Head-up display device

Abstract

The present invention provides a head-up display (HUD) device that can reduce wear associated with the rotation of a reflector. The HUD device comprises a display that emits display light expressing an image, a reflector 31 that reflects the display light, a shaft 60 provided in the reflector 31 along an axis AX, and a support 70 that rotatably supports the shaft 60 about the axis AX. The support 70 comprises a contact part 80 that contacts the shaft 60 in the radial direction centered on the axis AX, and an affixing part 90 to which the contact part 80 is affixed. The contact part 80 includes a first plate 81 and a second plate 82 positioned opposite the first plate 81 with the shaft 60 in between. The first plate 81 is elastic and presses the shaft 60 against the second plate 82.

Description

[Technical field]

[0001] The present invention relates to a head-up display device. [Background technology]

[0002] There is known a head-up display (HUD) device that radiates display light showing an image toward a light-transmitting member such as a windshield of a vehicle. For example, Patent Document 1 discloses a conventional HUD device that includes a reflector that reflects the display light, a shaft that is provided on the reflector, a support that rotatably supports the reflector via the shaft, and an elastic member that presses the shaft against the support. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2018-192962 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the configuration described in Patent Document 1, in which the shaft portion is pressed against the support portion by an elastic member, there is a risk that the shaft portion and the support portion will wear out as the reflecting portion rotates, and therefore there is room for improvement.

[0005] The present invention has been made in consideration of the above-mentioned circumstances, and has an object to provide a head-up display device capable of reducing wear caused by rotation of a reflecting portion. [Means for solving the problem]

[0006] In order to achieve the above object, a head-up display device according to the present invention comprises: A display unit that emits display light representing an image; A reflecting portion that reflects the display light; A shaft portion provided on the reflecting portion and extending along an axis line; A support portion that supports the shaft portion rotatably around the axis line, The support portion includes a contact portion that contacts the shaft portion in a radial direction centered on the axis line, and a fixing portion to which the contact portion is fixed, The contact portion has a first plate portion and a second plate portion located on the opposite side of the first plate portion with the shaft portion therebetween, The first plate portion has elasticity and presses the shaft portion toward the second plate portion. death, The first plate portion has a contact surface that contacts the shaft portion in the radial direction, The second plate portion is an opposing portion having an opposing surface that faces the contact surface in the radial direction; a first inclined portion connected to one end of the opposing portion and having a first inclined surface inclined with respect to the opposing surface; a second inclined portion connected to the other end of the opposing portion and having a second inclined surface inclined with respect to the opposing surface, each of the contact surface, the first inclined surface, and the second inclined surface contacts the shaft portion; The first plate portion and the second plate portion are separate bodies, The second plate portion includes a bent portion formed by bending the opposing portion and having a surface perpendicular to the opposing surface, The fixing portion has a press-fit portion into which the bent portion is press-fitted. do. In order to achieve the above object, a head-up display device according to another aspect of the present invention comprises: A display unit that emits display light representing an image; A reflecting portion that reflects the display light; A shaft portion provided on the reflecting portion and extending along an axis line; A support portion that supports the shaft portion rotatably around the axis line, The support portion includes a contact portion that contacts the shaft portion in a radial direction centered on the axis line, and a fixing portion to which the contact portion is fixed, The contact portion has a first plate portion and a second plate portion located on the opposite side of the first plate portion with the shaft portion therebetween, The first plate portion has elasticity and presses the shaft portion toward the second plate portion, the contact portion connects an end of the first plate portion and an end of the second plate portion and has a connecting portion having a bent shape, the fixing portion has an insertion portion into which the connecting portion is inserted, The first plate portion, the second plate portion and the connecting portion are integrally formed. Effect of the Invention

[0007] According to the present invention, it is possible to reduce wear caused by rotation of the reflecting portion. [Brief description of the drawings]

[0008] [Figure 1] 1 is a diagram showing a state in which a head-up display (HUD) device according to a first embodiment of the present invention is mounted on a vehicle. [Diagram 2] FIG. 1 is a schematic configuration diagram of a HUD device according to a first embodiment. [Diagram 3] FIG. 2 is a perspective view of a mirror unit according to the first embodiment. [Figure 4] 4 is a cross-sectional view of a main part of the mirror unit according to the first embodiment taken along line AA in FIG. 3. [Diagram 5] FIG. 2 is an enlarged view of a main part of the mirror unit according to the first embodiment. [Figure 6] FIG. 2 is a perspective view of a contact portion according to the first embodiment. [Figure 7] FIG. 2 is a perspective view of a main part of a fixing part according to the first embodiment. [Figure 8] FIG. 11 is an enlarged view of a main part of a mirror unit according to a second embodiment. [Figure 9] FIG. 11 is a perspective view of a contact portion according to a second embodiment. [Figure 10] FIG. 11 is a perspective view of a main part of a fixing part according to a second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] An embodiment of the present invention will be described with reference to the drawings.

[0010] (First embodiment) A head-up display (HUD) device 100 according to a first embodiment of the present invention is disposed, for example, in a dashboard 2 of a vehicle 1, as shown in FIG. 1. The HUD device 100 emits display light L toward a windshield 3. The display light L reflected by the windshield 3 travels toward a user 4 (mainly the driver of the vehicle 1), causing the user 4 to visually recognize an image represented by the display light L as a virtual image V. The virtual image V is displayed in front of the vehicle 1 through the windshield 3. The virtual image V displays various information related to the vehicle 1 (hereinafter referred to as vehicle information). The vehicle information includes not only information about the vehicle 1 itself, but also information about the outside of the vehicle 1.

[0011] In the following, each configuration may be explained using the left-right, up-down, and front-rear directions of the vehicle 1. In each figure, the X-axis along the left-right direction, the Y-axis along the up-down direction, and the Z-axis along the front-rear direction are shown. In addition, the direction of the arrows indicating each of the X, Y, and Z axes may be called the "+" direction, and the opposite direction may be called the "-" direction.

[0012] 2, the HUD device 100 includes a display unit 10, a folding mirror 20, a mirror unit 30 including a reflecting unit 31, and a housing 40 that houses these components. The HUD device 100 also includes a control unit (not shown).

[0013] The housing 40 is formed in a box shape from, for example, resin or metal. The housing 40 has an opening 40a through which the display light L passes toward the windshield 3 shown in Fig. 1. The opening 40a is covered with a light-transmitting cover 41.

[0014] The display unit 10 displays an image and emits display light L representing the image toward the folding mirror 20 as shown in FIG. 2. The display unit 10 has, for example, an LCD (Liquid Crystal Display) and a backlight that illuminates the LCD from behind. The LCD is, for example, a TFT (Thin Film Transistor) type. The backlight is, for example, composed of an LED (Light Emitting Diode), a light guide member, etc.

[0015] The folding mirror 20 is, for example, a plane mirror, and reflects the display light L emitted by the display unit 10 toward the reflecting unit 31. Note that the folding mirror 20 is not limited to a plane mirror, and may be a free-form mirror. Also, a configuration may be adopted in which the folding mirror 20 is omitted and the display light L emitted by the display unit 10 directly reaches the reflecting unit 31.

[0016] 3, the mirror unit 30 includes a reflecting section 31, a holder 32, a driving section 50 that rotates the reflecting section 31 and the holder 32 about an axis AX, and a supporting section 70 that rotatably supports an axis section 60 provided on the holder 32. For ease of understanding, the axis AX is shown in the figure as being parallel to the X-axis, but the axis AX is not limited to being parallel to the X-axis and may be tilted to some extent with respect to the X-axis.

[0017] The reflecting portion 31 is, for example, a concave mirror, and magnifies the display light L from the folding mirror 20 and reflects it toward the windshield 3. The mirror surface 31a of the concave mirror is set to a concave shape that offsets distortion caused by the curved shape of the windshield 3.

[0018] The holder 32 is made of, for example, resin, and holds the reflecting part 31 from the rear side of the mirror surface 31a. The holder 32 has a shaft part 60 provided at one end (+X side) and a lever 32a provided at the other end (-X side). The lever 32a protrudes generally in the direction in which the mirror surface 31a faces. The holder 32 may be omitted, and the shaft portion 60 may be provided on the reflecting portion 31. Similarly, the lever 32a may be provided on the reflecting portion 31.

[0019] The driving unit 50 includes a motor 51, a transmission unit 52, and a case 53. The motor 51 is, for example, a stepping motor, and is driven by the control of a control unit (not shown). The transmission unit 52 is configured to transmit the rotational power of the motor 51 to the lever 32a. The transmission unit 52 has a plurality of gears interposed between the output shaft of the motor 51 and a gear provided at the tip of the lever 32a. The motor 51 drives the lever 32a to rotate around the axis line AX via the transmission unit 52. As a result, the holder 32 and the reflecting unit 31 rotate around the axis line AX. The case 53 holds the motor 51 and the transmission unit 52, and is fixed to the housing 40. In addition, the case 53 supports the other end (the end on the -X side) of the holder 32 rotatably around the axis line AX at a portion (not shown).

[0020] The shaft portion 60 is formed in a cylindrical shape extending along the axis line AX. The support portion 70 supports the shaft portion 60 so as to be rotatable about the axis line AX. The shaft portion 60 and the support portion 70 will be described in detail later.

[0021] The control unit (not shown) is composed of a microcomputer that controls the overall operation of the HUD device 100, and is mounted on, for example, a printed circuit board housed in a predetermined location of the housing 40. The control unit controls the drive of the motor 51 to rotate the reflecting unit 31 and the holder 32, thereby controlling the display position of the virtual image V in the vertical direction. The control unit also communicates with a system such as an ECU (Electronic Control Unit) that controls each part of the vehicle 1, and causes the display unit 10 to display an image showing vehicle information.

[0022] In the HUD device 100 configured as above, the display light L emitted from the display unit 10 and reflected by the folding mirror 20 and the reflecting unit 31 in this order passes through the cover 41 and is radiated to the outside of the HUD device 100, as shown in Fig. 2. The display light L radiated from the HUD device 100 is reflected by the windshield 3, whereby a virtual image V is displayed, as shown in Fig. 1.

[0023] (Regarding the shaft portion 60 and the support portion 70) From here, the shaft portion 60 and the support portion 70 will be described in detail. As shown in Figs. 3 to 5, the support portion 70 includes a contact portion 80 that contacts the shaft portion 60 in the radial direction centered on the axis line AX, and a fixing portion 90 to which the contact portion 80 is fixed.

[0024] As shown in FIGS. 4 and 5, the contact portion 80 has a first plate portion 81 and a second plate portion 82 located on the opposite side of the first plate portion 81 with the shaft portion 60 interposed therebetween.

[0025] The first plate portion 81 is a leaf spring having elasticity in the Y direction, and is made of, for example, stainless steel. As shown in FIG. 4 and FIG. 5, the first plate portion 81 is located above the shaft portion 60, and its main surface is provided approximately parallel to the XZ plane. The first plate portion 81 is long in the Z direction, and a through hole H1 is formed at one end (+Z side). The first plate portion 81 is fixed to a mounting portion 91 (described later) of the fixing portion 90 by a screw (not shown) inserted into the through hole H1. A hook 81a rising in the +Y direction is formed at the other end (-Z side) of the first plate portion 81. The other end of the first plate portion 81 is hooked to an insertion portion 93a (described later) of the fixing portion 90 by the hook 81a. The lower surface of the portion between the through hole H1 and the hook 81a in the first plate portion 81 is a contact surface 81b that contacts the shaft portion 60 in a radial direction (hereinafter, simply referred to as the "radial direction") centered on the axis AX. The first plate portion 81 presses the shaft portion 60 toward the second plate portion 82 at the contact surface 81b.

[0026] The second plate portion 82 is formed from the same material as the first plate portion 81, and is located below the shaft portion 60, as shown in Figures 4 and 5. In the first embodiment, the second plate portion 82 is a separate body from the first plate portion 81.

[0027] The second plate portion 82 has a facing portion 820, a first inclined portion 821, a second inclined portion 822, and a bent portion 83. The facing portion 820 has a facing surface S0 that faces the contact surface 81b in the radial direction. The first inclined portion 821 is connected to one end (+Z side) of the facing portion 820 and has a first inclined surface S1 inclined with respect to the facing surface S0. The first inclined portion 821 is a portion of the second plate portion 82 that is bent from one end of the facing portion 820 in the +Y direction by a predetermined angle. The second inclined portion 822 is connected to the other end (-Z side) of the facing portion 820 and has a second inclined surface S2 inclined with respect to the facing surface S0. The second inclined portion 822 is a portion of the second plate portion 82 that is bent from the other end of the facing portion 820 in the +Y direction by a predetermined angle.

[0028] The portion of the shaft portion 60 that contacts the contact portion 80 is generally circular when viewed from a direction along the axis AX. This portion also has a curvature with respect to the axis AX, and is generally torus-shaped. The contact portion 80 contacts the shaft portion 60 at the contact surface 81b, the first inclined surface S1, and the second inclined surface S2. The opposing surface S0 does not contact the shaft portion 60. As described later, the contact portion 80 fixed to the fixed portion 90 supports the shaft portion 60 with the contact surface 81b, the first inclined surface S1, and the second inclined surface S2 in a point contact state. In other words, the contact portion 80 fixed to the fixed portion 90 supports the shaft portion 60 rotatably around the axis AX by three-point support. This can reduce the contact resistance between the shaft portion 60 and the contact portion 80.

[0029] 5, a pair of radially opposing flat surfaces 60a, 60b are formed on the outer circumferential surface of the shaft portion 60 in a portion that does not contact the contact portion 80. The flat surfaces 60a, 60b appear due to restrictions imposed by the direction in which the mold is removed when the shaft portion 60 is injection molded from resin. The flat surfaces 60a, 60b are formed at positions that do not contact the contact portion 80 even when the reflecting portion 31 moves within the range in which it can rotate.

[0030] As shown in FIG. 6, the bent portion 83 is formed by bending the opposing portion 820, and has an orthogonal surface T perpendicular to the opposing surface S0. The bent portion 83 is press-fitted into a press-fit portion 92a of the fixed portion 90, which will be described later, so that the second plate portion 82 is positioned in the thrust direction (direction along the axis AX). As shown in FIG. 6, position guides 820a, 821a, and 822a are formed at the ends of the opposing portion 820, the first inclined portion 821, and the second inclined portion 822 on the -X side, which are bent so as to hang on the ends of a hole 94a, which will be described later. The position guides 820a, 821a, and 822a are provided to guide the position when the second plate portion 82 is assembled to the fixed portion 90.

[0031] 4 and 5, the fixing portion 90 has an installation portion 91 on which one end (+Z side) of the first plate portion 81 is installed, a bearing portion 92 that receives the shaft portion 60 via the second plate portion 82, and a main attachment portion 93 that constitutes an attachment portion to the housing 40. Moreover, the fixing portion 90 has a wall portion 94 in which a hole 94a is formed, as shown in FIG.

[0032] The installation portion 91 is a plate-like portion having a main surface substantially parallel to the XZ plane, and has a mounting hole H2 communicating with the through hole H1 of the first plate portion 81. The first plate portion 81 is fixed to the installation portion 91 by screws (not shown) inserted into the through hole H1 and the mounting hole H2.

[0033] The bearing portion 92 is a portion recessed downward from the end portion on the -Z side of the installation portion 91, and is formed in a shape corresponding to the second plate portion 82. Specifically, the upper surface of the bearing portion 92 is shaped to contact the lower surfaces of the opposing portion 820, the first inclined portion 821, and the second inclined portion 822.

[0034] As shown in FIG. 7, the bearing portion 92 has a press-fit portion 92a into which the bent portion 83 of the second plate portion 82 is press-fitted. The press-fit portion 92a has a long hole 92b elongated in the Z direction, a claw 92c located at one end of the long hole 92b in the width direction (X direction), and outer walls 92d and 92e located at the other end of the long hole 92b in the width direction. The claw 92c protrudes in the +X direction from a middle portion in the longitudinal direction (Z direction) of the long hole 92b. Each of the outer walls 92d and 92e has a portion facing the claw 92c in the X direction, and faces each other with a slight gap in the Z direction. Specifically, in the press-fit portion 92a, a portion where a distance D in the X direction between the claw 92c and the outer walls 92d and 92e occurs is a portion into which the bent portion 83 is press-fitted. The distance D is set to be slightly narrower than the plate thickness of the bent portion 83. The bend forming portion 83 is press-fitted into a location of the press-fit portion 92a where a gap D is generated, whereby the second plate portion 82 is fixed to the bearing portion 92. In particular, the bend forming portion 83 having the orthogonal surface T is press-fitted into the press-fit portion 92a, whereby the second plate portion 82 is suppressed from shifting in the thrust direction relative to the bearing portion 92.

[0035] 5, the main mounting portion 93 is a box-shaped portion formed by rising from the end of the bearing portion 92 on the -Z side. In this embodiment, the main mounting portion 93 has a triangular side. The main mounting portion 93 has a boss B1 that protrudes downward, and is attached to the housing 40 by this boss B1. The bearing portion 92 is also provided with a boss B2 that protrudes downward. The fixing portion 90 is attached to and fixed to the housing 40 by using the boss B1 and boss B2.

[0036] Furthermore, the main mounting portion 93 has an insertion portion 93a into which the hook 81a of the first plate portion 81 is inserted. As shown in Fig. 5, the insertion portion 93a is a hole formed in the end portion of the main mounting portion 93 on the bearing portion 92 side. The hook 81a of the first plate portion 81 is inserted into and hooked onto the insertion portion 93a which is a hole.

[0037] 7, the wall portion 94 is provided so as to stand along the YZ plane. The installation portion 91, the bearing portion 92, and the main mounting portion 93 described above are formed so as to protrude in the +X direction from the wall portion 94. The shaft portion 60 passes through a hole 94a formed in the wall portion 94 to reach the bearing portion 92.

[0038] The HUD device 100 according to the first embodiment described above is provided on the reflecting unit 31 and includes a shaft portion 60 along the axis AX and a support portion 70 supporting the shaft portion 60 rotatably about the axis AX. The support portion 70 includes a contact portion 80 that contacts the shaft portion 60 in the radial direction centered on the axis AX, and a fixing portion 90 to which the contact portion 80 is fixed. The contact portion 80 includes a first plate portion 81 and a second plate portion 82 located on the opposite side of the first plate portion 81 across the shaft portion 60. The first plate portion 81 is elastic and presses the shaft portion 60 toward the second plate portion 82. According to this configuration, for example, the plate-shaped contact portion 80 is interposed between the shaft portion 60 and the fixed portion 90, each of which is made of resin, so that it is possible to reduce wear of the shaft portion 60 and the fixed portion 90 due to rotation of the reflecting portion 31. In addition, since the contact portion 80 supports the shaft portion 60 while pressing it, it is possible to stably support the reflecting portion 31 for rotation and has excellent cushioning properties.

[0039] In the first embodiment, the first plate portion 81 has a contact surface 81b that contacts the shaft portion 60 in the radial direction. The second plate portion 82 includes a facing portion 820 having a facing surface S0 that faces the contact surface 81b in the radial direction, a first inclined portion 821 that is connected to one end of the facing portion 820 and has a first inclined surface S1 inclined with respect to the facing surface S0, and a second inclined portion 822 that is connected to the other end of the facing portion 820 and has a second inclined surface S2 inclined with respect to the facing surface S0. Each of the contact surface 81b, the first inclined surface S1, and the second inclined surface S2 contacts the shaft portion 60. According to this configuration, the shaft portion 60 can be supported at three points of the contact portion 80, and therefore the reflecting portion 31 can be rotated stably while reducing the contact resistance.

[0040] In the first embodiment, the first plate portion 81 and the second plate portion 82 are separate bodies, and the second plate portion 82 is provided with a bent portion 83 formed by bending from the opposing portion 820 and having a surface (orthogonal surface T) perpendicular to the opposing surface S0. The fixing portion 90 has a press-fit portion 92a into which the bent portion 83 is press-fitted. As described above, this configuration can prevent the second plate portion 82 from being displaced in the thrust direction relative to the fixed portion 90. Furthermore, the degree of freedom in designing the first plate portion 81 and the second plate portion 82 can be ensured.

[0041] Specifically, the first plate portion 81 is a leaf spring, and the second plate portion 82 is formed from the same material as the first plate portion 81. With this configuration, the sliding resistance of the shaft portion 60 against the contact portion 80 can be made uniform, so that wear of the shaft portion 60 can be reduced.

[0042] Second embodiment From here on, a HUD device 100 according to a second embodiment, which has a part of its configuration different from that of the first embodiment, will be described. Note that, in order to facilitate understanding of the description, the same reference numerals as in the first embodiment are used for configurations having the same functions as those in the first embodiment, and descriptions thereof will be omitted.

[0043] 8, the HUD device 100 according to the second embodiment includes a support portion 270 that supports the shaft portion 60 rotatably about the axis line AX. The support portion 270 includes a contact portion 280 that contacts the shaft portion 60 in the radial direction about the axis line AX, and a fixing portion 290 to which the contact portion 280 is fixed.

[0044] 8 and 9, the contact portion 280 has a first plate portion 81 and a second plate portion 82 having the same functions as those in the first embodiment, and a connecting portion 284 having a bent shape that connects an end of the first plate portion 81 and an end of the second plate portion 82. In the second embodiment, the first plate portion 81, the second plate portion 82, and the connecting portion 284 are integrally formed.

[0045] The connecting portion 284 of the contact portion 280 is inserted into an insertion portion 293a formed in the main attachment portion 93 of the fixed portion 290. The contact portion 280 according to the second embodiment is fixed to the fixed portion 90 by inserting the connecting portion 284 into the insertion portion 293a in this manner and then fixing the first plate portion 81 to the installation portion 91 with a screw (not shown).

[0046] As shown in FIG. 9, the contact portion 280 according to the second embodiment also has a bent portion 283 formed by bending the opposing portion 820, but this bent portion 283 is not press-fitted into the fixed portion 290 as in the first embodiment. The contact portion 280 according to the second embodiment is integral, and as described above, the position of the contact portion 280 relative to the fixed portion 290 can be determined by the first plate portion 81 and the connecting portion 284. The bent portion 283 according to the second embodiment is provided to guide the position when the second plate portion 82 is assembled to the fixed portion 290. As shown in FIG. 10, a recess 292 in which the bent portion 283 is hung is formed in the bearing portion 92 of the fixed portion 290 according to the second embodiment.

[0047] 9, unlike the first embodiment, position guides 821a, 822a as in the first embodiment are not provided at the -X side ends of the first inclined portion 821 and the second inclined portion 822. This is also because the contact portion 280 in the second embodiment is integral, and the position of the contact portion 280 relative to the fixed portion 290 can be determined by the first plate portion 81 and the connecting portion 284.

[0048] 9, the width (length in the X direction) of the connecting portion 284 is narrower than the width of each of the first plate portion 81 and the second plate portion 82. With this configuration, the connecting portion 284 can be easily inserted into the insertion portion 293a when assembling the contact portion 280 to the fixed portion 290. Also, the elasticity of the connecting portion between the first plate portion 81 and the second plate portion 82 can be increased, and the shaft portion 60 can be prevented from being excessively pinched by the first plate portion 81 and the second plate portion 82.

[0049] In the second embodiment described above, the support portion 270 includes a contact portion 280 that contacts the shaft portion 60 in the radial direction centered on the axis line AX, and a fixing portion 290 to which the contact portion 280 is fixed. The contact portion 280 includes a first plate portion 81 and a second plate portion 82 that is located on the opposite side of the first plate portion 81 with the shaft portion 60 in between. The first plate portion 81 is elastic and presses the shaft portion 60 toward the second plate portion 82. According to this configuration, similarly to the first embodiment, it is possible to reduce wear caused by the rotation of the reflecting portion 31. Furthermore, it is possible to stably support the reflecting portion 31 so as to be rotatable, and it is also excellent in shock-absorbing properties.

[0050] Also in the second embodiment, the contact surface 81b, the first inclined surface S1, and the second inclined surface S2 each come into contact with the shaft portion 60. According to this configuration, similarly to the first embodiment, the contact resistance can be reduced and the reflecting portion 31 can be rotated stably.

[0051] In the second embodiment, the fixing portion 290 has an insertion portion 293a into which the connecting portion 284 is inserted. The first plate portion 81, the second plate portion 82, and the connecting portion 284 are integrally formed. With this configuration, an increase in the number of parts can be suppressed, and the assembly of the contact portion 280 to the fixed portion 290 can be facilitated.

[0052] Furthermore, the width of the connecting portion 284 is narrower than the width of each of the first plate portion 81 and the second plate portion . As described above, this configuration makes it easy to insert the connecting portion 284 into the insertion portion 293a when assembling the contact portion 280 to the fixed portion 290. In addition, the shaft portion 60 can be prevented from being excessively pinched by the first plate portion 81 and the second plate portion 82.

[0053] Specifically, the first plate portion 81 is a leaf spring, and the second plate portion 82 is formed from the same material as the first plate portion 81. With this configuration, the sliding resistance of the shaft portion 60 against the contact portion 280 can be made uniform, so that wear of the shaft portion 60 can be reduced.

[0054] The present invention is not limited to the above-described embodiment and drawings, and can be modified (including the deletion of components) as appropriate without departing from the spirit of the present invention.

[0055] The display unit 10 is not limited to one using an LCD, and may be one using an OLED (Organic Light-Emitting Diode). The display unit 10 may also be one using a reflective display device such as a DMD (Digital Micromirror Device) or LCOS (Liquid Crystal On Silicon).

[0056] Furthermore, a plurality of folding mirrors 20 may be provided in the optical path of the display light L connecting the display unit 10 and the reflector 31. The number of folding mirrors 20 to be used and how the optical path of the display light L is folded can be appropriately changed according to the design.

[0057] Further, the projection target (light-transmitting member) of the display light L is not limited to the windshield 3 of the vehicle 1, but may be a combiner constituted by a plate-shaped half mirror, a hologram element, or the like.

[0058] In addition, the type of vehicle 1 on which the HUD device 100 is mounted is not limited, and the HUD device 100 can be applied to various vehicles such as four-wheeled motor vehicles, motorcycles, etc. In addition, the HUD device 100 may be mounted on vehicles other than the vehicle 1, such as an airplane, a ship, a snowmobile, etc.

[0059] In the above, an example has been shown in which the contact portions 80, 280 are made of stainless steel, but the material is not limited to this. The contact portions 80, 280 may be made of a metal other than stainless steel, or may be made of resin.

[0060] The shape of the shaft portion 60 may be generally cylindrical, and is not limited to the above example and may be modified as desired.

[0061] Furthermore, the reflecting portion 31 of the mirror unit 30 is preferably a concave mirror, but may be a mirror other than a concave mirror, such as a plane mirror or a free-form mirror, as long as it reflects the display light L.

[0062] In the above description, in order to facilitate understanding of the present invention, descriptions of well-known technical matters have been omitted as appropriate. [Explanation of symbols]

[0063] 100...Head-up display (HUD) device 1...vehicle, 2...dashboard, 3...windshield, 4...user L...display light, V...virtual image 10…Display section 20…Folding mirror 30…Mirror unit 31...Reflection part, 31a...Mirror surface 32...holder, 32a...lever 40: housing, 40a: opening, 41: cover 50: drive unit, 51: motor, 52: transmission unit, 53: case 60...Shaft part, AX...Axis line 70,270…Support part 80,280…Contact part 81...first plate portion, 81a...hook, 81b...contact surface, H1...through hole 82…Second plate part 820: opposing portion, S0: opposing surface 821...first inclined part, S1...first inclined surface 822...Second slope part, S2...Second slope surface 83,283...Bending formation part, T...Orthogonal surface 284...Connection part 90,290…Fixed part 91: Installation section, H2: Mounting hole 92...Bearing part 92a…Press-fit section 93…Main mounting part 93a, 293a…insertion part 94...Wall part

Claims

1. A display unit that emits display light representing an image; A reflecting portion that reflects the display light; A shaft portion provided on the reflecting portion and extending along an axis line; A support portion that supports the shaft portion rotatably around the axis line, The support portion includes a contact portion that contacts the shaft portion in a radial direction centered on the axis line, and a fixing portion to which the contact portion is fixed, The contact portion has a first plate portion and a second plate portion located on the opposite side of the first plate portion with the shaft portion interposed therebetween, The first plate portion has elasticity and presses the shaft portion toward the second plate portion, The first plate portion has a contact surface that contacts the shaft portion in the radial direction, The second plate portion is an opposing portion having an opposing surface that faces the contact surface in the radial direction; a first inclined portion connected to one end of the opposing portion and having a first inclined surface inclined with respect to the opposing surface; a second inclined portion connected to the other end of the opposing portion and having a second inclined surface inclined with respect to the opposing surface, each of the contact surface, the first inclined surface, and the second inclined surface contacts the shaft portion; The first plate portion and the second plate portion are separate bodies, The second plate portion includes a bent portion formed by bending the opposing portion and having a surface perpendicular to the opposing surface, The fixing portion has a press-fit portion into which the bent portion is press-fitted. Head-up display device.

2. A display unit that emits display light representing an image; A reflecting portion that reflects the display light; A shaft portion provided on the reflecting portion and extending along an axis line; A support portion that supports the shaft portion rotatably around the axis line, The support portion includes a contact portion that contacts the shaft portion in a radial direction centered on the axis line, and a fixing portion to which the contact portion is fixed, The contact portion has a first plate portion and a second plate portion located on the opposite side of the first plate portion with the shaft portion interposed therebetween, The first plate portion has elasticity and presses the shaft portion toward the second plate portion, the contact portion connects an end of the first plate portion and an end of the second plate portion and has a connecting portion having a bent shape, the fixing portion has an insertion portion into which the connecting portion is inserted, The first plate portion, the second plate portion, and the connecting portion are integrally formed. Head-up display device.

3. The width of the connecting portion is narrower than the width of each of the first plate portion and the second plate portion. The head-up display device according to claim 2 .

4. The first plate portion is a leaf spring, The second plate portion is formed from the same material as the first plate portion. The head-up display device according to any one of claims 1 to 3.

Images