CN104834046A - Backlight unit and lighting device - Google Patents
Backlight unit and lighting device Download PDFInfo
- Publication number
- CN104834046A CN104834046A CN201510223178.7A CN201510223178A CN104834046A CN 104834046 A CN104834046 A CN 104834046A CN 201510223178 A CN201510223178 A CN 201510223178A CN 104834046 A CN104834046 A CN 104834046A
- Authority
- CN
- China
- Prior art keywords
- light
- guide plate
- light guide
- light source
- incidence surface
- 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.)
- Pending
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0075—Arrangements of multiple light guides
- G02B6/0076—Stacked arrangements of multiple light guides of the same or different cross-sectional area
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
- G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0075—Arrangements of multiple light guides
- G02B6/0078—Side-by-side arrangements, e.g. for large area displays
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention discloses a backlight unit including a light guide plate assembly and a light source assembly. The light source assembly provides a light source for the light guide plate assembly. The light guide plate assembly comprises a first guide plate and a pair of second light guide plates. The second light guide plates are stacked on the bottom surface of the first light guide plate, and the second guide plates are relatively isolated from each other. The top surface of the first light guide plate is a light exit surface. The first light guide plate comprises a pair of first light incident surfaces disposed apposite to each other. Each second light guide plate comprises a second light incident surfaces. The two second light incident surfaces flush and are coplanar with the first light incident surfaces respectively. The light source assembly comprises a pair of first light sources. The pair of first light sources are disposed at two sides of the first light incident surfaces respectively, and provide light for the first light guide plate and the second light guide plate simultaneously. The backlight unit is capable of improving the utilization rate of the light source. The invention further provides a lighting device.
Description
Technical field
The present invention relates to backlight technology field, particularly relate to a kind of back light unit and light fixture.
Background technology
Along with the development of the back light source technique of lighting technical field, the also develop rapidly of LED illumination technology, the advantage how to improve the utilization factor of LED light source, making light fixture have energy-conserving and environment-protective becomes the Main way of whole industry research.
Summary of the invention
The invention provides a kind of back light unit and light fixture, the utilization factor of LED light source can be improved, make light fixture have the advantage of energy-conserving and environment-protective.
To achieve these goals, embodiment of the present invention provides following technical scheme:
On the one hand, the invention provides a kind of back light unit, comprise light guide plate assembly and light source assembly, described light source assembly provides light source for described light guide plate assembly, described light guide plate assembly comprises the first light guide plate and a pair second light guide plate, described to the stacked bottom surface being arranged on described first light guide plate of the second light guide plate, and be describedly isolated from each other relatively to the second light guide plate, the end face of described first light guide plate is exiting surface, described first light guide plate comprises the first incidence surface of pair of opposing, each described second light guide plate includes second incidence surface, described two the second incidence surfaces flush coplanar with described to the first incidence surface respectively, described light source assembly comprises a pair first light sources, described the described both sides to the first incidence surface are arranged at respectively to the first light source, and described to the first light source simultaneously for described first light guide plate with describedly provide light to the second light guide plate.
Wherein, subregion and described first light guide plate of each described first light source are just right, another part region and described second light guide plate just right, the orthogonal projection of each described first light source on described light guide plate assembly is across described first incidence surface and described second incidence surface.
Wherein, described first light source is LED light source.
Wherein, the area of each described second light guide plate is 1/3rd of described first light guide plate area.
Wherein, described light source assembly also comprises a pair secondary light source, each described second light guide plate includes the 3rd incidence surface, described 3rd incidence surface is located at the relative edge of described second incidence surface respectively, faced by described two the 3rd incidence surfaces are spaced, described to secondary light source respectively near or fit in described two the 3rd incidence surfaces and arrange, to make describedly to be respectively described second light guide plate to secondary light source and to provide light.
Wherein, described to the first light source be describedly connected to different on-off circuits respectively to secondary light source, the brightness of back light unit can be regulated.
On the other hand, the present invention also provides a kind of light fixture, and described light fixture comprises the back light unit described in above-mentioned any one.
Back light unit provided by the invention and light fixture are arranged at the described both sides to the first incidence surface by described respectively to the first light source, and described to the first light source simultaneously for described first light guide plate with describedly provide light to the second light guide plate.The first light source can be made full use of like this, reduce dispersing and exposing of the light that the first light source sends.Each light guide plate of hinge structure will join a light source, and the present invention also can save the use of light source, has the advantage of energy-conserving and environment-protective.
Accompanying drawing explanation
In order to be illustrated more clearly in technical scheme of the present invention, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained as these accompanying drawings.
Fig. 1 is the schematic diagram of the back light unit that one embodiment of the present invention provides.
Embodiment
Below in conjunction with the accompanying drawing in embodiment of the present invention, the technical scheme in embodiment of the present invention is clearly and completely described.
Refer to Fig. 1, the invention provides a kind of back light unit 100, be applied in light fixture or decorative lamp.Described back light unit 100 comprises light guide plate assembly 10 and light source assembly 20, and described light source assembly 20 provides light source for described light guide plate assembly 10.
Described light guide plate assembly 10 comprises the first light guide plate 12 and a pair second light guide plate 14, described to the stacked bottom surface being arranged on described first light guide plate 12 of the second light guide plate 14, and is describedly isolated from each other relatively to the second light guide plate 14.In present embodiment, described to bonded to each other between the second light guide plate 14 and described first light guide plate 12, Figure 1 shows that the schematic diagram the first light guide plate 12, second light guide plate 14 and light source assembly 20 decomposed.The end face of described first light guide plate 12 is exiting surface, described first light guide plate 12 comprises the first incidence surface 122 of pair of opposing, each described second light guide plate 14 includes second incidence surface 142, and described two the second incidence surfaces 142 flush coplanar with described to the first incidence surface 122 respectively.Each described second light guide plate 14 includes the 3rd incidence surface 144, and described 3rd incidence surface 144 is located at the relative edge of described second incidence surface 142 respectively, faced by described two the 3rd incidence surfaces 144 are spaced.
Described light source assembly 20 comprises a pair first light sources 22, is describedly arranged at the described both sides to the first incidence surface 122 respectively to the first light source 22, and described to the first light source 22 simultaneously for described first light guide plate 12 with describedly provide light to the second light guide plate 14.
Specifically, subregion and described first light guide plate 12 of each described first light source 22 are just right, another part region and described second light guide plate 14 just right, each described first orthogonal projection of light source 22 on described light guide plate assembly is across described first incidence surface 122 and described second incidence surface 142.
Described first light source 22 is LED light source, multiple LED can be become the light source module of a bar dress, be arranged on the side of light guide plate assembly 10.
In a kind of embodiment, the area of each described second light guide plate 14 is 1/3rd of described first light guide plate 12 area, the setting of the second light guide plate 14 can improve the brightness of the first light guide plate 12 fringe region, and the first light guide plate 12 zone line is darker light.
Furthermore, described light source assembly 20 also comprises a pair secondary light source 24, described to secondary light source 24 respectively near or fit in described two the 3rd incidence surfaces 144 and arrange, to make describedly to be respectively described second light guide plate 14 to secondary light source 24 and to provide light.
Described to the first light source 22 be describedly connected to different on-off circuits respectively to secondary light source 24, the brightness of back light unit can be regulated, unlatching and the brightness of the first light source 22 and secondary light source 24 can be controlled respectively by the different gears of switch, such as: by the unlatching of the first switch control rule first light source 22, the unlatching of secondary light source 24 is controlled by second switch, when the first light source 22 and secondary light source 24 are all in opening, backlight unit brightness is the strongest.Or controlled the unlatching of the first light source 22 by the first gear of a switch, the second gear controls the unlatching of secondary light source 24.
Back light unit provided by the invention and light fixture are arranged at the described both sides to the first incidence surface 122 by described respectively to the first light source 22, and described to the first light source 22 simultaneously for described first light guide plate 12 with describedly provide light to the second light guide plate 14.The first light source 22 can be made full use of like this, reduce dispersing and revealing of the light that the first light source 22 sends.Each light guide plate of hinge structure will join a light source, and the present invention also can save the use of light source, has the advantage of energy-conserving and environment-protective.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (7)
1. a back light unit, comprise light guide plate assembly and light source assembly, described light source assembly provides light source for described light guide plate assembly, it is characterized in that, described light guide plate assembly comprises the first light guide plate and a pair second light guide plate, described to the stacked bottom surface being arranged on described first light guide plate of the second light guide plate, and be describedly isolated from each other relatively to the second light guide plate, the end face of described first light guide plate is exiting surface, described first light guide plate comprises the first incidence surface of pair of opposing, each described second light guide plate includes second incidence surface, described two the second incidence surfaces flush coplanar with described to the first incidence surface respectively, described light source assembly comprises a pair first light sources, described the described both sides to the first incidence surface are arranged at respectively to the first light source, and described to the first light source simultaneously for described first light guide plate with describedly provide light to the second light guide plate.
2. back light unit as claimed in claim 1, it is characterized in that, subregion and described first light guide plate of each described first light source are just right, another part region and described second light guide plate just right, the orthogonal projection of each described first light source on described light guide plate assembly is across described first incidence surface and described second incidence surface.
3. back light unit as claimed in claim 2, it is characterized in that, described first light source is LED light source.
4. back light unit as claimed in claim 2, it is characterized in that, the area of each described second light guide plate is 1/3rd of described first light guide plate area.
5. back light unit as claimed in claim 2, it is characterized in that, described light source assembly also comprises a pair secondary light source, each described second light guide plate includes the 3rd incidence surface, described 3rd incidence surface is located at the relative edge of described second incidence surface respectively, faced by described two the 3rd incidence surfaces are spaced, described to secondary light source respectively near or fit in described two the 3rd incidence surfaces and arrange, to make describedly to be respectively described second light guide plate to secondary light source and to provide light.
6. back light unit as claimed in claim 5, is characterized in that, described to the first light source be describedly connected to different on-off circuits respectively to secondary light source, and the brightness of back light unit can be regulated.
7. a light fixture, is characterized in that, described light fixture comprises the back light unit as described in claim 1 to 6 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510223178.7A CN104834046A (en) | 2015-05-05 | 2015-05-05 | Backlight unit and lighting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510223178.7A CN104834046A (en) | 2015-05-05 | 2015-05-05 | Backlight unit and lighting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104834046A true CN104834046A (en) | 2015-08-12 |
Family
ID=53812039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510223178.7A Pending CN104834046A (en) | 2015-05-05 | 2015-05-05 | Backlight unit and lighting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104834046A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060059217A (en) * | 2004-11-26 | 2006-06-01 | 엔이씨 엘씨디 테크놀로지스, 엘티디. | Back-lighting unit and liquid crystal display using the same |
| JP2010123295A (en) * | 2008-11-17 | 2010-06-03 | Nanocreate Co Ltd | Lighting unit and lighting device using this unit |
| US20130215646A1 (en) * | 2012-02-22 | 2013-08-22 | Empire Technology Development Llc | Lighting device having a light guide structure |
| CN103712124A (en) * | 2012-10-04 | 2014-04-09 | 三星显示有限公司 | Backlight unit |
-
2015
- 2015-05-05 CN CN201510223178.7A patent/CN104834046A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060059217A (en) * | 2004-11-26 | 2006-06-01 | 엔이씨 엘씨디 테크놀로지스, 엘티디. | Back-lighting unit and liquid crystal display using the same |
| JP2010123295A (en) * | 2008-11-17 | 2010-06-03 | Nanocreate Co Ltd | Lighting unit and lighting device using this unit |
| US20130215646A1 (en) * | 2012-02-22 | 2013-08-22 | Empire Technology Development Llc | Lighting device having a light guide structure |
| CN103712124A (en) * | 2012-10-04 | 2014-04-09 | 三星显示有限公司 | Backlight unit |
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| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150812 |