Vehicle-mounted head-up display device

Abstract

The utility model relates to a vehicle-mounted head-up display device, and relates to the technical field of head-up display systems, the vehicle-mounted head-up display device comprises a support, a diffusion film and an imaging screen, the support is provided with a first mounting groove, the imaging screen is fixed in the mounting groove, the diffusion film is arranged between the imaging screen and the support, and the diffusion film is arranged in the first mounting groove. Installation protrusions are arranged on the two opposite sides of the diffusion film respectively, fixing inserting grooves are correspondingly formed in the support, and the installation protrusions are clamped in the fixing inserting grooves in a one-to-one correspondence mode. The diffusion film is installed in the mode that the installation protrusions are matched with the fixing insertion grooves, use of parts such as gum or bolts can be reduced, the production cost is reduced, the environment is protected, meanwhile, the installation protrusions form a limiting structure, operation is convenient, the diffusion film can be rapidly and accurately installed on the support, the operation difficulty is reduced, and the installation speed is increased.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of head-up display systems, in particular to a vehicle-mounted head-up display device. BACKGROUND

[0002] Head-up display, abbreviated as HUD, also known as head-up display system, is a center of vehicle driver, blind operation, multifunctional instrument panel. Its function is to project speed, navigation and other important driving information to the windshield in front of the driver, so that the driver can see the speed, navigation and other important driving information as much as possible without looking down and turning his head.

[0003] The existing head-up display image generation unit mainly includes optical elements such as light source, lens, diffusion film and imaging screen, which can generate high-brightness image information. The existing diffusion film is usually fixed on the support by adhesive, which is not only inconvenient to assemble, but also high in cost, and has defects such as glue leakage and service life. CONTENT OF THE UTILITY MODEL

[0004] The purpose of the embodiment of the present application is to provide a vehicle-mounted head-up display device to solve the above technical problems.

[0005] In a first aspect, the utility model provides a vehicle-mounted head-up display device, which comprises a support, a diffusion film and an imaging screen. The support is provided with a first mounting groove, and the imaging screen is fixed in the mounting groove. The diffusion film is arranged between the imaging screen and the support. The diffusion film is provided with mounting protrusions on opposite sides. The support is provided with fixed insertion slots corresponding to the mounting protrusions. The mounting protrusions are correspondingly inserted into the fixed insertion slots.

[0006] Further, the support is provided with a second mounting groove matched with the size and shape of the diffusion film. The second mounting groove is provided with insertion slot holes communicating with the fixed insertion slots at the edge. The diffusion film is arranged in the second mounting groove. The mounting protrusions are inserted into the fixed insertion slots through the insertion slot holes.

[0007] Further, the bottom wall of the second mounting groove has a first mounting surface abutting against the edge of the diffusion film. The inside of the mounting groove has a second mounting surface abutting against the mounting protrusions. The second mounting surface and the second mounting surface are respectively located on opposite sides of the diffusion film.

[0008] Further, the second mounting surface is protruded from the first mounting surface towards the side of the diffusion film away from the first mounting surface, so that the mounting protrusions are clamped between the first mounting surface and the second mounting surface.

[0009] Further, the imaging screen is provided with a pasting assembly. The imaging screen is connected with the support through the pasting assembly.

[0010] Further, the first mounting groove is provided with a fixed cover plate at the opening, the fixed cover plate is detachably connected with the support, and the fixed cover plate is used for fixing the imaging screen.

[0011] Further, the head-up display device further comprises a backlight assembly, the backlight assembly is connected with the support of the head-up display device, the backlight assembly is located at a side of the diffusion film away from the imaging screen, and light emitted by the backlight assembly forms a projection image after sequentially passing through the diffusion film and the imaging screen.

[0012] Further, the backlight assembly comprises a light source, a light bar and a Fresnel lens, the light bar is connected with the light source at an incident end, the Fresnel lens is arranged at an emitting end of the light bar, and the emitting end of the light bar is connected with the support.

[0013] Further, the side of the Fresnel lens away from the light bar is further provided with a polaroid.

[0014] The head-up display device provided by the utility model has the advantages of reducing the use of components such as back adhesive or bolts, reducing production cost, protecting the environment, forming a limiting structure through the installation protrusion, facilitating operation, quickly and accurately installing the diffusion film on the support, reducing operation difficulty and improving installation speed. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments of the present application. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0016] Figure 1 The head-up display device provided by the utility model has the advantages of reducing the use of components such as back adhesive or bolts, reducing production cost, protecting the environment, forming a limiting structure through the installation protrusion, facilitating operation, quickly and accurately installing the diffusion film on the support, reducing operation difficulty and improving installation speed.

[0017] Figure 2 The head-up display device provided by the utility model has the advantages of reducing the use of components such as back adhesive or bolts, reducing production cost, protecting the environment, forming a limiting structure through the installation protrusion, facilitating operation, quickly and accurately installing the diffusion film on the support, reducing operation difficulty and improving installation speed.

[0018] Figure 3 The head-up display device provided by the utility model has the advantages of reducing the use of components such as back adhesive or bolts, reducing production cost, protecting the environment, forming a limiting structure through the installation protrusion, facilitating operation, quickly and accurately installing the diffusion film on the support, reducing operation difficulty and improving installation speed.

[0019] Figure 4 The head-up display device provided by the utility model has the advantages of reducing the use of components such as back adhesive or bolts, reducing production cost, protecting the environment, forming a limiting structure through the installation protrusion, facilitating operation, quickly and accurately installing the diffusion film on the support, reducing operation difficulty and improving installation speed.

[0020] Figure 5 The head-up display device provided by the utility model has the advantages of reducing the use of components such as back adhesive or bolts, reducing production cost, protecting the environment, forming a limiting structure through the installation protrusion, facilitating operation, quickly and accurately installing the diffusion film on the support, reducing operation difficulty and improving installation speed. Figure 4 The head-up display device provided by the utility model has the advantages of reducing the use of components such as back adhesive or bolts, reducing production cost, protecting the environment, forming a limiting structure through the installation protrusion, facilitating operation, quickly and accurately installing the diffusion film on the support, reducing operation difficulty and improving installation speed.

[0021] Icon: 100 - support; 200 - diffusion film; 300 - imaging screen; 201 - mounting protrusion; 101 - fixed slot; 102 - slot hole; 103 - first mounting surface; 104 - second mounting surface; 400 - adhesive assembly; 500 - fixed cover plate; 600 - backlight assembly; 601 - light source; 602 - light bar; 603 - Fresnel lens; 604 - polarizing film. DETAILED DESCRIPTION

[0022] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0023] In the description of the present application, it should be noted that the positions or location relationships indicated by the terms "inner", "outer" and the like are based on the positions or location relationships shown in the drawings, or the positions or location relationships in which the products of the present application are usually placed, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated devices or elements must have a particular position, be constructed and operated in a particular position, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "set", "connected" should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be directly connected, or indirectly connected through an intermediate medium; can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0025] Please refer to Figure 1 The embodiment provided by the present embodiment provides a kind of vehicle-mounted head-up display device, it includes: support 100, diffusion film 200 and imaging screen 300, first mounting slot is set on support 100, imaging screen 300 is fixed in mounting slot, diffusion film 200 is set between imaging screen 300 and support 100, installation protrusion 201 is respectively set on the opposite sides of diffusion film 200, corresponding fixed slot 101 is set on support 100, installation protrusion 201 is one-to-one and is set in fixed slot 101.

[0026] The support 100 is a hollow square frame structure, one side of the support 100 is provided with a first mounting groove, the first mounting groove is matched in size and shape with the imaging screen 300, and the imaging screen 300 is fixedly arranged in the first mounting groove. The diffusion film 200 is fixed between the support 100 and the imaging screen 300. Specifically, the diffusion film 200 is provided with one or more mounting protrusions 201 on opposite sides, and the support 100 is correspondingly provided with the same number of fixed insertion grooves 101, the mounting protrusions 201 on the two sides of the diffusion film 200 are clamped in the fixed insertion grooves 101, so as to install and fix the diffusion film 200 on the support 100. By installing the diffusion film 200 through the mounting protrusions 201 cooperating with the fixed insertion grooves 101, the use of components such as back glue or bolts can be reduced, the production cost can be reduced, the environment can be protected, the mounting protrusions 201 form a limiting structure, the operation is convenient, the diffusion film 200 can be quickly and accurately installed on the support 100, the operation difficulty is reduced, and the installation rate is improved.

[0027] Optionally, in some possible embodiments, the support 100 is provided with a second mounting groove matched in size and shape with the diffusion film 200, an insertion groove hole 102 communicating with the fixed insertion groove 101 is formed at the edge of the second mounting groove, the diffusion film 200 is arranged in the second mounting groove, and the mounting protrusion 201 passes through the insertion groove hole 102 and is clamped in the fixed insertion groove 101.

[0028] Please refer to Figure 1 The support 100 is provided with a second mounting groove, and the diffusion film 200 is fixed in the second mounting groove. The side wall of the second mounting groove limits the diffusion film 200, so that the diffusion film 200 does not shake. The second mounting groove is provided with an insertion groove hole 102 at the convenient position, the insertion groove hole 102 corresponds to the position of the fixed insertion groove 101 and communicates with the fixed insertion groove 101. The mounting protrusion 201 passes through the insertion groove hole 102 and extends in the fixed insertion groove 101, so as to achieve the fixing effect and avoid the diffusion film 200 from falling off or tilting. The current diffusion film 200 is usually made of plastic material and has a certain deformation ability. Please refer to Figure 2 and Figure 3As shown, the mounting protrusion 201 on one side of the diffusion film 200 is inserted into the fixed slot 101 from the insertion hole on one side of the second mounting slot during installation, and then the diffusion film 200 is bent to align the mounting protrusion 201 on the other side of the diffusion film 200 with the insertion hole 102 on the other side of the second mounting slot. At this time, the diffusion film 200 is loosened, and the diffusion film 200 automatically restores to a flat state under the action of its own elastic force, and the mounting protrusion 201 on the other side is automatically inserted into the corresponding fixed slot 101, thereby completing the installation of the diffusion film 200. Since the distance between the mounting protrusions 201 on both sides of the diffusion film 200 is greater than the distance between the insertion holes 102 on both sides of the second mounting slot, the mounting protrusions 201 cooperate with the fixed slots 101 to limit the diffusion film 200 after the installation of the diffusion film 200, thereby ensuring the stability of the diffusion film 200. When the diffusion film 200 needs to be disassembled, the mounting protrusions 201 can be removed from the fixed slots 101 by bending the diffusion film 200, thereby facilitating the operation, eliminating the need to clean the residual adhesive, and facilitating replacement, maintenance, and secondary use.

[0029] Optionally, in some possible embodiments, the bottom wall of the second mounting slot has a first mounting surface 103 abutting against the edge of the diffusion film 200, and the interior of the mounting slot has a second mounting surface 104 abutting against the mounting protrusion 201, and the second mounting surface 104 and the second mounting surface 104 are respectively located on opposite sides of the diffusion film 200.

[0030] As shown in Figure 4 and Figure 5 , the side of the diffusion film 200 away from the imaging screen 300 is the light entrance surface, and the side close to the imaging screen 300 is the light exit surface. After the diffusion film 200 is arranged in the second mounting slot, the edge of the light entrance surface of the diffusion film 200 abuts against the bottom wall of the second mounting slot, and the bottom wall of the second mounting slot forms the first mounting surface 103. The first mounting surface 103 abuts against the edge of the diffusion film 200, thereby limiting and protecting the diffusion film 200, avoiding the bending deformation of the diffusion film 200 affecting the use effect, and also protecting the edge of the diffusion film 200, thereby avoiding damage to the edge of the diffusion film 200. After the mounting protrusion 201 is inserted into the fixed slot 101, the light exit surface side of the mounting protrusion 201 abuts against the second mounting surface 104 in the mounting slot, and the first mounting surface 103 and the second mounting surface 104 abut against the light entrance surface and the light exit surface of the diffusion film 200, respectively, thereby forming a clamping effect and fixing the diffusion film 200, thereby ensuring the stability of the diffusion film 200 after installation.

[0031] Optionally, in some possible embodiments, the second mounting surface 104 protrudes from the first mounting surface 103 toward the side of the diffusion film 200 away from the first mounting surface 103, so that the mounting protrusion 201 is clamped and arranged between the first mounting surface 103 and the second mounting surface 104.

[0032] As shown in Figure 1As shown, the second mounting surface 104 protrudes from the first mounting surface 103 away from the side of the diffusion film 200, so that the first mounting surface 103 and the second mounting surface 104 are staggered and form a gap. Since the diffusion film 200 has a certain elasticity, it allows a certain deformation. Please refer to Figure 4 As shown, when the mounting protrusion 201 is inserted into the fixing slot 101 and abuts against the second mounting surface 104, it will not be damaged but will be deformed. After the diffusion film 200 is installed, the mounting protrusion 201 always abuts against the second mounting surface 104 under the action of its own elasticity, and at the same time, the body of the diffusion film 200 always abuts against the first mounting surface 103 under the action of its own elasticity to form a pre-tightening effect, which ensures the stability of the diffusion film 200 and avoids the diffusion film 200 from shaking during use.

[0033] Optionally, in some possible embodiments, the imaging screen 300 is provided with a pasting assembly 400, and the imaging screen 300 is connected with the support 100 through the pasting assembly 400.

[0034] Please refer to Figure 1 , the imaging screen 300 and the support 100 are provided with the pasting assembly 400, and the imaging screen 300 can be detachably connected with the support 100 in a pasting manner.

[0035] Optionally, in some possible embodiments, the imaging screen 300 can also be connected with the support 100 through a fixing bolt or a fixing buckle and the like.

[0036] Optionally, in some possible embodiments, the opening of the first mounting slot is provided with a fixing cover plate 500, the fixing cover plate 500 is detachably connected with the support 100, and the fixing cover plate 500 is used for fixing the imaging screen 300. At the same time, the fixing cover plate can be used to shield the area outside the imaging screen display imaging picture, prevent the occurrence of internal stray light, and ensure the imaging effect.

[0037] Please refer to Figure 1 As shown, one side of the support 100 is formed with an opening, which facilitates the installation of the imaging screen 300 in the first mounting slot. After the imaging screen 300 is connected with the support 100 through the pasting assembly 400 or other structures, the fixing cover plate 500 is arranged on the side of the opening. The imaging screen 300 is installed between the fixing cover plate 500 and the support 100, the fixing cover plate 500 can prevent the imaging screen 300 from falling off, and at the same time, can protect the imaging screen 300, improve the use safety and service life of the imaging screen 300. The fixing cover plate 500 can also cooperate with the support 100 to play a packaging effect, and reduce the occurrence of internal stray light.

[0038] Optionally, in some possible embodiments, the connection between the diffusion film 200 and the support 100 is provided with an auxiliary fixing member, which is used for connecting the diffusion film 200 and the support 100.

[0039] The auxiliary fixing member can be a fixing bolt or an adhesive backing. It should be noted that in the embodiment, the diffusion film 200 is connected to the support 100 through the mounting protrusion 201, and the auxiliary fixing member only plays an auxiliary role of avoiding shaking of the diffusion film 200. Therefore, a small amount of adhesive backing or fixing bolt can be used for connection, thereby reducing the production cost.

[0040] Optionally, in some possible embodiments, the vehicle-mounted head-up display device further comprises a backlight assembly 600, the backlight assembly 600 is connected to the support 100 of the vehicle-mounted head-up display device, and the backlight assembly 600 is located on the side of the diffusion film 200 away from the imaging screen 300. The light emitted by the backlight assembly 600 is projected after sequentially passing through the diffusion film 200 and the imaging screen 300.

[0041] Please refer to FIG. 6. Figure 1 As shown in FIG. 6, the backlight assembly 600 is arranged on the side of the diffusion film 200 away from the imaging screen 300. The backlight assembly 600 is used to emit backlight. The light first forms a uniform area light source 601 after passing through the diffusion film 200, and then forms an image after passing through the imaging screen 300 and projects the image on the required position. The finally formed image can be changed by adjusting the imaging screen 300, thereby displaying the required information.

[0042] Optionally, in some possible embodiments, the backlight assembly 600 comprises a light source 601, a light rod 602, and a Fresnel lens 603. The light-in end of the light rod 602 is connected to the light source 601, the Fresnel lens 603 is arranged on the light-out end of the light rod 602, and the light-out end of the light rod 602 is connected to the support 100.

[0043] Please refer to FIG. 6. Figure 1 As shown in FIG. 6, the light rod 602 is a hollow prism structure formed by sequentially connecting four trapezoidal side plates, and has an open end larger than the other end. The end with the smaller opening is the light-in end and is connected to the light source 601. The end with the larger opening is the light-out end and is connected to the diffusion film 200 and the imaging screen 300 and other components. The function of the light rod 602 is to converge and guide the light emitted by the light source 601, and then shrink the light to the angle required by the light path design while increasing the light diffusion area. The inner surface of the light rod 602 can be coated with a high-reflectivity film layer. The light can be reflected multiple times within the structure, making the light emitted by the light source 601 more uniform and soft. The function of the Fresnel lens 603 is to further compress and homogenize the light emitted by the light source 601 and the light reflected by the light rod 602, thereby improving the optical efficiency of the backlight. The Fresnel lens 603 can be injection-molded from a transparent material. One side of the lens surface is a light surface, and the other side is a concentric circle from small to large. Compared with ordinary spherical lenses, the Fresnel lens 603 has the advantages of smaller volume, lighter weight, larger aperture, and much lower cost than ordinary convex lenses.

[0044] Optionally, in some possible embodiments, the Fresnel lens 603 is further provided with a polaroid 604 away from one side of the light bar 602. The polaroid 604 controls the polarization direction of the light beam, reduces the interference of glare and reflected light, and thus improves the imaging effect.

[0045] It should be noted that the features in the embodiments of the present application can be combined with each other without conflict.

[0046] The above is only the preferred embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A head-up display device for a vehicle, characterized by comprising: The application relates to a vehicle-mounted head-up display device which comprises a support (100), a diffusion film (200) and an imaging screen (300), the support (100) is provided with a first mounting groove, the imaging screen (300) is fixed in the first mounting groove, the diffusion film (200) is arranged between the imaging screen (300) and the support (100), opposite sides of the diffusion film (200) are respectively provided with mounting protrusions (201), the support (100) is correspondingly provided with fixed insertion grooves (101), and the mounting protrusions (201) are correspondingly clamped in the fixed insertion grooves (101). The support (100) is provided with a second mounting groove which is matched with the size and shape of the diffusion film (200), insertion groove holes (102) which are communicated with the fixed insertion grooves (101) are formed at the edges of the second mounting groove, the diffusion film (200) is arranged in the second mounting groove, and the mounting protrusions (201) are clamped in the fixed insertion grooves (101) through the insertion groove holes (102).

2. The head-up display apparatus according to claim 1, characterized by The bottom wall of the second mounting groove is provided with a first mounting surface (103) which abuts against the edges of the diffusion film (200), the inside of the second mounting groove is provided with a second mounting surface (104) which abuts against the mounting protrusions (201), and the first mounting surface (103) and the second mounting surface (104) are respectively located at the opposite sides of the diffusion film (200).

3. The head-up display apparatus according to claim 2, characterized by The second mounting surface (104) is protruded from the first mounting surface (103) towards the side of the first mounting surface (103) which is away from the diffusion film (200), so that the mounting protrusions (201) are clamped between the first mounting surface (103) and the second mounting surface (104).

4. The head-up display apparatus according to claim 3, characterized by The imaging screen (300) is provided with a sticking assembly (400), and the imaging screen (300) is connected with the support (100) through the sticking assembly (400).

5. The head-up display apparatus according to claim 1, characterized by A fixed cover plate (500) is arranged at the opening of the first mounting groove, the fixed cover plate (500) is detachably connected with the support (100), and the fixed cover plate (500) is used for fixing the imaging screen (300).

6. The head-up display apparatus according to claim 1, characterized by The vehicle-mounted head-up display device further comprises a backlight assembly (600), the backlight assembly (600) is connected with the support (100) of the vehicle-mounted head-up display device, the backlight assembly (600) is located at the side of the diffusion film (200) which is away from the imaging screen (300), and the light emitted by the backlight assembly (600) is projected after sequentially passing through the diffusion film (200) and the imaging screen (300).

7. The head-up display apparatus according to claim 1, characterized by The backlight assembly (600) comprises a light source (601), a light rod (602) and a Fresnel lens (603), the light inlet end of the light rod (602) is connected with the light source (601), the Fresnel lens (603) is arranged at the light outlet end of the light rod (602), and the light outlet end of the light rod (602) is connected with the support (100).

8. The head-up display apparatus according to claim 7, characterized by The side of the Fresnel lens (603) which is away from the light rod (602) is further provided with a polaroid (604).

9. The head-up display apparatus according to claim 8, characterized by ​

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