CN104344300B - A kind of vehicle-mounted backlight - Google Patents
A kind of vehicle-mounted backlight Download PDFInfo
- Publication number
- CN104344300B CN104344300B CN201310314021.6A CN201310314021A CN104344300B CN 104344300 B CN104344300 B CN 104344300B CN 201310314021 A CN201310314021 A CN 201310314021A CN 104344300 B CN104344300 B CN 104344300B
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- CN
- China
- Prior art keywords
- backlight
- light
- guide plate
- light guide
- character
- 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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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V3/00—Globes; Bowls; Cover glasses
- F21V3/04—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings
- F21V3/06—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material
- F21V3/062—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material the material being plastics
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V3/00—Globes; Bowls; Cover glasses
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
- F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Planar Illumination Modules (AREA)
Abstract
The present invention proposes a kind of vehicle-mounted backlight, including：Backlight lamp base,Light guide plate on backlight lamp base is set,It is arranged in backlight chassis interior and in the light source of one end of the light guide plate,Reflective layer is set between backlight lamp base and light guide plate,By backlight base support and backlight lamp cover above the light guide plate,The character and pattern and the shading coating other than the character and pattern of light transmission are provided on the outer surface of backlight lamp cover,The character of the light transmission and at least part of pattern are close to the edge of the backlight lamp cover,And the photic zone being arranged between light guide plate and backlight lamp cover,Inside reflex reflector in the adjacent edges position that the backlight covers is set,By the light from light guide plate, inclined reflection projects the internal reflex reflector at at least part of character and pattern of the edge and at at least part of character and pattern at an angle.
Description
Technical field
The present invention relates to a kind of vehicle-mounted backlights, more particularly to a kind of backlight that the transmission range for vehicle is shown
Lighting device.
Background technology
In the prior art, vehicle-mounted backlight 10 usually more uses in automobile variable speed shift the cover, such as Fig. 1 and figure
Shown in 2.Its internal structure is by backlight lamp base 11, LED light source 12, light guide plate 13, reflective sheeting 14, light transmission paper 15, backlight lampshade
This few part composition of lid 16, as shown in Figure 3.Their arrangement and connection type are as shown in figure 4, wherein backlight lamp cover 16
It is connected by binder 17 with backlight lamp base 11.It is the respective action of various pieces below：
Backlight lamp base 11 is made up of injection molding, functions as bearing substrate to accommodate LED light source 12, lead
Tabula rasa 13, reflective sheeting 14, light transmission paper 15, backlight lamp cover 16.
LED light source 12 is located at the end of the close character " P " of Fig. 2 and backlight shown in Fig. 3 10, the effect of LED light source
It is the longitudinal direction launched along backlight 10（The direction of character " D " is directed toward from character " P "）Light.
Light guide plate 13 is made of PMMA materials, and effect is the concave point 18 by its bottom, as shown in figs. 4 and 7, comes
Change the direction for the light that LED light source 12 is launched, the direction of propagation for the light that major part is launched by LED light source 12 is by indulging
It is changed to the propagation to the outside of backlight to propagation（There is the light that least a portion of LED light source 12 is launched can be through light guide plate 13
Reflex and propagate downwards, i.e., to backlight lamp base propagate）.
Reflective sheeting 14 is mainly made of PET material, and effect is downward in order not to waste light guide plate 13（I.e. towards backlight
Lamp base direction）The light reflected, and the external progress of the light to light guide plate to be reflected down out towards backlight is secondary
Reflection, and then enhance the brightness for the light that backlight is launched outward.
Light transmission paper 15 is mainly made of PET material, and effect is the light for reflecting light guide plate and by the reflective of bottom
The brightness uniformity for the light that paper reflects（If not having light transmission paper, the brightness at the concave point of backlight is higher than surrounding nothing
Brightness at concave point）.
The effect of backlight lamp cover 16 is to shelter from most of light and allow light only from the character of backlight and pattern
It transmits, to clearly illustrate the character and pattern of backlight.Backlight lamp cover 16 by matrix and outer surface spray painting group
At, matrix by this transparent material injection moldings of PC, black-out paint 8 is sprayed on the outer surface of backlight lamp cover（Usually black
Deng the color of dark color system）, but be no black-out paint in the place of character and pattern 19, as shown in figure 5, in this way by backlight
Producing the light launched just can only transmit from character and pattern 19 and then generate regarding for character and pattern 19 " being lighted "
Feel effect.It may be implemented that " there be one layer of black-out paint in the outer surface of the cover, does not have in the place of character and pattern 19 but in the following ways
There is black-out paint "：Full black-out paint is sprayed on the surface of backlight lamp cover first, then passes through laser carving（A kind of laser engraving technique）Work
Skill gets rid of the black-out paint at character and pattern.
When backlight is lighted, user goes to see that backlight, backlight own with the direction perpendicular to backlight outer surface
The brightness of the light transmitted at character and pattern is uniform, but if user is sitting in position of driver and goes to see backlight
（That is, going to see backlight at a certain angle）, then the character and pattern at backlight edge S, as shown in fig. 6, being transmitted
The brightness of light be less than the brightness of the light that character at the central C far from backlight edge and pattern are transmitted, i.e., it is so-called
" edge effect ".As shown in fig. 7, solid line, which represents user, looks at backlight character and pattern straight, dotted line represents user and squints backlight
Lamp character and pattern.
Invention content
In order to overcome the disadvantage of the above-mentioned prior art, the technical problem to be solved in the present invention is to provide a kind of vehicle-mounted back ofs the body
Light lamp can efficiently solve the defect of " edge effect " of above-mentioned backlight, be imitated to enhance the display at edge of backlight
Fruit.
In order to solve the above-mentioned technical problem, the present invention proposes a kind of vehicle-mounted backlight, and the vehicle-mounted backlight includes：The back of the body
The light guide plate on backlight lamp base is arranged in light lamp base, is arranged inside backlight and in the light of one end of the light guide plate
Reflective layer is arranged between backlight lamp base and light guide plate in source, by backlight base support and the back of the body above the light guide plate
Light lamp cover is provided with the character and pattern and other than the character and pattern of light transmission on the outer surface of backlight lamp cover
Shading coating, the character of the light transmission and at least part of pattern exist close to the edge of the backlight lamp cover, and setting
The reflective dress in inside in the adjacent edges position that the backlight covers is arranged in photic zone between light guide plate and backlight lamp cover
Set, the internal reflex reflector by the light from light guide plate at an angle inclined reflection to the edge at least
It is projected at the character and pattern of a part and from at least part of character and pattern.
Preferably, the internal reflex reflector include be arranged it is reflective in the inner lateral surfaces of the backlight lamp cover
Element.
Preferably, the internal reflex reflector includes the reflective member being arranged in the exterior side surfaces of the light guide plate
Part.
Preferably, the internal reflex reflector includes being arranged in the inner lateral surfaces that are covered in the backlight and described
Reflecting element between the exterior side surfaces of light guide plate.
Preferably, the reflecting element is reflective sheeting, reflecting coating or reflective membrane.
Preferably, the internal reflex reflector include in the interior surface of the shading coating of backlight lamp cover at least
One layer of reflecting coating, to reflect the light transmitted from light guide plate side.
Preferably, the reflecting coating is high lac varnish.
Preferably, the matrix of backlight lamp cover includes the identical plastic pellet of the color for the light finally to be shown with backlight
Son, the brightness for the light observed when to weaken direct-view and the reflection for increasing the propagation of backlight lamp cover matrix interior focusing line are made
With.
Preferably, further include the multiple concave points being arranged in the bottom of the light guide plate, the concave point changes light source transmitting
The direction of propagation for the light that light source is launched is changed to the propagation to the outside of backlight by the direction of the light gone out.
According to another aspect of the present invention, it is also proposed that a kind of motor vehicles, including according to any in the claims
Vehicle-mounted backlight described in.
Description of the drawings
Fig. 1 and Fig. 2 be respectively illustrate the schematic diagram of vehicle-mounted backlight in the prior art according to the present invention according to；
Fig. 3 is the decomposition diagram for the building block for showing Fig. 1 and backlight shown in Fig. 2；
Fig. 4 is the schematic cross-sectional view for showing Fig. 1 and backlight shown in Fig. 2；
Fig. 5 is showing the schematic cross-sectional view of the backlight lamp cover of backlight according to prior art；
Fig. 6 and Fig. 7 is showing generation " edge effect " in the marginal position of backlight according to prior art and shows
It is intended to；
Fig. 8 is showing the schematic diagram of the backlight lamp cover of backlight according to an embodiment of the invention；
Fig. 9 and Figure 10 is the simulative display effect of the display location at the edge for respectively illustrating backlight in the prior art
With the contrast schematic diagram of the simulative display effect of embodiment shown in Fig. 8 according to the present invention；
Figure 11 is showing the structural schematic diagram of backlight according to another embodiment of the invention；.
Figure 12 is showing the signal of the edge display effect of the backlight of embodiment shown in Figure 11 according to the present invention
Figure.
Specific implementation mode
Backlight according to the present invention has substantially the same with the backlight described in Fig. 1~Fig. 7 of the prior art
The basic system of basic structure, backlight according to the present invention includes backlight lamp base 11, leading on backlight lamp base is arranged
Tabula rasa 13, be arranged backlight chassis interior and the LED light source of one end of the light guide plate 12, setting in backlight lamp base and
Reflective sheeting 14 between light guide plate, by backlight base support and backlight lamp cover 16 above light guide plate, setting leading
There is one layer of black-out paint 8 in the outer surface of light transmission paper 15 between tabula rasa and backlight lamp cover, wherein backlight lamp cover 16, but in character
Place with pattern 19 is no black-out paint.
The backlight according to an embodiment of the invention structure different from the backlight of the prior art is, is carrying on the back
The inner lateral surfaces of the close display character of light lamp cover and pattern are arranged reflex reflector 20, for example, one layer of reflective membrane of coating or
Paste reflective sheeting（Reflective sheeting herein is as the material of the reflective sheeting of composition backlight）, in this way can will be from leaded light such as Fig. 8
The Ray obliquity of plate side transmitted reflects back up in light guide plate, so reflect light again from by proximal edge character and
It transmits and is viewed by a user at pattern 19.
Fig. 9 and Figure 10 is the optical effect simulation drawing that software is simulated.Wherein, Fig. 9 is not in backlight lamp cover
Inner lateral surfaces are arranged optical effect simulation drawing when reflex reflector, Figure 10 be backlight lamp cover inner lateral surfaces setting it is anti-
Optical effect simulation drawing when electro-optical device.Pass through comparison, it is found that reflex reflector is arranged in the inner lateral surfaces of backlight lamp cover
When will be reflected back in light guide plate from the light of light guide plate side transmitted before a part, and then the light reflected is again with direction
Intermediate inclined angle from the character and pattern of proximal edge from transmiting backlight lamp cover, and which enhances from backlight
Covering edge character and pattern at the intensity and angular range of the light that transmit, and then when user is sitting in position of driver
Observe backlight（That is, observing backlight at a certain angle）When will not observe " edge effect ".
Boundary can also be eliminated or be mitigated to backlight according to another embodiment of the invention using with lower structure
Effect.As shown in figure 11, last layer reflecting effect high lac varnish well is sprayed between the matrix of backlight lamp cover 16 and black-out paint 8
30, it does not paint in character and 19 region of pattern only.Its production method is as follows, first on backlight lamp cover outer surface of matrix
High lac varnish is sprayed, then sprays black-out paint on high lac varnish surface again, it finally again will be at character and pattern by the technique of laser carving
Black-out paint and the removal of high lac varnish.
In this way, the presence of the high lac varnish due to backlight lamp cover outer surface of matrix, as shown in figure 12 so that backlight can be with
The light that backlight edge transmits is reflected, in this way from the light transmitted from the character and pattern of proximal edge
Intensity and angular range just increase, in turn the problem of " edge effect " be just solved.
According to another embodiment of the invention, in injection molding backlight lamp cover matrix, add in its plastic pellet
Add plastic pellet identical with the color of light that the light guide plate of backlight projects.For example, the light that the light guide plate of backlight projects is
White, then increase white plastic particle in the plastic pellet of molding backlight lamp cover matrix；For another example, the light guide plate of backlight
The light of injection is red, then increases red plastic particle in the plastic pellet of molding backlight lamp cover matrix.Its principle has
Two：The first, after originally fully transparent backlight lamp cover matrix becomes non-fully pellucidity, the light transmission of backlight lamp cover matrix
Rate is declined, and can thus weaken the brightness for the light observed when direct-view, strabismus simultaneously, but to the visual sense feeling of user
It is then that direct-view light luminance declines more.The second, it is increased and backlight in originally fully transparent backlight lamp cover matrix
After the identical plastic pellet of color for the light that light guide plate projects, since the side wall of backlight lamp cover matrix is no longer transparent
But it is identical with the light color that light guide plate projects, which enhances its reflexs to light, and then can make opposite
More light goes out the character and area of the pattern by proximal edge from offside reflection.In summary two kinds of reasons can accomplish to weaken
And solve " edge effect ".
Above-described embodiment can also be further improved in other embodiments according to the present invention, such as can be
Outside the side of light guide plate corresponding with the setting position of inner lateral surfaces of reflex reflector 20 of backlight lamp cover shown in Fig. 8
Reflex reflector, such as one layer of reflective membrane of coating or stickup reflective sheeting are set on the position on surface.In addition, according to another implementation
Example can also be arranged one solely between the inner lateral surfaces and the exterior side surface of corresponding light guide plate of backlight lamp cover 16
Vertical reflecting element, such as reflector.Then it can be enhanced from the side of the covering of backlight by above-mentioned improved embodiment
The intensity and angular range of the light transmitted at edge pattern and word, and then observe backlight when user is sitting in position of driver
（That is, observing backlight at a certain angle）When will not observe " edge effect ".
Although the present invention has been shown and described relative to embodiment, it will be appreciated by those of skill in the art that
The scope of the present invention can not departed from and make a variety of changes and improve.
Claims (9)
1. a kind of vehicle-mounted backlight, the vehicle-mounted backlight include：
Backlight lamp base,
Light guide plate on backlight lamp base is set,
It is arranged inside backlight and in the light source of one end of the light guide plate,
Reflective layer is set between backlight lamp base and light guide plate,
By backlight base support and backlight lamp cover above the light guide plate, be provided on the outer surface of backlight lamp cover
The character and pattern and the shading coating other than the character and pattern of light transmission, wherein the character of the light transmission and pattern
The edge of the close backlight lamp cover of at least part, and
The photic zone being arranged between light guide plate and backlight lamp cover,
Inside reflex reflector in the adjacent edges position that the backlight covers, the internal reflex reflector self-conductance in future are set
The light of tabula rasa at an angle inclined reflection at at least part of character and pattern of the edge and from institute
It states and is projected at least part of character and pattern.
2. vehicle-mounted backlight according to claim 1, which is characterized in that the internal reflex reflector includes being arranged described
The reflecting element in inner lateral surfaces that backlight covers.
3. vehicle-mounted backlight according to claim 1, which is characterized in that the internal reflex reflector includes being arranged described
Reflecting element in the exterior side surfaces of light guide plate.
4. vehicle-mounted backlight according to claim 1, which is characterized in that the internal reflex reflector includes being arranged in institute
State the reflecting element between the inner lateral surfaces and the exterior side surfaces of the light guide plate of backlight covering.
5. the vehicle-mounted backlight according to one of claim 2-4, which is characterized in that the reflecting element is reflective sheeting, anti-
Light coating or reflective membrane and the reflective layer are reflective sheetings.
6. vehicle-mounted backlight according to claim 1, which is characterized in that the internal reflex reflector is included in backlight lampshade
At least one layer of reflecting coating in the interior surface of the shading coating of lid, to reflect the light transmitted from light guide plate side
Line.
7. vehicle-mounted backlight according to claim 6, which is characterized in that the reflecting coating is high lac varnish.
8. vehicle-mounted backlight according to claim 1, which is characterized in that the matrix of backlight lamp cover include with backlight most
The identical plastic pellet of color for the light to be shown eventually, the brightness for the light observed when to weaken direct-view and increase backlight
The reflex that the cover matrix interior focusing line is propagated.
9. a kind of motor vehicles, including vehicle-mounted backlight according to any one of the preceding claims.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310314021.6A CN104344300B (en) | 2013-07-24 | 2013-07-24 | A kind of vehicle-mounted backlight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310314021.6A CN104344300B (en) | 2013-07-24 | 2013-07-24 | A kind of vehicle-mounted backlight |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104344300A CN104344300A (en) | 2015-02-11 |
| CN104344300B true CN104344300B (en) | 2018-09-28 |
Family
ID=52500489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310314021.6A Active CN104344300B (en) | 2013-07-24 | 2013-07-24 | A kind of vehicle-mounted backlight |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104344300B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3053941B1 (en) * | 2016-07-13 | 2018-07-20 | Peugeot Citroen Automobiles Sa | MASKING WALL REPAIR DEVICE FOR OPTICAL BLOCK VEHICLE USAGE |
| FR3062453B1 (en) * | 2017-01-27 | 2019-03-29 | Peugeot Citroen Automobiles Sa | LIGHT GUIDE LIGHTING DEVICE MOUNTED ON A CARRIER PART INCORPORATING A TRANSPARENT EXPANSION SCREEN |
| DE102018204422A1 (en) * | 2018-03-22 | 2019-09-26 | Zf Friedrichshafen Ag | Display device for a gear selector switch of a vehicle and method for producing a display device |
| CN108436282A (en) * | 2018-04-10 | 2018-08-24 | 上海小糸车灯有限公司 | Car light part paints formative method |
| CN113917594A (en) * | 2021-09-08 | 2022-01-11 | 浙江吉利控股集团有限公司 | Light-emitting device and steering wheel |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2332026Y (en) * | 1998-07-28 | 1999-08-04 | 万广辉 | Luminous label |
| CN2653542Y (en) * | 2003-02-24 | 2004-11-03 | 鸿富锦精密工业（深圳）有限公司 | Light-emittig diode backlight source |
| CN100583195C (en) * | 2003-08-07 | 2010-01-20 | 鸿富锦精密工业（深圳）有限公司 | Luminous indicating plate |
| CN2779537Y (en) * | 2005-01-19 | 2006-05-10 | 深圳市奥伦德电子有限公司 | LED display |
| DE102009011948A1 (en) * | 2009-03-10 | 2010-09-16 | GM Global Technology Operations, Inc., Detroit | Display device for a vehicle and method of manufacturing the display device |
| JP2012186049A (en) * | 2011-03-07 | 2012-09-27 | Hitachi Consumer Electronics Co Ltd | Illumination device and image display device using the same |
| CN202838873U (en) * | 2012-07-23 | 2013-03-27 | 龙腾兵 | Acrylic panel component |
| CN103047609B (en) * | 2012-12-07 | 2014-09-24 | 辅讯光电工业（苏州）有限公司 | Reflecting film, backlight module provided with same and display device provided with same |
-
2013
- 2013-07-24 CN CN201310314021.6A patent/CN104344300B/en active Active
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| CN104344300A (en) | 2015-02-11 |
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