Head-up display

Abstract

To provide a head-up display that can suppress the decline in visibility. [Solution] The head-up display 1 comprises an image generation device 50, a plate-shaped mirror (reflective mirror 30) having a reflective surface, and a housing 10 that houses the image generation device 50 and the mirror (reflective mirror 30). An elastic part 130 is positioned between the side surface (second side surface 31d) of the mirror (reflective mirror 30) and the housing 10, and the elastic part 130 is sandwiched between the mirror (reflective mirror 30) and the housing 10.

Description

[[Technical Field]]

[0001] The present disclosure relates to a head-up display. [[Background Art]]

[0002] Patent Document 1 discloses a head-up display device mounted on a vehicle and capable of projecting an image. This head-up display device includes: a housing fixed to the vehicle; a reflection member rotatably supported by the housing and held at a rotational position; a projection light emitting unit that projects projection light corresponding to information onto a windshield of the vehicle via the reflection member; and an elastic vibration transmission member provided between the housing and the reflection member. The vibration transmission member is fixed to one of the housing and the reflection member, and is in elastically compressed contact with the other of the housing and the reflection member over the entire rotatable range of the reflection member. [[Prior Art Literature]] [[Patent Literature]]

[0003] [[Patent Document 1]] Japanese Patent No. 6254988 [[Summary of the Invention]] [[Problem to be Solved by the Invention]]

[0004] However, in conventional head-up display devices, when the reflection member and the vibration transmission member vibrate in a state assembled to the housing, the reflection member may resonate. In this case, even if rattling of the reflection member is suppressed, the reflection member is distorted and sways. As a result, there is a problem that blurring occurs in the virtual image projected by the head-up display device, leading to reduced visibility.

[0005] Accordingly, an object of the present disclosure is to provide a head-up display that can suppress a decrease in visibility. [[Means for Solving the Problem]]

[0006] A head-up display according to one aspect of the present disclosure comprises an image generating device, a plate-shaped mirror having a reflective surface, and a housing that houses the image generating device and the mirror, wherein an elastic portion is disposed between the side surface of the mirror and the housing, and the elastic portion is sandwiched between the mirror and the housing. [Effects of the Invention]

[0007] The head-up display of this disclosure can suppress the decrease in visibility. [Brief explanation of the drawing]

[0008] [Figure 1] Figure 1 is a perspective view showing a head-up display according to an embodiment mounted in a vehicle. [Figure 2] Figure 2 is a cross-sectional view showing the windshield and head-up display. [Figure 3] Figure 3 is a perspective view looking down at the housing and reflective mirror of a head-up display according to an embodiment mounted on a vehicle. [Figure 4] Figure 4 is a cross-sectional view showing the head-up display along line AA in Figure 3. [Figure 5] Figure 5 is a plan view showing the surface of a reflective mirror. [Figure 6] Figure 6 is a plan view showing the back surface of the reflective mirror. [Figure 7] Figure 7 is a side view showing the orientation of the reflective mirror. [Figure 8] Figure 8 is another plan view showing the surface of the reflective mirror. [Modes for carrying out the invention]

[0009] The embodiments will be described in detail below with reference to the drawings.

[0010] The embodiments described below are all comprehensive or specific examples. The numerical values, shapes, components, arrangement positions of components, and connection configurations shown in the following embodiments are examples only and are not intended to limit this disclosure. Furthermore, any components in the following embodiments that are not described in an independent claim will be described as optional components.

[0011] Furthermore, each figure is a schematic diagram and not necessarily a strictly accurate representation. Therefore, for example, the scale may not necessarily match in each figure. Also, in each figure, substantially identical components are given the same reference numerals, and redundant explanations are omitted or simplified.

[0012] Furthermore, in the following embodiments, in Figure 2, the direction normal to the surface of the reflective mirror on the front side of the vehicle is defined as the positive X-axis direction, the right side when viewed along the front of the vehicle is defined as the positive Y-axis direction, and the direction perpendicular to the positive X-axis and positive Y-axis directions, and vertically upward, is defined as the positive Z-axis direction. The directions in Figure 2 are also applied in Figures 3 and onward.

[0013] Furthermore, in the following embodiments, expressions such as "X-axis direction," "rectangular," and "approximately parallel" are used. For example, "X-axis direction" means the exact X-axis direction, "rectangular" means the exact rectangle, and "approximately parallel" means not only the exact parallelism, but also substantially the X-axis direction, substantially rectangular, and substantially parallel, that is, including an error of, for example, a few percent. Also, "X-axis direction," "rectangular," and "approximately parallel" means that they are X-axis direction, rectangular, and substantially parallel to the extent that the effects of this disclosure can be achieved. The same applies to other expressions using "direction," "shape," and "approximately."

[0014] (Embodiment) <Structure> The head-up display 1 of this disclosure will be described in detail below with reference to Figures 1 to 8.

[0015] FIG. 1 is a perspective view showing a head-up display 1 according to an embodiment mounted on a vehicle 2. FIG. 2 is a cross-sectional view showing a windshield 3 and the head-up display 1. FIG. 3 is a perspective view of a housing 10 and a reflection mirror 30 of the head-up display 1 according to the embodiment mounted on the vehicle 2 as viewed from above. FIG. 4 is a cross-sectional view showing the head-up display 1 taken along line A-A in FIG. 3. FIG. 5 is a plan view showing a surface 31a of the reflection mirror 30. FIG. 6 is a plan view showing a back surface 31b of the reflection mirror 30. FIG. 7 is a side view showing the posture of the reflection mirror 30. FIG. 8 is another plan view showing the surface 31a of the reflection mirror 30.

[0016] First, a schematic configuration of the head-up display 1 will be described.

[0017] As shown in FIGS. 1 and 2, the head-up display 1 is disposed, for example, on a dashboard 5 (also referred to as an instrument panel) of a vehicle 2 traveling on a road surface. A windshield 3 (also referred to as a front shield) is disposed above the dashboard 5 of the vehicle 2. The head-up display 1 is disposed inside the dashboard 5.

[0018] The head-up display 1 is mounted on the vehicle 2, projects an image onto an object capable of transmitting and reflecting light, and forms a virtual image on a side of the object opposite to an observer.

[0019] For example, the head-up display 1 can display a virtual image represented by image light to a user, such as a driver, by reflecting the image light, which represents the image emitted from the image generation device 50, onto a display medium such as the windshield 3 or a translucent combiner. In other words, the head-up display 1 projects the image light emitted from the image generation device 50 onto the windshield 3 or display medium, thereby displaying the image indicated by the image light on the windshield 3 or display medium. As a result, the image projected onto the windshield 3 of the vehicle 2 is visible to the user. Figures 1 and onward of this embodiment illustrate the case in which the head-up display 1 projects image light onto the windshield 3.

[0020] Here, the image light is light that represents image information, including numbers, letters, and figures, and is displayed as a virtual image in front of the windshield 3. The image can be a still image or a moving image, and is an image of numbers, letters, and figures.

[0021] As shown in Figures 3 to 5, the head-up display 1 comprises a housing 10, an image generation device 50, one or more reflective mirrors 30, and an elastic part 130.

[0022] The housing 10 is a housing that accommodates the image generation device 50 and one or more reflective mirrors 30. The housing 10 is made of resin material or the like and constitutes the outer shell of the head-up display 1. The housing 10 is fixed to the vehicle 2 while attached to the dashboard 5. A housing opening is formed on the Z-axis positive side of the housing 10 to allow image light to pass through and be emitted to the outside. A dust cover 40 is placed in the housing opening.

[0023] The housing 10 has an inner cover 12 and an outer shell 11.

[0024] The inner cover 12 is housed in the outer shell 11 and is positioned to divide the internal space of the outer shell 11 into a space on the vertically upward side and a space on the vertically downward side. The inner cover 12 can suppress stray light from the image light emitted by the image generation device 50, external light incident from outside the head-up display 1, etc.

[0025] The outer shell 11 is a housing that contains the inner cover 12, the image generation device 50, and one or more reflective mirrors 30. The outer shell 11 forms the outer shell of the head-up display 1. The outer shell 11 may be an example of the housing 10.

[0026] Inside the outer shell 11, an insertion portion 100 is formed that can support the reflective mirror 30 by receiving the fixing portion 33 of the reflective mirror 30, which is inserted along the insertion direction. In this embodiment, since the reflective mirror 30 has a pair of fixing portions 33, the outer shell 11 has a pair of insertion portions 100 that correspond one-to-one with the pair of fixing portions 33. The insertion direction is the direction in which the reflective mirror 30 is inserted into the insertion portion 100 of the housing 10 when attaching the reflective mirror 30 to the housing 10.

[0027] As shown in Figure 4, the insertion portion 100 is a rib of the outer shell portion 11 formed to support the reflective mirror 30 by the engaging portion 113. The insertion portion 100 supports the fixing portion 33 of the reflective mirror 30 so that image light from the image generation device 50 is incident on the reflective surface of the reflective mirror 30. The insertion portion 100 extends along a predetermined direction to receive the fixing portion 33 as it slides in the insertion direction. The length of the insertion portion 100 is equivalent to the amount of slide (movement) of the fixing portion 33 from the time it starts to insert into the insertion portion 100 until it stops.

[0028] The insertion portion 100 has an opening 101, a bottom portion 102, a first rib 110, a second rib 120, and an engagement portion 113.

[0029] A fixing part 33 that slides in the insertion direction is inserted into the opening 101. In other words, the opening 101 becomes the entrance for the fixing part 33.

[0030] The bottom portion 102 is positioned at the end of the insertion portion 100 on the Z-axis negative side. The bottom portion 102 is configured to support one end edge (the Z-axis negative side edge) of the fixing portion 33 by contacting the Z-axis negative side end face of the fixing portion 33 inserted into the insertion portion 100.

[0031] When the fixing portion 33 is inserted into the insertion portion 100, the first rib 110 has a first surface 111 facing the fixing portion 33. The first surface 111 faces the back surface 31b of the reflective mirror 30 and extends along the back surface 31b. The back surface 31b of the reflective mirror 30 is the surface on the negative X-axis side of the reflective mirror 30.

[0032] The second rib 120 is positioned on the X-axis positive side than the first rib 110. When the fixing part 33 is inserted into the insertion part 100, the second rib 120 has a second surface 122 facing the fixing part 33. The second surface 122 faces the surface 31a of the reflective mirror 30. The surface 31a of the reflective mirror 30 is the mirror surface on the X-axis positive side of the reflective mirror 30. The second surface 122 extends along the Z-axis direction.

[0033] The engaging portion 113 is connected to the first rib 110 and can fix the fixing portion 33 by engaging with the other end edge of the fixing portion 33 (the end edge on the Z-axis positive side). The engaging portion 113 is a long hooking portion that extends from the first surface 111 along the Z-axis positive direction. When the fixing portion 33 is inserted into the insertion portion 100, the insertion portion 100 can be fixed so that the fixing portion 33 does not come out because the engaging portion 113 catches and engages with the fixing portion 33.

[0034] The inner cover 12 has cover insertion holes 12a formed at positions corresponding to the insertion portions 100 of the outer shell 11 so as not to interfere with the reflective mirror 30. In this embodiment, since a pair of insertion portions 100 are formed in the outer shell 11, the inner cover 12 also has a pair of cover insertion holes 12a formed so as to correspond one-to-one with the pair of insertion portions 100. Therefore, when attaching the reflective mirror 30 to the housing 10, it is inserted into the cover insertion holes 12a of the inner cover 12 while simultaneously inserting it into the insertion portions 100 of the outer shell 11.

[0035] The reflective mirror 30 is attached to the housing 10 and can reflect the image light emitted by the image generation device 50. Figure 2 illustrates a case in which multiple reflective mirrors 30 are mounted on the head-up display 1.

[0036] The multiple reflective mirrors 30 include a first reflective mirror 30a and a second reflective mirror 30b.

[0037] The first reflective mirror 30a and the second reflective mirror 30b are arranged in the housing 10 so as to face each other at a predetermined distance apart. The first reflective mirror 30a is positioned on the rear side of the housing 10 of the vehicle 2 so as to face the emission surface of the image generation device 50, which is located on the front side of the housing 10 of the vehicle 2, and the second reflective mirror 30b. The second reflective mirror 30b is positioned parallel to the first reflective mirror 30a along the front-rear direction of the vehicle 2. As a result, the first reflective mirror 30a reflects the image light emitted by the image generation device 50 toward the second reflective mirror 30b. The second reflective mirror 30b also reflects the image light reflected by the first reflective mirror 30a toward the dustproof cover 40 through the housing opening.

[0038] The first reflective mirror 30a and the second reflective mirror 30b are described in reference to the drawings, and the number of reflective mirrors 30 may be one or three or more, and is not limited to this embodiment.

[0039] The reflective mirror 30 is a concave mirror, a convex mirror, or a plane mirror. In this embodiment, the first reflective mirror 30a is a plane mirror. The second reflective mirror 30b is a concave mirror having a free-form surface. In this embodiment, each of the reflective mirrors 30 is a plate-shaped mirror with a rectangular shape that is elongated in the Y-axis direction. The shape of the reflective mirror 30 is not particularly limited and may be polygonal or circular.

[0040] As shown in Figures 5 to 7, the reflective mirror 30 has a mirror body 32 on one side facing the positive X-axis direction with a reflective surface formed thereon, and fixing parts 33 provided at both ends of the mirror body 32 in the Y-axis direction. In this embodiment, the reflective mirror 30 is a rectangular plate, and the mirror body 32 is also a rectangular plate.

[0041] The mirror body 32 has a first side surface 31c located on the positive Z-axis side, and a second side surface 31d which is the opposite side of the first side surface 31c and located on the negative Z-axis side.

[0042] An elastic portion 130 is positioned between the reflective mirror 30 and the housing 10. In this embodiment, the elastic portion 130 is positioned between the mirror body 32 and the housing 10. Specifically, the elastic portion 130 is elongated along the Y-axis and is positioned between the second side surface 31d and the inner cover 12, so as to be aligned with the second side surface 31d. In other words, the elastic portion 130 is sandwiched between the reflective mirror 30 and the inner cover 12.

[0043] As shown in Figure 7, the elastic portion 130 is provided on the back surface 31b side of the reflective mirror 30, which has a surface 31a and a back surface 31b. In other words, the elastic portion 130 is located on the negative X-axis side. Therefore, the surface of the elastic portion 130 on the positive X-axis side has a step formed relative to the surface 31a. This prevents the elastic portion 130 from being reflected in another reflective mirror 30 that is positioned opposite the reflective mirror 30.

[0044] Furthermore, the reflective mirror 30 is positioned on the housing 10 at an angle with respect to the running surface (parallel to the straight line V1 shown by the dashed line in Figure 7). Therefore, when the elastic part 130 is bent as shown by the dashed line, the elastic part 130 is hidden by the reflective mirror 30 when viewed along the straight line V1 parallel to the running surface. This further suppresses the elastic part 130 from being reflected in another reflective mirror 30 positioned opposite the reflective mirror 30.

[0045] The thickness of the elastic part 130 (width in the X-axis direction) is smaller than the thickness of the reflective mirror 30 (width in the X-axis direction). In other words, the thickness of the elastic part 130 is thinner than the thickness of the mirror body 32 and thinner than the thickness of the fixing part 33.

[0046] The elastic portion 130 may be integrally connected to the reflective mirror 30 or the housing 10. For example, the elastic portion 130 and the reflective mirror 30 may be integrally formed by resin molding. Figures 5 and 6 illustrate an example where the elastic portion 130 and the reflective mirror 30 are integrally formed.

[0047] The elastic part 130 is a spring-shaped body. Therefore, the elastic part 130 can be elastically deformed in the Z-axis direction.

[0048] Furthermore, as shown in Figure 8, the elastic portion 130 may have a cut portion 131 that is cut in the central part in the longitudinal direction. In this case, even if the housing 10 vibrates, the elastic portion 130 can absorb the vibration by elastically deforming, thereby suppressing rattling and resonance of the reflective mirror 30.

[0049] The elastic part 130 may be a cushioning material. The elastic part 130 may be made of, for example, cotton and a resin material such as rubber, or a foam material. In this case as well, the elastic part 130 can be elastically deformed in the Z-axis direction.

[0050] The pressure applied to the elastic portion 130 is preferably 0.5 to 4.6 times the weight of the reflective mirror 30. The direction of this pressure is in the positive Z-axis direction.

[0051] This is based on "JIS D 1601-1995 Automotive Parts Vibration Test Methods". Specifically, in this embodiment, the vibration condition classification of the head-up display 1 can be defined as "Type A" or "Type B" of "Type 1" as follows. Type 1: Primarily passenger car type Type A: Mounted on the vehicle body or suspension system springs, and exhibiting relatively little vibration. Type B: Mounted on the vehicle body or suspension system springs, and in cases where vibrations are relatively large.

[0052] In this case, the test vibration acceleration range for type A is 5 to 30 m / s². 2 The test vibration acceleration range for type B is 30-45 m / s². 2 Therefore, the acceleration range is 5-45 m / s². 2 This is the result.

[0053] According to Newton's equation of motion, "F=ma," if the value obtained by multiplying the weight m of the reflecting mirror 30 by the acceleration a is "F=spring load," then the forces in the reflecting mirror 30 are balanced, and it is considered that the reflecting mirror 30 will not rattle inside the housing 10 while the vehicle 2 is in motion.

[0054] For example, if the weight m = 0.06 kg and the acceleration a = 5 to 45 m / s², 2 In this case, F = 0.06 kg × 5 ~ 45 m / s 2 This corresponds to 0.3~2.7N (0.03~0.275kgf).

[0055] This indicates that the force is approximately 0.5 to 4.6 times the weight. Furthermore, by changing the weight m and / or acceleration a, the force can be adjusted to 0.2 to 5 times the weight of the reflective mirror 30.

[0056] If there is a spring load reaction force of 0.2 to 5 times the weight of the reflective mirror 30, the force that would cause the reflective mirror 30 to move due to vibrations when the vehicle 2 is in motion can be suppressed. As a result, it is expected that vibrations (rattling and resonance) of the reflective mirror 30 will be suppressed.

[0057] A fixing portion 33 for attaching the mirror body 32 to the housing 10 is provided at the edge of the mirror body 32. In this embodiment, the fixing portion 33 is connected to both the edge of the mirror body 32 on the positive Y-axis side and the edge of the mirror body 32 on the negative Y-axis side. Each of the pair of fixing portions 33 is attached to the housing 10. With the pair of fixing portions 33 attached to the housing 10, the reflective mirror 30 is supported by the housing 10 in a predetermined position.

[0058] The fixing portion 33 has a notch 35 cut out from the edge of the reflective mirror 30 toward the mirror body 32. Specifically, the fixing portion 33 on the positive Y-axis side of the pair of fixing portions 33 has a notch 35 cut out from the edge of the fixing portion 33 on the positive Y-axis side toward the mirror body 32. In addition, the fixing portion 33 on the negative Y-axis side of the pair of fixing portions 33 has a notch 35 cut out from the edge of the fixing portion 33 on the negative Y-axis side toward the mirror body 32.

[0059] The notch 35 is formed to engage with the engaging portion 113 of the insertion portion 100 when the reflective mirror 30 is attached to the insertion portion 100 of the housing 10. The notch 35 is located on the Z-axis positive side of the fixing portion 33 when the reflective mirror 30 is attached to the insertion portion 100 of the housing 10.

[0060] In this embodiment, the reflective mirror 30 is supported by the housing 10 in a position that slopes downward toward the rear of the vehicle 2.

[0061] The fixing portion 33 may further have a protruding portion 34. When the fixing portion 33 is inserted into the insertion portion 100, the protruding portion 34 may protrude toward the second surface 122. In this case, the protruding portion 34 may be in contact with the second surface 122. As a result, the back surface 31b of the reflective mirror 30 may be pressed against the engaging portion 113 so that the fixing portion 33 is in an upright position relative to the second surface 122.

[0062] Furthermore, an inclined surface 34a may be formed on the Z-axis negative side of the protruding portion 34. In this case, when inserting the reflective mirror 30 into the insertion portion 100, the inclined surface 34a is guided by the second rib 120 which forms the opening 101. This makes it easier to insert the reflective mirror 30 into the insertion portion 100.

[0063] A guide 37 may be further formed on the surface 31a of the reflective mirror 30. The guide 37 is formed on the X-axis positive side surface of the fixing portion 33 so as to be along the longitudinal direction of the second surface 122 of the second rib 120. When inserting the reflective mirror 30 into the insertion portion 100, the guide 37 is guided by the second rib 120 of the insertion portion 100. This makes it easier to insert the reflective mirror 30 into the insertion portion 100.

[0064] Furthermore, the guide 37 may be in contact with the second rib 120. In this way, the guide 37 may be positioned to cover the gap between the second surface 122 and the fixing portion 33.

[0065] The image generation device 50 generates an image and outputs image light indicating the generated image so that the image is projected onto the windshield 3. Specifically, the image generation device 50 emits image light from its display unit. The image light emitted from the display unit of the image generation device 50 is reflected by one or more reflective mirrors 30 and passes through the dustproof cover 40 of the housing opening, and is emitted to the outside of the head-up display 1. In other words, by emitting image light, the image generation device 50 can project a predetermined image onto the windshield 3 or a display medium. The user can perceive a virtual image when the image light is reflected by the windshield 3 or the display medium. The image generation device 50 is, for example, a liquid crystal display device having a liquid crystal display or the like.

[0066] Such an image generation device 50 is attached to the bottom surface of the housing 10. The image generation device 50 is composed of, for example, a liquid crystal display element such as a liquid crystal display, a focusing lens, a light-emitting module such as an LED, and a container that houses these.

[0067] <Effects and Effects> Next, the effects and advantages of the head-up display 1 in this embodiment will be described.

[0068] As described above, the head-up display 1 of Technology 1 according to this embodiment comprises an image generation device 50, a plate-shaped mirror (reflective mirror 30) having a reflective surface, and a housing 10 that houses the image generation device 50 and the mirror (reflective mirror 30). An elastic part 130 is positioned between the side surface (second side surface 31d) of the mirror (reflective mirror 30) and the housing 10, and the elastic part 130 is sandwiched between the mirror (reflective mirror 30) and the housing 10.

[0069] According to this, even if the housing 10 vibrates, the elastic part 130 can absorb that vibration, thereby suppressing rattling and resonance of the reflective mirror 30.

[0070] Therefore, this head-up display 1 can suppress the decrease in visibility.

[0071] Furthermore, the head-up display 1 of Technology 2 according to this embodiment is the same as the head-up display 1 described in Technology 1. In this case, the thickness of the elastic portion 130 is smaller than the thickness of the reflective mirror 30 (mirror), and the elastic portion 130 is provided on the back surface 31b side of the reflective mirror 30 (mirror), which has a surface surface 31a and a back surface 31b.

[0072] According to this, if the head-up display 1 is equipped with multiple reflective mirrors 30, it is possible to suppress the reflection of the elastic part 130 on another reflective mirror 30. Furthermore, it is possible to suppress the reflection of the elastic part 130 on the windshield 3 or the display medium.

[0073] Furthermore, by making the thickness of the elastic part 130 thinner than that of the reflective mirror 30, the elastic force does not become too strong, and the elastic part 130 becomes more flexible. As a result, rattling and resonance of the reflective mirror 30 can be further suppressed.

[0074] Furthermore, the head-up display 1 of Technology 3 according to this embodiment is the same as the head-up display 1 described in Technology 2. In this case, the head-up display 1 is mounted on a vehicle 2 that travels on a driving surface, the reflective mirror 30 (mirror) is positioned in the housing 10 so as to be tilted with respect to the driving surface, and when viewed along the driving surface, the elastic part 130 is hidden by the reflective mirror 30 (mirror) in a bent state.

[0075] According to this, if the head-up display 1 is equipped with multiple reflective mirrors 30, it is possible to further suppress the reflection of the elastic part 130 on another reflective mirror 30. Furthermore, it is possible to further suppress the reflection of the elastic part 130 on the windshield 3 or the display medium.

[0076] Furthermore, the head-up display 1 of Technology 4 according to this embodiment is the head-up display 1 described in any one of Technologies 1 to 3. In this case, the pressure applied to the elastic part 130 is 0.5 to 4.6 times the weight of the reflective mirror 30 (mirror).

[0077] According to this, even if the housing 10 vibrates, the force that would cause the reflective mirror 30 to move due to this vibration can be suppressed. Therefore, it is expected that rattling and resonance of the reflective mirror 30 can be further suppressed.

[0078] Furthermore, the head-up display 1 of Technology 5 according to this embodiment is the head-up display 1 described in any one of Technologies 1 to 4. In this case, the elastic part 130 is a spring body shaped like an arch.

[0079] According to this, even if the reflective mirror 30 is displaced circumferentially around the normal direction of the surface 31a, the arch-shaped elastic part 130 remains positioned between the housing 10 and the reflective mirror 30. In other words, the arch-shaped elastic part 130 can follow the circumferential displacement of the reflective mirror 30. As a result, the elastic part 130 can bend in the Z-axis direction. Consequently, even if the housing 10 vibrates, the elastic part 130 can absorb the vibration, thereby further suppressing rattling and resonance of the reflective mirror 30.

[0080] Furthermore, the head-up display 1 of Technology 6 according to this embodiment is the head-up display 1 described in Technology 5. In this case, the elastic portion 130 has a cut portion 131 which is cut in the central part in the longitudinal direction.

[0081] According to this, when the housing 10 vibrates, the elastic part 130 becomes more elastically deformable. As a result, the elastic part 130 can absorb the vibration, thus further suppressing rattling and resonance of the reflective mirror 30.

[0082] Furthermore, the head-up display 1 of Technology 7 according to this embodiment is the head-up display 1 described in any one of Technologies 1 to 4. In this case, the elastic part 130 is a cushioning material.

[0083] According to this, the elastic part 130 can bend in the Z-axis direction. As a result, even if the housing 10 vibrates, the elastic part 130 can absorb the vibration, thereby further suppressing rattling and resonance of the reflective mirror 30.

[0084] In particular, if a widely available material is used as the elastic part 130, it is expected that rattling and resonance of the reflective mirror 30 can be easily suppressed.

[0085] Furthermore, the head-up display 1 of Technology 8 according to this embodiment is the head-up display 1 described in any one of Technologies 1 to 4. In this case, the elastic part 130 is integrally connected to the reflective mirror 30 (mirror) or the housing 10.

[0086] According to this, it becomes unnecessary to separately place the elastic part 130, which is expected to improve the ease of assembly of the head-up display 1.

[0087] (Other variations) The head-up display relating to this disclosure has been described above based on the embodiments described above, but this disclosure is not limited to these embodiments. Various modifications to the embodiments that a person skilled in the art can conceive of may also be included in the scope of this disclosure, as long as they do not deviate from the spirit of this disclosure.

[0088] Furthermore, this disclosure also includes forms obtained by applying various modifications to the above embodiments that a person skilled in the art could conceive, and forms realized by arbitrarily combining the components and functions of the embodiments without departing from the spirit of this disclosure. [Industrial applicability]

[0089] This disclosure is applicable to head-up displays installed in vehicles. [Explanation of symbols]

[0090] 1. Head-up display 2 vehicles 10 cabinets 30 Reflective Mirrors (Mirrors) 30a First Reflecting Mirror (Mirror) 30b Second Reflecting Mirror (Mirror) 31a surface 31b back side 50 Image generation device 130 Elastic part 131 Cutting section

Claims

1. Image generation device and A plate-shaped mirror having a reflective surface, The system comprises the image generating device and a housing that accommodates the mirror, An elastic portion is positioned between the side surface of the mirror and the housing. The elastic portion is sandwiched between the mirror and the housing. Head-up display.

2. The thickness of the elastic portion is smaller than the thickness of the mirror. The elastic portion is provided on the back side of the mirror, which has a front surface and a back surface. The head-up display according to claim 1.

3. The aforementioned head-up display is mounted on a vehicle traveling on a road surface, The mirror is positioned in the housing so as to be in an inclined position with respect to the running surface. When viewed along the aforementioned running surface, the elastic portion is hidden by the mirror in a bent state. The head-up display according to claim 2.

4. The pressure applied to the elastic part is 0.5 to 4.6 times the weight of the mirror. A head-up display according to any one of claims 1 to 3.

5. The elastic part is a spring body shaped like an arch. A head-up display according to any one of claims 1 to 3.

6. The elastic portion has a cut portion that is cut in the central part in the longitudinal direction. The head-up display according to claim 5.

7. The elastic part is a cushioning material. A head-up display according to any one of claims 1 to 3.

8. The elastic portion is integrally connected to the mirror or the housing. A head-up display according to any one of claims 1 to 3.

Images