JP2015121632A - Head-up display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combiner head-up display device having a simplified mechanism associated with extension/retraction and display angle adjustment of a combiner.SOLUTION: A head-up display device 1 having a combiner 30 forms a virtual image in front of a driver to be seen and includes; a holder 31 which has the combiner 30 mounted thereon and moves up and down between a retracted position A and display position B through an opening 3; vertical driving means 40 for moving the holder 31 up and down; an upper pin 32a and lower pin 32b located on an upper side and lower side, respectively, of each side face of the holder 31; and a support body 33 having a guide groove 34 for guiding the two pins 32a, 32b located on each side thereof. The support body 33 has, on each side, an angle adjustment section 34a that allows the pin 32b to rotate about the pin 32a, the pin 32a being located at an end of the guide groove 34, to enable adjustment of a display angle of the combiner 30 about the pin 32a.

Description

  The present invention relates to a storage / unfolding of a combiner and a display angle adjustment of the combiner in a combiner-type head-up display device.

A head-up display device is a device that displays information necessary for driving, for example, superimposed on the scenery in front of the vehicle to the driver of the vehicle, for example. I can grasp it.
For example, the head-up display device disclosed in Patent Document 1 has at least a transparent light guide, a combiner provided in the transparent light guide, and light emitting display means for emitting light including information as a display image, A head-up display device in which light from a light emitting display means can be guided to a combiner by a transparent light guide, the transparent light guide is movable, and the combiner displays a dashboard when displaying a display image When expanded, the combiner can be stored in the dashboard. Since the combiner is not provided directly on the windshield, it does not stand out from the inside or outside of the vehicle when information is not displayed, and does not become obstructive, contributing to the improvement of the durability of the combiner itself.
In such a combiner, since it is stored in the dashboard, an opening of the dashboard is necessary, and there is a possibility that dust, dust, moisture, etc. may enter from the opening, and a lid that closes the opening is required. .

A head-up display device having a lid for opening and closing an opening of a dashboard is disclosed in Patent Document 2, and a display source and a magnifying reflector are fixed inside the dashboard, and light is emitted from the display source. An opening is formed on the upper surface of the dashboard to emit the image light of the superimposed image that is displayed and reflected by the magnifying reflector and directed toward the windshield portion in front of the driver's line of sight, and this opening is opened. A lid member is provided.
In the open state in which the opening is opened and closed, the lid member stands up from the peripheral portion from the eye point of the opening and blocks the line of sight from the eye point to the interior of the dashboard through the opening. When the cover is closed, a shielding member that tilts so as to extend along the upper surface of the dashboard and retracts from the line of sight is provided so that the interior of the dashboard does not enter the driver's line of sight from the opening. , Preventing you from getting in the way.

JP-A-8-113059 JP 2002-331855 A

  However, in the head-up display device that moves the combiner described in Patent Document 1 and Patent Document 2 from the storage position of the dashboard to the display position on the dashboard, to adjust the display angle of the combiner after the combiner is deployed Since a separate mechanism is required, there is a problem that the structure becomes complicated and the head-up display device becomes large, so that the ease of assembly into the dashboard is deteriorated.

  In addition, in the case of a head-up display device that moves the combiner described in Patent Document 1 from the dashboard storage position to the display position on the dashboard, the opening of the dashboard for the combiner is opened and closed. When the lid member described in Patent Document 2 is applied to the lid member, the lid member is divided into two parts, and a link mechanism that opens and closes each lid part is provided, and the combiner is moved up and down. Requires a link mechanism that opens and closes the lid and a moving mechanism that moves the combiner up and down, which complicates the structure and increases the size of the head-up display device, resulting in poor assembly in the dashboard. There are problems such as.

  The present invention has been made in view of the above situation, and an object of the present invention is to provide a combiner-type head-up display device that can simplify a mechanism relating to storage / deployment of a combiner and adjustment of a display angle of the combiner.

The head-up display device of the present invention is
A head-up display device that includes a combiner that reflects display light of information to be displayed emitted from a display unit toward the driver side and visually recognizes the virtual image in front of the driver,
A holder to which the combiner is attached and which moves up and down from the storage position to the display position through the opening;
Vertical drive means for raising and lowering the holder;
An upper pin and a lower pin respectively provided on the upper and lower sides of the side surface of the holder;
A support having a guide groove for guiding the upper pin and the lower pin;
With
The guide groove is in a state in which one of the upper pin and the lower pin abuts against an end of the guide groove, and the other pin is centered on the one pin and the one pin and the other pin. Provided with an angle adjustment unit that can rotate on a circular arc with a radius between the pins,
As the combiner is moved up and down by the vertical drive means, the angle adjuster can adjust the angle of the combiner around the one pin.

The head-up display device of the present invention is
The upper pin that moves as the holder moves up and down, or a driven arm that rotates by being pushed by the lower pin,
The driven arm includes a lid that opens and closes the opening.

  ADVANTAGE OF THE INVENTION According to this invention, the mechanism which concerns on storage / deployment of a combiner and the display angle adjustment of a combiner can be simplified.

It is a schematic perspective view in the display position which concerns on one Embodiment of the head-up display apparatus of this invention. It is a schematic side view of the state mounted in the vehicle concerning one embodiment of the present invention. It is a one part schematic perspective view concerning one embodiment of the present invention. It is a side view for demonstrating storage / deployment | deployment of a combiner and the display angle adjustment of a combiner concerning one Embodiment of this invention. (A) is a figure which concerns on the raising / lowering in storing / deployment, (b) is a figure which concerns on the display angle adjustment of a combiner. It is a side surface enlarged view of the guide groove upper end part for the display angle adjustment of the combiner which concerns on one Embodiment of this invention. It is a modification of the groove shape in the guide groove upper end part for the display angle adjustment of the combiner which concerns on one Embodiment of this invention. (A) is Modification 1 and (b) is Modification 2. It is a side view for demonstrating storing / development of the lid concerning one embodiment of the present invention.

A head-up display device according to an embodiment of the present invention will be described below with reference to the accompanying drawings.
The head-up display device 1 according to this embodiment includes a display 10, a plane mirror 20, and a combiner 30 that is a reflector, as shown in FIGS. 1 and 2, for example. The display 10 emits display light related to various types of vehicle information emitted from the display 10 toward the combiner 30 via the plane mirror 20, and the display light reflected by the combiner 30 is visually recognized at the driver's observation position. Various information is recognized together with the background as a virtual image in front of the combiner 30.

  In the head-up display device 1, when various types of vehicle information are displayed, the combiner 30 stored at the storage position A in the dashboard is raised and arranged at the display position (deployment position) B on the dashboard. Thus, when there is no need to display, the combiner 30 is lowered and stored so as not to obstruct the driver.

The display 10 is configured by, for example, a 3.1 inch color TFT (Thin Film Transistor) liquid crystal display (LCD), and irradiates the combiner 30 that is a reflector with display light related to various types of vehicle information. The display device 10 is not limited to a liquid crystal display, and a display device having another configuration such as a laser projector or a CRT (Cathode Ray Tube) may be used.
The combiner 30 is composed of a concave mirror made of polycarbonate (PC), for example, and reflects the display light emitted from the display 10 toward the driver side, and from the driver via the combiner 30. The virtual image is enlarged and displayed far away, and at the same time, the background can be simultaneously seen by the light from the outside that passes through the combiner 30.

  In such a head-up display device 1, the combiner 30 is moved up and down through the opening 3 between the storage position A in the dashboard 2 and the display position B on the dashboard. The lower end portion of the combiner 30 is sandwiched and fixed by a holder 31 that is divided into two parts, front and rear. On both sides of the holder 31, two upper pins 32a and a lower pin 32b are arranged on the upper and lower sides and attached so as to protrude outward.

  A pair of guide plates 33a constituting a support 33 is arranged on both sides of the holder 31, and the lower end of the guide plate 33a is fixed to a horizontal support plate 33b to constitute the support 33.

  The support 33 is made of, for example, a synthetic resin such as polybutylene terephthalate (PBT), and a pair of opposed guide plates 33a constituting the support 33 has guide grooves 34 along the vertical direction. Two pins (an upper pin 32a and a lower pin 32b) are attached to each guide groove 34 so as to protrude outward and can be moved up and down along the guide groove 34. As a result, the combiner 30 supported by the holder 31 can move up and down in a direction along the guide groove 34 by receiving power from a vertical drive mechanism (vertical drive means) 40 described later. The upper pin 32a and the lower pin 32b are made of metal such as stainless steel, for example.

  For example, as shown in FIGS. 1 and 3, the vertical drive mechanism (vertical drive means) 40 has one end 42 a of a first arm 42 attached to a rotating shaft 41 provided on a support plate 33 b, and the first arm 42. The other end portion 42b of the second arm 43 and the other end portion 43b of the second arm 43 are connected by a pin, and the one end portion 43a of the second arm 43 is connected to the holder 31 by a lower pin 32b. The first arm 42, the second arm 43, and the guide groove 34 attached to the rotary shaft 41 constitute a so-called crank mechanism, and the first arm (corresponding to a crank) 42 is rotated via the rotary shaft 41. Thus, the holder 31 can be moved up and down by reciprocating the one end 43a of the second arm 43 along the guide groove 34.

A gear 44 is attached to the rotating shaft 41 and meshes with a worm 46 driven by a DC motor 45, and the DC motor 45 is rotated based on an operation signal from a control means (not shown). Here, the forward and reverse rotations of the DC motor 45 drive the holder 31 up and down to move up and down along the guide groove 34. Thereby, the combiner 30 can be moved up and down between the storage position A in the dashboard 2 and the display position B on the dashboard 2 through the opening 3 of the dashboard 2.
Reference numeral 47 in the figure denotes a stopper, which is moved downward along the same path as the lift by being applied to the second arm 43 so as to smoothly switch from forward rotation to reverse rotation, that is, from rising to lowering. ing.

  Further, as shown in FIG. 4, the guide groove 34 is formed linearly along the vertical direction between the lower end position and the upper end position, and the display angle of the combiner is adjusted at the upper end portion of the guide groove 34. A fan-shaped groove portion (angle adjusting portion) 34a is formed for adjusting the position of the combiner 30 in the height direction and the display angle to regulate the posture.

  In adjusting the position of the combiner 30 in the height direction, specifically, when the combiner 30 is raised from the storage position A to the display position B, the lower pin 32b of the holder 31 as shown in FIG. The direction V42 of the force applied to the first arm 42 due to the rotation of the linear motor 45 from the state where is located at the lower end of the guide groove 34 to the state where the upper pin 32a of the holder 31 is located at the upper end of the guide groove 34 is The combiner 30 can be raised by being regulated by the groove 34 in the direction V32b of the force applied to the lower pin 32b.

  Further, in adjusting the display angle of the combiner 30, the linear motor 45 is again moved from the state where the upper pin 32 a of the holder 31 is positioned at the upper end of the guide groove 34 (display position B) as shown in FIG. When the direction V42 of the force related to the first arm 42 is generated by the rotation, the upper pin 32a abuts against the upper end portion of the guide groove 34. Therefore, the direction V32b of the force applied to the lower pin 32b becomes a fan-shaped groove (angle). The adjustment unit) 34a guides the lower pin to rotate about the upper pin 32a, and the display angle of the combiner 30 can be moved from the angle indicated by the solid line to the angle indicated by the imaginary line.

Next, the shape requirements of the guide groove 34 for adjusting the display angle of the combiner 30 of the head-up display device 1 in the present embodiment will be described with reference to FIG.
Will be described.

In order to adjust the display angle of the combiner 30 of the head-up display device 1 in the present embodiment, the guide groove 34 has an upper pin 32a in contact with the upper end of the guide groove 34 as shown in FIG. On a circular arc arc of a circle C having a center point P32a of 32a as a center O and a radius r between the upper pin 32 and the lower pin 32b (between the center point P32a of the upper pin 32a and the center point P32b of the lower pin 32b). An angle adjusting groove that allows the lower pin 32b to be rotated may be provided.
A specific shape of the angle adjusting groove is, for example, a fan-shaped groove shape such as a fan-shaped groove portion 34a as shown in FIG.

As another modification, a groove shape branched from the guide groove 34 such as the branch groove portion 34b as shown in FIG.
Further, as shown in FIG. 6B, when the upper pin 32a is in contact with the upper end of the guide groove 34, a fan-shaped groove portion 34a for allowing the lower pin 32b to rotate around the upper pin 32a is provided. The locking portion 34c may be provided so that the upper pin 32a is not guided by the fan-shaped groove 34a.

At the storage position A in the dashboard 2 of the combiner 30, the opening 3 of the dashboard 2 remains open, so that a lid 50 is provided to open and close in conjunction with the raising and lowering of the holder 31. It is like that.
The lid 50 has a lid 51 having a size capable of closing the opening 3 corresponding to the size of the opening 3 of the dashboard 2, and both sides of the holder 31 provided on both ends of the lid 51. And a driven arm 52 that is rotated following the two pairs of pins 32a and 32b provided on the base plate, and is made of synthetic resin such as ABS resin (Acrylonitrile Butadiene Styrene Copolymer).

  The follower arm 52 includes an open / close arm portion 52a whose lower end portion is rotatably attached to the guide plate 33a, and an opening maintaining arm portion 52b linked to the open / close arm portion 52a.

As shown by a solid line in FIG. 7, the open / close arm portion 52a has the two pins 32a and 32b of the holder 31 positioned at the lower end of the guide groove 34, and the surface of the upper pin 32a and the lower surface of the open / close arm portion 52a are in contact with each other. Thus, the lid 51 is arranged so as to close the opening 3.
Further, as indicated by an imaginary line in FIG. 7, the upper surface of the upper pin 32 a of the holder 31 is pushed up the lower surface of the open / close arm portion 52 a as the upper pin 32 a is raised by the vertical drive mechanism (vertical drive means) 40. Thus, the center of rotation and the arm length of the open / close arm 52a are set so that the lid 51 can be in the opened state retracted from the opening 3.
Therefore, the lid 51 is opened and closed in the rotation range between the state indicated by the solid line in FIG. 7 and the state indicated by the imaginary line in FIG.
In addition, you may comprise not the upper side pin 32a but the lower side pin 32b which contacts the lower end of the opening-and-closing arm part 52a, and pushes up.

As shown in FIG. 7, the opening maintaining arm portion 52 b that is continuous with the upper end of the opening / closing arm 52 a has substantially vertical information from the opening / closing arm portion 52 a at the position rotated to the opening state of the lid portion 51 that is retracted from the opening portion 3. It is provided to extend.
Thereby, while the upper pin 32a of the holder 31 is raised while being in contact with the substantially vertical surface of the opening maintaining arm portion 52b, the open state of the lid portion 51 is maintained without changing the angle of the open / close arm portion 52a. Thus, the lid 50 is prevented from contacting when the combiner 30 is raised or lowered.

As a mechanism for opening and closing the lid 50 in conjunction with raising and lowering of the combiner 30, for example, a driven arm 52 in which a tension coil spring 53 is provided between the opening and closing arm portion 52 a and the guide plate 33 a of the support 33 is used. 31 is provided with an urging means for urging the upper pin 32 a toward the closing side of the lid 50, so that the movement of the upper pin 32 a can be reliably transmitted to the driven arm 52.
The tension coil spring (biasing means) 53 constantly applies a force stably in the closing direction of the lid 50, so that the lid 51 is retracted from the opening 3 as the upper pin 32 a of the holder 31 is raised. The movement to the state and the movement to the closed state in which the lid 51 closes the opening 3 with the lowering of the upper pin 32a of the holder 31 can be realized stably.
The biasing means is not limited to the tension coil spring 53, and may be biased by attaching a spiral spring to the center of rotation of the driven arm 52, or may be constituted by other biasing means.

In this way, the operation of the two pins 32a and 32b of the holder 31 on which the combiner 30 that moves in the guide groove 34 is supported by the vertical drive mechanism 40 is used to raise and lower (store / deploy) the combiner 30. The structure concerning the opening / closing of the accompanying lid 50 and the adjustment of the display angle of the combiner 30 can be simplified and made compact.
Thereby, the assembly | attachment property in the dashboard 2 of a head-up display apparatus can be improved.

  In the head-up display device 1 according to the embodiment, the up-and-down drive of the combiner 30 is configured by the vertical drive mechanism using the DC motor 45, the gear 44, and the worm 46. Other vertical drive mechanisms such as those configured can also be used.

  In the above-described embodiment, the upper pin (one pin) 32a is placed on the upper end of the guide groove 34 while the upper pin (one pin) 32a is in contact with the upper pin (one pin) 32a. Although the structure which provides the guide groove 34a which can be rotated in the center was shown, it is not limited thereto, and the lower pin (one pin) 32b is abutted against the lower end of the guide groove 34 when the combiner 30 is stored. In order to store the combiner 30 in the storage position B at an appropriate angle as a configuration in which an angle adjustment unit is provided that allows the upper pin (the other pin) 32a to be rotated around the lower pin (the one pin) 32b. It can also be used for angle adjustment.

  In the above-described embodiment, the head-up display device mounted on the vehicle has been described as an example. However, the present invention is not limited to the vehicle, and can be mounted and used on other vehicles such as a ship and an aircraft.

DESCRIPTION OF SYMBOLS 1 Head up display apparatus 2 Dashboard 3 Opening part 4 Windshield 10 Display 20 Plane mirror 30 Combiner 31 Holder 32a Upper side pin 32b Lower side pin 33 Support body 33a Guide plate 33b Support plate 34 Guide groove 34a Fan-shaped groove part (Angle adjustment part)
34b Branch groove part (angle adjustment part)
34c Locking part 40 Vertical drive mechanism (vertical drive means)
41 Rotating shaft 42 First arm 42a First arm one end 42b First arm other end 43 Second arm 43a Second arm one end 43b Second arm other end 44 Gear 45 DC motor 46 Worm 47 Stopper 50 Lid 51 Lid 52 Follower Arm 52a Opening / Closing Arm 52b Opening Maintenance Arm 53 Pulling Coil Spring (Biasing Unit)
A Storage position B Display position (deployment position)

Claims (2)

A head-up display device that includes a combiner that reflects display light of information to be displayed emitted from a display unit toward the driver side and visually recognizes the virtual image in front of the driver,
A holder to which the combiner is attached and which moves up and down from the storage position to the display position through the opening;
Vertical drive means for raising and lowering the holder;
An upper pin and a lower pin respectively provided on the upper and lower sides of the side surface of the holder;
A support having a guide groove for guiding the upper pin and the lower pin;
With
The guide groove is in a state in which one of the upper pin and the lower pin abuts against an end of the guide groove, and the other pin is centered on the one pin and the one pin and the other pin. Provided with an angle adjustment unit that can rotate on a circular arc with a radius between the pins,
The head-up display device, wherein the angle of the combiner can be adjusted around the one pin by the angle adjusting unit as the combiner is moved up and down by the vertical driving means. The upper pin that moves as the holder moves up and down, or a driven arm that rotates by being pushed by the lower pin,
The head-up display device according to claim 1, wherein the driven arm includes a lid that opens and closes the opening.

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