WO2018037605A1

WO2018037605A1 - Display device

Info

Publication number: WO2018037605A1
Application number: PCT/JP2017/011395
Authority: WO
Inventors: 猛三木; 高橋　正和; 真阿部; 淳史工藤; 浩平豊田; 正人齋藤
Original assignee: パイオニア株式会社; 東北パイオニア株式会社
Priority date: 2016-08-24
Filing date: 2017-03-22
Publication date: 2018-03-01

Abstract

This display device is characterized by comprising: a light source which emits light beams that can form an image including a display image and that reach a prescribed region; a display member which reflects the aforementioned light beams to form a virtual image; a displacement mechanism which displaces the aforementioned display member; and a control unit which controls operation of the displacement mechanism so as to change the amount that the display member protrudes into the aforementioned prescribed region and controls the light source such that the mode of the display image changes depending on the aforementioned amount of protrusion.

Description

Display device

The present invention relates to a display device.

In recent years, for example, a so-called head-up display has begun to be installed near the driver's seat of a vehicle. The head-up display is a display device that displays driving support information such as vehicle information, road information, navigation information, and the like on a translucent display member called an image combiner (hereinafter also simply referred to as a combiner).

The head-up display displays, for example, driving support information as described above as a virtual image in front of the windshield. The driving support information is visually recognized by the driver over the scenery in front of the vehicle. Therefore, the head-up display can provide the driving support information to the driver with little movement of the driver's line of sight.

As one of head-up displays, Patent Document 1 discloses that in a head-up display mechanism having a reflector hood capable of displaying information and the like, the reflector hood can be moved up and down with respect to the instrument panel together with the head-up display device. There is disclosed a head-up display device provided with a head-up display lifting device that can be installed and configured to drive the head-up display device up and down.

JP 2010-143343 A

A head-up display device as disclosed in Patent Document 1 is configured to move up and down the entire head-up display mechanism. Therefore, the apparatus used for the said raising / lowering will become a big thing, and the area | region required in order to install an apparatus will increase.

In addition, since the amount of protrusion of the combiner itself from the head-up display device cannot be adjusted, it is difficult to remove the foreign object feeling by adjusting the head-up display device when the user feels a foreign object feeling to the combiner. is there.

The present invention has been made in view of the above-described points. For example, it is an object of the present invention to provide a display device that can remove or reduce a foreign object feeling felt by a user with respect to a combiner while displaying appropriate information. I will.

The invention according to claim 1 is capable of forming an image including a display image and emitting a light beam to a predetermined region, a display member reflecting the light beam to form a virtual image, and moving the display member The movement mechanism and the operation of the movement mechanism are controlled so as to change the amount of protrusion of the display member into the predetermined region, and the light source is controlled so that the display image changes in accordance with the amount of protrusion. And a control unit.

FIG. 6 is a perspective view of the display device according to the first embodiment during a display operation. FIG. 6 is a perspective view of the display device according to the first embodiment when the area-saving display operation is performed. FIG. 3 is a perspective view of the display device according to Example 1 during a non-display operation. 3 is a perspective view of a combiner unit of the display device according to Embodiment 1. FIG. FIG. 6 is a side view of the display device according to the first embodiment in all display modes. 6 is a side view of the display device according to the first embodiment in an area saving display mode. FIG. It is a rear view at the time of displaying the example of a display image in all the display modes of the display apparatus concerning Example 1. FIG. 6 is a rear view when a display image example in the area saving display mode of the display device according to the first embodiment is displayed.

Hereinafter, embodiments of the present invention will be described in detail. In the following description, a head-up display (HUD) having a combiner as a display unit will be described as an example of the display device.

FIG. 1A is a perspective view when the display device 10 according to the first embodiment is in a display operation (when the combiner is deployed) and is in a full display mode. FIG. 1B is a perspective view during display operation of the display device 10 and during area-saving display. FIG. 1C is a perspective view of the display device 10 during a non-display operation (when the combiner is stored). The display device 10 is mounted on a moving body such as an automobile. For example, when mounted on an automobile, the display device 10 is mounted in a dashboard, for example.

The housing 11 extends substantially perpendicularly to the top plate portion TP from the plate-shaped top plate portion TP and the side end portions of the top plate portion TP facing each other, and a pair of plate-like side plate portions SP facing each other. have.

In the following description, the direction substantially along the line of intersection of the plate surface TPS of the top plate portion TP and the plate surface SPS of the side plate portion SP will be described as the depth (front-rear) direction (X-axis direction). The direction perpendicular to the plate surface SPS of the side plate portion SP will be described as the width direction (Y-axis direction). In addition, a direction substantially perpendicular to the plate surface TPS of the top plate portion TP will be described as a height (vertical) direction (Z-axis direction).

The top plate TP is provided with an opening OP1 which is a longitudinal opening extending in the width direction (Y direction) of the display device 10. The top plate TP is provided with an opening OP2 which is an opening arranged side by side with the opening OP1 in the depth direction (X direction). Note that the opening OP1 and the opening OP2 may be integrated to form one opening.

An image combiner unit (hereinafter referred to as a combiner unit) 13 as a display member is a member having a plate-like combiner portion 13A having translucency. The plate surface of the combiner portion 13A is convexly curved in one direction (the arrow PD direction in the figure). For example, the combiner portion 13A is configured to form a virtual image in the convex-side space region when irradiation light enters from the concave-surface side.

In the following description, the direction toward the convex of the combiner portion 13A (in the direction of arrow PD in the figure) during the display operation (when the combiner is expanded) shown in FIG. 1A will be described as the front of the display device 10 and vice versa. .

As shown in FIGS. 1A and 1B, during the display operation (when the combiner is unfolded), the combiner unit 13 protrudes from the space inside the casing 11, that is, between the side plate portions SP, through the opening OP1 and rises up. It becomes a state. That is, the combiner unit 13 is in the deployed position. Further, during the display operation, irradiation light (light beam) emitted from a light source (not shown) provided in the housing 11 passes through the opening OP2 and is irradiated to the combiner unit 13A.

As shown in FIG. 1A, in the entire display mode in which display can be performed using the entire combiner portion 13A, the combiner portion 13A substantially protrudes from the housing through the opening OP1. Further, as shown in FIG. 1B, in the area saving display mode in which the display can be performed using a part of the combiner portion 13A, the combiner 13A protrudes from the housing by about half through the opening OP1. .

Further, as shown in FIG. 1C, the combiner unit 13 is slid and accommodated in the combiner casing 11, that is, in the space between the side plate portions SP during the non-display operation. That is, during the non-display operation, the combiner unit 13 is in the storage position in the storage space in the housing 11 formed between the two side plate portions SP.

Further, the opening OP1 is shielded by the shutter 14 during the non-display operation (when the combiner is stored). The shutter 14 is provided so as to be movable between a shielding position where the opening OP1 can be shielded and a storage position in the housing. That is, the shutter 14 is brought to the storage position during the display operation and to the shielding position during the non-display operation.

More specifically, for example, the combiner unit 13 is stored in the storage position in the housing 11 before the display device 10 is turned on (before the automobile engine is started or before the ignition is turned on). Thereafter, when the power of the display device 10 is turned on, the combiner unit 13 slides from the storage position and is arranged at the unfolded position. The combiner unit 13 is slidably supported with respect to the side plate portion SP, and moves between the storage position and the deployed position.

Fig. 2 shows an enlarged view of the combiner unit 13. As shown in FIG. 2, the combiner portion 13A is fixed and held by a holding portion 13B. The holding unit 13B is connected to a moving mechanism (not shown) and is movable by driving the moving mechanism. In the following description, the direction of the tip of the combiner unit 13A viewed from the holding unit 13B during the display operation is described as being above the display device 10 and vice versa.

A portion of the holding portion 13B opposite to the portion where the combiner portion 13A is held, that is, a lower portion of the holding portion 13B, is provided with a light shielding protrusion 13C made of a material having a light shielding property against visible light. . The light shielding protrusion 13 C as the light shielding part protrudes downward from the display device 10 and extends along the width direction of the display device 10. The light shielding protruding portion 13C may be formed integrally with the holding portion 13B, or may be formed separately from the holding portion 13B and attached later.

In other words, the light shielding protrusion 13C is provided at the end of the combiner unit 13 opposite to the protrusion from the opening OP1. Further, it is preferable that the light shielding protrusion 13C has a width, that is, a length along the Y direction larger than the width of the light beam L in order to prevent the light beam L from leaking from the side portion in the width direction.

Hereinafter, for example, when the display device 10 is mounted in the dashboard of the moving body, the windshield of the moving body (for example, an automobile) is present in front of the display device 10, that is, in the direction of the arrow PD in the drawing. In addition, it is assumed that the passenger of the moving body looks at the combiner unit 13 from the rear side of the display device 10.

FIG. 3A is a side view showing the display device 10 in the full display mode. FIG. 3B is a side view showing the display device 10 in the area-saving display mode. 3A and 3B, the outer shape of the housing 11 is indicated by a one-dot chain line, and the state inside the housing 11 is illustrated.

The light source 15 is attached to the front area of the housing 11. The light source 15 can emit a light beam L capable of forming an image including a display image displayed by the combiner unit 13 A from the light emitting surface 15 S toward the rear of the housing 11.

The mirror 17 is a reflecting mirror having a surface 17S that can reflect the light beam L. The light beam L is reflected by the surface 17S of the mirror 17, passes through the opening OP1, and is applied to the combiner unit 13A of the combiner unit 13. In other words, the light beam L emitted from the light source 15 and reflected by the mirror 17 is irradiated so as to reach a light beam arrival region LR as a predetermined region from which the combiner unit 13A of the combiner unit 13 protrudes during display operation.

That is, an optical system in which the light beam L emitted from the light source 15 reaches the light beam arrival region LR is formed by the light source 15 and the mirror 17.

The control unit 19 is connected to a motor M and a light source 15 as a moving mechanism that is driven to move the combiner 13, and controls these operations. The motor M is connected to the combiner unit 13 by a transmission mechanism (not shown) such as a gear. When the motor M is driven, the combiner unit 13 slides up and down between the storage position and the deployed position, for example, in a direction along the surface of the combiner portion 13A.

The control unit 19 can control the motor M so as to change the amount of protrusion from the housing 11 through the opening OP1 of the combiner unit 13. That is, the control unit 19 can control the motor M so as to change the amount of protrusion of the combiner unit 13 into the light ray arrival region LR during the display operation. This protrusion amount can be changed between a plurality of fixed values or steplessly.

For example, as shown in FIG. 3A, the control unit 19 controls the motor M so that the combiner unit 13 is brought to a fully projecting position where almost all of the combiner unit 13 A projects from the housing 11 in the all display mode. Is possible. That is, almost all of the combiner portion 13A can be controlled so as to protrude into the light ray arrival region LR.

Further, for example, as shown in FIG. 3B, the control unit 19 brings the combiner unit 13 to the half-projected position or the half-deployed position where almost half of the combiner unit 13A projects from the housing 11 in the area saving display mode. Thus, the motor M can be controlled. That is, almost half of the combiner portion 13A can be controlled so as to protrude into the light ray arrival region LR.

Further, the moving mechanism may be capable of fixing and supporting the combiner unit 13 at a plurality of two or more positions where the amount of protrusion of the combiner portion 13A into the light ray arrival region LR becomes a predetermined amount.

Further, the control unit 19 can drive the motor M to change the tilt of the combiner unit 13 so as to change the tilt of the combiner unit 13A with respect to the optical axis of the light beam L in the light beam arrival region LR. Note that the change in the inclination of the combiner unit 13 may be realized by a mechanism other than the motor M.

Thus, in the display device 10, the amount of protrusion of the combiner unit 13A from the housing 11 during the display operation can be reduced, and the area occupied by the combiner unit 13A in the user's field of view can be reduced. Thereby, it is possible to reduce the foreign object feeling which a user feels with respect to the combiner unit 13 at the time of the display operation of the display device 10.

Further, the control unit 19 generates a display image formed by the light beam L emitted from the light source 15. The control unit 19 controls the light source 15 to emit the light beam L including the generated display image from the light source 15.

The control unit 19 is connected to, for example, a detection device (not shown) that detects the position, speed, moving direction, surrounding situation, and the like of the vehicle on which the display device is mounted. Moreover, the control part 19 is connected to the apparatus (not shown) which produces | generates the information displayed on the instrument panel of the vehicle mounted, for example. That is, the control unit 19 generates a display image based on information from these devices, for example.

This display image may include, for example, information on the state of the vehicle such as the speed of the vehicle and the setting state of the air conditioner, information on the surrounding environment of the vehicle such as the speed limit of the road on which the vehicle is currently traveling, or navigation information. Good.

The change of the protrusion amount of the combiner unit 13A described above may be made by a command to the control unit 19 by a user operation. Moreover, the change of the protrusion amount of the combiner portion 13A may be automatically changed according to the amount of information to be displayed.

For example, in a moving body such as an automobile, it is usually necessary to display only basic state information of the moving body such as the speed of the moving body, so that the amount of protrusion of the combiner portion 13A is automatically reduced and displayed. The possible area may be reduced. Further, when the navigation system is performing route guidance or the like, route guidance display is required in addition to the above basic state information, so the amount of protrusion of the combiner unit 13A is automatically increased, and the displayable area May be increased.

As shown in FIG. 3A, in the all display mode, the holding portion 13B is moved up to the vicinity of the opening OP1 so that almost all of the combiner portion 13A protrudes from the housing 11. At this time, the combiner unit 13 is located outside the region through which the light beam L from the light source 15 to the mirror 17 passes. That is, the light beam L emitted from the light source 15 is reflected by the mirror 17 and all reaches the combiner unit 13A.

On the other hand, as shown in FIG. 3B, in the area saving display mode, the combiner unit 13 is positioned lower than in the full display mode. At this time, a part of the combiner unit 13 is located in a region through which the light beam L from the light source 15 to the mirror 17 passes. Specifically, for example, the light shielding protrusion 13C protrudes into the region through which the light beam L passes.

In the case of the example shown in FIG. 3B, the combiner unit 13 is positioned so that the light shielding protrusion 13C is in a position to shield the upper half of the light beam L emitted from the light source 15 in the area saving display mode. For this reason, only the lower half of the light beam L emitted from the light source L is reflected by the mirror 17 and reaches the combiner portion 13A. Therefore, in the area saving display mode, only the lower half of the display image generated by the control unit 19 is displayed by the combiner unit 13A.

As in the example shown in FIG. 3B, it is preferable that the light from the light source 15 is blocked by the light blocking protrusion 13C so that the light beam does not reach a region where the combiner portion 13A does not protrude in the light beam arrival region LR. That is, it is preferable to block the light beam L that can pass above the combiner portion 13A.

By doing in this way, it is possible to reduce the possibility that light other than the light used for display by the combiner 13A reaches, for example, the windshield of an automobile and disturbs the user's view. That is, it is possible to prevent the visual field from being disturbed by the reflection or scattering of the light beam L reaching the windshield or the like.

In addition, the light shielding protrusion 13C moves up and down with the movement of the combiner unit 13. Therefore, the amount of protrusion of the light shielding protrusion 13C in the path of the light L, that is, the area through which the light L passes, changes according to the amount of protrusion of the combiner 13A to the light ray arrival region LR. In other words, the amount of the light beam L shielded by the light shielding projecting portion 13C changes according to the projecting amount of the combiner portion 13A to the light ray arrival region LR.

FIG. 4A is a rear view of the display device 10 showing an example of a display image by a virtual image formed by the combiner unit 13A in the full display mode. As described above, the display image based on the virtual image formed by the combiner unit 13 A is generated by the control unit 19. That is, the image displayed as a virtual image in the area and the image formed by the control unit 19 are the same. Hereinafter, for convenience of explanation, a portion surrounded by a broken line in FIG. 4A will be described as a display image R displayed as a virtual image by the combiner unit 13A and generated by the control unit 19.

As shown in FIG. 4A, in the all display mode, navigation information display is included in the upper area RA of the display image R displayed by the upper half area of the combiner portion 13A. This navigation information display may include display of the distance to the next turn, the direction to turn, the distance to the destination, the arrival time to the destination, and the like.

Further, in the lower area RB displayed by the lower half area of the combiner unit 13A, information on the state of the vehicle such as the air conditioner temperature and the setting state of the air outlet and the current speed of the vehicle, and the road that is currently running Display of information about the surrounding environment of the vehicle, such as a speed limit, may be included.

FIG. 4B is a rear view of the display device 10 showing an example of a display image by a virtual image formed by the combiner unit 13A in the area saving display mode. As shown in FIGS. 3B and 4B and as described above, in the area-saving display mode, only the upper half of the combiner portion 13A protrudes from the opening OP1.

In the area saving display mode, as described above, only the lower half of the display image R generated by the control unit 19 is displayed by the combiner unit 13A. That is, as shown in FIG. 4B, only the lower region RB of the display image R is displayed as a virtual image.

In the area-saving display mode shown in FIG. 4B, the upper half of the light beam L is blocked by the light shielding protrusion 13C. Therefore, even if a display is included in the upper area RA of the display image R, it is not displayed by the combiner unit 13A. Therefore, the display may not be included in the upper area RA of the display image R generated by the control unit 19.

In the area saving display mode, information can be displayed only in the half area of the full screen display mode, that is, the lower area RB. Therefore, a display image that displays only a part of the information included in the display image R in the full screen display mode may be generated.

In the lower area RB of the display image R, only important information among the information included in the display image R in the full screen display mode may be displayed. For example, as shown in FIG. 4B, the lower region RB of the display image R in the area saving display mode includes a part of the information included in the display image R in the full screen display mode, specifically, the upper region RA. The navigation information included in the vehicle information and the vehicle speed information included in the lower region RB may be included.

That is, the control unit 19 changes the display image R generated in the full screen display mode and the area saving display mode. In other words, the control part 19 changes the aspect of the display image R according to the protrusion amount of the combiner part 13A to the light ray arrival region LR where the light ray L reaches.

As described above, the mode of the display image R can be determined based on which of the plurality of positions the combiner unit 13 is fixedly supported.

As described above, according to the display device 10, it is possible to appropriately change the display image to be displayed using the combiner unit 13A according to the amount of protrusion of the combiner unit 13A from the housing. Thereby, it is possible to present appropriate information to the user while reducing the amount of protrusion of the combiner portion 13A from the housing 11 and reducing the feeling of foreign objects felt by the user.

Note that the display image R in the area saving display mode may include information display that was not included in the display image R in the full screen display mode.

As described above, according to the display device 10 of the present embodiment, the amount of protrusion of the combiner portion 13A from the housing 11 can be changed, so that the foreign object feeling felt by the user for the combiner portion 13A can be reduced. Is possible.

Also, the display content or display mode of the display image can be changed according to the amount of protrusion of the combiner portion 13A from the housing 11, that is, according to the increase or decrease of the displayable area. Therefore, it is possible to present appropriate information to the user while reducing the foreign object feeling that the user feels to the combiner unit 13A.

Further, as described above, according to the display device 10 of the present embodiment, when the amount of protrusion of the combiner portion 13A from the housing 11 is reduced, one of the light beams 15 emitted from the light source 15 by the light shielding protrusion portion 13C. It is possible to block the part (for example, the upper part).

That is, the light L is prevented from escaping from the combiner portion 13A and being scattered in other directions without changing the optical path of the light L emitted from the light source by changing the orientation of the light source 15 itself. It is possible.

As a result, it is possible to prevent the light L from passing through the combiner portion 13A and reaching, for example, the windshield of an automobile, and to prevent the user's field of view from being deteriorated. It is.

In the embodiment described above, the combiner unit 13 is provided with the light shielding protrusion 13C, but the light shielding protrusion 13C may not be provided. For example, if there is no problem that the light beam L deviates from the combiner portion 13A and is scattered in the other direction, the light shielding protrusion portion 13C may not be provided.

Further, for example, the optical path of the light beam L may be changed by changing the orientation of the light source 15 itself. Moreover, you may provide the other light-shielding body which can interrupt | block partially the light ray L on the optical path of the light ray L so that operation | movement is possible. The light shield may be a movable structure or a liquid crystal shutter, for example.

In the above embodiment, the information content included in the display image is changed according to the amount of protrusion of the combiner portion 13A from the housing. However, the information display included in the display image R may be reduced or enlarged according to the protrusion amount of the combiner unit 13A, that is, the increase or decrease of the displayable area.

Further, in the above embodiment, the case where the combiner unit 13 is fixed at the two positions of the unfolded position and the semi-deployed position is taken as an example. However, in the state where the combiner portion 13A protrudes into the light ray arrival region LR, the combiner unit 13 can be fixedly supported at a plurality of three or more positions by the motor M as a moving mechanism as described above. In that case, the control part 19 can change the aspect of the display image to produce | generate according to the protrusion amount into the light ray arrival area | region LR of the combiner part 13A.

The various configurations and the like in the above-described embodiments are merely examples, and can be selected as appropriate according to the usage and the like.

DESCRIPTION OF SYMBOLS 10 Display apparatus 11 Housing | casing 13 Combiner unit 13A Combiner part 14 Shutter 15 Light source 15S Light emission surface 17 Mirror part 19 Control part OP1 Opening part OP2 Opening part L Light beam LR Light beam arrival area M Motor

Claims

A light source capable of forming an image including a display image and emitting a light beam reaching a predetermined area;
A display member that reflects the light to form a virtual image;
A moving mechanism for moving the display member;
A control unit that controls an operation of the moving mechanism so as to change a protruding amount of the display member into the predetermined region and controls the light source so that a form of the display image changes according to the protruding amount; ,
A display device comprising:
A housing for holding the light source, the display member, and the moving mechanism and having an opening;
The display device according to claim 1, wherein the moving mechanism moves the display member so as to change a protruding amount of the display member from the housing through the opening.
The said moving mechanism can fix-support the said display member in the several position where the protrusion amount to the said predetermined area | region of the said display member becomes predetermined amount, The Claim 1 or 2 characterized by the above-mentioned. Display device.
The display device according to claim 3, wherein the display image is determined based on which of the plurality of positions the display member is fixedly supported.
The display device according to any one of claims 1 to 4, wherein the moving mechanism is capable of adjusting an angle of the display member with respect to an optical axis in the predetermined region of the light beam.
The display device according to any one of claims 1 to 5, wherein a mode of the display image is changed by changing a content of information included in the display image.