JP2019162902A - Mirror support structure of head-up display device - Google Patents

Abstract

An object of the present invention is to mainly prevent an elastic member from being damaged by an impact load. A mirror support structure (20) includes rotating shafts (21, 22) projecting from a side surface (6a) of a mirror (6), bearings (23, 24) supporting the rotating shafts (21, 22), and a mirror (6). And an elastic member 26 that presses from one side of the axial direction 25 to the other side. Then, a regulating portion 61 for regulating the amount of movement of the rotating shafts 21 and 22 in the axial direction 25 is provided. [Selection] Fig. 9A

Description

  The present invention relates to a mirror support structure for a head-up display device.

  In recent years, mounting a head-up display device on a vehicle such as an automobile has been promoted.

  There are various types of head-up display devices, and a display device that can display driving information and a mirror that can reflect driving information (display image) from the display device toward the front of the passenger compartment are provided. Things exist.

  In the head-up display device having such a configuration, the driving information from the display device is reflected by the mirror toward the front of the passenger compartment, thereby generating a virtual image of the driving information in front of the passenger compartment, Driving information can be visually recognized without causing a large line-of-sight movement to the occupant driving facing.

  The head-up display device has a mirror support structure having a rotating shaft protruding from the side surface of the mirror, a bearing that supports the rotating shaft, and an elastic member that presses the mirror in the axial direction of the rotating shaft. (For example, refer to Patent Document 1).

Japanese Patent No. 5446837

  For example, when an excessive impact load is applied to the head-up display device while the vehicle is traveling, the elastic member may be plastically deformed and damaged when the mirror and the rotating shaft move laterally in the axial direction. .

  Therefore, the present invention mainly aims to solve the above-described problems.

In order to solve the above problems, the present invention provides:
A head-up display device comprising: a rotary shaft protruding from a side surface of the mirror; a bearing that supports the rotary shaft; and an elastic member that presses the mirror from one side to the other side in the axial direction of the rotary shaft. In the mirror support structure of
A restricting portion for restricting an amount of movement of the rotating shaft in the axial direction is provided.

  According to the present invention, the above configuration can prevent the elastic member from being damaged by an impact load.

It is a block diagram of a head-up display apparatus. It is a perspective view of the mirror support structure of FIG. It is a front view of the mirror of FIG. It is a side view of the mirror of FIG. It is the perspective view which looked at the bearing of FIG. 2 from the outer side. It is the perspective view which looked at the bearing of FIG. 2 from the inner side. FIG. 3 is a plan view of the bearing of FIG. 2. It is a perspective view of an elastic member. It is the elements on larger scale of the mirror which show the state which attached the rotating shaft to the bearing. It is a side view of the mirror which shows the state which mounted | wore the bearing with the rotating shaft. It is a partial enlarged front view of the mirror which shows the state which mounted | wore the bearing with the elastic member. It is a side view of the mirror which shows the state which attached the elastic member to the bearing. It is a side view of a mirror, (a) is a use position (maximum inclination position), (b) is a use position (standard position), (c) is a standby position. It is a longitudinal cross-sectional view of the rotating shaft and bearing of FIG. 6A. It is a longitudinal cross-sectional view of the rotating shaft and bearing of FIG. 6B.

Hereinafter, the present embodiment will be described in detail with reference to the drawings.
1 to 9B are for explaining this embodiment.

  <Configuration> The configuration of this embodiment will be described below.

  As shown in FIG. 1, a head-up display device 2 is mounted on a vehicle 1 such as an automobile.

  There are various types of head-up display devices 2. In this embodiment, the display device 4 that can display the driving information 3 and the driving information 3 (display image) from the display device 4 are displayed in front of the passenger compartment 1a. And a mirror 6 (reflecting member) that can be reflected toward the head.

  Here, the direction will be described with reference to a state in which the head-up display device 2 is mounted on the vehicle 1. The vehicle front-rear direction is substantially the front-rear direction X or the depth direction of the head-up display device 2, the vehicle width direction is substantially the width direction Y of the head-up display device 2, and the vertical direction of the vehicle 1 is substantially the vertical direction of the head-up display device 2. Z. However, since the head-up display device 2 may be mounted on the vehicle 1 in an inclined state, these directions may be shifted to some extent.

  The head-up display device 2 allows the occupant 7 who is driving facing the front to visually recognize the driving information 3 without causing a large line of sight movement. The head-up display device 2 is installed inside the instrument panel 12 provided in the front part of the passenger compartment 1a together with the casing 11 in a state where the display device 4 and the mirror 6 are accommodated in the casing 11. And the opening parts 13 and 14 which let the driving | running | working information 3 pass are provided in the upper surface of the casing 11 and the upper surface of the instrument panel 12. FIG. A transparent or translucent dustproof cover 15 or the like is installed in at least one of the openings 13 and 14 in a fixed state or an openable / closable state. The dust cover 15 may be flat, but may have a concave shape that is recessed downward as viewed from the side in order to prevent the dust cover 15 from being reflected on the front window 16.

  The driving information 3 passing through the openings 13 and 14 is reflected on the front window 16 or reflected on a dedicated reflector called a combiner installed on the front side of the openings 13 and 14 so that the passenger 7 It is visually recognized as a virtual image 18. In order to reflect the driving information 3, for example, a reflective film or a fine reflecting surface is provided on the front window 16 at least in a required range where the driving information 3 is projected.

  Driving information 3 is general information for driving assistance. The driving information 3 includes, for example, speed information, road information (for example, lane display, preceding vehicle display, oncoming vehicle display, pedestrian display, obstacle display, etc.), route information (for example, intersection information, Left and right turn display), destination information (for example, arrival time and mileage to the destination), traffic information, service information (for example, parking lot information, gas station information, neighboring facility information), And other indications.

  A display device such as a liquid crystal panel or an organic EL panel can be used for the display device 4. When a liquid crystal panel is used for the display device 4, an illumination device 4a serving as a backlight is provided on the back side of the liquid crystal panel. Further, the display device 4 may be a display device such as a projector using a DLP unit that reflects laser light with a micromirror. The display image (driving information 3) of the display device 4 is controlled by the control unit 4b.

  The passenger compartment 1a is a space in which the occupant 7 in the vehicle 1 is boarded. The mirror 6 is an optical component (reflecting member) such as a reflecting mirror. As the mirror 6, a plane mirror that reflects the operation information 3 (display image) from the display device 4 at an equal magnification, a curved mirror that reflects the enlarged image (concave mirror), or the like is used in an appropriate combination of one or a plurality (this) In the embodiment, two mirrors 6 are provided on the front and rear sides). For example, the mirror 6 can be directly fixed (fixed mirror) inside the casing 11 as in the right side of the figure. Moreover, the mirror 6 can be installed so that it can move with the mirror support structure 20 like the thing of the left side of a figure, for example (movable mirror).

  As shown in FIG. 2, in this embodiment, the mirror support structure 20 supports the mirror 6 (at least one of them) so as to be rotatable about the rotation shafts 21 and 22. The mirror support structure 20 includes rotating shafts 21 and 22 projecting from the side surface 6 a of the mirror 6, bearings 23 and 24 that support the rotating shafts 21 and 22, and the mirror 6 in the axial direction 25 of the rotating shafts 21 and 22. And an elastic member 26 that presses from one side to the other side. The axial direction 25 is installed almost horizontally in the width direction Y in a state of being mounted on the vehicle 1.

  Here, as shown in FIGS. 3A and 3B, the mirror 6 has a horizontally long shape extending substantially in the width direction Y, and is rotated in the vertical direction Z about the rotation shafts 21 and 22. The mirror 6 is intentionally non-rectangular or the like in order to prevent distortion in the driving information 3 when reflected on the front window 16 having a complicated three-dimensional curved surface shape. On the side surface 6 a of the mirror 6, a protruding portion 59 for adjusting the pressing surface 58 pressed by the elastic member 26 to be perpendicular to the axial direction 25 is formed to protrude as necessary.

  The side surface 6 a of the mirror 6 is a pair of opposite sides provided with the rotation shafts 21 and 22, and is, for example, a vertical side of the mirror 6. The rotary shafts 21 and 22 project from the both side surfaces 6a of the mirror 6 so as to be laterally located on the same axis. The rotary shafts 21 and 22 may be provided at any position on the side surface 6a of the mirror 6, but in this embodiment, the rotary shafts 21 and 22 are provided at an intermediate portion (in the vertical direction Z) of the side surface 6a of the mirror 6. The rotating shafts 21 and 22 may be provided separately from the mirror 6, but when the mirror 6 is made of resin, the rotating shafts 21 and 22 can be formed integrally with the mirror 6.

  The bearings 23 and 24 may have different structures on one side (pressing side) where the elastic member 26 is provided and on the other side (pressed side) where the elastic member 26 is not provided. For example, the one-side bearing 23 is as shown in FIGS. 4A to 4C.

  The bearing 23 on one side includes, for example, a mounting seat portion 51 having a screw hole 51 a for mounting on the casing 11, and a shaft support portion 52 for supporting the rotating shaft 21 on the mounting seat portion 51. . The shaft support portion 52 has an open portion 52b on the front side (upper side) and a bearing groove 52c on the back side (lower side), and is formed on the mounting seat portion 51 at an interval at which the rotary shaft 21 can be supported. A pair of shaft support walls 52a is provided.

  A spring receiving portion 54 for attaching the elastic member 26 extends toward the mounting direction 28 of the elastic member 26 at the tip end portion of the shaft support wall 52a on the mirror 6 side. The mounting direction 28 is a direction intersecting with the axial direction 25 (in this embodiment, it is below the vertical direction Z).

  The bearing 23 may be provided with a locking portion 45 (locking claw portion 45b) for the elastic member 26. The bearing 23 may be provided with reinforcing ribs 56 such as a first reinforcing rib 56a extending in the axial direction 25, a second reinforcing rib 56b having a surface orthogonal to the axial direction 25, and a third reinforcing rib 56d.

  On the other hand, the elastic member 26 is as shown in FIG.

  The elastic member 26 is provided on one side surface 6a (pressing side) of the mirror 6 and presses and biases the mirror 6 toward the other side surface 6a (pressed side), so that the mirror 6 moves due to vehicle vibration. This prevents the driving information 3 (display image) from blurring. The elastic member 26 may be provided on either side, but in this embodiment, the elastic member 26 is installed on the arm portion 37 side (drive side).

  The elastic member 26 is a leaf spring 26 a that can be mounted in the direction intersecting the axial direction 25 from the outside with the rotary shaft 21 supported on the bearing 23. The leaf spring 26 a can be attached to the bearing 23 and a pressing portion 31 on one end side that can be inserted into the gap 27 (FIG. 2) between the mirror 6 and the bearing 23 and press the mirror 6 in the axial direction 25. The attachment part 32 on the other end side has a substantially U-shaped part in a side view when the intermediate folding part 33 is folded in half. The substantially U-shaped portion of the leaf spring 26a in a side view is composed of a base portion 31a of the pressing portion 31, a folded portion 33, and a base portion 32a of the mounting portion 32, and the bearing 23 (the upper spring receiving portion 54) is 3 A mounting part (clamping part or clamping part) 29 that can be clamped (or clamped on both sides of the bearing 23) from the direction is formed.

  The pressing portion 31 includes a plurality of elastic pressing pieces 41 and 42 having different lengths that can press the mirror 6 in the axial direction 25. The first elastic pressing piece 41 and the second elastic pressing piece 42 are formed in a bifurcated shape so as to sandwich both side portions of the rotating shaft 21 (in the front-rear direction X), and the pressing portion 31 is viewed from the front or the back. In this state, they are extended substantially parallel to each other in the mounting direction 28 (downward). As a result, the first elastic pressing piece 41 and the second elastic pressing piece 42 are on the opposite sides of the rotary shaft 21 (with the center in between) so as to be substantially along the side surface 6a of the mirror 6 (inclined). ) Press the diagonally upper position and the diagonally lower position. The elastic pressing pieces 41 and 42 are arranged in order from the side closer to the folded portion 33, respectively, in parallel portions 41a and 42a, bent portions 41b and 42b, inclined portions 41c and 42c, reverse bent portions 41d and 42d, and a return portion 41e. , 42e continuously.

  The pressing portion 31 may include another elastic pressing piece 43 that can hold the rotating shaft 21 in the mounting direction 28 with respect to the bearing 23 of the leaf spring 26a.

  The attachment portion 32 may be provided with a fixing portion 44 that can be fixed to the bearing 23 (the upper portion thereof, etc.) at a portion (base portion 32a) on the folded portion 33 side. The fixing portion 44 is an elastic piece having a folding width expanding portion 44a, a bending portion 44b, an inclined portion 44c, a reverse bending portion 44d, and a returning portion 44e successively from the side closer to the folding portion 33.

  A locking hole 45 a into which the locking claw 45 b of the bearing 23 is inserted and locked may be provided as the locking part 45 on the folded part 33 side of the pressing part 31.

  The attachment portion 32 may be provided with a screw fixing portion 46. The screw fixing portion 46 may be a hat type having a top portion 46a, left and right leg portions 46b, and left and right foot portions 46c continuously. Screw holes 46d for screwing to the casing 11 may be provided in the left and right feet 46c. The screw fixing part 46 is integrally bent at the lower part of the extension part 32 b of the attachment part 32. A notch 47 or the like for avoiding interference with another elastic pressing piece 43 may be provided between the extension portion 32 b and the screw fixing portion 46.

  Then, after the rotating shaft 21 of the mirror 6 is pivotally supported on the bearing 23 as shown in FIGS. 6A and 6B, the elastic member 26 is mounted on the bearing 23 from the outside as shown in FIGS. 7A and 7B. As a result, the mirror 6 can be rotated between the use position 34 and the standby position 35 as shown in FIGS.

  The use position 34 is the position of the mirror 6 when the head-up display device 2 is used. At the use position 34, the display height can be adjusted so that the driving information 3 is displayed at the optimum position according to the physique (or eye height) of the occupant 7, and the mirror 6 is moved up and down. It is slightly rotated in the state of being relatively laid down with respect to the direction Z (rotation between FIG. 8A and FIG. 8B).

  The standby position 35 is the position of the mirror 6 when the head-up display device 2 is not used. At the standby position 35, the mirror 6 stands in the vertical direction Z with respect to the use position 34 (FIG. 8C). By setting the mirror 6 to the standby position 35, the external light incident on the inside of the casing 11 is not retro-reflected toward the display device 4, so that the display device 4 can be prevented from being damaged by the external light retro-reflection. Even when the head-up display device 2 is used, when the amount of incident external light into the casing 11 is large, the mirror 6 is temporarily moved to the standby position 35 so that the external light is not retroreflected. it can. In particular, when a concave mirror is used for the mirror 6, since external light is collected by the concave mirror and applied to the display device 4, the display device 4 is greatly damaged. Evacuating to 35 is effective.

  Further, as shown in FIG. 2, the mirror 6 (movable mirror) supported by the mirror support structure 20 can be automatically moved (rotated) using the mirror movable mechanism 36 (or mirror rotating mechanism). Like that.

  The mirror movable mechanism 36 may be a link mechanism or a gear mechanism. In this embodiment, the mirror movable mechanism 36 includes an arm portion 37 attached to the rotating shaft 21 and an actuator 38 that rotates the rotating shaft 21 and the mirror 6 via the arm portion 37. When the mirror movable mechanism 36 is a link mechanism, the arm portion 37 is moved by an actuator 38 such as a cylinder.

  When the mirror movable mechanism 36 is a gear mechanism, the arm portion 37 is, for example, a gear such as a sector gear that extends in the radial direction of the rotating shaft 21 and has gear teeth 37a at the tip. The sector gear is formed at an angle (approximately 25 ° to 30 °) that covers at least the normal rotation range between the standby position 35 and the use position 34. A motor is used for the actuator 38. The motor rotates the arm portion 37 by meshing a gear such as a drive gear 38a attached to the output shaft with the gear teeth 37a of the sector gear. Rotating members (or shaft attachment members) such as the arm portion 37 and the driving gear 38a constitute a driving force transmission portion 35a (or a driving force transmission mechanism). Contrary to the above, the arm portion 37 may be attached to the output shaft of the motor, and the drive gear 38a may be attached to the rotating shaft 21. The arm portion 37 is biased in one direction of rotation toward the use position 34 or the standby position 35 by the return spring 39. The return spring 39 also performs loose play between the sector gear and the drive gear 38a. The motor is fixed to the casing 11 via the mounting bracket 40.

  In this embodiment, the mirror support structure 20 is configured as follows for the head-up display device 2 as described above.

(1) As described above, the mirror support structure 20 rotates the rotating shafts 21 and 22 that protrude from the side surface 6 a of the mirror 6, the bearings 23 and 24 that support the rotating shafts 21 and 22, and the mirror 6. And an elastic member 26 that presses from one side of the axial direction 25 of the shafts 21 and 22 to the other side.
And as shown to FIG. 9A and FIG. 9B, the control part 61 which controls the movement amount to the axial direction 25 of the rotating shafts 21 and 22 is provided.

  Here, the restricting portion 61 is for protecting the elastic member 26 against an impact load. When the rotary shafts 21 and 22 are largely moved in the axial direction 25 by an impact load, the elastic member 26 is damaged by plastic deformation. The impact load is the maximum load (about 50 G) that is assumed to act during the traveling of the vehicle 1. The restricting portion 61 may be anything as long as it can restrict the lateral movement of the rotating shafts 21 and 22 so that the elastic member 26 does not plastically deform with respect to the impact load. Further, the restricting portion 61 may strictly restrict the rotation shafts 21 and 22 so that the rotation shafts 21 and 22 hardly move, or allows the rotation shafts 21 and 22 to move to some extent within a range in which the elastic member 26 is not damaged. You may regulate it loosely as you can.

  (2) The restricting portion 61 may include a protrusion 62 projecting from the outer peripheral surface of the rotary shafts 21 and 22 and a receiving portion 63 provided inside the bearings 23 and 24 and receiving the protrusion 62. good.

  Here, the protrusion 62 is provided on the outer peripheral surface of the portion that is pivotally supported by the bearings 23 and 24 of the rotary shafts 21 and 22. The protrusion 62 can be formed integrally with the rotating shafts 21 and 22.

  The receiving portion 63 receives the movement of the protruding portion 62 in the axial direction 25, and the protruding portion 62 is located at a position that matches the protruding portion 62 when the rotary shafts 21 and 22 are pivotally supported on the bearings 23 and 24. Are provided in a size and shape that can be fitted.

When the lateral movement of the rotating shafts 21 and 22 is strictly restricted, the length of the receiving portion 63 in the axial direction 25 is made substantially the same as the length of the protruding portion 62 in the axial direction 25.
Further, when the lateral movement of the rotating shafts 21 and 22 is loosely restricted, the length of the receiving portion 63 in the axial direction 25 is longer than the length of the protruding portion 62 in the axial direction 25 within an allowable range. In this embodiment, the rotary shafts 21 and 22 are strictly regulated so as to hardly move laterally (FIG. 9A).

  In terms of structure, the restricting portion 61 can also be provided with the protruding portion 62 on the bearings 23 and 24 side and the receiving portion 63 on the rotating shafts 21 and 22 side. In terms of structure, the protrusion 62 is provided at a position outside the bearings 23 and 24 on the rotary shafts 21 and 22, and the receiving part 63 is set on the end surface of the bearings 23 and 24 on the protrusion 62 side. It is also possible to install the restricting portion 61 outside the bearings 23 and 24. Accordingly, the restricting portion 61 restricts the lateral movement of the rotating shafts 21 and 22 in one direction (the elastic member 26 side).

  (3) The receiving part 63 is good also as the circular-arc-shaped groove | channel 63a extended in the circumferential direction of the rotating shafts 21 and 22. FIG.

  Here, the arc-shaped groove 63a has at least the same depth as the length of the protrusion 62 and extends in the circumferential direction. The receiving part 63 can be a circular groove. Further, when the rotary shafts 21 and 22 and the mirror 6 do not circulate when the head-up display device 2 is used (or the normal rotation range of the mirror 6 is one rotation or less), the receiving unit 63 is at least normally rotated. What is necessary is just to make it the circular-arc-shaped groove | channel 63a which covers the rotation range of the projection part 62 in the range. In this embodiment, the arc-shaped groove 63a is formed at the position of the bearing groove 52c located on the back side in the mounting direction 28 of the rotating shaft 21 and the elastic member 26 with respect to the bearing 23 (FIGS. 4A to 4C). In this embodiment, the arc-shaped groove 63 a of the receiving portion 63 is provided at the central position in the axial direction 25 of the bearing groove 52 c of the bearing 23.

  The protrusion 62 fitted in the arc-shaped groove 63a can be a pin, for example. In this embodiment, the protrusion 62 is, for example, an arc-shaped rib or the like as viewed from the axial direction 25 (shorter in the circumferential direction than the arc-shaped groove 63a) so as to obtain a strength capable of withstanding an impact load. ing. The protrusion 62 is provided on the lower side of the rotating shaft 21 substantially downward.

  (4) The restricting portion 61 may be installed at any position of the one-side bearing 23 provided with the elastic member 26 and the other-side bearing 24 pressed by the elastic member 26.

  In this embodiment, the restricting portion 61 is provided at the position of the bearing 23 on one side where the elastic member 26 is provided. On the other hand, as shown by the phantom line in FIG. 3A, a protrusion 62 is provided on the other rotation shaft 22 and the other bearing 24 has a receiving portion 63 (arc-shaped) similar to the bearing 23 on one side. The groove 63a) may be provided.

  <Operation> The operation of this embodiment will be described below.

  The head-up display device 2 reflects the driving information 3 from the display device 4 toward the front of the passenger compartment 1a by the mirror 6, thereby generating a virtual image 18 of the driving information 3 in front of the passenger compartment 1a. The driving information 3 can be visually recognized without causing the occupant 7 driving facing the front to move a large line of sight.

  At this time, by providing a mirror 6 in the middle of the optical path and bending the optical path, the driving information 3 from the display device 4 (compared to directing the driving information 3 from the display device 4 directly to the front of the passenger compartment 1a). This makes it possible to lengthen the optical path and to enlarge and display the driving information 3. As a result, the head-up display device 2 can display the driving information 3 at a distance, increase the angle of view of the driving information 3, and the like.

  The mirror 6 is rotatably supported by the mirror support structure 20 so that the angle can be changed between the use position 34 and the standby position 35. The mirror 6 is pressed and urged from the pressing side toward the pressed side by the elastic member 26 in order to prevent the influence of vehicle vibration. However, when an impact load is applied to the head-up display device 2 while the vehicle 1 is traveling, the elastic member 26 may be damaged.

  <Effect> Therefore, according to this embodiment, the following effects can be obtained.

  (Effect 1) A restricting portion 61 that restricts the amount of movement of the rotating shafts 21 and 22 in the axial direction 25 is provided. As a result, when an impact load is applied to the head-up display device 2, the restricting portion 61 provided on the mirror support structure 20 moves the rotating shafts 21 and 22 of the mirror 6 greatly in the axial direction 25 (lateral movement or horizontal blurring). ) Do not regulate. Therefore, the elastic member 26 that presses the rotating shafts 21 and 22 to one side (the other side) in the axial direction 25 is protected by the restricting portion 61 so as not to be excessively deformed in the opposite direction to the pressing direction by an impact load. Therefore, damage due to plastic deformation of the elastic member 26 can be prevented.

  (Effect 2) The restricting portion 61 is composed of a protruding portion 62 protruding from the outer peripheral surface of the rotary shafts 21 and 22 and a receiving portion 63 provided inside the bearings 23 and 24. Accordingly, the lateral movement of the rotating shafts 21 and 22 in both directions can be reliably restricted by the fitting of the protrusion 62 and the receiving portion 63. Further, the restricting portion 61 can be hidden between the rotary shafts 21 and 22 and the bearings 23 and 24 so as not to be visible from the outside. Furthermore, since the restricting portion 61 is not exposed to the outside, the restricting portion 61 can be protected from external force.

  (Effect 3) It is good also considering the receiving part 63 as the circular-arc-shaped groove | channel 63a extended in the circumferential direction. As a result, the restricting portion 61 can permit the rotation of the rotating shafts 21 and 22. Further, if the arc-shaped groove 63a is provided in accordance with the movable range (between the use position 34 of the mirror 6 and the standby position 35) of the rotary shafts 21 and 22, the rotary shafts 21 and 22 and the mirror 6 are provided. The rotation can be regulated by the regulating unit 61.

  (Effect 4) The restricting portion 61 is provided at either one of the bearing 23 on the one side and the bearing 24 on the other side. Accordingly, the elastic member 26 can be reliably protected at a position close to the elastic member 26 by providing the restricting portion 61 in the bearing 23 on one side. In addition, by providing the restricting portion 61 on the other bearing 24, restrictions on the installation position of the restricting portion 61 are reduced, so that the degree of freedom in design around the bearings 23 and 24 can be increased.

2 Head-up display device 6 Mirror 20 Mirror support structure 21 Rotating shaft 22 Rotating shaft 23 Bearing 24 Bearing 25 Axial direction 26 Elastic member 61 Restricting portion 62 Protruding portion 63 Receiving portion 63a Arc-shaped groove

In order to solve the above problems, the present invention provides:
A rotating shaft projecting from both side surfaces of the mirror, a bearing that rotatably supports the rotating shaft in the axial direction, and an elastic member that presses the mirror from one side to the other side in the axial direction of the rotating shaft; In the mirror support structure of the head-up display device,
A restriction portion is provided between the rotation shaft and the bearing to restrict the amount of movement of the rotation shaft to at least the side opposite to the pressing direction of the elastic member .

Claims (4)

A head-up display device comprising: a rotary shaft protruding from a side surface of the mirror; a bearing that supports the rotary shaft; and an elastic member that presses the mirror from one side to the other side in the axial direction of the rotary shaft. In the mirror support structure of
A mirror support structure for a head-up display device, characterized in that a restricting portion for restricting an amount of movement of the rotating shaft in the axial direction is provided. In the mirror support structure of the head-up display device according to claim 1,
The restricting portion includes a protrusion that protrudes from the outer peripheral surface of the rotating shaft, and a receiving portion that is provided inside the bearing and receives the protrusion. Construction. In the mirror support structure of the head-up display device according to claim 2,
The mirror support structure for a head-up display device, wherein the receiving portion is an arc-shaped groove extending in a circumferential direction of the rotating shaft. In the mirror support structure of the head-up display device according to any one of claims 1 to 3,
The restricting portion is installed at any position of the bearing on one side provided with the elastic member and the bearing on the other side pressed by the elastic member, and the mirror support structure of the head-up display device .