JP6061525B2 - Vehicle display device - Google Patents

Description

  The present invention relates to a vehicle display device that is attached to an instrument panel or the like of an automobile and displays vehicle information, navigation information, and the like.

  Many vehicle display devices have been proposed that allow a vehicle occupant to view various information such as navigation information superimposed on the outside scene (see, for example, Patent Document 1).

  The vehicle display device includes a reflection mirror that reflects display light emitted from the display, and includes a reflection unit that is supported in an openable / closable state, a first drive unit that opens / closes the reflection unit, and a reflection unit that is predetermined. The second drive means that adjusts the angle in a state of being opened to the angular position, and a housing that supports the reflecting member in a rotatable state. In use, this vehicle display device opens the reflecting means to a predetermined angle by the first driving means, and in this state, drives the second driving means to adjust the angle of the reflecting means.

JP 2005-153723 A

  However, the above-described conventional vehicle display device has two drives: a first driving unit that opens and closes the reflecting unit, and a second driving unit that adjusts the angle while the reflecting unit is opened to a predetermined angular position. Because of having the means, there was a problem that the apparatus itself was increased in size and cost.

  An object of the present invention is to provide a display image corresponding to a difference in viewpoint in the height direction of a driver while reducing the size and cost of the device.

In order to achieve the above object, a first aspect of the present invention provides a base that is attached to a vehicle, a reflector that can protrude upward from the base and that can be immersed in the base, and a display on the reflector. A vehicle display device comprising: a projecting unit that projects an image; and a driving unit that is provided on the base and drives the reflecting plate to project and retract. The vehicle display device holds the reflecting plate and is connected to the driving unit A holding member that is linearly driven, a guide means that is provided across the base and the holding member and guides the projecting and retracting movement of the reflecting plate, and a protruding position where the reflecting plate protrudes from the base. Angle adjusting means for adjusting the angle of the reflecting plate, and the guide means is provided on the base and extends in the moving direction of the reflecting plate, and the holding member. Provided in the first Is configured to have a second guided portion to be guided to the first guided portion and the second guide portion is guided by the guide portion, wherein the angle adjustment means protruding direction side of the first guide portion A first contact portion that is provided at an end of the second guide portion and contacts the first guided portion; and a second contact portion that is provided at an end portion of the second guide portion on the protruding direction side and contacts the second guided portion. A first abutting portion, the first abutting portion and the second abutting portion are spaced apart from each other in a direction intersecting a moving direction of the reflector, and the second abutting portion is The angle adjustment is supported by the base so that a contact point between the second contact portion and the second guided portion is movable along a circumferential direction around the first guided portion. The means further includes a guide roller rotatably supported by the holding member, and an abutting member provided on the base. And an inclined surface corresponding to an angle adjustment range of the reflecting plate is provided so as to approach the base as it moves in a protruding movement direction of the reflecting plate, and the first guided portion is provided with the first guided portion. With the portion in contact, the guide roller moves from one end to the other end in the moving direction of the reflecting plate on the inclined surface, so that the range from the one end to the other end of the inclined surface is within a certain range. Thus, the vehicle display device is characterized in that the angle of the reflector is adjusted .

  According to a second aspect of the present invention, in the first aspect of the invention, the second contact portion urges the second guided portion in a direction intersecting a moving direction of the reflector. It is characterized by being elastically supported by the base.

According to a third aspect of the present invention, in the first or second aspect of the present invention, the first guide portion is constituted by a guide groove provided along a moving direction of the reflector, and the second guide The portion is a rack having a plurality of teeth, the first guided portion is configured by a pin that protrudes from the holding member and is guided by the guide groove, and the second guided portion is A gear having a tooth that is rotatably supported by the holding member and meshes with the rack; and the first contact portion is an end portion of the guide groove capable of receiving and contacting the pin; The second contact portion is a guide rack having teeth meshing with the gear and supported movably with respect to the base.

According to the first aspect of the present invention, when the driving means is driven, the first guided portion is guided to the first guiding portion, the second guided portion is guided to the second guiding portion, and the reflection is performed. The plate protrudes upward from the base, the first guided portion comes into contact with the first contact portion, the reflecting plate is positioned at the protruding position, and in this state, the driving means further drives, The guided portion abuts on the second abutting portion and moves along the circumferential direction of the first guided portion around the first guided portion, thereby changing the angle of the reflecting plate. As described above, since the angle of the reflecting plate is changed, the reflecting plate can be moved and adjusted and the angle can be adjusted without providing a new driving unit different from the driving unit for moving the reflecting plate. Therefore, it is possible to provide a display image corresponding to a difference in viewpoint in the height direction of the driver by changing the angle of the reflecting plate while reducing the size and cost of the device.
Further, when the reflecting plate is positioned at the protruding position, the driving means further drives, so that the second guided portion comes into contact with the second contacting portion and the first guided portion is centered on the first guided portion. Since the guide roller rotates along the inclined surface of the contact member and the guide plate rotates along the inclined surface of the contact member, the reflective plate rotates by the moving distance that the guide roller moves on the inclined surface. Can be regulated within a certain range. Further, when the separation distance between the first contact portion and the second contact portion is larger than the separation distance between the guide roller and the first contact portion, the force applied to the second guided portion is the guide roller. Therefore, the second guided portion can be moved with a small force, so that the driving force of the driving means can be set small and the angle adjustment accuracy can be improved.

  According to the second aspect of the present invention, the second contact portion is elastically supported by the base so as to urge the second guided portion in a direction intersecting the moving direction of the reflector. When the second guided portion is urged by the second contact portion, the first guided portion that is in contact with the first contact portion is further pressed against the first contact portion. Visibility due to vehicle vibrations can be prevented and visibility can be ensured.

  According to the third aspect of the present invention, the second guided portion comes into contact with the second contact portion by further driving the drive means in a state where the reflecting plate is positioned at the protruding position. As the guide roller moves along the inclined surface of the abutting member and moves along the circumferential direction of the first guided portion with the guided portion as the center, the moving distance of the guide roller moving along the inclined surface is as follows. Since the reflecting plate rotates, the angle of the reflecting plate can be regulated within a certain range. Further, when the separation distance between the first contact portion and the second contact portion is larger than the separation distance between the guide roller and the first contact portion, the force applied to the second guided portion is the guide roller. Therefore, the second guided portion can be moved with a small force, so that the driving force of the driving means can be set small and the angle adjustment accuracy can be improved.

According to the third aspect of the present invention, the second guide portion is a rack having a plurality of teeth, and the second guided portion has teeth that are rotatably supported by the holding member and mesh with the rack. Since the gear has the second gear, the second guided portion can move reliably without slipping, and the gear can rotate reliably by the number of rotations corresponding to the driving of the driving means. In addition, the angle of the reflector can be changed with high accuracy.

It is sectional drawing which shows the interior of the vehicle provided with the display apparatus for vehicles concerning one embodiment of this invention, and is a figure which shows a use condition in the display apparatus for vehicles. It is sectional drawing which shows the non-use state of the display apparatus for vehicles shown by FIG. It is a perspective view which shows the display apparatus for vehicles shown by FIG. It is the figure which abbreviate | omitted the reflecting plate of the display apparatus for vehicles shown by FIG. It is a perspective view which shows the guide means and angle adjustment means of the display apparatus for vehicles shown by FIG. It is a figure which shows typically operation | movement of the guide means and angle adjustment means which were shown by FIG. It is a figure which shows typically operation | movement of the angle control means of the display apparatus for vehicles shown by FIG. It is a figure for demonstrating the effect of this invention.

  Hereinafter, an embodiment of a display device for a vehicle (hereinafter referred to as a HUD device) according to the present invention will be described with reference to FIGS.

  The vehicle is provided with a front window shield W in front of the vehicle in the cabin, and an instrument panel P is provided below the front window shield W.

  The instrument panel P (hereinafter referred to as instrument panel) is configured using a black synthetic resin or the like, and is provided with the HUD device 1 and various operation switches (not shown). The upper surface of the instrument panel P is frosted, and as shown in FIG. 1, an opening a through which the reflector 3 of the HUD device 1 is inserted is provided in the front surface of the driver seat. It has been.

  The HUD device 1 displays display images such as vehicle information and navigation information. As shown in FIGS. 1 and 2, the HUD device 1 is provided so as to be able to protrude from the base 2 attached to the automobile (vehicle) and the base 2 (that is, the upper surface of the instrument panel P) and to be immersed in the base 2. Reflector 3, projection means 4 for projecting a display image on reflector 3, lid 5 covering the front of reflecting plate 3 that is immersed in base 2, and the orientation of reflector 3 in the protruding direction A posture maintaining mechanism 6 that maintains the posture so as to follow, and a driving means 7 that drives the reflector 3 to project and retract are provided. Further, the HUD device 1 of the present invention is provided such that the angle of the reflecting plate 3 can be adjusted by rotating the reflecting plate 3 by the guide means and the angle adjusting means provided in the posture maintaining mechanism 6.

  Here, the projecting and retracting direction is the vertical direction of the vehicle, that is, the direction of gravity, as shown in FIG. 1 and 2 indicate the front-rear direction of the vehicle, and the arrow X illustrated in FIG. 3 and the like indicates the direction intersecting the arrows Y and Z and the left-right direction of the vehicle.

  As shown in FIG. 3, the base 2 has a rectangular plate-shaped substrate 20, a pair of plate attachment portions 21 for attaching each of a pair of plates 8 (described later), and a pair of attachments for attaching the lid 5. And a lid mounting piece 22. The substrate 20 is arranged such that its longitudinal direction is along the vertical direction (arrow Z direction) and its thickness direction is along the front-rear direction (arrow Y direction). The pair of plate mounting portions 21 are erected in a plate shape from both edges in the width direction of the substrate 20 toward the front side. That is, the pair of plate attachment portions 21 are provided to face in the left-right direction (arrow X direction).

  As shown in FIG. 3, the pair of lid attachment pieces 22 are located at the upper end portion of the substrate 20 and are provided facing the outside of the pair of plate attachment portions 21. An arm portion 51 of the lid 5 is pivotally supported on the lid attachment piece 22 so as to be rotatable.

  As shown in FIG. 3, the reflector 3 includes a combiner 30 and a substantially rectangular parallelepiped holding member 31 provided at the lower end of the combiner 30. The combiner 30 is a known half mirror having a plate glass (not shown) and a light semi-transmissive film (not shown) such as tin or silver deposited on one surface of the plate glass. The combiner 30 has semi-transparency, and is formed so that the driver can visually observe the front of the vehicle through the combiner 30. The reflector 3 is provided so as to be movable between a protruding position protruding from the base 2 and an immersion position immersed in the base 2.

  The projection unit 4 is a known liquid crystal projector that projects light through a liquid crystal panel. As shown in FIG. 1 and the like, the projection means 4 receives a control signal from a control board (not shown), thereby displaying characters, figures, etc. according to the control signal on a liquid crystal panel composed of a plurality of liquid crystal cells. An image is formed, and this display image is illuminated from the back by a backlight, thereby irradiating display light L corresponding to the display image.

  As shown in FIGS. 1 and 2, the lid 5 has a lid body 50 formed to cover the opening a of the instrument panel P, and an L-shape that extends toward the base 2 and is pivotally supported by the base 2. The arm portion 51 is configured. The lid 5 is supported by the lid mounting piece 22 and the tip of the arm 51 is supported by the plate 8 (which will be described later). Moved.

  As shown in FIG. 5, the posture maintaining mechanism 6 is provided on the pair of plates 8 attached to each of the pair of plate attaching portions 21 of the base 2 and the holding member 31, and holds the holding member 31 with respect to the plate 8. A moving mechanism 10 that slides in the vertical direction, a pair of abutting members 11A that are provided on the base 2 and abut on a guide roller 16 (described later) of the moving mechanism 10, and a plate 8 that is provided on the base 2 And a pair of leaf springs 12 (shown in FIG. 4) for urging each guide roller 16 downward (that is, the contact member 11A).

  As shown in FIGS. 3 and 4, the pair of plates 8 are each attached to the inner surface of each plate attachment portion 21 such that each plan view is formed in a rectangular shape and the longitudinal direction thereof is along the vertical direction. Yes. Each plate 8 has a stepped portion where the rear side (the substrate 20 side in the arrow Y direction) is thicker than the front side. Each plate 8 includes a rail 80 formed through the plate 8 in the vertical direction, and a guide groove 81 (first guide portion) formed along the rail 80 on the side of the rail 80 away from the substrate 20. A rack 82 (second guide portion) formed along the rail 80 on the substrate 20 side of the rail 80, and a roller receiving portion 83 provided along the rail 80 between the rail 80 and the rack 82 (FIG. 5). Are provided). The guide groove 81 has a width dimension (in the arrow Y direction) that is substantially equal to an outer diameter dimension of a guide pin 13 (described later) that is a first guided portion. The rack 82 is configured by cutting a plurality of teeth 80a on the end surface of the step portion (a surface parallel to the inner surface of the substrate 20).

  Further, as shown in FIG. 5, each plate 8 has two members, a plate body 8A formed in a U shape and fixed to the plate 8, and a U-shaped end member 8B attached to the plate body 8A. It consists of The plate body 8A is provided on the lower end side, and the end member 8B is provided on the upper end side with respect to the plate body 8A. By attaching the end member 8B to the plate body 8A, the above-described rail 80, rack 82, guide groove 81, and roller receiving portion 83 are formed.

  The end member 8 </ b> B is made of synthetic resin, and the end member 8 </ b> B is provided with a rail 80, a rack 82, a guide groove 81, and a part on the upper side of the roller receiving portion 83. That is, as shown in FIG. 6A, the upper end portion 81a (first contact portion) of the guide groove 81 is provided on the end member 8B. Hereinafter, a part of the rack 82 and a portion provided on the end member 8 </ b> B of the rack 82 will be referred to as a guide rack 9. Further, the end member 8B is shaped so that both end portions thereof are in the front-rear direction and downward (immersion direction side), one end portion on the rear side (the side away from the substrate 20) of the plate body 8A, and the guide rack 9 One end of the rear side is fixed, and the other end of the front side (substrate 20 side) is formed to extend toward the other end of the plate main body 8A in a cantilevered manner. That is, the end member 8B is provided so that the guide rack 9 can be elastically deformed in the front-rear direction (direction intersecting the rotational direction of the reflecting plate 3).

  As shown in FIG. 5, the moving mechanism 10 is rotatably supported by a guide pin 13 (first guided portion) that is inserted into the guide groove 81 and slides, and a lower end portion of the holding member 31. A rotating shaft 14 extending in the direction, a gear 15 (second guided portion) having teeth 15a that are fixed to both ends of the rotating shaft 14 so as not to rotate and mesh with teeth 80a of each rack 82, and the rotating shaft 14 An extension portion (not shown) that extends from the rail 80 and slides in the rail 80, a rolling roller (not shown) that is supported by the rotary shaft 14 outside the gear 15 and rolls on the rail 80, and the substrate 20. And a guide roller 16 that is rolled on the inner surface. The guide pin 13 is formed to extend from the holding member 31 in a rod shape in the inner direction (arrow X direction). When the guide pin 13 is positioned at the upper end portion 81 a (first contact portion) of the guide groove 81, the reflecting plate 3 is positioned at the protruding position, and when the guide pin 13 is positioned at the lower end portion of the guide groove 81, reflection is performed. The plate 3 is positioned at the immersion position. The guide roller 16 is rotatably supported by the holding member 31. The guide roller 16 rolls to the upper surface of the contact member 11A (described later), so that the guide roller 16 is spaced a predetermined distance from the substrate 20, that is, the dimension from the substrate 20 to the parallel surface 11a of the contact member 11A (described later). Are only provided at intervals.

  Here, a guide groove 81 (first guide portion) and a rack 82 (second guide portion) provided in the plate 8, a guide pin 13 (first guided portion) provided in the moving mechanism 10, and The gear (second guided portion) corresponds to “guide means” recited in the claims.

  Further, as shown in FIG. 6A, when the holding member 31 is attached to the base 2 and the reflecting plate 3 moves in and out (up and down), the gear 15 is provided below the guide pin 13, The guide roller 16 is provided below the gear 15. The guide pin 13 and the gear 15, and the guide pin 13 and the guide roller 16 are provided along a direction that intersects the rotating direction of the reflecting plate 3. Further, the separation dimension L1 between the guide pin 13 and the center part of the gear 15 is set smaller than the separation dimension L2 between the guide pin 13 and the center part of the guide roller 16.

  The pair of contact members 11 </ b> A is made of an elastic member, and is provided on the upper side of the substrate 20 and at both ends in the left-right direction. Each contact member 11A is provided with a parallel surface 11a parallel to the substrate 20 and an inclined surface 11b formed continuously with the parallel surface 11a. The inclined surface 11b is formed so as to protrude in a direction away from the substrate 20 from one end connected to the substrate 20 toward the other lower end. As shown in FIG. 7, the dimension between one end and the other end of the inclined surface 11 b and the inclination angle of the inclined surface 11 b with respect to the substrate 20 correspond to the angle adjustment range of the reflecting plate 3.

  Further, the moving mechanism 10 is made of an elastic member, and is provided with a pair of contact members 11B at the lower end of the substrate 20 and at both ends in the left-right direction. The dimension from the substrate 20 to the parallel surface 11a of each contact member 11B is formed to be substantially equal to the dimension from the substrate 20 to the parallel surface 11a of each contact member 11A, and the reflecting plate 3 moves in a projecting and retracting manner (up and down movement). ), The guide roller 16 rolls on the parallel surface 11a.

  As shown in FIG. 4 and the like, the driving unit 7 rotates (rotates) the female screw portion 71 provided at the lower end portion of the holding member 31, the feed screw 72 screwed into the female screw portion 71, and the feed screw 72. The motor 73 and a rod-shaped guide 74 that guides the holding member 31 in the vertical direction are configured. The female screw portion 71 is formed so that its inner surface penetrates in the arrow Z direction. The feed screw 72 is composed of a screw shaft having a male screw cut on its outer surface. The feed screw 72 is provided along the vertical direction (arrow Z direction) along the surface of the substrate 20 of the base 2, and one end in the longitudinal direction thereof is non-rotatably supported by the output shaft of the motor 73, The other end is rotatably supported by the holding member 31. The guide 74 is provided in parallel with the feed screw. In such a driving means 7, the feed screw 72 is rotated by the rotational drive of the motor 73 in a state where the male screw of the feed screw 72 and the female screw portion 71 are screwed together, and the male screw and the female screw portion 71 of the feed screw 72 are relatively The reflector 3 is moved in the vertical direction (arrow Z direction) with the rotation.

  Next, the operation of the HUD device 1 from the housed state to the used state will be described with reference to FIG. As shown in FIG. 6A, in the HUD device 1, the motor 73 of the driving means 7 is driven in a state where the reflecting plate 3 is located at the immersion position, the gear 15 is rolled to the rack 82, and the guide pin 13 Is slidably contacted with the guide groove 81, the guide roller 16 is rolled to the parallel surface 11a of the contact member 11A, and the reflecting plate 3 is moved to the protruding direction (upward) side. As the reflecting plate 3 moves, the guide pin 13 comes into contact with the upper end portion 81a of the guide groove 81 and the guide roller 16 comes into contact with the upper end portion of the parallel surface 11a of the contact member 11A as shown in FIG. The gear 15 rides on the guide gear 82A, and the reflecting plate 3 reaches the protruding position. At this time, as shown in FIGS. 1 and 8, the reflector 3 corresponds to the line-of-sight direction of the viewpoint E1 of the driver with a high viewpoint.

  Next, an operation when the angle of the reflecting plate 3 is changed will be described with reference to FIG. As shown in FIG. 7A, when the guide pin 13 is in contact with the upper end portion 81a of the guide groove 81, that is, when the reflecting plate 3 is located at the protruding position, the gear 15 rides on the guide rack 9. Yes. As the motor 73 is further driven, the gear 15 rotates, thereby moving along the circumferential direction around the guide pin 13 while pushing down the guide rack 9. At this time, the guide pin 13 in contact with the upper end portion 81 a of the guide groove 81 is further pressed against the upper end portion 81 a of the guide groove 81 by the elastic restoring force of the guide rack 9. As the motor 73 is further driven, the gear 15 moves. As shown in FIG. 7B, the guide roller 16 rolls on the inclined surface 11b, the reflecting plate 3 rotates, and the upper end of the guide roller 16 serves as a driver. Since it is inclined in the approaching direction, the angle of the reflecting plate 3 is changed to correspond to the line-of-sight direction of the driver's reference viewpoint E2 (shown in FIG. 8). At this time, the leaf spring 12 urges the guide roller 16 toward the contact member 11A, and the contact member 11A itself has elasticity. It is rolled while being pressed against the inclined surface 11b of 11A. As the motor 73 is further driven, the gear 15 moves. As shown in FIG. 7C, the guide roller 16 rolls on the inclined surface 11b, the reflecting plate 3 rotates, and the upper end of the guide roller 16 serves as a driver. Since it further inclines in the approaching direction, the angle of the reflecting plate 3 is changed, so that it can correspond to the line-of-sight direction of the viewpoint E3 (shown in FIG. 8) of the driver with a low viewpoint. Thus, the HUD 1 can provide the display images S1, S2, and S3 corresponding to the difference in the viewpoint in the height direction of the driver by changing the angle of the reflecting plate 3.

  In the above-described embodiment, the guide rack 9 is elastically supported by the base 2. However, the guide rack 9 has a contact point between the guide rack 9 and the gear 15 in the circumferential direction around the guide pin 13. For example, if the guide rack 9 is inclined so as to approach the front side (substrate 20 side) as it goes upward, even if it is fixed to the base 2 so as to be immovable. Good.

  Further, the above-described embodiments are merely representative forms of the present invention, and the present invention is not limited to the embodiments. That is, various modifications can be made without departing from the scope of the present invention.

1 HUD device (vehicle display device)
2 Base 3 Reflecting plate 7 Driving means 9 Guide rack (second contact portion)
13 Guide pin (first guided part)
15 Gear (second guided part)
81 Guide groove (first guide)
81a Upper end portion of guide groove (first contact portion)
82 racks (second guide)
11A Contact member 11b Inclined surface

Claims (3)

A base attached to the vehicle;
A reflector provided so as to be able to protrude upward from the base and to be immersed in the base;
Projecting means for projecting a display image on the reflector;
Drive means provided on the base and driving the reflecting plate to project and retract,
A holding member that holds the reflection plate and is linearly driven by being connected to the driving means;
Guiding means provided across the base and the holding member for guiding the protrusion and subtraction movement of the reflector;
Angle adjusting means for adjusting the angle of the reflecting plate at a protruding position where the reflecting plate protrudes from the base;
The guiding means includes
A first guide part and a second guide part provided on the base and extending in a moving direction of the reflector;
A first guided portion provided on the holding member and guided by the first guiding portion; and a second guided portion guided by the second guiding portion;
It said angle adjustment means,
The provided a first abutting portion abutting against the first guided portion provided in front Symbol ends of the projecting direction of the first guide portion, the end portion of the protruding direction of the second guide portion A second abutting portion that abuts on the second guided portion,
The first contact portion and the second contact portion are provided apart from each other in a direction intersecting a moving direction of the reflector;
The second abutting portion includes the base so that a contact point between the second abutting portion and the second guided portion is movable along a circumferential direction centering on the first guided portion. Supported by
The angle adjusting means further includes a guide roller rotatably supported by the holding member, and a contact member provided on the base,
The abutting member is provided with an inclined surface corresponding to the angle adjustment range of the reflecting plate, being inclined so as to approach the base as it goes in the protruding movement direction of the reflecting plate,
In a state where the first guided portion is in contact with the first contact portion, the guide roller moves from one end to the other end of the inclined surface in the moving direction of the reflecting plate. The vehicle display device , wherein an angle of the reflecting plate is adjusted so that a range from the one end to the other end is within a certain range .   The said 2nd contact part is elastically supported by the said base so that the said 2nd guided part may be urged | biased in the direction which cross | intersects the moving direction of the said reflecting plate. Vehicle display device. The first guide part is constituted by a guide groove provided along the moving direction of the reflector,
The second guide part is a rack having a plurality of teeth,
The first guided portion includes a pin that protrudes from the holding member and is guided by the guide groove,
The second guided portion is a gear having teeth that are rotatably supported by the holding member and mesh with the rack.
The first contact portion is an end portion of the guide groove that can receive and contact the pin,
3. The vehicle display device according to claim 1, wherein the second contact portion is a guide rack having teeth meshing with the gear and supported so as to be movable with respect to the base. 4. .

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