JP2019105716A - Vehicular apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a configuration capable of realizing miniaturization of a vehicle device. A HUD device (10), which is a vehicle device, is arranged below a windshield (50) in a vehicle (A). The HUD device 10 includes a first non-reflective surface 31 and a curved reflective surface 21. The first non-reflective surface 31 is in a posture of inclining rearward toward the upper side of the vehicle A, and is formed so as to diffuse or absorb light. The curved reflective surface 21 has a curved shape that curves upward as it moves away from the first non-reflective surface 31 toward the rear of the vehicle A. The curved reflective surface 21 reflects external light incident through the windshield 50 toward either the first non-reflective surface 31 or the lower light-shielding layer 56 provided on the lower edge portion of the windshield 50. [Selection diagram] Fig. 1

Description

  The disclosure of this specification relates to vehicle equipment.

  Conventionally, for example, Patent Document 1 discloses a head-up display device for a vehicle (hereinafter referred to as “HUD device”) as a type of vehicle equipment disposed below a windshield. On the top surface of the HUD device, a non-reflective wall portion in a posture along the vertical direction of the vehicle and a dustproof cover in a posture intersecting the non-reflective wall portion are provided. The dustproof cover is formed in a curved shape that curves upward as it gets away from the non-reflection wall. Due to the shape of the anti-vibration cover, of the external light entering the vehicle interior through the windshield, light that may be visually recognized due to reflection by the dustproof cover is substantially incident on the non-reflection wall. As a result, it is possible to prevent external light reflected by the dustproof cover from being viewed by the viewer.

JP 2013-32087 A

  Now, in the HUD device of Patent Document 1, the dustproof cover has a shape that is largely curved upward, so that substantially all of the external light that causes a fear of visual recognition due to reflection by the dustproof cover reaches the non-reflection wall portion. It is done. Similarly, the height of the non-reflection wall portion is sufficiently secured in the vertical direction so that substantially all of the external light causing a possibility of visual recognition due to the reflection by the dustproof cover is incident. According to the above, it is also difficult to reduce the size of the dustproof cover in the vertical direction and to reduce the size of the non-reflection wall in the vertical direction, which hinders downsizing.

  An object of the present disclosure is to provide a configuration that can realize downsizing of a vehicle device such as a HUD device.

  In order to achieve the above object, one aspect disclosed is a device for a vehicle disposed under a windshield (50) in a vehicle (A), in a posture in which it is inclined rearward as it goes upward of the vehicle A low-reflecting wall (31) formed to diffuse or absorb light, and a curved shape that curves upward as it gets farther from the low-reflecting wall to the rear of the vehicle, and at least a portion of the outside light incident through the windshield And a curved reflective surface (21) that reflects toward either of the low reflective wall surface and the light shielding portion (56) provided at the lower edge portion of the windshield.

  In this aspect, ambient light incident through the windshield is reflected by the curved reflective surface towards either the low reflective wall surface or the light blocking portion of the lower edge portion of the windshield. As described above, if not only the reflection of outside light directed to the low reflection wall surface but also the reflection of outside light directed to the light shielding portion of the windshield is permitted, substantially all the outside light having a possibility of visual recognition of the vehicle occupant The curved reflective surface does not need to be greatly curved to reach the low reflective wall surface. Similarly, it is not necessary to secure the height in the vertical direction of the low reflection wall surface so that substantially all external light that may be viewed due to reflection on the curved reflective surface is incident. According to the above, it is possible to reduce the vertical dimension of the curved reflective surface by loosening the curvature of the curved reflective surface and to reduce the vertical dimension of the low reflection wall surface. Therefore, downsizing of the vehicle device can be realized.

  The reference numerals in the parentheses above merely show an example of the correspondence with specific configurations in the embodiments to be described later, and do not limit the technical scope at all.

It is a figure which shows typically positional relationships, such as an eye box, a virtual image, and a HUD apparatus. It is a figure which shows the structure of a windshield. It is a sectional view showing the composition of the HUD device by a first embodiment. It is sectional drawing which shows the structure of the HUD apparatus by 2nd embodiment. It is sectional drawing which shows the whole structure of the display system by 3rd embodiment. It is sectional drawing which shows the structure of the HUD apparatus by 4th embodiment. It is sectional drawing which shows the structure of the HUD apparatus by 5th embodiment. It is sectional drawing which shows the structure of the HUD apparatus by 6th embodiment. FIG. 8 is a cross-sectional view showing a configuration of a HUD device according to a first modification. It is a figure which shows the lower side light shielding layer by the modification 2 typically. It is a figure which shows the windshield in the modification 3. FIG. It is a figure which shows typically the louver film which comprises a lower side light shielding layer.

  Hereinafter, a plurality of embodiments of the present disclosure will be described based on the drawings. In addition, the overlapping description may be abbreviate | omitted by attaching the same code | symbol to the corresponding component in each embodiment. When only a part of the configuration is described in each embodiment, the configuration of the other embodiments described above can be applied to other parts of the configuration. Further, not only the combination of the configurations explicitly described in the description of the respective embodiments but also the configurations of the plurality of embodiments can be partially combined with each other even if the combination is not specified unless any trouble occurs in the combination. And the combination which has not been specified between the configurations described in a plurality of embodiments and modifications is also disclosed by the following description.

First Embodiment
The HUD device 10 according to the first embodiment of the present disclosure shown in FIG. 1 is a virtual image display device, and is one of the devices for vehicle mounted on the vehicle A. The HUD device 10 is disposed below the windshield 50 in the vehicle A and in front of a driver's seat on which a passenger (viewer) who got on the vehicle A sits. The HUD device 10 is housed, for example, in a housing space provided in an instrument panel or the like of the vehicle A. The HUD device 10 functions as a display device that provides the viewer with various information related to the vehicle A.

  The HUD device 10 is a virtual image display device that projects the light of the display light image that has been lighted and displayed on the projection area 58. The projection area 58 is predefined in the windshield 50, for example. The light projected onto the windshield 50 by the HUD device 10 is reflected toward the viewer by the projection area 58 and reaches an eye box EB which is predefined to be located around the viewer's head. The viewer who has positioned the eye point in the eye box EB can view the light of the display light image as a virtual image 70 superimposed on the foreground.

  The eye box EB is an area based on eyedrops whose details are defined in JIS D 0021: 1998 as an example, and is an area where it is assumed that the eyes of a passenger (viewer) of the vehicle A, such as a driver, are located. It is. If you explain in detail. The eyedrops are set based on an eye range that statistically represents the distribution of eye positions. As the eye drops, it is preferable to use eye drops of 90 percentile to 99 percentile such as 90 percentile eye drops, 95 percentile eye drops, 99 percentile eye drops, and the like. The eye box EB may be an area including an eye drop or an eye range, or may be an area substantially matching the eye drop or an eye range.

  The virtual image 70 presents the viewer with, for example, vehicle state information such as the vehicle speed and the remaining amount of fuel, navigation information for route guidance, and the like. The virtual image 70 is imaged in a space of about 10 to 20 meters in front of the vehicle A from an eye point, for example. The virtual image 70 functions as an augmented reality (AR) display by being superimposed on a road surface etc. in appearance of a viewer.

  The details of the windshield 50 and the HUD device 10 described above will be described in order. In the following description, the vertical direction and the front-rear direction are defined with reference to the vehicle A placed on a horizontal surface in a stationary state. That is, the up and down direction is a direction along gravity, and the front and back direction is a longitudinal direction of the vehicle A and a direction along a horizontal surface.

  The windshield 50 shown in FIGS. 1 to 3 is provided in front of the driver's seat (viewer) in the vehicle A. The periphery of the windshield 50 is fixed to the body of the vehicle A by an adhesive or the like. The windshield 50 has a slight curvature so as to be convex from the vehicle interior to the vehicle exterior, and functions as a concave mirror for focusing the light of the display light image at a distance. The windshield 50 is composed of an outer shield glass 51, an inner shield glass 52, an intermediate film 53, a light shielding layer 55, and the like.

  The outer shield glass 51 and the inner shield glass 52 are formed in a substantially rectangular plate shape by substantially colorless and transparent tempered glass. The windshield 50 is a laminated glass formed by laminating the outer shield glass 51 and the inner shield glass 52. An intermediate film 53 and a light shielding layer 55 are sandwiched between the outer shield glass 51 and the inner shield glass 52.

  The intermediate film 53 is formed by stacking a plurality of resin thin films having a scattering prevention function, a sound insulation function, a heat shielding function, and the like. The intermediate film 53 is sandwiched between the outer shield glass 51 and the inner shield glass 52 throughout the windshield 50. The intermediate film 53 may have an optical function of increasing the light reflectance of the display light image.

  The light shielding layer 55 is provided, for example, between the intermediate film 53 and the inner shield glass 52. The light shielding layer 55 is formed, for example, by printing of reflective black ceramic. The light shielding layer 55 is provided with a predetermined width from the four outer edge portions of the windshield 50 toward the center (see FIG. 2). The widths of the light shielding layers 55 provided on the four sides of the windshield 50 are defined so as not to hinder the view of the viewer seated on the driver's seat, and may be different from each other. The light shielding layer 55 is not formed in the central portion of the windshield 50. The light shielding layer 55 has a high light shielding function, and reflects external light such as sunlight incident on the windshield 50. In addition, the light shielding layer 55 makes the bonded portion of the windshield 50 invisible from the outside of the vehicle.

  In the windshield 50 described above, a reflection area 57 and the above-described projection area 58 are defined in advance. The reflection area 57 is defined in the area of the surface of the windshield 50 on the vehicle interior side overlapping the light shielding layer 55 (hereinafter referred to as “lower light shielding layer 56”) provided on the lower edge portion of the windshield 50 There is. The reflective area 57 is located above and to the front of the HUD device 10. The upper edge of the lower light shielding layer 56 substantially coincides with the upper edge 56 a of the reflective region 57. The projection area 58 is defined in front of the eye box EB of the viewer and above the reflection area 57 as described above. The projection area 58 is defined in an area of the surface of the windshield 50 on the vehicle interior side different from the area where the light shielding layer 55 is formed.

  The HUD device 10 is one of a plurality of displays mounted on the vehicle A. The HUD device 10 is electrically connected to the display control device 100. The display of the virtual image 70 by the HUD device 10 is controlled by the display control device 100. The HUD device 10 includes a projector 11, a projection optical system 12, a housing 15, a dustproof sheet 20, a light trap wall 30, and the like.

  The projector 11 cooperates with the projection optical system 12 to project the light of the display light image onto the projection area 58. The projector 11 emits light of a display light image toward the projection optical system 12. The projector 11 may be configured to include a liquid crystal panel, a backlight, or the like, or may be configured to mainly include an organic EL panel.

  The projection optical system 12 projects the light of the display light image incident from the projector 11 onto the projection area 58. The projection optical system 12 is formed by combining one or more reflecting mirrors, a lens, and an optical element such as a DOE (Diffractive Optical Element). The projection optical system 12 has, for example, a convex mirror 13 and a concave mirror 14. The convex mirror 13 reflects the light incident from the projector 11 toward the concave mirror 14. The concave mirror 14 further reflects the light reflected by the convex mirror 13 toward the projection area 58. The light of the display light image reflected by the concave mirror 14 reaches the projection area 58 while passing through the dustproof sheet 20. As described above, the virtual image 70 of the display light image is displayed so as to be visible from the viewer.

  The housing 15 has an external shape that can be accommodated in an accommodation space secured in an instrument panel or the like. The housing 15 is formed in a box shape by a resin material or a metal material. The housing 11 accommodates the projector 11 and the projection optical system 12. The housing 15 holds the projector 11, the convex mirror 13 and the concave mirror 14, and defines the optical positional relationship of these with high accuracy. A projection opening 16 is formed in the ceiling wall of the housing 15. The projection aperture 16 passes the light of the display light image reflected by the projection optical system 12.

  The dustproof sheet 20 is formed in a curved thin plate shape from a resin material such as acrylic and polycarbonate or a light transmitting material such as glass. The dustproof sheet 20 has a lid shape that closes the entire projection opening 16 of the housing 15, and is fitted into the projection opening 16. The dustproof sheet 20 prevents the entry of foreign matter (dust, dirt, water, etc.) into the interior of the housing 15 by being fitted into the projection opening 16. The dustproof sheet 20 has an optical function of transmitting the light of the display light image, and an optical function of reflecting the external light that has entered the vehicle interior through the windshield 50.

  The dustproof sheet 20 is located behind the light trap wall 30. A curved reflective surface 21 is formed on the outer surface of the dustproof sheet 20 exposed to the outside of the housing 15. The curved reflective surface 21 is located below the windshield 50 and is opposed to the windshield 50 in the vertical direction. The curved reflective surface 21 is subjected to an optical coating process to increase the light reflectance. The curved reflective surface 21 is formed in a concave shape which is recessed toward the inside of the housing 15.

  The dustproof sheet 20 has a curvature only in the front-rear direction of the vehicle A, and does not have a curvature in the lateral direction of the vehicle A. The dust-proof sheet 20 is formed with a curve according to a portion of a parabola. As a result, the curved reflective surface 21 is a parabolic curved surface. The curved reflective surface 21 curves upward as it is separated from the light trap wall 30 in the front-rear direction of the vehicle A. The trailing edge 23 of the curved reflecting surface 21 located at the uppermost position is provided at a height position similar to the upper edge 56 a of the lower light shielding layer 56 or at a height position lower than the upper edge 56 a. In addition, the trailing edge 23 is located below the body portion of the instrument panel which is behind the HUD device 10. With such a shape and arrangement, the entire dustproof sheet 20 is hidden from view by a viewer sitting on the driver's seat.

  The light trap wall 30 is formed in a plate shape, for example, by a resin material. The light trap wall 30 is provided as a separate part from the housing 15, and is attached as a bezel to the opening periphery of the accommodation space of the instrument panel. The light trap wall 30 is provided at a position facing each front edge of the projection opening 16 and the dustproof sheet 20. The light trap wall 30 extends in the lateral direction of the vehicle A along the front edges of the projection opening 16 and the dustproof sheet 20. The light trap wall 30 is formed in an inclined posture with respect to the horizontal plane. The light trap wall 30 is provided in an inclined posture inclined to the rear of the vehicle A as it goes upward. The light trap wall 30 is shaped to overhang toward the projection opening 16 and the dustproof sheet 20.

  The lower edge 30 b of the light trap wall 30 located at the frontmost position is located below the entire dustproof sheet 20. On the other hand, the upper edge 30 a of the light trap wall 30 located at the rearmost position is located lower than the rear edge 23 of the curved reflective surface 21 and the upper edge 56 a of the lower light shielding layer 56. In other words, when the virtual plane 40 is defined to include the upper edge 30 a of the light trap wall 30 and the rear edge 23 of the dustproof sheet 20, the upper edge 56 a of the lower light shielding layer 56 is higher than the virtual plane 40. It is located in

  The light trap wall 30 is an optical wall for capturing ambient light. The reflection of light at both plate faces of the light trap wall 30 is suppressed to a very slight extent. A first nonreflective surface 31 and a second nonreflective surface 32 are formed on both plate surfaces (both surfaces) of the light trap wall 30. The first non-reflecting surface 31 and the second non-reflecting surface 32 are subjected to, for example, fine embossing or black painting or printing. With such a configuration, the first nonreflective surface 31 and the second nonreflective surface 32 can diffuse or absorb most or substantially all of the incident light. The first non-reflecting surface 31 is provided on the rear surface (lower surface) of the light trap wall 30. The first nonreflective surface 31 is opposed to the curved reflective surface 21 of the dustproof sheet 20. The second non-reflecting surface 32 is provided on the front surface (upper surface) of the light trap wall 30. The second non-reflecting surface 32 faces the lower light shielding layer 56 and is located below the reflective area 57.

  The structure which prevents that external light becomes stray light by the above structure is further demonstrated.

  A front reflection area 24 and a rear reflection area 25 are defined adjacent to each other on the curved reflective surface 21 of the dustproof sheet 20 in an arrangement in the front-rear direction. The front reflection area 24 is an area in the vicinity of the light trap wall 30 in the curved reflection surface 21 and is defined closer to the first non-reflection surface 31 than the back reflection area 25. The back reflection area 25 is an area of the curved reflection surface 21 excluding the front reflection area 24 and is defined rearward of the front reflection area 24. The area of the back reflection area 25 is secured wider than the area of the front reflection area 24. When the light trap wall 30 is viewed from the curved reflecting surface 21, the front reflection area 24 faces the first non-reflection surface 31, and the back reflection area 25 is on the back side of the first non-reflection surface 31. It faces the reflective area 57 located.

  Due to the above positional relationship, the dustproof sheet 20 reflects at least a part of the external light incident on the front reflection area 24 toward the light trap wall 30 so as to reach the first non-reflecting surface 31. The external light that has reached the first nonreflective surface 31 by the reflection of the front reflection area 24 is absorbed or diffused by the first nonreflective surface 31.

  The external light that is reflected by the front reflection area 24 and reaches the first non-reflecting surface 31 may not be all of the external light that enters the front reflection area 24 through the windshield 50. In the configuration without the light trap wall 30 and the like, the front reflection area 24 reflects at least the first non-reflection of some external light assumed to reach the eye box EB when being reflected at various places in the vehicle interior. It is reflected toward the surface 31. That is, among the external light incident through the windshield 50, a part of the other external light that does not reach the eye box EB, even if it is reflected at various places in the vehicle compartment, has a first non-reflecting surface in the front reflection area 24 It may be reflected in a direction out of 31.

  On the other hand, the dustproof sheet 20 reflects external light entering the back reflection area 25 toward the lower light shielding layer 56 above the upper edge 30 a of the light trap wall 30 so as to reach the reflection area 57. . The external light reflected by the back reflection area 25 passes above the first non-reflection surface 31, and in the reflection area 57, the second light non-reflection surface is formed by the inner surface or the lower light shielding layer 56 of the inner shield glass 52. It is further reflected towards 32. The external light that has reached the second nonreflective surface 32 due to the reflection at the reflective region 57 is absorbed or diffused by the second nonreflective surface 32.

  The external light that is reflected by the back reflection area 25 and reaches the second non-reflecting surface 32 may not be all of the external light that enters the front reflection area 24 through the windshield 50. In the configuration without the light trap wall 30 etc., the rear reflection area 25 at least the lower side light shielding layer is supposed to reach the eye box EB when it is reflected at various places in the vehicle interior. Reflect towards 56. That is, among the external light incident through the windshield 50, the other part of the external light that does not reach the eye box EB, even if it is reflected at various points in the vehicle interior, It may be reflected in a direction out of 56.

  As described above, at least a part of the external light reflected by the curved reflective surface 21 that may be viewed by reaching the eye box EB is substantially all of the first non-reflective surface 31 and the second non-reflective surface. It reaches one of the reflecting surfaces 32. The reflection of outside light by the first non-reflecting surface 31 and the second non-reflecting surface 32 is minimal or virtually non-existent. Therefore, the dustproof sheet 20, the light trap wall 30, and the reflection area 57 can prevent the outside light from reaching the eye box EB.

  The curved reflective surface 21 of the first embodiment described above allows not only the reflection of external light directed to the first non-reflecting surface 31 but also the reflection of external light directed to the reflection area 57 of the windshield 50. There is. Therefore, among the external light incident through the windshield 50, the curved reflecting surface 21 is placed on the curved non-reflecting surface 31 so that substantially all the external light that causes a possibility of visual recognition due to the reflection at the curved reflecting surface 21. There is no need to make a large curvature in the direction. Similarly, it is not necessary to secure the height of the light trap wall 30 in the vertical direction so that substantially all the external light that may cause a possibility of visual recognition due to the reflection on the curved reflective surface 21 is incident. According to the above, it is possible to loosen the curvature of the curved reflective surface 21 to reduce the dimension in the vertical direction of the curved reflective surface 21 and reduce the dimension in the vertical direction of the first non-reflective surface 31. Therefore, miniaturization of the HUD device 10 can be realized. In addition, in the first embodiment, the reflected light further reflected by the reflection area 57 is diffused or absorbed by the second non-reflecting surface 32 as described above. Therefore, even if reflection of external light directed to the reflection area 57 is permitted by the curved reflection surface 21, the reflected light reflected by the reflection area 57 becomes stray light, reaches the eye box EB, and is viewed by the viewer It is avoided that the situation.

  In the first embodiment, the second nonreflective surface 32 is formed on the back surface of the light trap wall 30 forming the first nonreflective surface 31. Therefore, even if the second non-reflecting surface 32 is required in addition to the first non-reflecting surface 31, the enlargement of the HUD device 10 is unlikely to be caused.

  Furthermore, in the first embodiment, the upper edge 56 a of the lower light shielding layer 56 is located above the virtual plane 40. With such a positional relationship, the external light reflected by the curved reflective surface 21 can reach the second non-reflective surface 32 by the reflection at the reflective region 57. Therefore, the situation where ambient light becomes stray light is avoided with higher certainty.

  In the first embodiment, after being reflected by the curved reflecting surface 21, the other part of the external light that does not reach the eye box EB even if it is further reflected at various places in the vehicle compartment is the curved reflecting surface. The light is reflected by the curved reflection surface 21 and the lower light shielding layer 56 in the direction away from both. That is, the curved reflective surface 21 causes the light trap wall 30 to supplement external light that may be viewed by a viewer. With such a configuration, the vertical dimensions of the curved reflective surface 21 and the light trap wall 30 can be further reduced.

  In addition, in the first embodiment, the HUD device 10 has a configuration in which the curved reflective surface 21 allows reflection of external light to the lower light shielding layer 56. Since the HUD device 10 is a vehicle device that projects light onto the projection area 58, it has to be placed below the windshield 50. In addition, since the projection optical system 12 is included, the vehicle device is difficult to miniaturize. Therefore, the above-mentioned configuration that enables size reduction by suppressing the vertical dimension of the curved reflecting surface 21 and the first non-reflecting surface 31 is suitable for reducing the adverse effect of external light when applied to the HUD device 10 .

  In the first embodiment, the HUD device 10 corresponds to "vehicle equipment", the projector 11 and the projection optical system 12 correspond to "superimposed projection unit", and the rear edge 23 is "upper edge of the curved reflecting surface" It corresponds to In addition, the light trap wall 30 corresponds to the "external light supplementary wall", the first non-reflecting surface 31 corresponds to the "low reflection wall surface", and the second non-reflecting surface 32 corresponds to the "external light reaching wall surface" The lower light shielding layer 56 corresponds to the “light shielding portion”, and the eye box EB corresponds to the “expected area”.

Second Embodiment
The second embodiment of the present disclosure shown in FIG. 4 is a modification of the first embodiment. In the HUD device 210 of the second embodiment, the shape of the light trap wall 230 is different from that of the first embodiment. The light trap wall 230 of the second embodiment is a bezel member formed of a resin material or the like as in the first embodiment, and has a lower trap wall portion 231 and an upper trap wall portion 232. The lower trap wall portion 231 and the upper trap wall portion 232 are each formed in a plate shape extending in the lateral direction of the vehicle A. The lower trap wall portion 231 and the upper trap wall portion 232 are integrally formed, and are continuous with each other at each trailing edge portion.

  The lower trap wall portion 231 is provided in an inclined posture inclined rearward of the vehicle A as it goes upward. On the rear surface (lower surface) of the lower trap wall portion 231, a first non-reflective surface 31 substantially the same as the first embodiment is formed. The first non-reflection surface 31 faces the front reflection area 24 of the curved reflection surface 21 and is inclined along the reflection area 57.

  The upper trap wall 232 is provided in an inclined posture slightly inclined upward as going to the rear of the vehicle A. Due to the attitude of the upper trap wall portion 232, the front edge 230b of the light trap wall 230 located at the frontmost position is located below the upper edge 30a of the light trap wall 230 located at the rearmost position. . In addition, the upper edge 30 a of the light trap wall 230 is located below the trailing edge 23 of the dustproof sheet 20. When the virtual plane 40 is defined to include the upper edge 30 a of the light trap wall 230 and the rear edge 23 of the dustproof sheet 20, the upper edge 56 a of the lower light shielding layer 56 is located above the virtual plane 40.

  On the upper surface of the upper trap wall portion 232, a second non-reflective surface 32 substantially the same as the first embodiment is formed. The second non-reflecting surface 32 is provided between the first non-reflecting surface 31 and the lower light shielding layer 56, and faces the reflective region 57 in the vertical direction. The second non-reflecting surface 32 is inclined with respect to the first non-reflecting surface 31 and the lower light shielding layer 56, and is slightly inclined forward with respect to the horizontal surface.

  In the above configuration, outside light entering the front reflection area 24 in the curved reflecting surface 21 is reflected toward the lower trap wall portion 231. Then, the external light that has reached the lower trap wall portion 231 is absorbed or diffused by the first non-reflecting surface 31. On the other hand, outside light entering the back reflection area 25 in the curved reflecting surface 21 is reflected toward the lower light shielding layer 56 above the light trap wall 230 and passes above the first non-reflecting surface 31. To reach the reflective area 57. The reflected light reflected by the inner surface of the inner shield glass 52 or the lower light shielding layer 56 in the reflective region 57 reaches the upper trap wall portion 232 and is absorbed or diffused by the second nonreflective surface 32.

  Also in the second embodiment described so far, external light causing a possibility of visual recognition due to reflection on the curved reflective surface 21 is substantially all of the first non-reflective surface 31 and the second non-reflective surface 32 as in the first embodiment. It is suppressed that it reaches either of, and becomes a stray light. The combined use of the first non-reflecting surface 31 and the second non-reflecting surface 32 reduces the curvature of the curved reflecting surface 21 to reduce the dimension of the curved reflecting surface 21 in the vertical direction, and the dimension of the first non-reflecting surface 31 in the vertical direction It becomes possible to reduce. Therefore, miniaturization of the HUD device 210 is realized.

  In addition, in the second embodiment, the second non-reflective surface 32 is provided in a posture different from that of the first non-reflective surface 31. Thus, if the attitudes of the first non-reflecting surface 31 and the second non-reflecting surface 32 can be defined individually, the second non-reflecting surface 32 appropriately reflects the reflected light reflected by the reflection region 57. It can be provided at a supplementary position and posture. Therefore, the situation where the reflected light reflected by the reflection area 57 becomes stray light and is visually recognized by the viewer is further avoided. In the second embodiment, the HUD device 210 corresponds to the “vehicle device”.

Third Embodiment
The third embodiment of the present disclosure shown in FIG. 5 is another modification of the first embodiment. In the third embodiment, the display system 300 including the main HUD display 310 and the sub HUD display 110 is accommodated in the accommodation space in the instrument panel. The virtual image display by the display system 300 is controlled by the display control device 100. The display system 300 forms and displays the AR virtual image 370 and the status virtual image 170 in different spaces. The AR virtual image 370 is imaged above the status virtual image 170 as viewed by the viewer. The AR virtual image 370 is imaged at a position farther from the windshield 50 than the status virtual image 170.

  The main HUD display 310 has substantially the same configuration as the substantially identical HUD device 10 (see FIG. 1). The main HUD display 310 has an AR projector 311 and an AR optical system 312 for displaying an AR virtual image 370. The AR projector 311 and the AR optical system 312 correspond to the projector 11 (see FIG. 3) and the projection optical system 12 (see FIG. 3) of the first embodiment, respectively. The AR projector 311 and the AR optical system 312 project the light of the AR virtual image 370 superimposed on the foreground onto the projection area 58 defined by the windshield 50 while transmitting the curved reflective surface 21 of the dustproof sheet 20.

  The sub HUD display 110 is mounted in front of the vehicle A than the main HUD display 310. The sub HUD display 110 is disposed between the main HUD display 310 and the cowl top member of the vehicle A or the like. The sub HUD display 110 is disposed below the lower light shielding layer 56 and is covered above by the lower light shielding layer 56. The sub HUD display 110 has a liquid crystal display 111 and a dustproof sheet 120. The liquid crystal display 111 projects the light of the status virtual image 170 from the lower side of the lower light shielding layer 56 toward the region where the lower light shielding layer 56 is provided by the windshield 50. The light emitted from the liquid crystal display 111 is reflected toward the eyebox EB in substantially the same area as the reflection area 57. The dustproof sheet 120 is formed in a flat plate shape from a resin material such as acryl and polycarbonate or a light transmitting material such as glass.

  Also in the third embodiment described so far, outside light reflected by the rear reflection area 25 in the curved reflection surface 21 of the main HUD display 310 is further reflected by the reflection area 57 and the second non-reflection The surface 32 is absorbed or diffused. Therefore, it becomes possible to loosen the curvature to reduce the vertical dimension of the curved reflective surface 21 and to reduce the vertical dimension of the first non-reflective surface 31. Therefore, miniaturization of the main HUD display 310 can be realized.

  In addition, in the third embodiment, the sub-HUD display 110 is disposed below the lower light shielding layer 56. With such a configuration, the irradiation of external light to the dustproof sheet 120 does not substantially occur. Therefore, it becomes possible to form the dustproof sheet 120 in the sub HUD display 110 in a flat plate shape. Therefore, miniaturization of the sub-HUD display 110 is further realized.

  In the third embodiment, the display system 300 corresponds to “vehicle equipment”, the AR projector 311 and the AR optical system 312 correspond to “first projection unit”, and the AR virtual image 370 is “first virtual image”. Equivalent to. Furthermore, the liquid crystal display 111 corresponds to a "second projection unit", and the status virtual image 170 corresponds to a "second virtual image".

Fourth Embodiment
The fourth embodiment of the present disclosure shown in FIG. 6 is still another modification of the first embodiment. The windshield 50 of the fourth embodiment is installed in a posture closer to the vertical direction than the first embodiment. In other words, the back slope of the windshield 50 of the fourth embodiment is smaller than that of the first embodiment. Therefore, the upper edge 56 a of the lower light shielding layer 56 is defined at a high position with respect to the HUD device 410. Corresponding to the attitude of the windshield 50, in the fourth embodiment, the shapes and positional relationships of the light trap wall 430 and the dustproof sheet 420 are different from those in the first embodiment.

  The light trap wall 430 is provided in a posture along the windshield 50, as in the first embodiment. Therefore, the light trap wall 430 is erected in a posture closer to the vertical than in the first embodiment.

  In the curved reflecting surface 21 formed on the dustproof sheet 420, the curvature of the back reflection area 25 is smaller (more loose) than in the first embodiment. That is, the dustproof sheet 420 has a curved shape close to a flat plate as compared to the dustproof sheet 20 (see FIG. 3). As a result, the trailing edge 23 of the dustproof sheet 420 is positioned substantially at the same height as the upper edge 30 a of the light trap wall 430 or below the upper edge 30 a. Therefore, the virtual plane 40 defined to include the upper edge 30a of the light trap wall 430 and the rear edge 23 of the dustproof sheet 420 is in a posture along the horizontal surface or in a posture slightly backward with respect to the horizontal surface. Also in the fourth embodiment, the upper edge 56 a of the lower light shielding layer 56 is located above the virtual plane 40.

  As in the fourth embodiment described above, the curved shape of the dustproof sheet 420 can be appropriately changed according to the attitude of the windshield 50. Then, as the postures of the windshield 50 and the light trap wall 430 approach vertical, the dustproof sheet 420 can be made closer to a flat plate shape. In addition, even if the curvature of the curved reflecting surface 21 approaches a flat plate, the external light reflected by the back reflecting area 25 is further reflected by the reflecting area 57 and absorbed or diffused by the second non-reflecting surface 32. Be done. Therefore, also in the fourth embodiment, the size of the dustproof sheet 420 in the vertical direction can be reduced, and the HUD device 410 can be miniaturized. In the fourth embodiment, the HUD device 410 corresponds to the "vehicle device", and the light trap wall 430 corresponds to the "external light supplement wall".

(Fifth embodiment)
The fifth embodiment of the present disclosure shown in FIG. 7 is a modification of the second embodiment. The light trap wall 530 of the fifth embodiment is formed to have an L-shaped cross section. In the light trap wall 530, the upper trap wall portion 532 is inclined slightly downward toward the rear which is a continuous portion with the lower trap wall portion 231. Therefore, the front edge 530b of the light trap wall 530 located at the frontmost position is located above the rear edge 530a of the light trap wall 530 located at the rearmost position.

  A second nonreflective surface 32 is provided on the upper surface of the upper trap wall portion 532 so as to be located between the first nonreflective surface 31 and the lower light shielding layer 56. The angle between the second non-reflecting surface 32 and the reflective area 57 is an acute angle slightly smaller than 90 °. The second non-reflecting surface 32 is opposed to the reflective area 57 in an oblique orientation, and allows the light reflected by the reflective area 57 to be incident, absorbed or diffused.

  Also in the above fifth embodiment, as in the second embodiment, the curvature of the curved reflective surface 21 is loosened by using the first nonreflective surface 31 and the second nonreflective surface 32 in combination, and the vertical direction of the curved reflective surface 21 is obtained. The size reduction and the size reduction of the first non-reflection surface 31 in the vertical direction are possible. Therefore, miniaturization of the HUD device 510 is realized. In the fifth embodiment, the HUD device 510 corresponds to the “vehicle device”.

Sixth Embodiment
The sixth embodiment of the present disclosure shown in FIG. 8 is another modification of the second embodiment. In the light trap wall 630 of the sixth embodiment, the lower trap wall portion 631 and the upper trap wall portion 632 are each not curved but slightly curved. Therefore, the first non-reflective surface 31 formed on the rear surface of the lower trap wall portion 631 has a curved surface shape that is slightly convex rearward and downward. The second non-reflecting surface 32 formed on the upper surface of the upper trap wall portion 632 has a curved surface shape that is slightly convex toward the upper reflecting region 57.

  As in the above-described sixth embodiment, even if the first non-reflecting surface 31 and the second non-reflecting surface 32 are not planar, they can absorb or diffuse the reached external light. Therefore, similarly to the second embodiment, the combined use of the first non-reflecting surface 31 and the second non-reflecting surface 32 loosens the curvature of the curved reflecting surface 21 to reduce the size of the curved reflecting surface 21 in the vertical direction, and The vertical dimension of the non-reflecting surface 31 can be reduced. Therefore, miniaturization of the HUD device 610 is realized. In the sixth embodiment, the HUD device 610 corresponds to the “vehicle device”.

(Other embodiments)
As mentioned above, although a plurality of embodiments of this indication were described, this indication is not interpreted by limiting to the above-mentioned embodiment, and it is applied to various embodiments and combination within the range which does not deviate from the gist of this indication. can do.

  In still another modification 1 of the first embodiment, as shown in FIG. 9, the distance in the vertical direction between the windshield 50 and the HUD device 710 is secured larger than in the first embodiment. That is, the upper surfaces of the HUD device 710 and the instrument panel are provided at a position lower than the windshield 50 than in the first embodiment. As a result, the upper edge 56 a of the lower light shielding layer 56 is defined at a relatively high position with respect to the HUD device 710.

  In the first modification described above, the back reflection area 25 can be allowed to reflect light forward and upward. Therefore, the curvature of the back reflection area 25 can be relaxed to make the shape of the curved reflection surface 21 closer to a planar shape. According to the above, since the dustproof sheet 20 can be further thinned, further downsizing of the HUD device 710 can be realized.

  In the said embodiment, the light shielding layer was provided with the intermediate film between outer shield glass and inner shield glass. However, the light shielding layer may be formed on the outer surface of the windshield or may be formed on the outer surface of the windshield. Alternatively, the light shielding layer may be provided between the outer shield glass and the intermediate film, and may be integrally provided in the intermediate film which is a multilayer. In addition, the light shielding layer may be formed of another reflective material instead of black ceramic or the like.

  Here, in the windshield 50, the upper edge 56a of the lower light shielding layer 56 may be defined at a low position so as not to block the view. Therefore, the lower light shielding layer 56 of Modification 2 shown in FIG. 10 is formed by electrochromic. The light transmittance of the lower light shielding layer 56 is adjusted to a lower value as the amount of external light around the vehicle increases, for example, based on the detection result of the illuminance sensor 80. As described above, the upper edge 56a may be defined upward by providing the lower light-shielding layer 56 that can be adjusted by light, and a thinner dust-proof sheet may be realized. In addition, the transmittance | permeability of electrochromic may be switching by a manual switch.

  Furthermore, the lower light shielding layer 56 of the third modification shown in FIGS. 11 and 12 is formed of a louver film 856. The louver film 856 may be provided between the outer shield glass 51 and the inner shield glass 52 as an intermediate layer, or may be attached to the inside of the windshield 50. In the louver film 856, non-transmissive portions 856a in an inclined posture are disposed at a fine pitch. The louver film 856 blocks light rays such as sunlight emitted from above. On the other hand, light rays incident on the windshield 50 from the front can be transmitted through the louver film 856. By adopting such a louver film 856, further thinning of the dustproof sheet may be realized also by defining the upper edge 56a upward.

  The HUD device of the above embodiment displays a display image of a virtual image by a liquid crystal projector or an organic EL projector. However, the display light image drawn on the screen using a laser projector including a laser module and a scanner may be projected on the projection area by the projection optical system. Furthermore, instead of the laser projector, a projector mainly made of DLP (Digital Light Processing (registered trademark)) may be adopted.

  In the third embodiment, the sub HUD display 110 and the main HUD display 310 are separated. However, it may be a HUD device in which the sub HUD display and the main HUD display are integrally configured. That is, a projection unit including an AR projector and an AR optical system and a projection unit mainly composed of a liquid crystal display may be accommodated in one housing.

  In the second embodiment and the like, the lower trap wall portion and the upper trap wall portion are integrally formed. However, the lower trap wall and the upper trap wall may be provided as separate light trap walls. Furthermore, as long as the first non-reflecting surface and the second non-reflecting surface are non-reflective surface states that do not substantially reflect light, the configuration may be changed as appropriate.

  The curvature of the curved reflective surface of the above embodiment was a shape based on a parabola. However, the curved shape of the curved reflective surface may be, for example, a cylindrical shape or a free curved surface. Furthermore, the entire outer surface of the dustproof sheet may not be a curved reflecting surface, and the curved reflecting surface may be a part of the outer surface of the dustproof sheet. Specifically, an external light reflecting surface is provided in the outer surface of the dustproof sheet in a range excluding the curved reflective surface, so as to reflect external light so as not to reach the eye box EB even if it is reflected at various places in the vehicle interior. It may be done.

  In the above-mentioned embodiment, the example which applied composition, such as a curved reflective surface and a light trap wall by this indication, to a HUD device as equipment for vehicles was explained. However, the above-described configuration can be adopted as appropriate to vehicle devices other than the HUD device.

A Vehicle, EB eye box (expected area), 10, 210, 410, 510, 610, 710 HUD device (vehicle device), 300 display system (vehicle device), 11 projector (superimposed projection unit), 111 liquid crystal display Device (second projection unit), 311 AR projector (first projection unit), 12 projection optical system (superimposed projection unit), 312 AR optical system (first projection unit), 21 curved reflecting surface, 23 trailing edge (upper edge) ), 30, 230, 430, 530, 630 Light trap wall (external light supplementary wall), 31 first non-reflecting surface (low reflection wall), 32 second non-reflecting surface (external light reaching wall), 40 virtual plane, 50 windshield, 56 lower light shielding layer (light shielding part) 56a upper edge, 57 reflection area, 58 projection area, 70 virtual image, 170 status virtual image (second virtual image), 370 AR virtual image (first image) virtual image)

Claims (8)

A vehicle device disposed below a windshield (50) in a vehicle (A), comprising:
A low-reflecting wall surface (31) which is inclined rearward as it goes upward of the vehicle and is formed to diffuse or absorb light;
The curved shape is curved upward as it goes away from the low reflection wall to the rear of the vehicle, and at least a portion of external light incident through the windshield is provided to the low reflection wall and the lower edge portion of the windshield And a curved reflecting surface (21) that reflects toward any of the light shielding portions (56).   Of the external light reflected by the curved reflective surface, the external light reaching wall surface (32) formed to diffuse or absorb the reflected light further reflected by the reflection area (57) provided with the light shielding portion The vehicle apparatus according to claim 1, further comprising   The vehicle apparatus according to claim 2, wherein the low reflection wall surface and the outside light reaching wall surface are provided on both sides of a plate-shaped outside light supplement wall (30, 430).   The vehicle device according to claim 2, wherein the outside light reaching wall surface is provided between the low reflection wall surface and the light shielding portion in a posture inclined with respect to the low reflection wall surface.   The upper edge (56a) of the light shielding portion is located above a virtual plane (40) defined to include the upper edge (30a) of the low reflection wall and the upper edge (23) of the curved reflective surface. The apparatus for vehicles as described in any one of Claims 1-4.   Among the external light incident through the windshield, the curved reflective surface does not reach an assumed area (EB) where it is assumed that the eyes of the passenger of the vehicle are located, even if it is reflected at various places in the vehicle compartment The vehicle apparatus according to any one of claims 1 to 5, wherein external light of a portion of the light is reflected in a direction deviated from both the low reflection wall surface and the light shielding portion.   The light of the virtual image (70) superimposed and displayed on the foreground of the vehicle is transmitted through the curved reflecting surface toward the projection region (58) defined in the region different from the light shielding portion in the windshield. The vehicle apparatus according to any one of claims 1 to 6, which is a virtual image display device further including a superimposed projection unit (11, 12) that projects while projecting. The light of the first virtual image (370) superimposed and displayed on the foreground is transmitted through the curved reflecting surface toward the projection area (58) defined in the area different from the light shielding part in the windshield. A second projection for projecting the light of a second virtual image (170) from below the light shielding portion toward the area where the light shielding portion is provided by the first projection portion (311, 312) to be projected and the windshield by the windshield The vehicle apparatus according to any one of claims 1 to 6, which is a virtual image display device further comprising: a section (111).

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