CN214201929U - Head-up display device - Google Patents
Head-up display device Download PDFInfo
- Publication number
- CN214201929U CN214201929U CN202120373662.9U CN202120373662U CN214201929U CN 214201929 U CN214201929 U CN 214201929U CN 202120373662 U CN202120373662 U CN 202120373662U CN 214201929 U CN214201929 U CN 214201929U
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- China
- Prior art keywords
- plate
- plate portion
- shaft
- contact
- head
- Prior art date
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
- G02B7/182—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors
- G02B7/198—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors with means for adjusting the mirror relative to its support
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0149—Head-up displays characterised by mechanical features
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0149—Head-up displays characterised by mechanical features
- G02B2027/0154—Head-up displays characterised by mechanical features with movable elements
- G02B2027/0159—Head-up displays characterised by mechanical features with movable elements with mechanical means other than scaning means for positioning the whole image
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0179—Display position adjusting means not related to the information to be displayed
- G02B2027/0181—Adaptation to the pilot/driver
Abstract
The invention provides a head-up display (HUD) device capable of reducing abrasion along with rotation of a reflection part. The HUD device is provided with: a display unit for emitting display light for displaying an image; a reflection unit (31) that reflects display light; a shaft (60) provided on the reflection section (31) and extending along the Axis (AX); and a support part (70) which supports the shaft part (60) in a rotatable manner with the Axis (AX) as the center. The support part (70) is provided with: a contact portion (80) that contacts the shaft portion (60) in a radial direction about the Axis (AX), and a fixing portion (90) that fixes the contact portion (80). The contact portion (80) has: the shaft section (60) is sandwiched between the first plate section (81) and the second plate section (82) which is located on the opposite side of the first plate section (81). The first plate section (81) has elasticity and presses the shaft section (60) against the second plate section (82).
Description
Technical Field
The present invention relates to a head-up display device.
Background
There is known a Head-Up Display (HUD) device that emits Display light of a Display image to a translucent member such as a windshield of a vehicle. As a conventional HUD device, for example, patent document 1 describes that the HUD device includes: a reflection unit that reflects display light; a support portion provided on the shaft portion of the reflection portion and rotatably supporting the reflection portion via the shaft portion; and a HUD device having an elastic member for pressing the shaft portion against the support portion.
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open publication No. 2018-192962
As described in patent document 1, in the structure in which the shaft portion is pressed against the support portion by the elastic member, the shaft portion and the support portion may be worn away with the rotation of the reflection portion, and thus there is room for improvement.
Disclosure of Invention
The present invention has been made in view of the above circumstances, and an object thereof is to provide a head-up display device capable of reducing wear accompanying rotation of a reflection unit.
To achieve the above object, a head-up display device according to the present invention includes:
a display unit that emits display light for displaying an image;
a reflection unit that reflects the display light;
a shaft portion provided in the reflection portion and along an axis; and
a support portion that supports the shaft portion so as to be rotatable about the axis,
the support portion includes a contact portion that contacts the shaft portion in a radial direction about the axis, and a fixing portion that fixes the contact portion,
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 against the second plate portion.
Effects of the invention
According to the present invention, wear associated with rotation of the reflection portion can be reduced.
Drawings
Fig. 1 is a view showing a mounting mode of a head-up display (HUD) device according to a first embodiment of the present invention on a vehicle.
Fig. 2 is a schematic configuration diagram of the HUD device according to the first embodiment.
Fig. 3 is a perspective view of the mirror unit according to the first embodiment.
Fig. 4 is a main portion sectional view of the mirror unit according to the first embodiment taken along line a-a shown in fig. 3.
Fig. 5 is an enlarged view of a main part of the mirror unit according to the first embodiment.
Fig. 6 is a perspective view of the contact portion according to the first embodiment.
Fig. 7 is a perspective view of a main portion of the fixing portion according to the first embodiment.
Fig. 8 is an enlarged view of a main part of the mirror unit according to the second embodiment.
Fig. 9 is a perspective view of a contact portion according to the second embodiment.
Fig. 10 is a perspective view of a main portion of a fixing portion according to a second embodiment.
Description of the symbols
100 head-up display (HUD) device
1 vehicle
2 Instrument panel
3 windscreen
4 users
L display light
Virtual image of V
10 display part
20 fold mirror
30 mirror unit
31 reflection part
31a mirror surface
32 holder
32a rod
40 frame body
40a opening part
41 cover
50 drive part
51 electric machine
52 transfer part
53 casing
60 shaft part
AX axis
70. 270 supporting part
80. 280 contact part
81 first plate part
81a hook
81b contact surface
H1 through hole
82 second plate part
820 opposite parts
S0 opposite surface
821 first inclined part
S1 first inclined plane
822a second inclined part
S2 second inclined plane
83. 283 bent forming part
Orthogonal plane T
284 joint part
90. 290 fixed part
91 setting part
H2 mounting hole
92 bearing part
92a press-in part
93 main mounting part
93a, 293a insertion part
94 wall portion
Detailed Description
An embodiment of the present invention will be described with reference to the drawings.
(first embodiment)
As shown in fig. 1, a head-up display (HUD) device 100 according to a first embodiment of the present invention is disposed, for example, in an instrument panel 2 of a vehicle 1. The HUD device 100 emits the display light L toward the windshield 3. The display light L reflected by the windshield 3 is directed toward the user 4 (mainly the driver of the vehicle 1) side, so that the user 4 visually recognizes the image displayed by the display light L as a virtual image V. The virtual image V is displayed in front of the vehicle 1 via the windshield 3. The virtual image V displays various information (hereinafter referred to as vehicle information) related to the vehicle 1. The vehicle information includes not only information of the vehicle 1 itself but also external information of the vehicle 1.
Hereinafter, the respective configurations will be described using the left-right, up-down, and front-rear directions of the vehicle 1. In each figure, an X axis in the left-right direction, a Y axis in the up-down direction, and a Z axis in the front-rear direction are shown. The direction of the arrow indicating each axis of X, Y, Z may be referred to as the "+" direction, and the opposite side may be referred to as the "-" direction.
As shown in fig. 2, the HUD device 100 includes: a display unit 10, a folding mirror 20, a mirror unit 30 including a reflection unit 31, and a housing 40 accommodating these components. The HUD device 100 includes a control unit, not shown.
The frame 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 shown in fig. 1. The opening 40a is covered with a translucent cover 41.
As shown in fig. 2, the display unit 10 displays an image, and emits display light L for displaying the image toward the folding mirror 20. The Display unit 10 includes, for example, an LCD (Liquid Crystal Display) and a backlight for backlighting the LCD. The LCD is, for example, a TFT (Thin Film Transistor) type LCD. The backlight is constituted by, for example, an LED (Light Emitting Diode), a Light guide member, and the like.
The folding mirror 20 is formed of, for example, a flat mirror, and reflects the display light L emitted from the display unit 10 toward the reflection unit 31. The folding mirror 20 is not limited to a flat mirror, and may be a free-form surface mirror. The reflecting mirror 20 may be omitted, and the display light L emitted from the display unit 10 may directly reach the reflecting unit 31.
As shown in fig. 3, the mirror unit 30 includes: the reflecting portion 31, the holder 32, the driving portion 50 for driving the reflecting portion 31 and the holder 32 to rotate about the axis AX, and the support portion 70 for rotatably supporting the shaft portion 60 provided in the holder 32. In the drawings, the axis AX is shown as being parallel to the X axis for ease of understanding, but the axis AX is not limited to being parallel to the X axis and may be inclined to some extent with respect to the X axis.
The reflection unit 31 is formed of, for example, a concave mirror, and expands the display light L from the reflecting mirror 20 and reflects the display light L toward the windshield. The mirror surface 31a of the concave mirror is set to a concave shape that cancels out deformation (distortion) caused by the shape of the curved windshield 3.
The holder 32 is made of, for example, resin, and holds the reflection portion 31 from the back side of the mirror surface 31 a. The holder 32 includes a shaft portion 60 provided at one end (+ X side) and a rod 32a provided at the other end (-X side). The rod 32a projects substantially in the direction toward which the mirror surface 31a faces.
The holder 32 may be omitted, and the shaft portion 60 may be provided in the reflection portion 31. The rod 32a may be provided in the reflection unit 31 in the same manner.
The drive unit 50 includes: a motor 51, a transmission 52 and a housing 53. The motor 51 is constituted by, for example, a stepping motor, and is driven under the control of a control unit not shown. The transmission unit 52 transmits the rotational power of the motor 51 to the lever 32 a. The transmission unit 52 includes a plurality of gears interposed between the output shaft of the motor 51 and the gear provided at the distal end of the lever 32 a. The motor 51 rotationally drives the lever 32a about the axis AX via the transmission portion 52. Thereby, the holder 32 and the reflection portion 31 rotate about the axis AX. The housing 53 holds the motor 51 and the transmission unit 52, and is fixed to the housing 40. The case 53 supports the other end portion (-X-side end portion) of the holder 32 at a portion not shown so as to be rotatable about the axis AX.
The shaft portion 60 is formed in a cylindrical shape extending along the axis AX. The support portion 70 supports the shaft portion 60 rotatably about the axis AX. The shaft 60 and the support 70 will be described in detail later.
The control unit, not shown, is constituted by 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 portion of the housing 40. The control unit controls the driving of the motor 51 to rotate the reflection unit 31 and the holder 32, thereby controlling the display position of the virtual image V in the vertical direction. The Control Unit communicates with a system such as an ECU (Electronic Control Unit) that controls each Unit of the vehicle 1, and displays an image representing vehicle information on the display Unit 10.
In the HUD device 100 configured as described above, as shown in fig. 2, the display light L emitted from the display unit 10 and reflected by the folding mirror 20 and the reflection unit 31 in this order is emitted to the outside of the HUD device 100 through the cover 41. As shown in fig. 1, the virtual image V is displayed by reflection of the display light L emitted from the HUD device 100 by the windshield 3.
(shaft part 60 and support part 70)
Next, the shaft portion 60 and the support portion 70 will be specifically described.
As shown in fig. 3 to 5, the support portion 70 includes: a contact portion 80 that contacts the shaft portion 60 in a radial direction about the axis AX, and a fixing portion 90 that fixes the contact portion 80.
As shown in fig. 4 and 5, the contact portion 80 includes: a first plate part 81, and a second plate part 82 that is positioned on the opposite side of the first plate part 81, sandwiching the shaft part 60.
The first plate portion 81 is a plate spring having elasticity in the Y direction, and is formed of, for example, stainless steel. As shown in fig. 4 and 5, the first plate 81 is positioned above the shaft 60, and its main surface is disposed substantially parallel to the XZ plane. The first plate portion 81 is elongated in the Z direction, and is formed with a through hole H1 at one end (+ Z side). The first plate portion 81 is fixed to an installation portion 91 of the fixing portion 90, which will be described later, 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 portion (-Z side) of the first plate portion 81. The other end of the first plate 81 is hooked to an insertion portion 93a of the fixing portion 90, which will be described later, by a hook 81 a. The lower surface of the portion between the through hole H1 and the hook 81a of 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 "radial direction") centered on the axis AX. The first plate 81 presses the shaft 60 against the second plate 82 via the contact surface 81 b.
The second plate portion 82 is formed of the same material as the first plate portion 81, and is located below the shaft portion 60 as shown in fig. 4 and 5. In the first embodiment, the second plate portion 82 is separate from the first plate portion 81.
The second plate portion 82 has: the facing portion 820, the first inclined portion 821, the second inclined portion 822, and the bending formation portion 83. The facing portion 820 has a facing surface S0 facing 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 in the + Y direction by a predetermined angle from one end of the opposing portion 820. The second inclined part 822 is connected to the other end (-Z side) of the facing part 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 in the + Y direction by a predetermined angle from the other end of the facing portion 820.
The portion of the shaft portion 60 that contacts the contact portion 80 is substantially circular when viewed in the direction along the axis AX. This portion also has a curvature with respect to the axis AX and is substantially annular. Each of the contact surface 81b, the first inclined surface S1, and the second inclined surface S2 of the contact portion 80 contacts the shaft portion 60. In addition, the facing surface S0 does not contact the shaft portion 60. As will be described later, each of the contact surface 81b of the contact portion 80, the first inclined surface S1, and the second inclined surface S2 fixed to the fixing portion 90 supports the shaft portion 60 in a point contact state. That is, the contact portion 80 fixed to the fixing portion 90 supports the shaft portion 60 to be rotatable about the axis AX by three-point support. This can reduce contact resistance between the shaft portion 60 and the contact portion 80.
As shown in fig. 5, a pair of flat surface portions 60a and 60b facing each other in the radial direction are formed on the outer peripheral surface of the shaft portion 60 at portions not in contact with the contact portion 80. The flat portions 60a and 60b are caused by a restriction on a direction in which the mold is removed when the shaft portion 60 is injection-molded with resin. The flat surface portions 60a and 60b are formed at positions that do not come into contact with the contact portion 80 even if the reflection portion 31 moves within the range of rotatable movement.
As shown in fig. 6, the bent portion 83 is formed by bending from the facing portion 820 and has an orthogonal surface T orthogonal to the facing surface S0. The second plate portion 82 is positioned in the sliding direction (the direction along the axis AX) by press-fitting the bending formation portion 83 into a press-fitting portion 92a, described later, of the fixing portion 90. As shown in fig. 6, positioning guides 820a, 821a, 822a bent to be caught by an end of a hole 94a described later are formed at the end portions on the-X side of the facing portion 820, the first inclined portion 821, and the second inclined portion 822. The positioning guides 820a, 821a, 822a are provided for guiding the position when the second plate portion 82 is assembled to the fixing portion 90.
As shown in fig. 4 and 5, the fixing portion 90 is formed of, for example, resin, and includes: an installation portion 91 where one end portion (+ Z side) of the first plate portion 81 is installed, a bearing portion 92 which receives the shaft portion 60 via the second plate portion 82, and a main attachment portion 93 which constitutes an attachment portion to the housing 40. As shown in fig. 7, the fixing portion 90 has a wall portion 94 formed with a hole 94 a.
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 81 is fixed to the installation portion 91 by a screw (not shown) inserted into the through hole H1 and the attachment hole H2.
The bearing portion 92 is a portion recessed downward from the-Z-side end of the installation portion 91, and is formed in a shape corresponding to the second plate portion 82. Specifically, the upper surface of bearing portion 92 is in contact with the lower surface of each of opposing portion 820, first inclined portion 821, and second inclined portion 822.
As shown in fig. 7, the bearing portion 92 has a press-fitting portion 92a into which the bent portion 83 of the second plate portion 82 is press-fitted. The press-fitting portion 92a includes: a long hole 92b elongated in the Z direction, a claw 92c positioned on one end side in the width direction (X direction) of the long hole 92b, and outer walls 92d, 92e positioned on the other end side in the width direction of the long hole 92 b. The claw 92c protrudes in the + X direction from an intermediate portion in the longitudinal direction (Z direction) of the long hole 92 b. Each of the outer walls 92d, 92e has a portion facing the claw 92c in the X direction, and faces each other with a certain space in the Z direction. Specifically, in the press-fitting portion 92a, a portion where the X-direction interval D between the claw 92c and the outer walls 92D and 92e is generated is a position where the bending formation portion 83 is press-fitted. The interval D is set to be narrower than the plate thickness of the bend forming portion 83. The second plate portion 82 is fixed to the bearing portion 92 by press-fitting the bent portion 83 into a portion where the gap D of the press-fitting portion 92a is generated. In particular, the second plate portion 82 is suppressed from shifting in the sliding direction with respect to the bearing portion 92 by press-fitting the bent forming portion 83 having the orthogonal surface T into the press-fitting portion 92 a.
As shown in fig. 5, the main attachment portion 93 is a box-shaped portion formed by being pushed up from the end portion on the-Z side of the bearing portion 92. In this embodiment, the side surface of the main attachment portion 93 is formed in a triangular shape. The main attachment portion 93 has a boss B1 protruding downward, and is attached to the frame 40 via the boss B1. Further, the bearing portion 92 is also provided with a boss B2 projecting downward. The fixing portion 90 is attached and fixed to the frame 40 by the bosses B1 and B2.
The main attachment 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 formed of a hole formed in the end portion of the main attachment portion 93 on the bearing portion 92 side. The hook 81a of the first plate 81 is inserted into the insertion portion 93a formed of a hole and is hooked.
As shown in fig. 7, the wall portion 94 is provided upright along the YZ plane. The installation portion 91, the bearing portion 92, and the main attachment portion 93 are formed so as to be pushed out from the wall portion 94 in the + X direction. Shaft portion 60 reaches bearing portion 92 through hole 94a formed in wall portion 94.
The HUD device 100 according to the first embodiment described above includes: a shaft portion 60 provided along the axis AX in the reflection portion 31, and a support portion 70 rotatably supporting the shaft portion 60 about the axis AX. The support portion 70 includes: a contact portion 80 that contacts the shaft portion 60 in a radial direction about the axis AX, and a fixing portion 90 that fixes the contact portion 80. The contact portion 80 has: a first plate part 81, and a second plate part 82 that is positioned on the opposite side of the first plate part 81, sandwiching the shaft part 60. The first plate 81 has elasticity and presses the shaft 60 against the second plate 82.
According to this configuration, for example, the plate-like contact portion 80 is interposed between the shaft portion 60 and the fixing portion 90, which are made of resin, and therefore, wear of each of the shaft portion 60 and the fixing portion 90, which are caused by rotation of the reflection portion 31, can be reduced. Further, since the contact portion 80 presses and supports the shaft portion 60, the reflection portion 31 can be stably and rotatably supported, and the cushioning property is excellent.
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: an opposing portion 820 having an opposing surface S0 that faces the contact surface 81b in the radial direction; a first inclined portion 821 connected to one end of the facing portion 820 and having a first inclined surface S1 inclined with respect to the facing surface S0; and a second inclined part 822 connected to the other end of the facing part 820 and having 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, since the shaft portion 60 can be supported at three positions of the contact portion 80, the reflection portion 31 can be stably rotated while reducing contact resistance.
In the first embodiment, the first plate portion 81 and the second plate portion 82 are separate bodies, and the second plate portion 82 includes the bent portion 83 formed by bending from the facing portion 820 and having a surface (orthogonal surface T) orthogonal to the facing surface S0. The fixing portion 90 has a press-fitting portion 92a into which the bending portion 83 is press-fitted.
According to this structure, as described above, the second plate portion 82 can be suppressed from being displaced in the sliding direction with respect to the fixing portion 90. In addition, the degree of freedom in design of the first plate portion 81 and the second plate portion 82 can be ensured.
Specifically, the first plate 81 is a plate spring, and the second plate 82 is formed of the same material as the first plate 81.
According to this configuration, the sliding resistance of the shaft portion 60 with respect to the contact portion 80 can be made uniform, and therefore, the wear of the shaft portion 60 can be reduced.
(second embodiment)
Next, a HUD device 100 according to a second embodiment, which is partially different from the first embodiment in structure, will be described. For ease of understanding, the same reference numerals as in the first embodiment are used for the same components having the same functions as in the first embodiment, and the description thereof is omitted.
As shown in fig. 8, the HUD device 100 according to the second embodiment includes a support portion 270 that rotatably supports the shaft portion 60 about the axis AX. The support portion 270 includes: a contact portion 280 that contacts the shaft portion 60 in a radial direction about the axis AX, and a fixing portion 290 that fixes the contact portion 280.
As shown in fig. 8 and 9, the contact portion 280 includes: a first plate portion 81 and a second plate portion 82 having the same functions as those of the first embodiment; and a bent coupling portion 284 for coupling the end of the first plate portion 81 and the end of the second plate portion 82. In the second embodiment, the first plate portion 81, the second plate portion 82, and the coupling portion 284 are integrally formed.
The coupling portion 284 of the contact portion 280 is inserted into the insertion portion 293a of the main attachment portion 93 formed in the fixing portion 290. After the connection portion 284 is inserted into the insertion portion 293a in this manner, the first plate portion 81 is fixed to the installation portion 91 by a screw (not shown), and the contact portion 280 according to the second embodiment is fixed to the fixing portion 90.
As shown in fig. 9, the contact portion 280 according to the second embodiment also includes a bent portion 283 formed by bending from the opposing portion 820, but the bent portion 283 is not press-fitted into the fixing portion 290 as in the first embodiment. The contact portion 280 of the second embodiment is integrated, and as described above, the position of the contact portion 280 with respect to the fixing portion 290 can be determined by the first plate portion 81 and the coupling portion 284. The bent portion 283 of the second embodiment is provided to guide the position of the second plate portion 82 when it is assembled to the fixing portion 290. As shown in fig. 10, the bearing portion 92 of the fixing portion 290 according to the second embodiment is formed with a recess 292 into which the bent portion 283 is hooked.
As shown in fig. 9, unlike the first embodiment, the positioning guides 821a and 822a of the first embodiment are not provided at the-X-side end portions of the first inclined portion 821 and the second inclined portion 822. This is also because the contact portion 280 of the second embodiment is integrated, and the position of the contact portion 280 with respect to the fixing portion 290 can be determined by the first plate portion 81 and the coupling portion 284.
As shown in fig. 9, the width (length in the X direction) of the connection portion 284 is smaller than the width of each of the first plate portion 81 and the second plate portion 82. According to this configuration, when the contact portion 280 is assembled to the fixing portion 290, the coupling portion 284 can be easily inserted into the insertion portion 293 a. Further, 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 sandwiched by the first plate portion 81 and the second plate portion 82.
In the second embodiment described above, the support portion 270 includes: a contact portion 280 that contacts the shaft portion 60 in a radial direction about the axis AX, and a fixing portion 290 that fixes the contact portion 280. The contact portion 280 has: a first plate part 81, and a second plate part 82 that is positioned on the opposite side of the first plate part 81, sandwiching the shaft part 60. The first plate 81 has elasticity and presses the shaft 60 against the second plate 82.
With this configuration, wear associated with rotation of the reflection unit 31 can be reduced, as in the first embodiment. Further, the reflection unit 31 can be supported rotatably in a stable manner, and the cushioning property is excellent.
In addition, in the second embodiment, each of the contact surface 81b, the first inclined surface S1, and the second inclined surface S2 also contacts the shaft portion 60.
With this configuration, as in the first embodiment, the reflection unit 31 can be rotated stably while reducing contact resistance.
In the second embodiment, the fixing portion 290 has an insertion portion 293a into which the coupling portion 284 is inserted. The first plate portion 81, the second plate portion 82, and the coupling portion 284 are integrally formed.
With this configuration, the number of components can be reduced, and the contact portion 280 can be easily assembled to the fixing portion 290.
The width of the coupling portion 284 is narrower than the width of each of the first plate portion 81 and the second plate portion 82.
According to this structure, as described above, when the contact portion 280 is assembled to the fixing portion 290, the coupling portion 284 is easily inserted into the insertion portion 293 a. Further, the shaft portion 60 can be prevented from being excessively sandwiched by the first plate portion 81 and the second plate portion 82.
Specifically, the first plate 81 is a plate spring, and the second plate 83 is formed of the same material as the first plate 81.
According to this configuration, the sliding resistance of the shaft portion 60 with respect to the contact portion 280 can be made uniform, and therefore, the wear of the shaft portion 60 can be reduced.
The present invention is not limited to the above embodiments and drawings. Modifications (including deletion of constituent elements) may be added as appropriate within a range not changing the gist of the present invention.
The display unit 10 is not limited to a display unit using an LCD, and a display unit using an OLED (Organic Light-Emitting Diode) may be used. In addition, the display unit 10 may be a reflective display Device such as a DMD (Digital Micromirror Device) or an LCOS (Liquid Crystal On Silicon).
In addition, 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 reflection unit 31. How many folding mirrors 20 are used and how the optical path of the display light L is folded can be appropriately changed according to the design.
The projection target (light transmitting member) of the display light L is not limited to the windshield 3 of the vehicle 1, and may be a combination of a plate-like half mirror, a hologram element, and the like.
The type of vehicle 1 on which the HUD device 100 is mounted is not limited, and the HUD device can be applied to various vehicles such as a motorcycle and a motorcycle. The HUD device 100 may be mounted on a vehicle other than the vehicle 1, such as an airplane, a ship, or a snow mobile (power sled).
The above shows an example in which the contact portions 80, 280 are formed of stainless steel, but the selection of the material is not limited thereto. The contact portions 80 and 280 may be formed of a metal other than stainless steel, or may be formed of a resin.
The shape of the shaft 60 is not limited to the above example, and may be arbitrarily changed as long as it is substantially cylindrical.
The reflection unit 31 of the mirror unit 30 is preferably a concave mirror, but may be a mirror other than a concave mirror such as a flat mirror or a free-form surface mirror as long as it reflects the display light L.
In the above description, descriptions of well-known technical matters are appropriately omitted for easy understanding of the present invention.
Claims (8)
1. A head-up display device is characterized by comprising:
a display unit that emits display light for displaying an image;
a reflection unit that reflects the display light;
a shaft portion provided in the reflection portion and along an axis; and
a support portion that rotatably supports the shaft portion around the axis,
the support portion includes: a contact portion that contacts the shaft portion in a radial direction centered on the axis; and a fixing portion for fixing the contact portion,
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 against the second plate portion.
2. Head-up display device according to claim 1,
the first plate portion has a contact surface that contacts the shaft portion in the radial direction,
the second plate portion includes:
an opposing portion having an opposing surface that opposes the contact surface in the radial direction;
a first inclined portion connected to one end of the facing portion and having a first inclined surface inclined with respect to the facing surface; and
a second inclined portion connected to the other end of the facing portion and having a second inclined surface inclined with respect to the facing surface,
each of the contact surface, the first inclined surface, and the second inclined surface is in contact with the shaft portion.
3. Head-up display device according to claim 2,
the first plate portion and the second plate portion are separate bodies,
the second plate portion includes a bent portion formed by bending from the facing portion and having a surface orthogonal to the facing surface,
the fixing portion has a press-fitting portion into which the bent forming portion is press-fitted.
4. Head-up display device according to claim 1,
the contact portion has a bent coupling portion that couples an end of the first plate portion and an end of the second plate portion,
the fixing part has an insertion part into which the coupling part is inserted,
the first plate portion, the second plate portion, and the connecting portion are integrally formed.
5. Head-up display device according to claim 2,
the contact portion has a bent coupling portion that couples an end of the first plate portion and an end of the second plate portion,
the fixing part has an insertion part into which the coupling part is inserted,
the first plate portion, the second plate portion, and the connecting portion are integrally formed.
6. Head-up display device according to claim 4,
the width of the connecting portion is narrower than the width of each of the first plate portion and the second plate portion.
7. Head-up display device according to claim 5,
the width of the connecting portion is narrower than the width of each of the first plate portion and the second plate portion.
8. Head-up display device according to any one of claims 1 to 7,
the first plate portion is a plate spring,
the second plate portion is formed of the same material as the first plate portion.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020-090579 | 2020-05-25 | ||
| JP2020090579 | 2020-05-25 |
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| Publication Number | Publication Date |
|---|---|
| CN214201929U true CN214201929U (en) | 2021-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120373662.9U Active CN214201929U (en) | 2020-05-25 | 2021-02-10 | Head-up display device |
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| Country | Link |
|---|---|
| JP (1) | JPWO2021241494A1 (en) |
| CN (1) | CN214201929U (en) |
| DE (1) | DE112021002931T5 (en) |
| WO (1) | WO2021241494A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6107047B2 (en) * | 2012-10-24 | 2017-04-05 | 日本精機株式会社 | Head-up display device |
| JP6258607B2 (en) * | 2013-06-04 | 2018-01-10 | Ｎｓウエスト株式会社 | Head-up display device |
| JP6455268B2 (en) * | 2015-03-23 | 2019-01-23 | 日本精機株式会社 | Head-up display device |
| JP6836718B2 (en) | 2017-05-18 | 2021-03-03 | 日本精機株式会社 | Head-up display device |
| JP6505279B1 (en) * | 2018-03-19 | 2019-04-24 | カルソニックカンセイ株式会社 | Elastic body for supporting mirror of head-up display device |
-
2021
- 2021-02-10 CN CN202120373662.9U patent/CN214201929U/en active Active
- 2021-05-24 JP JP2022527026A patent/JPWO2021241494A1/ja active Pending
- 2021-05-24 DE DE112021002931.2T patent/DE112021002931T5/en active Pending
- 2021-05-24 WO PCT/JP2021/019596 patent/WO2021241494A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2021241494A1 (en) | 2021-12-02 |
| WO2021241494A1 (en) | 2021-12-02 |
| DE112021002931T5 (en) | 2023-03-30 |
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