WO2021020196A1

WO2021020196A1 - Digital mirror device

Info

Publication number: WO2021020196A1
Application number: PCT/JP2020/028071
Authority: WO
Inventors: 安田　一也; 貴裕大西
Original assignee: 株式会社デンソー
Priority date: 2019-07-26
Filing date: 2020-07-20
Publication date: 2021-02-04
Also published as: JP7107287B2; JP2021020557A; CN114007904A

Abstract

This digital mirror device (20) comprises a display (21), a storage part (23), and a sliding device (24). The sliding device slides the display in a sliding direction that follows the inner surface of the windshield of the vehicle in the longitudinal direction of the vehicle. Further, the sliding device comprises an actuator (30) and a connecting mechanism (31). The actuator is a linear actuator that expands and contracts along the roof of the vehicle in the longitudinal direction of the vehicle. The connecting mechanism couples the actuator and the display. The connecting mechanism is configured so as to change the longitudinal motion of the actuator into motion in the sliding direction via the rolling of a plurality of connected rotary bodies inside the storage part.

Description

Electronic mirror device

Cross-reference of related applications

This international application claims priority based on Japanese Patent Application No. 2019-137999 filed with the Japan Patent Office on July 26, 2019, and is based on Japanese Patent Application No. 2019-137999. The entire contents are incorporated in this international application by reference.

This disclosure relates to an electronic mirror device.

Instead of the conventional optical mirror, an electronic mirror that displays the image of the rear of the vehicle taken by the camera on the display inside the vehicle has been proposed (see, for example, Patent Document 1). The electronic mirror can display various information such as drawing a warning mark according to the driving situation and the surrounding situation of the vehicle from various information obtained from the vehicle. Therefore, the electronic mirror is expected as a technology that can contribute to the improvement of vehicle safety as compared with the conventional optical mirror.

JP-A-2019-001226

When the rear-view mirror normally installed in the front center of the vehicle interior is an electronic mirror, in situations where the driver himself is not driving, such as when driving automatically, a video is displayed on the display that functions as an electronic mirror. It is conceivable to display various contents such as. Here, since the rearview mirror is usually arranged above the vehicle interior so as not to obstruct the driver's field of view, the display constituting the rearview mirror is also composed of a small screen. However, when the driver is not driving the vehicle, there is no problem even if the view in front of the vehicle is obstructed, so the small screen as a rearview mirror can be switched to a large screen for displaying contents. Is preferable.

As a method of realizing such switching, a large display is housed in the roof of the vehicle, and when the driver is driving, a part of the display protrudes above the windshield, and the driver drives. In situations where this is not the case, a configuration is conceivable in which the display is further projected.

However, as a result of detailed examination by the present inventor, it has been found that the device may become large in size when trying to realize such switching.

One aspect of the present disclosure is to provide a small electronic mirror device capable of projecting a display as an electronic mirror housed in a vehicle roof.

One aspect of the present disclosure is an electronic mirror device, which includes a display body, a storage unit, and a slide device. The display body constitutes an electronic mirror mounted on the upper front part of the vehicle interior so that the driver can confirm the rear part. The storage portion is provided on the roof portion of the vehicle and is configured to store the display body. The sliding device slides the display body in the sliding direction, which is the direction along the inner surface of the windshield of the vehicle and is the front-rear direction in the vehicle. Further, the slide device includes an actuator and a connecting mechanism. The actuator is a linear actuator that expands and contracts in the front-rear direction of the vehicle along the roof of the vehicle. The connecting mechanism connects the actuator and the display body. Further, the connecting mechanism is configured so that a plurality of connected rotating bodies roll in the accommodating portion to change the motion in the front-rear direction by the actuator into the motion in the sliding direction.

According to such a configuration, a small electronic mirror device is provided.

It is a figure which shows the state that the display body protrudes. It is a figure which shows the cross section of an electronic mirror device. It is a figure which shows the cross section of the electronic mirror device when the screen is enlarged.

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

[1. overall structure]
As shown in FIG. 1, the electronic mirror 11 is a mirror mounted on the front upper part of the vehicle interior of the vehicle 10 so that the driver can check the rear. Specifically, the electronic mirror 11 is arranged in the central region above the windshield 12 when viewed from the driver. That is, the electronic mirror 11 is arranged at the position of the so-called rearview mirror. The electronic mirror 11 functions as, for example, a rearview mirror, and is configured to display an image of the rear of the vehicle 10 and an image of the rear of the driver (for example, the rear seat) in the vehicle 10. Has been done. Further, the electronic mirror 11 also functions as a side mirror, and is configured to display an image of the rear side of the vehicle 10. Further, in addition to these images, the electronic mirror 11 displays various traveling information of the vehicle 10 (for example, traveling speed, traveling mode, traveling distance, cruising distance, remaining battery level, etc.), and a destination by the car navigation system. It is configured to display guidance information and the like.

As shown in FIG. 1, the display body 21 including the display that functions as the electronic mirror 11 can be stored in the roof portion 13 of the vehicle 10. The display body 21 exists at a position that does not obstruct the driver's field of view, that is, a position as the rearview mirror when the driver is driving. Specifically, a part of the lower side of the display body 21 is formed into a horizontally long strip shape and protrudes from the roof portion 13 to the upper side of the windshield 12. At this time, most of the display body 21 is housed in the roof portion 13. On the other hand, when the driver switches from driving to automatic driving and a request is made from the driver, the display body 21 as a whole further protrudes from the roof portion 13 to form a large screen, as shown by the broken line in FIG. It is configured to do. Specifically, the display body 21 is configured to be projected so as to reach an area that obstructs the driver's field of vision during driving.

The display body 21 is configured to be capable of displaying a TV screen, a DVD playback screen, a game screen, a chat screen, a personal computer software execution screen, and the like, in addition to the above-mentioned various traveling information and destination guidance information. .. Then, when the screen is enlarged as described above, for example, the user can perform operations such as playing the above TV and DVD, playing a game, chatting, and executing personal computer software by using an externally connected controller, keyboard, and the like. It is configured in.

[2. Electronic mirror device]
Next, the electronic mirror device 20 which is one aspect of the present disclosure will be described with reference to FIG. The electronic mirror device 20 includes the display body 21, a storage unit 23 for storing the display body 21, and a slide device 24 for sliding the display body 21.

The display body 21 is a thin OLED (Organic Light-Emitting Diode) display. Specifically, the OLED elements 211 are arranged in the two-dimensional direction on the metal sheet 213 to form a display screen. A protective layer 212 made of resin is formed on the surface of the OLED element 211 so that it is not easily scratched when it is slid by the slide device 24. The surface of the display body 21 opposite to the display screen is made of metal in order to electrically shield the display body 21 from the outside. This makes it possible to suppress, for example, electrical noise on the displayed image. As the metal, aluminum is preferably used for weight reduction.

Further, the display body 21 is formed in a curved surface shape such that the surface thereof is arcuate in a vertical cross section orthogonal to the width direction of the vehicle 10.

The storage unit 23 is mounted on the roof unit 13 of the vehicle 10 and stores the display body 21. In this embodiment, a plurality of rotating bodies 311 of the slide device 24, which will be described later, are also housed.

The slide device 24 is connected to the display body 21 and is configured to slide the display body 21. Specifically, the slide device 24 is configured to slide the display body 21 in the slide direction B, which is the direction along the inner surface of the windshield 12 of the vehicle 10 and is the front-rear direction in the vehicle 10. There is. In the present embodiment, the slide direction B is a direction substantially parallel to the windshield 12. Further, the slide device 24 is configured such that the display body 21 is projected from at least the position as a rearview mirror to an area that obstructs the driver's field of vision during driving.

The slide device 24 includes an actuator 30 and a connecting mechanism 31.

The actuator 30 is a linear actuator that is arranged behind the vehicle 10 and expands and contracts in the front-rear direction A of the vehicle 10 along the roof portion 13 of the vehicle 10. The linear actuator is an actuator that converts a rotary motion generated by driving a motor into a linear motion.

The connecting mechanism 31 includes a plurality of rotating bodies 311 and a plurality of connecting plates 313 that connect the rotating shafts 312 of the adjacent rotating bodies 311 among the plurality of rotating bodies 311.

The plurality of rotating bodies 311 are configured to be rotatable in the storage unit 23. Specifically, the storage unit 23 is provided with, for example, a guide rail (not shown), and the plurality of rotating bodies 311 roll in the storage unit 23 along the guide rail.

Further, the rotating shafts 312 of two adjacent rotating bodies 311 among the plurality of rotating bodies 311 are connected by a flat plate-shaped connecting plate 313. More specifically, as shown in FIG. 2, for one rotating body 311a, an inner connecting plate 313a that connects to the rotating shaft 312b of the front or rear rotating body 311b and a rotating shaft 312c of the other rotating body 311c. Two connecting plates 313 are connected to the outer connecting plate 313b to be connected to. In the present embodiment, the inner connecting plate 313a is arranged inside the vehicle 10 in the width direction, and the outer connecting plate 313b is arranged outside the vehicle 10 in the width direction. The inner connecting plate 313a and the outer connecting plate 313b are alternately arranged along the sliding direction B of the display body 21.

The connecting plate 313 has a hole at a position corresponding to the rotating shaft 312, and the rotating shaft 312 is rotatably fixed in the hole. As a result, the plurality of rotating bodies 311 can be rolled together, while the rotating shaft 312 of one rotating body 311 is centered on the rotating shaft 312 of the other rotating bodies 311 connected by the connecting plate 313. , It can rotate and move.

The storage portion 23 has a linearly moving portion 231 extending in the front-rear direction of the vehicle 10 and a curved portion 232 extending from the linearly moving portion 231 toward the front of the vehicle 10. The linear motion portion 231 is configured so that a stretchable portion of the actuator 30 passes through the linear motion portion 231. Further, the curved portion 232 is configured to guide the curved display body 21 along the inner surface of the windshield 12 of the vehicle 10. The plurality of rotating bodies 311 are configured to roll in the curved portion 232 of the accommodating portion 23 as the actuator 30 expands and contracts. As a result, the movement of the vehicle 10 in the front-rear direction A caused by the expansion and contraction of the actuator 30 is caused by the plurality of rotating bodies 311 rolling in the curved portion 232 in the sliding direction B along the inner surface of the windshield 12 of the vehicle 10. Converted into exercise. As a result, the display body 21 is sent out or stored from the storage unit 23 along the inner surface of the windshield 12.

Here, as shown in FIG. 3, when the screen is enlarged, the display body 21 is more likely to shake due to the shaking of the vehicle 10 than when the display body 21 is in the position as a rearview mirror. In order to suppress this shaking, the length of the portion of the display body 21 that remains in the storage portion 23 in the sliding direction B when the screen is enlarged is designed to be relatively long. Specifically, when the display body 21 slides to the maximum, the length of the portion of the display body 21 that remains in the storage portion 23 in the slide direction B protrudes from the storage portion 23 of the display body 21. It is configured to be longer than the length in the sliding direction B of. More specifically, when the display body 21 slides to the maximum, the length of the portion of the display body 21 that remains in the storage portion 23 in the slide direction B is the length of the display body 21 in the slide direction B. It is about 2/3.

[3. effect]
According to the embodiment described in detail above, the following effects can be obtained.

(3a) The slide device 24 includes a linear actuator 30 that expands and contracts in the front-rear direction A of the vehicle 10 along the roof portion 13 of the vehicle 10, a connecting mechanism 31 that connects the actuator 30 and the display body 21. It has. Then, in the connecting mechanism 31, the plurality of connected rotating bodies 311 roll in the storage portion 23, so that the movement of the actuator 30 in the front-rear direction A is performed in the sliding direction B along the inner surface of the windshield 12. It is configured to turn into exercise. According to such a configuration, the display body 21 can be sent out and stored from the storage unit 23 along the inner surface of the windshield 12.

(3b) As a configuration for projecting the display stored in the roof of the vehicle, for example, it is conceivable to adopt a configuration such as a general electric shutter installed in a garage or the like. Specifically, the member in which the display is connected so as to extend to the rear of the vehicle can be wound and sent out to the rotating shaft to which the motor is connected by rotating the motor.

However, in such a configuration, the motor and the wound portion become thick, and it is generally impossible to follow the shape of the roof portion of a flat vehicle, which causes problems such as extra space. Occur.

On the other hand, according to the above embodiment, the linear actuator 30 which is the drive source of the display body 21 is arranged behind the display body 21, and the actuator 30 and the plurality of rotating bodies 311 are the vehicle 10. They are arranged in series along the front-back direction. According to such a configuration, as compared with the configuration capable of winding and feeding, the entire electronic mirror device 20 can have a uniform and thin shape as a whole along the shape of the roof portion 13 of the vehicle. The device as a whole can be miniaturized.

Further, in the configuration in which the winding and feeding are possible, the motor which is the driving source of rotation is arranged next to the display when viewed from the front of the vehicle, so that the electronic mirror device as a whole is in the width direction of the vehicle. The length becomes longer. However, in the above embodiment, since the linear actuator 30 which is the drive source is provided behind the vehicle 10, the length of the electronic mirror device 20 in the width direction of the vehicle 10 can also be shortened.

(3c) In the electronic mirror device 20, when the display body 21 slides to the maximum, the length of the portion staying in the storage portion 23 of the display body 21 in the slide direction B is increased from the storage portion 23 of the display body 21. It is configured to be longer than the length of the protruding portion in the sliding direction B. According to such a configuration, the length of the portion supporting the display body 21 becomes long, so that even when the display body 21 is enlarged in screen, the display body 21 shakes due to the shake of the vehicle 10. It can be suppressed.

[4. Other embodiments]
Although the embodiments of the present disclosure have been described above, it goes without saying that the present disclosure is not limited to the above-described embodiments and can take various forms.

(4a) In the above embodiment, the electronic mirror 11 functions as a rearview mirror and a side mirror, but the functions exhibited by the electronic mirror 11 are not limited to this. For example, the electronic mirror 11 may function only as a rearview mirror.

(4b) In the above embodiment, the electronic mirror 11 is arranged in the central region of the windshield 12 when viewed from the driver, but the position of the electronic mirror 11 is the upper front part in the vehicle 10, that is, in the vehicle 10. It may be anywhere as long as it is closer to the front roof portion 13.

(4c) In the above embodiment, the display body 21 is an OLED display, but the type of display is not limited to this. For example, the display body 21 may be a liquid crystal display. Further, in the above embodiment, the display body 21 is formed in a curved surface shape, but the shape of the display body 21 is not limited to this. For example, the display body 21 may have a flat plate shape. Further, the layer structure of the display is not limited to that shown in the above embodiment.

(4d) In the above embodiment, the rotating body 311 is a roller, but the structure of the rotating body 311 is not limited to this. For example, the rotating body 311 may be a plurality of spherical rotating bodies or wheels connected to both ends of a rotating shaft.

(4e) In the above embodiment, the rotating bodies 311 are close to each other as shown in FIG. 2, but the rotating bodies 311 may be separated from each other as appropriate. Further, the number of rotating bodies 311 included in the connecting mechanism 31 is not limited to the number shown in FIG. 2, and may be appropriately adjusted according to the distance between the actuator 30 and the display body 21, the slide length of the display body 21, and the like. it can.

(4f) In the above embodiment, the plurality of rotating bodies 311 are configured to roll in the curved portion 322 that curves and extends from the linear motion portion 321 toward the front of the vehicle 10, but the storage portion 23 The shape of the portion where the plurality of rotating bodies 311 roll is not limited to this. For example, it may have a winding shape or a straight extending shape in a vertical cross section of the vehicle 10 in the front-rear direction. Since the plurality of rotating bodies 311 are configured to be rotatable in a state where the adjacent rotating bodies 311 among the plurality of rotating bodies 311 are allowed to move relative to each other in the vertical direction, what kind of storage unit 23 is Even if it has a shape, a plurality of rotating bodies 311 can move inside the shape.

(4g) In order to reduce the heat of sunlight conducted from the outer surface of the roof portion 13 of the vehicle 10, the electronic mirror device 20 may be provided with heat measures. For example, a space as an air layer or a heat sink may be provided between the roof portion 13 of the vehicle 10 and the electronic mirror device 20.

(4h) In the above embodiment, the slide direction B is a direction substantially parallel to the windshield 12, but the direction of the slide direction B is the direction along the inner surface of the windshield 12 of the vehicle 10. Not limited. Specifically, the direction may be such that the front side of the surface along the roof portion 13 of the vehicle 10 is parallel to the surface inclined downward, for example, substantially vertically downward from the roof portion 13 of the vehicle 10. It may be in the extending direction.

(4i) In the above embodiment, the display body 21 is the display itself, but the display body 21 is an integral part of the display and a member different from the display, for example, a thin plate-shaped holding that holds the display in between. The member may be integrated.

(4j) The functions of one component in the above embodiment may be dispersed as a plurality of components, or the functions of the plurality of components may be integrated into one component. Further, a part of the configuration of the above embodiment may be omitted. In addition, at least a part of the configuration of the above embodiment may be added or replaced with the configuration of the other embodiment.

Claims

An electronic mirror device (20)
A display body (21) constituting an electronic mirror mounted on the front upper part of the vehicle interior of the vehicle (10) so that the driver can check the rear.
A storage unit (23) provided on the roof portion of the vehicle and configured to store the display body, and a storage unit (23).
The display body is provided with a slide device (24) that slides in a slide direction that is a direction along the inner surface of the windshield (12) of the vehicle and is a front-rear direction in the vehicle.
The slide device
A linear actuator (30) that expands and contracts in the front-rear direction of the vehicle along the roof portion of the vehicle, and
A connecting mechanism (31) for connecting the actuator and the display body is provided.
The connecting mechanism is configured such that a plurality of connected rotating bodies (311) roll in the accommodating portion to change the motion in the front-rear direction by the actuator into the motion in the sliding direction. Mirror device.
When the display body slides to the maximum, the length of the portion of the display body that remains in the storage portion in the slide direction is the slide direction of the portion of the display body that protrudes from the storage portion. The electronic mirror device according to claim 1, which is configured to be longer than the length in the above.
The accommodating portion extends from the linear moving portion (321) configured to pass the telescopic portion of the actuator and from the linear moving portion toward the front of the vehicle, and causes the display body to pass through the display body. It has a curved portion (322) that is configured to guide along the inner surface of the windshield of the vehicle.
The electronic mirror device according to claim 1 or 2, wherein the plurality of rotating bodies are configured to roll in the curved portion of the accommodating portion as the actuator expands and contracts.