JP2019191283A - Protective cover of display device and display device - Google Patents

Abstract

To offer a benefit in terms of assembly workability and cost while improving display quality.SOLUTION: A protective cover comprises a tabular cover main body 21 that covers a plurality of display devices 10 with different luminances arrayed so that a display surface faces toward a user from a display surface side and to which the plurality of display devices 10 are attached via adhesive 30 from the display surface side, and a luminance adjustment part 41 that adjusts transmittance of incident light from the display device 10 and adjusts luminance of transmitted light outgoing toward the user. The cover main body 21 has light transmissivity and a transmission region 22 of light from each of the plurality of display devices 10, and the luminance adjustment part 41 is provided on the cover main body 21 and configured so as to unify luminances of each visible light obtained by the user as visual information through each transmission region 22.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a protective cover for a display device and a display device.

  2. Description of the Related Art Conventionally, a display device including a plurality of displays (liquid crystal panels and the like) having different luminances and a protective cover that covers these from the user side is known. This type of display device is mounted on a vehicle as a vehicle meter, for example. For example, Patent Document 1 below discloses a display device that unifies the appearance of a display area for each display and improves display quality. In the display device of Patent Document 1, each display device is attached to a protective cover with a light-transmitting spacer (adhesive material or the like) having a light transmittance corresponding to each display device, and the display area of each display device is displayed. Unify the appearance of

Japanese Patent Laid-Open No. 2006-156999

  By the way, although the transmittance | permeability of the adhesive material which affixes a display to a protective cover changes the transmittance | permeability with an additive etc. for every display, there exists a thing which cannot discriminate | determine the difference in the transmittance only by glance. Therefore, when a different adhesive material is used for each display device, there is a possibility that the assembling workability may be lowered and the cost may be increased. In addition, it is desirable in terms of assembly workability and cost that the adhesive material should have general versatility such as standardization and application to display devices with different specifications. As described above, there is room for improvement in the conventional display device from the viewpoint of improvement in assembling workability and cost reduction.

  Accordingly, an object of the present invention is to provide a protective cover for a display device and a display device that are useful in terms of assembly workability and cost while improving display quality.

  In order to achieve the above object, the protective cover of the display device according to the present invention covers a plurality of displays having different luminances arranged side by side with the display surface facing the user side from the display surface side, and an adhesive material. The main body of the plate-like cover on which the plurality of displays are attached from the display surface side, and the transmittance of the incident light from the display side are adjusted, and the brightness of the transmitted light emitted to the user side is adjusted A brightness adjusting unit, wherein the cover main body has translucency, and has a light transmission region for each of the plurality of displays, and the brightness adjusting unit is provided in the cover main body, It is characterized in that the brightness of the respective visible light obtained by the user as the visual information that has passed through each of the transmission regions is matched.

  Here, it is preferable that the brightness adjusting unit adjusts the transmittance of incident light from the display side according to a target value of the brightness of the visible light.

  In addition, the brightness adjusting unit is a printed body that prints on the wall surface of the cover main body in the transmission region, a patch that is attached to the wall surface of the cover main body in the transmission region, or an embedded body that is embedded in the cover main body in the transmission region It is desirable that

  The cover main body has at least one information display unit that emits light from the light source to the user side and displays information illuminated by the light from the light source, and includes incident light from the light source side. The cover main body is provided with a sub-luminance adjustment unit that adjusts the transmittance and adjusts the luminance of transmitted light to be emitted to the user side, and the sub-luminance adjustment unit is obtained by the user as visual information that has passed through the information display unit. It is desirable to adjust the transmittance of the incident light from the light source side according to the target value of the luminance of the visible light.

  Moreover, it is desirable that the display device displays information in the interior of the vehicle.

  In order to achieve the above object, a display device according to the present invention includes a plurality of displays having different luminances arranged side by side with a display surface facing the user, a protective cover that covers the plurality of displays, An adhesive material for attaching a display device to the protective cover, the protective cover covering the plurality of display devices from the display surface side, and a plurality of the display devices through the adhesive material to display the display device. A plate-like cover main body affixed from the surface side, and a luminance adjusting unit that adjusts the transmittance of incident light from the display side and adjusts the luminance of transmitted light to be emitted to the user side, and The cover main body has translucency, and has a light transmission area for each of the plurality of indicators, and the luminance adjustment unit is provided in the cover main body as visual information that has passed through each of the transmission areas. Match the brightness of each visible light obtained by the user. It is characterized in that it constitutes a so that.

  Since the protective cover and the display device of the display device according to the present invention can adjust the luminance of the visible light that has passed through each transmissive region to the same, the display information displayed between the transmissive regions is displayed between the display information. Contrast can be reduced. Therefore, the protective cover and the display device of this display device can improve the display quality among the display information displayed in the respective transmissive areas. Further, the protective cover and the display device of this display device leave the adjustment of the luminance of the visible light that has passed through each transmission region to a luminance adjustment unit provided in the cover main body. Therefore, in the protective cover and display device of this display device, it is not necessary to change the composition of the adhesive material for each display, so that a standardized adhesive material or a general-purpose adhesive material can be used. it can. Therefore, the protective cover and the display device of the display device can improve the assembling workability and reduce the cost. Further, since the shape of the protective cover varies depending on the specifications of the display device, it is necessary to prepare the protective cover as a dedicated product for each specification of the display device. Therefore, the protective cover and display device of this display device are less expensive than the case where the adjustment of the luminance is entrusted to the adhesive material by entrusting the adjustment of the luminance of the visible light to the luminance adjustment unit provided in the cover main body. Can be reduced. As described above, the protective cover and the display device of the display device according to the present invention are useful in terms of assembly workability and cost while improving display quality.

FIG. 1 is a front view illustrating a protective cover and a display device of a display device according to an embodiment. FIG. 2 is a top view illustrating the protective cover and the display device of the display device according to the embodiment. FIG. 3 is a front view showing a specific example of the protective cover of the display device and the display device. FIG. 4 is a top view showing a specific example of the protective cover of the display device and the display device. FIG. 5 is a top view illustrating an example of a protective cover of the display device and a modification of the display device. FIG. 6 is a top view illustrating an example of a protective cover of the display device and a modification of the display device.

  Embodiments of a protective cover for a display device and a display device 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.

[Embodiment]
One embodiment of a protective cover for a display device and a display device according to the present invention will be described with reference to FIGS.

  Reference numeral 1 in FIGS. 1 to 4 indicates the display device of the present embodiment. It should be noted that the display device 1 in each figure is a conceptual extract of some of the components.

Claims 1 and 6
The display device 1 includes a plurality of displays 10 having different luminances arranged side by side with a display surface facing the user, a protective cover 20 that covers the plurality of displays 10, and affixing the display 10 to the protective cover 20. And an adhesive material 30 to be attached (FIGS. 1 to 4). The exemplary display device 1 is installed in a vehicle interior and provides information to passengers in the room.

Claim 5
The display 10 has a smooth display surface and emits light related to display information from the display surface. For example, as the display device 10, a liquid crystal panel, an organic EL panel, or the like is used. In this example, the display 10 having a smooth display surface is used. The display 10 is driven and controlled by a control unit (not shown) of the display device 1 and displays information in the vehicle interior. The information displayed on the display device 10 may be any information as long as it is provided inside the vehicle. For example, the display 10 displays traveling information such as vehicle gauges, vehicle information such as oil and water temperature, traveling route guidance information, and the like.

  Here, the plurality of display devices 10 may be any devices that can be roughly classified by at least two types of luminance. For example, the plurality of display devices 10 may have different luminances from each other, and a plurality of display devices having the same luminance may be mixed as long as they can be roughly classified into at least two types of luminance. . The exemplary display device 1 includes a first display 10A and a second display 10B having a lower luminance than the first display 10A (FIGS. 1 to 4).

Claims 1 and 6
The protective cover 20 is disposed closer to the user than the display device 10. The protective cover 20 includes a plate-shaped cover main body 21 that covers the plurality of display devices 10 from the display surface side (FIGS. 1 to 4).

Claims 1 and 6
The cover main body 21 has translucency, and transmits light emitted from the display 10 to the user side. The cover main body 21 is formed into a flat plate shape with a synthetic resin material, a glass material, or the like so as to have a predetermined light transmittance. For example, the cover main body 21 is set to a light transmittance that makes it difficult to visually recognize the frame of the display 10 from the user side.

Claims 1 and 6
A plurality of indicators 10 are attached to the cover main body 21 from the display surface side through the adhesive material 30 (FIGS. 2 and 4). As long as the adhesive 30 has translucency, any optical adhesive may be used, and the optical adhesive may be cured by any method. Good. For example, a UV curable resin such as OCR (Optical Clear. Resin) or an adhesive sheet such as OCA (Optically Clear Adhesive) is used for the adhesive 30. This adhesive material 30 does not ask | require the presence or absence of a dam agent. 2 and 4, the adhesive material 30 is provided with a thickness as illustrated for convenience of explanation.

Claims 1 and 6
In the cover main body 21, the light emitted from the display device 10 is transmitted to the user side in a shape corresponding to the shape (in this case, a rectangle) of the display surface of the display device 10. In the cover main body 21, an area through which light emitted from the display device 10 is transmitted is referred to as a transmission region. The cover main body 21 has a light transmission region 22 for each of the plurality of displays 10 (FIGS. 1 and 3). Here, the transmission region 22 corresponding to the first display 10A is referred to as a first transmission region 22A, and the transmission region 22 corresponding to the second display 10B is referred to as a second transmission region 22B. The user recognizes that the display information of each display device 10 is displayed in each transmission region 22.

Claims 1 and 6
Here, in the illustrated cover main body 21, the light transmittance is uniform in each transmission region 22. Therefore, the display information for each display 10 is recognized by the user with each luminance. Therefore, the protective cover 20 adjusts the transmittance of light incident from the display 10 side (incident light from the display 10 side) and emits light to the user side (light emitted to the user side). Therefore, a luminance adjustment unit 41 for adjusting the luminance of transmitted light) is provided (FIGS. 1 to 4). The brightness adjusting unit 41 is provided in the cover main body 21. 2 and 4, the brightness adjusting unit 41 is provided with a thickness as shown for convenience of explanation.

Claims 1 and 6
For example, the luminance adjustment unit 41 adjusts the transmittance of the incident light by adjusting the refracted light or reflected light of the incident light from the display 10 side. The brightness adjusting unit 41 is configured to match the brightness of each light (viewing light) obtained by the user as visual information that has passed through each transmission region 22. That is, the brightness adjusting unit 41 is configured to match the brightness of the visible light for each of the transmissive areas 22, thereby reducing the contrast of display information displayed in each transmissive area 22.

Claims 1 and 6
The illustrated luminance adjusting unit 41 is formed in a shape (in this case, a rectangle) equivalent to the transmissive region 22, and is provided in the cover main body 21 for each transmissive region 22 (that is, for each display 10). Here, the luminance adjustment unit 41 corresponding to the first display 10A and the first transmission region 22A is referred to as a first luminance adjustment unit 41A, and the luminance adjustment unit 41 corresponding to the second display 10B and the second transmission region 22B is referred to. This is referred to as a second luminance adjustment unit 41B (FIGS. 1 to 4). 41A of 1st brightness | luminance adjustment parts and the 2nd brightness | luminance adjustment part 41B are changing the transmittance | permeability of the incident light from the indicator 10 side so that the brightness | luminance of the visible light for every transmissive area | region 22 may be united.

  The brightness adjustment unit 41 may be provided on either the display 10 side or the user side with respect to the cover main body 21.

  For example, when the brightness adjusting unit 41 is interposed between the display 10 and the cover main body 21, it is provided on the wall surface of the cover main body 21 on the display 10 side in the transmission region 22. In this case, the adhesive material 30 bonds the display surface of the display 10 and the luminance adjustment unit 41 together. Therefore, the light emitted from the display device 10 (the light emitted from the display device 10) enters the luminance adjustment unit 41 through the adhesive material 30. The luminance adjustment unit 41 adjusts the transmittance of the incident light and emits the transmitted light to the transmission region 22. In addition, when the brightness adjusting unit 41 is interposed between the cover main body 21 and the user, the brightness adjusting unit 41 is provided on the wall surface on the user side in the transmission region 22 of the cover main body 21. In this case, light emitted from the transmission region 22 of the cover main body 21 (light emitted from the cover main body 21) is incident on the luminance adjustment unit 41. The brightness adjusting unit 41 adjusts the transmittance of the incident light and emits the transmitted light to the user side. In this example, a brightness adjusting unit 41 is interposed between the display 10 and the cover main body 21.

Claim 3
The brightness adjusting unit 41 is configured as a printing body that prints on the wall surface of the cover main body 21 in the transmissive region 22. In this case, the brightness adjustment unit 41 prints on the wall surface on the display 10 side or the wall surface on the user side in the transmission region 22 of the cover main body 21 by using a method such as screen printing, pad printing, or inkjet printing. For these printings, a pigment ink corresponding to the target transmittance is used. That is, in this case, the brightness adjusting unit 41 is formed as a printed body (smoke printed body) corresponding to the target transmittance.

Claim 3
In addition, the brightness adjusting unit 41 may be configured as a sticking body that is attached to the wall surface of the cover main body 21 in the transmissive region 22 instead of such a printed body. In this case, a sticker such as a smoke film corresponding to the target transmittance is used for the luminance adjustment unit 41. The brightness adjusting unit 41 is attached to the wall surface on the display unit 10 side or the wall surface on the user side in the transmission region 22 of the cover main body 21.

Claim 3
In addition, the brightness adjusting unit 41 may be configured as an embedded body embedded in the cover main body 21 in the transmission region 22 instead of such a printed body or a pasted body. In this case, the brightness adjusting unit 41 is formed as an embedded body corresponding to the target transmittance. In this case, the brightness adjusting section 41 is embedded inside the cover main body 21 by molding the cover main body 21 by insert molding or the like in which the brightness adjusting section 41 is embedded.

  In this example, the brightness adjusting unit 41 is provided as a printing body.

Claim 2
Specifically, the brightness adjusting unit 41 may be configured to adjust the transmittance of incident light from the display 10 side according to the target value of the brightness of the visible light on the user side. That is, the first luminance adjustment unit 41A is formed to adjust the transmittance of incident light from the first display 10A side so as to achieve the target value of the luminance of the visible light. Further, the second luminance adjusting unit 41B is formed to adjust the transmittance of incident light from the second display 10B side so as to achieve the same target value of the luminance of the visible light.

  For example, if the luminance of the visible light is higher than the target value unless the luminance adjustment unit 41 is provided in the transmission region 22, the incident from the display 10 side is performed so that the luminance of the visible light is reduced to the target value. A luminance adjusting unit 41 capable of reducing the light transmittance is provided. On the other hand, depending on the light transmittance of the cover main body 21, the luminance of the visible light may be lower than the target value if the luminance adjusting unit 41 is not provided. In this case, the transmission region 22 is provided with a luminance adjustment unit 41 that can increase the transmittance of incident light from the display 10 side so as to increase the luminance of the visible light to the target value. The brightness adjustment unit 41 in this case may be formed using a technique such as an antireflection film that increases transmitted light by reducing the reflectance. Regardless of the level of luminance with respect to such a target value, in this case, a first luminance adjustment unit 41A having a light transmittance according to the target value of the luminance of the visible light is provided, and the same target value is set. A second luminance adjustment unit 41B for light transmittance is provided. In this example, the first luminance adjustment unit 41A has a lower light transmittance than the second luminance adjustment unit 41B.

  In this way, the protective cover 20 and the display device 1 can adjust the luminance of the visible light that has passed through each transmission region 22 to the same level, so that the display information displayed in each transmission region 22 The contrast between them can be reduced. Therefore, the protective cover 20 and the display device 1 can improve the display quality among the display information displayed in the respective transmissive areas 22. For example, even if the protective cover 20 and the display device 1 include a plurality of displays 10 having different luminances, the display of the plurality of displays 10 is displayed as if the display information is displayed on one display surface. Information can be visually recognized by the user.

  Furthermore, the protective cover 20 and the display device 1 leave the adjustment of the luminance of the visible light that has passed through each transmission region 22 to the luminance adjustment unit 41 provided in the cover main body 21. Therefore, in the protective cover 20 and the display device 1, it is not necessary to change the composition of the adhesive material 30 for each display 10, so that a standardized adhesive material 30 or a versatile adhesive material 30 is used. can do. Therefore, the protective cover 20 and the display device 1 can improve the assembly workability and reduce the cost.

  Further, since the shape of the protective cover 20 varies depending on the specifications of the display device 1, it is necessary to prepare the protective cover 20 as a dedicated product for each specification of the display device 1. Therefore, the protective cover 20 and the display device 1 are compared with the case where the adjustment of the luminance is entrusted to the adhesive material by entrusting the adjustment of the luminance of the visible light to the luminance adjusting unit 41 provided in the cover main body 21. Costs can be reduced.

Claim 4
Here, the illustrated cover main body 21 includes at least one information display unit 23 that emits light from the light source 51 (FIG. 4) to the user side and displays information illuminated by the light from the light source 51. (FIG. 3). The information display unit 23 is, for example, a direction indication display unit for turning left or right, various warning lights (warning lamps, so-called tell tales), or the like. The information display unit 23 is printed on the cover main body 21 as a shape, characters, or the like corresponding to the display content. The light source 51 is an LED (light emitting diode) or the like. The light source 51 is prepared for each information display unit 23.

Claim 4
The illustrated cover main body 21 is provided with a sub-luminance adjusting unit 42 that adjusts the transmittance of incident light from the light source 51 side and adjusts the luminance of the transmitted light emitted to the user side (FIGS. 3 and 4). . In FIG. 4, for convenience of explanation, the sub-luminance adjustment unit 42 is provided with a thickness as illustrated.

Claim 4
The sub-luminance adjusting unit 42 adjusts the transmittance of incident light from the light source 51 side in accordance with the target value of the luminance of visual light obtained by the user as visual information that has passed through the information display unit 23. The sub luminance adjusting unit 42 is configured as the same as the luminance adjusting unit 41 described above.

  The sub-luminance adjustment unit 42 may be provided for each information display unit 23 and is provided so as to cover an area 24 (hereinafter referred to as “collection region”) in which a plurality of information display units 23 are collected. There may be. In this example, the cover main body 21 has two collection areas 24 (a first collection area 24A and a second collection area 24B), and a sub-luminance adjustment unit 42 is provided for each collection area 24 (FIG. 3). And FIG. 4). Here, the sub luminance adjustment unit 42 corresponding to the first aggregate region 24A is referred to as a first sub luminance adjustment unit 42A, and the sub luminance adjustment unit 42 corresponding to the second aggregate region 24B is referred to as a second sub luminance adjustment unit 42B. . In FIG. 4, for convenience of explanation, the gathering region 24 is provided with a thickness as shown.

  The sub luminance adjustment unit 42 may be provided on either the light source 51 side or the user side with respect to the cover main body 21.

  For example, when the sub-brightness adjusting unit 42 is interposed between the light source 51 and the cover main body 21, it is provided on the wall surface on the light source 51 side in the gathering region 24 of the cover main body 21. In this case, light emitted from the light source 51 (emitted light from the light source 51) is incident on the sub-luminance adjusting unit 42. The sub-brightness adjusting unit 42 adjusts the transmittance of the incident light and emits the transmitted light to the collective region 24. In addition, when the sub luminance adjusting unit 42 is interposed between the cover main body 21 and the user, the sub luminance adjusting unit 42 is provided on the wall surface on the user side in the gathering region 24 of the cover main body 21. In this case, the light emitted from the gathering region 24 of the cover main body 21 (the light emitted from the cover main body 21) is incident on the sub-luminance adjustment unit 42. The sub-luminance adjustment unit 42 adjusts the transmittance of the incident light and emits the transmitted light to the user side. In this example, a sub-luminance adjustment unit 42 is interposed between the light source 51 and the cover main body 21.

  As described above, the sub-luminance adjustment unit 42 adjusts the transmittance of incident light from the light source 51 side according to the target value of the luminance of the visible light that has passed through the information display unit 23. For example, when the high-intensity light source 51 is used, the sub-luminance adjustment unit 42 reduces the transmittance of incident light from the light source 51 side so that the luminance of the visible light that has passed through the information display unit 23 becomes the target value. To adjust.

On the other hand, the sub-luminance adjustment unit 42 does not use the target value of the luminance of the visible light that has passed through the information display unit 23, and the light from the light source 51 side according to the luminance of the visual light that has passed through the transmissive region 22. You may comprise so that the transmittance | permeability of incident light may be adjusted. In this case, the sub-luminance adjustment unit 42 may be configured such that the luminance of the visible light that has passed through the information display unit 23 is lower than the luminance of the visual light that has passed through the transmission region 22. May be configured to be higher than the luminance of the visible light passing through the transmission region 22. Further, the sub-luminance adjusting unit 42 may be configured such that the luminance of the visible light that has passed through the information display unit 23 and the luminance of the visible light that has passed through the transmission region 22 are equivalent.

  As described above, since the protective cover 20 and the display device 1 are also provided in the cover main body 21 with respect to the luminance adjustment function of the visible light that has passed through the information display unit 23, the assembly work can be performed even if the information display unit 23 is added. It is possible to suppress the decline in sex and soaring costs. Further, the protective cover 20 and the display device 1 are provided with the sub-luminance adjustment unit 42 in the cover main body 21, so that the display information displayed in the transmissive area 22 and the display information displayed in the information display unit 23 are displayed. It is possible to add a contrast between them or reduce the contrast therebetween. Therefore, the protective cover 20 and the display device 1 can improve the display quality including the display information displayed on the information display unit 23.

  By the way, in the present example shown above, the luminance adjusting unit 41 is provided for each transmissive region 22, but the luminance adjusting unit 41 is not necessarily provided in all the transmissive regions 22 by configuring as follows. . In this case, the main display is used as the reference brightness among the plurality of displays 10, and the remaining display is used as the sub display. In this case, the transmission region 22 corresponding to the main display is set as the main transmission region, and the transmission region 22 corresponding to the sub display is set as the sub transmission region. Here, the first display 10A is a main display, and the first transmission region 22A corresponding to the first display 10A is a main transmission region. Here, the second display 10B is a sub-display, and the second transmission region 22B corresponding to the second display 10B is a sub-transmission region.

  In this case, the luminance adjustment unit 41 is provided at least in the sub-transmission region (second transmission region 22B). In the cover main body 21 in which a plurality of sub-displays are present, the luminance adjustment unit 41 is provided at least for each sub-transmission region. In this case, the luminance adjustment unit 41 of the sub-transmission region is configured so that the transmittance of the incident light from the sub-display side decreases when the luminance of the sub-display is higher than the luminance of the main display. If the luminance is lower than the luminance of the main display, the transmittance of incident light from the sub-display side is increased. Even if comprised in this way, this protective cover 20 and the display apparatus 1 can acquire the effect similar to the previous illustration. This concept may be applied to the sub-luminance adjustment unit 42.

  Moreover, in this illustration shown above, the display 10 with a smooth display surface and the cover main body 21 using the flat protective cover 20 are used. However, the display 10 and the protective cover 20 are not necessarily limited to a combination of such flat wall surfaces. For example, the display device 1 may include a combination of a display (so-called curved display) 10 with a display surface formed in a curved surface and a protective cover 20 having a cover main body 21 in an arc shape and a plate shape ( FIG. 5). The cover main body 21 is formed in an arc shape with a curvature matching the curved surface shape of the display surface of the display device 10, for example. Moreover, the display apparatus 1 is good also as a thing provided with the combination of the display 10 with a smooth display surface, and the cover main body 21 with the arc-shaped and plate-shaped protective cover 20 (FIG. 6). In this case, the space between the display surface of the display device 10 and the wall surface of the cover main body 21 or the brightness adjusting unit 41 is filled with the adhesive material 30 so that no gap is formed. Even if it changes to such a combination, this protective cover 20 and the display apparatus 1 can acquire the effect similar to the previous illustration.

  As described above, the protective cover 20 and the display device 1 of the present embodiment are useful in terms of assembly workability and cost while improving display quality.

DESCRIPTION OF SYMBOLS 1 Display apparatus 10 Display 10A 1st display 10B 2nd display 20 Protective cover 21 Cover main body 22 Transparent area 22A 1st transparent area 22B 2nd transparent area 23 Information display part 24 Collective area 24A 1st aggregate area 24B 2nd Collective area 30 Adhesive material 41 Brightness adjustment unit 41A First luminance adjustment unit 41B Second luminance adjustment unit 42 Sub luminance adjustment unit 42A First sub luminance adjustment unit 42B Second sub luminance adjustment unit 51 Light source

Claims (6)

A plate shape in which a plurality of displays with different luminances arranged side by side with the display surface facing the user side are covered from the display surface side, and the plurality of displays are attached from the display surface side via an adhesive material With the cover subject of
A luminance adjusting unit for adjusting the transmittance of incident light from the display side and adjusting the luminance of the transmitted light to be emitted to the user side;
With
The cover main body has translucency, and has a light transmission region for each of the plurality of indicators,
The said brightness adjustment part is provided in the said cover main body, and it comprises so that the brightness | luminance of each visual recognition light which a user may obtain as visual information which passed through each said transmissive area | region will be comprised, The protective cover of the display apparatus characterized by the above-mentioned.   2. The protective cover for a display device according to claim 1, wherein the luminance adjustment unit adjusts a transmittance of incident light from the display side according to a target value of the luminance of the visible light.   The brightness adjusting unit is a printed body that prints on the wall surface of the cover main body in the transmission region, a paste that is attached to the wall surface of the cover main body in the transmission region, or an embedded body that is embedded in the cover main body in the transmission region. The protective cover for a display device according to claim 1, wherein the protective cover is a display device. The cover main body has at least one information display unit that emits light from a light source to a user side and displays information illuminated by the light of the light source,
Adjusting the transmittance of incident light from the light source side, and providing a sub-luminance adjustment unit for adjusting the luminance of transmitted light to be emitted to the user side in the cover main body,
The sub-luminance adjustment unit adjusts the transmittance of incident light from the light source side according to a target value of luminance of visual light obtained by a user as visual information that has passed through the information display unit. Item 4. A protective cover for a display device according to item 1, 2 or 3.   The display device protective cover according to any one of claims 1 to 4, wherein the display device displays information in a vehicle interior. A plurality of indicators with different brightness arranged side by side facing the user,
A protective cover covering a plurality of the indicators;
An adhesive material for attaching the indicator to the protective cover;
With
The protective cover is
A plate-like cover main body that covers the plurality of indicators from the display surface side, and the plurality of indicators are attached from the display surface side via the adhesive material;
A luminance adjusting unit for adjusting the transmittance of incident light from the display side and adjusting the luminance of the transmitted light to be emitted to the user side;
With
The cover main body has translucency, and has a light transmission region for each of the plurality of indicators,
The display device according to claim 1, wherein the brightness adjusting unit is provided in the cover main body, and is configured to match the brightness of each visible light obtained by a user as visual information that has passed through each of the transmission regions.

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