WO2017043292A1

WO2017043292A1 - Display device for vehicle

Info

Publication number: WO2017043292A1
Application number: PCT/JP2016/074315
Authority: WO
Inventors: 盛吾種
Original assignee: 株式会社デンソー
Priority date: 2015-09-08
Filing date: 2016-08-22
Publication date: 2017-03-16

Abstract

A display device 100 for a vehicle is provided with a light emitting display unit 20 for emitting display light on a visual recognition side, a first reflecting unit 31 positioned so that at least a portion overlaps the light emitting display unit 20 toward the visual recognition side beyond the light emitting display unit 20 to reflect display light from a portion overlapping the light emitting display unit 20, a second reflecting unit 33 positioned at a position to avoid overlapping the light emitting display unit 20 to reflect to the visual recognition side the display light reflected by the first reflecting unit 31, and a slide mechanism 40 for sliding and moving the first reflecting unit 31 and thereby changing the overlapping position of the first reflecting unit 31 relative to the light emitting display unit 20.

Description

Vehicle display device

Cross-reference of related applications

This application is based on Japanese Application No. 2015-176929 filed on September 8, 2015, and Japanese Application No. 2016-148204 filed on July 20, 2016, the contents of which are described herein. Is used.

The present disclosure relates to a vehicle display device mounted on a vehicle.

Conventionally, a vehicle display device mounted on a vehicle is known. The vehicle display device disclosed in Patent Literature 1 includes a light emitting display unit that emits display light to the viewing side, and a slide mechanism that slides the light emitting display unit. When the light emitting display unit moves to the uppermost side by such a sliding mechanism, the first reflecting unit reflects display light from the portion of the light emitting display unit that overlaps the first reflecting unit, and the second reflecting unit performs the first reflection. The display light reflected by the part is reflected to the viewing side.

JP 2014-201213 A

However, in Patent Document 1, when the light-emitting display unit moves downward, the first reflective unit and the light-emitting display unit may be completely displaced, and a virtual image display using the first reflective unit and the second reflective unit. Becomes impossible, and visibility decreases. In addition, when the light emitting display unit moves upward, there is nothing on the lower side of the device, so that the real image display at the lower side becomes impossible, not only the visibility is lowered, but also the back of the device is visible and looks good. It was bad.

Summary of disclosure

The present disclosure is intended to provide a display device for a vehicle that has good appearance and visibility even when slide movement is involved.

In the first aspect of the present disclosure, the vehicle display device includes a light-emitting display unit that emits display light on the viewing side. The vehicular display device includes a first reflecting portion that is arranged so as to overlap at least partly with the light emitting display portion on the viewing side with respect to the light emitting display portion, and reflects display light from the overlapped portion of the light emitting display portion. And further. The vehicular display device further includes a second reflecting unit that is disposed at a position avoiding overlapping with the light emitting display unit and reflects the display light reflected by the first reflecting unit to the viewing side. The vehicular display device further includes a slide mechanism that changes the overlapping position of the first reflection unit with respect to the light emitting display unit by sliding the first reflection unit.

The above and other objects, features and advantages of the present disclosure will become more apparent from the following detailed description with reference to the accompanying drawings. The drawing
It is a front view showing typically the display for vehicles in a 1st embodiment, FIG. 2 is a schematic diagram showing a cross section taken along line II-II in FIG. It is a perspective view which shows the light guide member in 1st Embodiment, It is a front view which shows the light guide member in 1st Embodiment, It is a front view which shows typically the display apparatus for vehicles in a 2nd embodiment, It is a figure corresponding to FIG. 2 in 3rd Embodiment, It is a figure which shows the light source part in 3rd Embodiment, FIG. 8 is a partially enlarged cross-sectional view showing the lenticular element partially enlarged in the cross-section taken along line VIII-VIII in FIG. 6; It is a partial front view which shows the additional display part in 3rd Embodiment, It is a figure corresponding to Drawing 2 in modification 1, It is a figure corresponding to Drawing 2 in modification 2, It is a perspective view which shows the light guide member in the modification 2, and It is a figure corresponding to FIG.

Hereinafter, a plurality of embodiments of the present disclosure will be described with reference to the drawings.

In addition, the overlapping description may be abbreviate | omitted by attaching | subjecting 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 embodiment described above can be applied to the other part of the configuration. In addition, not only combinations of configurations explicitly described in the description of each embodiment, but also the configurations of a plurality of embodiments can be partially combined even if they are not explicitly specified unless there is a problem with the combination. .

(First embodiment)
As shown in FIGS. 1 and 2, the vehicle display device 100 according to an embodiment of the present disclosure is mounted on an instrument panel 2 of the vehicle. A windshield 5 of the vehicle is installed above the instrument panel 2 above the vehicle. The windshield 5 is formed of glass or synthetic resin so as to be translucent. A viewer (for example, a driver) sitting on a vehicle seat located on the viewer side of the vehicle display device 100 can visually recognize the background including the road and the road sign through the windshield 5.

The instrument panel 2 is provided with a real image opening 3 that opens to the viewing side, and a virtual image opening 4 that opens above the vehicle and faces the windshield 5. The vehicle display device 100 performs display on the viewing side through the real image opening 3 and the virtual image opening 4. The displayed information includes vehicle state quantities such as vehicle speed, engine speed, fuel remaining amount, engine coolant water temperature, electric motor current value, shift change, odometer value, trip meter value, etc. Can be mentioned. Or as information displayed, various information, such as an alarm, road information, visibility assistance information, an e-mail, is mentioned, for example.

Here, in this embodiment, when the vehicle travels on a flat ground or stops on a flat ground, the direction in which gravity is generated is defined as the vehicle lower direction, and the opposite direction of the vehicle lower direction is defined as the vehicle upper direction. Furthermore, the left direction viewed from the viewer who is seated on the seat and visually recognizes the display of the device 100 and the background through the windshield 5 is the left side of the vehicle, and the right direction is the right side of the vehicle. Furthermore, the vehicle lower direction and the vehicle upper direction are combined to be the vehicle vertical direction, and the vehicle left side and the vehicle right side are combined to be the vehicle horizontal direction. In addition, the vehicle upper side and the vehicle lower side may be simply referred to as “upper” and “lower” in the following.

The configuration of such a vehicle display device 100 will be described in detail below. The vehicle display device 100 mainly includes a pointer display unit 10, a light emitting display unit 20, a light guide member 30, a slide mechanism 40, a partition plate 50, and a control unit 60.

As shown in FIG. 1, the pointer display unit 10 is disposed so as to be directly visible from the viewing side through the real image opening 3 at two positions sandwiching the light emitting display unit 20 in the left-right direction of the vehicle. The pointer display unit 10 includes

display plates

12a and 12b and

pointers

15a, 15b, and 15c.

Each of the

display plates

12a and 12b is generally called a dial plate. For example, a light-shielding printing layer or a semi-transparent printing layer is formed on the surface of a plate-like substrate made of a translucent resin. It has a flat plate shape. Then, the

indicators

13a, 13b, and 13c are formed on each display board by drawing scales, letters, and other shapes on the printed layer.

The indicators 13a to 13c are lit and displayed by being illuminated by the indicator light source from the back side opposite to the viewing side. In particular, in the present embodiment, an indicator 13a indicating fuel efficiency is formed on the display plate 12a on the left side of the vehicle, and an indicator 13b indicating the remaining amount of fuel and an indicator 13c indicating the coolant temperature of the engine coolant on the display plate 12b on the right side of the vehicle. Is formed.

The pointers 15a to 15c are needle-like members arranged on the viewing side with respect to the display plates 12a to 12b. The pointers 15a to 15c are provided through the display plates 12a to 12b by driving the pointer stepping motors disposed on the back side of the display plates 12a to 12b corresponding to the pointers 15a to 15c. It is designed to rotate around the rotation axis. By indicating each of the indicators 13a to 13c with the tips of the pointers 15a to 15c lit, the pointer display unit 10 can perform display using the pointer on the viewing side.

As shown in FIGS. 1 and 2, the light emitting display unit 20 is disposed at the center of the apparatus sandwiched between the pointer display units 10. The light-emitting display unit 20 of the present embodiment is an image display panel that displays an image, and is formed of a plurality of liquid crystal pixels arranged in a two-dimensional direction along the display surface 22 using thin film transistors (Thin Film Transistors, TFTs). This is an active matrix type liquid crystal panel. A backlight unit 24 is disposed on the lower side edge of the light emitting display unit 20 in the lateral direction of the vehicle. The backlight unit 24 is composed of a plurality of LED elements, and emits light under the control of the LED circuit board 25 via an electronic circuit. The light transmittance from the backlight unit 24 through the light guide plate 26 is controlled for each liquid crystal pixel, so that the light emitting display unit 20 displays an image by emitting display light to the viewing side through the display surface 22. It is possible. Further, the liquid crystal circuit board 28 described in FIG. 2 is mounted with an electronic circuit, and controls the transmittance of the liquid crystal pixels described above.

Here, the light emitting display unit 20 is long in the vertical direction of the vehicle in order to avoid that the two pointer display units 10 are separated from each other and difficult to see. Therefore, the display surface 22 of the light-emitting display unit 20 has a rectangular shape in which the short side direction is arranged along the vehicle left-right direction and the long side direction is arranged along the vehicle up-down direction.

On the lower side of the light emitting display unit 20 below the vehicle, the exposed portion of the display surface 22 sandwiched between the two pointer display units 10 can be directly viewed from the viewing side through the real image opening 3. Thus, a real image display is performed in the exposed portion. In particular, in the present embodiment, an image showing the vehicle speed and the engine speed is displayed as a real image on the exposed portion. On the other hand, the display surface 22 is hidden by the instrument panel 2 on the upper side of the light emitting display unit 20 that is above the vehicle, and is not directly visible from the viewing side.

As shown in FIGS. 3 and 4, the light guide member 30 integrally includes a first reflecting portion 31, a second reflecting portion 33, and a connecting portion 35. The first reflecting portion 31 is formed using a translucent resin such as an acrylic resin as a base material, and is disposed on the viewing side with respect to the light emitting display portion 20. The first reflecting portion 31 is disposed so as to at least partially overlap the light emitting display portion 20 in a front view as shown in FIG. The 1st reflection part 31 has the reflective surface 31a by vapor-depositing and forming thin metal films, such as aluminum, in the partial surface of a base material. As shown in FIG. 2, the reflecting surface 31 a faces obliquely upward on the back side and faces the display surface 22 in a posture inclined by, for example, 45 ° with respect to the display surface 22 of the light emitting display unit 20. Thereby, the reflection surface 31 a of the first reflection part 31 reflects the display light from the overlapped part of the display surface 22 toward the second reflection part 33. In more detail, the reflective surface 31a of this embodiment is a rectangular shape whose longitudinal direction is along the vehicle left-right direction, and is formed in a cylindrical surface shape that is convexly curved in the vehicle left-right direction.

The second reflecting portion 33 is formed using a translucent resin such as acrylic resin as a base material, and is a position above the vehicle with respect to the first reflecting portion 31 and the instrument panel 2, with respect to the light emitting display portion 20. Are placed in a position that avoids overlapping. The second reflecting portion 33 has a reflecting surface 33a by depositing a thin metal film such as aluminum on a partial surface of the substrate. The reflective surface 33a faces obliquely downward on the viewing side, which is directly opposite to the reflective surface 31a of the first reflective portion 31, and faces the reflective surface 31a with the virtual image opening 4 interposed therebetween while shifting the central portion from each other in parallel. Yes. Thereby, the reflecting surface 33a of the second reflecting portion 33 is reflected by the first reflecting portion 31 and reflects the display light that has passed through the virtual image opening 4 to the viewing side. More specifically, the reflecting surface 33a of the second reflecting portion 33 of the present embodiment has a larger surface area than the reflecting surface 31a of the first reflecting portion 31, and has a rectangular shape whose longitudinal direction is along the vehicle left-right direction. A cylindrical surface that is concavely curved in the vehicle left-right direction is formed.

Further, the reflecting surface 33a of the second reflecting portion 33 functions as a half mirror portion because the thickness of the metal film is set to be thinner than the reflecting surface 31a of the first reflecting portion 31. Thereby, the reflective surface 33a further transmits the above-described background transmitted through the windshield 5 from the back side to the viewing side.

Note that a dielectric multilayer film may be employed for each of the reflection surfaces 31a and 33a instead of the metal film.

The connecting part 35 has a left connecting plate part 35a and a right connecting plate part 35b as shown in FIGS. The left connecting plate portion 35 a connects the left end of the first reflecting portion 31 and the left end of the second reflecting portion 33. The right connecting plate portion 35 b connects the right end of the first reflecting portion 31 and the right end of the second reflecting portion 33. Thus, the connecting portion 35 does not interfere with the display light passing through the back side of the first reflecting portion 31, the virtual image opening portion 4, and the visual recognition side of the second reflecting portion 33, and the first reflecting portion 31 and the first reflecting portion 31. The two reflecting portions 33 are integrally connected.

Thus, as shown in FIG. 2, the display light from the portion of the display surface 22 of the light emitting display unit 20 that overlaps the reflection surface 31 a of the first reflection unit 31 is transmitted to the first reflection unit 31 and the second reflection unit 33. Reflected and displayed as a virtual image. Thus, the light guide member 30 guides the display light from the overlapped portion. In particular, in the present embodiment, as shown in FIG. 1, for example, navigation information that prompts a left turn after 200 m is displayed as a virtual image. Here, due to the shape of each of the reflection surfaces 31 a and 33 a described above, in the virtual image display, the left-right direction of the vehicle corresponding to the short direction of the display surface 22 is enlarged more than the corresponding real image on the display surface 22.

As shown in FIGS. 1 and 2, the slide mechanism 40 emits light by sliding the light guide member 30 integrally provided with the first reflecting portion 31 and the second reflecting portion 33 in the vehicle vertical direction. This is a mechanism for changing the overlapping position of the first reflecting portion 31 with respect to the portion 20. Specifically, the slide mechanism 40 includes a stepping motor 40a, a gear 40b, a screw shaft 40c, and a bearing portion 40d.

The stepping motor 40a is disposed on the right side of the vehicle with respect to the light emitting display unit 20, for example. The stepping motor 40a can rotate the rotating shaft by an electrical signal from the electrically connected control unit 60. The gear 40b is connected to the rotation shaft of the motor 40a and rotates together with the rotation shaft. The screw shaft 40c meshes with the gear 40b with the axial direction along the vehicle vertical direction. The bearing portion 40d is fixed to, for example, the right connecting plate portion 35b of the light guide member 30, and also supports the screw shaft 40c. Thus, when the screw shaft 40c rotates with the rotation of the gear 40b by the stepping motor 40a, the bearing portion 40d slides in the axial direction of the screw shaft 40c, so that the light guide member 30 slides along the vehicle vertical direction.

Thus, when the first reflecting portion 31 and the second reflecting portion 33 slide and move along the vehicle vertical direction, the overlapping position of the first reflecting portion 31 with respect to the light emitting display portion 20 changes. For example, in a state where the entire first reflection unit 31 overlaps the light emitting display unit 20, if the overlapping position moves upward in the vehicle, the second reflection unit 33 also slides upward in the vehicle, so that the position of the virtual image display is Move up the vehicle. Further, when the overlapping position moves upward of the vehicle, only a part of the first reflecting portion 31 is overlapped with the light emitting display portion 20, and the area of the virtual image display is reduced. From this state, when the overlapping position moves downward in the vehicle, the area of the virtual image display increases. When the overlapping position further moves downward in the vehicle, the entire first reflecting portion 31 overlaps the light emitting display portion 20, and the virtual image display area does not change and the virtual image display position only moves downward in the vehicle. Become.

As shown in FIG. 2, the partition plate 50 is formed in a plate shape having a light shielding property using, for example, black synthetic resin, and a portion of the light emitting display unit 20 that overlaps the first reflection unit 31 and the first reflection unit 31. The part which has shifted is divided. The partition plate 50 has an opposing end 52 that faces the display surface 22 with a slight gap so as to divide the display surface 22 of the light emitting display unit 20 into an upper part and a lower part. Such an opposed end 52 suppresses the display light from the portion overlapping the first reflecting portion 31 from leaking to the lower side of the vehicle, and the display light from the portion shifted from the first reflecting portion 31 leaks to the upper side of the vehicle. It is suppressed.

The partition plate 50 is provided with a movable mechanism 54. The movable mechanism 54 includes a movable shaft 54a, a hinge 54b, and a spring 54c. The movable shaft 54a extends along the left-right direction of the vehicle on the viewing side with respect to the opposed end portion 52 of the partition plate 50. Both ends of the movable shaft 54 a reach the left and right ends 50 a of the partition plate 50. Here, the partition plate 50 is separated from the real image opening 3 by the formation of cracks at the left and right ends 50a. The hinge 54b connects the partition plate 50 and the real image opening 3 with the movable shaft 54a interposed therebetween. The spring 54 c connects the virtual image opening 4 side of the instrument panel 2 and the partition plate 50. The partition plate 50 is suspended by the spring 54c while being held by the hinge 54b.

When the first reflecting portion 31 is slid by the slide mechanism 40, the rear side of the partition plate 50 with respect to the movable shaft 54a is rotated around the movable shaft 54a, so that the opposed end portion 52 is interlocked with the slide movement. Move. For example, when the first reflecting portion 31 moves downward in the vehicle, the facing end portion 52 of the partition plate 50 is pushed by the first reflecting portion 31, so that the facing end portion 52 moves downward in the vehicle. When the first reflecting portion 31 moves upward in the vehicle, the opposing end portion 52 returns to the original position by the restoring force of the spring 54c.

The control unit 60 is an electronic circuit configured by mounting a CPU 62, a memory unit 64, and the like on a substrate. The CPU 62 can execute various processes by executing computer programs stored in the memory unit 64.

Particularly in this embodiment, the control unit 60 can communicate with the various sensors 7 of the vehicle, and can control the slide mechanism 40 in accordance with electric signals from the various sensors 7. For example, as the speed of the vehicle increases, the overlapping position is moved upwards of the vehicle to alert the user.

Further, the control unit 60 can adjust the virtual image display according to the viewer's preference by controlling the slide mechanism 40 in accordance with a manual input signal from the switch 8 or the like by the viewer.

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

According to the first embodiment, the first reflecting portion 31 is arranged at least partially overlapping the light emitting display portion 20 on the viewing side with respect to the light emitting display portion 20, and the second reflecting portion 33 is disposed on the light emitting display portion 20. On the other hand, it is arranged at a position that avoids overlapping. Here, when the light emitting display unit 20 emits display light to the viewing side, the display light from the portion overlapping the first reflecting unit 31 is reflected by the first reflecting unit 31 and the second reflecting unit 33 to emit light. A virtual image can be displayed at a position outside the display unit 20. On the other hand, display light from a portion of the light emitting display unit 20 that avoids overlapping with the first reflecting unit 31 is emitted to the viewing side, and real image display is possible.

Furthermore, the first reflecting unit 31 is slid by the slide mechanism 40, and the overlapping position of the first reflecting unit 31 with respect to the light emitting display unit 20 can be changed. Therefore, it is possible to change the distribution of the area used for virtual image display and real image display according to the situation.

As described above, it is possible to prevent the two displays from being partially disabled while suppressing the deterioration of the appearance due to the slide movement, and to maintain good visibility by the change according to the situation.

Further, according to the first embodiment, the slide mechanism 40 slides and moves the light guide member 30 integrally provided with the first reflecting portion 31 and the second reflecting portion 33. That is, the overlapping position can be changed while the relative position between the first reflecting portion 31 and the second reflecting portion 33 is maintained. Therefore, since the magnification change of the virtual image display accompanying the change of the overlapping position is suppressed, the visibility can be kept good.

According to the first embodiment, the second reflecting portion 33 has the reflecting surface 33a that functions as a half mirror portion that transmits the background from the back side to the viewing side. Such a reflective surface 33a allows a virtual image to be superimposed and displayed while visually recognizing the background, so that visibility can be improved.

According to the first embodiment, the partition plate 50 has, and the facing end portion 52 facing the light emitting display portion 20 moves in conjunction with the sliding movement of the first reflecting portion 31. According to this, even if the overlapping position changes, the facing end 52 moves and the sections of both displays can be effectively used as needed, so that the appearance is good and the visibility can be improved.

(Second Embodiment)
As illustrated in FIG. 5, the second embodiment of the present disclosure is a modification of the first embodiment. The second embodiment will be described with a focus on differences from the first embodiment.

The vehicular display device 200 of the second embodiment includes a first reflecting portion 231 and a second reflecting portion 233 separately. Although the 1st reflection part 231 and the 2nd reflection part 233 are formed similarly to 1st Embodiment, the connection part which connects these is not provided.

The slide mechanism 240 of the second embodiment has a first slide part 242 and a second slide part 244. The first slide unit 242 is a mechanism that changes the overlapping position of the first reflection unit 231 with respect to the light emitting display unit 20 by sliding the first reflection unit 231. Specifically, the first slide part 242 is disposed on the right side of the light emitting display part 20 and includes a stepping motor 242a, a gear 242b, a screw shaft 242c, and a bearing part 242d. Is the same as the corresponding elements 40a to 40d of the first embodiment. However, the bearing portion 242d is fixed to the right side surface of the first reflecting portion 231. Thus, when the screw shaft 242c rotates along with the rotation of the gear 242b by the stepping motor 242a, the bearing portion 242d slides in the axial direction of the screw shaft 242c, so that the first reflecting portion 231 slides in the vehicle vertical direction. To do.

The second slide part 244 is a mechanism that slides the second reflection part 233. Specifically, the second slide part 244 is disposed on the left side of the light emitting display part 20, and includes a stepping motor 244a, a gear 244b, a screw shaft 244c, and a bearing part 244d. The elements 244a to 244d are the same as the corresponding elements 242a to 242d of the first slide portion 242. However, the bearing portion 244 d is fixed to the left side surface of the second reflecting portion 233. Thus, when the screw shaft 244c rotates with the rotation of the gear 244b by the stepping motor 244a, the bearing portion 244d slides in the axial direction of the screw shaft 244c, so that the second reflecting portion 233 slides in the vehicle vertical direction. To do.

Thus, the first reflecting portion 231 and the second reflecting portion 233 can slide independently of each other by the slide portions 242 and 244.

Also in the second embodiment described above, the slide mechanism 240 slides the first reflecting portion 231 to change the overlapping position of the first reflecting portion 231 with respect to the light emitting display portion 20. Therefore, it is possible to achieve the operational effects according to the first embodiment.

According to the second embodiment, the slide mechanism 240 slides the first slide part 242 that slides the first reflection part 231 and the second reflection part 233 independently of the first slide part 242. A second slide portion 244. That is, by changing the relative distance between the first reflecting unit 231 and the second reflecting unit 233, the imaging state in the virtual image display, such as magnification or imaging distance, can be changed so that it can be easily seen according to the situation. Since it can do, visibility can be improved.

(Third embodiment)
As shown in FIGS. 6 to 9, the third embodiment of the present disclosure is a modification of the first embodiment. The third embodiment will be described with a focus on differences from the first embodiment.

As shown in FIG. 6, the vehicular display device 300 of the third embodiment is not provided with the partition plate 50 as in the first embodiment. And the baseplate part 332 which the light guide member 30 has has divided the part which overlapped with the 1st reflection part 31 among the light emission display parts 20, and the part which shifted | deviated from the 1st reflection part 31. FIG. Specifically, the bottom plate portion 332 has a light shielding property, and has one end portion opposed to the display surface 22 of the light emitting display portion 20 with a small gap, and is formed in a flat plate shape extending substantially perpendicular to the display surface 22. Yes. Further, the bottom plate portion 332 connects the other end portion opposite to the one end portion to the reflecting surface 31a. Such a bottom plate portion 332 prevents display light from a portion overlapping the first reflecting portion 31 from leaking downward in the vehicle, and suppresses display light from a portion shifted from the first reflecting portion 31 from leaking upward from the vehicle. Is done.

The vehicle display device 300 includes an additional display unit 370 provided separately from the light emitting display unit 20. The additional display unit 370 is disposed at a position on the viewing side with respect to the movable region of the first reflecting unit 31 that is a region where the first reflecting unit 31 can exist. The additional display unit 370 includes a light source unit 371 and an optical unit 375.

The light source unit 371 is provided as a light source different from the backlight unit 24 of the light emitting display unit 20. The light source unit 371 is disposed on the viewing side with respect to the bottom plate unit 332 when the first reflecting unit 31 is located at the lowest position in the vehicle. As shown also in FIG. 7, the light source unit 371 is formed by arranging a plurality of light emitting elements 372 on the substrate 373 in the arrangement direction Dae. In the present embodiment, the arrangement direction Dae is along the left-right direction of the vehicle, and the arrangement intervals of the light emitting elements 372 are equal. In the present embodiment, for example, eight light emitting elements 372 are provided. Among the plurality of light emitting elements 372 arranged here, the light emitting elements 372 arranged at the left end and the right end are respectively arranged in alignment with the lateral edge of the display surface 22 in the vehicle left-right direction.

Each light emitting element 372 is a multi-chip LED element having chips of three colors (for example, red, green and blue), and emits light by control through an electronic circuit. More specifically, each light emitting element 372 can reproduce various colors by changing the luminance balance of the three color chips. Each light emitting element 372 can change the light emission amount itself by increasing or decreasing the luminance of each chip. Each light emitting element 372 of the light source unit 371 emits light toward the optical unit 375.

The optical unit 375 exerts an optical action on the light emitted from the light source unit 371 and directs the light toward the viewing side. Specifically, the optical unit 375 has an additional reflection surface 376 and a lenticular element 377. The additional reflecting surface 376 and the lenticular element 377 are opposed to each other with a space 370a therebetween, and a light source unit 371 is disposed at the lower end of the space 370a, and the light source unit 371 is directed upward of the space 370a. It emits light.

The additional reflecting surface 376 is formed by depositing a thin metal film such as aluminum on the viewing side surface of the base 376a disposed between the movable region of the first reflecting portion 31 and the lenticular element 377, or forming a reflecting film. It is configured by pasting. The base material 376 a is held by the light guide member 30, and slides together with the first reflecting portion 31.

Furthermore, since the base material 376a is disposed substantially parallel to the reflecting surface 31a of the first reflecting portion 31, the additional reflecting surface 376 is disposed back to back with the reflecting surface 31a. That is, the additional reflection surface 376 faces obliquely downward on the viewing side.

The lenticular element 377 has a sheet shape in which a plurality of lenticular lenses 378 are arranged with a small gap in accordance with the arrangement direction Dae of the light emitting elements 372, as partially enlarged in FIG. The lenticular element 377 is arranged so that the distance from the additional reflecting surface 376 increases toward the top of the vehicle.

Each lenticular lens 378 has a cylindrical surface 378a on the space side (back side). In each lenticular lens 378, the cylindrical surface 378a is disposed so as to be inclined along the direction in which the generatrix becomes higher on the vehicle side toward the viewing side. Therefore, the arrangement direction Dal of the lenticular lens 378 is along the vehicle left-right direction orthogonal to the bus line, and coincides with the arrangement direction Dae of the light emitting elements 372. Note that the arrangement interval of the lenticular lenses 378 is set to be sufficiently smaller than the arrangement interval of the light emitting elements 372.

Here, the light emitting element 372 and the lenticular element 377 of the light source unit 371 are held by a light transmitting plate 379. The translucent plate 379 covers the entire surface of the lenticular element 377 from the viewing side. Since the translucent plate 379 is fixed to the base material 376a, the entire additional display unit 370 slides together with the first reflecting unit 31.

In such an additional display unit 370, a part of the light emitted from each light emitting element 372 directly enters the lenticular element 377, and the other part enters the additional reflecting surface 376. When another part is incident on the additional reflecting surface 376, the additional reflecting surface 376 reflects light toward the viewing side lenticular element 377, so that the light subjected to the reflecting action as an optical action is directed to the lenticular element 377. Incident. Each lenticular lens 378 directs the light toward the viewer side by transmission while exerting a condensing action in the arrangement direction Dal as an optical action on the light from each light emitting element 372. The light transmitted through the lenticular element 377 is subsequently transmitted through the light transmitting plate 379, and as shown in FIG. 9, it is viewed by the viewer as an ambient display of a ripple-like pattern Pa with a three-dimensional effect. obtain.

The additional display unit 370 that performs such display can supplementarily display the state of the vehicle by setting the light emission color of the light source unit 371 and increasing or decreasing the light emission amount. For example, when the vehicle approaches an obstacle, the additional display unit 370 blinks in a red light emission color to display a warning. Further, for example, the additional display unit 370 changes the emission color according to the current fuel consumption of the vehicle. Specifically, when the fuel consumption is good, the emission color is green, and when the fuel consumption is deteriorated, the emission color is blue. For example, it is also possible to represent the state of the vehicle by lighting a part of each light emitting element 372.

Also in the third embodiment described above, the slide mechanism 40 changes the overlapping position of the first reflecting portion 31 with respect to the light emitting display portion 20 by sliding the first reflecting portion 31. Therefore, it is possible to achieve the operational effects according to the first embodiment.

In addition, according to the third embodiment, an additional display unit 370 is provided that is provided separately from the light emitting display unit 20 and is disposed at a position on the viewing side with respect to the movable region of the first reflection unit 31. When the additional display unit 370 performs display, the first reflecting unit 31 is disposed so as to overlap the light emitting display unit 20, and thus a dead time generated between the real image display position and the virtual image display position by the light emitting display unit 20. Space can be used effectively. Therefore, the appearance of the vehicle display device 300 is further enhanced.

Further, according to the third embodiment, the additional display unit 370 has a light source unit 371 provided separately from the light emitting display unit 20, and an optical effect on the light emitted from the light source unit 371 and directing the light toward the viewer side. Part 375. Since the light subjected to the optical action from the optical unit 375 is visually recognized, the display quality can be improved, and the appearance of the vehicular display device 300 is further enhanced.

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

Specifically, as a first modification, the first reflecting portion may be formed in a prismatic shape having translucency using synthetic resin such as acrylic resin or glass. The first reflecting portion 831 in FIG. 10 has an incident prism surface 831a, a reflecting prism surface 831b, and an exit prism surface 831c. The incident prism surface 831a is formed in a planar shape facing the display surface 22 of the light emitting display unit 20, and allows display light from the light emitting display unit 20 to enter the inside. The reflection prism surface 831b faces obliquely upward on the back side, similarly to the reflection surface 31a of the first embodiment, and reflects the display light incident inside in the direction of the second reflection unit 33. The reflecting prism surface 831b reflects display light using a difference in refractive index between the inside and the outside. The exit prism surface 831 c is formed in a planar shape facing the second reflecting portion 33, and the reflected display light is emitted toward the second reflecting portion 33. Thus, the first reflective portion 831 having a high reflectance can be easily realized without providing, for example, a metal film, so that the visibility of the vehicle display device can be easily increased.

As a second modification related to the first embodiment, the first reflecting portion and the second reflecting portion are integrally formed as a light guide member in a prismatic shape having translucency by using synthetic resin such as acrylic resin or glass. May be. 11 and 12, the light guide member 930 includes an incident prism surface 930a, a first reflecting prism surface 931 corresponding to the first reflecting portion, a second reflecting prism surface 933 corresponding to the second reflecting portion, and an exit prism surface 930b. Have. The incident prism surface 930a is formed in a planar shape facing the display surface 22 of the light emitting display unit 20, and allows display light from the light emitting display unit 20 to enter the inside. The first reflecting prism surface 931 faces obliquely upward on the back side, similar to the reflecting surface 31a of the first embodiment, and reflects the display light incident inside in the direction of the second reflecting prism surface 933. The second reflecting prism surface 933 faces obliquely downward on the viewing side, like the reflecting surface 33a of the first embodiment, and reflects the display light reflected by the first reflecting prism surface 931 to the viewing side. Here, each of the reflecting prism surfaces 931 and 933 reflects display light by utilizing a difference in refractive index between the inside and the outside. The exit prism surface 930b is formed in a planar shape, and emits the display light reflected by the second reflecting prism surface 933 toward the viewing side. Thus, the first reflective part and the second reflective part having a high reflectance can be easily manufactured as one component, and thus the visibility of the vehicle display device can be easily increased.

As a third modification, the second reflecting portion 33 may not function as a half mirror portion.

As a fourth modification, other surface shapes such as a planar shape may be adopted for the reflecting

surfaces

31a and 33a of the reflecting

portions

31 and 33, respectively.

As a fifth modification, the slide mechanism 40 may employ another mechanism such as a mechanism using hydraulic pressure.

As a sixth modification, the vehicle display device 100 may not include the partition plate 50.

As a seventh modified example, the light emitting display unit 20 may be at least partly replaced with an element other than the image display panel. For example, an indicator lamp and a warning lamp that illuminate and display a display plate on which an indicator indicating the state of the vehicle is formed with a light source from the back side are provided on a part of the upper side of the light emitting display unit 20. Also good. And if the location where the display board is arranged corresponds to the location where it overlaps with the first reflective portion, the indicator that is lit and displayed can be displayed as a virtual image via the first reflective portion 31 and the second reflective portion 33.

As an eighth modified example related to the third embodiment, an optical element other than the lenticular element 377 may be employed in the optical unit 375. For example, a three-dimensional pattern may be displayed by a refracting element that exerts a refractive action as an optical action or a diffractive element that exerts a diffractive action. Further, for example, a diffusing element that exerts a diffusing action can be employed.

As a ninth modification regarding the third embodiment, a single-chip LED element may be employed as the light-emitting element 372 of the light source unit 371, or an element other than the LED may be employed.

As a tenth modification related to the third embodiment, as shown in FIG. 13, the additional display unit 370 is fixed to the light emitting display unit 20 without sliding along with the first reflecting unit 31 of the light guide member 30. It may be.

The above-described display device for a vehicle includes the light emitting display unit 20, the first reflecting

units

31, 231, the second reflecting

units

33, 233, and the

slide mechanisms

40, 240. The light emitting display unit 20 emits display light to the viewing side. The first reflecting

portions

31 and 231 are arranged so as to overlap at least partly with the light emitting display portion on the viewing side with respect to the light emitting display portion, and reflect the display light from the overlapped portion of the light emitting display portion. The second reflecting

portions

33 and 233 are arranged at positions avoiding overlapping with respect to the light emitting display portion, and reflect the display light reflected by the first reflecting portion to the viewer side. The

slide mechanisms

40 and 240 change the overlapping position of the first reflection unit with respect to the light emitting display unit by sliding the first reflection unit.

According to such a configuration, the first reflecting portion is arranged at least partially overlapping the light emitting display portion on the viewing side with respect to the light emitting display portion, and the second reflecting portion avoids overlapping with the light emitting display portion. It is arranged at the position. Here, when the light emitting display unit emits display light to the viewing side, the display light from the portion overlapping with the first reflecting unit is reflected by the first reflecting unit and the second reflecting unit, so that the outside of the light emitting display unit. It is possible to display a virtual image at a certain position. On the other hand, display light from a portion of the light emitting display portion that does not overlap with the first reflecting portion is emitted to the viewer side, and real image display is possible.

Further, the first reflecting portion is slid by the slide mechanism, and the overlapping position of the first reflecting portion with respect to the light emitting display portion can be changed. Therefore, it is possible to change the distribution of the area used for virtual image display and real image display according to the situation.

Although the present disclosure has been described based on the embodiments, it is understood that the present disclosure is not limited to the embodiments and structures. The present disclosure includes various modifications and modifications within the equivalent range. In addition, various combinations and forms, as well as other combinations and forms including only one element, more or less, are within the scope and spirit of the present disclosure.

Claims

A light emitting display (20) for emitting display light to the viewer side;
A first reflecting portion (31, 231) that is disposed at least partially overlapping the light emitting display portion on the viewing side of the light emitting display portion, and reflects display light from the overlapped portion of the light emitting display portion;
A second reflecting portion (33, 233) that is disposed at a position avoiding overlap with the light emitting display portion and reflects the display light reflected by the first reflecting portion to the viewer side;
A vehicular display device comprising: a slide mechanism (40, 240) that changes an overlapping position of the first reflective portion with respect to the light emitting display portion by sliding the first reflective portion.
The first reflecting portion (31) and the second reflecting portion (33) are integrally provided as a light guide member (30) for guiding display light from the overlapped portion,
The vehicle display device according to claim 1, wherein the slide mechanism (40) slides the light guide member.
The slide mechanism (240)
A first slide part (242) for slidingly moving the first reflection part (231);
2. The vehicle display device according to claim 1, further comprising: a second slide portion (244) that slides the second reflection portion (233) independently of the first slide portion. 3.
The vehicle display device according to any one of claims 1 to 3, wherein the second reflecting portion includes a half mirror portion (33a) that transmits the background from the back side to the viewing side.
A partition plate (50) for partitioning the overlapped portion of the light emitting display portion and the portion shifted from the first reflecting portion;
The said partition plate has the opposing edge part (52) which opposes the said light emission display part, and moves in conjunction with the sliding movement of a said 1st reflection part, The any one of Claim 1 to 4 characterized by the above-mentioned. The vehicle display device described in 1.
An additional display unit (370) provided separately from the light emitting display unit, disposed at a position on the viewing side with respect to the movable region of the first reflecting unit, and further displaying on the viewing side. The vehicle display device according to any one of claims 1 to 5.
The additional display section
A light source unit (371) provided separately from the light emitting display unit;
The vehicle display device according to claim 6, further comprising: an optical unit (375) that exerts an optical action on light emitted from the light source unit and directs the light toward a viewing side.