CN219799944U

CN219799944U - Collimation backlight module and display device for vehicle

Info

Publication number: CN219799944U
Application number: CN202320350508.9U
Authority: CN
Inventors: 张小齐; 吴新理; 李燕; 刘兴彬
Original assignee: Shenzhen Longli Technology Co Ltd
Current assignee: Shenzhen Longli Technology Co Ltd
Priority date: 2023-02-20
Filing date: 2023-02-20
Publication date: 2023-10-03
Anticipated expiration: 2033-02-20

Abstract

The utility model discloses a collimation backlight module and a display device for a vehicle, wherein the collimation backlight module for the vehicle comprises a lamp panel, a collimation lens plate, an optical diaphragm and a turning film, wherein the collimation lens plate, the optical diaphragm and the turning film are sequentially arranged above the lamp panel; the display device comprising the collimation backlight module for the vehicle has stronger projection display capability, can not be greatly influenced by the difference of the light inside and outside the vehicle used outdoors, and can conveniently acquire the required information during the driving process of the driver.

Description

Collimation backlight module and display device for vehicle

Technical Field

The utility model relates to the technical field of backlight modules, in particular to a collimation backlight module for a vehicle and a display device.

Background

A head-up display (HUD) is matched with equipment such as a driving computer, a navigator, a reversing radar and the like through an optical reflection principle, information such as a vehicle speed, an engine rotating speed, a gear state, a steering lamp, a navigation prompt, a fault prompt, a cruising state, a front vehicle distance and the like is displayed on a windshield in real time, and a driver can obtain various information of the vehicle without turning the head or lowering the head. Therefore, the driver can concentrate attention to a greater degree in the driving process, and the driving safety is improved.

Vehicles usually run outdoors, the brightness of the light inside and outside the vehicles is different, the display screen needs higher brightness and a specific light emitting angle, and a driver can easily and clearly acquire information when various information of the vehicle is projected on a windshield. However, the existing devices have the defects of insufficient brightness or unpaired light emitting angle, so that a driver cannot acquire information through head-up display.

Disclosure of Invention

In order to overcome at least one of the above-mentioned drawbacks of the prior art, the present utility model provides a collimating backlight module for a vehicle and a display device.

The utility model adopts the technical proposal for solving the problems that:

in a first aspect, the present utility model provides a collimating backlight module for a vehicle, including a lamp panel, and a collimating lens plate, an optical film and a turning film sequentially disposed above the lamp panel, wherein,

the collimating lens plate is provided with an array of lenses, the lamp plate is provided with an array of LEDs, and the lenses are arranged corresponding to the LEDs.

According to the vehicle collimation backlight module provided by the utility model, the array lens is arranged on the collimation lens plate, the array LED is arranged on the lamp plate, the lens is correspondingly arranged with the LED, the emergent angle of emergent light from the LED can be adjusted to be 1-4 degrees relative to the normal, the emergent angle is narrowed, the display brightness is improved, and the emergent light after the expansion and atomization treatment of the optical film is deflected and projected onto the windshield by the deflection film for display, so that a driver can obtain projected information more easily and clearly, and the function of HUD is realized.

Further, the optical film includes a diffusion sheet and a prism sheet, the diffusion sheet is positioned above the collimating lens plate, and the prism sheet is positioned above the diffusion sheet.

Further, the optical film includes a diffusion sheet and a prism sheet, the prism sheet is positioned above the collimating lens plate, and the diffusion sheet is positioned above the diffusion sheet.

Further, the collimating lens plate is a fresnel lens.

Further, a prism structure for deflecting the outgoing light is arranged on the turning film.

Further, a light-transmitting support plate for supporting the optical film is arranged between the collimating lens plate and the optical film.

Further, a reflecting cover is arranged between the lamp panel and the collimating lens plate.

Further, a support frame for supporting the collimating lens plate, the light-transmitting support plate and the turning film, respectively, is provided at the inner side edge of the back plate.

Further, the reflecting cover and the supporting frame are integrally injection molded.

The utility model also discloses a display device, which comprises a liquid crystal module and the collimating backlight module for the vehicle, wherein the liquid crystal module is positioned above the steering film.

The display device has stronger projection display capability, can not be influenced by large difference of internal and external light rays of a vehicle used outdoors, and a driver can conveniently acquire required information in the driving process.

In summary, the collimating backlight module and the display device for a vehicle of the utility model have the following technical effects:

the collimating lens plate of the automobile-used collimation backlight module is provided with the lens of array, is provided with the LED of array on the lamp plate, and the lens corresponds to the LED and sets up, and the lens of array can be from the emergent light of LED outgoing light angle adjustment to be the outgoing light that is 1-4 with the normal, narrows the outgoing light angle, improves display brightness, and the outgoing light that the reuse turns to the membrane will be passed through the optics diaphragm and enlarge and the atomizing is processed turns to and throws to the windshield and show to make the driver can obtain the information of throwing more easily and clearly, realize the function of HUD.

Other technical effects of the utility model are pointed out in the specification in connection with specific structures.

Drawings

FIG. 1 is a schematic view of a display device of the present utility model projecting a line of sight between a windshield and a driver;

FIG. 2 is a schematic cross-sectional view of a collimating backlight module for a vehicle according to the present utility model;

fig. 3 is a schematic exploded view of the collimating backlight module for a vehicle according to the present utility model.

Wherein, the meaning of the reference signs indicates:

1. a back plate; 2. an adhesive layer; 3. a lamp panel; 4. a white light reflector; 5. an LED; 6. a reflection cover; 7. a collimating lens plate; 8. a light-transmitting support plate; 9. a diffusion sheet; 10. a prism sheet; 11. a turning film; 12. a top shading adhesive; 13. a top protective film; 14. a support frame; 15. a liquid crystal module; 16. a windshield; 17. a display device.

Detailed Description

For a better understanding and implementation, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model.

In the description of the present utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

Referring to fig. 1-3, the present utility model provides a display device, which includes a liquid crystal module 15 and a collimating backlight module for a vehicle, wherein the liquid crystal module 15 is located above a turning film 11. The display device 17 has stronger projection display capability, is not greatly affected by the difference of the internal and external light rays of the vehicle used outdoors, and can conveniently acquire the required information during the driving process of the driver. The collimating backlight module for the vehicle comprises a lamp panel 3, a collimating lens plate 7, an optical film and a turning film 11, wherein the collimating lens plate 7, the optical film and the turning film 11 are sequentially arranged above the lamp panel 3, an array of lenses are arranged on the collimating lens plate 7, the array of LEDs 5 are arranged on the lamp panel 3, the lenses are correspondingly arranged with the LEDs 5, the light-emitting angle of the light emitted from the LEDs 5 can be adjusted to be 1-4 degrees with the normal, the light-emitting angle is narrowed, the display brightness is improved, the turning film 11 is used for turning and projecting the light emitted after the optical film is expanded and atomized to a windshield 16 for display, so that a driver can obtain projected information more easily and clearly, and the function of the HUD is realized.

As a preferred embodiment, the collimating lens plate may be a fresnel lens.

As a preferred embodiment, the optical film includes a diffusion sheet 9 and a prism sheet 10, the diffusion sheet 9 being located above the collimator lens plate 7, the prism sheet 10 being located above the diffusion sheet 9. As another preferred embodiment, the optical film includes a diffusion sheet 9 and a prism sheet 10, the prism sheet 10 being located above the collimator lens plate 7, the diffusion sheet 9 being located above the diffusion sheet 9. The positions of the diffusion sheet 9 and the prism sheet 10 in the optical film may be exchanged according to the optical effect. The diffusion sheet 9 can properly expand the angle of the light, so that the included angle between the outgoing light and the normal is 10-15 degrees; the prism sheet 10 expands the angle of the light so that the included angle between the outgoing light and the normal line is 30-45 deg., the small circle becomes a big circle and the big circle becomes an ellipse. The diffusion sheet 9 and the prism sheet 10 expand the angle of the outgoing light from the collimator lens plate 7 and atomize the outgoing light, thereby improving the display uniformity.

Specifically, the turning film 11 is provided with a prism structure for deflecting the outgoing light. The prismatic structure on turning film 11 may deflect the outgoing light 10-15 deg. so that the display is projected onto windshield 16 for viewing by the driver.

Specifically, a light-transmitting support plate 8 for supporting the optical film is provided between the collimator lens plate 7 and the optical film, preventing the optical film from being adsorbed onto the collimator lens plate 7, affecting the display effect.

Referring to fig. 2, a reflecting cover 6 is disposed between the lamp panel 3 and the collimating lens panel 7 to reflect the light emitted from the LED5 upward to the collimating lens panel 7, so as to improve the brightness of the light. The lamp plate 3 sets up in backplate 1, and is equipped with the gluing layer 2 that is used for stable connection between lamp plate 3 and the backplate 1, avoids lamp plate 3 to remove at will in backplate 1, does not have the position matching with other parts, influences the display effect. The adhesive layer 2 may be made of double-sided adhesive tape. The inner side edge of the back plate 1 is provided with a support frame 14 for supporting the collimator lens plate 7, the light-transmitting support plate 8 and the turning film 11, respectively. The support frame 14 may be made of plastic. Be provided with white reflector 4 on the lamp plate 3, and the LED5 of array all pierces through white reflector 4, avoids reflector 6 to appear warping and take place the position offset, leads to the reflection hole part or all on the reflector 6 that matches with LED5 position to correspond lamp plate 3, and lamp plate 3 can not reflect light even absorb light, seriously influences the display effect.

In the implementation of the present utility model, as a preferred embodiment, the reflecting cover 6 is an injection molding piece, and the reflecting cover 6 and the supporting frame 14 are integrally injection molded, so that the manufacturing and the installation are convenient.

In addition, referring to fig. 3, a top shading adhesive 12 for preventing light from being emitted from the edge of the back plate 1 and a top protection film 13 for protecting the completeness of the shading adhesive are sequentially arranged above the turning film 11, and the top shading adhesive 12 is connected with the back plate 1. Wherein the backboard 1 is a backboard middle frame integrated structure; the top protective film may be made of PET.

The technical means disclosed by the scheme of the utility model is not limited to the technical means disclosed by the embodiment, and also comprises the technical scheme formed by any combination of the technical features. It should be noted that modifications and adaptations to the utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.

Claims

1. The collimating backlight module for the vehicle is characterized by comprising a lamp panel (3), and a collimating lens plate (7), an optical diaphragm and a turning film (11) which are sequentially arranged above the lamp panel (3),

the collimating lens plate (7) is provided with an array of lenses, the lamp plate (3) is provided with an array of LEDs (5), and the lenses are arranged corresponding to the LEDs (5).

2. The vehicular collimation backlight module as recited in claim 1, wherein the optical film comprises a diffusion sheet (9) and a prism sheet (10), the diffusion sheet (9) is located above the collimation lens plate (7), and the prism sheet (10) is located above the diffusion sheet (9).

3. The vehicular collimation backlight module as recited in claim 1, characterized in that the optical film comprises a diffusion sheet (9) and a prism sheet (10), the prism sheet (10) being located above the collimation lens plate (7), the diffusion sheet (9) being located above the diffusion sheet (9).

4. A vehicular collimating backlight module according to claim 2 or 3, characterized in that the collimating lens plate (7) is a fresnel lens.

5. The vehicular collimating backlight module according to claim 4, wherein the turning film (11) is provided with a prism structure for deflecting the outgoing light.

6. The vehicular collimation backlight module as recited in claim 5, characterized in that a light-transmitting support plate (8) for supporting the optical film is provided between the collimation lens plate (7) and the optical film.

7. The vehicular collimation backlight module as recited in claim 6, characterized in that a reflecting cover (6) is arranged between the lamp panel (3) and the collimation lens panel (7).

8. The vehicular collimation backlight unit as recited in claim 7, characterized in that the vehicular collimation backlight unit comprises a back plate (1), and a support frame (14) for supporting the collimation lens plate (7), the light-transmitting support plate (8) and the turning film (11) respectively is provided at an inner edge of the back plate (1).

9. The vehicular collimation backlight unit as recited in claim 8, characterised in that the reflection housing (6) is injection molded integrally with the support frame (14).

10. A display device comprising a liquid crystal module (15) and a collimating backlight module for a vehicle according to any one of claims 1-9, said liquid crystal module (15) being located above said turning film (11).