CN114007904A

CN114007904A - Electronic mirror device

Info

Publication number: CN114007904A
Application number: CN202080045908.8A
Authority: CN
Inventors: 安田一也; 大西贵裕
Original assignee: Denso Corp
Current assignee: Denso Corp
Priority date: 2019-07-26
Filing date: 2020-07-20
Publication date: 2022-02-01
Also published as: JP7107287B2; JP2021020557A; WO2021020196A1

Abstract

The present invention relates to an electron mirror device. The electron mirror device (20) is provided with: a display body (21), a storage section (23), and a slide device (24). The sliding device slides the display body in a sliding direction which is a direction along an inner surface of a windshield of the vehicle and is a front-rear direction in the vehicle. The sliding device is also provided with an actuator (30) and a connecting mechanism (31). The actuator is a direct-acting actuator that extends and contracts in the front-rear direction of the vehicle along the roof portion of the vehicle. The connecting mechanism connects the actuator and the display body. The coupling mechanism is configured to convert the movement in the forward-backward direction by the actuator into the movement in the sliding direction by the plurality of coupled rotating bodies rolling in the housing section.

Description

Electronic mirror device

Cross Reference to Related Applications

The international application claims priority to japanese patent application No. 2019-.

Technical Field

The present disclosure relates to an electron mirror device.

Background

In place of the conventional optical mirror, an electronic mirror has been proposed which displays an image of the rear of the vehicle captured by a camera on a display in the vehicle cabin (see, for example, patent document 1). The electronic mirror can draw warning marks and the like to display various kinds of information obtained from the vehicle according to the driving condition and the surrounding condition of the vehicle. Therefore, the electronic mirror is expected as a technique that can contribute to improvement in safety of a vehicle, as compared with a conventional optical mirror.

Patent document 1: japanese patent laid-open publication No. 2019-001226

When the interior mirror mounted at the center of the front in the vehicle cabin is an electronic mirror, it is conceivable to display various contents such as a moving image on a display functioning as an electronic mirror in a scene in which the driver does not drive, such as a scene in which automatic driving is performed. Here, the interior mirror is generally disposed above the vehicle interior so as not to obstruct the view of the driver, and therefore the display constituting the interior mirror is also formed with a small screen. However, in a scene where the driver is not driving the vehicle, there is no problem even if the field of view in front of the vehicle is obstructed, and therefore it is preferable to switch from a small screen as an interior mirror to a large screen for displaying the content.

As a method for realizing such a handover, the following configuration is considered: a large display is housed in a roof portion of a vehicle, and a part of the display protrudes above a windshield in a scene in which a driver drives the vehicle, and the display is further protruded in a scene in which the driver does not drive the vehicle.

However, as a result of detailed studies by the present inventors, it was found that there was a problem that the size of the apparatus was increased when such switching was to be achieved.

Disclosure of Invention

An aspect of the present disclosure provides a small-sized electronic mirror device capable of protruding a display as an electronic mirror housed in a roof portion of a vehicle.

An aspect of the present disclosure is an electronic mirror device including: display body, storage portion and slider. The display body constitutes an electronic mirror mounted on the upper front portion in the vehicle compartment of the vehicle so that the driver can confirm the rear. The storage unit is provided at a roof of the vehicle and stores the display unit. The sliding device slides the display body in a sliding direction which is a direction along a surface on the inner side of a windshield of the vehicle and is a front-rear direction in the vehicle. The sliding device further includes an actuator and a coupling mechanism. The actuator is a direct-acting actuator that extends and contracts in the front-rear direction of the vehicle along the roof portion of the vehicle. The connecting mechanism connects the actuator and the display body. The coupling mechanism is configured to convert the movement in the forward-backward direction by the actuator into the movement in the sliding direction by the plurality of coupled rotating bodies rolling in the housing section.

With such a configuration, a compact electronic mirror device is provided.

Drawings

Fig. 1 is a diagram showing how a display body protrudes.

Fig. 2 is a view showing a cross section of the electron mirror device.

Fig. 3 is a cross-sectional view of the electron mirror device in the case of enlarging the screen.

Detailed Description

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 upper front portion in the cabin of the vehicle 10 so that the driver can confirm the rear. Specifically, the electronic mirror 11 is disposed in a central region above the windshield 12 as viewed from the driver. That is, the electronic mirror 11 is disposed at a position of a so-called interior mirror. The electronic mirror 11 functions as an interior mirror, for example, and is configured to display an image obtained by imaging the rear of the vehicle 10 and an image obtained by imaging the rear of the driver (e.g., a rear seat or the like) in the vehicle 10. The electronic mirror 11 also functions as a rearview mirror, and is configured to display an image captured on the rear side of the vehicle 10. The electronic mirror 11 is configured to display various kinds of travel information (for example, a travel speed, a travel mode, a travel distance, a cruising distance, a remaining battery level, and the like) of the vehicle 10, destination guidance information by a car navigation system, and the like, in addition to the images.

As shown in fig. 1, a display body 21 having a display functioning as the electronic mirror 11 can be housed in the roof portion 13 of the vehicle 10. In a situation where the driver is driving, the display body 21 is present at a position not obstructing the view of the driver, that is, at a position serving as the above-described interior mirror. Specifically, a portion of the display body 21 on the lower side is in the form of a laterally long belt 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 accommodated in the roof portion 13. On the other hand, when the driver requests a request to switch from driving by the driver to automatic driving, the display body 21 is configured to protrude further from the roof portion 13 as a whole to form a large screen, as shown by the broken line in fig. 1. Specifically, the display body 21 is configured to be projected so as to reach a region that obstructs the field of view of the driver during driving.

The display body 21 is configured to be capable of displaying a television screen, a DVD playback screen, a game screen, a chat screen, an execution screen of personal computer software, and the like, in addition to the various types of travel information and destination guidance information described above. In the case of a large screen as described above, the user can perform operations such as playing back the television and DVD, playing games, chatting, and executing personal computer software, for example, via an externally connected controller, keyboard, and the like.

[2. electronic mirror device ]

Next, an electronic mirror device 20 as an embodiment of the present disclosure will be described with reference to fig. 2. The electron mirror device 20 includes: the display body 21, a housing section 23 for housing 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 a two-dimensional direction on the metal thin plate 213, and form a display screen. A protective layer 212 made of resin is formed on the surface of the OLED element 211 so as to be less likely to be damaged when slid by the slider 24. The surface of the display body 21 opposite to the display screen is formed of metal to electrically shield the display body 21 from the outside. This can suppress, for example, electrical noise in the display image. As the metal, aluminum is preferably used for weight reduction.

Further, display body 21 is formed in a curved surface shape having an arc-shaped surface in a vertical cross section orthogonal to the width direction of vehicle 10.

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

The sliding device 24 is coupled to the display unit 21 and configured to slide the display unit 21. Specifically, the slide device 24 is configured to slide the display body 21 in a sliding direction B, which is a direction along the inner surface of the windshield 12 of the vehicle 10 and is a front-rear direction in the vehicle 10. In the present embodiment, the sliding direction B is a direction substantially parallel to the windshield 12. The slide device 24 is configured to project the display body 21 at least from a position as an interior mirror to a region that obstructs the field of view of the driver during driving.

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

The actuator 30 is a direct-acting actuator that is disposed behind the display body 21 with respect to the vehicle 10 and extends and contracts in the front-rear direction a of the vehicle 10 along the roof portion 13 of the vehicle 10. The direct-acting actuator is an actuator that converts rotational motion generated by driving a motor into linear motion.

The coupling mechanism 31 includes a plurality of rotating bodies 311, and a plurality of coupling plates 313 that couple the rotating shafts 312 of adjacent rotating bodies 311 of the plurality of rotating bodies 311.

The plurality of rotating bodies 311 are configured to be capable of rolling in the housing portion 23. Specifically, the storage section 23 is provided with, for example, a guide rail, not shown, along which the plurality of rotating bodies 311 roll in the storage section 23.

The rotation shafts 312 of two adjacent rotation bodies 311 of the plurality of rotation bodies 311 are coupled to each other by a flat plate-shaped coupling plate 313. More specifically, as shown in fig. 2, two coupling plates 313, i.e., an inner coupling plate 313a coupled to the rotation shaft 312b of the front or rear rotating body 311b and an outer coupling plate 313b coupled to the rotation shaft 312c of the other rotating body 311c, are coupled to one rotating body 311 a. In the present embodiment, the inner side linking plate 313a is disposed on the inner side in the width direction of the vehicle 10, and the outer side linking plate 313b is disposed on the outer side in the width direction of the vehicle 10. Inner coupling plates 313a and outer coupling plates 313B are alternately arranged along sliding direction B of display body 21.

The coupling plate 313 has a hole formed at a position corresponding to the rotary shaft 312, and the rotary shaft 312 is rotatably fixed in the hole. Thereby, the plurality of rotating bodies 311 can roll integrally, and the rotating shaft 312 of one rotating body 311 can rotate about the rotating shaft 312 of the other rotating body 311 connected by the connecting plate 313.

The housing portion 23 includes a linear motion portion 231 extending in the front-rear direction of the vehicle 10, and a curved portion 232 curved and extending from the linear motion portion 231 toward the front of the vehicle 10. The linear motion unit 231 is configured to pass a portion of the actuator 30 that extends and contracts. The bending portion 232 is configured to guide the bent 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 housing portion 23 in accordance with the expansion and contraction movement of the actuator 30. Thus, the movement in the front-rear direction a of the vehicle 10 caused by the expansion and contraction of the actuator 30 is converted into a movement in the sliding direction B along the inner surface of the windshield 12 of the vehicle 10 by the plurality of rotating bodies 311 rolling in the curved portion 232. As a result, the display body 21 is conveyed from the housing portion 23 along the inner surface of the windshield 12 or housed in the housing portion 23.

Here, as shown in fig. 3, when the screen size is increased, the display body 21 is more likely to shake due to the shaking of the vehicle 10 than when the display body 21 is located at a position serving as an interior mirror. In order to suppress the wobbling, the display body 21 is designed to have a relatively long length in the sliding direction B of the portion remaining in the housing portion 23 when the screen is enlarged. Specifically, when the display body 21 slides to the maximum, the length of the portion of the display body 21 remaining in the housing portion 23 in the sliding direction B is configured to be longer than the length of the portion of the display body 21 protruding from the housing portion 23 in the sliding direction B. More specifically, when display body 21 slides to the maximum, the length of the portion of display body 21 remaining in storage section 23 in the sliding direction B is about 2/3 of the length of display body 21 in the sliding direction B.

[3. Effect ]

According to the above-described embodiments, the following effects are obtained.

(3a) The sliding device 24 includes: a direct-acting actuator 30 that extends and contracts in the front-rear direction a of the vehicle 10 along the roof portion 13 of the vehicle 10; and a coupling mechanism 31 for coupling the actuator 30 and the display body 21. The coupling mechanism 31 is configured to convert the movement in the front-rear direction a by the actuator 30 into a movement in the sliding direction B along the inner surface of the windshield 12 by the plurality of coupled rotating bodies 311 rolling in the housing portion 23. With this configuration, the display body 21 can be sent out from the housing portion 23 and housed in the housing portion 23 along the inner surface of the windshield 12.

(3b) As a structure for projecting a display housed in a roof portion of a vehicle, for example, a structure of a general electric rolling shutter installed in a garage or the like is considered. Specifically, the display device is configured such that a member that extends rearward of the vehicle and connects the display device can be wound around a rotating shaft to which the motor is connected and can be fed out from the rotating shaft by rotating the motor.

However, in such a structure, the motor and the wound portion become thick, and generally cannot follow the shape of the roof portion of a flat vehicle, and a problem such as extra space is generated.

In contrast, according to the above embodiment, the direct-acting actuator 30 as the drive source of the display body 21 is disposed rearward of the display body 21, and the actuator 30 and the plurality of rotating bodies 311 are disposed in series along the front-rear direction of the vehicle 10. According to such a configuration, as compared with the above-described configuration that enables winding and feeding, the entire electronic mirror device 20 can be made uniform and thin along the shape of the roof portion 13 of the vehicle as a whole, and the entire device can be made compact.

In the above-described configuration capable of winding and unwinding, the motor serving as the driving source for rotation is disposed beside the display as viewed from the front of the vehicle, and therefore the length of the entire electronic mirror device in the width direction of the vehicle is increased. However, in the above-described embodiment, since the direct-drive actuator 30 as the drive source is provided at the rear of the vehicle 10, the length of the electronic mirror device 20 in the width direction of the vehicle 10 can be shortened.

(3c) The electron mirror device 20 is configured such that, when the display body 21 slides to the maximum, the length of the portion of the display body 21 remaining in the housing 23 in the sliding direction B is longer than the length of the portion of the display body 21 protruding from the housing 23 in the sliding direction B. According to such a configuration, since the length of the portion supporting display body 21 is increased, even when display body 21 is made large, shaking of display body 21 accompanying shaking of vehicle 10 can be suppressed.

[4 ] other embodiments ]

While the embodiments of the present disclosure have been described above, it is needless to say that the present disclosure is not limited to the above embodiments, and various embodiments may be adopted.

(4a) In the above embodiment, the electronic mirror 11 functions as an interior mirror and a rearview mirror, but the function of the electronic mirror 11 is not limited to this. For example, the electronic mirror 11 may function only as an interior mirror.

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

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

(4d) In the above embodiment, the rotating body 311 is a roller, but the structure of the rotating body 311 is not limited thereto. For example, the rotating body 311 may be a plurality of spherical rotating bodies or wheels connected to both ends of the 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 appropriately separated from each other. The number of rotating bodies 311 included in coupling mechanism 31 is not limited to the number shown in fig. 2, and can be appropriately adjusted according to the distance between actuator 30 and display unit 21, the sliding length of display unit 21, and the like.

(4f) In the above embodiment, the plurality of rotating bodies 311 are configured to roll in the curved portion 322 that is curved and extends from the linear motion portion 321 toward the front of the vehicle 10, but the shape of the portion of the housing portion 23 where the plurality of rotating bodies 311 roll is not limited to this. For example, the vehicle 10 may have a shape that meanders in a vertical cross section in the front-rear direction, or may have a shape that extends straight. Since the plurality of rotating bodies 311 are configured to be rollable while allowing vertical relative movement between adjacent rotating bodies 311 among the plurality of rotating bodies 311, the plurality of rotating bodies 311 can move inside the housing portion 23 regardless of the shape thereof.

(4g) In order to mitigate the heat of the sunlight transmitted from the outer surface of the roof portion 13 of the vehicle 10, a countermeasure against the heat may be taken for the electronic mirror device 20. For example, a space or a radiator may be provided as an air layer between the roof portion 13 of the vehicle 10 and the electronic mirror device 20.

(4h) In the above embodiment, the sliding direction B is a direction substantially parallel to the windshield 12, but the direction of the sliding direction B is not limited thereto, and may be a direction along the inner surface of the windshield 12 of the vehicle 10. Specifically, the direction may be a direction parallel to a surface inclined downward further forward than the surface along the roof portion 13 of the vehicle 10, and may be, for example, a direction extending downward substantially perpendicularly from the roof portion 13 of the vehicle 10.

(4i) In the above embodiment, the display body 21 is the display itself, but the display body 21 may be a member in which the display and a member different from the display are integrated, for example, a member in which the display and a thin plate-like holding member holding the display therebetween are integrated.

(4j) The functions of one component in the above embodiments may be distributed into a plurality of components, or the functions of a plurality of components may be combined into one component. In addition, a part of the structure of the above embodiment may be omitted. At least a part of the structure of the above-described embodiment may be added to or replaced with the structure of the other above-described embodiment.

Claims

1. An electronic mirror device (20) is provided with:

a display body (21) which constitutes an electronic mirror mounted on the upper front portion in the cabin of the vehicle (10) so that the driver can confirm the rear;

a storage unit (23) that is provided on the roof of the vehicle and that stores the display unit; and

a sliding device (24) that slides the display body in a sliding direction that is a direction along an inner surface of a windshield (12) of the vehicle and that is a front-rear direction in the vehicle,

the sliding device includes:

a direct-acting actuator (30) that extends and contracts in the front-rear direction of the vehicle along the roof of the vehicle; and

a connecting mechanism (31) for connecting the actuator and the display body,

the coupling mechanism is configured to convert a movement in a front-rear direction by the actuator into a movement in the sliding direction by rolling the coupled plurality of rotating bodies (311) in the housing section.

2. An electron mirror apparatus according to claim 1,

the length of a portion of the display body remaining in the housing portion in the sliding direction is configured to be longer than the length of a portion of the display body protruding from the housing portion in the sliding direction when the display body slides to the maximum.

3. An electron mirror apparatus according to claim 1 or 2,

the storage part comprises: a linear motion unit (321) configured to pass a portion of the actuator that extends and contracts; and a bending section (322) which is configured to bend and extend from the linear motion section toward the front of the vehicle and guide the display body along the inner surface of the windshield of the vehicle,

the plurality of rotating bodies are configured to roll in the curved portion of the housing portion in accordance with the expansion and contraction movement of the actuator.