CN205424587U

CN205424587U - Backlight and HUD backlight device

Info

Publication number: CN205424587U
Application number: CN201520561278.6U
Authority: CN
Inventors: 马红虎; 刘鹏
Original assignee: Foryou Multimedia Electronics Co Ltd
Current assignee: Foryou Multimedia Electronics Co Ltd
Priority date: 2015-07-29
Filing date: 2015-07-29
Publication date: 2016-08-03
Anticipated expiration: 2025-07-29

Abstract

The utility model relates to a design field in a poor light discloses a backlight, inner wall plane of reflection that light is satisfied is plated by detachable to comprise the reflecting plate of reflectance coating, respectively the reflecting plate is arranged in light is satisfied in the cell body of shell. It is effectual that this structure has even light, structure and the advantage of producing simple process, reduce cost.

Description

A kind of backing structure and HUD back lighting device

Technical field

This utility model relates to backlight design field, particularly to a kind of backing structure and HUD back lighting device.

Background technology

Among light source back lighting designs, light tunnel to be used or optical wand carry out even light, such as the backlighting technology of DLP projector, LCOS scialyscope, LCD backlight etc. it is widely used in, the main light path of the even light of light tunnel has the technology of light light outlet then and light entrance a size of 1:1 ratio, this type of light tunnel only has even light action for light path, and can not optimize light distribution angle.

Especially to HUD (HeadUpDisplay, head up displays) for image visible angle be in very small angle range, therefore the light tunnel of 1:1 ratio due to light shooting angle the biggest, the light distribution angle of light source cannot be optimized, light distribution angle is excessive, and cause light utilization efficiency low, cause light source needs to be driven into bigger power consumption, and bring heat dissipation problem to be difficult to solve.The problem that in prior art, Given this problem uses trumpet-shaped integrated light then or optical wand overcomes above-mentioned light distribution angle, as shown in Figure 1, the light entrance 11 that light satisfies 10 is less, light outlet 12 is bigger, but this light is then or optical wand needs to plate reflectance coating due to inwall 13, and light then or optical wand depth ratio is relatively big, plated film is difficult to uniformly, even light effect is bad, and complex manufacturing and cost are high.

Utility model content

In view of the above problems, the purpose of this utility model embodiment is to provide a kind of backing structure, and it is good that its light satisfies even light effect, and structure and production technology are simple, reduce cost.

A kind of backing structure that this utility model embodiment provides, described light inwall reflecting surface then is made up of dismountable reflecting plate being coated with reflectance coating, and described reflecting plate is placed in the cell body that described light satisfies shell.

Alternatively, fixed by gluing, screw or the bayonet socket that cooperates the most further between described reflecting plate.

Alternatively, described light light entrance then flushes with light source.

It addition, this utility model additionally provides a kind of HUD back lighting device, including arbitrary described backing structure.

Alternatively, described light light entrance then flushes with LED light source.

Alternatively, described light satisfies length about between 30～60mm.

Alternatively, described reflecting plate has 4 pieces.

Alternatively, described LED light source is the one single chip light source composition of 2*2 arrangement, 2*3 arrangement, 3*3 arrangement, 3*4 arrangement or 3*5 arrangement.

Therefore, apply the present embodiment technical scheme, owing to described light inwall reflecting surface then uses dismountable reflecting plate composition being coated with reflectance coating, reinstall after described reflecting plate can have been plated reflectance coating during production, making plated film uniform, structure and production technology are simple, reduce cost.

Accompanying drawing explanation

In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in describing below is only embodiments more of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is light structure chart then in prior art backing structure；

Light structure chart then in a kind of backing structure that Fig. 2 provides for this utility model；

Light Split type structure figure then in a kind of backing structure that Fig. 3 provides for this utility model；

A kind of reflection board structure figure that Fig. 4 provides for this utility model；

Light structure chart then in a kind of HUD back lighting device that Fig. 5 provides for this utility model.

Detailed description of the invention

Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of this utility model protection.

Embodiment 1:

The present embodiment provides a kind of backing structure, among light source back lighting designs, use the described even light of smooth tunnel 20, as shown in Figures 2 and 3, it is less for light entrance 21 that described light satisfies 20, bigger horn-like of light outlet 22 optimizes light distribution angle, described light then 20 inwall reflecting surface be made up of dismountable reflecting plate 23 being coated with reflectance coating, such as Fig. 2, shown in 3 and 4, fixing connection between each described reflecting plate 23, each described reflecting plate 23 is placed in the cell body that described light satisfies shell, reinstall in cell body after described reflecting plate 23 can have been plated reflectance coating during production, make plated film uniform, structure and production technology are simple, reduce cost.

Can be, but not limited to, connect fixing by gluing, screw or the bayonet socket 24 that cooperates the most further between described reflecting plate 23, or other conventional connected modes can also be used to fix.

Described light then 20 light entrance 21 flush with light source 40, its size and shape are according to light source 40 size design, and described light light outlet 22 size then and shape are according to the size design of light receiver end.The light entrance 21 that the light of light source 40 satisfies 20 through described light is incident, through described light then 20 the even light of reflecting plate 23 after send through light outlet 22, described light then 20 length determine with light entrance 21 size according to light outlet 22.The light outlet 22 of described smooth tunnel 20 is the most parallel with light entrance 21, the most not necessarily about centrosymmetry, determines light entrance 21 and the relative position relation of light outlet 22 according to HUD imaging optical path.

Embodiment 2:

For HUD, the visible angle of image is in very small angle range especially, uses described light satisfy even light and optimize light distribution angle, simplifies light processing technique then simultaneously, reduce cost.

As shown in Figure 5, described light then 30 inwall reflecting surface be made up of dismountable reflecting plate 33 being coated with reflectance coating, can be, but not limited to, described reflecting plate 33 has 4 pieces, fixed by gluing, screw or the bayonet socket 34 that cooperates the most further between described reflecting plate 33, or other conventional connected modes can also be used to fix, and described reflecting plate 33 is placed in the cell body that described light satisfies shell.

Described light light entrance 31 then flushes with LED light source 50, its size and shape are according to LED light source 50 size design, size and the shape of described light light outlet 32 then design according to the effective dimensions of light receiver end TFT-LCD display screen, the light entrance 31 that the light of LED light source 50 satisfies 30 through described light is incident, through described light then 30 the even light of reflecting plate 33 after send through light outlet 32 and to incide on TFT-LCD display screen.Described light 30 length then determine with light entrance 31 size according to light outlet 32, and described light satisfies 30 length about between 30～60mm.The light outlet 32 of described smooth tunnel 30 is the most parallel with light entrance 31, the most not necessarily about centrosymmetry, determines light entrance 31 and the relative position relation of light outlet 32 according to HUD imaging optical path.Described LED light source is the one single chip light source composition of 2*2 arrangement, 2*3 arrangement, 3*3 arrangement, 3*4 arrangement or 3*5 arrangement, the spacing structure of one single chip > 0.2mm.

Visible, described light inwall reflecting surface then is made up of dismountable reflecting plate being coated with reflectance coating, simplifies processing technique when HUD back lighting device produces, and plated film is uniform, reduces cost.

Embodiments described above, is not intended that the restriction to this technical scheme protection domain.Amendment, equivalent and the improvement etc. made within any spirit at above-mentioned embodiment and principle, within should be included in the protection domain of this technical scheme.

Claims

1. a backing structure, it is characterised in that light inwall reflecting surface then is made up of dismountable reflecting plate being coated with reflectance coating, and each described reflecting plate is placed in the cell body that described light satisfies shell.

2. backing structure as claimed in claim 1 a kind of, it is characterised in that fixed by gluing, screw or the bayonet socket that cooperates the most further between described reflecting plate.

3. a kind of backing structure as claimed in claim 1 or 2, it is characterised in that described light light entrance then flushes with light source.

4. a HUD back lighting device, it is characterised in that include arbitrary described backing structure in claims 1 to 3.

5. a kind of HUD back lighting device as claimed in claim 4, it is characterised in that described light light entrance then flushes with LED light source.

6. a kind of HUD back lighting device as claimed in claim 5, it is characterised in that described light satisfies length between 30～60mm.

7. a kind of HUD back lighting device as claimed in claim 6, it is characterised in that described reflecting plate has 4 pieces.

8. a kind of HUD back lighting device as claimed in claim 7, it is characterised in that described LED light source is the one single chip light source composition of 2*2 arrangement, 2*3 arrangement, 3*3 arrangement, 3*4 arrangement or 3*5 arrangement.