WO2014049736A1

WO2014049736A1 - Headup display

Info

Publication number: WO2014049736A1
Application number: PCT/JP2012/074754
Authority: WO
Inventors: 佐々木　智子; 光祐白山; 雅也橋田; 小林　孝史; 新飼　康広
Original assignee: パイオニア株式会社
Priority date: 2012-09-26
Filing date: 2012-09-26
Publication date: 2014-04-03

Abstract

This headup display is provided with a light source unit, and an optical member. The light source unit outputs light that constitutes a display image. The optical member generates the display image by reflecting the light outputted from the light source unit, and the optical member can be in a state wherein the optical member is capable of reflecting the outputted light, and in a state wherein the optical member is not capable of reflecting the outputted light. In the cases where the optical member is not capable of reflecting the light, the light source unit stops to output the light for constituting the display image.

Description

Head-up display

The present invention relates to a technology for a head-up display mounted on a vehicle.

2. Description of the Related Art Conventionally, there is a head-up display technology that visually recognizes an image indicating information related to driving of a vehicle as a virtual image from a driver's eye position (eye point). For example, Patent Document 1 discloses a head-up display having a configuration in which a combiner rotates toward an avoidance position when a gravitational acceleration is applied to the combiner so that the driver's head is instigated toward the combiner. It is disclosed.

JP 2006-276724 A

According to the head-up display described in Patent Document 1, it is possible to reduce the impact on the head when the head collides with the combiner. On the other hand, when the combiner rotates toward a predetermined avoidance position, there is a possibility that light emitted from a light source that should enter the combiner may enter the eyes of a vehicle occupant or an oncoming vehicle occupant.

The present invention has been made to solve the above-described problems, and has as its main object to provide a head-up display capable of suppressing the light of the head-up display from entering the eye. To do.

The invention according to claim 1 is a head-up display mounted on a vehicle, and a light source unit that emits light constituting a display image, and a light emitted from the light source unit is reflected to generate a display image. An optical member, and the optical member can take a state where the emitted light can be reflected and a state where the light can not be reflected, and the light source unit is a state where the optical member cannot be reflected. In this case, emission of light constituting the display image is stopped.

The state which installed the head-up display which concerns on 1st Example in the vehicle interior is shown typically. It is the perspective view which looked at the head-up display from diagonally upward. It is a side view of the head up display attached to the sun visor. It is a side view of the head-up display which concerns on 2nd Example. It is a figure which shows the state in which the sun visor was inclined substantially perpendicularly with respect to the ceiling. It is a side view of the head-up display which concerns on 3rd Example attached to the sun visor. (A) is a side view of the head-up display in which the reflection part is folded with respect to the light source unit. (B) is a side view of the head-up display in which the support portion and the combiner are rotated by a predetermined angle toward the windshield. The state of a head-up display when a driver | operator's head collides with a reflection part or a combiner is shown. It is a side view of the head-up display which concerns on 4th Example. The perspective view of the head up display of the state where the sun visor was held by the hook-and-loop fastener is shown. It is a perspective view of the head-up display which concerns on 5th Example. (A) is a figure which shows a part of head-up display at the time of making a 1st lock part and a 2nd lock part into an unlocked state. (B) is a figure which shows a part of head-up display at the time of only making a 1st lock | rock part into an unlocking state. (A) is a side view of the head-up display with the right rail removed from the right groove. (B) is a side view of the head-up display when the left rail is further removed from the left groove from the state of (A). Sectional drawing at the time of cut | disconnecting a 1st lock | rock part by the cut surface parallel to XY plane is shown. A part of the head-up display when the guide portion is moved in the Y axis negative direction side along the window portion is shown. The perspective view of the head up display which concerns on the 6th Example cut | disconnected by the predetermined | prescribed cut surface is shown. A part of perspective view of a head up display concerning the 7th example is shown. The side view of the head-up display which concerns on a modification is shown.

In one preferred embodiment of the present invention, a head-up display mounted on a vehicle, a light source unit that emits light constituting a display image, and a display image that reflects light emitted from the light source unit. An optical member for generating the optical member, wherein the optical member can take a state in which the emitted light can be reflected and a state in which the light cannot be reflected, and the light source unit cannot reflect the optical member. If the light is in a certain state, emission of light constituting the display image is stopped.

The head-up display includes a light source unit and an optical member. The light source unit emits light constituting the display image. The optical member reflects the light emitted from the light source unit to generate a display image, and can take a state where the emitted light can be reflected and a state where the light can not be reflected. The light source unit stops emission of light constituting the display image when the optical member is in a non-reflective state. When the optical member cannot reflect the light emitted from the light source unit, the light path of the emitted light is different from the normal light path, and therefore, there is a possibility that the light enters the eyes of a vehicle occupant or an oncoming vehicle occupant. Therefore, according to this aspect, the head-up display can surely suppress the light emitted from the head-up display from entering the eyes of a vehicle occupant or an oncoming vehicle occupant.

In one aspect of the head-up display, the optical member is a reflecting portion that reflects light constituting the display image toward a combiner, and the reflecting portion is from an optical axis of light emitted from the light source unit. The light source unit is configured to be able to rise and fall in a direction away from the light source unit, and the light source unit stops emission of light constituting the display image when the reflection unit falls in a direction away from the optical axis. With this configuration, the head-up display can reliably suppress the light rays from entering the eyes of the driver and other occupants without being reflected by the reflecting portion.

In another aspect of the head-up display, the head-up display is attached to a ceiling portion of the vehicle or a sun visor equipped on the ceiling portion, and the reflection portion is predetermined on the reflection portion in the forward direction of the vehicle. When the above force is applied, it falls in the direction of the light source unit. This mode mitigates the impact on the head when the driver's head collides with the reflecting part, and suppresses light rays from entering the eyes of the driver and other passengers without being reflected by the reflecting part. can do.

In another aspect of the head-up display, the optical member is a combiner that displays light as a virtual image by reflecting the light emitted from the light source unit, and the combiner is configured to display the light emitted from the light source unit. The light source unit is configured to be tiltable in a direction deviating from the optical axis, and the light source unit is configured to emit light constituting the display image when the combiner is tilted in a direction deviating from the optical axis of the light emitted from the light source unit. Stop emission. According to this aspect, the impact on the head when the driver's head collides with the combiner can be mitigated, and the light can be prevented from entering the eyes of the oncoming passenger without being reflected by the combiner. .

In another aspect of the head-up display, the head-up display is attached to a ceiling portion of the vehicle or a sun visor equipped on the ceiling portion, and the combiner is connected to the combiner in a forward direction of the vehicle. When force is applied, it falls in the direction of the windshield of the vehicle. According to this aspect, the impact on the head when the driver's head collides with the combiner can be mitigated, and the light can be prevented from entering the eyes of the oncoming passenger without being reflected by the combiner. .

In another aspect of the head-up display, the head-up display further includes a support portion that is rotatably attached to the light source unit and supports the combiner, and the support portion has a predetermined amount or more in the forward direction of the vehicle. When this force is applied, the vehicle rotates in the direction of the windshield of the vehicle. According to this aspect, the impact on the head when the driver's head collides with the combiner can be mitigated, and the light can be prevented from entering the eyes of the oncoming passenger without being reflected by the combiner. .

In another aspect of the head-up display, the light source unit emits laser light as light constituting the display image. As described above, the head-up display can reliably prevent the laser light from entering the eye and ensure safety even when the laser light is emitted as the light constituting the display image. .

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In the following, “rotation” includes the case where the transition direction can be both clockwise and counterclockwise, and also includes the case where the movable range (angle) is limited.

<First embodiment>
[Outline configuration]
FIG. 1 schematically shows a state in which the head-up display according to the first embodiment is installed in the vehicle interior. FIG. 1 is a side view of a driver's seat of a vehicle. A driver 7 is seated on a seat 5 in a passenger compartment. Above the driver 7 is a roof (sheet metal) 2 that forms the outer frame of the vehicle, and below that is a ceiling 3 that is the interior of the passenger compartment. In front of the driver 7, there is a windshield 4 and a sun visor 6 of the vehicle. In FIG. 1, the sun visor 6 is fixed in a state of being opposed to the ceiling 3 (also referred to as “storage state”). Hereinafter, the short direction of the surface of the sun visor 6 in the storage state facing the ceiling 3 is the X axis, the long direction is the Y axis, and the direction perpendicular to the X axis and the Y axis is the Z axis, and the positive direction of each axis is illustrated. 1 and the direction shown in FIG. In the storage state of the sun visor 6, the horizontal direction of the light source unit 11 is on the XY plane, and the thickness direction of the light source unit 11 is coincident with the Z-axis direction.

The head-up display is installed diagonally upward in front of the driver 7. The head-up display mainly includes a main body portion 10 and a clip portion 9 for attaching the main body portion 10 to the sun visor 6. The main body unit 10 includes a light source unit 11, a reflection unit 20, a support unit 21, and a combiner 22.

The light source unit 11 includes a light source 12A and a housing 12B that houses the light source 12A. The light source 12 A emits light constituting an intermediate image indicating information to be visually recognized by the observer toward the reflection unit 20. A clip portion 9 is fixed to the upper surface of the light source unit 11 facing the ceiling 3. The clip portion 9 is a plate-like elastic body curved in a substantially J shape, and is a first facing portion 9L that is fixed to the upper surface of the light source unit 11, and a second facing portion that is shorter in the X-axis direction than the first facing portion 9L. 9S. The first opposing portion 9L and the second opposing portion 9S oppose each other and have an elastic force that urges the sun visor 6 in the direction of sandwiching it. Thus, the first facing portion 9L and the second facing portion 9S sandwich the housed sun visor 6 from the X axis positive direction side and fix the main body portion 10 to the sun visor 6. Thus, the clip part 9 functions as an attaching means or an attaching part, and the first opposing part 9L and the second opposing part 9S function as a holding part.

The reflection unit 20 is a reflective optical member that generates an intermediate image, and functions as an exit pupil expander (EPE). For example, the reflecting unit 20 is formed with a microlens array in which a plurality of microlenses are arranged on a surface on which light from the light source 12A is incident, and a reflecting surface is formed on a surface opposite to the microlens array. The

Support portions 21 for holding the combiner 22 are attached to both side surfaces of the light source unit 11, respectively. The support portion 21 extends from the light source unit 11 substantially in the positive direction of the X axis, and holds the combiner 22 closer to the windshield 4 than the light source unit 11. The combiner 22 projects the light constituting the intermediate image generated by the screen 12 and reflects the projected light partially onto the driver's eye point “Pe”, thereby allowing the observer to visually recognize the virtual image 30. It is a member. Note that the tip of the arrow of the virtual image 30 indicates the upward direction.

Configuration details
Next, the configuration of the head-up display will be described in more detail with reference to FIG. FIG. 2 is a perspective view of the head-up display as viewed obliquely from above.

As shown in FIG. 2, the sun visor 6 has a sun visor support shaft 61 that rotatably supports the sun visor 6, and a mirror opening / closing section 62 that opens and closes the vanity mirror fitted in the sun visor 6. In FIG. 2, a part of the hidden line of the sun visor support shaft 61 is indicated by a one-dot chain line. The sun visor support shaft 61 is provided at the edge of the sun visor 6 on the X axis positive direction side along the Y axis direction. The end 610 of the sun visor support shaft 61 is curved in the positive direction of the Z axis, and is fixed to the ceiling 3 in a state of being inserted into a mounting hole (not shown) provided in the ceiling 3. In addition, an exposed portion 611 that is an exposed portion other than the end portion 610 of the sun visor support shaft 61 is fixed to the ceiling 3 by being fitted to a fitting portion (not shown) provided on the ceiling 3. .

The sun visor 6 rotates around the sun visor support shaft 61 in a state where the end 610 and the exposed portion 611 are fixed to the ceiling 3. Specifically, when the sun visor 6 rotates in the direction of the arrow 71, the lower surface 65 B on which the light source unit 11 of the sun visor 6 is installed transitions in a direction to close the windshield 4.

Here, the clip portion 9 is attached to the sun visor 6 so as to sandwich the sun visor support shaft 61. Thereby, the gravity center of the main-body part 10 will be located in the vicinity of the sun visor support shaft 61, and the unintentional drooping of the sun visor 6 can be suppressed. This will be described later.

Further, the end portion 9ST of the second facing portion 9S of the clip portion 9 is bent toward the opening direction with respect to the first facing portion 9L and the sun visor 6, that is, in the X-axis negative direction and the Z-axis positive direction. Thereby, the operation | work which pinches | interposes the sun visor 6 with the clip part 9 can be made easy. Further, since the clip portion 9 is an elastic body that urges the sun visor 6 in a direction to sandwich the sun visor 6, the sun visor 6 having various sizes and thicknesses can be suitably sandwiched, and the main body portion 10 can be sandwiched between the sun visor 6. Can be fixed. The second facing portion 9S is designed to have a length that does not reach the mirror opening / closing portion 62. Thereby, the use of the vanity mirror is not limited.

The support portion 21 includes

arms

21L and 21R whose one ends are attached to the side surface of the light source unit 11, and a holding portion 21F that is connected to the other ends of the

arms

21L and 21R and to which the combiner 22 is fixed by screws or the like.

[Position of the center of gravity]
Next, the positional relationship between the sun visor support shaft 61 and the center of gravity of the main body 10 will be described with reference to FIG. FIG. 3 is a view of the head-up display attached to the sun visor 6 as observed from the Y axis positive direction side. In FIG. 3, the position “Gh” indicates the position of the center of gravity of the main body 10.

As shown in FIG. 3, the center of gravity position Gh is located in the vicinity of the sun visor support shaft 61. Specifically, the distance between the center of gravity position Gh and the sun visor support shaft 61 (also referred to as “center of gravity distance LG”) is the torque (also referred to as “working torque Tf”) applied to the sun visor support shaft 61 due to the weight of the main body 10. Is set to a distance that is smaller than the torque required to rotate the sun visor support shaft 61 (also referred to as “rotation required torque Tn”). Thereby, it can suppress suitably that the sun visor 6 rotates with the weight of the main-body part 10, and hangs down in a Z-axis negative direction. Further, in this case, since the gravity center position Gh is close to the sun visor support shaft 61 so that the acting torque Tf becomes smaller than the rotation required torque Tn, the sun visor 6 is rotated in the direction of the arrow 71 by a predetermined angle. Even if it exists, the sun visor 6 can be suitably fixed at an arbitrary position. That is, in this case, since the user can stop the sun visor 6 at an arbitrary angle with respect to the ceiling 3, the user can keep the sun visor 6 tilted to a desired position for the purpose of using the vanity mirror or sunshade. Can be stationary.

In general, a recommended value or a specified value is determined in advance for the required rotation torque Tn. Therefore, preferably, the gravity center position Gh is determined so that the acting torque Tf is equal to or less than the above-mentioned recommended value or specified value. Thereby, even if it is a case where the main-body part 10 is attached to various sun visors 6, it can prevent that the sun visor 6 hangs down and can use the sun visor 6 suitably.

The gravity center position Gh is located closer to the windshield 4 than the sun visor support shaft 61. This will be supplementarily described. The combiner 22 is positioned on the X-axis positive direction side of the sun visor support shaft 61 by being held by the support portion 21 extending in the direction in which the windshield 4 is present. On the other hand, the light source 12 A and the reflection unit 20 are located on the X-axis negative direction side from the sun visor support shaft 61. Here, the light source 12 A is disposed on the X-axis positive direction side with respect to the center of the light source unit 11 in the X-axis direction (see the broken line 76), and the reflection unit 20 is X-axis relative to the center of the light source unit 11 in the X-axis direction. It is arranged on the negative direction side. Further, the weight of the combiner 22 is larger than that of the reflecting portion 20.

By the arrangement of each component described above, the gravity center position Gh may be preferably arranged on the X axis positive direction side with respect to the sun visor support shaft 61. In this case, due to the weight of the head-up display, a torque is generated in a direction (that is, counterclockwise in FIG. 3) to suppress the sun visor 6 from hanging down with respect to the sun visor support shaft 61. Therefore, in this case, the sun visor 6 can be reliably suppressed from sagging against the user's intention due to an impact generated in the vehicle.

As described above, the head-up display according to the first embodiment includes the main body 10 that displays a virtual image so as to overlap the front scenery, and the attachment means that attaches the main body to the sun visor installed in front of the ceiling of the vehicle. A certain clip unit 9 is provided. The clip portion 9 is configured such that the center of gravity Gh of the main body portion 10 is positioned in the vicinity of the sun visor support shaft 61 when the main body portion 10 is attached to the sun visor 6. With this configuration, it is possible to prevent the sun visor 6 from drooping due to the weight of the main body 10 and to allow the driver to use the sun visor 6 suitably.

The clip portion 9 is made of a curved plate-like elastic body, and has a first facing portion 9L and a second facing portion 9S, which are holding portions having elastic force that biases the sun visor 6 in the holding direction. . Thereby, since the clip part 9 can clamp the sun visor 6 firmly and can support the main-body part 10, a head-up display is suitably attached with respect to the various sun visor from which thickness differs for every vehicle model.

<Second embodiment>
The head-up display according to the second embodiment is different from the first embodiment in that, in addition to the configuration of the first embodiment, the reflector 20 and the combiner 22 can be folded so as to face the sun visor 6, respectively. In addition, about the structure similar to 1st Example, the same code | symbol is attached | subjected and the description is abbreviate | omitted suitably.

FIG. 4A is a view of the head-up display attached to the sun visor 6 observed from the Y axis positive direction side. As shown in FIG. 4A, the support portion 21 has an arrow 72 and its opposite direction with the end portions 21T rotatably attached to both side surfaces substantially perpendicular to the Y-axis direction of the light source unit 11 as axes. It is free to rotate. The reflection unit 20 is supported by a support unit 23 provided in the light source unit 11. When a predetermined pressure or more is applied to the reflection unit 20 in the direction indicated by the arrow 73, the support unit 23 biases the reflection unit 20 in the direction of the arrow 73. As a result, the reflector 20 is folded so as to overlap the light source unit 11.

FIG. 4B is a side view of a head-up display in which the reflecting portion 20 and the combiner 22 are folded. As shown in FIG. 4B, in this case, the reflecting portion 20 is folded so as to overlap a portion of the light source unit 11 having a small width in the Z-axis direction. Moreover, the support part 21 and the combiner 22 are rotating about 90 degree | times counterclockwise centering on the edge part 21T from the state of FIG. 4 (A). As a result, the end portion 22T located on the opposite side of the support portion 21 of the combiner 22 is in contact with the surface of the reflecting portion 20 opposite to the reflecting surface.

Then, as shown in FIG. 4B, in a state where the reflecting portion 20 and the support portion 21 are folded, the main body portion 10 is a range where the sun visor 6 exists in the X-axis direction that is the short direction of the sun visor 6. (See double arrow W). In this manner, the width of the main body 10 in the X-axis direction can be reduced by folding the reflecting portion 20 and the support portion 21. Further, as will be described later, when the sun visor 6 is observed from the front, the main body 10 is hidden by the sun visor 6 and cannot be visually recognized. Therefore, the main body 10 hardly enters the field of view when the sun visor 6 is used.

FIG. 5 is a view showing a state in which the sun visor 6 is tilted about 90 degrees from the housed state. For example, when using the sun visor 6 as an awning, which is the original function, or / and using a vanity mirror, the driver hangs the sun visor 6 with respect to the ceiling 3 as shown in FIG.

In this case, the reflector 20 and the combiner 22 are folded in the direction in which the sun visor 6 exists. As a result, as indicated by a broken line 74, the main body 10 exists in a range in which the sun visor 6 extends in the Z-axis direction. In this way, since the total length of the head-up display can be reduced by folding the reflecting portion 20 and the combiner 22, the amount of protrusion from the sun visor 6 can be reduced, and the driver's field of view can be suitably secured. .

Further, the clip portion 9 is fitted from the sun visor support shaft 61 side to sandwich the sun visor 6. Therefore, as shown in FIG. 5, even when the sun visor 6 is suspended, the clip portion 9 is suitably supported by the sun visor 6, so that the head-up display does not fall off from the sun visor 6.

As described above, the head-up display according to the second embodiment includes the main body portion 10 and the clip portion 9. The main body unit 10 includes a light source unit 11, a reflection unit 20, a combiner 22, and a support unit 21 that supports the combiner 22 from the light source unit 11. The clip portion 9 has a first facing portion 9L and a second facing portion 9S which are sandwiching portions that sandwich the sun visor 6 in a rotatable state, and the main body is attached to the sun visor 6 installed in front of the ceiling 3 of the vehicle. A part 10 is attached. The support portion 21 can fold the combiner 22 in the direction of the sun visor 6 in a state where the sun visor 6 is inclined from the ceiling 3 toward the windshield 4. Similarly, the reflection unit 20 can be folded in the direction of the combiner 22. With this configuration, the user can fold the combiner 22 and the reflection unit 20, so that the sun visor 6 is tilted toward the windshield 4 even when the head-up display is mounted on the sun visor 6. Can do.

<Third embodiment>
In addition to the configuration of the second embodiment, the head-up display according to the third embodiment emits light from the light source 12 A when the reflection unit 20 or the combiner 22 has a predetermined inclination angle with respect to the light source unit 11. To stop. This reliably suppresses light from entering the eyes of the vehicle occupant and the driver of the oncoming vehicle.

FIG. 6 is a view of the head-up display according to the third example attached to the sun visor 6 as observed from the Y axis positive direction side. As shown in FIG. 6, the light source unit 11 includes a first switch unit 25 for detecting the position of the reflection unit 20 and a second switch unit 26 for detecting the position of the support unit 21.

The first switch unit 25 is a switch protruding from the light source unit 11 in the vicinity of the support unit 23 of the reflection unit 20, and is pressed down by the reflection unit 20 in a state where the reflection unit 20 can be used as shown in FIG. 6. State (also referred to as “on state”). Then, when the reflecting unit 20 is folded in the direction of the arrow 73, the first switch unit 25 is not pressed (also referred to as “off state”). Preferably, the generation of the intermediate image and the reflection of the light emitted from the light source 12A cannot be performed properly by the reflection unit 20 tilting in a direction deviating from the optical axis of the light emitted from the light source 1 (that is, in the direction of the arrow 73). Further, the installation position of the first switch unit 25 is adjusted so that the first switch unit 25 is turned off.

The second switch unit 26 is installed on the side surface of the light source unit 11 substantially parallel to the XZ plane and in the vicinity of the end 21T where the support unit 21 is attached to the light source unit 11. And the 2nd switch part 26 will be in the ON state pressed down by the support part 21 in the state which can use the combiner 22 as shown in FIG. In FIG. 6, the second switch part 26 exists at a position overlapping the support part 21. The second switch unit 26 is turned off when the support unit 21 and the combiner 22 are shifted by a predetermined angle in the direction of the arrow 77. Preferably, when the combiner 22 falls in a direction deviating from the optical axis of the light emitted from the light source 1 (that is, the direction of the arrow 77 and the direction opposite to the arrow 77), the driver cannot visually recognize the virtual image. The installation position and the like of the second switch unit 26 are adjusted so that the switch unit 26 is turned off.

The light source 1 is in an on state or an off state based on the electrical signals transmitted from the first switch unit 25 and the second switch unit 26. Is detected. The light source 1 stops emission of light constituting the display image when at least one of the first switch unit 25 and the second switch unit 26 is in an off state. This will be specifically described with reference to FIG.

FIG. 7A shows a head-up display in which the reflector 20 is folded with respect to the light source unit 11. In this case, the reflection unit 20 cannot reflect the light emitted from the light source 12A, and the first switch unit 25 is turned off. Therefore, in this case, the light source 12A determines that the driver cannot visually recognize the virtual image, and stops the emission of light constituting the display image. Thereby, it can suppress that the emitted light of 12 A of light sources injects directly into eyes, such as a driver | operator and the passenger | crew of a backseat.

FIG. 7B shows a head-up display in which the support portion 21 and the combiner 22 are rotated by a predetermined angle toward the windshield 4 side. In this case, the combiner 22 is in a state where it cannot properly reflect the reflected light from the reflecting unit 20 to the eye point Pe, and the second switch unit 26 is in an off state. Therefore, in this case, the light source 12A determines that the driver cannot visually recognize the virtual image, and stops the emission of light constituting the display image. Thereby, it can suppress reliably that the reflected light from the reflection part 20 injects into the driver | operator's eyes of an oncoming vehicle.

Further, in the head-up display according to the third embodiment, even when the driver's head suddenly collides with the reflecting portion 20 or the combiner 22 due to sudden braking or the like, the impact on the driver's head is reduced. However, it is preferable to prevent the light emitted from the light source 1 from entering the eyes of the vehicle occupant or the driver of the oncoming vehicle. This will be described with reference to FIG.

FIG. 8 (A) shows the state of the head-up display when the driver's head 8 collides with the reflector 20. In this case, a pressure higher than the pressure necessary for the reflection unit 20 to move is applied to the reflection unit 20 from the head 8. In this case, the reflecting portion 20 is urged in the direction of the arrow 78 by the support portion 23 and is folded with respect to the light source unit 11 as in FIG. Thus, even when the head 8 unexpectedly collides with the reflecting portion 20, the reflecting portion 20 moves in a direction avoiding from the head 8, so that the impact on the head 8 is small. Further, in this case, since the reflecting unit 20 cannot reflect the light emitted from the light source 12A and the first switch unit 25 is turned off, the light emission of the light source 1 is immediately stopped. Therefore, even if the head 8 collides with the reflecting portion 20 due to an impact caused by a sudden braking of the vehicle or the like, the emitted light of the light source 1 is directly seen by the driver while mitigating the impact due to the collision. The incident can be prevented.

FIG. 8B shows the state of the head-up display when the driver's head 8 collides with the combiner 22. In this case, a pressure higher than the pressure required for the support portion 21 to rotate is applied to the combiner 22 from the head 8. In this case, the support portion 21 and the combiner 22 rotate in the direction of the arrow 77 according to the pressure from the head 8. Thus, even when the head 8 collides with the combiner 22, the combiner 22 rotates in a direction avoiding the head 8, so that the impact on the head 8 is small. Further, in this case, the combiner 22 cannot reflect the reflected light from the reflecting unit 20 and the second switch unit 26 is turned off, so that the emission of light from the light source 1 is immediately stopped. Therefore, even when the driver's head 8 collides with the combiner 22 due to an impact caused by a sudden braking of the vehicle or the like, it is reflected on the driver's eyes of the oncoming vehicle while mitigating the impact caused by the collision. It can prevent that the reflected light of the part 20 enters.

As described above, the head-up display according to the third embodiment is a head-up display mounted on a vehicle, and the light source unit 11 that emits light constituting the display image and the light source unit 11 emit the light. A reflection unit 20 and a combiner 22 that reflect light and generate a display image are provided. And the reflection part 20 and the combiner 22 can take the state which can reflect the emitted light, and the state which cannot be reflected, Comprising: The light source unit 11 is the state which the reflection part 20 or the combiner 22 cannot reflect If it is, the emission of the light constituting the display image is stopped. With this configuration, the head-up display can reliably suppress the light emitted from the head-up display from entering the eyes of a vehicle occupant or an oncoming vehicle occupant.

<Fourth embodiment>
The head-up display according to the fourth embodiment has a reinforcing belt for reinforcing the force for fixing the head-up display to the sun visor 6 in addition to the configuration of any of the first to third embodiments. Other parts similar to those in the first to third embodiments are denoted by the same reference numerals, and the description thereof is omitted as appropriate.

FIG. 9 is a diagram of the head-up display according to the fourth example observed from the Y axis positive direction side. As shown in FIG. 9, the head-up display according to the fourth embodiment has reinforcing belts 13 X and 13 Y attached to both ends of the clip portion 9 and detachable from each other by hook-and-loop fasteners. In FIG. 9, the end portion 13Xa of the reinforcing belt 13X is raised like a hook so as to be detachable from the end portion 13Ya, and the end portion 13Xb opposite to the end portion 13Xa is connected to the end portion 9ST of the second facing portion 9S. It is attached. Further, the end portion 13Ya of the reinforcing belt 13Y is raised in a loop so as to be detachable from the end portion 13Xa, and the end portion 13Yb opposite to the end portion 13Ya is the end portion 9LT of the first facing portion 9L. Is attached.

As shown in FIG. 9, the reinforcing belts 13 X and 13 Y form a loop shape together with the clip portion 9 when the end portion 13 Xa and the end portion 13 Ya are in contact with each other. Accordingly, the reinforcing

belts

13X and 13Y preferably hold the clip portion 9 with the sun visor 6 in a state where the sun visor 6 is sandwiched between the clip portions 9.

FIG. 10 is a perspective view of the head-up display in a state where the main body portion 10 is fixed to the sun visor 6 by the clip portion 9 and the reinforcing belt 13. As shown in FIG. 10, the end portion 13 Xa and the end portion 13 Ya are in contact with each other on the sun visor 6 in a state where the sun visor 6 is sandwiched between the clip portions 9. In the state shown in FIG. 10, the reinforcing belts 13 X and 13 Y hold the clip portion 9 with the sun visor 6 involved. Thereby, even if a vibration etc. generate | occur | produce in a vehicle, the

reinforcement belts

13X and 13Y can suppress suitably that the sun visor 6 shifts | deviates with respect to the clip part 9, or falls.

<Fifth embodiment>
The head-up display according to the fifth embodiment includes an attaching / detaching mechanism capable of removing the clip portion 9 from the main body portion 10, a slide mechanism capable of adjusting the position of the main body portion 10 in the X-axis direction, and a main body portion relative to the Y-axis direction. It differs from the structure of the 1st thru | or 4th Example by the point provided with the horizontal direction adjustment mechanism which can adjust the angle of 10 horizontal directions. In addition, about the part similar to another Example, the same code | symbol is attached | subjected suitably and the description is abbreviate | omitted. Hereinafter, the Y-axis positive direction is also referred to as “left direction”, and the Y-axis negative direction is also referred to as “right direction”.

(1) Schematic Configuration FIG. 11 is a perspective view of a head-up display according to the fifth embodiment. In addition, in FIG. 11, the sun visor 6, the support part 21, and the combiner 22 are not illustrated for convenience.

As shown in FIG. 11, the head-up display according to the fifth embodiment includes a rail portion 14 to which the clip portion 9 is attached and an upper portion of the light source unit 11 and slides in the X-axis direction with respect to the rail portion 14. And a first lock portion 16 and a second lock portion 18 for fixing the unit upper portion 15 to the rail portion 14.

The unit upper part 15 is formed with a left groove part 51L, a central groove part 51C, and a right groove part 51R extending in the X-axis direction. The central groove portion 51C is formed at a position sandwiched between the left groove portion 51L and the right groove portion 51R, and is slidable in the X-axis direction with respect to the tips of the mounting

portions

91F and 91R extending from the clip portion 9 in the negative Z-axis direction. Has a shape.

The left groove 51L is formed at a position substantially symmetrical to the right groove 51R with respect to the central groove 51C. In the left groove 51L, the left rail 40L of the rail portion 14 formed in a square column shape is fitted. The left groove 51L is configured to be slidable in the X-axis direction with respect to the left rail 40L. The left groove 51L is provided with a locking portion 52 that extends to a position that closes the left rail 40L fitted in the left groove 51L. Thus, the left groove 51L functions as a fitting portion.

The right rail 40R of the rail portion 14 is fitted in the right groove portion 51R. The right groove 51R is configured to be slidable in the X-axis direction with respect to the right rail 40R. The right rail 40R has a locking surface 41 that is substantially flush with the upper surface of the unit upper portion 15 in a state where the right rail 40R is fitted in the right groove 51R. Thus, the right groove portion 51R functions as a fitting portion.

The rail part 14 has the to-

be-attached surfaces

43F and 43R which contact the mounting

parts

91F and 91R of the clip part 9, respectively. The mounting portion 91R and the mounting surface 43R are fixed by the fastening force of the screw portion 46 that passes through the window portion 92R formed in the mounting portion 91R. Further, the mounting portion 91F and the mounting surface 43F are inserted from the positive direction of the X-axis, and by the fastening force of the nut portion 47 that is screwed with the screw portion 48 whose tip protrudes from the window portion 92R formed in the mounting portion 91F. Fixed.

The mounted surface 43F has two guide portions 44F that are formed along the window portion 92F and project from the window portion 92F. Similarly, the mounting surface 43R includes two guide portions 44R that are formed along the window portion 92R and project from the window portion 92R. When the screw part 46 and the nut part 47 are loosened, the rail part 14 moves on the YZ plane with respect to the clip part 9 within the movable range of the

guide parts

44F and 44R regulated by the

window parts

92F and 92R. It becomes possible. This will be described later with reference to FIG.

The first lock portion 16 and the second lock portion 18 can switch between a locked state that restricts the movement of the unit upper portion 15 relative to the rail portion 14 and an unlocked state in which the locked state is released. In FIG. 11, the first lock portion 16 and the second lock portion 18 are each set in a locked state.

As shown in FIG. 11, the first lock portion 16 has a substantially donut-shaped rotation portion 60 that is rotatable around the rotation shaft portion 17 and a lever portion 66 that is operated by the user. Then, the first lock portion 16 rotates on the unit upper portion 15 within the range indicated by the arrow 68 based on the operation on the lever portion 66. Further, the rotating portion 60 is formed with a protrusion 67 that is formed on the opposite side of the lever portion 66 and has a larger curvature than the other portions. Then, in the state shown in FIG. 11, the protruding portion 67 extends from the upper surface of the unit upper portion 15 to the locking surface 41 and is locked to the right rail 40R. Further, the protrusion 67 regulates the movement of the unit upper portion 15 so that the unit upper portion 15 cannot slide with respect to the rail portion 14 by pressing a contact surface 49 formed perpendicular to the locking surface 41. To do. This specific configuration will be described later with reference to FIG. As described above, in the locked state, the first lock portion 16 restricts the right groove portion 51R from moving in the Z-axis negative direction with respect to the right rail 40R, and the right groove portion 51R is X with respect to the right rail 40R. Restricts movement in the axial direction.

As shown in FIG. 11, the second lock portion 18 has a triangular columnar head portion 81 protruding from the opening portion 19 provided adjacent to the right groove portion 51R. And the 2nd lock part 18 supports the unit upper part 15 so that the right groove part 51R may not drop | omit from the right rail 40R when the said head 81 straddles on the locking surface 41 in the locked state. When the button (not shown) provided on the lower surface of the light source unit 11 is pressed, the second lock portion 18 is detached from the locking surface 41 and is accommodated in the opening 19. Therefore, in this case, the second lock portion 18 is unlocked.

(2) Attachment / Removal Mechanism The unit upper part 15 can be attached to and detached from the rail part 14 when the first lock part 16 and the second lock part 18 are unlocked. The unit upper portion 15, the first lock portion 16, and the second lock portion 18 function as an attachment / detachment mechanism for the main body portion 10. This will be specifically described.

First, the state of the head-up display when the first lock unit 16 and the second lock unit 18 are unlocked will be described with reference to FIG.

FIG. 12A shows a part of the head-up display when the first lock unit 16 and the second lock unit 18 are unlocked. In FIG. 12A, the lever portion 66 rotates clockwise from the locked state shown in FIG. 11 to a position substantially parallel to the right groove portion 51R. In this case, the first lock portion 16 is unlocked, and the protrusion 67 of the first lock portion 16 comes off from the locking surface 41. In FIG. 12A, when a button for switching between a locked state and an unlocked state of the second lock unit 18 (not shown) is pressed, the second lock unit 18 is unlocked, and the head 81 Is accommodated in the opening 19.

Next, a method of removing the main body portion 10 from the clip portion 9 and the rail portion 14 after the first lock portion 16 and the second lock portion 18 are unlocked will be described with reference to FIG.

FIG. 13 (A) is a view of the head-up display in a state where the right rail 40R is removed from the right groove 51R from the negative direction of the X axis. When the first lock portion 16 and the second lock portion 18 are in the unlocked state, the right groove portion 51R is not restricted by the first lock portion 16 and the second lock portion 18 from moving in the negative Z-axis direction with respect to the right rail 40R. Therefore, in this case, the user can remove the right rail 40R from the right groove 51R by lowering the right side of the main body 10 in the negative Z-axis direction.

FIG. 13 (B) is a view of the head-up display observed from the X-axis negative direction when the left rail 40L is removed from the left groove 51L from the state of FIG. 13 (A). The user lowers the entire main body 10 in the negative Z-axis direction from the state shown in FIG. In this case, the locking portion 52 shown in FIG. 11 changes in relative position with respect to the left rail 40L, and is not positioned on the positive direction of the Z-axis of the left rail 40L. Therefore, in this case, the user can remove the left rail 40L from the left groove portion 51L by lowering the entire main body portion 10 in the negative Z-axis direction.

Thus, the main body part 10 can be suitably removed from the clip part 9 and the rail part 14 by bringing the first lock part 16 and the second lock part 18 into the unlocked state. Therefore, since the user can remove the main body 10 and take it out when leaving the vehicle, it is preferable to suppress damage caused by theft or failure caused by leaving it in the vehicle when the outside air temperature is high. be able to. Moreover, when removing the main-body part 10 from the rail part 14, it does not intend the head-up display by requiring the operation of two steps of making the 1st lock part 16 and the 2nd lock part 18 into an unlocked state. Dropout can be reliably suppressed.

In addition, when attaching the main-body part 10 with respect to the clip part 9 and the rail part 14, after fitting a left rail 40L in the left groove part 51L first, a user fits the right rail 40R in the right groove part 51R. Then, the user switches the first lock unit 16 and the second lock unit 18 from the unlocked state to the locked state. As a result, the main body 10 is fixed to the clip 9 and the rail 14 again.

(3) Slide mechanism The unit upper part 15 is slidable with respect to the rail part 14 when the first lock part 16 is unlocked and the second lock part 18 is locked. In this case, the rail portion 14 functions as a slide mechanism that slides the unit upper portion 15 in the X-axis direction. This will be specifically described.

FIG. 12B is a diagram illustrating a part of the head-up display when the first lock unit 16 is in the unlocked state and the second lock unit 18 is in the locked state. In FIG. 12B, the protrusion 67 of the first lock portion 16 does not contact the contact surface 49, and the locking surface 41 and the first lock portion 16 do not contact each other. On the other hand, since the second lock portion 18 is in the locked state, the unit upper portion 15 is locked to the right rail 40 R by the head portion 81 of the second lock portion 18.

Here, as shown in FIG. 12B, the unit upper portion 15 is slidable with respect to the rail portion 14 in a state where the projection 67 of the first lock portion 16 is not in contact with the contact surface 49. . This will be described with reference to FIG.

FIGS. 14A and 14B are cross-sectional views when the first lock portion 16 is cut by a cutting plane parallel to the XY plane within a broken line 75 in FIG. 14A shows a cross-sectional view when the first lock portion 16 is in a locked state, and FIG. 14B shows a cross-sectional view when the first lock portion 16 is in an unlocked state.

As shown in FIGS. 14A and 14B, the rail portion 14 has a first engagement surface 141 on the back side of the contact surface 49, in which triangular wave irregularities are formed in an XY plan view. Further, the side surface of the right groove portion 51 R facing the first engagement surface 141 is provided with a second engagement surface 151 that can be engaged with the first engagement surface 141 by forming triangular corrugations in the XY plan view.

And when the 1st lock part 16 is a locked state, the projection part 67 contact | abuts to the contact surface 49, and the force pressed on the Y-axis positive direction acts on the contact surface 49. FIG. As a result, as shown in FIG. 14A, the contact surface 49 and the first engagement surface 141 are pushed in the positive direction of the Y axis and engaged with the second engagement surface 151. In this case, since the first engagement surface 141 and the second engagement surface 151 are engaged even when a force in the X-axis direction is applied to the unit upper portion 15, the unit upper portion 15 has the rail portion. 14 does not slide in the X-axis direction.

On the other hand, when the first lock portion 16 is in the unlocked state, as shown in FIG. 14B, the projection 67 is separated from the contact surface 49, and therefore the first engagement surface 141, the second engagement surface 151, A gap is formed between the two. As a result, the first engagement surface 141 and the second engagement surface 151 are not engaged, and the unit upper portion 15 is slidable in the X-axis direction with respect to the rail portion 14.

Thus, the unit upper portion 15 can be slid in the X-axis direction with respect to the rail portion 14 by bringing the first lock portion 16 into the unlocked state. Thereby, since the user can arbitrarily adjust the center-of-gravity distance LG described in the first embodiment, the main body portion 10 can be suitably attached to the sun visor 6 so that the acting torque Tf is smaller than the rotation required torque Tn. . Therefore, according to this aspect, even when the head-up display according to the present embodiment is attached to various sun visors 6 having different shapes and sizes for each vehicle type, the sun visor 6 hangs down due to the weight of the main body 10. And the occupant can use the sun visor 6 suitably. In addition, since the distance between the combiner 22 and the eye point Pe can be adjusted by sliding the main body 10 in the X-axis direction, the user can view the virtual image 30 within the eye point Pe (eye box). It can adjust suitably so that it may be contained in.

(4) Horizontal adjustment mechanism The head-up display shown in FIG. 11 is an angle formed by the horizontal direction of the main body 10 with respect to the longitudinal direction of the sun visor 6 (ie, the Y axis) (also simply referred to as “horizontal angle Dh”). It is possible to change. Thereby, even if the inclination angle in the longitudinal direction of the sun visor 6 is different for each vehicle type, the position of the main body 10 can be corrected so that the horizontal angle Dh is easy for the driver to see the virtual image. is there. In this case, the clip portion 9 and the rail portion 14 function as a horizontal direction adjustment mechanism of the main body portion 10. This will be described again with reference to FIG.

First, in the state shown in FIG. 11, when the screw part 46 and the nut part 47 are loosened and the fastening force to the mounting

surfaces

43R and 43F on the mounting

parts

91R and 91F is weakened, the mounting

parts

91R and 91F are covered. The mounting

surfaces

43R and 43F are slidable. At this time, the movable range of the mounted

surfaces

43F and 43R with respect to the mounting

portions

91F and 91R is a range in which the two guide portions 44F can move along the shape of the window portion 92F, and the two guide portions 44R have the window portion 92R. It is limited to the range which can move along the shape.

FIG. 15 shows the head-up display when the guide portion 44R is moved along the window portion 92R to the Y axis negative direction side and the guide portion 44F is moved along the window portion 92F to the Y axis negative direction side. Some are shown. In this case, the main body portion 10 and the rail portion 14 are rotated counterclockwise by a predetermined angle in the Y-axis direction with respect to the clip portion 9. Similarly, when the guide portion 44R is moved along the window portion 92R to the Y axis positive direction side and the guide portion 44F is moved along the window portion 92F to the Y axis positive direction side, the main body portion 10 and the rail The part 14 rotates clockwise by a predetermined angle in the Y-axis direction with respect to the clip part 9.

Thus, according to the head-up display according to the present embodiment, the user can preferably adjust the horizontal angle Dh of the main body 10. Moreover, since the movable range with respect to the clip part 9 of the main-body part 10 and the rail part 14 is regulated by the

guide parts

44F and 44R and the

window parts

92F and 92R, the user can easily set the horizontal direction angle Dh of the main-body part 10. Can be adjusted.

<Sixth embodiment>
In addition to the configuration of the fifth embodiment, the head-up display according to the sixth embodiment causes the second lock portion 18 to transition from the locked state to the unlocked state when the first lock portion 16 is in the locked state. It has a configuration that cannot. Thereby, the head-up display according to the sixth embodiment prevents the main body 10 from falling when the user attempts to slide the main body 10 and puts the first lock 16 in the unlocked state. Hereinafter, the same parts as those in the fifth embodiment are denoted by the same reference numerals, and the description thereof is omitted as appropriate.

FIG. 16 is a perspective view of the head-up display cut along a predetermined cut surface. In FIG. 16, the hatched portion corresponds to the cross section of each component, and the portion with the dot pattern indicates the second lock portion 18 other than the cross section. In FIG. 16, the first lock portion 16 and the second lock portion 18 are in a locked state. In FIG. 16, a part of the main body 10 is not shown.

As shown in FIG. 16, the second lock unit 18 has a button unit 82 for the user to switch between the locked state and the unlocked state. The button part 82 protrudes from the lower surface of the main body part 10. When the second lock portion 18 is in the locked state, when the user presses the button portion 82 in the direction of the arrow 85, the force that rotates clockwise around the shaft portion 83 of the second lock portion 18 is the second lock portion. 18 acts on. As a result, a force in the direction of the arrow 86 acts on the head 81 and is connected to the head 81 and extends from the bottom of the opening 19 in a direction away from the shaft 83. On the other hand, a force in the direction of arrow 87 acts.

The first lock part 16 has a restricting part 63 that is refracted into a substantially L shape through the hole formed in the unit upper part 15 from the rotating part 60. And the control part 63 exists in the position which pinches | interposes the extension part 83 of the 2nd lock part 18 with the unit upper part 15 in the Z-axis direction, when the 1st lock part 16 is a locked state. On the other hand, if the lever part 66 is operated and the 1st lock part 16 changes to an unlocked state, the control part 63 will move to the position which does not overlap with the extension part 83 on XY plane.

And when the 1st lock part 16 shown in FIG. 16 is a locked state, even if it is a case where the button part 82 is pressed, the control part 63 will prevent the extension part 83 from moving in the direction of the arrow 87. regulate. Therefore, in this case, since the extending portion 83 does not move in the direction of the arrow 87, the head 81 on the locking surface 41 of the rail portion 14 does not move in the direction of the arrow 86 and is accommodated in the opening 19. Not. Thus, when the 1st lock part 16 is a locked state, the 2nd lock part 18 cannot change from a locked state to an unlocked state. Therefore, in this case, when the user tries to slide the main body 10 in the X-axis direction with the first lock 16 unlocked, the second lock 18 is always in the locked state. It can suppress reliably that the part 10 falls unexpectedly.

On the other hand, when the button portion 82 is pressed when the first lock portion 16 is unlocked, the extension portion 83 moves in the direction of the arrow 87 because the restriction portion 63 does not lock the extension portion 83. At the same time, the head 81 moves in the direction of the arrow 86. As a result, the head 81 is accommodated in the opening 19, and the second lock portion 18 is unlocked. In this case, as described in the fifth embodiment, the main body portion 10 can be suitably removed from the clip portion 9 and the rail portion 14.

As described above, the head-up display according to the sixth embodiment includes the clip portion 9 and the rail portion 14 that are attachment portions that can be attached to the sun visor 6, and the main body portion 10 that can be attached to and detached from the clip portion 9 and the rail portion 14. With. In addition, the main body 10 includes a first lock part 16 and a second lock part 18. The second lock portion 18 is a restricting means for restricting the main body portion 10 from moving in a direction away from the clip portion 9 and the rail portion 14 when the main body portion 10 is attached to the clip portion 9 and the rail portion 14. Function. In addition, the second lock unit 18 includes a button unit 82 that functions as a release unit that releases the locked state of the second lock unit 18. And the 1st lock part 16 functions as a locking means which locks the button part 82 so that the locked state of the 2nd lock part 18 cannot be cancelled | released at the time of a locked state. Thereby, unintentional drop-out of the head-up display installed near the user's head can be reliably prevented, and safety can be ensured.

<Seventh embodiment>
In the head-up display according to the seventh embodiment, in addition to the configuration of the sixth embodiment, the second lock portion 18 is unlocked against the user's will during the slide operation of the main body portion 10. Also, the main body 10 has a configuration that can prevent the main body 10 from falling. Hereinafter, the same parts as those in the sixth embodiment are denoted by the same reference numerals, and the description thereof is omitted as appropriate.

FIG. 17A shows a part of a perspective view of a head-up display according to the seventh embodiment. In FIG. 17A, both the first lock portion 16 and the second lock portion 18 are unlocked.

As shown in FIG. 17 (A), there is provided a locking part 54 on a flat plate extending from the unit upper part 15 toward the right groove part 51R. And the latching | locking part 54 has opposed the latching surface 41 of the right rail 40R engage | inserted by the right groove part 51R. A notch 53 is formed at the end of the locking surface 41 of the right rail 40R. The notch 53 has a width in the X-axis direction and the Y-axis direction that is greater than that of the locking portion 54.

And as shown to FIG. 17 (A), in the state to which the latching | locking part 54 does not overlap with the notch part 53 in XY plane, the latching | locking part 54 is engaging with the locking surface 41. FIG. Therefore, in this case, the main body 10 does not fall even if the first lock part 16 and the second lock part 18 are in the unlocked state. That is, even when the user unexpectedly presses the button part 82 of the second lock part 18 to make the second lock part 18 unlocked while the main body part 10 is slid in the X-axis direction, Part 10 does not fall.

FIG. 17 (B) shows a part of a perspective view of the head-up display when the main body 10 is slid to the maximum in the X-axis positive direction from the state of FIG. 17 (A). As shown in FIG. 17B, in this case, the locking portion 54 is positioned on the cutout portion 53. Further, as described above, the notch 53 has a width in the X-axis direction and the Y-axis direction that is larger than that of the locking part 54, so that the locking part 54 passes through the notch 53 in the Z-axis direction. It is possible. Therefore, in this case, the user can preferably remove the main body portion 10 from the clip portion 9 and the rail portion 14.

As described above, the main body portion 10 has the locking portion 54 that functions as a fall prevention means for restricting the movement of the main body portion 10 with respect to the clip portion 9 and the rail portion 14 when sliding. Thereby, drop-off of the main-body part 10 at the time of the slide of the main-body part 10 can be suppressed suitably.

<Modification>
Next, modified examples suitable for the first to seventh embodiments will be described. The following modifications may be applied in any combination to the above-described embodiments.

(Modification 1)
In the fourth embodiment, the head-up display has a clip portion 9 that further includes a portion curved in a substantially J shape from the first facing portion 9L to the opposite side of the second facing portion 9S, instead of having the reinforcing belt 13. May be.

FIG. 18 shows a side view of a head-up display according to a modification. As shown in FIG. 18, the clip portion 9A includes a third facing portion 9V that is curved from the first facing portion 9L into a substantially J shape. In this case, the clip portion 9 sandwiches the sun visor 6 in the X-axis direction in addition to the Z-axis direction. Therefore, even with this configuration, the head-up display can firmly fix the main body 10 to the sun visor 6.

(Modification 2)
The configuration of the head-up display according to the third embodiment is not limited to the configuration shown in FIG.

For example, the light source unit 11 may be configured integrally with the sun visor 6. In this case, a sun visor dedicated to a head-up display having the light source 12A and having the support portion 21 and the reflection portion 20 attached thereto is installed in the vehicle. Even in this case, the light source 12 A stops emitting light when the reflection unit 20 or the combiner 22 has a predetermined inclination angle with respect to the light source unit 11. Thereby, it can suppress reliably that a light ray enters into eyes of a passenger | crew, a driver of an oncoming vehicle, etc.

In another example, the reflection unit 20 that is an optical member for generating an intermediate image may be provided inside the light source unit 11, and light may directly enter the combiner 22 from the light source unit 11. Even in this configuration, the light source 12 A stops emitting light when the combiner 22 has a predetermined inclination angle with respect to the light source unit 11. Thereby, it can suppress reliably that a light ray enters into the eyes of the driver of an oncoming vehicle.

(Modification 3)
In the fifth to seventh embodiments, the head-up display is attached to the sun visor 6. However, the head-up display is not limited to this, and may be directly attached to the ceiling 3. In this case, for example, the clip portion 9 is inserted into a mounting hole of the sun visor 6 provided in the ceiling 3 in place of the second facing portion 9S curved from the first facing portion 9L, and is locked to the ceiling 3 Part. Even in this case, the head-up display includes the clip portion 9 and the rail portion 14 and the unit upper portion 15 described in the fifth to seventh embodiments, so that the attaching / detaching function and the sliding function of the main body portion 10 and the horizontal direction are provided. An adjustment function or the like can be suitably realized.

(Modification 4)
In the fifth embodiment, the head-up display can change the angle formed by the horizontal direction of the main body 10 with respect to the longitudinal direction of the sun visor 6 (that is, the Y axis). Instead of this, or in addition to this, the head-up display may be capable of changing the angle formed by the horizontal direction of the main body 10 with respect to the short direction of the sun visor 6 (that is, the X axis). Good. In this case, for example, in the head-up display, horizontal adjustment mechanisms such as the mounting

portions

91F and 91R of the clip portion 9 formed along the Y axis and the mounting

surfaces

43F and 43R of the rail portion 14 are provided on the X axis. Are similarly formed.

Therefore, according to this modification, the head-up display can suitably adjust the horizontal angle of the main body 10 with respect to the ground on which the vehicle travels.

The present invention can be suitably applied to a head-up display that allows a driver to visually recognize route guidance and vehicle information.

2 roof 3 ceiling 4 windshield 7 driver 9 clip part 10 body part 11 light source unit 20 reflection part 21 arm part 22 combiner 30 virtual image

Claims

A head-up display mounted on a vehicle,
A light source unit that emits light constituting a display image;
An optical member that reflects light emitted from the light source unit to generate a display image;
With
The optical member can take a state in which the emitted light can be reflected and a state in which the light can not be reflected,
The head-up display, wherein the light source unit stops emission of light constituting the display image when the optical member is in a non-reflective state.
The optical member is a reflecting portion that reflects light constituting the display image toward a combiner,
The reflecting portion is configured to be freely tiltable in a direction deviating from the optical axis of the light emitted from the light source unit,
2. The head-up display according to claim 1, wherein the light source unit stops emission of light constituting the display image when the reflection unit falls in a direction away from the optical axis.
The head-up display is attached to a ceiling portion of the vehicle or a sun visor equipped on the ceiling portion,
3. The head-up display according to claim 2, wherein the reflection unit falls in a direction of the light source unit when a force of a predetermined level or more is applied to the reflection unit in a forward direction of the vehicle.
The optical member is a combiner that displays light as a virtual image by reflecting light emitted from the light source unit,
The combiner is configured to be tiltable in a direction deviating from the optical axis of the light emitted from the light source unit,
The said light source unit stops the emission of the light which comprises the said display image, when the said combiner falls in the direction which remove | deviates from the optical axis of the light radiate | emitted from the said light source unit. The head-up display according to any one of the above.
The head-up display is attached to a ceiling portion of the vehicle or a sun visor equipped on the ceiling portion,
The head-up display according to claim 4, wherein the combiner falls down in a direction of a windshield of the vehicle when a force of a predetermined level or more is applied to the combiner in a forward direction of the vehicle.
A support unit that is rotatably attached to the light source unit and supports the combiner;
The head-up display according to claim 5, wherein the support portion rotates in a direction of a windshield of the vehicle when a predetermined force or more is applied to the combiner in a forward direction of the vehicle.
The head-up display according to any one of claims 1 to 6, wherein the light source unit emits a laser beam as light constituting the display image.