated that, the key that forms this large lighting angle is unit light source 230 is divided into two groups of opposing light source groups 231,232 and be obliquely installed, so that two groups of light source groups 231,232 light-emitting area are opposing, and the adjacent docking of the irradiation area on diffuser plate or overlap.Therefore, the structure of lamp bar 200 is not limited to the structure of above-described embodiment.For example, lamp bar main body can also be that the cross section is polygonal multi-faceted column, and unit light source 230 is arranged on wherein two cylinders of this multiaspect main body.Perhaps lamp bar main body comprises one to one unit rack of a plurality of and unit light source 230, and each unit rack supports unit light source 230 separately and tilts.
Fig. 3 is the schematic diagram that the lamp bar is assembled into backboard.Down straight aphototropism mode set 10 comprises backboard and lamp bar 200 and other necessary assemblies, is not repeated herein.As shown in Figure 3, the lamp bar in the down straight aphototropism mode set 10 200 is that a plurality of and even interval arranges.
Above-mentioned lamp bar 200 with larger lighting angle is formed by the led light source of common little lighting angle, by adopting this kind lamp bar 200, not only can guarantee the uniform effect of bright dipping, also can use cheaply backlight simultaneously, can reduce lamp bar cost.
The above embodiment has only expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim.Should be pointed out that for the person of ordinary skill of the art without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (8)
1. lamp bar, be used for down straight aphototropism mode set and shine diffuser plate, it is characterized in that, comprise lamp bar main body and many unit light sources of being located on the described lamp bar main body, described many unit light sources form two groups of light source groups, described two groups of light source groups are obliquely installed, so that the light-emitting area of two groups of light source groups is opposing, and described two groups of opposing adjacent docking of the irradiation area of light source group on diffuser plate or overlap.
2. lamp bar according to claim 1, it is characterized in that, described two groups of light source component other places in two planes that are the light modulation angle, described lamp bar main body comprise two mutually overlap joint form the loading plates at described light modulation angles, described many unit light sources are uniformly distributed on described two loading plates.
3. lamp bar according to claim 2 is characterized in that, described loading plate outer ledge also bends and extends to form holder.
4. lamp bar according to claim 3 is characterized in that, described holder is provided with screw.
5. lamp bar according to claim 2 is characterized in that, described light modulation angle is the right angle, and described unit light source is the led light source of lighting angle between 110 degree are spent to 150.
6. lamp bar according to claim 2 is characterized in that, described two groups of light source groups are being positioned at described two one by one in pairs settings of unit light sources that are the plane at light modulation angle.
7. lamp bar according to claim 1 is characterized in that, described lamp bar main body is that the cross section is polygonal multi-faceted column, and described many unit light source distribution are on wherein two cylinders of described multi-faceted column.
8. a backlight module comprises a plurality of such as each described lamp bar of claim 1 ~ 7 of diffuser plate and incidence surface one side of being located at described diffuser plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203032335U CN202647367U (en) | 2012-06-26 | 2012-06-26 | Light bar and backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203032335U CN202647367U (en) | 2012-06-26 | 2012-06-26 | Light bar and backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202647367U true CN202647367U (en) | 2013-01-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012203032335U Expired - Fee Related CN202647367U (en) | 2012-06-26 | 2012-06-26 | Light bar and backlight module |
Country Status (1)
| Country | Link |
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| CN (1) | CN202647367U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105258027A (en) * | 2015-10-30 | 2016-01-20 | 北京京东方茶谷电子有限公司 | Backlight module and display device |
| CN108828837A (en) * | 2018-05-31 | 2018-11-16 | 昆山龙腾光电有限公司 | Width view angle switch display device |
| CN112578589A (en) * | 2019-09-27 | 2021-03-30 | 海信视像科技股份有限公司 | Display device and backlight module |
-
2012
- 2012-06-26 CN CN2012203032335U patent/CN202647367U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105258027A (en) * | 2015-10-30 | 2016-01-20 | 北京京东方茶谷电子有限公司 | Backlight module and display device |
| CN105258027B (en) * | 2015-10-30 | 2018-11-27 | 北京京东方茶谷电子有限公司 | Backlight module and display device |
| US10209561B2 (en) | 2015-10-30 | 2019-02-19 | Boe Technology Group Co., Ltd. | Backlight with staggered rows of LEDs |
| CN108828837A (en) * | 2018-05-31 | 2018-11-16 | 昆山龙腾光电有限公司 | Width view angle switch display device |
| CN108828837B (en) * | 2018-05-31 | 2021-08-06 | 昆山龙腾光电股份有限公司 | Wide-narrow viewing angle switching display device |
| CN112578589A (en) * | 2019-09-27 | 2021-03-30 | 海信视像科技股份有限公司 | Display device and backlight module |
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| Date | Code | Title | Description |
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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: 20130102 Termination date: 20170626 |
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| CF01 | Termination of patent right due to non-payment of annual fee |