JP6741466B2 - Head up display device - Google Patents

Description

The present invention relates to a head-up display device that uses a display member such as a combiner to display vehicle information, navigation information, and the like for a driver, and more particularly to a tilt mechanism that can adjust the angle of the display member in a protruding state. Is.

Conventionally, the combiner and the light emitting unit are housed inside the dashboard, and when the combiner is projected from the top surface of the dashboard when in use, the combiner and the light emitting unit illuminate the display light from the light emitting unit, thereby Also known is a head-up display device (hereinafter referred to as a HUD device) configured to display a virtual image on a combiner arranged on the driver side.

In this type of HUD device, as disclosed in Patent Document 1, an opening that allows the combiner to be taken in and out is provided on the upper surface of a casing that houses the combiner and the light emitting unit, and the combiner is opened using a drive mechanism. There is proposed a tilt mechanism that allows the angle of the combiner to be adjusted in accordance with the driver's viewpoint height in a state in which the combiner is protruded from the tilt mechanism.

FIG. 9 is an explanatory view showing a main part of the HUD device described in Patent Document 1 described above. This HUD device has a housing 100 having an opening 100a on its upper surface, a holder 102 for holding a combiner 101, and a housing. A first connecting portion 103, which is swingably supported by the body 100 and whose tip side is rotatably connected to a holder 102 via a first shaft stopper Q, and a tip side, which is swingably supported by the housing 100, are provided. A second connecting portion 104 that is rotatably connected to the holder 102 via a second shaft stopper portion R, and an elastic member that urges the second connecting portion 104 in a clockwise direction in the drawing around a swing fulcrum S. 105 and a driving member 106 movable along a guide portion 100b provided in the housing 100, and a cam surface is formed in a portion of the first connecting portion 103 facing the driving member 106. ..

In the HUD device roughly configured as described above, the combiner 101 can be moved between the storage position and the protruding position by the four-joint link mechanism, and the four-joint link mechanism includes the first connecting portion 103 and the second connecting portion. The node connecting the swing fulcrums P and S of the part 104 is configured to function as a fixed node, the first connecting part 103 functions as a driving node, the second connecting part 104 functions as a driven node, and the holder 102 functions as an intermediate node. Then, as shown in FIG. 9A, when the combiner 101 is stopped at the storage position inside the housing 100, the driving member 106 is located at a position close to the swing fulcrum P of the first connecting portion 103 on the cam surface. And the elastic member 105 is in the most extended state.

In this state, when a motor (not shown) is started in one direction and the drive member 106 moves diagonally leftward in the figure along the guide portion 100b, the drive member 106 swings on the cam surface of the first connecting portion 103. Since the elastic member 105, which has been extended the most at the storage position, contracts as it moves away from the fulcrum P, the second connecting portion 104 rotates about the swing fulcrum S in the clockwise direction in the figure, and accordingly. The combiner 101 begins to project upward from the opening 100a. When the driving member 106 moves to the vicinity of the center of the cam surface of the first connecting portion 103 in this way, as shown in FIG. 9B, the combiner 101 is in a protruding state in which most of the combiner 101 protrudes from the opening 100a. ..

Then, when the angle of the combiner 101 in the protruding state is adjusted, when the drive member 106 further moves in the diagonal left direction while continuing the rotation of the motor in the same direction, the drive member 106 and the first connecting portion 103 are accordingly accompanied. Since the contact position of the cam surface with the cam surface moves to the left from the position shown in FIG. 9(b), the combiner 101 moves upward and only a small angle in the direction of arrow A as shown in FIG. 9(c). Rotate. Further, when the standing angle of the combiner 101 is returned from FIG. 9(c) to FIG. 9(b), when the drive member 106 moves diagonally rightward by rotating the motor in the opposite direction, the combiner 101 moves downward. While moving, it rotates in the direction opposite to the arrow A by a small angle, and thus the angle of the combiner 101 in the protruding state can be finely adjusted.

JP, 2013-203376, A

However, in the HUD device described in Patent Document 1, since the angle of the combiner 101 is adjusted according to the position of the drive member 106 that abuts on the cam surface of the first connecting portion 103, the combiner 101 is in a protruding state. When adjusting the angle of a certain combiner 101, not only the angle of the combiner 101 but also the position in the up-down direction changes, and the tilting operation for adjusting the angle of the combiner 101 to the driver's viewpoint height becomes complicated. There was a problem.

The present invention has been made in view of the circumstances of the prior art as described above, and an object thereof is to provide a head-up display device capable of adjusting the angle of a display member in a protruding state without changing the vertical position. is there.

In order to achieve the above-mentioned object, a head-up display device of the present invention includes a case main body having an opening on an upper surface thereof, a storage position inside the case main body, and a protruding position protruding upward from the opening. A movable display member, a holder integrated with the lower end of the display member, and a base that is integral with the case body so as to be swingable, and the tip side of the holder is the first shaft stopper. A first swing lever that is rotatably connected via a second swing lever that is swingably supported on the base and that is rotatably connected to the holding body at the tip end side via a second shaft stopper. A rotation permitting means for permitting a relative angular change between the holding body and the first swing lever when the first shaft stopper is in a fixed state, and a rotational driving force applied to the first swing lever. A drive unit, the drive unit applies a rotational drive force to the first swing lever to move the display member to the projecting position, and then maintains the first swing lever in an immovable state. It is characterized in that a rotational driving force can be applied to the holding body.

In the head-up display device configured as described above, when a rotational driving force is applied from the drive member to the first swing lever, the first swing lever is the drive joint, the second swing lever is the follower joint, and the holding body is the intermediate joint. The display member can be moved between the housed position and the projected position by the four-bar link mechanism in which the node that connects the swing fulcrums of the first and second swing levers is a fixed node. Further, when the drive member applies the rotational driving force to the holding body while keeping the first swing lever in the immobile state when the display member is in the protruding position, the holding body is connected to the first swing lever. It is possible to rotate around a certain first shaft stopper, and accordingly adjust the angle of the display member without changing the vertical position.

In the above-mentioned structure, the rotation permitting means includes the elongated hole provided in the second swing lever, the slider having the second shaft stopper and movable in the elongated hole, and the slider in the longitudinal direction of the elongated hole. It is preferable to use a spring that elastically biases the one end so that the rotation allowing means can be compactly incorporated in the second swing lever.

Further, in the above structure, the drive means is composed of a drive member that moves along the moving direction of the holding body, and the guide pin provided on the first swing lever is slidable in the cam hole provided on the drive member. While being inserted, the cam hole has a parallel portion that extends parallel to the moving direction of the drive member, and the guide pin moves within the parallel portion to drive the first swing lever while maintaining the immovable state. When the member applies the rotational driving force to the holding body, the holding body can be rotated by the overstroke after the driving member rotates the first swing lever.

According to the head-up display device of the present invention, the angle of the protruding display member can be adjusted without changing the vertical position.

FIG. 3 is a perspective view of the head-up display device according to the exemplary embodiment of the present invention when not in use. It is a perspective view at the time of use of a head up display device. It is a perspective view showing an internal structure of a head-up display device. It is explanatory drawing which shows the storage state of a combiner. It is explanatory drawing which shows the start-up start state of a combiner. It is explanatory drawing which shows the state in the middle of starting of the combiner. It is explanatory drawing which shows the startup completion state of a combiner. It is explanatory drawing which shows the tilt operation of a combiner. It is operation|movement explanatory drawing of the head-up display apparatus which concerns on a prior art example.

An embodiment of the invention will be described with reference to the drawings. A head-up display device 1 (hereinafter, referred to as a HUD device 1) according to an embodiment of the present invention is arranged on a dashboard in front of a driver's seat in a vehicle compartment. The display device displays vehicle information, navigation information, and the like. In the following description, the Y1-Y2 direction shown by the arrow in FIG. 1 is the front-rear direction, the X1-X2 direction is the left-right direction, and the Z1-Z2 direction is the up-down direction.

The HUD device 1 includes an upper case 4 having first and second openings 2 and 3 on an upper surface, a combiner 5 housed inside the upper case 4 and capable of projecting upward from the first opening 2. 1 The cover 6 that can open and close the opening 2, the drive control mechanism 7 that operates the combiner 5 and the cover 6, and the display light can be emitted to the outside through the second opening 3 that is disposed inside the upper case 4. It is a pop-up type equipped with a light emitting unit (not shown) and the like, in which the combiner 5 is stored inside the upper case 4 when not in use, and the combiner 5 is projected upward from the inside of the upper case 4 when used. is there.

The upper case 4 is combined with a box-shaped base 8 to form a case body 9. The case body 9 is arranged in the recess of the dashboard with the upper surface of the upper case 4 exposed. It has become. In that case, the second opening 3 is arranged so that the first opening 2 faces the front side (front windshield side) when viewed from the driver's seat. The first opening 2 is provided on the moving path of the combiner 5, and although not shown, the display light emitted from the light emitting unit of the light emitting unit is projected inside the second opening 3. A reflecting mirror that reflects toward the combiner 5 is installed.

The combiner 5 is a display member including a half mirror or the like, and has a shape in which a rectangular transparent plate is gently curved forward. As shown in FIG. 3, a holding body 10 is fixed to the lower side of the combiner 5, and leg pieces 10 a are projectingly provided at both left and right ends of the holding body 10. These leg pieces 10a are provided with a first shaft stopper 11, a second shaft stopper 12, and a receiving pin 13, of which the first shaft stopper 11 is located on the base end side closest to the combiner 5 and has a second shaft stopper. The stopper 12 is arranged on the tip side farthest from the combiner 5, and the receiving pin 13 is arranged at an intermediate position between the first shaft stopper 11 and the second shaft stopper 12.

The first shaft stopper 11 is a coupling portion between a shaft hole provided in the leg piece 10 a and a first pin provided at one end of the first swing lever 14. The other end of the first swing lever 14 is swingably supported by the base 8 via a support shaft 15, and the first swing lever 14 is provided with a guide pin 14a. The second shaft stopper 12 is a connecting portion between a shaft hole provided in the leg piece 10 a and a second pin provided in the slider 16. The slider 16 is slidably held in a long hole 17a provided at one end of the second swing lever 17, and the other end of the second swing lever 17 is attached to the base 8 via a support shaft 18. It is swingably supported. Both ends of a spring 19 are hooked on the slider 16 and the second swing lever 17, and the pulling force of the spring 19 urges the slider 16 toward one longitudinal end of the elongated hole 17a. Although details will be described later, a long hole 17a provided in these second swing levers 17, a slider 16 having a second shaft stopper (second pin) 12 and movable in the long hole 17a, A spring 19 that elastically biases the slider 16 toward one end of the elongated hole 17a in the longitudinal direction allows a relative angular change between the holding body 10 having the first shaft stop portion 11 as a fixed shaft and the first swing lever 14. The rotation permitting means is configured.

A driving member 20 (driving means) is supported on the left and right side surfaces of the base 8 so as to be movable in the front-rear direction along the movement direction of the holder 10. One driving member 20 is shown in FIG. Although not shown, the drive member 20 is formed with a first cam hole 21, a second cam hole 22, and a third guide hole 23. The first cam hole 21 includes a lower-stage parallel portion 21a extending along the moving direction of the drive member 20, an inclined portion 21b extending obliquely upward from the rear end side of the lower-stage parallel portion 21a, and a rear end of the inclined portion 21b. And a guide pin 14a of the first swing lever 14 is movably inserted into the first cam hole 21. The upper pin parallel portion 21c extends from the side along the moving direction of the drive member 20.

Therefore, when the drive member 20 moves in the front-rear direction, the guide pin 14a slides between the lower parallel portion 21a of the first cam hole 21 and the inclined portion 21b, so that the first swing lever 14 is pivoted. Since the second swing lever 17 rotates integrally with the holding body 10 around the support shaft 18 around the support shaft 18, the combiner 5 held by the holding body 10 is moved inside the case body 9. And the outside of the first opening 2 can be moved. However, when the guide pin 14a slides in the upper parallel portion 21c of the first cam hole 21 as the drive member 20 moves, the heights of the guide pin 14a and the support shaft 15 do not change, so The swing lever 14 is maintained in an immovable state without rotating.

The guide pin 24a of the link arm 24 is movably inserted into the second cam hole 22 of the drive member 20, and the guide pin 25 protruding from the base 8 is movably inserted into the third cam hole 23. Has been done. The link arm 24 is swingably supported by the base 8 via a support shaft 26, and the link arm 24 has a long hole 24b. A guide pin 6a of the cover 6 is movably inserted into the elongated hole 24b, and the cover 6 is swingably supported by the base 8 via a support shaft 27. Therefore, when the drive member 20 moves in the front-rear direction, the guide pin 24a slides in the second cam hole 22, whereby the link arm 24 rotates about the support shaft 26, and the cover 6 is supported accordingly. The first opening 2 is opened and closed by rotating about the shaft 27.

A rack 20a is formed on the lower surface of the drive member 20, and a gear 28 is meshed with the rack 20a, as shown in FIG. The gears 28 are fixed to both ends of a synchronous shaft 29 extending in the left-right direction of the base 8, and when the synchronous shaft 29 is rotated by using a motor 30 arranged on the inner bottom of the base 8 as a drive source, a pair of left and right drive shafts are driven. The member 20 is adapted to move in the front-rear direction.

Further, a pressing protrusion 20b extending obliquely is formed on the upper part of the driving member 20, and the driving member 20 is further moved (overstroke) after the start-up operation of the combiner 5 is completed, although the details will be described later. And the guide pin 14a slides in the upper-stage parallel portion 21c of the first cam hole 21, the first swing lever 14 is kept stationary during this period, and the pressing projection 20b is received by the receiving pin of the leg piece 10a. The combiner 5 can be tilted by abutting against 13 and rotating the holding body 10. The motor 30, the gear 28, the drive member 20, the link arm 24, the first and second swing levers 14 and 17, the holder 10 and the like constitute a drive control mechanism 7 that operates the combiner 5 and the cover 6. There is.

Next, the start-up operation of the combiner 5 in the HUD device 1 configured as described above will be described with reference to FIGS. 4 to 7.

FIG. 4 shows a non-use state of the HUD device 1. In this non-use state, the first opening 2 provided on the upper surface of the upper case 4 is closed by the cover 6, and the combiner 5 is the case body 9 It is held in the storage position inside. In this case, the drive member 20 is stopped at the leftward retracted forward position in the figure, the guide pin 14a of the first swing lever 14 engages with the lower parallel part 21a of the first cam hole 21, and the link arm 24 The guide pin 24a of is engaged with the right end portion of the second cam hole 22 in the drawing.

When the motor 30 is rotationally driven in one of the forward and reverse directions in this state, the rotation of the motor 30 is transmitted to the gear 28 via the synchronous shaft 29, so that the drive member 20 moves from the retracted position to the advanced position in the figure. Start moving to the right (direction of arrow A). As a result, as shown in FIG. 5, the guide pin 24a of the link arm 24 moves over the inclined portion of the second cam hole 22 and shifts to the upper straight portion, so that the link arm 24 is centered on the support shaft 26. The cover 6 rotates in the clockwise direction, and the cover 6 rotates in the counterclockwise direction about the support shaft 27 accordingly to open the first opening 2.

When the drive member 20 starts moving toward the forward position in this way, the guide pin 14a of the first swing lever 14 moves from the lower parallel part 21a of the first cam hole 21 to the inclined part 21b. The first swing lever 14 rotates counterclockwise about the support shaft 15 to rotate the holding body 10 in the same direction. As a result, the second swing lever 17 connected to the holding body 10 via the second shaft stopper 12 also rotates counterclockwise about the support shaft 18, and the combiner 5 supported by the holding body 10 is at the storage position. Starts to rise toward the first opening 2. At that time, the second shaft stopper (second pin) 12 provided on the slider 16 is pressed against the one end in the longitudinal direction of the elongated hole 17a by the tensile force of the spring 19, and the second shaft stopper 12 is rotated. The intersection angle between the leg piece 10a of the holding body 10 and the second swing lever 17 changes as the center of movement.

When the drive member 20 continues to move toward the forward position, the guide pin 14a of the first swing lever 14 moves in the inclined portion 21b of the first cam hole 21 as shown in FIG. The swing lever 14 further rotates counterclockwise around the support shaft 15, and accordingly, the combiner 5 starts to project above the upper case 4 from the first opening 2. Then, as shown in FIG. 7, when the guide pin 14 a of the first swing lever 14 crosses the inclined portion 21 b of the first cam hole 21 and reaches the upper-stage side parallel portion 21 c, the combiner 5 is removed from the first opening 2. By moving to the most protruding position and stopping the motor 30 at this point, the start-up operation of the combiner 5 is completed.

As described above, in the HUD device 1 according to the present embodiment, the first swing lever 14 that rotates by receiving the driving force from the drive member 20 serves as a drive joint, the second swing lever 17 serves as a follower joint, and the holder 10 is an intermediate joint, and the combiner 5 is connected to the storage position and the projecting position by a four-joint link mechanism in which a joint connecting the support shafts 15 and 18, which are swing fulcrums of the first and second swing levers 14 and 17, is a fixed joint. Can be moved between. Further, the HUD device 1 is provided with a tilt function capable of adjusting the direction of the combiner 5 that has moved to the protruding position. Hereinafter, such tilt operation will be described with reference to FIG. 8.

After the start-up operation of the combiner 5 is completed, when the drive member 20 is further moved (overstroke) from the forward movement position shown in FIG. 7 to the right side in the drawing, as shown in FIG. 8, the guide pin of the first swing lever 14 is moved. Since 14a moves in the upper-stage parallel portion 21c of the first cam hole 21, the first swing lever 14 does not rotate and remains stationary, but the pressing protrusion 20b of the drive member 20 is attached to the receiving pin 13. Since it abuts and presses this, a rotational driving force in the counterclockwise direction in the figure is applied from the drive member 20 to the holding body 10. As a result, the holding body 10 and the combiner 5 rotate counterclockwise around the first shaft stopper 11, and the second shaft stopper 12 and the slider 16 correspondingly move against the tensile force of the spring 19 to form the elongated hole. 17a is moved to the other end side in the longitudinal direction, and the second swing lever 17 rotates clockwise about the support shaft 18.

That is, the crossing angle between the holding body 10 which is an intermediate joint and the first swing lever 14 which is a driving joint is allowed by the above-mentioned rotation permitting means, and the holding body 10 and the second swing lever 17 which is a driven joint. Since the crossing angle is also allowed by the rotation allowing means, the holding body 10 is centered around the first shaft stop portion 11 that is a connecting portion with the first swing lever 14 while keeping the first swing lever 14 in an immovable state. It can be rotated, and accordingly, the angle of the combiner 5 can be adjusted without changing the vertical position. When the angle of the combiner 5 is returned, when the drive member 20 is moved from the position shown in FIG. 8 to the left in the figure, the pressing protrusion 20b moves in the direction away from the receiving pin 13, and the pulling force of the spring 19 causes the first protrusion 20b to move. Since the biaxial stop portion 12 and the slider 16 move to one end side in the longitudinal direction of the elongated hole 17a, the holder 10 and the combiner 5 rotate clockwise around the first axial stop portion 11.

Further, when the combiner 5 that has been started up is retracted into the storage position inside the case body 9, the drive member 20 is moved from the forward position shown in FIG. 7 by rotating the motor 30 in the opposite direction. It may be moved to the retracted position shown in.

As described above, in the HUD device 1 according to the present embodiment example, when the rotational driving force is applied from the driving member 20 to the first swing lever 14, the first swing lever 14 is driven and the second swing lever 17 is driven. The combiner 5 is housed by a 4-joint link mechanism in which the driven joint is a driven joint, the holding body 10 is an intermediate joint, and the joint connecting the support shafts 15 and 18, which are swing fulcrums of the first and second swing levers 14 and 17, is a fixed joint. It can be moved between the position and the protruding position. Further, when the combiner 5 is in the projecting position and the rotational driving force is applied from the drive member 20 to the holding body 10 while maintaining the first swing lever 14 in the immovable state, the driving force is applied to the holding body 10 which is an intermediate node. The crossing angle with the first swing lever 14, which is a joint, is allowed by the rotation permitting means, and the crossing angle with the second swing lever 17, which is the driven joint, is also allowed by the rotation permitting means. The body 10 rotates about the first shaft stopper 11 that is a connecting portion with the first swing lever 14, and accordingly, the angle of the combiner 5 can be adjusted without changing the vertical position.

Further, in the HUD device 1 according to the present embodiment example, the rotation permitting means described above moves in the long hole 17a having the long hole 17a provided in the second swing lever 17 and the second shaft stopper 12. Since the slider 16 and the spring 19 that elastically biases the slider 16 toward one end of the elongated hole 17a in the longitudinal direction, the component of the rotation permitting means is compactly incorporated in the second swing lever 17. be able to.

Further, in the HUD device 1 according to the present embodiment example, the guide pin 14a provided in the first swing lever 14 is slidably inserted in the first cam hole 21 provided in the drive member 20, and The first cam hole 21 has an inclined portion 21b that applies a rotational driving force to the first swing lever 14, and an upper step side parallel portion 21c that extends along the moving direction of the drive member 20, and the guide pin 14a is By moving the upper-stage parallel portion 21c, the driving member 20 is configured to apply the rotational driving force to the holding body 10 while maintaining the first swing lever 14 in the immovable state. The holding body 10 can be rotated by the overstroke after the 1-swing lever 14 is rotated.

In the embodiment described above, the elongated hole 17a provided in the second swing lever 17, the slider 16 having the second shaft stopper 12 and movable in the elongated hole 17a, and the slider 16 are elongated holes. Although the rotation permitting means constituted by the spring 19 which elastically biases one end of 17a in the longitudinal direction is used, the rotation permitting means is constituted by using a cam or the like for performing the rotary movement instead of the slider for performing the linear movement. It is also possible to do so.

1 HUD device (head-up display device)
2 1st opening 3 2nd opening 4 Upper case 5 Combiner (display member)
6 Cover 7 Drive Control Mechanism 8 Base 9 Case Main Body 10 Holder 10a Leg Piece 11 First Shaft Stopper 12 Second Shaft Stopper 13 Receiving Pin 14 First Swing Lever 14a Guide Pin 15 Spindle 16 Slider 17 Second Swing Lever 17a Long hole 18 Spindle 19 Spring 20 Drive member 20a Rack 20b Pressing projection 21 First cam hole 21a Lower parallel part 21b Inclined part 21c Upper parallel part 22 Second cam 23 Third cam 24 Link arm 24a Guide pin 25 Guide pin 28 Gear 29 Synchronous shaft 30 Motor

Claims (2)

A case body having an opening on its upper surface, a display member movable between a storage position inside the case body and a projecting position projecting upward from the opening, and a display member integrated with the lower end portion of the display member. A holder, a first swing lever swingably supported by a base integrated with the case body, and a tip end side of which is rotatably connected to the holder via a first shaft stopper, and the base. A second swing lever rotatably supported by the second swing lever rotatably connected to the holder through a second shaft stopper and the holder when the first shaft stopper is in a fixed state. A rotation permitting means for permitting a relative angle change of the first swing lever, and a driving means for applying a rotation driving force to the first swing lever,
The drive means applies a rotational drive force to the first swing lever to move the display member to the projecting position, and then applies a rotational drive force to the holding body while maintaining the first swing lever in a stationary state. Can be given ,
The drive means comprises a drive member that moves along the movement direction of the holding body, and a guide pin provided on the first swing lever is slidably inserted into a cam hole provided on the drive member. In addition, the cam hole has a parallel portion extending parallel to the moving direction of the drive member, and the guide pin moves in the parallel portion to keep the first swing lever in an immovable state. A head-up display device, wherein the drive member applies a rotational drive force to the holder . 2. The rotation permitting means according to claim 1, wherein the rotation permitting means includes an elongated hole provided in the second swing lever, a slider having the second shaft stopper and movable in the elongated hole, and the slider. A head-up display device comprising a spring that elastically biases one end of the elongated hole in the longitudinal direction.