JPH0649153U - Vehicle display - Google Patents

Abstract

(57) [Summary] [Purpose] The display light of the display installed on the vehicle ceiling is reflected by the reflective member installed on the upper surface of the dashboard, and the reflected light is further reflected by the windshield to guide it to the driver's viewpoint. Provided is a display device for a vehicle, in which a virtual image of a display image is visually recognized behind a windshield, in which a reliability of a reflecting mirror installed on a dashboard is improved. [Structure] The reflecting member 40 is configured by applying a reflecting layer 42 to a transparent substrate 41, and is installed on the dashboard 3 with the transparent substrate 41 side facing the vehicle ceiling 1 side. The display light from the display device 2 is incident on the reflective layer through the transparent substrate, and the reflected light reflected by the reflective layer is incident on the windshield 5 through the transparent substrate.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a vehicle display device, and in particular, a display image for displaying vehicle information such as vehicle speed is reflected by a reflecting member such as a reflecting mirror and further reflected by a windshield or the like in front of the vehicle. The present invention relates to a so-called head-up display type vehicular display device which is guided from the driver's point of view and allows a virtual image of a display image to be visually recognized behind a windshield or the like.

[0002]

[Prior art]

 Conventionally, as this type of apparatus, for example, one having a configuration shown in FIG. 3 disclosed in Japanese Utility Model Laid-Open No. 64-2628 is known. In the figure, 10 is a combination meter, which is provided on the instrument panel surface facing the driver and allows the driver to directly see the display image of the display device that displays vehicle information such as vehicle speed. It is an existing display device.

In addition to the existing display device, a display device 2 for displaying driving information is arranged on the vehicle ceiling 1 in the vehicle compartment with its display surface facing the upper surface of the dashboard 3. A reflecting mirror 4 is arranged on the upper surface of the dash board 3 to reflect the display light of the display 2. The reflecting mirror 4 is arranged on the dashboard 3 so that the reflecting surface is directed upward so that the reflection by the reflecting mirror 4 is directed toward the windshield 5. Therefore, the display light emitted from the display device 2 is reflected by the reflecting mirror 4, and further reflected by the inner surface of the windshield 5 that functions as a reflecting surface, and is guided to the driver's viewpoint 6. When viewed from the viewpoint 6, the display image The virtual image X is visible behind the windshield 5 (in front of the vehicle).

As shown in FIG. 4, this type of display device has a structure in which the display 2 and the reflecting mirror 4 are installed in the dashboard 3, as compared to the display 2 and the display 2 in the dashboard 3. It is not necessary to secure a space for accommodating the reflecting mirror 4, and the distance from the display 2 to the windshield 5 can be increased, so that the distance from the viewpoint 6 to the virtual image X is not long, which is sufficient. The effect of distance display is obtained.

By the way, in general, a reflecting mirror used in an optical device is made of aluminum (Al) on the surface of a glass substrate 4a, as shown in FIG. 5, so that the problem of a double image of a reflected image does not occur. The transparent protective layer 4c made of, for example, silicon oxide (SiO ₂ ) is provided on the reflective layer 4b deposited by vapor deposition, and the surface provided with the transparent protective layer 4c is used as the reflective surface. . Therefore, the vehicle display device of FIG. 3 which is a type of optical device also employs the reflecting mirror having the structure shown in FIG.

[0006]

[Problems to be solved by the device]

 However, when the reflecting mirror as shown in FIG. 5 was installed on the dashboard 3, there was a problem in its structure in view of the surrounding environment of the mounting portion and handling problems. In other words, in the reflecting mirror 4 of this structure, the transparent protective layer 4c cannot prevent heat resistance, moisture resistance, and scratch resistance, but the temperature on the dashboard is about 100 to 120 ° C, and the windshield is also used. Due to the proximity, the humidity was high, and the cycle shock of high temperature-cooling due to the use of the air conditioner was severe, the operating environment was extremely severe, and there were mounting problems.

Further, the reflecting mirror 4 installed on the dashboard with the reflecting surface facing upward requires maintenance to remove dirt on the reflecting surface, but the transparent protective layer 4c is sufficient for wiping for this purpose. There was a problem with the reliability of the reflector, which was not something that could be endured.

Therefore, in view of the above-mentioned conventional problems, the present invention reflects the display light of the display installed on the vehicle ceiling by the reflecting member installed on the upper surface of the dashboard, and further reflects the reflected light by the windshield. In a vehicle display device that reflects and guides it to the driver's point of view to visually recognize a virtual image of a display image behind the windshield, it is possible to provide a vehicle display device in which the reliability of a reflecting mirror installed on a dashboard is improved. Has an aim.

[0009]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, a vehicle display device made according to the present invention reflects the display light of a display unit installed on the vehicle ceiling by a reflecting member installed on the upper surface of the dashboard, and further the reflected light is displayed. In a vehicle oil display device in which a virtual image of a display image is visually recognized behind the windshield by being reflected by a shield, the reflective member is configured by providing a transparent substrate with a reflective layer, and the transparent substrate side is provided. It is characterized in that it is installed on the dashboard toward the vehicle ceiling side.

[0010]

[Action]

 In the above configuration, the reflective member installed on the windshield is configured by applying a reflective layer to the transparent substrate, and the transparent substrate side is installed on the dashboard with the vehicle ceiling side facing the display light from the display unit. Incident on the reflective layer through the transparent substrate, and the reflected light reflected by the reflective layer is incident on the windshield through the transparent substrate.The reflective layer is formed on the back surface side of the transparent substrate to protect it. The protective film does not have to be formed by a transparent material.

Further, even if two virtual images are formed by the reflection on the surface of the reflective layer and the transparent substrate, the display is placed on the ceiling of the vehicle to display the distance, or the surface of the transparent substrate is reflected. The double image can be made invisible by shaping the surface so that it is not parallel to the layers and positively moving the virtual image due to surface reflection to the outside of the visible range.

[0012]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment of a vehicular display device according to the present invention, in which the same parts as those described above with reference to FIG. 3 are designated by the same reference numerals.

In the embodiment of FIG. 1, the display light of the display device 2 installed on the vehicle ceiling 1 is not directly incident on the reflecting mirror 4 on the dash board 3 but is installed on the vehicle ceiling 1 together with the display device 2. The light is reflected by the reflecting mirror 7 and then incident. As a result, the distance to the reflecting surface of the windshield 5 is increased by the distance between the reflecting mirror 7 and the display 2 as compared with the case without the reflecting mirror 7, and the virtual image X is formed that far. .

The reflecting mirror 40 installed on the dashboard 3 is formed by forming a reflecting layer 42 on one surface of a transparent substrate 41 such as glass by vapor deposition of aluminum (Al), The installation is performed with the surface on which the reflective layer 42 is applied facing downward. Specifically, as shown in FIG. 2, a protective film 43 for protecting the reflective layer 42 is provided on the surface of the surface of the transparent substrate 41 on which the reflective layer 42 is provided. Since the protective film 43 is located below the reflecting mirror 40 in the installed state and does not participate in the reflection of the display light, it is only necessary to surely protect the reflecting layer 42 and it may be formed of an opaque material. .

With the above configuration, since the reflecting mirror 40 is installed on the dash board 3 so that the surface of the transparent substrate 41 faces upward, the display light from the display unit 2 installed on the vehicle ceiling 1 is transparent. It reaches the reflection layer 42 through the substrate 41, is reflected by the reflection layer 42, and then enters the windshield 5 through the transparent substrate 41. At this time, a reflective surface is also formed on the surface of the transparent substrate 41, and a part of the display light incident on the transparent substrate 41 is reflected by this reflective surface as shown by the dotted line in FIG.

When reflection occurs on the surfaces of the reflective layer 42 and the transparent substrate 41 in this manner, another virtual image is formed in front of the windshield 5 adjacent to the virtual image X due to the reflection of the reflective layer 42. However, since the display device 2 is installed on the vehicle ceiling 1 and the display light of the display device 2 is incident on the windshield 5 via the reflecting mirror 40, the virtual image X and the virtual image adjacent thereto are In both cases, the distance l ₁ between the display 2 and the reflecting mirror 40 and the distance l ₂ between the reflecting mirror 40 and the windshield 5 are added to the windshield front position. .

When such a distant display is performed, the distance from the viewpoint 6 to the virtual image X becomes very long, the viewing angle when the two virtual images are viewed from the viewpoint 6 becomes extremely small, and the eyes of the human eye. Since the resolution is lower than the resolution, the two virtual images cannot be visually recognized as a double image. Therefore, it was found that even if the transparent substrate surface side of the reflecting mirror, which is considered insane in the general optical device, is used as the reflecting surface, the problem of double image does not occur in the vehicular display device for displaying far.

Further, since the transparent substrate surface side of the reflecting mirror is used as the reflecting surface in this way, the display light can be made incident on the reflecting layer 42 through the transparent substrate 41, so that the reflecting layer is a transparent protective film. There is no need to protect with, and the problem of using this transparent protective film has been solved.

In the above-described embodiment, the double image cannot be visually recognized by the distant display, but the display light is made incident on the reflection layer 42 through the transparent substrate 41. In the case of using, the transparent substrate 41 is formed by molding the transparent substrate 41 so that the surface of the transparent substrate 41 inclines to the front, back, left, or right with respect to the reflection surface of the reflective layer 42. It is also possible to positively move the virtual image displayed outside the visible range of the driver so that the double image cannot be viewed.

[0020]

[Effect of device]

 As described above, according to the present invention, the reflective member formed by applying the reflective layer to the transparent substrate is installed on the dashboard with the transparent substrate side facing the vehicle ceiling side, and the reflective layer is the rear surface of the transparent substrate. Since it is formed on the side, the protective film does not need to be formed of a transparent material, and it is possible to select any material having excellent heat resistance, moisture resistance, and scratch resistance. The reliability of the reflector can be improved.

Further, even if two virtual images are formed by using such a reflecting member, the display is installed on the vehicle ceiling, and the distance display is positive, or the virtual image due to surface reflection is positively moved to the outside of the visible range. Since it can be moved, the double image problem does not occur.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a vehicle display device according to the present invention.

FIG. 2 is a partially enlarged cross-sectional view showing a specific configuration example of the reflecting mirror in FIG.

FIG. 3 is a cross-sectional view showing an example of a conventional vehicle display device.

FIG. 4 is a cross-sectional view showing another example of the conventional vehicle display device.

5 is a partially enlarged cross-sectional view showing a specific example of the reflecting mirror in FIG.

[Explanation of symbols]

 1 Vehicle Ceiling 2 Display 3 Dashboard 40 Reflective Member 41 Transparent Substrate 42 Reflective Layer 5 Windshield 6 Viewpoint X Virtual Image

Claims (1)

[Scope of utility model registration request] 1. The display light of an indicator installed on the vehicle ceiling is reflected by a reflecting member installed on the upper surface of the dashboard, and the reflected light is reflected by a windshield to guide it to the driver's point of view, behind the windshield. In a vehicular display device for visually recognizing a virtual image of a display image, the reflecting member is formed by applying a reflecting layer to a transparent substrate, and the transparent substrate side is installed on the dashboard with the vehicle ceiling side thereof. Characteristic vehicle display device.