JP2007086226A - Head-up display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase a moving amount of a virtual image displayed by projecting display light onto a windshield glass.
A control device 24 irradiates display light from a display unit 22 by turning on an ignition switch, operates an actuator 40 in the display light irradiation state, and rotates a rotating shaft 34 having a mirror 30 disposed on an upper end 30A. It is designed to rotate to the rear of the vehicle around the center of rotation. As a result, when the ignition switch is turned on, the virtual image 54 moves greatly upward, and is displayed on the combiner portion 50A of the windshield glass 50 so as to gradually move upward from the tip end portion 54A. On the other hand, when the ignition switch is turned off, the mirror 30 rotates rearward in the display light irradiation state, and the virtual image 54 is erased so as to gradually move downward from the lower end.
[Selection] Figure 1

Description

  The present invention relates to a head-up display device that displays a virtual image by projecting display light emitted from a display unit onto a windshield glass by a light reflecting portion.

Patent Document 1 below discloses a structure in which the angle of a reflecting mirror that reflects display light emitted from a display device can be changed by a driving unit. In this structure, when the ignition switch is turned off, the reflecting means is moved by the driving means to a position where the sunlight is not reflected by the display device, and when the ignition switch is turned on, the reflecting mirror can be visually recognized by the driving means. It is designed to move to the correct position.
JP 2004-90713 A

  However, in the structure of Patent Document 1, when the ignition switch is turned on, the reflecting mirror is moved to a position where it can be visually recognized, and then the display light is emitted from the display. In addition, the vertical position of the virtual image is adjusted by rotating the reflecting mirror around the rotation axis that is arranged in the center in the substantially vertical direction of the reflecting mirror along the vehicle width direction. For this reason, the virtual image displayed by projecting the display light from the display unit onto the windshield glass (also referred to as a windshield) by the reflecting mirror does not move greatly in the vertical direction of the vehicle body.

  In view of the above facts, an object of the present invention is to provide a head-up display device capable of increasing the amount of movement of a virtual image displayed by projecting display light onto a windshield glass.

  The head-up display device of the present invention according to claim 1 is a head-up display device that displays a virtual image by projecting display light irradiated from a display means onto a windshield glass by a light reflection unit, wherein the light reflection unit The rotation shaft for performance arranged in the vehicle width direction at the upper end of the display, the rotation means for rotation for rotating the light reflecting portion around the rotation shaft for performance, and display light from the display means And a control means for rotating the light reflecting portion by the effect rotating means in the irradiated state.

  The control means uses the effect rotating means in a state in which the display light is irradiated from the display means, and the light is centered on the effect rotation axis arranged in the vehicle width direction at the upper end portion of the light reflecting portion. Rotate the reflector. As a result, the virtual image displayed by projecting the display light irradiated from the display means onto the windshield glass by the light reflecting portion largely moves in the vertical direction of the vehicle body.

  According to a second aspect of the present invention, in the head-up display device according to the first aspect, the eye-point adjusting rotary shaft is disposed at the longitudinal center of the light reflecting portion along the vehicle width direction. And eye point adjusting rotating means for rotating the light reflecting portion around the eye point adjusting rotating shaft.

  By the eye point adjusting rotating means, the light reflecting portion is rotated around the eye point adjusting rotating shaft disposed in the longitudinal center of the light reflecting portion along the vehicle width direction. As a result, the virtual image displayed by projecting the display light irradiated from the display means onto the windshield glass by the light reflecting portion slightly moves in the vertical direction of the vehicle body.

  According to the first aspect of the present invention, the amount of movement of the virtual image displayed can be increased by projecting the display light onto the windshield glass.

  According to the second aspect of the present invention, the position of the virtual image can be adjusted to a position that matches the eye point.

  A head-up display device according to a first embodiment of the present invention will be described with reference to FIGS.

  In the figure, the arrow UP indicates the vehicle body upward direction, the arrow UP in the figure indicates the vehicle body upward direction, and the arrow IN in the figure indicates the vehicle width inside direction.

  As shown in FIG. 1, a projector unit 10 as a head-up display device in the present embodiment is disposed on the lower surface 14 </ b> A side of an upper portion 14 in an instrument panel (also called a dashboard) 12 of an automobile.

  An opening 18 is formed in the upper wall portion 16 </ b> A of the case 16 constituting the outer peripheral portion of the projector unit 10. In addition, an opening 20 is formed in a portion of the instrument panel 12 above the opening 18. In addition, the opening part 18 and the opening part 20 are arrange | positioned along each vehicle longitudinal direction in the longitudinal direction.

  The inner surface of the rear wall portion 16B of the case 16 is a display means such as a fluorescent display tube (VED) in which a display and a light source are integrated, or a liquid crystal display (LCD) in which the display and the light source are separated. A control device 24 to which the display unit 22 is attached is disposed, and the control device 24 is fixed to the rear wall portion 16B via a base 26. Further, a mirror 30 as a light reflecting portion is disposed on the inner surface of the front wall portion 16 </ b> C in the case 16, and the mirror 30 is attached to the front wall portion 16 </ b> C via a bracket 32.

  As shown in FIG. 2, the mirror 30 is formed of a long rectangular plane mirror, and the longitudinal direction thereof is arranged along the vehicle width direction. In addition, at the both ends of the upper end portion 30A of the mirror 30 in the vehicle width direction, an effect rotation shaft 34 is erected outward in the vehicle width direction. In other words, these effect rotating shafts 34 are respectively provided on the upper end portions of the both side walls 30B in the vehicle width direction of the mirror 30 so as to extend outward in the vehicle width direction, and are formed in through holes formed in the left and right brackets 32, respectively. 36 is rotatably inserted.

  Therefore, the mirror 30 can rotate to the rear of the vehicle body (in the direction of arrow A in FIG. 2) and the front of the vehicle body (in the direction of arrow B in FIG. 2) with the production rotation shaft 34 arranged at the upper end 30A of the mirror 30 as the rotation center. It has become.

  A gear 42 that constitutes a part of the actuator 40 serving as the effect rotating means is fixed to the front side surface 30D of the inner end portion in the vehicle width direction of the lower end portion 30C of the mirror 30. The gear 42 is curved along an arc centered on the effect rotation shaft 34. A gear 46 meshes with the gear 42, and the gear 46 is fixed to a rotation shaft 44 </ b> A of a motor 44 that constitutes a part of the actuator 40.

  Accordingly, when the rotating shaft 44A of the motor 44 rotates, the mirror 30 moves to the rear of the vehicle (in the direction of arrow A in FIG. 2) and the front of the vehicle (in the direction of arrow B in FIG. 2) with the production rotating shaft 34 as the rotation center. It is designed to rotate.

  The motor 44 is fixed to the inner surface of the lower wall portion 16D of the case 16 via a bracket (not shown). The motor 44 is connected to the control device 24 via an electric wire (not shown), and the rotation of the motor 44 is controlled by a microcomputer provided in the control device 24.

  As shown in FIG. 1, a windshield glass 50 is disposed above the dashboard 14, and the windshield glass 50 is inclined from the lower front side of the vehicle body toward the upper rear side of the vehicle body.

  Further, a combiner (semi-transparent mirror) 51 is enclosed in a part of the windshield glass 50, and display light is transmitted through the openings 18 and 20 into the combiner part 50A of the windshield glass 50 in which the combiner 51 is enclosed. By projecting, the virtual image 54 is displayed in front of the vehicle body of the windshield glass 50, and the virtual image 54 can be visually recognized by the driver's eyes 52.

  Further, the control device 24 emits display light from the display unit 22 when the ignition switch is turned on, and rotates the mirror 30 in the direction of arrow A in this display light irradiation state.

  Accordingly, the mirror 30 is moved from the standby position indicated by the two-dot chain line in FIG. 1 (the position where the mirror 30 is rotated forward of the vehicle body around the effect rotation shaft 34) to the use position indicated by the solid line in FIG. 1, the virtual image 54 of the image 55 displayed on the display unit 22 is moved from a lower position indicated by a two-dot chain line in FIG. 1 to a solid line shown in FIG. Move to the position of. For this reason, the virtual image 54 is displayed on the combiner portion 50A of the windshield glass 50 so as to gradually move upward from the distal end portion 54A, and finally the windshield glass 50 as shown by the solid line in FIG. The entire virtual image 54 is displayed on the combiner unit 50A, so that an effect can be obtained. For this reason, the rotation shaft 34 is used as the production rotation shaft 34.

  On the other hand, the control device 24 rotates the mirror 30 forward (in the direction of arrow B) in the display light irradiation state by turning off the ignition switch, and then turns off the display unit 22. For this reason, when the ignition switch is turned off, the virtual image 54 gradually moves downward from the lower end portion 54B from the state where the entire image is displayed on the combiner portion 50A of the windshield glass 50 as shown by the solid line in FIG. It is supposed to be erased.

  In the case 16 of the projector unit 10, a light shielding plate 16 </ b> E is attached to prevent the upper and lower parts of the display unit 22 from being displayed as virtual images when the mirror 30 rotates. Yes.

  The ignition switch on includes not only when the ignition switch is switched from ACC to ON, but also when the ignition switch is switched from OFF to ACC. The ignition switch is switched off only when the ignition switch is switched from ON to ACC. In addition, any of them can be selected depending on the startup specification of the head-up display, including when the ACC is turned off.

  Next, the operation of this embodiment will be described.

  In the present embodiment, the display light from the display unit 22 in the projector unit 10 is projected onto the combiner unit 50A of the windshield glass 50 through the opening 18 of the case 16 and the opening 20 of the dashboard 14 by the mirror 30. Since the virtual image 54 is displayed in front of the vehicle body of the windshield glass 50, the virtual image 54 can be visually recognized by the driver's eyes 52.

  Further, the control device 24 irradiates display light from the display unit 22 by turning on the ignition switch, and in this display light irradiation state, the control device 24 is configured with the effect rotation shaft 34 disposed at the upper end 30A as a rotation center. 1 from a standby position indicated by a two-dot chain line (a position where the mirror 30 is rotated forward about the production rotation shaft 34), and a use position indicated by a solid line in FIG. 1 (the mirror 30 is provided about the production rotation shaft 34). Rotate to the rear of the vehicle).

  As a result, when the ignition switch is turned on, the virtual image 54 of the image 55 displayed on the display unit 22 moves greatly from the lower position shown by the two-dot chain line in FIG. 1 to the position of the solid line shown in FIG.

  For this reason, the virtual image 54 is displayed on the combiner portion 50A of the windshield glass 50 so as to gradually move upward from the distal end portion 54A, and finally the windshield glass 50 as shown by the solid line in FIG. The entire virtual image 54 is displayed on the combiner unit 50A. Therefore, it appears to the driver's eyes 52 that the virtual image 54 rises from the lower side of the vehicle body to the upper side of the vehicle body in a space where nothing can be seen.

  On the other hand, when the ignition switch is turned off, the control device 24 is in the display light irradiation state, and the use position shown by the solid line in FIG. 1 to a standby position (a position where the mirror 30 has rotated to the front of the vehicle around the production rotation shaft 34) shown in FIG. The display unit 22 is turned off. As a result, when the ignition switch is turned off, the virtual image 54 is erased so as to gradually move downward from the lower end portion 54B from the state where the entire image is displayed as shown by the solid line in FIG.

  Thus, in this embodiment, the moving amount of the virtual image 54 displayed by projecting the display light on the windshield glass 50 in the vertical direction of the vehicle body is large, and the effect is improved.

  Further, in the present embodiment, display light is projected onto the windshield glass 50 even when a segment display display means that makes it difficult to move and display the virtual image 54 or a composite display means of dot matrix display and segment display is used. The displayed virtual image 54 can be easily moved in the vertical direction of the vehicle body.

  In the present embodiment, the vertical position of the virtual image 54 displayed on the front side of the windshield glass 50 is adjusted by adjusting the stop position when the mirror 30 rotates rearward (in the direction of arrow A in FIG. 2). Can be adjusted to a position that matches the eye point that is easily visible with the driver's eyes 52. For this reason, the projector unit 10 of this embodiment can be shared with an optical system rotation mechanism for viewing zone adjustment.

  Next, a second embodiment of the head-up display device according to the present invention will be described with reference to FIG.

  In addition, about the same member as 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  In the present embodiment, instead of the gear 42 in the first embodiment, as shown in FIG. 3, a circular gear 48 constituting a part of the actuator 40 is fixed to the effect rotation shaft 34. Is connected to a gear 46 fixed to the rotating shaft 44 </ b> A of the motor 44.

  Therefore, also in this embodiment, the same effect as the first embodiment can be obtained. Further, since the circular gear 48 constituting a part of the actuator 40 is fixed to the effect rotation shaft 34, the configuration is simplified.

  Next, a third embodiment of the head-up display device according to the present invention will be described with reference to FIGS.

  In addition, about the same member as 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 4, in this embodiment, the mirror unit 60 is disposed on the inner surface of the front wall portion 16 </ b> C in the case 16 of the projector unit 10, and the mirror unit 60 is attached to the front wall portion 16 </ b> C via a bracket 62. It has been.

  As shown in FIG. 5, the mirror unit 60 includes a long rectangular substrate (base plate) 64, and the substrate 64 is arranged with its longitudinal direction along the vehicle width direction. In addition, at the both ends in the vehicle width direction of the upper end portion 64A of the substrate 64, an effect rotation shaft 66 is erected outward in the vehicle width direction. That is, these effect rotation shafts 66 are respectively provided on the upper ends of the vehicle width direction side wall portions 64B of the substrate 64 so as to stand outward in the vehicle width direction, and are formed in through holes formed in the left and right brackets 62, respectively. 68 is rotatably inserted.

  Accordingly, the mirror unit 60 rotates to the rear of the vehicle body (in the direction of arrow A in FIG. 5) and the front of the vehicle body (in the direction of arrow B in FIG. 5) around the rotation shaft 66 for presentation arranged at the upper end portion 64A of the substrate 64. It is possible.

  A rear end 72A of a coil spring 72 that constitutes a part of the actuator 70 as the effect rotating means is connected to the front side surface 64D of the inner end portion in the vehicle width direction at the lower end portion 64C of the substrate 64 of the mirror unit 60. .

  As shown in FIG. 4, the front end 72 </ b> B of the coil spring 72 is connected to a bracket 74 fixed to the front wall portion 16 </ b> C of the case 16.

  As shown in FIG. 5, a front end 76 </ b> A of a wire 76 constituting a part of the actuator 70 is connected to the rear side surface 64 </ b> E of the inner end portion in the vehicle width direction at the lower end portion 64 </ b> C of the substrate 64 of the mirror unit 60. The rear end 76 </ b> B of the wire 76 is wound around a pulley 78, and the pulley 78 is fixed to a rotation shaft 80 </ b> A of a motor 80 that constitutes a part of the actuator 70.

  Accordingly, when the rotating shaft 80A of the motor 80 rotates, the wire 76 is wound around the pulley 78, and the substrate 64 resists the urging force of the coil spring 72, and the rear of the vehicle body (with the effect rotating shaft 66 as the rotation center). It rotates in the direction of arrow A in FIG. Further, when the rotating shaft 80A of the motor 80 rotates in the reverse direction, the wire 76 is fed out from the pulley 78, and the board 64 is moved forward of the production center around the effect rotating shaft 66 by the urging force of the coil spring 72 (see FIG. 5). It rotates in the direction of arrow B).

  The motor 80 is fixed to the inner surface of the lower wall portion 16D of the case 16 via a bracket (not shown). The motor 80 is connected to the control device 24 via an electric wire (not shown), and the rotation of the motor 80 is controlled by a microcomputer provided in the control device 24.

  A mirror 82 as a light reflecting portion is disposed on the vehicle body rear side surface 64F of the substrate 64 in the mirror unit 60, and the mirror 82 is attached to the vehicle body rear side surface 64F of the substrate 64 via a pair of left and right brackets 84. .

  The mirror 82 is composed of a long rectangular plane mirror, and its longitudinal direction is arranged along the vehicle width direction. In addition, an eye point adjusting rotary shaft 86 is erected at the center in the vertical direction of the both side wall portions 82A in the vehicle width direction of the mirror 82, respectively. The shaft is rotatably inserted into through holes 88 formed in the left and right brackets 84, respectively.

  Therefore, the mirror 82 can rotate to the rear of the vehicle (in the direction of arrow C in FIG. 5) and the front of the vehicle (in the direction of arrow D in FIG. 5) with the eye point adjusting rotary shaft 86 as the center of rotation.

  A circular gear 90 constituting a part of the eye point adjusting rotating means is fixed to the eye point adjusting rotating shaft 86 on the outer side in the vehicle width direction of the mirror 82. The gear 48 is connected via an idle gear 96 to a gear 94 fixed to a rotating shaft 92A of a motor 92 that constitutes a part of the eye point adjusting rotating means.

  Accordingly, when the rotation shaft 92A of the motor 92 rotates, the mirror 82 has the eyepoint adjustment rotation shaft 86 as the rotation center, and the vehicle body rear (direction of arrow C in FIG. 5) and vehicle body front (direction of arrow D in FIG. 5). It has come to rotate to.

  The motor 92 is fixed to the vehicle body rear side surface 64F of the substrate 64 via a bracket (not shown). The motor 92 is connected to the control device 24 via an electric wire (not shown), and its rotation is controlled by a microcomputer provided in the control device 24.

  As shown in FIG. 6, a mirror angle adjustment switch 98 is disposed near the meter 12 </ b> A on the instrument panel 12. The mirror angle adjustment switch 98 is connected to the control device 24 via an electric wire (not shown). Accordingly, by operating the mirror angle adjustment switch 98, the rotation shaft 92A of the motor 92 can be rotated by a predetermined amount in a predetermined direction.

  Further, when the ignition switch is turned on, the control device 24 turns on the motor 80 in the display light irradiation state, and moves the mirror unit 60 to the standby position indicated by the two-dot chain line in FIG. 4 to the use position (the position where the mirror unit 60 is rotated to the rear of the vehicle body around the production rotation shaft 66) indicated by the solid line in FIG. 4 (the direction of arrow A in FIG. 4). Rotate to.

  As a result, the mirror unit 60 rotates about the production rotation shaft 66 toward the rear of the vehicle body (in the direction of arrow A in FIG. 4), so that the virtual image 54 of the image 55 displayed on the display unit 22 is shown in FIG. The position greatly moves from the position indicated by the chain line to the position indicated by the solid line in FIG.

  For this reason, the virtual image 54 is displayed on the combiner portion 50A of the windshield glass 50 so as to gradually move upward from the distal end portion 54A, and finally the windshield glass 50 as shown by a solid line in FIG. The entire virtual image 54 is displayed on the combiner unit 50A so that a production effect can be obtained. For this reason, the rotation shaft 66 is used as the production rotation shaft 66.

  On the other hand, when the ignition switch is turned off, the control device 24 turns the mirror unit 60 to the use position indicated by the solid line in FIG. 4 to the standby position indicated by a two-dot chain line (the position where the mirror unit 60 is rotated forward about the production rotation shaft 66), and then the display unit 22 is rotated. Is turned off.

  As a result, when the ignition switch is turned off, the virtual image 54 is erased so as to gradually move downward from the lower end portion 54B from the state where the entire image is displayed as shown by the solid line in FIG.

  Further, in the normal use state in which the entire virtual image 54 is displayed, the mirror angle adjustment switch 98 is operated to rotate the rotation shaft 92A of the motor 92 in a predetermined direction, whereby the opening angle θ1 between the substrate 64 and the mirror 82 is set. It can be adjusted. For this reason, the vertical position of the virtual image 54 displayed in front of the vehicle body of the windshield glass 50 can be adjusted to a position that matches the eye point that is easily visible with the eyes 52 of each driver. When the mirror unit 60 rotates around the effect rotation shaft 66, the opening angle θ1 between the substrate 64 and the mirror 82 always maintains a constant angle.

  Next, the operation of this embodiment will be described.

  In the present embodiment, the display light from the display unit 22 in the projector unit 10 is projected onto the combiner unit 50A of the windshield glass 50 through the opening 18 of the case 16 and the opening 20 of the dashboard 14 by the mirror 82. Since the virtual image 54 is displayed in front of the vehicle body of the windshield glass 50, the virtual image 54 can be visually recognized by the driver's eyes 52.

  Further, the control device 24 irradiates display light from the display unit 22 by turning on the ignition switch. In this display light irradiation state, the control unit 24 rotates the effect rotation shaft 66 having the mirror unit 60 disposed on the upper end portion 64A of the substrate 64 as the rotation center. Then, the vehicle rotates rearward (in the direction of arrow A in FIG. 4).

  At this time, the rotating shaft 80A of the motor 80 is rotated, so that the wire 76 is wound around the pulley 78, and the substrate 64 resists the urging force of the coil spring 72, and the effect rotating shaft 66 is the center of rotation. Rotate in the direction of arrow A in FIG. As a result, the mirror 82 of the mirror unit 60 rotates together with the substrate 64 to the rear of the vehicle body (in the direction of arrow A in FIG. 4) with the production rotation shaft 66 as the rotation center.

  For this reason, when the ignition switch is turned on, the virtual image 54 of the image 55 displayed on the display unit 22 moves greatly from the lower position shown by the two-dot chain line in FIG. 4 to the position of the solid line shown in FIG. For this reason, the virtual image 54 is displayed on the combiner portion 50A of the windshield glass 50 so as to gradually move upward from the distal end portion 54A, and finally, the entire virtual image 54 as shown by a solid line in FIG. Is displayed. Therefore, it appears to the driver's eyes 52 that the virtual image 54 rises from the lower side of the vehicle body to the upper side of the vehicle body in a space where nothing can be seen.

  On the other hand, when the ignition switch is turned off, the control device 24 is in front of the vehicle body (in the direction indicated by the arrow B in FIG. 4) in the display light irradiation state with the production rotation shaft 66 arranged at the upper end portion 64A of the substrate 64 as the rotation center. ).

  At this time, the rotating shaft 80A of the motor 80 rotates in the reverse direction, so that the wire 76 is sent out from the pulley 78, and the board 64 moves forward with respect to the effect rotating shaft 66 by the urging force of the coil spring 72 (FIG. 5). In the direction of arrow B).

  As a result, when the ignition switch is turned off, the virtual image 54 is erased so as to gradually move downward from the lower end portion 54B from the state where the entire image is displayed as shown by the solid line in FIG. Thereafter, the control device 24 turns off the display unit 22.

  Thus, in this embodiment, the moving amount of the virtual image 54 displayed by projecting the display light on the windshield glass 50 in the vertical direction of the vehicle body is large, and the effect is improved.

  In this embodiment, since the virtual image 54 can be moved greatly in the vertical direction of the vehicle body, segment display display means that makes it difficult to move and display the virtual image 54, and dot matrix display and segment display that make it easy to move and display the virtual image 54. Even when the composite display means is used, the virtual image 54 displayed by projecting the display light onto the windshield glass 50 can be easily moved in the vertical direction of the vehicle body.

  Furthermore, in this embodiment, in the normal use state where the entire virtual image 54 is displayed, the windshield glass 50 is operated by operating the mirror angle adjustment switch 98 and rotating the rotation shaft 92A of the motor 92 by a predetermined amount in a predetermined direction. The vertical position of the virtual image 54 displayed in front of the vehicle body can be slightly moved.

  More specifically, the mirror 82 rotates the rotation shaft 92A of the motor 92 in a predetermined direction by operating the mirror angle adjustment switch 98, so that the mirror 82 is located behind the vehicle body with the eye point adjustment rotation shaft 86 as the rotation center (FIG. 5). The virtual image 54 can be slightly moved upward in the vehicle body, and the mirror 82 is moved in the reverse direction by rotating the rotation shaft 92A of the motor 92 by operating the mirror angle adjustment switch 98. The virtual image 54 can be slightly moved to the lower side of the vehicle body by rotating to the front of the vehicle body (in the direction of arrow D in FIG. 5) with the point adjusting rotary shaft 86 as the rotation center.

  As a result, in the normal use state in which the entire virtual image 54 is displayed, the vertical position of the virtual image 54 displayed in front of the vehicle body of the windshield glass 50 is matched with an eyepoint that is easily visible with the eyes 52 of each driver. The position can be adjusted. For this reason, the rotating shaft 86 is used as the eye point adjusting rotating shaft 86.

  Next, a fourth embodiment of the head-up display device according to the present invention will be described with reference to FIG.

  In addition, about the same member as 3rd Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  In this embodiment, instead of the actuator 70 in the third embodiment, as shown in FIG. 7, a circular gear 102 constituting a part of the actuator 100 is fixed to the effect rotation shaft 66 of the substrate 64. The gear 66 is connected to a gear 46 fixed to the rotating shaft of the motor 44 as in the second embodiment (see FIG. 3).

  Therefore, also in this embodiment, the same effect as the third embodiment can be obtained. Further, since the circular gear 102 constituting a part of the actuator 100 is fixed to the effect rotation shaft 66, the configuration is simplified.

  Next, a fifth embodiment of the head-up display device according to the present invention will be described with reference to FIG.

  In addition, about the same member as 3rd, 4th embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 8, in this embodiment, the left and right brackets in which the eyepoint adjusting rotary shaft 86 provided at the center in the vertical direction of the substrate 64 of the mirror unit 60 is disposed on the front wall portion 16 </ b> C of the case 16. 84 is rotatably supported. Further, an effect rotation shaft 66 provided at the upper end of the mirror 82 is rotatably supported by the left and right brackets 62 disposed on the upper portion of the substrate 64.

  Therefore, also in this embodiment, the same effect as the third and fourth embodiments can be obtained. Further, since the eye point adjusting rotating means is arranged on the substrate 64 side of the mirror unit 60, the load of the eye point adjusting rotating means is not received when the actuator 40 as the effect rotating means is operated. For this reason, the actuator 40 as the effect rotation means can be reduced in size.

  Although the present invention has been described in detail with respect to specific embodiments, the present invention is not limited to such embodiments, and various other embodiments are possible within the scope of the present invention. It will be apparent to those skilled in the art. For example, in the above-described embodiment, the display unit 22 such as a fluorescent display tube or a liquid crystal display is attached to the control device 24. However, the display unit and the control device may be divided. Alternatively, only the control device may be arranged outside the case 16.

  In the above embodiment, the mirrors 30 and 82 of the light reflecting portion are plane mirrors. However, the mirrors 30 and 82 are mirrors other than the plane mirrors such as a concave mirror and a convex mirror instead of the plane mirror, and have a magnification rate or a reduction rate. It is good also as a reflection part. Moreover, it is good also as a light reflection part using a some mirror.

  In the above embodiment, the display light is emitted from the display unit 22 by turning on the ignition switch. However, a power switch is provided in the head-up display device itself, and the display light is emitted from the display unit 22 by turning on the power switch. The mirrors 30 and 82 may be rotated.

  Moreover, in the said embodiment, although the combiner (semi-transparent mirror) 51 was enclosed in the windshield glass 50, it is good also as a structure which has arrange | positioned the combiner (semi-transparent mirror) 51 in the vehicle interior side of the windshield glass 50. FIG.

It is a sectional side view showing the head up display device concerning a 1st embodiment of the present invention. It is the perspective view seen from the vehicle body slanting back inner side which shows the principal part of the head-up display apparatus which concerns on 1st Embodiment of this invention. It is the perspective view seen from the vehicle body diagonally back inner side which shows the principal part of the head-up display apparatus which concerns on 2nd Embodiment of this invention. It is a sectional side view which shows the head-up display apparatus which concerns on 3rd Embodiment of this invention. It is the perspective view seen from the vehicle body diagonally back inner side which shows the principal part of the head-up display apparatus which concerns on 3rd Embodiment of this invention. It is the perspective view seen from the vehicle body diagonally back inner side which shows the attachment position of the mirror angle adjustment switch of the head-up display apparatus which concerns on 3rd Embodiment of this invention. It is a sectional side view which shows the head-up display apparatus which concerns on 4th Embodiment of this invention. It is a sectional side view which shows the head-up display apparatus which concerns on 5th Embodiment of this invention.

Explanation of symbols

10 Projector unit (head-up display device)
16 Projector unit case 22 Display section (display means)
24 control device 30 mirror (light reflection part)
34 Rotating shaft for mirror production 40 Actuator (rotating means for production)
50 Windshield Glass 54 Virtual Image 60 Mirror Unit 64 Mirror Unit Substrate 66 Mirror Unit Production Rotation Shaft 70 Actuator (Production Rotation Means)
82 Mirror (light reflector)
86 Rotating shaft for mirror eyepoint adjustment 90 Gear (Rotating means for eyepoint adjustment)
92 Motor (Rotating means for eyepoint adjustment)
94 Gear (Rotating means for eyepoint adjustment)
96 Idle gear (rotating means for eye point adjustment)
98 mirror angle adjustment switch 100 actuator (rotating means for production)

Claims (2)

A head-up display device that displays a virtual image by projecting display light emitted from a display means onto a windshield glass by a light reflecting portion,
An effect rotating shaft arranged on the upper end side of the light reflecting portion along the vehicle width direction in the longitudinal direction;
An effect rotation means for rotating the light reflecting portion around the effect rotation axis;
Control means for rotating the light reflecting portion by the effect rotating means in a state where display light is irradiated from the display means;
A head-up display device comprising: An eyepoint adjusting rotary shaft arranged in the longitudinal center of the light reflecting portion along the vehicle width direction, and an eyepoint for rotating the light reflecting portion around the eyepoint adjusting rotating shaft The head-up display device according to claim 1, further comprising an adjusting rotation unit.

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