JP2019188897A - Cover for vehicle display unit and vehicle display device - Google Patents

Abstract

To provide a cover for a vehicle display unit capable of properly protecting the display unit, and a vehicle display device.SOLUTION: A cover 1 for a vehicle display unit comprises: a light-transmissive plate-like base material 10; a hydrophilic moth-eye film 11 provided on a principal surface of the base material 10 and on a principal surface 111 positioned on a display unit side installed in a vehicle; and a water-repellent moth-eye film 12 provided on the principal surface of the base material 10 and on a second principal surface 121 positioned on the opposite side from the side of the first principal surface 111. With the cover 1 for the vehicle display unit, low reflectivity can be obtained, antifouling properties, excoriation resistance, and wiping properties can be obtained, and a display unit 2 can be properly protected. Further, the cover 1 for the vehicle display unit may be in any shape, so a short-length hood 3 which protrudes to the side of a driver D as compared with a hood 3A shown by an alternate long and short dash line can be employed or may be omitted, and the display unit 2 may be reduced in thickness.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a vehicle display cover and a vehicle display device.

  As a conventional vehicle display cover, for example, Patent Document 1 discloses a protective cover member in which low-reflection portions are provided on both surfaces of a translucent substrate.

Japanese Patent Laying-Open No. 2006-45251

  By the way, the vehicle display cover described in Patent Document 1 described above is limited in the mounting position of the cover, and there is room for improvement in terms of protecting the display more appropriately.

  This invention is made | formed in view of the above, Comprising: It aims at providing the cover for vehicle indicators and vehicle display apparatus which can protect a indicator appropriately.

  In order to solve the above-described problems and achieve the object, a vehicle display cover according to the present invention is a plate-like base material having light permeability, a main surface of the base material, and installed in a vehicle. A first moth-eye film having hydrophilicity provided on a first main surface located on the display side, and a second main surface located on a side opposite to the first main surface side of the base material. And a second moth-eye film having water repellency.

  In the vehicle display cover, the base material may be flat.

  In order to solve the above-described problems and achieve the object, a vehicle display device according to the present invention includes a display that displays vehicle information about a vehicle on a display surface, and a vehicle that is provided on the display and protects the display surface. The vehicle display cover is provided with a plate-like base material having light permeability and a hydrophilic surface provided on a first main surface which is a main surface of the base material and is located on the display side. And a second moth-eye film having a water repellency provided on a second main surface which is a main surface of the base material and opposite to the first main surface side.

  The vehicle display cover and the vehicle display device according to the present invention have an effect that the display can be properly protected.

FIG. 1 is a diagram illustrating a positional relationship between equipment in a vehicle and a driver. FIG. 2 is a cross-sectional view of the vehicle display cover according to the present embodiment. FIG. 3 is a view showing the arrangement of the vehicle display cover of the comparative example. FIG. 4 is a view showing the arrangement of the vehicle display cover of the comparative example. FIG. 5 is a view showing the arrangement of the vehicle display cover of the comparative example. FIG. 6 is a diagram for explaining the effect of the vehicle display cover according to the present embodiment.

  Embodiments according to the present invention will be described below in detail with reference to the drawings. In addition, this invention is not limited by this embodiment. In addition, constituent elements in the following embodiments include those that can be easily replaced by those skilled in the art or those that are substantially the same.

[Embodiment]
FIG. 1 is a diagram illustrating a positional relationship between equipment in a vehicle and a driver. FIG. 1 shows the positional relationship between the vehicle display device 100 and the driver D.

  As shown in FIG. 1, a hood 3 </ b> A is disposed in the vicinity of the windshield 4 of the vehicle V. A vehicle display device 100 is disposed inside the hood 3A. The vehicle display device 100 is mounted on, for example, an instrument panel provided on the dashboard of the vehicle V, and displays vehicle information related to the vehicle V.

  The vehicle display device 100 includes a display 2 and a vehicle display cover 1. The vehicle indicator cover 1 is provided on the display surface 2A side of the indicator 2, that is, the side visually recognized by the driver D in the vehicle V (hereinafter referred to as the driver D side). A steering wheel 5 and a steering column 6 are provided in the vicinity of the hood 3A.

  The indicator 2 is installed in the vehicle V and displays vehicle information on the display surface 2A. The vehicle information displayed on the display 2 includes, for example, the speed of the vehicle V, the output rotational speed of the driving power source, the accumulated traveling distance, the cooling water temperature, the remaining amount of fuel, the battery charge amount, and various warning lights (warnings). Lamp, so-called tell tale), shift position, direction indication direction, navigation information, and the like. The display 2 includes, for example, various analog instruments, digital instruments, an image display device, an LED (Light Emitting Diode) display, and the like, and displays the vehicle information on a display surface 2A configured by these. The vehicle display cover 1 is provided on the display 2 and protects the display surface 2A. Hereinafter, the vehicle display cover 1 will be described in detail with reference to FIG.

  FIG. 2 is a cross-sectional view of the vehicle display cover 1 according to the present embodiment. As shown in FIG. 2, the vehicle display cover 1 includes a base material 10, a film 11, and a film 12. The base material 10 has optical transparency. The base material 10 is plate-shaped. Here, the base material 10 has a flat plate shape. The substrate 10 may be either transparent or translucent as long as it transmits light. The substrate 10 may be formed of a translucent resin material such as white, red, blue, and green as long as it transmits light. In addition, flat form is not only the case where the 1st main surface 110 of the base material 10 and the 2nd main surface 120 of the base material 10 are parallel, but has slightly curved and the 1st main surface 110 and the 2nd main surface. A case where the surface 120 is not parallel or a case where the surface 120 is not parallel is also included.

  The film 11 and the film 12 are provided on different main surfaces of the substrate 10. The film 11 is a first moth-eye film having a moth-eye structure. The film 12 is a second moth-eye film having a moth-eye structure. The moth-eye film is a low reflection film having nano-level irregularities formed on the surface. Low reflection is a function of reducing light reflection, and includes a case where light is not reflected at all.

  The film 11 and the film 12 are, for example, films obtained by transferring a moth-eye shape to a UV (ultraviolet) curable resin by a nano-implant technique. The UV curable resin of the films 11 and 12 contains an antifouling component. The UV curable resin is a resin that cures when irradiated with ultraviolet rays.

  In this example, the film 11 is bonded to the first main surface 110 which is the main surface of the base material 10 and is located on the display 2 side. And the film 11 of this embodiment is a moth-eye film which has hydrophilicity. The surface of the vehicle display cover 1 to which the film 11 is bonded becomes the first main surface 111 disposed on the display 2 side installed in the vehicle V. That is, the first main surface 110 is the main surface of the substrate 10, and the first main surface 111 is the main surface of the vehicle display cover 1.

  In this example, the film 12 is bonded to the second main surface 120 which is the main surface of the substrate 10 and is located on the opposite side to the first main surface 110 side. And the film 12 of this embodiment is a moth-eye film having water repellency. The surface of the vehicle display cover 1 to which the film 12 is bonded becomes the second main surface 121 disposed on the driver D side in the vehicle V. That is, the 2nd main surface 120 is a main surface of the base material 10, and the 2nd main surface 121 is a main surface of the cover 1 for vehicle indicators.

  The film 11 is more hydrophilic than the film 12. The film 12 has more water repellency than the film 11. The angle at which the surface of the film and the water droplet contact (that is, the contact angle) is smaller in the film 11 than in the film 12. The contact angle between the surface of the film and the water droplet is larger in the film 12 than in the film 11. The film 11 has a contact angle of, for example, 40 degrees or less. The film 12 has a contact angle of, for example, 90 degrees or more.

  Here, in order to realize a low reflection function, an AR (Anti-Reflection) film may be used. The AR film is a film that reduces reflected light by utilizing a light interference effect. However, the AR film is manufactured by, for example, coating the surface of the base film with a multilayer of an inorganic dielectric thin film. Since the AR film includes a multi-layer coating process in the manufacturing process, the cost may increase. On the other hand, if the film 12 having a moth-eye structure is used, the manufacturing process does not include a multi-layer coating process, and thus low reflectivity may be realized at a lower cost than when an AR film is used.

  By the way, in the positional relationship shown in FIG. 1, when the vehicle display cover 1 does not have a low reflection function, reflected light A1 that reflects outside light and enters the field of view of the eye E of the driver D, and the driver D The reflected light B1 that is reflected on the vehicle display cover 1 and enters the field of view of the eyes E of the driver D can be considered. Here, in order to reduce the influence of the reflected light A1 and the reflected light B1 on the visibility of the driver D, a vehicle display cover having a curved surface on the driver D side may be employed.

  3 to 5 are diagrams showing the arrangement of the vehicle display cover 1A of the comparative example. As shown in FIG. 3, the vehicle indicator cover 1 </ b> A is curved and has a curved surface W on the driver D side. As a result, as shown in FIG. 4, the external light A <b> 2 is not reflected by the curved surface W of the vehicle display cover 1 </ b> A and does not enter the eyes E of the driver D. For this reason, the external light A2 is not reflected by the vehicle display cover 1A and does not enter the field of view of the eyes E of the driver D. Further, as shown in FIG. 5, the light B2 from the clothes 7 of the driver D or the objects around the driver D is reflected by the curved surface W of the vehicle display cover 1A of the comparative example, and the eyes E of the driver D Proceed in a direction not incident on. For this reason, the light B2 from the clothes 7 of the driver D or objects around the driver D is not reflected by the vehicle display cover 1A and does not enter the field of view of the eyes E of the driver D.

  However, when the vehicle display cover 1A of the comparative example shown in FIGS. 3 to 5 is arranged, the hood 3A protrudes to the driver D side because there is a curved surface W on the driver D side. For this reason, the curved surface W of the vehicle display cover 1A of the comparative example is a restriction in designing the instrument panel.

  In contrast to the comparative example shown in FIGS. 3 to 5, FIG. 6 is a diagram for explaining the effect of the vehicle display cover 1 according to the present embodiment. As shown in FIG. 6, the base material 10 of the vehicle display cover 1 according to the present embodiment has a flat plate shape. The vehicle display cover 1 is disposed so that the first main surface 111 having hydrophilicity due to the moth-eye structure faces the display 2 side. The vehicle display cover 1 is disposed such that the second main surface 121 having water repellency due to the moth-eye structure faces the driver D side.

  As a result, since the first main surface 111 and the second main surface 121 have a low reflectivity due to the moth-eye structure, the vehicle display cover 1 is highly visible to the driver D even if the base material 10 is flat. It can prevent reflection of light that has an adverse effect. For this reason, the vehicle display cover 1 is not limited in its shape, and a free shape can be adopted. Therefore, as shown in FIG. 6, the hood 3 having a short length projecting toward the driver D compared to the hood 3 </ b> A indicated by the alternate long and short dash line is adopted, the hood 3 is omitted, or the thickness of the display 2 is reduced. You can do it. For this reason, the freedom degree of design of an instrument panel can be raised. As described above, by employing the vehicle display cover 1, it is possible to contribute to a novel design of the instrument panel and provide an attractive product to the user.

  In addition, the vehicle display cover 1 includes a second main surface 121 having water repellency by a moth-eye structure. Since the UV curable resin of the film 12 contains an antifouling component, the film 12 has antifouling properties, wiping properties such as fingerprints, and scratch resistance. The antifouling property is a property in which dirt is difficult to adhere. Scratch resistance is a property that prevents scratches even when rubbed. The wiping property is a property that can withstand a wiping operation by a driver or the like. Thus, since the vehicle display cover 1 can realize antifouling properties, scratch resistance, and wiping properties, the vehicle display cover 1 can appropriately protect the display 2.

  On the other hand, the vehicle display cover 1 includes a first main surface 111 having hydrophilicity by a moth-eye structure. The first main surface 111 arranged on the display device 2 side installed in the vehicle V may be printed. For example, in order to hide a portion unnecessary for visual recognition of the driver D, black printing for hiding the periphery of the display device 2 or decorative printing for design may be performed. Even in such a case, since the first main surface 111 has hydrophilicity, the ink adheres and the above printing can be performed satisfactorily. That is, the vehicle display cover 1 has good ink adhesion, and can be printed easily.

  As described above, in the vehicle display cover 1, the first main surface 111 and the second main surface 121 have low reflectivity by the moth-eye structure, and the first main surface 111 has hydrophilicity by the moth-eye structure, and the second main surface. Since 121 has a structure having water repellency due to the moth-eye structure, it is possible to realize antifouling properties, scratch resistance, wiping properties, and printability, so that the display 2 can be appropriately protected.

  In addition, since there is no restriction | limiting in the shape of the cover 1 for vehicle indicators, the base material 10 may be flat form as demonstrated with reference to FIG. 2, FIG. 6, and the base material 10 has a curved surface. It may be plate-shaped. Even if the base material 10 of the vehicle display cover 1 is curved, the same operation and effect as described above can be obtained.

DESCRIPTION OF SYMBOLS 1, 1A Vehicle display cover 2 Display 3, 3A Hood 4 Windshield 5 Steering wheel 6 Steering column 7 Clothes 10 Base material 11 Film (1st moth-eye film)
12 Film (second moth-eye film)
110, 111 1st main surface 120, 121 2nd main surface

Claims (3)

A plate-like base material having optical transparency;
A first moth-eye film having hydrophilicity provided on a first main surface located on a display side installed in a vehicle which is a main surface of the base material;
A vehicle display cover comprising: a second moth-eye film having a water repellency provided on a second main surface which is a main surface of the base material and located on a side opposite to the first main surface side.   The vehicle display cover according to claim 1, wherein the base material has a flat plate shape. An indicator for displaying vehicle information about the vehicle on the display surface;
A vehicle indicator cover provided on the indicator and protecting the display surface;
The vehicle indicator cover is
A plate-like base material having optical transparency;
A first moth-eye film that is provided on the first main surface located on the display side, which is the main surface of the base material, and has hydrophilicity;
A vehicle display device comprising: a second moth-eye film having a water repellency provided on a second main surface which is a main surface of the base material and located on a side opposite to the first main surface side.

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