JP2018144514A - Display device for vehicle and manufacturing method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device for vehicle having excellent appearance.SOLUTION: A display device for a vehicle mounted on a vehicle includes: a light source part for providing light; a translucent plate 30 forming a translucent plate shape provided with recessed parts 33 recessed from a plate surface 30b to illuminate side wall surfaces 35 of the recessed parts 33 by causing the light from the light source part to be made incident on insides through outer edge parts, brightening outlines of the recessed parts 33 to display information of a vehicle; and a translucent antireflection layer 60 formed with respect to the plate surface 30b to reduce the reflectivity of the light on the plate surface 30b.SELECTED DRAWING: Figure 6

Description

  The present disclosure relates to a vehicle display device that is mounted on a vehicle and displays vehicle information.

  2. Description of the Related Art Conventionally, a vehicle display device that is mounted on a vehicle and displays vehicle information is known. In Patent Document 1, in a vehicle display device, a plate-like shape having no dents or the like is formed on a plate surface, and a smoke film is provided on a light-transmitting light-transmitting plate (hereinafter referred to as a flat light-transmitting plate). It is disclosed.

  Further, in a light transmissive plate (hereinafter referred to as a concave light transmissive plate) different from the above light transmissive plate, a concave portion that is recessed from the plate surface is provided. On the plate surface provided with the concave portion, the base material of the concave translucent plate is exposed. The concave light-transmitting plate displays vehicle information by causing light from the light source part to enter the inside through the outer edge part and reflecting the light by the concave part.

JP 2006-121891 A

  The smoke film provided on the flat light-transmitting plate has a function of reducing the transmittance of light transmitted through the flat light-transmitting plate. However, the smoke film does not reduce the reflectance of the light incident on the flat translucent plate, so that the display is visually recognized twice by causing multiple reflection of the light incident on the flat translucent plate, The appearance of the device may be degraded.

  On the other hand, the base material is exposed in the concave light-transmitting plate. For example, when reflection of external light or light from the light source occurs on the surface of the concave light-transmitting plate, the reflected light is incident on the concave portion and further irregularly reflected on the concave portion. There is a concern that it will appear. In addition, for example, when light is reflected on a plate surface, there is a concern that a portion that is not originally intended to be displayed and that does not have a concave portion may appear brilliantly. Therefore, it could not be said that the appearance of the device was sufficient.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a vehicle display device having a good appearance.

One of the disclosed inventions is a vehicle display device mounted on a vehicle,
A light source unit (50) for providing light;
It forms a translucent plate shape provided with a concave portion (33) recessed from the plate surface (30b), and light from the light source portion enters the inside through the outer edge portion (32), whereby the side wall surface of the concave portion (35 ) Is illuminated, the translucent plate (30) displays the vehicle information by shining the outline of the recess,
A translucent antireflection layer (60) that is formed on the plate surface and reduces the reflectance of light on the plate surface.

  According to such a disclosure, the antireflection layer formed on the plate surface of the translucent plate reduces the reflectance of light on the plate surface. By suppressing the reflection of light on the plate surface, it is possible to suppress the occurrence of multiple reflections by the light incident on the translucent plate, thereby improving the visibility of the display and improving the appearance.

  More specifically, since the reflection of the plate surface provided with the concave portion is suppressed, the reflected light on the plate surface is prevented from entering the concave portion and being further irregularly reflected. It is prevented from shining. Further, when the contour by the side wall surface is illuminated by the light from the light source unit and the vehicle information is displayed, the light from the light source unit is suppressed from being reflected by the plate surface, so that the contour display is conspicuous. . Thus, the appearance of the vehicle display device can be improved.

Another one of the disclosed invention has a plate shape provided with a recess (33) recessed from the plate surface (30b), and has a translucent plate (30) having translucency,
An antireflection layer (60) formed on the plate surface and reducing the reflectance of light on the plate surface;
A method for manufacturing a display device for a vehicle, comprising: a hard light-transmitting layer (64) having a light-transmitting property and having a hardness higher than that of the anti-reflection layer between the plate surface and the anti-reflection layer,
A laminating step (S20) for laminating the antireflection layer and the hard translucent layer;
For the integrated antireflection layer and hard light-transmitting layer (91) laminated in the stacking step, the sticking step (S40) for sticking to the plate surface with the hard light-transmitting layer side facing the plate surface; including.

  According to such disclosure, the laminated antireflective layer and hard light-transmitting layer are integrally attached to the plate surface in a posture in which the hard light-transmitting layer and the plate surface provided with the recesses are opposed to each other. In such a method, since the hard light-transmitting layer whose hardness is higher than that of the antireflection layer is applied in a state of being substantially opposed to the concave portion, generation of bubbles or peeling due to the integral object being caught in the concave portion is suppressed. Is done. That is, since the antireflection layer can be beautifully applied along the plate surface, the appearance of the vehicle display device can be improved.

  In addition, the code | symbol in a parenthesis is not what was intended to limit the content of invention, only to illustrate the structure which respond | corresponds in embodiment mentioned later in order to make an understanding of description content easy.

It is a partial front view which shows the display apparatus for vehicles of one Embodiment. It is the II-II sectional view taken on the line of FIG. It is an enlarged view which expands and shows the III section of FIG. It is a figure for demonstrating the relationship between the light source part of FIG. 1, and a recessed part. 4 shows an enlarged front view of the periphery of the cross section on the upper side and a cross section on the lower side of the display translucent plate of FIG. 4, and (a) shows a cross section taken along the line VA-VA of FIG. 4 shows a cross section taken along line VB-VB. It is an expanded sectional view which expands and shows the cross section of the display translucent board in which the reflection preventing layer and hard translucent layer of one Embodiment were formed. It is a figure which shows schematic structure of the antireflection layer of FIG. It is a figure which shows schematic structure of the hard light transmission layer of FIG. It is a figure which expands and shows the IX part of FIG. It is a figure for demonstrating the printing process of FIG. 11 for forming the parameter | index formed in the hard light transmission layer of one Embodiment, and the said parameter | index. It is a flowchart which extracts and shows a part of manufacturing method of the display apparatus for vehicles in one Embodiment. It is a figure for demonstrating the sticking process of FIG. It is a figure for demonstrating the bubble removal process of FIG. It is a figure which shows the display apparatus for vehicles of the modification 1. It is a figure which shows the display translucent board in which the antireflection layer and the hard translucent layer of the modification 2 were formed.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  As shown in FIG. 1, a vehicle display device 100 according to an embodiment of the present invention is installed on an instrument panel that is mounted on a vehicle and faces a seat on which an occupant who views the device 100 is seated. The vehicle display device 100 can display vehicle information toward the viewing side where the occupant is located. A vehicle equipped with the vehicle display device 100 is, for example, a hybrid vehicle including both an engine and an electric motor as power sources.

  In the present embodiment, the upper and lower sides are defined with reference to a vehicle on a horizontal plane. The left and right are defined on the basis of a case where an occupant seated in the seat looks at the device from the front.

  As shown in FIG. 2, the vehicular display device 100 includes a case unit 10, a back side display unit 20, a display translucent plate 30, a light source unit 50, and the like.

  The case unit 10 includes a back case 12, a plate window 14, and a case translucent plate 16. The back case 12 is formed of, for example, a synthetic resin having a light shielding property, and covers the back side display unit 20 from the back side opposite to the viewing side. The plate window 14 is formed in a cylindrical shape having openings on the viewing side and the back side along the outer peripheral contour of the back side display unit 20 by using, for example, a synthetic resin having a light shielding property. The case translucent plate 16 is formed in a plate shape that closes the viewing-side opening of the plate window 14 with a semi-translucent resin such as a colored acrylic resin. Thereby, the entire surface of the display translucent plate 30 described later is covered from the viewing side by the case translucent plate 16.

  The back side display unit 20 includes a display plate 21 and a pointer unit 22. The display board 21 is also generally called a dial and is disposed between the back case 12 and the display translucent board 30. The display board 21 is formed in a flat plate shape, for example, by semi-translucent or light-shielding printing being partially applied to the surface on the viewing side of a base material made of a synthetic resin having translucency. In addition, it may replace with printing and the coating may be given.

  The light-shielding region by light-shielding printing or the like on the display board 21 is set to a dark color, particularly black, at a location facing the concave portion 33 so that display by the concave portion 33 of the display translucent plate 30 to be described later stands out. Although not shown, the light emitting element 26 arranged on the back side of the display plate 21 illuminates the light transmitting region and the semi-light transmitting region of the display plate 21, thereby displaying a background pattern on the display light transmitting plate 30. It is displayed on the plate 21.

  A plurality of pointer portions 22 are provided by being arranged in the right region and the left region of the display board 21, respectively. Here, since the two pointer portions 22 have the same configuration, the right pointer portion 22 will be described as a representative. The pointer portion 22 includes a plurality of stepping motors 23 and a plurality of pointers 24 and 25. Each stepping motor 23 is held on the main circuit board 18 disposed between the back case 12 and the display board 21, that is, on the back side of the display board 21.

  In the present embodiment, two pointers 24 are provided in one pointer portion 22. One of the hands 24 and 25 is a needle 24 for instructing the current value of the electric motor of the vehicle, and the other one is a needle 25 for instructing the temperature of the engine coolant.

  The pointer 24 integrally includes a connecting portion 24a and an instruction portion 24b. The connecting portion 24 a is disposed through a through hole formed in the display plate 21 and is connected to the rotating shaft 23 a of the stepping motor 23. The instruction unit 24b is disposed between the display plate 21 and the display translucent plate 30, that is, on the viewing side with respect to the display plate 21 and on the back side with respect to the display translucent plate 30, and has a needle shape. The pointer 24 is rotated in accordance with the output of the stepping motor 23, and vehicle information is displayed by instructing the concave portion 33 of the display translucent plate 30. The pointer 24 emits light when illuminated by a light emitting element 26 disposed on the back side of the display plate 21. The same applies to the pointer 25.

  The display translucent plate 30 is formed in a flat plate shape having a pair of plate surfaces 30a and 30b on both the viewing side and the back side, for example, of a synthetic resin having translucency. The display translucent plate 30 is disposed between the back side display unit 20 and the case translucent plate 16, and is provided substantially parallel to the display plate 21. The viewing side plate surface 30a faces the viewing side. The back side plate surface 30b faces the display plate 21 by facing the back side. The display translucent plate 30 is arranged so that the display on the back side display unit 20 can be transmissively displayed.

  The light source part 50 is provided in two places in total corresponding to the left and right outer edge parts 32 among the outer edge parts 32 of the display translucent plate 30 and provides light from the opposite directions. Here, since the two light source units 50 have the same configuration, the right light source unit 50 will be described as a representative. The light source unit 50 includes a plurality of light emitting elements 52 arranged along the outer edge portion 32 on the light source circuit board 19 provided along the outer edge portion 32. In the present embodiment, each light emitting element 52 employs a light emitting diode, and each light emitting element 52 emits light when connected to a power source. In particular, in the present embodiment, each light emitting element 52 is a multicolor light emitting diode, but the light emitting elements 52 in the same light source unit 50 emit light with substantially the same color and substantially the same luminance.

  Here, an outer edge member 70 as shown in FIG. 3 is provided between the light emitting element 52 of each light source unit 50 and the outer edge portion 32 of the display translucent plate 30. The outer edge member 70 integrally includes an outer edge light guide portion 72 and a light shielding portion 76 by two-color molding. The outer edge light guide part 72 is formed of, for example, a light-transmitting synthetic resin so that light from the light source part 50 can be guided. The outer edge light guide 72 has a plate facing surface 74 that faces the outer edge 32 of the display translucent plate 30 and a light source facing surface 73 that faces the light emitting element 52. The light source facing surface 73 and the plate facing surface 74 are each formed in a smooth flat shape.

  The light shielding part 76 is formed of, for example, an elastomer having a light shielding property, and has a cylindrical shape that surrounds the outer edge light guiding part 72 except for the facing surfaces 73 and 74. Thereby, when the light emitted from the light emitting element 52 is guided through the outer edge light guide part 72, it is difficult for the light shielding part 76 to leak outside. The light shielding portion 76 extends from the plate facing surface 74 toward the display translucent plate 30.

  The outer edge member 70 is sandwiched and held between the back case 12 and the plate window 14. Further, the display light transmitting plate 30 side end of the light shielding portion 76 sandwiches the display light transmitting plate 30, so that the outer edge member 70 holds the display light transmitting plate 30. Due to the flexibility of the elastomer of the light shielding portion 76, abnormal noise such as a collision sound between the display translucent plate 30 and the case portion 10 that can be generated according to the vibration of the vehicle is suppressed.

  In this way, each light source unit 50 causes light to enter the display translucent plate 30 through the outer edge portion 32. As shown in FIGS. 4 and 5, the display translucent plate 30 has a recess 33. In this embodiment, each recessed part 33 is dented from the back side plate surface 30b to the visual recognition side plate surface 30a side among a pair of plate surfaces 30a and 30b. Each concave portion 33 has a side wall surface 35 provided substantially perpendicularly to the back side plate surface 30b and a planar shape provided substantially parallel to both plate surfaces 30a, 30b at the bottom portion 36 connected to the side wall surface 35. And a bottom surface 37. Each recess 33 is formed in a size that allows the contour of the side wall surface 35 to be recognized by the occupant.

  The recess 33 is formed with such a contour by the side wall surface 35 so as to display vehicle information. The recess 33 forms a part of an index used for displaying vehicle information. Specifically, in the concave portion 33, corresponding to the pointers 24 and 25 of the pointer portion 22, scale concave holes 34 a and 34 b whose contours are formed in the shape of a scale as an index, and characters whose contour is an index. A plurality of character concave holes 34d formed in the shape of are included. Further, the concave portion 33 includes a concave groove 34e formed in an annular groove shape surrounding the scale concave hole 34a and the character concave hole 34d from the outer peripheral side.

  Among these, the scale concave holes 34a corresponding to the pointers 24 that indicate the current value of the electric motor are arranged concentrically with the rotating shaft 23a connected to the pointers 24 and in a partial annular shape, and are further arc-shaped. The arc portion connects the scales so that at least a portion is integrally formed. The scale concave hole 34b corresponding to the pointer 25 for instructing the temperature of the engine cooling water is also integrally formed by connecting the scales with arcuate arc portions.

  Each character concave hole 34d is arranged on the inner peripheral side of the scale concave hole 34a, and characters "PWR (abbreviation for POWER)", "ECO (abbreviation for ECOLOGY)" that accurately indicate the situation corresponding to the current value of the electric motor. "CHG (abbreviated symbol for CHARGE)", "OFF", or the letters "H (abbreviated symbol for HOT)" and "C (abbreviated symbol for COLD)" that accurately indicate the situation corresponding to the engine coolant temperature, It is formed by the contour.

  The light from the light source unit 50 that travels in the display translucent plate 30 along the extending direction of the display translucent plate 30 illuminates the side wall surface 35 of the recess 33. Thereby, the outline by the side wall surface 35 of the recessed part 33 shines, and the information of a vehicle is displayed. Here, since the scale concave holes 34a and 34b and the character concave hole 34d are surrounded by the concave groove 34e, a part of the light from the light source unit 50 is blocked by the concave groove 34e. Therefore, it is difficult for the light from the light source part 50 to be illuminated more than necessary on the side wall surfaces 35 of the scale concave holes 34a and 34b and the character concave hole 34d. And it is suppressed that the part arrange | positioned in the location close | similar to the light source part 50 among the scale concave holes 34a and 34b and the character concave hole 34d shines with a brightness | luminance higher than necessary.

  In particular, as shown in FIG. 5, the concave dimensions of the scale concave holes 34a and 34b and the character concave hole 34d are set larger than the thickness of an adhesive layer 68b described later (for example, several mm), and further away from the light source section 50. It is set so as to increase. By setting the dent size, the amount of illumination light on the side wall surface 35 of each scale concave hole 34a, 34b and each character concave hole 34d is adjusted, and each scale concave hole 34a, 34b and each character concave hole 34d shine. The brightness is relatively uniform.

  As shown in FIG. 6, among the plate surfaces 30a and 30b of the display translucent plate 30, the antireflection layer 60 and the hard translucent layer 64 are pasted on the back side plate surface 30b provided with the recess 33. Is formed. The antireflection layer 60 is disposed so as to be exposed on the back side, and the hard translucent layer 64 is disposed between the back side plate surface 30 b and the antireflection layer 60. The antireflection layer 60 and the hard translucent layer 64 are disposed so as to cover each recess 33. The hard translucent layer 64 is formed along the plate surface 30 b, and a space SP is formed between the side wall surface 35 and the bottom surface 37 of the recess 33.

  Further, an adhesive layer 68 a for bonding the antireflection layer 60 to the back side plate surface 30 b and the hard light transmission layer 64 is provided between the hard light transmission layer 64 and the antireflection layer 60. Further, an adhesive layer 68b for adhering the hard light-transmitting layer 64 to the back-side plate surface 30b is provided between the back-side plate surface 30b and the hard light-transmitting layer 64. For the adhesive layers 68a and 68b, for example, an optical clear adhesive having a thickness of about 50 μm or the like can be used.

  As shown in FIG. 7, the antireflection layer 60 is formed in a film film shape having a thickness of about 80 μm, for example, by laminating a dielectric film 62 on a transparent substrate 61. As the transparent base material 61, for example, a TAC (triacetylrose) base material is employed.

The dielectric film 62 is formed by laminating a plurality of thin films made of two or more kinds of optical materials having different refractive indexes. As an optical material for the thin film, for example, magnesium fluoride (MgF ₂ ), silicon oxide (SiO ₂ ), titanium oxide (TiO ₂ ), ITO (indyllium tin oxide), zirconia (ZrO ₂ ), niobium oxide (Nb ₂ O) ₂ ) etc. can be adopted. Each film thickness in each thin film is appropriately set so that the reflectance of visible light on the back side plate surface 30b side of the display translucent plate 30 is lower than that in the case where the plate surface 30b is exposed. The dielectric film 62 is disposed, for example, on the opposite side of the back-side plate surface 30b with the transparent substrate 61 interposed therebetween, but may be disposed on both sides of the transparent substrate 61. The antireflection layer 60 thus provided reduces the reflectance of light on the back side plate surface 30b.

  As shown in FIG. 8, the hard light-transmitting layer 64 is formed in a film film shape having a thickness of, for example, about 200 μm and thicker than the antireflection layer 60 by using a synthetic resin having a light-transmitting property, for example. The hard translucent layer 64 of the present embodiment is formed by sandwiching a PC base material 65 made of polycarbonate resin from both sides with a pair of PMMA base materials 66 made of acrylic resin. When the PC base material 65 is sandwiched between the PMMA base materials 66, high hardness can be easily realized, and it is possible to suppress the release of a diffused gas such as chlorobenzene from the PC base material 65 into the vehicle interior. it can. The hard translucent layer 64 is formed with a hardness higher than that of the antireflection layer 60. As the hardness in the present embodiment, Vickers hardness as indentation hardness can be adopted.

  As shown in FIG. 9 in an enlarged manner, the hard light-transmitting layer 64 extends along the back side plate surface 30b even at a location overlapping the concave portion 33 of the hard light-transmitting layer 64 by setting the hardness of the hard light-transmitting layer 64. Maintains a flat shape. The antireflection layer 60 also maintains a flat shape along the hard translucent layer 64.

  Moreover, the hard translucent layer 64 has a part of indicators used for displaying vehicle information. Specifically, an index is formed on the hard light transmitting layer 64 by printing on the surface of the hard light transmitting layer 64 facing the back side plate surface 30b. A red zone 64a is provided as an index so as to overlap with a part of the scale concave hole 34b corresponding to the indicator 25 indicating the temperature of the engine cooling water (see FIG. 10 for the red zone 64a). The red zone 64a has a semi-transparent red color, and alerts the occupant by being instructed by the pointer 24 when the temperature of the engine coolant becomes high. In addition, it may replace with printing and the coating may be given and the parameter | index may be formed in the surface facing the antireflection layer 60 of the hard translucent layer 64. FIG.

  In addition to the antireflection layer 60, an additional antireflection layer 69 is also formed on the viewing side plate surface 30 a that is formed flat without the concave portion 33 being provided among the plate surfaces 30 a and 30 b of the display translucent plate 30. ing. The additional antireflection layer 69 is configured in the same manner as the antireflection layer 60, and reduces the reflectance of light on the viewing side plate surface 30a. A hard light-transmitting layer is not provided between the viewing side plate surface 30a and the additional antireflection layer 69, and only an adhesive layer 68c for bonding the additional antireflection layer 69 to the viewing side plate surface 30a is provided. Therefore, the additional antireflection layer 69 is directly pasted and formed on the viewing side plate surface 30a.

  A method for manufacturing such a vehicle display device 100 will be described with reference to the flowchart of FIG. 11, particularly focusing on a method of forming the antireflection layer 60 and the hard light transmission layer 64 on the display light transmission plate 30.

  First, in the printing step S10, as shown in FIG. 10, a part of an index used for displaying vehicle information is printed and formed on a film film-like sheet in which a plurality of hard transmissive layers 64 are continuous. Specifically, a plurality of the above-described red zones 64 a are printed on the surface of the sheet 90.

  In the stacking step S20 after the printing step S10, the antireflection layer 60 and the hard translucent layer 64 are stacked. That is, a film film-like sheet in which a plurality of antireflection layers 60 are continuous is pasted on the printed sheet 90.

  In the cutting step S30 after the stacking step S20, a single display translucent plate 30 is formed by integrating a sheet 90 including a plurality of hard light-transmitting layers 64 and a sheet including a plurality of anti-reflection layers 60. Cut one sheet corresponding to. Specifically, in accordance with the size and shape of the display translucent plate 30, the two sheet integrals are cut by a press die and cut into one sheet.

  In the sticking step S40 after the cutting step S30, as shown in FIG. 12, one sheet of the antireflection layer 60 and the hard translucent layer 64 laminated in the lamination step S20 and cut in the cutting step S30. The unitary object 91 is attached to the back side plate surface 30b in a posture in which the hard transparent layer 64 side is opposed to the back side plate surface 30b of the display translucent plate 30. Here, since the adhesive layer 68b is attached to the surface of the hard translucent layer 64, the antireflection layer 60 and the hard translucent layer 64 are attached to the back side plate surface 30b by the adhesive force of the adhesive layer 68b. Established.

  More specifically, the sticking step S40 is performed in a vacuum chamber 92 that is in a vacuum environment of about 40 to 60 Pa. After attaching the above-mentioned integrated object 91 to the flat and elastically deformable rubber jig 93, the rubber jig 93 is applied to the apparatus 100 with a force of about 70 to 100 MPa from the side opposite to the mounting side of the integrated object 91. Is pressed against the display translucent plate 30 as a single unit before assembly.

  In the removal step S50 after the pasting step S40, the display light transmitting plate 30 on which the antireflection layer 60 and the hard light transmission layer 64 are formed is taken out of the vacuum chamber 92 from the inside of the vacuum chamber 92.

  In the bubble removal step S60 after the extraction step S50, as shown in FIG. 13, the display translucent plate 30 on which the antireflection layer 60 and the hard translucent layer 64 are formed in an environment of 40 to 60 ° C., which is higher than normal temperature. Even if air bubbles exist between the plate surface 30b, the antireflection layer 60, and the hard light transmitting layer 64 by pressurizing to about 0.7 to 1.0 MPa, the air bubbles are externally or recessed. It is possible to pull out 33 spaces SP. The series of steps is completed by the bubble removal step S60.

(Function and effect)
The operational effects of the present embodiment described above will be described below.

  According to the vehicle display device 100 of the present embodiment, the antireflection layer 60 attached to the plate surface 30b of the translucent plate 30 reduces the light reflectance at the plate surface 30b. By suppressing the reflection of the light on the plate surface 30b, the occurrence of multiple reflections by the light incident on the light transmitting plate 30 is suppressed, and the visibility of the display is enhanced and the appearance is improved.

  More specifically, since the reflection of the plate surface 30b provided with the concave portion 33 is suppressed, it is possible to prevent the reflected light from the plate surface 30b from entering the concave portion 33 and further irregularly reflecting, etc. It is possible to prevent the concave portion 33 from shining. In addition, when the contour by the side wall surface 35 is illuminated by the light from the light source unit 50 to display the vehicle information, the light from the light source unit 50 is suppressed from being reflected by the plate surface 30b. The display stands out. Thus, the appearance of the vehicle display device 100 can be improved.

  In addition, according to the present embodiment, the hard light-transmitting layer 64 that has a light-transmitting property and has a hardness higher than that of the anti-reflection layer 60 is provided between the plate surface 30 b and the anti-reflection layer 60. In this way, the antireflection layer 60 having a lower hardness than the hard light transmitting layer 64 is not directly formed on the recess 33. Therefore, the hard light-transmitting layer 64 prevents the antireflection layer 60 from being caught in the concave portion 33 and into the concave portion 33 and causing bubbles and peeling between the plate surface 30 b and the antireflection layer 60. Since bubbles and peeling are less likely to occur, the appearance of the vehicle display device 100 can be improved.

  Further, according to the present embodiment, since the hard light transmitting layer 64 is formed thicker than the antireflection layer 60, the effect of suppressing the entanglement of the antireflection layer 60 into the recess 33 by the hard light transmitting layer 64 is further increased. It will be expensive. Therefore, since bubbles and peeling are less likely to occur, the appearance of the vehicle display device 100 can be improved.

  In addition, according to the present embodiment, since the hard translucent layer 64 has at least a part of the indicators used for displaying vehicle information, a stereoscopic effect with the display provided in the other part is created and looks good. Can be further enhanced.

  Further, according to the present embodiment, the hard translucent layer 64 and the antireflection layer 60 are formed on the one plate surface 30b provided with the recess 33, and the additional antireflection layer 69 is directly on the other plate surface 30a. Is formed. In this case, since the antireflection layers 60 and 69 are provided on both sides of the translucent plate 30, reflection on the translucent plate 30 does not occur further, and the other plate surface 30a having a flat shape has a hard surface. Even if the translucent layer 64 is not provided, the additional antireflection layer 69 is not caught in the recess 33. Therefore, the appearance can be further enhanced while suppressing an increase in the number of parts.

  Moreover, according to this embodiment, the translucent board 30 is arrange | positioned at the back side of the said translucent board 30, and displays the display of the back side display part 20 which displays the information of a vehicle transparently. Since the light from the back side display unit 20 is easily transmitted by the antireflection layer 60, the visibility of the back side display unit 20 is improved, and the appearance can be further enhanced.

  According to the method for manufacturing the vehicle display device 100 in the present embodiment, the plate body 30b in which the concave portion 33 is provided on the hard translucent layer 64 side of the integrated 91 of the antireflection layer 60 and the hard translucent layer 64 that are stacked. And affixed to the plate surface 30b. In such a method, since the hard translucent layer 64 having a hardness higher than that of the antireflection layer 60 is applied in a state of being substantially opposed to the concave portion 33, bubbles or peeling off due to the integral body 91 being caught in the concave portion 33. Generation | occurrence | production of is suppressed. That is, since the antireflection layer 60 can be beautifully applied along the plate surface 30b, the appearance of the vehicle display device 100 can be improved.

  Further, according to the present embodiment, after the red zone 64a as at least a part of the indicators used for displaying the vehicle information is printed on the sheet 90 in which a plurality of the hard translucent layers 64 are continuous, the sheet is formed. 90 is cut into one sheet, and an integrated body 91 of the antireflection layer 60 and the hard translucent layer 64 is attached. Since at least a part of the index can be printed together on the sheet 90, the vehicle display device 100 can be efficiently manufactured.

  Further, according to the present embodiment, the pasting is performed in a vacuum environment. Even in such a case, since the hard translucent layer 64 having a hardness higher than that of the antireflection layer 60 is applied in a state of being substantially opposed to the concave portion 33, bubbles or peeling off due to the integral body 91 being caught in the concave portion 33. Generation | occurrence | production of is suppressed. In a vacuum environment, the plate surface 30b and the hard light-transmitting layer 64 are securely brought into close contact with each other, and the generation of bubbles is further suppressed, so that the appearance of the vehicle display device 100 is further enhanced.

(Other embodiments)
Although a plurality of embodiments of the present invention have been described above, the present invention is not construed as being limited to these embodiments, and various embodiments and combinations can be made without departing from the scope of the present invention. Can be applied.

  Specifically, as a first modification, as illustrated in FIG. 14, the back side display unit 20 may include an image display 27 that displays an image such as a liquid crystal display or an organic EL display. In the example of FIG. 14, the image display device 27 is disposed so as to overlap the concave portion 33. By forming the antireflection layer 60 on the plate surface 30b of the display translucent plate 30, the visibility of the image displayed by the image display device 27 is enhanced and the appearance is further improved.

  As a second modification, as shown in FIG. 15, the display translucent plate 30 includes a planar outer edge reflecting surface 32 b provided on the outer edge portion 32 so as to be inclined toward the back side toward the outer side, and an outer edge reflecting surface 32 b. You may have the outer edge light guide part 32a extended from the back to the back side. In the example of FIG. 15, the plurality of light emitting elements 52 of the light source unit 50 are arranged so as to face the front end surface on the back side of the outer edge light guide unit 32 a. The light emitted from the position where the plurality of light emitting elements 52 are shifted from each other is guided to the outer edge reflecting surface 32b by the outer edge light guiding portion 32a, and further reflected to the inner side of the display translucent plate 30 by the outer edge reflecting surface 32b. In this way, light from the light source unit 50 enters the display translucent plate 30. In this case, it is preferable that the base material is exposed without the antireflection layer 60 being affixed to the outer edge light guide portion 32a and the outer edge reflection surface 32b.

  As a third modification, the translucent plate 30 provided with the recess 33 can display any vehicle information such as the vehicle speed and the remaining fuel amount.

  As a fourth modification, the hard translucent layer 64 may form at least a part of an index used for displaying vehicle information by pulling out a part thereof.

  As a fifth modification, the additional antireflection layer 69 may not be provided.

  As a sixth modification, the thickness of the hard translucent layer 64 may be set to be equal to or less than the thickness of the antireflection layer 60.

  As a modified example 7, the concave portion 33 may be provided so as to be recessed from the viewing side plate surface 30a to the back side plate surface 30b, and the antireflection layer 60 and the hard translucent layer 64 may be provided with respect to the viewing side plate surface 30a. . Moreover, the recessed part 33 may be provided in the board surfaces 30a and 30b of both sides, and the antireflection layer 60 and the hard translucent layer 64 may be provided with respect to the board surfaces of both sides, respectively.

  As a modified example 8, the hard translucent layer 64 may not be provided between the plate surface 30 b provided with the recess 33 and the antireflection layer 60. For example, by adopting a material having high hardness as the transparent base material 61 of the antireflection layer 60, it is possible to suppress the antireflection layer 60 from being caught in the recess 33.

  DESCRIPTION OF SYMBOLS 100 Display apparatus for vehicles, 30 Display translucent board (translucent board), 30b Back side board surface (plate surface), 32 Outer edge part, 33 Recessed part, 35 Side wall surface, 60 Antireflection layer, 64 Hard translucent layer, 91 Integral object

Claims (10)

A vehicle display device mounted on a vehicle,
A light source unit (50) for providing light;
It forms a translucent plate shape provided with a concave portion (33) that is recessed from the plate surface (30b), and light from the light source portion is incident on the inside through an outer edge portion (32), whereby the side wall surface of the concave portion is formed. (35) is illuminated, and a translucent plate (30) for displaying vehicle information by shining the outline of the recess,
A vehicle display device, comprising: a translucent antireflection layer (60) formed on the plate surface and reducing light reflectivity on the plate surface. The antireflection layer is formed to cover the recess,
The vehicle display device according to claim 1, further comprising a hard light-transmitting layer (64) having a light-transmitting property and having a hardness higher than that of the anti-reflection layer between the plate surface and the anti-reflection layer.   The vehicle display device according to claim 2, wherein the hard translucent layer is formed thicker than the antireflection layer.   4. The vehicle display device according to claim 2, wherein the hard translucent layer has at least a part (64 a) of indicators used for displaying information of the vehicle. 5.   The vehicle display device according to claim 4, wherein at least a part of the indicator is provided on a surface of the hard light-transmitting layer that faces the plate surface. The translucent plate is provided with the recess in one of the plate surfaces (30b) formed on both sides, and the other plate surface (30a) different from the plate surface is formed in a flat shape,
The hard translucent layer and the antireflection layer are formed on the one plate surface,
The additional antireflection layer (69) for reducing the light reflectance on the other plate surface is formed directly on the other plate surface separately from the antireflection layer. The vehicle display device according to the item.   The vehicle according to any one of claims 1 to 6, wherein the translucent plate is disposed on a back side of the translucent plate and transmissively displays a display of a back side display unit (20) for displaying information on the vehicle. Display device. A plate-like shape provided with a recess (33) recessed from the plate surface (30b), and a translucent plate (30) having translucency;
An antireflection layer (60) that is formed with respect to the plate surface and reduces the reflectance of light on the plate surface;
A method for manufacturing a display device for a vehicle, comprising: a hard light-transmitting layer (64) having a light-transmitting property and having a hardness higher than that of the anti-reflection layer between the plate surface and the anti-reflection layer. ,
A laminating step (S20) for laminating the antireflection layer and the hard translucent layer;
Affixing the antireflection layer and the hard translucent layer (91) laminated in the laminating step on the plate surface in a posture in which the hard translucent layer side is opposed to the plate surface A method for manufacturing a display device for a vehicle, including a step (S40). A printing step (S10) for printing and forming at least a part (64a) of the indicators used for displaying the vehicle information on the sheet (90) including a plurality of the hard light-transmitting layers;
The manufacturing method of the display apparatus for vehicles of Claim 8 which further includes the cutting process (S30) which cut | disconnects the said sheet | seat into one sheet after the said lamination | stacking process and before the said sticking process.   The method for manufacturing a vehicle display device according to claim 8, wherein the attaching step is performed under a vacuum environment.

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