JP2020019287A - Head-up display device - Google Patents

Abstract

To provide a head-up display device which can achieve down-sizing of the device by restraining shake etc. of a display image due to vibration and so on accompanied with up-sizing of a reflection member.SOLUTION: A HUD device 100 reflects display light representing an image radiated by an indicator with a reflection part 4 and displays a virtual image corresponding to a picture image by the display light reflected by the reflection part 4, and comprises: a reflection part holder 50 which includes a pair of rotary shaft parts 51 which hold the reflection part 4 and simultaneously protrude on both ends; a lever part 55 which protrudes from the reflection part holder 50 to the outside at a central part of a holder width direction along an axis line 51a of the rotary shaft part 51 of the reflection part holder 50; and a drive part 60 which moves the lever part 55 and turns and activates the reflection part holder 50 around the axis line 51a of the rotary shaft part 51 as center. The reflection part 4 is attached to the reflection part holder 50 by positioning center of gravity G on tip side of the lever part 55 rather than the axis line 51a of the rotary shaft part 51.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a head-up display device.

  An image corresponding to the display light is provided to the user by projecting display light from the display onto a windshield or the like of a vehicle through a reflecting member such as a concave mirror. A head-up display (HUD) device for visually recognizing an image as a virtual image together with an outside scene is known.

  In the display device of Patent Document 1, in order to adjust the angle of the reflection member, a pair of rotation shaft portions are provided protruding from both ends of a holding member for holding the reflection member, and the rotation member is rotatably supported about the rotation shaft portion. By moving the hanging part provided on the member via the drive unit, the reflecting member is rotated via the holding member, and the angle can be adjusted. Also, by holding the axis of the rotation shaft of the holding member and the center of gravity of the reflection member as close as possible, a rotation force is hardly generated even when vibration is applied, so that the displayed image is not blurred by resonance. .

JP 2015-102700 A

  In such a head-up display device, the size of the reflecting member is required to enlarge the display area, and when vibration or the like is applied due to the enlargement, a rotational force is easily generated and the problem of blurring the display image is further increased. There is room for improvement. On the other hand, downsizing of the device is also required.

  The present invention has been made in view of the above circumstances, and provides a head-up display device capable of suppressing blurring of a display image due to vibration or the like due to an increase in the size of a reflection member and achieving downsizing of the device. With the goal.

In order to achieve the above object, the head-up display device of the present invention includes:
A head-up display device that reflects display light representing an image emitted by a display unit at a reflection unit and displays a virtual image corresponding to the image by the display light reflected at the reflection unit,
A reflector holder that holds the reflector and has a pair of rotating shafts protruding at both ends,
A lever portion projecting outward from the reflection portion holder at a central portion in the holder width direction along the axis of the rotating shaft portion of the reflection portion holder,
A driving unit that moves the lever unit and rotates the reflection unit holder about an axis of the rotation shaft unit,
The reflector is attached to the reflector holder with its center of gravity positioned on the tip side of the lever portion with respect to the axis of the rotation shaft,
It is characterized by the following.

  ADVANTAGE OF THE INVENTION According to this invention, the blurring of the display image by vibration etc. accompanying the enlargement of a reflective member is suppressed, and downsizing of an apparatus can be achieved.

FIG. 1 is a schematic cross-sectional view for explaining a configuration of a head-up display device according to one embodiment of the present invention. It is a schematic perspective view of the back of a reflector support mechanism and a reflector drive mechanism. FIG. 4 is a schematic perspective view of a side surface of a reflection unit supporting mechanism and a reflection unit driving mechanism. FIG. 7 is a schematic rear view of the reflection section support mechanism. It is a schematic perspective view of a reflection part drive mechanism.

A head-up display device according to one embodiment of the present invention will be described with reference to the drawings.
A head-up display device (hereinafter abbreviated as a HUD device) 100 is mounted on, for example, an automobile, and includes a housing 1, a display device 2, a plane mirror 3, a reflection unit 4, as shown in FIG. , A reflector support mechanism 5, a reflector drive mechanism 6, and a circuit board (not shown). The reflecting section 4 has a reflecting member 40, the reflecting section supporting mechanism 5 has a reflecting section holder 50, and the reflecting section driving mechanism 6 has a driving section 60.

  The HUD device 100 reflects a display light L representing a predetermined image emitted by the display device 2 on the plane mirror 3 and the reflection unit 4 and irradiates the windshield 200 of a vehicle on which the HUD device 100 is mounted with an image. Display the corresponding virtual image. The contents displayed as such a virtual image by the HUD device 100 are various kinds of vehicle information, navigation information, and the like.

  The housing 1 is made of a metal material, and is made of, for example, the same titanium alloy as a reflector holder 50 described later, and includes a display 2, a plane mirror 3, a reflector 4, a reflector support mechanism 5, and a reflector drive mechanism 6. And a circuit board (not shown). An opening 10 that allows the display light L to pass through the windshield 200 is formed in a portion of the housing 1 facing the windshield 200, and the opening 10 is covered with a translucent cover 11.

  The display 2 emits display light L representing an image (display image) for notifying information such as various types of vehicle information, navigation information, and the like. For example, the display 2 includes a liquid crystal panel and a light source for a backlight. And a self-luminous display.

  The plane mirror 3 reflects the display light L emitted from the display 2 toward the reflection unit 4.

The reflection unit 4 has a reflection member 40 that further reflects the display light L reflected by the plane mirror 3 and emits the display light L toward the windshield 200. The reflection member 40 is formed of a concave mirror in which a reflection film is formed on a surface of a base material made of, for example, a synthetic resin material by means such as vapor deposition.
The reflecting member 40 of the concave mirror has, for example, a center of gravity G substantially at the center in the left-right direction (horizontal direction) and substantially at the center in the vertical direction (vertical direction).
The reflection member 40 is attached to the reflection section holder 50 as described later. The reflector holder 50 is supported by the reflector support mechanism 5 so as to be rotatable about the axis 51 a of the horizontal rotating shaft 51, the rotation angle is adjusted by the reflector drive mechanism 6, and the display light L on the windshield 200 is adjusted. Can be changed. The reflecting member 40 is attached to the reflecting unit holder 50 in a state where the center of gravity G is shifted downward (downward in the vertical direction) from the axis 51 a of the rotating shaft 51 of the reflecting unit holder 50. The center of gravity G is determined by the reflection member 40 alone or the reflection member 40 and the reflection portion holder 50.

  The display light L reflected by the reflection member 40 passes through the translucent cover 11 provided in the opening 10 of the housing 1 and goes to the windshield 200. The display light L that reaches the windshield 200 and is reflected forms a virtual image of the display image (a display image visually recognized by the observer E) at a front position F (see FIG. 1) of the windshield 200, and from the front. Of light. Accordingly, the HUD device 100 can allow the observer E (mainly, the driver of the vehicle) to visually recognize both the virtual image and the outside scene that actually exists ahead.

The reflecting portion support mechanism 5 supports the reflecting member 40 of the reflecting portion 4 on the housing 1 so as to be rotatable about the axis 51 a of the rotating shaft portion 51.
In the HUD device 100 of the present invention, the reflecting portion support mechanism 5 holds the reflecting member 40 of the reflecting portion 4 and has a reflecting portion holder 50 having a pair of rotating shaft portions 51 protruding at both ends, and a pair of rotating shaft portions 51. , And a pair of bearing holders 53 that respectively hold the pair of bearings 52 in the housing 1.
That is, in the HUD device 100 of the present invention, the reflecting member 40 constituted by the concave mirror of the reflecting portion 4 moves the center of gravity G to the reflecting portion holder 50 separate from the reflecting member 40 below the axis 51 a of the rotating shaft portion 51. It is staggered and installed. The reflecting member 40 is rotatable about an axis 51a by supporting a pair of rotating shaft portions 51 at both ends of the reflecting portion holder 50 on the housing 1 via bearings 52 and bearing holders 53, respectively.

Further, in the HUD device 100 of the present invention, each bearing holder 53 is provided with a positioning pin 54a serving as a supported portion 54 protruding in the radial direction of the bearing 52, and is provided with a hole-shaped support portion (not shown) of the housing 1 and a length. Each is positioned and attached to the hole-shaped support portion.
As a result, the positioning of the reflecting portion 4 is performed by fitting the cylindrical positioning pin 54a, which becomes the supported portion 54 provided in the radial direction of the bearing 52 of the bearing holder 53, to the perfectly circular hole-shaped supporting portion of the housing 1. At the same time, the bearing holder 53 on the opposite side is inserted into a long hole-shaped support portion along the direction of the axis 51a of the rotating shaft portion 51 so that even if there is a dimensional tolerance or the like in the direction of the axis 51a, the long hole is formed. The positioning can be allowed by the support portion.

  The reflector holder 50 is made of, for example, a die-cast titanium alloy made of the same metal material as the housing 1 to secure rigidity. Fitting holes (not shown) for fitting the rotating shaft portion 51 are formed at both ends in the width direction of the reflecting portion holder 50. In the fitting holes at both ends, rotating shaft portions 51 made of separate metallic materials are arranged on a straight axis 51a and fitted. In addition, the rotating shaft 51 may be formed integrally with the reflector holder 50. The reflector holder 50 is made of the same material as the housing 1, thereby avoiding the effects of thermal expansion, thermal contraction, and the like, and ensuring assembly accuracy. The concave mirror is attached to the support pad 50 (not shown) of the reflective unit holder 50 via a double-sided adhesive tape or the like on a support pad (not shown) provided on the front side according to the curved surface of the concave mirror of the reflective member 40. As a result, the center of gravity G of the reflecting member 40 is shifted downward from the axis 51 a of the rotating shaft portion 51 so that the reflecting surface of the reflecting member 40 is not distorted.

  The rotating shaft portion 51 is formed of the same metal material as the reflecting portion holder 50, another metal material, a resin material, or the like, and is formed of a stepped shaft. The large diameter portion of the rotating shaft portion 51 is press-fitted into the fixing hole of the reflection portion holder 50, and the small diameter portion is press-fitted into the inner ring 52 a of the bearing 52.

  The bearing 52 is configured using a ball bearing as shown in FIG. In the bearing 52, the small diameter portion of the rotating shaft portion 51 is press-fitted into the inner ring 52a, and the outer ring 52b of the bearing 52 is press-fitted into the bearing holder 53. As a result, the reflector holder 50 is fixed to the housing 1 via the bearing holder 53, and the rotating shaft 51 is rotatably supported.

As shown in FIGS. 1 and 2, the reflector driving mechanism 6 is a mechanism for driving the reflector 4 around the axis 51 a of the rotating shaft 51. Is a driving mechanism for adjusting the rotation angle of the reflection member 40 attached to the reflection unit holder 50 and changing the emission angle of the display light L to the windshield 200.
The reflector driving mechanism 6 moves a lever 55 that projects outward from the reflector holder 50 at the center in the holder width direction along the axis 51 a of the rotating shaft 51 of the reflector holder 50, and moves the lever 55 to rotate. A drive unit 60 for rotating the reflection unit holder 50 about the axis 51 a of the shaft unit 51. As shown in FIGS. 2 and 4, the lever portion 55 is formed integrally with the lower portion of the rear surface of the reflection portion holder 50 so as to protrude downward and hang down. The lever portion 55 is sandwiched between the projection 61c of the plate 61a and the leaf spring 61d of the other arm plate 61b from the front and rear. Thus, the drive unit 60 can rotate the reflection unit holder 50 about the axis 51 a of the rotation shaft unit 51 by sliding the arm unit 61.
As shown in FIG. 5, the driving unit 60 includes an arm 61, a slider 62 to which the arm 61 is attached, a guide shaft 63 for guiding the slider 62, a lead screw 64 and a nut 65 for driving the slider 62. And a motor 66 for driving the lead screw 64 to rotate.

The arm portion 61 includes a projection 61c of a pair of arm plates 61a and a leaf spring portion 61d of an arm plate 61b. A pair of arm plates 61a and 61b are provided on a slider 62 so as to face each other. The protruding portion 61c is formed so as to protrude in a hemispherical shape, and the leaf spring portion 61d is formed by bending a plate-like spring material into a substantially right-angled triangular shape facing the protruding portion 61c. The leaf spring portion 61d is attached such that the inclined side faces the protrusion 61c, the vertical side is supported and fixed to the slider 62, and the horizontal side is spaced from the front surface of the slider 62. Thereby, the inclined side of the leaf spring portion 61d can be elastically deformed until the end face of the horizontal side hits the front surface of the slider 62. The lever portion 55 hanging down from the reflection portion holder 50 is sandwiched between the protrusion portion 61c and the leaf spring portion 61d, whereby the lever portion 55 can slide in the vertical direction, and can be slid in the front-rear direction (for the reflection member 40). It is mounted so that it can reciprocate in the sandwiched state (front and back directions).
The slider 62 to which the arm portion 61 is attached is slid in the front-rear direction along the guide shaft 63, and the nut 65 attached to the slider 62 is reciprocated in the front-rear direction by the lead screw 64 driven by the motor 66. .
Thus, by reciprocating the slider 62, the holding state is maintained even if the holding position (the distance (rotation radius) from the center (the axis 51a) of the rotation shaft portion 51) between the projection 61c and the leaf spring portion 61d changes. While holding, the reflection unit holder 50 is driven to rotate about the rotation shaft unit 51 to adjust the rotation angle of the reflection member 40, thereby changing the emission angle of the display light L to the windshield 200.

  The circuit board (not shown) is, for example, a printed circuit board provided at a predetermined position in the housing 1 and mounted with a control unit (not shown) including a microcontroller including a CPU and a storage unit such as a ROM. The control unit of the circuit board is electrically connected to each of the display 2 and the motor 66. The control unit obtains vehicle state information transmitted via a communication line from an external device (not shown) such as a vehicle ECU (Electronic Control Unit), drives the display 2 in response thereto, and causes the display 2 to A predetermined display image (notification image) is displayed. Further, the HUD device 100 is provided with an input unit (not shown) for allowing a user such as the observer E to adjust the angle of the reflection unit 4, and the control unit performs an operation from the user's input unit. The motor 66 is driven according to the content, and the motor 66 is rotated by a predetermined angle. As a result, the reflection unit 4 is driven to rotate about the axis 51 a of the rotation shaft 51. Note that the input unit may be an external device of the HUD device 100 electrically connected to the control unit.

  Next, in the HUD device 100, the reflector holder 50 includes a lever portion 55 that projects outward from below the reflector holder 50 at a central portion in the holder width direction along the axis 51a of the rotating shaft portion 51. The drive section 60 is configured to move the lever section 55 and rotate the reflection section holder 50 about the axis 51 a of the rotating shaft section 51. The reflection member 40 of the reflection unit 4 is attached to the reflection unit holder 50 with the center of gravity G positioned on the distal end side (lower side) of the lever unit 55 with respect to the axis 51 a of the rotation shaft unit 51. That is, the axis 51a of the rotating shaft 51 of the reflection holder 50 and the center of gravity G of the reflection member 40 are set in a state of being shifted. In this state, the reflection member 40 of the reflection unit 4 held by the reflection unit holder 50 is configured such that the distance L2 from the axis 51 a of the rotating shaft 51 to the tip of the lever 55 is shifted from the center of gravity G of the reflection member 40 to the lever 55. Is longer than the distance L1 to the front end of the target.

The reflection unit drive mechanism 6 normally applies a force to the reflection unit holder 50 via the lever unit 55, that is, a driving force by reciprocatingly driving the drive unit 60 to thereby rotate the concave mirror that is the reflection member 40 by the rotation angle. Can be adjusted.
On the other hand, when vibration or impact is applied to the reflecting member 40 constituted by a concave mirror or the reflecting portion holder 50 holding the reflecting member 40, the driving portion 60 is transmitted from the reflecting member 40 or the reflecting portion holder 50 side via the lever portion 55 to the driving portion 60. A torque (moment) is applied. In this case, the force required by the drive unit 60 to suppress the rotational force due to vibration or the like is based on the principle of leverage (M = F × L), and the distance L2 from the axis 51a of the rotary shaft 51 is long. Can be suppressed with a smaller force, and the distance L1 from the center of gravity G to the tip of the lever portion 55 can be reduced as compared with the case where the axis 51a of the rotating shaft 51 and the center of gravity G of the reflecting member 40 match each other. The length of the lever is increased by the distance L2 from the axis 51a of the rotating shaft portion 51 of the reflecting portion holder 50 to the tip of the lever portion 55, and the driving portion 60 suppresses the rotating force due to vibration or the like with a small force (moment). Can be. That is, when the motor 66 of the driving unit 60 is not driven, the motor is supported by the spring force of the leaf spring between the projection 61c sandwiching the lever 55 and the leaf spring 61d. The rotational force caused by the rotation can be suppressed.
Thus, even if the concave mirror constituting the reflecting member 40 is enlarged and the display area is enlarged, the rotational force (moment) generated by vibration, impact, or the like can be supported with a small force, and the resonance performance is improved and the display is improved. Image blurring can be suppressed.
The symbol M used in the equation of the leverage principle represents a moment due to vibration, F represents a load applied by the drive unit, and L2 represents a lever length.

Further, in the HUD device 100, by adjusting the amount of imbalance applied to the drive unit 60, damage due to the load applied to the slider 62 is prevented. That is, the distance from the center of gravity G of the reflecting member 40 to the axis 51 a of the rotating shaft 51 of the reflecting unit holder 50 is set as an unbalance amount: A, and from the axis 51 a of the rotating shaft 51 of the reflecting unit holder 50 to the tip of the lever unit 55. Is set as the lever length: L2, the following relationship is satisfied. Here, the lever length L2 is the same as the distance L2 from the axis 51a to the tip of the lever portion 55 described above.
L2 / A> (6m × K × G × x) / (σ × b × h ² )
Here, m: weight of the reflection member 40, K: amplification factor (constant), G: impact load,
x: height of the slider, σ: tensile strength of the material of the slider, b: width of the slider,
h: thickness of the slider.
By satisfying the relationship between the unbalance amount A and the lever length L2, the rotational force of the driving unit 60 is reduced with respect to the rotational force generated by vibration or impact applied to the reflecting member 40 or the reflecting unit holder 50. The strength of the slider 62 can be ensured, and damage to the slider 62 and the like can be prevented. In addition, a driving unit (reflection unit driving mechanism 6) 60 that can support a rotational force generated by vibration or the like due to the enlargement of the reflection member 40 and can prevent blurring of a displayed image only by securing the lever length L2. Can be configured.

  In the HUD device 100, a rotational force is generated by vibration or impact applied to the reflection member 40 and the reflection unit holder 50, and the rotation force is transmitted to the driving unit 60 via the lever unit 55. In the drive unit 60, the transmitted force is supported by the protrusion 61c of the arm plate 61a provided on the slider 62 and the leaf spring 61d of the arm plate 61b. The rotational force due to the vibration or the like deforms the leaf spring portion 61d. However, when the deformation of the leaf spring portion 61d is large, the leaf spring portion 61d may be deformed beyond its elastic limit, may come off the arm plate 61b, or may come off. Therefore, in order to restrict the deformation of the leaf spring 61d, a plate-like stopper 67 is attached below the protrusion 61c of the arm plate 61a as shown in FIG. This restricts the range of movement of the lever 55 between the protrusion 61c and the leaf spring 61d by the thickness thereof, thereby preventing a large displacement from being applied to the leaf spring 61d and causing the leaf spring 61d to become plastic. It prevents deformation and detachment from the arm plate 61b.

The shape of the stopper 67 is not limited to the case where it is formed and provided in the shape of a rectangular parallelepiped, and may be another shape. For example, it may be a shape of two rectangular parallelepipeds which are formed so as to project obliquely from both sides. good. Further, the stopper 67 may be formed integrally with the arm plate 61a, or may be formed separately and fixed with a screw, a bolt, an adhesive, a fitting structure, or the like.
Further, the stopper 67 is not limited to being provided below the protrusion 61c of the arm plate 61a as in the illustrated example, but may be provided below the leaf spring 61d of the opposing arm plate 61b. Also in this case, the stopper 67 has the same operation and effect. In the case where it is provided below the leaf spring portion 61d of the arm plate 61b, the deformation range of the leaf spring portion 61d can be directly visually confirmed by the thickness of the stopper 67.

As described above in detail with the embodiment, the HUD device 100 reflects the display light L representing the image emitted from the display 2 by the reflection unit 4, and generates the image by the display light L reflected by the reflection unit 4. HUD device 100 for displaying a virtual image corresponding to the above, a reflection unit holder 50 holding a reflection unit 4 and having a pair of rotation shaft portions 51 protruding at both ends, and an axis of the rotation shaft unit 51 of the reflection unit holder 50. A lever 55 projecting outward from the reflector holder 50 at the center in the holder width direction along the holder 51a, and the lever 55 is moved to rotate the reflector holder 50 about the axis 51a of the rotating shaft 51. The reflection unit 4 is attached to the reflection unit holder 50 with the center of gravity G positioned on the tip end side of the lever unit 55 with respect to the axis 51 a of the rotation shaft unit 51.
According to this configuration, when vibration or impact is applied to the reflector 4 or the reflector holder 50 holding the reflector 4, the reflector 4 or the reflector holder 50 rotates to the drive unit 60 via the lever 55. Although a force (moment) is applied, the distance from the center of gravity G to the tip of the lever portion 55 is longer than that in the case where the axis 51a of the rotating shaft portion 51 and the center of gravity G of the reflecting portion 4 are aligned with each other. Since the distance L2 from the axis 51a of the rotating shaft portion 51 of the reflection portion holder 50 to the tip of the lever portion 55 is increased relative to L1, the lever length is correspondingly longer, and the driving portion 60 vibrates with a small force (moment). It is possible to suppress the rotational force due to the above.
This makes it possible to enlarge the concave mirror constituting the reflection section 4 and enlarge the display area to support the rotational force generated by vibration or impact with a small force, thereby improving the resonance performance and reducing the blur of the displayed image. Can be suppressed.
Further, the mounting of the reflector 4 to the reflector holder 50 may be performed in a state where the center of gravity G is shifted, so that the HUD device 100 itself can be prevented from increasing in size and downsized.

In the HUD device 100, the reflector 4 held by the reflector holder 50 sets the distance L 2 from the axis 51 a of the rotating shaft 51 to the tip of the lever 55 from the center of gravity G of the reflector 4 to the tip of the lever 55. Is larger than the distance L1.
According to such a configuration, as the distance L2 is larger than the distance L1, the rotational force generated by vibration, impact, or the like can be supported with a smaller force.
This makes it easy to increase the size of the reflecting section 4 and can reliably suppress blurring of the displayed image with a small force even when the display area is enlarged. Further, the HUD device 100 itself only needs to secure the distance L2, and it is possible to prevent the device itself from increasing in size and to reduce the size.

In the HUD device 100, the rotating shaft 51 is provided separately from the reflector holder 50.
According to such a configuration, they can be manufactured separately, and it is easy to ensure their manufacturing accuracy. In addition, by changing the material of the rotating shaft portion 51 and the material of the reflecting portion holder 50, necessary durability and the like can be secured respectively.

  Note that the present invention is not limited by the above embodiment and drawings. Of course, changes (including deletion of components) can be made to these.

  In the above description, an example has been described in which the display light L from the display device 2 is reflected by the plane mirror 3 and reaches the reflection unit 4, but the present invention is not limited to this. The HUD device 100 may be configured so that the display light L from the display device 2 directly reaches the reflection unit 4 without having the plane mirror 3. In addition, although the example in which the display light L reflected by the reflection unit 4 is projected on the windshield 200 has been described, the invention is not limited thereto. The display light L reflected by the reflection unit 4 may be projected onto a transmission / reflection member (a so-called combiner) dedicated to the HUD device 100. Further, the case where the reflecting portion holder 50 is made of metal has been exemplified, but it may be made of synthetic resin as long as rigidity can be secured.

  In the above description, the HUD device 100 is installed in the vehicle. However, the present invention is not limited to this. The HUD device 100 can also be installed near the driver's seat of other moving objects such as ships and aircraft.

  In the above description, in order to facilitate understanding of the present invention, description of unimportant known technical matters is omitted as appropriate.

100 HUD device (head-up display device)
200 Windshield 1 Housing 10 Opening 11 Translucent cover 2 Display 3 Flat mirror 4 Reflector 40 Reflector 5 Reflector support mechanism 50 Reflector holder 51 Rotating shaft 51a Axis line 52 Bearing 52a Inner ring 52b Outer ring 53 Bearing holder 54 Cover Supporting part 54a Positioning pin 55 Lever part 6 Reflection part driving mechanism 60 Driving part 61 Arm part 61a Arm plate 61b Arm plate 61c Projection part 61d Leaf spring part 62 Slider 63 Guide shaft 64 Lead screw 65 Nut 66 Motor 67 Stopper E Observer F Front position G Center of gravity of reflective member L Display light L1 Distance from center of gravity to lever L2 Distance from axis to lever

Claims (2)

A head-up display device that reflects display light representing an image emitted by a display unit at a reflection unit and displays a virtual image corresponding to the image by the display light reflected at the reflection unit,
A reflector holder that holds the reflector and has a pair of rotating shafts protruding at both ends,
A lever portion projecting outward from the reflection portion holder at a central portion in the holder width direction along the axis of the rotating shaft portion of the reflection portion holder,
A driving unit that moves the lever unit and rotates the reflection unit holder about an axis of the rotation shaft unit,
The reflector is attached to the reflector holder with its center of gravity positioned on the tip side of the lever portion with respect to the axis of the rotation shaft,
A head-up display device characterized by the above-mentioned. The reflector held by the reflector holder has a distance from the axis of the rotation shaft to the tip of the lever greater than the distance from the center of gravity of the reflector to the tip of the lever. ,
The head-up display device according to claim 1, wherein:

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