Head-up display device

Abstract

A head-up display device that achieves high luminance efficiency in light rays from both light sources. The present invention is provided with: a movable correction mirror (130) positioned on the optical path of display light (L1) representing a virtual image (IMG1) and configured so as to be capable of rotating between a reflection position at which display light (L2) representing a real image (IMG2) is reflected toward a windshield (30) and a retracted position at which the movable correction mirror (130) is retracted from the optical path of the display light (L1) representing the virtual image (IMG1); and a drive mechanism (133) that drives the movable correction mirror (130) to rotate between a reflective position and a retracted position, the liquid crystal display panel (111) is disposed on the opposite side of the reflective surface of the movable correction mirror (130), and when the movable correction mirror (130) is rotated to the reflective position, the display light (L2) is emitted to the windshield (30), thereby causing the driver (40) to visually recognize the real image (IMG2), and the driver (40) to display the real image (IMG2). In a state in which the movable correction mirror (130) is rotated to the retracted position, display light (L1) is emitted to the windshield (30), thereby causing the driver (40) to visually recognize the virtual image (IMG1).

Description

Technical Field

[0001] The present invention relates to a head-up display device for displaying the desired information to a visual observer. Background Technology

[0002] Previously, head-up display devices, such as those described in Patent Document 1, were known. These head-up display devices have two displays. By passing the light from one display through a semi-transparent mirror and reflecting the light from the other display, the light paths reaching the windshield are of different lengths, allowing the driver to perceive two virtual images corresponding to the two display lights.

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent No. 4941070 Summary of the Invention

[0006] The technical problem that the invention aims to solve

[0007] However, in the aforementioned conventional head-up display devices, for display light from a light source on one display, only an amount corresponding to the reflectivity of the transflective mirror is reflected, resulting in insufficient light emission. Similarly, for display light from a light source on another display, only an amount corresponding to the transmittance of the transflective mirror is transmitted, thus also insufficient light emission. Consequently, there is a problem of reduced luminance efficiency for any display light source.

[0008] Therefore, the present invention was made in view of the above-mentioned problems, and its object is to provide a head-up display device that can obtain high brightness efficiency in light from two light sources.

[0009] Technical solutions adopted to solve technical problems

[0010] The present invention is a head-up display device 100, which has an emission outlet 17. Display lights M1, L1 / M2, L2 emitted from the emission outlet 17 are emitted toward a light-transmitting member 30, allowing a vehicle driver 40 to visually identify the display images IMG2 and IMG1 represented by the display lights M1, L1 / M2, L2. The head-up display device 100 includes: a first display unit 121 having a first display element through which light emitted from a first light source 125 passes and displays a first display image IMG2; a second display unit 111 having a second display element through which light emitted from a second light source 115 passes and displays a second display image IMG1; and a first reflector 130 located in the optical path of the second light rays M1 and L1 representing the second display image IMG1 displayed on the second display unit 111, configured to reflect the first display image IMG1 displayed on the first display unit 121. The image IMG2 rotates between a reflection position where the first rays M2 and L2 reflect onto the light-transmitting component 30 and a retreat position where they are withdrawn from the light path of the second rays M1 and L1; and a drive unit 133 drives the first reflector 130 to rotate between the reflection position and the retreat position, wherein the second display unit 111 is disposed on the side opposite to the reflective surface of the first reflector 130 located at the reflection position. When the first reflector 130 is rotated to the reflection position, the driver 40 visually recognizes the first displayed image IMG2 by emitting the first rays M2 and L2 toward the light-transmitting component 30. When the first reflector 130 is rotated to the retreat position, the driver 40 visually recognizes the second displayed image IMG1 by emitting the second rays M1 and L1 toward the light-transmitting component 30.

[0011] Invention Effects

[0012] According to the present invention, a head-up display device is provided that can achieve high brightness efficiency in light from both light sources. Attached Figure Description

[0013] Figure 1 This is a conceptual diagram showing the configuration location of a head-up display device according to an embodiment of the present invention in a vehicle.

[0014] Figure 2 This is a schematic cross-sectional view showing the overall structure of the head-up display device.

[0015] Figure 3 It is a schematic cross-sectional view showing the display state of the virtual image in the head-up display device.

[0016] Figure 4 It is a schematic cross-sectional view showing the display state of a real image in a head-up display device. Detailed Implementation

[0017] The following uses Figures 2 to 1 A head-up display device according to one embodiment of the present invention will be described. For example... Figure 1 As shown, the head-up display device 100 of this embodiment is disposed below the windshield 30 of the vehicle 10 (for example, inside the instrument panel), so that the driver 40 can visually recognize the real image IMG2 inside the vehicle through the windshield 30 (light-transmitting component) and visually recognize the virtual image IMG1 outside the vehicle.

[0018] <An Overview of Head-Up Display Devices>

[0019] Figure 2 This is a diagram showing the overall structure of the head-up display device 100 according to this embodiment. Figure 2 In the head-up display device 100, there are a first display 120, a second display 110, a reflector 13 and a control device 15, which are housed in a housing 160.

[0020] <Outer shell>

[0021] The outer casing 160 has an upper casing 161 and a lower casing 162.

[0022] An opening 17 (emission outlet) for emitting the display lights L1 and L2 (described later) is provided on the upper housing 161, and a window 163 for protecting the interior is provided on the opening 17. The window 163 is made of a light-transmitting resin (e.g., acrylic) and is curved in this example.

[0023] In addition, a light-shielding wall 161a is provided on the upper housing 161 to prevent external light other than sunlight from entering the first display 120 and the second display 110, which would make it difficult to see the virtual image IMG1 and the real image IMG2 (the screen would appear washed out). The light-shielding wall 161a is flat and is formed in a way that it hangs down obliquely from the upper part of the upper housing 161.

[0024] <First Display>

[0025] The first display 120 includes a light-emitting diode 125 (first light source), a liquid crystal display panel 121 (first display unit) disposed along the light path closer to the opening 17 than the light-emitting diode 125, lens components 122, 123, 124, a rigid wiring board 126, a housing 127, and a heat sink 128.

[0026] Light-emitting diodes 125 emit light in the visible wavelength range (e.g., white light). Multiple light-emitting diodes 125 are arranged close to each other and mounted on a rigid wiring board 126.

[0027] The lens component 122 has a plurality of convex lens portions 122a. Each convex lens portion 122a is disposed at a position corresponding to the light-emitting diode 125, and focuses the light emitted by the light-emitting diode 125.

[0028] The liquid crystal display panel 121 has a TFT (Thin Film Transistor) type first display element (not shown), which transmits light M2 emitted from the light-emitting diode 125 and passed through lens members 122, 123, and 124 to generate display light L2, and displays the aforementioned real image (first display image) IMG2 as a display image image formed in front of the driver 40. The first display element is capable of forming display light representing any image according to a control signal sent from the control device 15.

[0029] The housing 127 is made of resin, and a liquid crystal display panel 121 is provided at the open end of the housing 127.

[0030] Heat sink 128 is disposed on the rear surface of rigid circuit board 126. Heat sink 128 dissipates the heat emitted by light-emitting diode 125.

[0031] <Second Display>

[0032] The second display 110 includes a light-emitting diode 115 (second light source), a liquid crystal display panel 111 (second display unit) disposed along the light path closer to the opening 17 than the light-emitting diode 115, lens components 112, 113, 114, a rigid wiring board 116, a display holder 117, and a housing 118.

[0033] Light-emitting diodes 115 emit light in the visible wavelength range (e.g., white light). Multiple light-emitting diodes 115 are arranged close to each other and mounted on a rigid wiring board 116.

[0034] Lens components 112, 113, and 114 are made of light-transmitting resin such as polycarbonate and are disposed between the liquid crystal display panel 111 and the light-emitting diode 115. Lens component 112 has multiple convex lens portions 112a. Each convex lens portion 112a is respectively disposed at a position corresponding to the light-emitting diode 115, so as to focus the light emitted by the light-emitting diode 115.

[0035] The liquid crystal display panel 111 has a TFT-type second display element (not shown), which transmits light M1 emitted from the light-emitting diode 115 and passed through lens members 112, 113, and 114 to generate display light L1, and displays a virtual image (second display image) IMG1 as a display image imaged in front of the driver 40. The second display element can form display light representing any image according to a control signal sent from the control device 15. In addition, the liquid crystal display panel 111 is held in front of the opening of the housing 118 by a display holder 117.

[0036] The housing 118 is made of black resin and is roughly cylindrical in shape.

[0037] Furthermore, the liquid crystal display panel 111 of the second display 110 is positioned along the optical path of the display light L1 (in the order of the optical path) closer to the opening 17 than the position of the second optical focus F2 of the imaging optical system, which includes the windshield 30 and the reflector 140 described later.

[0038] In addition, Figure 2 In reality, countless rays of light (display light) are emitted from the liquid crystal display panel 121 and the liquid crystal display panel 111, but here, the ray of strongest light emitted from the center of the liquid crystal display panel 121 and passing through the center of the eye chamber is taken as the representative ray and is represented by display light L2, and the ray of strongest light emitted from the center of the liquid crystal display panel 111 and passing through the center of the eye chamber is taken as the representative ray and is represented by display light L1. Figure 2 In the diagram, for convenience, solid lines represent display light L2 and dashed lines represent display light L1.

[0039] In addition, in the first display 120 and the second display 110, besides the above, optical components such as condenser lenses, biconvex lenses, diffuser plates, and polarizing plates can be arranged at any position on the rear side of their respective light-emitting diodes 125 and 115.

[0040] <Reflective section>

[0041] The reflector 13 reflects towards the windshield 30 the display light L2 representing the display image displayed on the liquid crystal display panel 121 and the display light L1 representing the display image displayed on the liquid crystal display panel 111.

[0042] The reflective part 13 includes a first reflective mirror part 13a and a second reflective mirror part 13b.

[0043] <First reflecting mirror section>

[0044] The first reflector section 13a includes: a reflector 150 that reflects the display light L2 emitted from the liquid crystal display panel 121 toward the movable correction mirror 130; and a movable correction mirror 130 (first reflector) that reflects the display light L2 emitted from the reflector 150 toward the second reflector section 13b. Furthermore, the surfaces of the reflector 150 and the movable correction mirror 130 are mirrored, and in order to correct the distortion of the display light L2 and thus the distortion of the image visually recognized by the driver 40, they have become complex free-form surfaces.

[0045] <Reflector>

[0046] The reflector 150 is positioned along the optical path of the display light L2 (in the order of the optical path) on the side closer to the opening 17 than the first display 120, and has a concave mirror (not shown) and a mirror holder (not shown), by which the concave mirror is held. Figure 2 As shown, the reflector 150 is positioned closer to the first display 120 than the first optical focal point F1 of the imaging optical system, which includes the windshield 30, the movable correction mirror 130, and the reflector 140. Furthermore, the reflector 150 reflects the display light L2 emitted from the liquid crystal display panel 121 and reflected by the movable correction mirror 130 at the aforementioned reflection position towards the movable correction mirror 130 positioned above the reflector 150.

[0047] <Modible Correction Mirror>

[0048] The movable correction mirror 130 has a concave mirror 131 (mirror body) and a mirror holder 132 (holder) for housing and holding the concave mirror 131.

[0049] The concave mirror 131 is formed, for example, by sputtering a coating, and is composed of a highly reflective mirror that reflects approximately 97% of the incident light. Alternatively, the concave mirror 131 may be composed of a transparent mirror that reflects approximately 90% of the incident light.

[0050] The mirror holder 132 is configured to be able to be driven by the drive mechanism 133 (drive unit) Figure 2 The movable adjustment mirror 130 rotates approximately horizontally around the drive mechanism 133 between the reflection position (shown by the solid line) and the retraction position (shown by the dashed line). The reflection position is where the movable adjustment mirror 130 is positioned in the optical path of the display light L1, causing the display light L1 to illuminate the back of the mirror holder 132 and reflecting the display light L2 towards the reflector 140. The retraction position is where the movable adjustment mirror 130 is positioned offset from the optical path of the display light L1, allowing the display light L1 to pass through and reflecting the display light L2 towards the reflector 150. The mirror holder 132 has an abutment portion 132b, which, when rotated by the drive mechanism 133, abuts against a stop portion 162a formed by the housing contact surface to position the movable adjustment mirror 130 (see reference). Figure 2The contact state becomes the aforementioned reflection position.

[0051] The drive mechanism 133 has, for example, a gearbox (not shown) and an electric motor (not shown), which are connected to the shaft 132a of the mirror holder 132 via a suitable coupling or the like.

[0052] Furthermore, in this example, the shaft 132a is positioned at the lower end of the mirror holder 132, thereby allowing the entire concave mirror 131 to be positioned within the optical path of the display light L1 (the second ray) or completely retracted from the optical path by rotating it. That is, assuming the shaft 132a is positioned at the center of the mirror holder 132, the entire concave mirror 131 cannot be completely retracted from the optical path of the display light L1, thus avoiding this situation.

[0053] When the movable correction mirror 130 is in the aforementioned reflective position, it folds back toward the reflector 140 and reflects the display light L2 (first ray) reflected by the reflector 150 from the approximately vertical direction. Furthermore, when the movable correction mirror 130 is in the aforementioned reflective position, the second display 110, which has a liquid crystal display panel 111, is located on the side opposite to the reflective surface of the concave mirror 131 of the movable correction mirror 130.

[0054] When the movable correction mirror 130 is in the aforementioned retracted position, the first display 120 is essentially not displaying. However, even if it is assumed to be displaying, the display light L1 indicating that the virtual image IMG1 displayed on the liquid crystal display panel 111 does not pass through the movable correction mirror 130.

[0055] <Second reflecting mirror section>

[0056] The second reflecting mirror section 13b has a reflector 140 whose surface is composed of a mirror.

[0057] <Reflector>

[0058] The reflector 140 is configured to rotate and includes a concave mirror 141 that reflects and projects display lights L1 and L2 onto the windshield of the vehicle, a reflector holder 142 that holds the concave mirror 141, and a drive mechanism 143.

[0059] The concave mirror 141 has a free-form surface, for example, formed by depositing aluminum (Al) onto a resin such as polycarbonate (PC) to form a reflective film. The mirror holder 142 is made of resin such as PBT. Alternatively, the concave mirror 141 and the mirror holder 142 may also be formed of metal such as aluminum.

[0060] The drive mechanism 143 has a linear guide rail 143a and a motor 143b. The fitting part 142a and the linear guide rail 143a provided on the mirror holder 142 are fastened together. By driving the motor 143b, the configuration angle of the concave mirror 141 held on the mirror holder 142 is adjusted, thereby adjusting the projection direction of the display light L1 and L2.

[0061] The reflector 140 reflects the display light L2 that is reflected and refracted by the movable correction mirror 130 at the aforementioned reflection position, or the display light L1 that enters from the liquid crystal display panel 111 without passing through the movable correction mirror 130, towards the opening 17 above. Furthermore, the display light L2 or display light L1 reflected by the reflector 140 is emitted into the windshield 30 through the window 163, and the driver 40 visually recognizes the display image represented by the display light L2 as a real image IMG2, or visually recognizes the display image represented by the display light L1 as a virtual image IMG1.

[0062] In particular, at this time, the reflector 140, in conjunction with the position of the driver 40's eyes, rotates via the drive mechanism 143, freely changing the emission direction of the display light L2 and display light L1, and adjusting the position of the image.

[0063] For example, when display light L2 displays the real image IMG2 and display light L1 displays the virtual image IMG1, it is sometimes desirable for their display surfaces to have different angles. For example, the virtual image IMG1 may be displayed at an angle relative to the road surface, while the real image IMG2 may be displayed vertically relative to the road surface. Correspondingly, by performing the aforementioned adjustment driven by the rotation of the drive mechanism 143, the display images can be displayed at angles suitable for both the real image IMG2 and the virtual image IMG1.

[0064] <Control Device>

[0065] The control device 15 is functionally equipped with a correction mirror control unit 15A and a concave mirror control unit 15B.

[0066] The correction mirror control unit 15A can make fine adjustments to the uniformity and position of the real image IMG2 by making fine adjustments to the angle of the concave mirror 131 via the drive mechanism 133.

[0067] The concave mirror control unit 15B can adjust the projection direction of the display light L1 and L2 by adjusting the arrangement angle of the concave mirror 141 via the drive mechanism 143 as described above.

[0068] In addition to the above, the control device 15 also has the function of controlling the display content and display switching of the liquid crystal display panel 121 and the liquid crystal display panel 111 (detailed description omitted). That is, although detailed description is omitted, the control device 15 controls the first display 120 and the second display 110 in a coordinated manner, performing functions such as turning on / off the light-emitting diode 125, turning on / off the light-emitting diode 115, and controlling the display content of the liquid crystal display panel 121 and the liquid crystal display panel 111, and generating display light L2 emitted from the first display 120 and display light L1 emitted from the second display 110.

[0069] Display of Real and Virtual Images

[0070] With the head-up display device described above, the driver 40 of vehicle 10 can visually identify the real image IMG2 on the front side of the windshield 30 by visually recognizing the display light L2 reflected by the windshield 30 from the inside of the vehicle, that is, from the driver 40's perspective. Additionally, the driver 40 can visually recognize the virtual image IMG1 on the inside side of the windshield 30 by visually recognizing the display light L1 reflected by the windshield 30 from the outside of the vehicle, that is, from the driver 40's perspective.

[0071] Figure 3 This diagram illustrates the state in which the virtual image IMG1 formed by the second display 110 is displayed on the head-up display device 100. As described above, in this case, the drive mechanism 133 is controlled by the correction mirror control unit 15A of the control device 15, and the movable correction mirror 130 rotates counterclockwise in the direction shown in the diagram with the center of axis 132a as the axis mentioned above, until it is about to touch the lower housing 162, and then retracts from the light path of the display light L1 to the retracted position. In addition, at this time, a stop (not shown) that protrudes toward the concave mirror 131 and abuts against the lower housing 162 may also be provided on the reflector holder 132.

[0072] Therefore, as described above, the display light L1 representing the virtual image IMG1 displayed on the liquid crystal display panel 111 does not pass through the movable correction mirror 130. The display light L1, which is incident on the reflector 140 from the liquid crystal display panel 111 without passing through the movable correction mirror 130, is reflected toward the opening 17 and emitted toward the windshield 30, so that the driver 40 can visually recognize the display image represented by the display light L1 as the virtual image IMG1.

[0073] Furthermore, as a virtual image IMG1, it displays vehicle information such as vehicle speed and engine speed, route guidance displays such as turn-by-turn navigation or maps, blind spot indicators, and warning displays such as speed limit warnings, all of which are highly necessary to alert the driver 40. Such displays provide a driving environment that reduces the need for eye movement and focusing distance adjustments.

[0074] Figure 4 This diagram illustrates the state in which the real image IMG2 formed by the first display 120 is displayed in the head-up display device 100. As described above, in this case, the drive mechanism 133 is controlled by the correction mirror control unit 15A of the control device 15, and the movable correction mirror 130 is rotated clockwise in the illustrated direction about the center of the axis 132a (until the abutted part 132b of the reflector holder 132 touches the stop part 162a), and is positioned with high precision at the reflection position in the optical path of the display light L1.

[0075] Therefore, as described above, the display light L2 representing the real image IMG2 displayed on the liquid crystal display panel 121 is reflected and refracted by the movable correction mirror 130 at the aforementioned reflection position, and is further reflected upwards by the opening 17 of the reflector 140. Furthermore, the display light L2 reflected by the reflector 140 is emitted into the windshield 30 via the window 163, allowing the driver 40 to visually recognize the display image represented by the display light L2 as a real image IMG2.

[0076] In addition, as real-image IMG2, such as entertainment content, assistants or agents of the driver 40, and characters representing these are displayed on the near-front side of the windshield 30 when viewed from the driver 40.

[0077] In addition, in real image IMG2 and virtual image IMG1, besides the text and icons that represent the above information, there is also a background part, which forms a roughly rectangular shape when viewed from above by the driver 40.

[0078] <Effects of the Implementation Method>

[0079] As described above, in this embodiment, the movable correction mirror 130 is configured to be driven by the drive mechanism 133 to rotate between a reflection position and a retraction position.

[0080] When the driver 40 visually recognizes the real image IMG2, the movable correction mirror 130 can be rotated to a reflecting position so that it is positioned in the optical path of the display light L1 from the second display 110, and the display light L2 from the first display 120 is reflected and emitted towards the windshield 30. As a result, a sufficient amount of light can be emitted compared to the case where a semi-transparent mirror is used in the movable correction mirror 130 to reflect the display light L2 from the first display 120 by an amount corresponding to a specified reflectivity.

[0081] On the other hand, when the driver 40 visually recognizes the virtual image IMG1, rotating the movable correction mirror 130 to the retracted position and disengaging it from the light path of the display light L1 allows the display light L1 from the second display 110 to be emitted towards the windshield 30. As a result, compared to the case where a semi-transparent mirror is used in the movable correction mirror 130 to transmit the display light L1 from the second display 110 in an amount corresponding to the transmittance of the semi-transparent mirror, a sufficient amount of light can be emitted.

[0082] According to this embodiment, the above results demonstrate that high brightness efficiency can be achieved for either the display light L2 from the first display 120 or the display light L1 from the second display 110. Furthermore, this reduces power consumption, thus enabling miniaturization of the head-up display device 100 through power saving and reducing the size of the light source emitting the display light.

[0083] Furthermore, in this embodiment, especially when visually recognizing the real image IMG2, it can be projected onto the windshield 30 via the path of first display 120 → reflector 150 → movable correction mirror 130 located in the reflection position → reflector 140 → opening 17. When visually recognizing the virtual image IMG1, it can be projected onto the windshield 30 via the path of second display 110 → (without passing through the movable correction mirror 130 located in the retracted position) → reflector 140 → opening 17.

[0084] Furthermore, in this embodiment, especially when the movable correction mirror 130 is rotated from the retracted position to the reflective position, it can be positioned by the stop 162a, so a low-precision and inexpensive electric motor can be used in the drive mechanism 133.

[0085] In addition, in this embodiment, the movable correction mirror 130 can be rotated between a reflecting position and a retracted position by driving the mirror holder 132 that houses the concave mirror 131 with the drive mechanism 133.

[0086] In addition, in this embodiment, the movable correction mirror 130 has the function of correcting the distortion of the display light L1, and the concave mirror 141 of the reflector 140 has a free-form surface, thereby improving the image quality of the real image IMG2 and the virtual image IMG1.

[0087] Furthermore, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from its spirit and technical concept.

[0088] (1) In the case of omitting reflector 140

[0089] In the above embodiment, a reflector 140 is configured to be provided between the movable correction mirror 130 and the opening 170 along the optical path of the display lights L2 and L1, reflecting the display lights L2 and L1 from the movable correction mirror 130 toward the opening 170, but is not limited thereto. That is, the present invention can also be applied to structures that do not have the above-described reflector 140, such as those described in Japanese Utility Model Application No. 63-164038, and the same effects as the above embodiment can be obtained.

[0090] That is, in this case, when the virtual image is displayed, similarly as described above, the movable correction mirror 130 is retracted to the retracted position by the control of the correction mirror control unit 15A of the control device 15, indicating that the display light L1 of the virtual image IMG1 displayed on the liquid crystal display panel 111 is not emitted through the movable correction mirror 130 but through the opening 17 to the windshield 30, and the driver 40 can visually recognize the display image represented by the display light L1 as the virtual image IMG1.

[0091] When displaying a real image, the movable correction mirror 130 is set to a reflective position under the control of the correction mirror control unit 15A of the control device 15, indicating that the display light L2 of the real image IMG2 displayed on the liquid crystal display panel 121 is reflected by the movable correction mirror 130. The display light L2 reflected and refracted by the movable correction mirror 130 in the reflective position is emitted into the windshield 30 through the opening 17, and the driver 40 can visually recognize the display image represented by the display light L2 as a real image IMG2.

[0092] (2) Other

[0093] Furthermore, the aforementioned horizontal and vertical directions are shown with reference to the horizontal and vertical directions of the vehicle 10, but the reference for each direction is not limited to this. Depending on the internal shape of the instrument panel and the shape of the housing 160, the device as a whole is tilted at a predetermined angle while maintaining the relative positional relationship of the configuration of each optical component is also included in the present invention.

[0094] In addition to the methods described above, the methods of the above embodiments or their variations can also be appropriately combined and utilized.

[0095] Furthermore, although not all examples are provided, the present invention can be implemented with various modifications without departing from its spirit.

[0096] Explanation of reference numerals in the attached figures

[0097] 10… vehicles;

[0098] 13…reflective part;

[0099] 13a…First reflecting mirror section;

[0100] 13b…Second reflecting mirror section;

[0101] 15…control devices;

[0102] 15A…Correction mirror control unit;

[0103] 15B… Concave mirror control unit;

[0104] 17…Opening (ejection port);

[0105] 30… Windshield (light-transmitting component);

[0106] 40…drivers;

[0107] 100… Head-up display device;

[0108] 110…Second monitor;

[0109] 111…Liquid crystal display panel (second display unit);

[0110] 112…lens component;

[0111] 112a…convex lens section;

[0112] 113…lens component;

[0113] 114…lens components;

[0114] 115…Light Emitting Diode (Second Light Source);

[0115] 116… Rigid wiring board;

[0116] 117… Monitor holder;

[0117] 118…shell;

[0118] 120…First monitor;

[0119] 121…Liquid crystal display panel (first display unit);

[0120] 122…lens component;

[0121] 122a…convex lens section;

[0122] 123…lens components;

[0123] 124…lens components;

[0124] 125… Light-emitting diode (first light source);

[0125] 126… Rigid wiring board;

[0126] 127…shell;

[0127] 128… Radiator;

[0128] 130… Movable correction mirror (first reflecting mirror);

[0129] 131… Concave mirror (main body of the reflecting mirror);

[0130] 132…Mirror holder (cage);

[0131] 132a… axis;

[0132] 132b…the part that is abutted;

[0133] 133… Drive mechanism (drive unit);

[0134] 140…reflector;

[0135] 141…concave mirror;

[0136] 142…Mirror holder;

[0137] 142a…Matching part;

[0138] 143… Drive mechanism;

[0139] 143a… Linear guide rail;

[0140] 143b… Electric motor;

[0141] 150…reflector;

[0142] 160…shell;

[0143] 161…Upper side shell;

[0144] 161a…Light-shielding wall;

[0145] 162...lower shell;

[0146] 162a…stop part;

[0147] 163… Window section;

[0148] 170… opening;

[0149] F1…first optical focus;

[0150] F2…Second optical focus;

[0151] IMG1…virtual image (second display image);

[0152] IMG2…Real Image (First Display Image);

[0153] L1… Display light (second ray);

[0154] L2… Display light (first ray);

[0155] M1… Display light (second ray);

[0156] M2… Display light (first ray).

Claims

1. A head-up display device having an emission port, wherein display light is emitted from the emission port toward a light-transmitting member, enabling a vehicle driver to visually recognize a displayed image represented by the display light, characterized in that, The head-up display device has: A first display unit has a first display element that allows light emitted from a first light source to pass through and displays a first display image; The second display unit has a second display element, through which light emitted from the second light source passes and displays a second display image; The first reflector, located in the optical path of the second light ray representing the second displayed image on the second display unit, is configured to rotate between a reflection position in which the first light ray representing the first displayed image on the first display unit is reflected toward the light-transmitting member and a retreat position in which it retreats from the optical path of the second light ray. as well as A driving unit drives the first reflector to rotate between the reflecting position and the retracted position, wherein... The second display unit is positioned on the side opposite to the reflective surface of the first reflector located at the reflection position. With the first reflector rotated to the reflecting position, the driver visually recognizes the first displayed image by projecting the first light beam onto the light-transmitting component. With the first reflector rotated to the retracted position, the driver visually recognizes the second displayed image by emitting the second light beam toward the light-transmitting component.

2. The head-up display device according to claim 1, characterized in that, The head-up display device further includes a second reflector, which reflects the first light reflected by the first reflector toward the emission outlet when the first reflector is rotated to the reflecting position by the drive unit, and reflects the second light from the second display unit toward the emission outlet when the first reflector is rotated to the retracted position by the drive unit. With the first reflector rotated to the reflecting position, the driver visually recognizes the first displayed image by reflecting the first light emitted from the first display unit and reflected by the first reflector toward the light-transmitting component through the second reflector. With the first reflector rotated to the retracted position, the second light from the second display unit is reflected by the second reflector toward the light-transmitting component, enabling the driver to visually recognize the second displayed image.

3. The head-up display device according to claim 2, characterized in that, The head-up display device also has a stop portion, which abuts against the first reflector and positions the first reflector in the retracted position when the first reflector is driven from the reflecting position toward the retracted position by the driving portion.

4. The head-up display device according to claim 1, characterized in that, The first reflector has: The main body of the reflector; and A retainer, which houses and holds the mirror body, is capable of rotating about a generally horizontal axis. The drive unit includes an electric motor that rotates the cage.

5. The head-up display device according to claim 2, characterized in that, The first reflector includes a correction mirror to correct distortion of the displayed light. The second reflecting mirror includes a concave mirror with a free-form surface.

6. The head-up display device according to claim 1, characterized in that, The first displayed image is a real image, and the second displayed image is a virtual image.

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