CN205716749U - A kind of backlight - Google Patents
A kind of backlight Download PDFInfo
- Publication number
- CN205716749U CN205716749U CN201620681660.5U CN201620681660U CN205716749U CN 205716749 U CN205716749 U CN 205716749U CN 201620681660 U CN201620681660 U CN 201620681660U CN 205716749 U CN205716749 U CN 205716749U
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- CN
- China
- Prior art keywords
- backlight
- wiring board
- astigmat
- luminescent device
- light
- 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.)
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- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Planar Illumination Modules (AREA)
Abstract
The utility model discloses a kind of backlight, including framework and the wiring board that is arranged on described framework bottom surface, the side in described wiring board frame oriented is provided with some luminescent devices, and the light-emitting area of each luminescent device is provided with an astigmat.This back light source structure advantages of simple, luminescent device is arranged on the bottom of backlight, and light penetrates from the bottom up, substantially increases the brightness of backlight, uses astigmat to be reflected by the light of luminescent device and scatters, and makes light distribution more uniform.
Description
Technical field
This utility model relates to field of backlights, particularly relates to a kind of backlight.
Background technology
Vehicle-mounted HUD product backlighting requirements brightness is high, and brightness range is from several ten thousand to hundreds of thousands, far beyond current TFT
Color screen backlight thousand of to about 10,000 scope, conventional side entering-type LED backlight source lamp bar is little, and luminance shortage is bright in order to promote
Degree, the LED in backlight is large number of, and amount of localized heat is assembled serious, and the heat that highlighted LED produces is difficult to effectively distribute, and impact is produced
Product reliability and life-span.Therefore, production firm is badly in need of changing backlight design structure, accomplishes highlighting backlight and has high-cooling property
Energy.
Utility model content
In order to solve above-mentioned the deficiencies in the prior art, this utility model provides a kind of backlight, and this back light source structure is simple
Rationally, luminescent device is arranged on the bottom of backlight, and light penetrates from the bottom up, substantially increases the brightness of backlight, uses
The light of luminescent device is reflected and scatters by astigmat, makes light distribution more uniform.
Technical problem to be solved in the utility model is achieved by the following technical programs:
A kind of backlight, including framework and the wiring board that is arranged on described framework bottom surface, described wiring board frame oriented
Interior side is provided with some luminescent devices, and the light-emitting area of each luminescent device is provided with an astigmat.
Further, the exiting surface indent of described astigmat.
Further, the incidence surface of described astigmat is protruding with supporting construction to described wiring board.
Further, the exiting surface of described astigmat has astigmatic microstructures.
Further, the material of described astigmat is plastics or glass.
Further, described wiring board is provided with heat sink away from the side of luminescent device.
Further, described heat sink is metallic plate.
Further, described heat sink is aluminium base.
Further, described framework is additionally provided with light guide plate or blooming or blooming away from the side of wiring board
Group or diffuser plate.
Further, described framework is additionally provided with brake sack away from the side of wiring board.
This utility model has the advantages that this back light source structure advantages of simple, and luminescent device is arranged on backlight
Bottom, light penetrates from the bottom up, substantially increases the brightness of backlight；Astigmat is used to be rolled over by the light of luminescent device
Penetrate and scatter, make light distribution more uniform；Circuit back is provided with heat sink and can accelerate the heat radiation of wiring board, it is to avoid send out
The heat of optical device is assembled, and causes backlight hydraulic performance decline.
Accompanying drawing explanation
The Facad structure figure of the backlight that Fig. 1 provides for this utility model；
Fig. 2 is the A-A profile of the backlight shown in Fig. 1.
Detailed description of the invention
With embodiment, this utility model is described in detail below in conjunction with the accompanying drawings.
As illustrated in fig. 1 and 2, a kind of backlight, it is specially a kind of straight-down negative and enters light backlight, including framework 1, described framework
1 is preferably square shape, and is arranged on the wiring board 2 of described framework 1 bottom surface, by two-sided between described framework 1 and wiring board 2
Glue or heat-conducting glue or glue are fixed and are pasted, and the side in described wiring board 2 frame oriented 1 is provided with some luminescent devices
3, described some luminescent devices 3 are welded on described wiring board 2, the light-emitting area of each luminescent device 3 is provided with one and dissipates
Optical lens 4.
Luminescent device 3 is arranged on the bottom of backlight, and light penetrates from the bottom up, substantially increases the brightness of backlight；
HUD generally uses highlighted high power consumption luminescent device, and such as LED, the brightness of single luminescent device 3 is high, there will be one in terms of front
The bright spot of one, by being provided above astigmat 4 at luminescent device 3, utilizes the principle of astigmat 4 divergent rays to adjust and sends out
The light of optical device 3 propagates distribution so that the illumination effect seen from front is more uniform.
Described astigmat 4 is preferably concavees lens, its exiting surface indent, it would however also be possible to employ have labyrinth exiting surface
Other type lens；Further, the exiting surface of described astigmat 4 also has astigmatic microstructures；Entering of described astigmat 4
Light is protruding with supporting construction 41 towards described wiring board 2, and described supporting construction 41 is positioned at the edge of the incidence surface of astigmat 4,
Can be some column structures, it is also possible to be circulus, described supporting construction 41 by double faced adhesive tape or heat-conducting glue or
Glue is fixing to be pasted onto on described wiring board 2.
The material of described astigmat 4 is plastics, such as PC, PMMA etc., or glass, it is also possible to be other high transmission rates
Material, be not specifically limited at this.
Described wiring board 2 is provided with heat sink 5 away from the side of luminescent device 3, can be conventional aluminium base, it is also possible to
It is that other have the metallic plate of good heat conductive performance.
Wiring board 2 back side uses heat sink 5, can effectively strengthen backlight area of dissipation, the beneficially heat radiation of luminescent device 3,
For side entrance back, the area of dissipation of luminescent device 3 increases, and bottom arrangement luminescent device 3, luminescent device 3
Between spacing bigger, it is to avoid the gathering of heat.
Described framework 1 is additionally provided with optical functional layer 6 away from the side of wiring board 2, and described optical functional layer 6 can be to lead
Tabula rasa or blooming, such as diffusion barrier, bright enhancement film etc., it is also possible to be that multi-layer optical film forms blooming group, or diffusion
Plate.
It is provided with the optical functional layer 6 of light guide plate or blooming etc composition at the exiting surface of backlight, one can be entered
Step optimization light effect and brightness.
Described framework 1 is additionally provided with brake sack 7 away from the side of wiring board 2.
The part that described wiring board 2 extends to outside backlight is provided with pad, is used for by connecting FPC or electric wire etc., with
Power supply or other external module connect；Described wiring board 2 can also be consistent with backlight with the size of heat sink 5, from backlight
Internal extraction connects FPC or electric wire etc., is connected with power supply or other external module.
Described wiring board 2 is FPC or PCB；Described luminescent device 3 is LED.
Embodiment described above only have expressed embodiment of the present utility model, and it describes more concrete and detailed, but also
Therefore the restriction to this utility model the scope of the claims can not be interpreted as, as long as using equivalent or the form institute of equivalent transformation
The technical scheme obtained, all should fall within protection domain of the present utility model.
Claims (10)
1. a backlight, it is characterised in that include framework and be arranged on the wiring board of described framework bottom surface, described wiring board
Side in frame oriented is provided with some luminescent devices, the light-emitting area of each luminescent device is provided with an astigmatism saturating
Mirror.
Backlight the most according to claim 1, it is characterised in that the exiting surface indent of described astigmat.
Backlight the most according to claim 1, it is characterised in that the incidence surface of described astigmat is convex to described wiring board
Go out to have supporting construction.
Backlight the most according to claim 1, it is characterised in that the exiting surface of described astigmat has the micro-knot of astigmatism
Structure.
Backlight the most according to claim 1, it is characterised in that the material of described astigmat is plastics or glass.
Backlight the most according to claim 1, it is characterised in that described wiring board is provided with away from the side of luminescent device
Heat sink.
Backlight the most according to claim 6, it is characterised in that described heat sink is metallic plate.
Backlight the most according to claim 6, it is characterised in that described heat sink is aluminium base.
Backlight the most according to claim 1, it is characterised in that described framework is additionally provided with away from the side of wiring board and leads
Tabula rasa or blooming or blooming group or diffuser plate.
Backlight the most according to claim 1, it is characterised in that described framework is additionally provided with away from the side of wiring board
Brake sack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620681660.5U CN205716749U (en) | 2016-07-01 | 2016-07-01 | A kind of backlight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620681660.5U CN205716749U (en) | 2016-07-01 | 2016-07-01 | A kind of backlight |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205716749U true CN205716749U (en) | 2016-11-23 |
Family
ID=57326996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620681660.5U Active CN205716749U (en) | 2016-07-01 | 2016-07-01 | A kind of backlight |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205716749U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021036106A1 (en) * | 2019-08-26 | 2021-03-04 | 华域视觉科技(上海)有限公司 | Illumination assembly for use in forming low beam widened region light shape of vehicle lamp |
-
2016
- 2016-07-01 CN CN201620681660.5U patent/CN205716749U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021036106A1 (en) * | 2019-08-26 | 2021-03-04 | 华域视觉科技(上海)有限公司 | Illumination assembly for use in forming low beam widened region light shape of vehicle lamp |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |