JP4648730B2 - Vehicle display device - Google Patents

Description

  The present invention relates to a display device for a vehicle, and more specifically, reflects an image displayed on a display source on a reflection mirror provided so as to be able to stand and tilt with respect to an instrument panel of the vehicle, thereby windshielding the vehicle. The present invention relates to a vehicular display device that superimposes a virtual image of the image projected on the projection area and a foreground of the vehicle to be viewed through the windshield from an eye point of the vehicle.

  In recent years, with the increase and diversification of information required by the driver during driving, a vehicle that displays a virtual image on the windshield and visually displays information that cannot be displayed due to space in the meter unit A projection display unit called a head-up display device (HUD) that allows the foreground to be superimposed and viewed is used.

  In addition, it is said that the main information that humans receive from outside is through vision, and when driving a vehicle, the importance of vision is very high. Therefore, the earlier you detect obstacles in the direction of travel, the more you can respond, so the night driving visibility support device (Night Vision) is commercially available.

  This night vision has an infrared camera, a computer, and the above-described HUD installed at the front of the vehicle body. Infrared (heat) information radiated from the object by the infrared camera is projected as a virtual image of a monochrome image by the HUD in front of the driver, so that invisible obstacles lurking in the darkness, rain or fog can not open the front of the vehicle The driver is made aware of obstacles.

  In the HUD display, the HUD display light is reflected by projection members such as a combiner and a windshield (front glass), and the display is made visible to the driver within the driving field of view. In other words, compared to conventional meters and displays, the display position can be reduced by reducing the angle at which the driver looks down to see the display, shortening the eye movement time, and making the display distance far. The aim is to make it easier to focus the eyes when moving from the foreground to the display.

  In addition, large HUDs such as night vision are not used in the daytime and it is desirable to have a wide field of view in front of the vehicle. Therefore, the combiner is provided with a turning mechanism, and the combiner is installed in the vehicle instrument when not in use. It is stored inside the panel.

  Therefore, when it is not necessary to display the distant display of the display source, the reflecting member arranged in front of the occupant's eye point in order to make the display source visible as a virtual image in the distance, the line of sight from the eye point to the display source displayed as a virtual image. Hitherto, it has already been proposed to employ a foldable reflecting member so that it can be retracted (see Patent Document 1).

In addition, a display device for a vehicle that can quickly open and close the reflection mirror and can easily adjust the reflection angle of the reflection mirror has been proposed. The vehicle display device includes a reflecting unit that reflects display light that is instructed in an openable / closable state and that is emitted from a display, a first driving unit that opens and closes the reflecting unit, and a first unit that adjusts an angle of the reflecting unit The first and second driving means, respectively, to enable quick opening and closing of the reflecting member, and the reflecting means. The angle can be easily adjusted (see Patent Document 2).
JP-A-9-315182 JP 2004-196228 A

  However, in recent years, due to an increase in the number of system parts and the like mounted on the vehicle, the space in the instrument panel where an optional HUD device or the like can be installed is limited. However, it is necessary to realize further miniaturization because it is restricted by various contents such as an instrument, an air conditioning duct, a wire harness, and a defroster opening.

  Also, in the vehicle display device disclosed in Patent Document 2, since the mechanism for opening and closing the reflecting mirror and the mechanism for changing the angle are linked, the angle can be adjusted unless the reflecting mirror is opened to a predetermined angular position. Therefore, there is a problem that it is difficult to adjust the angle and it is difficult to downsize the apparatus.

  Furthermore, in the vehicle display device that performs fine adjustment of the reflecting member using a stopper, a further problem has occurred. FIG. 5 is a diagram for explaining a problem in the case of using the conventional angle adjustment of the reflecting member. As shown in FIG. 5, the vehicular display device includes a reflecting member 4, a rotating mechanism 12 that rotates a rotating shaft 6 that rotates together with the reflecting member 4, and a stopper that finely adjusts a set angle of the reflecting member 4. 141.

  When the reflecting mirror 4 is in an upright open state and the reflecting member 4 is closed and an attempt is made to finely adjust the angle in the direction X, the turning of the reflecting mirror 4 is restricted by the turning mechanism 12. Structurally, the stopper 141 cannot be moved in the direction Z by the reflection mirror 4. Therefore, when the angle of the reflection mirror 4 is finely adjusted, the reflection mirror 4 is first rotated in the closing direction X to some extent by the rotation mechanism 12 (1). Then, the stopper 141 is set to a set value (2), and is rotated in the opening direction Y of the reflection mirror 4 by the rotation mechanism 12 to press the reflection mirror 4 against the stopper 141. For this reason, each time the fine adjustment of the reflection mirror 4 is performed, the reflection mirror 4 must be moved back and forth.

  Further, the reflection mirror and the angle of the reflection mirror are adjusted so as to be pivotally supported within a predetermined rotation range on a base unit provided so as to be able to stand up and tilt with respect to the instrument panel of the vehicle. There is also a vehicle display device that incorporates an angle adjustment mechanism and adjusts the reflection angle of the reflection mirror within the rotation range by the angle adjustment mechanism when the base unit is standing upright. There is a problem that a mirror adjustment mechanism must be incorporated, and the base unit becomes large, and the apparatus cannot be miniaturized.

  Therefore, in view of the above-described problems, an object of the present invention is to provide a vehicle display device that can easily adjust the angle of the reflecting member and contribute to downsizing.

In order to solve the above-described problems, the vehicle display device according to claim 1 is configured to reflect an image displayed on a display source on a reflection mirror provided so as to be able to stand and tilt with respect to an instrument panel of the vehicle. In the vehicular display device, the virtual image of the image projected onto the projection area of the windshield of the vehicle and the foreground of the vehicle to be visually recognized through the windshield from the eyepoint of the vehicle are superimposed, A cover including a mounting surface to which the reflecting mirror is mounted and a pair of legs extending from the mounting surface; a rotating shaft that pivotally supports the pair of legs of the cover; and the rotating shaft The cover is fixed to the rotating shaft so as to rotate together with the cover and covers the range from the standing state to the tilted state of the reflecting mirror in the case main body of the vehicle display device. And another member of the base member and the cover that together rotated, a frame stopper provided on the case body defining the rotation range of the opening direction of the rotating shaft and the base member, upright position of the reflection mirror When the reflection mirror that rotates together with the base member according to the movement of the base member comes into contact with the cover when the reflection angle reaches a preset angle, the cover rotates together with the base member in the opening direction. A stopper for preventing the base member, an adjusting means for adjusting a reflection angle of the reflection mirror by moving the stopper that is in contact with the cover in a state where the base member and the frame stopper are in contact with each other, and the cover wherein provided between the base member, to characterized in that it comprises a biasing means for constantly urging the cover in the direction of movement of the upright of the reflection mirror .

According to the vehicle display apparatus of the present invention described in the first aspect, the base member of the tilting state, rotates with axially supported by the cover rotation axis, the reflection mirror of the cover is a predetermined reflection When it is rotated to the angular position, the stopper comes into contact with the cover and the reflection mirror is prevented from rotating . At this time, when the base member is not in the standing state, the base member continues to rotate until it comes into contact with the frame stopper, and the reflection angle of the reflecting mirror is held by rotating with respect to the base member. Then, when adjusting the reflection angle of the reflection mirror, the adjustment is performed by moving the stopper in contact with the reflection mirror by the adjusting means. The cover is urged by the urging means in the moving direction of the reflecting mirror to the standing state.

According to a second aspect of the present invention, there is provided a display device for a vehicle according to the first aspect , wherein the rotating shaft has at least an upper edge portion of the reflecting mirror disposed outside the instrument panel. The cover is pivotally supported so as to protrude to the position, and the stopper prevents the cover from rotating so that the reflection angle of the reflection mirror is not visible from the eye range by the instrument panel. It is characterized by doing so.

According to the vehicle display device of the present invention described in claim 2 , the upper edge of the reflecting mirror protrudes outside the instrument panel in accordance with the change of the base member from the tilted state to the standing state. It is rotated by a rotation shaft . The moved cover is blocked by a stopper at a position where it is not visible from the eye range of the vehicle by the instrument panel.

As described above, according to the vehicle display device of the first aspect of the present invention , the base member is fixed to the rotating shaft that pivotally supports the cover to which the reflecting mirror is attached , and this base member. A stopper is provided to prevent the reflection mirror from moving at a position of a predetermined reflection angle when the lens moves toward the standing state together with the cover , and the reflection mirror on which the base member is pivoted is rotated by this stopper. Thus, since the reflection angle is adjusted, the adjustment mechanism of the reflection mirror can be simplified because the influence of the drive mechanism that operates the base member is not affected when the reflection angle of the reflection mirror is adjusted. In addition, it is not necessary to form a mechanism having a stopper for adjusting the reflection angle of the reflection mirror integrally with the base member, and it can be formed as a mirror unit including only the reflection mirror and the base member, and the mechanism moves the base member. Since a mechanism other than the mechanism for moving the stopper is not required, the mirror unit can be lightened and simplified. Therefore, it is possible to easily adjust the angle of the reflecting member and contribute to downsizing.

According to the invention described in claim 2 , in addition to the effect of the invention described in claim 1 , the cover is rotated by the rotation shaft so that at least the upper edge portion of the reflection mirror protrudes to the outside of the instrument panel. Since the stopper prevents the movement of the instrument panel at a position where it is not visible from the eye range of the vehicle, a reflection mirror should be placed as high as possible above the instrument panel so that it is not directly visible to the driver. Therefore, even if the reflection mirror is enlarged in order to enlarge the display, it is possible to avoid the gap in the instrument panel from being reduced and interfering with the contents. Therefore, it is possible to contribute to further miniaturization of the vehicle display device without reducing the reflecting mirror.

  Hereinafter, an embodiment of a display device for a vehicle according to the present invention will be described with reference to the drawings of FIGS. In addition, the same code | symbol is attached | subjected to the part which is the same as that of what was demonstrated in the prior art, or the detailed description is abbreviate | omitted.

  FIG. 1 is a perspective view of a display device for a vehicle according to the present invention, FIG. 2 is a diagram for explaining the operation of a reflecting mirror and a stopper in FIG. 1, and FIG. 3 is not used when the display device for a vehicle is used. It is a figure for demonstrating the state of the reflective mirror at the time of use, Fig.4 (a) is a relationship between the eye range of a vehicle and a lower limit line, (b) is for demonstrating the relationship between a lower limit line and a reflective mirror, respectively. FIG.

  As shown in FIGS. 1 and 2, the display device 10 for a vehicle according to the present invention has a display source 5 disposed at the center of a case body 11 having an opening at the top, and the reflection mirror 4 is disposed to face the display source 5. It is arranged. A cover 41 is attached to the upper surface of the reflection mirror 4 (opposite side of the reflection surface 4a), and a pair of extending from the attachment surface of the reflection mirror 4 of the cover 41 (reflection surface side of the reflection mirror 4). The leg portion 42 is provided so as to be rotatable with respect to the rotation shaft 6.

  In the best mode, the case where the mirror unit is configured as the mirror unit having the reflecting mirror 4, the cover 41, and the leg portion 42 will be described. However, the present invention is not limited to this, and for example, the configuration of the mirror unit is described. For example, the cover 41 may be removed and the legs 42 may be directly attached to the reflection mirror 4.

  Further, a U-shaped frame (corresponding to a base member) 7 is fixed to the rotating shaft 6 so as to be rotated (moved) together with the rotating shaft 6. When the contact is made with the frame stopper 13 provided on the rotating mirror 6, the rotation of the rotating shaft 6 in the opening direction Y of the reflecting mirror 4 is prevented. Thus, the rotation range in the opening direction of the rotation shaft 6 and the U-shaped frame 7 is defined by the frame stopper 13. Further, the U-shaped frame 7 is configured to rotate the leg portion 42 of the mirror unit according to the rotation through an urging member 8 described later.

  A gear 121 is fixed to the end of one rotating shaft 6, and the output of the motor 122 is transmitted to the gear 121 via the gear group 123. Then, the driving of the motor 123 is controlled by a control unit (not shown), and the rotation shaft 6 is rotated in a direction corresponding to the output of the motor 123. Thus, in this best mode, in order to explain the case of the reflection mirror 4 provided so as to be able to stand up and tilt with respect to the instrument panel of the vehicle, the reflection mirror 4 having the gear 121, the motor 122, and the gear group 123 is opened and closed. Although the mechanism 12 is provided, when the reflection mirror 4 does not need to be opened and closed, the opening and closing mechanism 12 is deleted from the configuration.

  Further, a stopper mechanism (corresponding to an adjusting means) 14 for defining the reflection angle, position, etc. of the reflection mirror 4 is provided in the case body 11 on the other rotating shaft 6 side. As shown in FIG. 3, the stopper mechanism 14 has a predetermined reflecting mirror 4 that moves together with the U-shaped frame 7 in accordance with the movement of the U-shaped frame 7 in the opening direction Y (standing position). A stopper 141 is provided that contacts the U-shaped frame 7 to prevent the reflection mirror 4 from moving when the reflection angle is reached.

  The stopper mechanism 14 further includes a stopper motor 142 that moves the stopper 141 in the closing direction X or the opening direction Y in FIG. 3, and a conversion gear 143 that transmits the output of the stopper motor 142 to the stopper 141. The output of the stopper motor 142 by the control unit (not shown) is converted by the conversion gear 143 into the closing direction X or the opening direction Y and transmitted to the stopper 141, and the stopper 141 moves in the closing direction X or the opening direction Y.

  Also, a biasing member (equivalent to a biasing means) 8 such as a tension spring that always biases the reflecting mirror 4 in the opening direction Y is provided between the U-shaped frame 7 and the leg portion 42 of the reflecting mirror 4. Provided. By this urging member 8, the stopper mechanism 14 has a structure in which only the mirror unit such as the reflection mirror 4 can be adjusted without being affected by the operation of the U-shaped frame 7. Further, since the mirror unit can be pressed against the rotating shaft 6 by the urging member 8, it is possible to prevent the rattling from being caused by the vibration of the vehicle.

  When the stopper 141 moves in the closing direction X, the reflection mirror 4 rotates in the closing direction X with the rotation shaft 4 as the rotation center. When the stopper 141 is moved in the opening direction Y, the reflecting mirror 4 is moved in the opening direction Y around the rotation shaft 4 by the urging force of the urging member 8. As described above, the rotation (movement) range of the reflection mirror 4 corresponds to the movement range of the stopper 141.

  As shown in FIGS. 3 and 4, the vehicular display device 10 stands up (see FIG. 1 (a)) and tilts (see FIG. 1) with respect to an instrument panel (hereinafter also referred to as instrument panel) 1 of the vehicle. (Refer to (b)) The virtual image of the image projected on the projection area E of the windshield 3 of the vehicle by reflecting the image displayed on the display source 5 on the reflection mirror 4 that can be provided and the eyepoint of the vehicle The foreground of the vehicle to be visually recognized through the windshield 3 from IU, IM, and IL is superimposed and visually recognized.

  The tilted U-shaped frame 7 moves together with the reflecting mirror 4 that is pivotally supported. When the reflecting mirror 4 moves to a position of a predetermined reflection angle, the stopper 141 comes into contact with the reflecting mirror. Therefore, the movement of the reflection mirror 4 is prevented. At this time, when the U-shaped frame 7 is not in the standing state, the U-shaped frame 7 continues to move until it is in the standing state, and the reflection angle of the reflecting mirror 4 rotates with respect to the base member. Is retained. When the reflection angle of the reflection mirror 4 is adjusted, the stopper 141 in contact with the reflection mirror 4 is moved by the stopper mechanism 14 and the adjustment is performed.

  The eye range IR is a range that ensures that a virtual image of the projection area E can be seen even if the driver's eye point moves, and is determined corresponding to the vehicle. The eye range IR has eye points IU and IL corresponding to the upper and lower limits thereof, and an eye point IM located at the center thereof.

  A lower limit line (instrument panel upper surface tangent) L that passes through the upper limit of the eye point IU corresponding to the upper limit of the eye range IR and is in contact with the surface of the instrument panel 1 is set. The upper side of the lower limit line L corresponds to a viewable area E1 that can be directly recognized from the eye range (driver) IR, and the lower side of the lower limit line L corresponds to an invisible area E2 that cannot be directly viewed from the eye range IR. And set it.

  As shown in FIGS. 3 and 4B, the reflecting mirror 4a in the tilted state is located below the lower limit line L, and therefore the reflecting mirror 4a cannot be visually recognized from the eye range IR. Then, the cover 41 provided on the back surface functions as a lid of the opening 1 a of the instrument panel 1 to close the opening 1 a when the vehicle display device 10 is not used, and the reflection mirror 4 is accommodated in the instrument panel 1. It will be in the state.

  In response to the start of use of the vehicular display device 10, the reflecting mirror 4 b in the standing state has its upper edge in contact with the lower limit line L, and the rear cover 41 enters the visible area E 1 beyond the lower limit line L. Therefore, the upper edge portion of the cover 41 constituting the mirror unit is temporarily visually recognized from the eye range IR.

  When the vehicle display device 10 is moved by the U-shaped frame 7 to a position corresponding to a predetermined reflection angle, the upright reflecting mirror 4c and the cover 41 are located below the lower limit line L. The mirror unit having the reflection mirror 4a cannot be visually recognized from the eye range IR.

  The range of movement of the stopper 141 by the stopper mechanism 14 is set in a range where the upper edge of the reflection mirror 4 and the cover 41 do not exceed the lower limit line L, thereby defining the adjustment range of the reflection angle of the reflection mirror 4. Yes.

  The range of movement of the U-shaped frame 7 is set so that the movement path of the reflection mirror 4 becomes such a shape, and the U-shaped frame 7 so that at least the upper edge of the reflection mirror 4 protrudes outside the instrument panel 1. 7, and the stopper 141 prevents the movement of the reflection mirror 4 at a position where it is not visually recognized from the eye range IR of the vehicle by the instrument panel 1. Can be disposed above the instrument panel 1, so that even if the reflection mirror 4 is enlarged in order to enlarge the display, it is possible to avoid the gap in the instrument panel 1 from being reduced and interfering with its contents. . Therefore, it is possible to contribute to miniaturization of the vehicle display device 10 without reducing the reflecting mirror 4.

  Next, an example of the operation (action) related to the reflection mirror 4 in the vehicle display device having the above-described configuration will be described below.

  The vehicular display device 10 is rotated in the opening direction Y in accordance with the driving by the opening / closing mechanism 12 and abuts against the frame stopper 13 to stand. At this time, the reflecting mirror 4 rotated together with the U-shaped frame 7 is stopped when the cover 41 comes into contact with the stopper 141 of the stopper mechanism 14 as shown in FIG. It has moved to the position which becomes a predetermined angle in the invisible area E2 below the line L.

  Then, as shown in FIG. 4A, in the state where the reflection mirror 4 of the vehicle display device 10 is set to correspond to the eye point IM, the driver changes to correspond to the center of the eye range IR. When the eye point IM is changed from the eye point IM to the eye point IU corresponding to the upper limit, the stopper 141 of the stopper mechanism 14 is moved in the closing direction X by operating a switch corresponding to the closing direction X of the operation panel (not shown). Thus, the reflection mirror 4 is rotated (moved) about the rotation axis 6 in the closing direction X. When the reflection mirror 4 is moved to a position corresponding to the reflection angle corresponding to the eye point IU and the distortion of the virtual image projected on the projection area E is suppressed, the driver stops the switch operation at that time. Thus, the angle adjustment of the reflection mirror 4 is completed.

  As described above, according to the vehicle display device of the present invention, the reflecting mirror 4 is pivotally supported by the U-shaped frame (base member) 7, and the U-shaped frame 7 is supported by the reflecting mirror 4. At the same time, a stopper 141 is provided to prevent the movement of the reflecting mirror 4 at a position of a predetermined reflection angle when moving toward the standing state, and the U-shaped frame 7 is supported by this stopper 141. Since the reflection angle is adjusted by turning the mirror 4, the influence of the drive mechanism that operates the U-shaped frame 7 is not affected when the angle of the reflection mirror 4 is adjusted. The adjustment mechanism can be simplified. In addition, it is not necessary to form the stopper mechanism 14 having the stopper 141 for adjusting the angle of the reflection mirror 4 integrally with the U-shaped frame 7, and it is formed as a mirror unit including only the reflection mirror 4 and the U-shaped frame 7. This makes it possible to reduce the weight and simplification of the mirror unit because the mechanism part other than the opening / closing mechanism 12 for moving the U-shaped frame 7 and the stopper mechanism 14 for moving the stopper is not necessary. Therefore, it is possible to easily adjust the angle of the reflecting member 4 and contribute to downsizing.

  Further, since the reflecting mirror 4 is urged in the moving direction to the standing state by the urging member (biasing means) 8 and the reflection angle of the reflecting mirror 4 is adjusted using this urging force, Since the reflecting mirror 4 can be moved only by the stopper mechanism 14 that moves the stopper, the apparatus configuration can be further simplified. Therefore, it is possible to contribute to further downsizing of the vehicle display device 10.

  In the above-described best mode, the vehicle display device in which at least the upper edge portion of the reflection mirror 4 protrudes outside the instrument panel 1 has been described. However, the present invention is not limited to this, and the reflection mirror 4 is not limited to this. Even if it is configured as the vehicle display device 10 that does not protrude outside the instrument panel 1, a mechanism unit other than the opening / closing mechanism 12 that moves the U-shaped frame 7 and the stopper mechanism 14 that moves the stopper 141 becomes unnecessary. Since the mirror unit can be reduced in weight and simplified, the angle adjustment of the reflecting member 4 can be easily performed, which contributes to downsizing.

  In the above-described best mode, the case where the stopper motor 142 is used as the adjusting means has been described. However, the present invention is not limited to this, and only the adjustment dial and the transmission mechanism are used without using the motor. Various forms such as a configuration can be adopted.

It is a perspective view of the display apparatus for vehicles of the present invention. It is a figure for demonstrating operation | movement of the reflective mirror and stopper in FIG. It is a figure for demonstrating the state of the reflective mirror at the time of use of the display apparatus for vehicles at the time of non-use. (A) is a figure for demonstrating the relationship between the eye range of a vehicle, and a lower limit line, respectively, (b) is a figure for demonstrating the relationship between a lower limit line and a reflective mirror, respectively. It is a figure for demonstrating the problem in the case of using the angle adjustment of the conventional reflection member.

Explanation of symbols

4 Reflecting mirror 5 Display source 6 Rotating shaft 7 U-shaped frame (base member)
8 Biasing member (Biasing means)
DESCRIPTION OF SYMBOLS 10 Display apparatus for vehicles 14 Stopper mechanism (adjustment means)
141 Stopper

Claims (2)

The virtual image of the image projected on the projection area of the windshield of the vehicle by reflecting the image displayed on the display source on the reflection mirror provided so as to be able to stand and tilt with respect to the instrument panel of the vehicle, and the vehicle In the vehicular display device that superimposes and visually recognizes the foreground of the vehicle through the windshield from an eye point,
A cover comprising a mounting surface for mounting the reflection mirror and a pair of legs extending from the mounting surface;
A pivot shaft for pivotally supporting the pair of leg portions of the cover;
Wherein while being fixed to the rotating shaft so as to rotate with the rotation axis, the reflection mirror in the case body of the vehicle display device to rotate the ranging tilted state from the upright state with the cover the A base member separate from the cover ;
A frame stopper provided in the case main body for defining a rotation range in the opening direction of the rotation shaft and the base member;
When the reflection mirror that rotates together with the base member according to the movement of the reflection mirror to the standing state reaches a preset reflection angle, the reflection mirror contacts the cover, and the cover opens together with the base member. A stopper to prevent rotation in the direction ,
An adjustment means for adjusting the reflection angle of the reflection mirror by moving the stopper in contact with the cover in a state where the base member and the frame stopper are in contact with each other;
A biasing means that is provided between the cover and the base member and constantly biases the cover in the moving direction of the reflection mirror to the standing state;
A vehicle display device comprising: The rotating shaft pivotally supports the cover so that at least the upper edge of the reflecting mirror protrudes outside the instrument panel,
The rotation of the cover is prevented so that the stopper has a reflection angle of the reflection mirror at which the reflection mirror is not visually recognized from the eye range by the instrument panel. The vehicle display device described.

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