JP7107287B2 - Electronic mirror device - Google Patents

Description

The present disclosure relates to an electronic mirror device.

As an alternative to conventional optical mirrors, an electronic mirror has been proposed that displays an image of the rear of the vehicle captured by a camera on a display inside the vehicle (see, for example, Patent Document 1). Electronic mirrors are capable of various displays such as drawing warning marks according to driving conditions and surrounding conditions of the vehicle based on various information obtained from the vehicle. Therefore, electronic mirrors are expected to be a technology that can contribute to improving vehicle safety compared to conventional optical mirrors.

JP 2019-001226 A

If the rearview mirror normally installed in the center of the front of the vehicle is an electronic mirror, the display that functions as an electronic mirror will display moving images when the driver is not driving, such as when the driver is driving automatically. It is conceivable to display various contents such as Here, since the rearview mirror is usually arranged in the upper part of the vehicle interior so as not to obstruct the driver's field of vision, the display that constitutes the rearview mirror is also configured with a small screen. However, when the driver is not driving the vehicle, there is no problem even if the front view of the vehicle is obstructed. is preferred.

As a method for realizing such switching, a large display is housed in the roof of the vehicle, and when the driver is driving, part of the display protrudes above the windshield, allowing the driver to control the vehicle. In a situation where the display is not, a configuration in which the display protrudes further can be considered.

However, as a result of investigations by the present inventors, it was found that the size of the device may increase if such switching is attempted.
One aspect of the present disclosure provides a compact electronic mirror device that can protrude a display as an electronic mirror housed in the roof of a vehicle.

One aspect of the present disclosure is an electronic mirror device (20) comprising a display body (21), a storage section (23), and a slide device (24). The display constitutes an electronic mirror mounted in the front upper part of the interior of the vehicle (10) so that the driver can check the rear. The storage portion is provided in the roof portion of the vehicle and stores the display body. The slide device slides the display body in a sliding direction along the inner surface of the windshield (12) of the vehicle, which is the longitudinal direction of the vehicle. The slide device also includes an actuator (30) and a coupling mechanism (31). The actuator is a direct-acting actuator that expands and contracts in the longitudinal direction of the vehicle along the roof of the vehicle. The connection mechanism connects the actuator and the display body. In addition, the connecting mechanism is configured to change the longitudinal movement of the actuator into a sliding movement by rolling the connected rotating bodies (311) in the housing.

Such a configuration provides a compact electronic mirror device.

It is a figure which shows a mode that a display body protrudes. It is a figure which shows the cross section of an electronic mirror apparatus. It is a figure which shows the cross section of the electronic mirror apparatus at the time of enlarging a screen.

Exemplary embodiments of the present disclosure are described below with reference to the drawings.
[1. overall structure]
As shown in FIG. 1, the electronic mirror 11 is a mirror mounted in the front upper part of the interior of the vehicle 10 so that the driver can check the rear. Specifically, the electronic mirror 11 is arranged in a central region above the windshield 12 as seen from the driver. That is, the electronic mirror 11 is arranged at the position of a so-called room 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. It is 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 . 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 range, remaining battery capacity, etc.), and also displays the destination by the car navigation system. It is configured to display guidance information and the like.

A display 21 having a display functioning as the electronic mirror 11 can be stored in the roof portion 13 of the vehicle 10 as shown in FIG. When the driver is driving, the display 21 is located at a position that does not block the driver's field of vision, that is, at the position of the room mirror. Specifically, the lower part of the display body 21 has a horizontally long belt shape and protrudes from the roof part 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 driving mode is switched from the driving mode to the automatic driving mode and the driver makes a request, the entire display body 21 protrudes further from the roof part 13 to form a large screen, as indicated by the dashed line in FIG. is configured to Specifically, the display body 21 is configured to protrude to an area that obstructs the driver's field of vision during driving.

The display unit 21 is configured to be able to display a television screen, a DVD playback screen, a game screen, a chat screen, a computer software execution screen, etc., in addition to the above-described various travel information and destination guidance information. . When the screen is enlarged as described above, for example, the user can perform operations such as playback of the TV or DVD, games, chatting, and execution of personal computer software using an externally connected controller, keyboard, or the like. is configured to

[2. Electronic mirror device]
Next, an 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 section 23 that stores the display body 21 , and a slide device 24 that slides the display body 21 .

The display 21 is a thin OLED (Organic Light-Emitting Diode) display. Specifically, the OLED elements 211 are arranged two-dimensionally 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 the surface of the OLED element 211 is not easily damaged 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. Thereby, for example, electrical noise on the display image can be suppressed. As the metal, aluminum is preferably used for weight reduction.

Further, the display body 21 is formed in a curved surface shape such that its surface is arcuate in a vertical cross section perpendicular to the width direction of the vehicle 10 .
The storage portion 23 is mounted on the roof portion 13 of the vehicle 10 and stores the display body 21 therein. In this embodiment, a plurality of rotating bodies 311 of the slide device 24, which will be described later, are also accommodated.

The slide device 24 is connected to the display body 21 and 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 the front-rear direction of the vehicle 10 . there is In this embodiment, the sliding direction B is a direction substantially parallel to the windshield 12 . Further, the slide device 24 is configured such that the display body 21 protrudes at least from the position of the rearview mirror to an area that obstructs the driver's field of vision during driving.

The slide device 24 has an actuator 30 and a coupling mechanism 31 .
The actuator 30 is a direct-acting actuator that is arranged behind the vehicle 10 relative to the display body 21 and expands and contracts in the longitudinal direction A of the vehicle 10 along the roof portion 13 of the vehicle 10 . A direct-acting actuator is an actuator that converts rotary motion generated by driving a motor into linear motion.

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

Further, the rotating shafts 312 of two adjacent rotating bodies 311 are connected by a flat connecting plate 313 . More specifically, as shown in FIG. 2, for one rotating body 311a, an inner connecting plate 313a that connects with the rotating shaft 312b of the front or rear rotating body 311b, and the rotating shaft 312c of the other rotating body 311c. Two connecting plates 313 are connected, with an outer connecting plate 313b connecting to the . In this embodiment, the inner connection plate 313a is arranged inside the vehicle 10 in the width direction, and the outside connection plate 313b is arranged outside the vehicle 10 in the width direction. The inner connecting plates 313 a and the outer connecting plates 313 b 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 roll together, while the rotating shaft 312 of one rotating body 311 rotates around the rotating shaft 312 of the other rotating body 311 connected by the connecting plate 313 . , can be rotated.

The storage portion 23 has a linear motion portion 231 that extends in the front-rear direction of the vehicle 10 and a curved portion 232 that curves and extends from the linear motion portion 231 toward the front of the vehicle 10 . The direct acting portion 231 is configured such that the expanding and contracting portion of the actuator 30 passes through it. 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 within the curved portion 232 of the storage 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 shifted 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 inside the curved portion 232 . converted to motion. As a result, the display body 21 is sent out or stored from the storage portion 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 positioned as the room mirror. In order to suppress this shaking, the length in the sliding direction B of the portion of the display body 21 that remains in the housing portion 23 when the screen is enlarged is designed to be relatively long. Specifically, when the display body 21 is slid to the maximum, the length in the sliding direction B of the portion of the display body 21 remaining in the housing portion 23 is the portion of the display body 21 protruding from the housing portion 23. is longer than the length in the sliding direction B. More specifically, when the display body 21 is slid to the maximum, the length in the sliding direction B of the portion of the display body 21 remaining in the housing portion 23 is the length of the display body 21 in the sliding direction B. It is about 2/3.

[3. effect]
According to the embodiment detailed above, the following effects are obtained.
(3a) The slide device 24 includes a direct-acting actuator 30 that expands and contracts in the longitudinal 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 The connecting mechanism 31 converts the movement of the actuator 30 in the longitudinal direction A in the sliding direction B along the inner surface of the windshield 12 by rolling the connected rotating bodies 311 in the storage portion 23 . Configured to convert to exercise. According to such a configuration, the display 21 can be delivered and stored from the storage section 23 along the inner surface of the windshield 12 .

(3b) As a configuration for protruding the display housed 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, a member connecting the display so as to extend to the rear of the vehicle can be wound around and delivered to a 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 not possible to conform to the shape of the roof of a vehicle, which is generally flat, resulting in extra space. Occur.

In contrast, according to the above-described embodiment, the direct-acting actuator 30 that is the driving 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 connected to the vehicle 10 . They are arranged in series along the front-rear direction. According to such a configuration, compared with the above-described configuration that enables winding and delivery, the electronic mirror device 20 as a whole can be formed in a generally uniform and thin shape along the shape of the roof portion 13 of the vehicle. It is possible to reduce the size of the device as a whole.

In addition, in the configuration that enables winding and delivery, the motor, which is the driving source for rotation, is arranged beside the display when viewed from the front of the vehicle. length increases. However, in the above-described embodiment, since the direct-acting actuator 30, which is the driving source, is provided behind the vehicle 10, the length of the electronic mirror device 20 in the width direction of the vehicle 10 can be shortened.

(3c) In the electronic mirror device 20, when the display body 21 is slid to the maximum, the length in the sliding direction B of the portion of the display body 21 remaining in the storage part 23 is set to be from the storage part 23 of the display body 21. It is configured to be longer than the length in the sliding direction B of the overhanging portion. With such a configuration, since the length of the portion supporting the display body 21 is increased, even if the screen of the display body 21 is enlarged, the shaking of the display body 21 caused by the shaking of the vehicle 10 can be prevented. can be suppressed.

[4. Other embodiments]
Although 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 can take various forms.

(4a) In the above embodiment, the electronic mirror 11 functions as a room mirror and a side mirror, but the function that the electronic mirror 11 exhibits is not limited to this. For example, the electronic mirror 11 may function only as a room mirror.

(4b) In the above embodiment, the electronic mirror 11 is arranged in the central region of the windshield 12 as seen from the driver. It may be anywhere near the front roof portion 13 .

(4c) In the above embodiment, the display 21 is an OLED display, but the type of display is not limited to this. For example, the display 21 may be a liquid crystal display. Further, in the above-described 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 21 may be flat. Furthermore, the layer structure of the display is not limited to that shown 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 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. 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 direct acting portion 321 toward the front of the vehicle 10 . , the shape of the portion where the plurality of rotating bodies 311 roll is not limited to this. For example, the vertical cross-section in the front-rear direction of the vehicle 10 may have a meandering shape or a straight shape. Since the plurality of rotating bodies 311 are configured to be able to roll in a state in which the adjacent rotating bodies 311 are allowed to move relative to each other in the vertical direction, the interior of the storage section 23 can be changed regardless of its shape. A plurality of rotating bodies 311 can move.
(4g) The electronic mirror device 20 may be provided with heat countermeasures in order to mitigate the heat of sunlight conducted from the outer surface of the roof portion 13 of the vehicle 10 . 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 sliding direction B is a direction substantially parallel to the windshield 12. However, if the direction of the sliding direction B is along the inner surface of the windshield 12 of the vehicle 10, it will be the same. Not limited. Specifically, the front side of the vehicle 10 may be in a direction parallel to the surface that is inclined downward from the surface along the roof portion 13 of the vehicle 10. For example, the surface of the vehicle 10 may be 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 integrated with the display and a member different from the display, for example, a thin plate-like holder that sandwiches and holds the display. It may be integrated with the member.

(4j) The function of one component in the above embodiments may be distributed as multiple components, or the functions of multiple components may be integrated into one component. Also, part of the configuration of the above embodiment may be omitted. Also, at least a part of the configuration of the above embodiment may be added, replaced, etc. with respect to the configuration of the other above embodiment.

DESCRIPTION OF SYMBOLS 10... Vehicle 11... Electronic mirror 12... Windshield 13... Roof part 20... Electronic mirror apparatus 21... Display 23... Storage part 24... Slide apparatus 30... Actuator 31... Connection mechanism 32... Storage portion 231 Linear motion portion 232 Curved portion 311 Rotating body 312 Rotating shaft 313 Connection plate 321 Linear motion portion 322 Curved portion.

Claims (2)

a display (21) constituting an electronic mirror mounted in the upper front part of the interior of the vehicle (10) so that the driver can check the rear;
a storage portion (23) provided in the roof portion of the vehicle for storing the display body;
a slide device (24) for sliding the display body in a sliding direction along the inner surface of the windshield (12) of the vehicle, which is the front-rear direction of the vehicle;
The slide device
a direct-acting actuator (30) that expands and contracts in the longitudinal direction of the vehicle along the roof of the vehicle;
A connection mechanism (31) that connects the actuator and the display body,
The connecting mechanism is configured such that the plurality of connected rotating bodies (311) rolls in the storage section, thereby changing the movement in the front-rear direction by the actuator to the movement in the sliding direction ,
The storage portion includes a linear motion portion (321) through which the expanding and contracting portion of the actuator passes, and a linear motion portion that extends in a curved manner toward the front of the vehicle from the linear motion portion so as to move the display body to the a curved portion (322) configured to guide along the inner surface of the windshield of the vehicle;
An electronic mirror device (20) , wherein the plurality of rotating bodies are configured to roll within the curved portion of the storage portion as the actuator expands and contracts . When the display body is slid to the maximum, the length in the sliding direction of the portion of the display body remaining in the storage portion is equal to the length in the sliding direction of the portion of the display body protruding from the storage portion. 2. The electronic mirror device according to claim 1, configured to be longer than the length at .

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