Vehicle-mounted instrument assembly with diffusion film

Abstract

The utility model discloses a vehicle-mounted instrument assembly with a diffusion film, which comprises a cover plate, a plurality of characters are arranged on the inner wall of the cover plate, the diffusion film is arranged on a character area, the diffusion film comprises a PET (polyethylene terephthalate) base material, a first white ink coating is arranged on the upper surface of the PET base material, a silver oil ink layer is arranged on the lower surface of the PET base material, and a second white ink coating is arranged on the lower surface of the PET base material. A plurality of external expansion areas are arranged on the silver oil ink layer, and second white ink coatings are arranged in the external expansion areas. Due to the fact that the diffusion film is adopted, light rays mutually reflect light on the diffusion film, the characters far away from the LED end can receive more brightness, the display uniformity effect of the characters is improved, and excellent uniformity is achieved. Meanwhile, mirror reflection can be formed by utilizing the silver oil ink layer on the lower surface of the PET base material, so that the utilization rate of light rays is improved.

Description

Technical Field

[0001] The utility model relates to a vehicle instrument, and more precisely, to a vehicle instrument assembly with a diffusion film. Background Art

[0002] The vehicle instrument screen usually has markings P / R / N / D / M, and different lit characters represent different functions. On the existing cover plate, there is no silk-screened ink except for the characters, and the rest of the cover plate is pure black ink. Therefore, when the cover plate and the LED lamp core are not far enough apart, an uneven effect of uneven brightness of the markings will occur, seriously affecting the lighting effect of the characters P / R / N / M.

[0003] Chinese Utility Model Patent CN218728141U discloses a special-shaped screen backlight for a vehicle instrument with an LED variable pitch design, which is characterized in that: it includes a lower frame, an upper frame, a reflective sheet, an equal-point variable pitch light guide plate, a diffusion sheet, a brightness enhancement sheet, and a polarizing sheet. The reflective sheet, the equal-point variable pitch light guide plate, the diffusion sheet, the brightness enhancement sheet, and the polarizing sheet are stacked in sequence from bottom to top between the lower frame and the upper frame. A flexible circuit board is provided on the inner wall of the lower frame, and a plurality of LEDs are equidistantly arranged on the flexible circuit board; a limiting protrusion is provided on the top surface of the equal-point variable pitch light guide plate and close to the LED side, and limiting grooves are provided on the diffusion sheet, the brightness enhancement sheet, and the polarizing sheet corresponding to the limiting protrusion. The lower frame, the upper frame, the reflective sheet, the equal-point variable pitch light guide plate, the diffusion sheet, the brightness enhancement sheet, and the polarizing sheet are all in a B shape. The reflective sheet is provided with an upward vertical flange. A reflective strip is provided on the inner wall of the lower frame corresponding to the side of the equal-point variable pitch light guide plate away from the LED. One end of the equal-point variable pitch light guide plate close to the LED is recessed to form an installation groove, and a positioning groove is recessed in the center of the installation groove. The flexible circuit board is equidistantly provided with an even number of LEDs, and a positioning block is provided at the position between the middle two LEDs.

[0004] Obviously, this patent improves the light uniformity of the backlight through the equal-point variable pitch light guide plate, and further improves the installation firmness of each film through the provision of limiting protrusions on the equal-point variable pitch light guide plate, in order to be suitable for vehicle use. The side light design makes the backlight relatively thin and light, suitable for use in compact vehicles. The overall shape matches the dashboard design, effectively utilizing the space. The equal-point variable pitch light guide plate is used to improve the light uniformity of the backlight, and the dashboard can display information well without increasing the LED brightness. However, this structure still cannot solve the problem of uneven brightness of the existing vehicle instrument screen.

[0005] Chinese Utility Model Patent CN201720554609.2 discloses an automatic light-adjusting vehicle instrument, which includes a dashboard, a fastening ring, a connecting sleeve and a lamp group. A fastening ring is fixedly arranged on the outer ring of the dashboard. Three connecting sleeves are evenly and fixedly arranged on the fastening ring. The lamp group includes a strong light lamp and two weak light lamps. The strong light lamp is arranged in the middle of the upper side of the dashboard, and the weak light lamps are distributed at both ends of the bottom side of the dashboard. A dim light sensor is arranged on the fastening ring on the outer side of the dashboard. The dim light sensor is connected to the output end of a controller. The controller is connected to a lamp group adjusting switch. The lamp group adjusting switch is arranged on the inner side of the dashboard and is connected to the lamp group. The connecting sleeve includes an outer cylinder, a return spring, a limiting plate and a sleeve. A through hole is opened at the top end of the outer cylinder. The outer side of the outer cylinder is fixedly arranged on the outer side of the fastening ring. One end of the return spring is fixedly arranged at the inner bottom end of the outer cylinder, and the other end of the return spring is fixedly connected to a limiting plate. One end of the sleeve is fixed on the inner side of the limiting plate, and the other side of the sleeve is fixed on the inner bottom side of the outer cylinder. The sleeve includes a movable cylinder and a connecting rod. The connecting rod is sleeved and connected with the movable cylinder. A communication hole is opened at one end of the movable cylinder. A blocking plate is fixedly connected to both ends of the connecting rod. The area of the blocking plate is not less than the cross-sectional size of the communication hole. A through hole is opened at the connection part of the limiting plate and the sleeve. Both the strong light lamp and the weak light lamp are set as LED lamps. The power of the strong light lamp is greater than that of the weak light lamp. The sum of the lengths of the movable cylinder and the connecting rod is not greater than the height of the outer cylinder. The dim light sensor, the controller and the lamp group are all electrically connected to the vehicle power supply. Obviously, in this patent, by setting the lamp group to cooperate with the strong light lamp and the weak light lamp, the dashboard can be used normally under different light conditions, avoiding the phenomenon that the dashboard is not clearly observable due to the irradiation of strong light in the use of a single-layer lamp, and reducing the occurrence of accidents. By evenly arranging three connecting cylinders on the fastening ring on the outer side of the dashboard and arranging a return spring inside the connecting cylinder, the shaking of the dashboard is slowed down by the return spring, so that after the dashboard is connected by screws, the loosening of the dashboard caused by the vibration of the vehicle is avoided. However, this structure still cannot solve the problem of uneven brightness of the existing vehicle instrument screen.

[0006] The Chinese utility model patent CN218273846U discloses a display device. The display device includes a cover plate, a display panel, optical film sheets, a light guide plate, a PCB board, a bracket and a rear cover. The display panel is an independent component and is connected to the PCB board through a connecting member. The display panel is directly attached to the inner side of the cover plate by means of optical glue. The display panel is only restricted by the optical glue. The cover plate, the PCB board and the rear cover are fixed on the bracket. There is one or more display panels, and each display panel corresponds to a corresponding optical film sheet, light guide plate and PCB board. The PCB board is provided with a controller, a backlight source and a driving circuit, or the PCB board is provided with a controller, a decoder, a backlight source and a driving circuit, or the PCB board is provided with a decoder, a backlight source and a driving circuit. The connecting member is an FPC cable. The electronic device is a vehicle instrument or an infotainment system. Obviously, in this patent, the independent display panel is directly attached to the glass cover plate. Since the independent display panel itself has a relatively high brightness uniformity and the stress difference of each part during the attachment process is small, that is, the decrease in brightness uniformity caused by the attachment process is small, the final display device can obtain a relatively high brightness uniformity. However, this structure still cannot solve the problem of uneven brightness of the existing vehicle instrument screen. Summary of the Utility Model

[0007] Based on this, in view of the above technical problems, it is necessary to provide a vehicle instrument assembly with a diffusion film. The vehicle instrument assembly with a diffusion film includes a cover plate. A plurality of characters are provided on the inner wall of the cover plate. A diffusion film is provided on the character area. The diffusion film includes a PET substrate. A first white ink coating is provided on the upper surface of the PET substrate. A silver oil ink layer is provided on the lower surface of the PET substrate. A plurality of outer expansion areas are provided on the silver oil ink layer. A second white ink coating is provided in the outer expansion areas. Since the diffusion film is adopted, the light reflects each other on the diffusion film, so that the characters at the far LED end can receive more brightness, improving the display uniformity effect of the characters and having excellent uniformity. At the same time, by using the silver oil ink layer on the lower surface of the PET substrate, specular reflection can be formed to improve the utilization rate of light.

[0008] A vehicle instrument assembly with a diffusion film, characterized in that the vehicle instrument assembly with a diffusion film includes a cover plate. A plurality of characters are provided on the inner wall of the cover plate. A diffusion film is provided on the character area. The diffusion film includes a PET substrate. A first white ink coating is provided on the upper surface of the PET substrate. A silver oil ink layer is provided on the lower surface of the PET substrate. A plurality of outer expansion areas are provided on the silver oil ink layer. A second white ink coating is provided in the outer expansion areas.

[0009] As a preferred embodiment of the in-vehicle instrument assembly with a diffusion film provided by the present utility model, a number of hollow partitions are provided on the diffusion film, and the positions of the hollow partitions are adapted to the positions of the characters.

[0010] As a preferred embodiment of the in-vehicle instrument assembly with a diffusion film provided by the present utility model, the outer expansion area expands 3 mm to 5 mm relative to the characters.

[0011] As a preferred embodiment of the in-vehicle instrument assembly with a diffusion film provided by the present utility model, the outer expansion area expands 4 mm relative to the characters.

[0012] As a preferred embodiment of the in-vehicle instrument assembly with a diffusion film provided by the present utility model, the thickness of the PET substrate is 80 μm to 120 μm.

[0013] As a preferred embodiment of the in-vehicle instrument assembly with a diffusion film provided by the present utility model, the thickness of the PET substrate is 100 μm.

[0014] As a preferred embodiment of the in-vehicle instrument assembly with a diffusion film provided by the present utility model, a number of light guiding protrusions are provided on the inner wall of the hollow partition.

[0015] As a preferred embodiment of the in-vehicle instrument assembly with a diffusion film provided by the present utility model, the height of the light guiding protrusion is one third of the width of the hollow partition.

[0016] As a preferred embodiment of the in-vehicle instrument assembly with a diffusion film provided by the present utility model, the light guiding protrusion is triangular.

[0017] As a preferred embodiment of the in-vehicle instrument assembly with a diffusion film provided by the present utility model, the light guiding protrusion is arc-shaped.

[0018] In order to solve the above technical problems, the present utility model adopts the following technical solutions:

[0019] Compared with the prior art, the present utility model has the following beneficial effects: Due to the adoption of the diffusion film, the light reflects mutually on the diffusion film, so that the characters at the far LED end can receive more brightness, improving the display uniformity effect of the characters and having excellent uniformity. At the same time, by using the silver oil ink layer on the lower surface of the PET substrate, specular reflection can be formed to improve the utilization rate of light.

[0020] In addition, a number of hollow partitions can be provided on the diffusion film, and the positions of the hollow partitions are adapted to the position of the character S. By using the hollow partitions, the propagation of light of adjacent characters in the horizontal direction of the diffusion film can be greatly reduced, thereby further improving the uniformity of the character brightness.

[0021] In addition, a number of light guiding protrusions can be provided on the inner wall of the hollow partition. The height of the light guiding protrusion is one-third of the width of the hollow partition. The light guiding protrusion is triangular. By using the triangular light guiding protrusion, a local light condensing effect is achieved, which can further reduce the propagation of light in the horizontal direction of the diffusion film and further improve the uniformity of the character brightness. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the solutions in the present utility model, the following will briefly introduce the drawings required for use in the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0023] Figure 1 is a schematic structural diagram of a vehicle-mounted instrument assembly with a diffusion film according to the present utility model;

[0024] Figure 2 is a schematic structural diagram of a vehicle-mounted instrument assembly with a diffusion film according to the present utility model, showing the reverse side at this time;

[0025] Figure 3 is a schematic diagram of the hierarchical structure of the diffusion film of a vehicle-mounted instrument assembly with a diffusion film according to the present utility model;

[0026] Figure 4 is Figure 3 a schematic structural diagram of the diffusion film of the vehicle-mounted instrument assembly with a diffusion film in , showing another perspective at this time;

[0027] Figure 5 is a schematic structural diagram of another embodiment of the diffusion film of a vehicle-mounted instrument assembly with a diffusion film according to the present utility model;

[0028] Figure 6 is Figure 5 a detailed enlarged schematic diagram of area A of the diffusion film of the vehicle-mounted instrument assembly with a diffusion film in ;

[0029] The reference numerals in the drawings are explained as follows: 1, cover plate; 2, diffusion film; 20, hollow partition; 201, light guiding protrusion; 21, PET substrate; 22, first white ink coating; 23, silver ink layer; 24, outer diffusion area; S, character. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] To enable those skilled in the art to better understand the solution of the present utility model, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

[0031] As described in the background art, the in-vehicle instrument screen usually has markings P / R / N / D / M, and different characters lighting up indicate different functions. On the existing cover plate, except for the characters, no silk-screen ink is applied, and the rest of the cover plate is pure black ink. Therefore, when the cover plate and the LED lamp core are not far enough apart, an uneven effect of uneven brightness of the markings will occur, seriously affecting the lighting effect of the characters P / R / N / M.

[0032] To solve this technical problem, the present utility model provides an in-vehicle instrument assembly with a diffusion film, including a cover plate 1. A plurality of characters S are provided on the inner wall of the cover plate 1, and a diffusion film 2 is provided on the character area S. The diffusion film 2 includes a PET substrate 21. A first white ink coating 22 is provided on the upper surface of the PET substrate 21, a silver oil ink layer 23 is provided on the lower surface of the PET substrate 21, a plurality of outer expansion areas 24 are provided on the silver oil ink layer 23, and a second white ink coating 241 is provided in the outer expansion areas 24.

[0033] Through the above structural design, due to the adoption of the diffusion film, the light reflects off each other on the diffusion film, enabling the characters at the far LED end to receive more brightness, improving the display uniformity effect of the characters, and having excellent uniformity. At the same time, by using the silver oil ink layer 23 on the lower surface of the PET substrate 21, specular reflection can be formed to improve the utilization rate of light.

[0034] It should be noted that, without conflict, the embodiments in the present utility model and the features and technical solutions in the embodiments can be combined with each other.

[0035] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0036] Embodiment 1

[0037] As Figure 1 、 Figure 2 and Figure 3As shown in the figure, the vehicle instrument assembly with a diffusion film includes a cover plate 1. A number of characters S are provided on the inner wall of the cover plate 1. A diffusion film 2 is provided on the character area S. The diffusion film 2 includes a PET substrate 21. A first white ink coating 22 is provided on the upper surface of the PET substrate 21. A silver oil ink layer 23 is provided on the lower surface of the PET substrate 21. A number of outward expansion areas 24 are provided on the silver oil ink layer 23. A second white ink coating 241 is provided in the outward expansion areas 24.

[0038] It should be noted that the outward expansion area 24 expands outward by 3 mm to 5 mm relative to the character S. Preferably, the outward expansion area 24 expands outward by 4 mm relative to the character S.

[0039] In addition, the thickness of the PET substrate 21 is 80 μm to 120 μm. Preferably, the thickness of the PET substrate 21 is 100 μm.

[0040] The working mode of this embodiment will be described below.

[0041] Due to the adoption of the diffusion film, light reflects off each other on the diffusion film, enabling the characters at the far LED end to receive more brightness, improving the display uniformity effect of the characters, and having excellent uniformity. At the same time, by using the silver oil ink layer 23 on the lower surface of the PET substrate 21, specular reflection can be formed to improve the utilization rate of light.

[0042] Embodiment 2

[0043] As Figure 4 shown, a number of hollow partitions 20 are provided on the diffusion film 2. The positions of the hollow partitions 20 are adapted to the positions of the characters S.

[0044] The working mode of this embodiment will be described below.

[0045] By using the hollow partitions 20, the propagation of light between adjacent characters in the horizontal direction of the diffusion film can be greatly reduced, thereby further improving the uniformity of character brightness.

[0046] Embodiment 3

[0047] As Figure 5 and Figure 6 shown, a number of light guiding protrusions 201 are provided on the inner wall of the hollow partition 20.

[0048] It should be noted that the height of the light guiding protrusion 201 is one-third of the width of the hollow partition 20.

[0049] In addition, the light guiding protrusion 201 is triangular.

[0050] The working mode of this embodiment will be described below.

[0051] The light guide protrusion 201 using a triangle has a local light condensing effect, which can further reduce the propagation of light in the horizontal direction of the diffusion film and further improve the uniformity of character brightness.

[0052] The terms "coupling" and "coupled" involved in the embodiments of the present application should be understood in a broad sense. For example, it may refer to a direct physical connection or an indirect connection implemented through electronic devices, such as a connection implemented through resistors, inductors, capacitors or other electronic devices.

[0053] In the present utility model, unless otherwise clearly defined and limited, the terms "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral body; it may be a mechanical connection, an electrical connection or communication with each other; it may be directly connected or indirectly connected through an intermediate medium, and may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0054] Obviously, the above-described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The drawings show the preferred embodiments of the present application, but do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosed content of the present application more thorough and comprehensive. Although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing specific embodiments, or perform equivalent replacements for some of the technical features. Any equivalent structure directly or indirectly using the content of the specification and drawings of the present application in other related technical fields is equally within the scope of the patent protection of the present application.

Claims

1. A vehicle-mounted instrument assembly with a diffusion membrane, characterized in that: The vehicle-mounted instrument assembly with a diffusion film comprises a cover plate (1), a plurality of characters S are provided on the inner wall of the cover plate (1), a diffusion film (2) is provided on the character area S, the diffusion film (2) comprises a PET substrate (21), a first white ink coating (22) is provided on the upper surface of the PET substrate (21), a silver oil ink layer (23) is provided on the lower surface of the PET substrate (21), a plurality of outer expansion areas (24) are provided on the silver oil ink layer (23), and a second white ink coating (241) is provided in the outer expansion area (24).

2. The vehicle-mounted instrument assembly with a diffusion membrane according to claim 1, characterized in that: A plurality of hollow partitions (20) are provided on the diffusion film (2), and the positions of the hollow partitions (20) are adapted to the positions of the character S.

3. The vehicle-mounted instrument assembly with a diffusion membrane according to claim 1, characterized in that: The outward expansion area (24) is 3 mm to 5 mm outward relative to the character S.

4. The vehicle-mounted instrument assembly with a diffusion membrane according to claim 1, characterized in that: The outward expansion area (24) expands 4 mm relative to the character S.

5. The vehicle-mounted instrument assembly with a diffusion membrane according to claim 1, characterized in that: The thickness of the PET substrate (21) is 80 micrometers to 120 micrometers.

6. The vehicle-mounted instrument assembly with a diffusion membrane according to claim 5, characterized in that: The thickness of the PET substrate (21) is 100 micrometers.

7. The vehicle-mounted instrument assembly with a diffusion membrane according to claim 2, characterized in that: A plurality of light-guiding protrusions (201) are provided on the inner wall of the hollow partition (20).

8. The vehicle-mounted instrument assembly with a diffusion membrane according to claim 7, characterized in that: The height of the light-guiding protrusion (201) is one third of the width of the hollow partition (20).

9. The vehicle-mounted instrument assembly with a diffusion membrane according to claim 7, characterized in that: The light-guiding protrusion (201) is in a triangular shape.

10. The vehicle-mounted instrument assembly with a diffusion membrane according to claim 7, characterized in that: The light-guiding protrusion (201) is arc-shaped.

Images