CN219590607U - Optical component and backlight device - Google Patents

Abstract

The utility model provides an optical component and a backlight device, which relate to the technical field of head-up display and comprise the following components: the light rod assembly is of a trapezoid structure with openings at two ends and hollow inside, the light plate is fixedly connected with the small end of the light rod assembly, a light source is arranged on the light plate, the inner wall of the light rod assembly is provided with a reflecting layer, and the light source emits light rays towards the large end of the light rod assembly. The light is reflected by the reflecting layer of the light rod assembly, then is emitted out of the large end of the light rod assembly, and is emitted to the Fresnel lens, and is projected to the display screen through the Fresnel lens. The lamp panel and the light rod assembly are in fastening connection, the reliability of connection is improved, the lamp panel and the light rod assembly are not easy to loose, the light rod assembly is not deformed, the structural rigidity of the optical component is greatly enhanced, the stability and consistency of mass production product quality are guaranteed, the improvement of the optical reflectivity and the film firmness of the light rod assembly is facilitated, and the projection effect is guaranteed.

Description

Optical component and backlight device

Technical Field

The utility model relates to the technical field of head-up display, in particular to an optical component and a backlight device.

Background

The head-up display is abbreviated as HUD, and is called as head-up display system, which refers to a multifunctional instrument panel with a vehicle driver as a center and with blind operation. The method has the function of projecting important driving information such as speed per hour and navigation onto windshield glass in front of a driver, so that the driver can see the important driving information such as speed per hour and navigation without lowering the head and turning the head as much as possible.

In a backlight device of a head-up display system, the backlight device generally comprises a light source, a light bar, a fresnel lens and a display screen, wherein a reflecting layer is arranged in the light bar, so that light rays can be reflected to the fresnel lens through the reflecting layer and projected to the display screen through the fresnel lens.

The existing backlight device is characterized in that a lamp panel of a light source and a light bar are connected by a buckle, so that the overall rigidity of an optical component is insufficient, the reflection effect of the light bar is influenced, and the stability, consistency and projection effect of the quality of batch products are further influenced.

Disclosure of Invention

The embodiment of the utility model aims to provide an optical component and a backlight device, wherein a light rod assembly and a lamp panel are connected in a fastening way, so that the overall rigidity of the structure is improved, and the projection effect is ensured.

In one aspect of the embodiments of the present utility model, an optical component is provided, including a light rod assembly and a light plate, where the light rod assembly is a trapezoid structure with two open ends and a hollow interior, the light plate is fixedly connected with a small end of the light rod assembly, a light source is disposed on the light plate, a reflective layer is disposed on an inner wall of the light rod assembly, and the light source emits light toward a large end of the light rod assembly, so that the light is emitted from the large end of the light rod assembly after being reflected by the reflective layer of the light rod assembly.

Optionally, the light bar assembly and the lamp panel are fastened by screws; the light rod assembly is provided with a screw column, the screw column is provided with internal threads, and the screw penetrates through the lamp panel and is connected with the screw column.

Optionally, the optical rod assembly includes four light boards that connect gradually, four the light board encloses to form the trapezoidal body structure, adjacent two the junction of light board is provided with respectively and prevents slow-witted structure.

Optionally, the optical rod assembly includes first light board and the second light board of relative setting to and the third light board and the fourth light board of relative setting, prevent slow-witted structure including setting up respectively first light board with the reference column of the both sides of second light board, and set up respectively the third light board with the both sides of fourth light board, with the locating hole of reference column matching.

Optionally, the height of the positioning post is greater than the depth of the positioning hole, so that after the positioning post is matched with the positioning hole, the positioning post protrudes out of the assembly surface of the plane where the positioning hole is located.

Optionally, the protruding amount of the positioning column protruding from the assembling surface is more than or equal to 0.5T, and T is the wall thickness of the light plate.

Optionally, the fool-proof structure includes buckles respectively arranged at two sides of the first light plate and the second light plate, and clamping grooves respectively arranged at two sides of the third light plate and the fourth light plate and matched with the buckles.

Optionally, the optical rod assembly is further provided with a wire clamping structure, and the wire clamping structure is used for clamping the wire harness.

Optionally, the wire clamping structure comprises a hook arranged on the optical rod assembly, and the hook protrudes out of the optical rod assembly and bends towards the optical rod assembly.

In another aspect of an embodiment of the present utility model, there is provided a backlight apparatus including: the optical component, the Fresnel lens and the display screen are arranged on the light emitting side of the optical component, and light rays emitted by the optical component are projected to the display screen through the Fresnel lens.

The optical component and the backlight device provided by the embodiment of the utility model comprise a lamp panel provided with a light source and a light rod assembly, wherein the two ends of the light rod assembly are open, the inside of the light rod assembly is hollow, the lamp panel is positioned at the small end of the light rod assembly and is fixedly connected with the light rod assembly, the inner wall of the light rod assembly is provided with a reflecting layer, the light source emits light rays towards the large end of the light rod assembly, the light rays are reflected by the reflecting layer of the light rod assembly, are emitted through the large end of the light rod assembly, are emitted to a Fresnel lens, and are projected to a display screen through the Fresnel lens. The lamp panel and the light rod assembly are in fastening connection, the reliability of connection is improved, the lamp panel and the light rod assembly are not easy to loose, the light rod assembly is not deformed, the structural rigidity of the optical component is greatly enhanced, the stability and consistency of mass production product quality are guaranteed, the improvement of the optical reflectivity and the film firmness of the light rod assembly is facilitated, and the projection effect is guaranteed.

The backlight device includes the optical member as claimed in any one of the above, and a fresnel lens and a display screen provided on a light-emitting side of the optical member, and light emitted from the optical member is projected to the display screen through the fresnel lens. The emergent light of the light source is emitted from the large end of the light rod assembly after being reflected by the reflecting layer of the light rod assembly, and is reflected to the Fresnel lens and projected to the display screen through the Fresnel lens. When the method is applied to a head-up display system, the head-up display technology is realized.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments of the present utility model will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present utility model and should not be considered as limiting the scope, and other related drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the structure of an optical component provided in this embodiment;

FIG. 2 is a schematic view of an exploded structure of an optical component according to the present embodiment;

FIG. 3 is a schematic view of an optical plate structure of an optical component according to the present embodiment;

FIG. 4 is a second schematic diagram of the structure of an optical plate of the optical component according to the present embodiment;

FIG. 5 is a schematic view showing a partial structure of an optical member according to the present embodiment;

fig. 6 is a second schematic view of the partial structure of the optical component according to the present embodiment.

Icon: 10-a lamp panel; 101a, 101 b-positioning holes; 11-a light bar assembly; 110-screw posts; 111-a first light panel; 111 a-plate body; 113-a third light panel; 113 a-plate body; 113 b-a flap; 114-a fourth light panel; 115 a-positioning posts; 115 b-positioning holes; 116 a-a catch; 116 b-a card slot; 117-positioning the protrusions; 118-a wire clamping structure; 20-screws; a-a mounting surface; h-protrusion.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

In the description of the present utility model, it should be noted that, the azimuth or positional relationship indicated by the terms "inner", "outer", etc. are based on the azimuth or positional relationship shown in the drawings, or the azimuth or positional relationship that is commonly put in use of the product of this application, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and therefore should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

It should also be noted that the terms "disposed," "coupled," and "connected" are to be construed broadly, and may be, for example, fixedly coupled, detachably coupled, or integrally coupled, unless otherwise specifically defined and limited; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the existing backlight device for head-up display, the lamp panel provided with the light source is connected with the light bar through the buckle, so that the overall rigidity of the optical component is insufficient, the reflection effect of the light bar is influenced, and the stability, consistency and projection effect of the quality of batch products are further influenced.

Referring to fig. 1, an embodiment of the present utility model provides an optical component, including: the light rod assembly 11 and the lamp plate 10, the light rod assembly 11 is of a trapezoid structure with two open ends and hollow inside, the lamp plate 10 is fixedly connected with the small end of the light rod assembly 11, a light source is arranged on the lamp plate 10, the inner wall of the light rod assembly 11 is provided with a reflecting layer, the light source emits light towards the large end of the light rod assembly 11, and the light is emitted from the large end of the light rod assembly 11 after being reflected by the reflecting layer of the light rod assembly 11.

As mentioned in the background art, in the backlight device of the head-up display system, the light source, the light rod assembly 11, the fresnel lens and the display screen are disposed along the light path, and the reflective layer is disposed in the light rod assembly 11, so that light can be reflected to the fresnel lens through the reflective layer and projected to the display screen through the fresnel lens. In the utility model, the light source is arranged on the lamp panel 10, the light bar assembly 11 is of a trapezoid hollow structure with a large end and a small end, and the small end of the light bar assembly 11 is fastened with the lamp panel 10 to be firmly connected.

In the prior art, the light rod assembly 11 utilizes the buckle 116a at the bottom to clamp the lamp panel 10, and the clamping reliability of the light rod assembly and the lamp panel is poor and the light rod assembly is easy to release. The fastening mode is adopted, so that the reliability of connection is improved.

Therefore, the optical component provided by the embodiment of the utility model comprises the lamp panel 10 provided with the light source and the light rod assembly 11, wherein the two ends of the light rod assembly 11 are open, the inside of the light rod assembly 11 is hollow, the lamp panel 10 is positioned at the small end of the light rod assembly 11 and is fixedly connected with the light rod assembly 11, the inner wall of the light rod assembly 11 is provided with the reflecting layer, the light source emits light towards the large end of the light rod assembly 11, and the light is emitted from the large end of the light rod assembly 11 after being reflected by the reflecting layer of the light rod assembly 11, is emitted to the Fresnel lens and is projected to the display screen through the Fresnel lens. The lamp panel 10 and the light rod assembly 11 are in fastening connection, the reliability of connection is improved, the lamp panel and the light rod assembly are not easy to loose, the light rod assembly 11 is not deformed, the structural rigidity of the optical component is greatly enhanced, the stability and consistency of mass production product quality are guaranteed, the improvement of the optical reflectivity and the film firmness of the light rod assembly 11 is facilitated, and the projection effect is guaranteed.

Specifically, as shown in fig. 2, the light bar assembly 11 and the lamp panel 10 are fastened by screws 20; the light rod assembly 11 is provided with a screw column 110, the screw column 110 is provided with internal threads, and the screw 20 penetrates through the lamp panel 10 and is connected with the screw column 110.

When the light rod assembly 11 is fastened with the lamp panel 10, the screws 20 are adopted for fastening, the screws 20 are convenient to disassemble and assemble, and the connection is firm. Screw columns 110 are respectively arranged on two sides of the small end of the light rod assembly 11, internal threads are formed on the inner wall of the screw columns 110, mounting holes are formed in corresponding positions on the lamp panel 10, screws 20 penetrate through the mounting holes of the lamp panel 10 and are fastened with the screw columns 110, and fastening connection of the lamp panel 10 and the light rod assembly 11 is achieved.

In addition, when the lamp panel 10 and the light rod assembly 11 are installed, the lamp panel is positioned through the positioning holes and then fastened through screws after being positioned; illustratively, the lamp panel 10 is provided with a positioning hole 101a and a positioning hole 101b, which are respectively connected with the positioning protrusion 117 at the small end of the light rod assembly 11 in a matching manner, so as to realize positioning. One of the positioning holes 101b is a kidney-shaped positioning hole, so that the positioning protrusion 117 can move in the kidney-shaped positioning hole 101b, and a certain range of installation allowance is given when the light rod assembly 11 and the lamp panel 10 are installed, so that assembly errors are compensated, and the problem that the light rod assembly is not installed due to the errors is avoided.

The light rod assembly 11 comprises four light plates which are sequentially connected, the four light plates are enclosed to form a trapezoid structure, and foolproof structures are respectively arranged at the joints of two adjacent light plates.

Illustratively, the four light panels are connected in sequence to form the trapezoid structure having the large end and the small end, and the large end and the small end both form a rectangle. Adjacent light boards are fixedly connected through fool-proof structures, and assembly errors can be avoided through the fool-proof structures.

Further, the light bar assembly 11 includes a first light plate 111 and a second light plate disposed opposite to each other, and a third light plate 113 and a fourth light plate 114 disposed opposite to each other, and the fool-proof structure includes positioning posts 115a disposed on both sides of the first light plate 111 and the second light plate, respectively, and positioning holes 115b disposed on both sides of the third light plate 113 and the fourth light plate 114, respectively, and matched with the positioning posts.

The first light panel 111 and the second light panel are disposed opposite to each other, and the third light panel 113 and the fourth light panel 114 are disposed opposite to each other, in other words, the first light panel 111, the third light panel 113, the second light panel and the fourth light panel 114 are sequentially connected to form the light bar assembly 11 of the trapezoid structure.

Positioning columns 115a are respectively arranged on two side edges of the first light plate 111, and two sides of the first light plate 111 are respectively connected with positioning holes 115b on the third light plate 113 and the fourth light plate 114 in a matching way through the positioning columns 115 a; the second light plate is arranged in the same way.

For the third light plate 113, positioning holes 115b are respectively arranged at two sides of the third light plate 113, and two sides of the third light plate 113 are respectively connected with positioning columns 115a on the first light plate 111 and the second light plate in a matching way through the positioning holes 115 b; the fourth light panel 114 is disposed in a similar manner, and will not be described herein. Thus, the four light panels of the light bar assembly 11 are connected by matching the positioning posts 115a and the positioning holes 115b.

Illustratively, the locating holes 115b are kidney shaped locating holes and correspondingly, the locating posts 115a are kidney shaped locating posts for mating installation.

In addition, the height of the positioning post 115a is greater than the depth of the positioning hole 115b, so that after the positioning post 115a is matched with the positioning hole 115b, the positioning post 115a protrudes from the assembly surface a of the plane where the positioning hole is located.

Generally, after the positioning column is matched with the positioning hole, the end part of the positioning column is flush with the end part of the positioning hole after the positioning column penetrates into the positioning hole; in the present utility model, after the positioning post 115a penetrates into the positioning hole 115b, since the height of the positioning post 115a is greater than the depth of the positioning hole 115b, the positioning post 115a protrudes from the assembly surface a of the plane of the positioning hole 115b, so that the mounting rigidity can be effectively enhanced.

In addition, as shown in fig. 5, the protrusion h of the positioning post 115a from the mounting surface a is equal to or greater than 0.5t, where t is the wall thickness of the light plate, and the protrusion h of the positioning post 115a is determined according to the wall thickness of the light plate, so as to improve the rigidity of the light rod assembly 11.

Taking the first light plate 111 in fig. 3 as an example, it includes a plate body 111a, and ribs are provided on four sides of the plate body 111a, so that the wall thickness of the first light plate 111 is based on the wall thickness of the plate body 111 a; taking the third light panel 113 in fig. 4 as an example, the third light panel comprises a panel body 113a, four edges of the panel body 113a are provided with ribs to serve as reinforcing ribs, the upper end of the panel body is further provided with a turning plate 113b, the turning plate 113b is provided with mounting holes for mounting other devices, and the wall thickness of the third light panel 113 is based on the wall thickness of the panel body 113 a. The protrusion h of the positioning column 115a is calculated, and is determined according to the thickness of the plate body of the light plate where the positioning column 115a is located.

The fool-proof structure includes a buckle 116a disposed at both sides of the first light plate 111 and the second light plate, respectively, and a clamping groove 116b disposed at both sides of the third light plate 113 and the fourth light plate 114, respectively, matching the buckle 116 a.

Besides the above-mentioned light plate connecting mode through the matching mode of the positioning column 115a and the positioning hole 115b, the light plate is also connected through the matching mode of the buckle 116a and the clamping groove 116b. Specifically, the two sides of the first light plate 111 are respectively provided with a buckle 116a, and the two sides of the first light plate 111 are respectively connected with the clamping grooves 116b on the third light plate 113 and the fourth light plate 114 in a matching way through the buckles 116 a; the second light plate is arranged in the same way.

For the third light plate 113, two sides of the third light plate 113 are respectively provided with a clamping groove 116b, and two sides of the third light plate 113 are respectively connected with the clamping buckles 116a on the first light plate 111 and the second light plate in a matching way through the clamping grooves 116 b; the fourth light panel 114 is arranged in a similar manner; the light bar assembly 11 is formed by connecting four light panels in a matching manner through the buckle 116a and the clamping groove 116b.

Therefore, the four light plates are assembled fool-proof by matching the positioning columns 115a at different positions with the positioning holes 115b and matching the buckles 116a with the clamping grooves 116b.

On the basis, as shown in fig. 2, the optical rod assembly 11 is further provided with a wire clamping structure 118, and the wire clamping structure 118 is used for clamping the wire harness.

The wire harness is fixed and clamped through the wire clamping structure 118, so that the wire harness is convenient to be regular. The wire clip structure 118 includes hooks disposed on the light bar assembly 11, which protrude from the light bar assembly 11 and are bent toward the light bar assembly 11.

The convex hooks are arranged on the light rod assembly 11, and a containing space is formed between the hooks and the light rod assembly 11 and used for clamping the wire harness, so that the problem of wire harness storage is effectively solved. As shown in fig. 6, the wire harness is clamped into the wire clamping structure 118 firmly, and is not easy to fall out, so that the use requirement of a product is met, and the processing and manufacturing of a die are facilitated.

In summary, according to the optical component of the utility model, the lamp panel 10 and the light rod assembly 11 are fastened by the screws, the light rod assembly 11 is split into four light panels, positioning assembly is realized by the structures of the buckle 116a and the positioning column 115a, foolproof is realized between the four light panels, and the waist-shaped positioning column 115a protrudes out of the assembly surface A of the assembly part after assembly, so that the rigidity of the light rod assembly 11 is increased. A wire clamping structure 118 for clamping wires is also designed on the light bar assembly 11 to fix the wire harness. During assembly, the light rod assembly 11 is assembled, and finally the mounting holes of the lamp panel 10 are aligned to the two screw posts 110 on the light rod assembly 11 respectively to assemble and lock the screws 20, so that the light rod assembly 11 and the lamp panel 10 are good in clamping reliability and not easy to loose.

The embodiment of the utility model also discloses a backlight device which comprises the optical component, a Fresnel lens and a display screen, wherein the Fresnel lens and the display screen are arranged on the light emitting side of the optical component, and the light rays emitted by the optical component are projected to the display screen through the Fresnel lens.

The outgoing light of the light source is emitted from the large end of the light rod assembly 11 after being reflected by the reflecting layer of the light rod assembly 11, and the light is reflected to the Fresnel lens and projected to the display screen through the Fresnel lens. When the method is applied to a head-up display system, the head-up display technology is realized.

The backlight device includes the same structure and advantageous effects as those of the optical member in the foregoing embodiment. The structure and advantageous effects of the optical component have been described in detail in the foregoing embodiments, and are not described in detail herein.

The above description is only an example of the present utility model and is not intended to limit the scope of the present utility model, and various modifications and variations will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. An optical component, comprising: the light rod assembly is of a trapezoid structure with openings at two ends and hollow inside, the light plate is fixedly connected with the small end of the light rod assembly, a light source is arranged on the light plate, the inner wall of the light rod assembly is provided with a reflecting layer, the light source emits light towards the large end of the light rod assembly, so that the light is emitted from the large end of the light rod assembly after being reflected by the reflecting layer of the light rod assembly.

2. The optical component of claim 1, wherein the light bar assembly and the light panel are fastened by screws; the light rod assembly is provided with a screw column, the screw column is provided with internal threads, and the screw penetrates through the lamp panel and is connected with the screw column.

3. The optical component of claim 1, wherein the optical rod assembly comprises four optical plates which are sequentially connected, the four optical plates are enclosed to form the trapezoid structure, and fool-proof structures are respectively arranged at the connection positions of two adjacent optical plates.

4. The optical component of claim 3, wherein the light bar assembly comprises a first light plate and a second light plate which are oppositely arranged, and a third light plate and a fourth light plate which are oppositely arranged, and the fool-proof structure comprises positioning columns respectively arranged on two sides of the first light plate and the second light plate, and positioning holes respectively arranged on two sides of the third light plate and the fourth light plate and matched with the positioning columns.

5. The optical component of claim 4, wherein the height of the positioning post is greater than the depth of the positioning hole such that the positioning post protrudes from the mounting surface of the plane in which the positioning hole is located after the positioning post is mated with the positioning hole.

6. The optical component of claim 5, wherein the protrusion of the positioning posts from the mounting surface is greater than or equal to 0.5t, where t is the wall thickness of the light sheet.

7. The optical component of any one of claims 4 to 6, wherein the fool-proof structure comprises a buckle disposed on both sides of the first light plate and the second light plate, respectively, and a card slot disposed on both sides of the third light plate and the fourth light plate, respectively, and mated with the buckle.

8. The optical component of claim 1, wherein the optical rod assembly is further provided with a wire clamping structure for clamping the wire harness.

9. The optical component of claim 8, wherein the clip line structure comprises a hook disposed on the light bar assembly, the hook protruding from the light bar assembly and curving toward the light bar assembly.

10. A backlight device comprising the optical member according to any one of claims 1 to 9, and a fresnel lens and a display screen provided on a light-emitting side of the optical member, wherein light emitted from the optical member is projected to the display screen through the fresnel lens.