WO2024087683A1 - 一种虚像显示设备和交通工具 - Google Patents

一种虚像显示设备和交通工具 Download PDF

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Publication number
WO2024087683A1
WO2024087683A1 PCT/CN2023/102372 CN2023102372W WO2024087683A1 WO 2024087683 A1 WO2024087683 A1 WO 2024087683A1 CN 2023102372 W CN2023102372 W CN 2023102372W WO 2024087683 A1 WO2024087683 A1 WO 2024087683A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
unit
display device
virtual image
image display
Prior art date
Application number
PCT/CN2023/102372
Other languages
English (en)
French (fr)
Inventor
徐立国
黄志阳
毛磊
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2024087683A1 publication Critical patent/WO2024087683A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
    • B60R11/02—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays

Definitions

  • the embodiments of the present application relate to the field of display, and in particular to a virtual image display device and a vehicle.
  • the embodiments of the present application provide a virtual image display device and a vehicle for reducing the volume and thickness of the display device, thereby facilitating the integration of the device with the surrounding environment and improving the portability of the device.
  • an embodiment of the present application provides a virtual image display device 2000.
  • the virtual image display device 2000 includes a first housing 2100, a second housing 2200, a folding mechanism 2300, and a display system 2400.
  • the folding mechanism 2300 is used to connect the first housing 2100 and the second housing 2200.
  • the display system 2400 includes an image source 2410, a transflective unit 2420, and a reflective unit 2430.
  • the image source 2410 and the reflective unit 2430 are connected to the inner wall of the first housing 2100, and the transflective unit 2420 is connected to the second housing 2200.
  • the second housing 2200 Under the action of the folding mechanism 2300, the second housing 2200 can be close to or away from the first housing 2100.
  • the second housing 2200 is moved close to or away from the first housing 2100 by the folding mechanism 2300, thereby realizing the switching between the working state and the folding state of the virtual image display device 2000.
  • the working state the second housing 2200 is moved away from the first housing 2100, and the distance between the components in the display system 2400 is large, which satisfies the positional relationship of imaging, and the display system 2400 can realize the imaging of the imaging light to the human eye.
  • the second housing 2200 is moved close to the first housing 2100, thereby reducing the volume and thickness of the virtual image display device 2000, which can facilitate the integration of the virtual image display device 2000 with the surrounding environment, and can improve the portability of the virtual image display device 2000.
  • the transflective unit 2420 may be a semi-transmissive and semi-reflective unit, or a transflective unit with other ratios (e.g., 40% transmission and 60% reflection, or 55% transmission and 45% reflection, etc.), or a polarized transflective unit (e.g., transmission of S light and reflection of P light, or transmission of P light and reflection of S light, etc.), which is not limited in the present application.
  • the reflection unit 2430 may be a curved mirror.
  • the folding mechanism 2300 includes a rotating shaft 2310 and a power unit 2320 , wherein the rotating shaft 2310 is used to connect the first housing 2100 and the second housing 2200 , and the power unit 2320 is connected to the second housing 2200 .
  • the power unit 2320 is used to drive the second housing 2200 to move closer to or away from the first housing 2100 .
  • the rotating shaft 2310 can be the rotation center and the power unit 2320 can be the power source, so as to realize the movement of the second shell 2200 relative to the first shell 2100, thereby making the second shell 2200 move away from or close to the first shell 2100.
  • the folding mechanism 2300 further includes a first connecting rod 2330 , and the power unit 2320 is connected to the second housing 2200 via the first connecting rod 2330 .
  • the power provided or transmitted by the power unit 2320 is transmitted to the second shell 2200 through the first connecting rod 2330. If the direction of action of the power is made to fit the moving trajectory of the second shell 2200, the requirement for the power provided by the power unit 2320 can be reduced.
  • the virtual image display device 2000 further includes a connection unit 2340 , and the first connecting rod 2330 is connected to the second housing 2200 via the connection unit 2340 .
  • the virtual image display device 2000 further includes a first connection unit 2341 , and the first connecting rod 2330 and the second housing 2200 are fixedly connected via the first connection unit 2341 .
  • the direction of the first connecting rod 2330 is related to the moving direction of the second shell 2200 (for example, they are parallel to each other, have a certain angle between each other, or the extension direction is parallel to the tangent of a certain point on the moving trajectory of the second shell 2200, etc.), the first connecting rod 2330 and the second shell 2200 are fixedly connected, so that the power action direction of the power unit 2320 can be better aligned with the moving direction of the second shell 2200, thereby better saving effort for the power unit 2320.
  • the folding mechanism 2300 further includes a second connecting unit 2342 connecting the first connecting rod 2330 and the second housing 2200.
  • the second connecting unit 2342 is used to change the connection angle between the first connecting rod 2330 and the second housing 2200.
  • the first connecting rod 2330 and the second shell 2200 are connected by the second connecting unit 2342.
  • the first connecting rod 2330 can be made parallel to the surface of the second shell 2200 or the first connecting rod 2330 can be made close to the second shell 2200, thereby reducing the thickness and volume of the virtual image display device 2000 occupied by the first connecting rod 2330.
  • the folding mechanism 2300 further includes: a second connecting rod 2350 connecting the rotating shaft 2310 and the connecting unit 2340 .
  • the power unit 2320 includes a power source mechanism for moving the second housing 2200 .
  • the power source mechanism may be a motor, a gas-hydraulic transmission mechanism, etc.
  • the position of the second shell 2200 can be automatically controlled, thereby realizing intelligent operation of the virtual image display device 2000 (such as automatic opening, automatic folding, etc.).
  • the power unit 2320 includes a traction mechanism, and the user can move the second housing 2200 through the traction mechanism.
  • the user can independently determine the position of the second housing 2200 through the traction mechanism, so that the user can control the virtual image display device 2000 .
  • the virtual image display device 2000 further includes a flexible sealing unit 2500.
  • the flexible sealing unit 2500, the first housing 2100, and the second housing 2200 form a closed space, and the display system 2400 is in the closed space.
  • the flexible sealing unit 2500 when the second housing 2200 approaches or moves away from the first housing 2100, the flexible sealing unit 2500 can be flexibly deformed, thereby ensuring the airtightness of the above-mentioned enclosed space and ensuring that the display system in the enclosed space is 2400
  • Each component is dustproof and waterproof.
  • the virtual image display device 2000 further includes a rotating structure 2600 , and the rotating structure 2600 is used to drive the first housing 2100 to rotate.
  • the first housing 2100 is rotated by the rotating structure 2600, so that the virtual image display device 2000 can match different needs in different scenes.
  • the rotating structure 2600 can drive the image source 2410 to move to the target image source position corresponding to the human eye position by rotating the first housing 2600, so that the optical imaging system composed of the entire display system 2400 realizes the imaging of the imaging light to the human eye.
  • the rotating structure 2600 in the folded state, can rotate the first housing 2100, thereby driving the second housing 2200 to change its position, so that the outer wall of the second housing 2200 matches the surrounding environment surface.
  • the virtual image display device 2000 further includes a bracket 2700 .
  • the bracket 2700 is connected to the rotating structure 2600 , and the bracket 2700 is used to support the first housing 2100 .
  • the structure of the virtual image display device 2000 including the bracket 2700 can be used as a display device that is easy to carry.
  • an embodiment of the present application provides a vehicle, which includes a structural device and the virtual image display device 2000 described in the first aspect, wherein the virtual image display device 2000 is located in the accommodating space of the structural device.
  • the structural equipment includes at least one of the following: an instrument panel, a seat back, an inner wall of a vehicle, an operating table, and a processing table.
  • the operating table can be a rescue operating table on an ambulance, a kitchen operating table on an RV, etc.
  • the processing table can be a bar counter on an RV, a dining table in a cabin, an office desk, etc., and this application does not limit this.
  • the rotation axis 2310 of the virtual image display device 2000 is located inside the structural device.
  • the folding mechanism 2300 is used to move the second housing 2200 into or out of the accommodating space of the structural device.
  • the rotating structure 2600 is used to drive the first housing 2100 to rotate, thereby rotating the folded virtual image display device 2000 to the accommodating space of the structural device.
  • the rotating structure 2600 is used to drive the first housing 2100 to rotate so that the outer wall of the second housing 2200 matches the surrounding environment surface of the structural equipment.
  • the rotating structure 2600 is used to drive the first housing 2100 to rotate, so that the image source 2410 on the first housing 2100 moves to the target image source position corresponding to the human eye position.
  • the folding mechanism 2300 is used to move the second housing 2200 away from the first housing 2100, so that the transflective unit 2420 on the second housing 2200 moves to the transflective unit position corresponding to the target image source position.
  • the components in the display system 2400 are moved to positions corresponding to the positions of the human eyes, thereby realizing the imaging of the imaging light to the human eyes.
  • the vehicle further includes a sensor unit, which is used to detect the position of human eyes.
  • the position of human eyes can be used to determine the position of the target image source.
  • FIG1 is a schematic structural diagram of a reflective display device of the present application.
  • FIG2 is a schematic diagram of the structure of a virtual image display device 2000 provided in an embodiment of the present application.
  • FIG3 is a schematic diagram of a virtual image display device 2000 provided in an embodiment of the present application in different states;
  • FIG. 4 is a schematic structural diagram of a folding mechanism 2300 provided in an embodiment of the present application.
  • FIG5 is a schematic structural diagram of a power source mechanism 2321 provided in an embodiment of the present application.
  • FIG6 is a schematic structural diagram of a traction mechanism 2322 provided in an embodiment of the present application.
  • FIG7 is a schematic structural diagram of a virtual image display device 2000 including a first connecting rod 2330 provided in an embodiment of the present application;
  • FIG8 is a schematic structural diagram of a virtual image display device 2000 including a movable connection unit 2340 provided in an embodiment of the present application;
  • FIG9 is a schematic diagram of the thickness of a virtual image display device 2000 with a variable connection angle provided in an embodiment of the present application;
  • FIG10 is a schematic structural diagram of a virtual image display device 2000 including a second connecting rod 2350 provided in an embodiment of the present application;
  • FIG11 is a schematic structural diagram of a virtual image display device 2000 with a folding unit 2300 on a first housing 2100 provided in an embodiment of the present application;
  • FIG12 is a schematic structural diagram of a virtual image display device 2000 including a flexible sealing unit 2500 provided in an embodiment of the present application;
  • FIG13 is a schematic structural diagram of a virtual image display device 2000 including a rotating structure 2600 provided in an embodiment of the present application;
  • FIG. 14 is a schematic diagram of a virtual image display device 2000 provided in an embodiment of the present application in different states;
  • FIG. 15 is a schematic structural diagram of a virtual image display device 2000 including a bracket 2700 provided in an embodiment of the present application;
  • FIG16 is a schematic diagram of the structure of a vehicle provided in an embodiment of the present application.
  • FIG. 17 is a circuit diagram of a virtual image display device 2000 provided in an embodiment of the present application.
  • At least one refers to one or more, and “multiple” refers to two or more.
  • “And/or” describes the association relationship of associated objects, indicating that three relationships can exist, for example, A and/or B, can represent: A exists alone, A and B exist simultaneously, and B exists alone, wherein A, B can be singular or plural.
  • the character “/” generally represents that the associated objects before and after are a kind of "or” relationship.
  • “At least one of the following” or similar expressions refers to any combination of these items, including any combination of single or plural items.
  • At least one of a, b, or c can mean: a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, and c can be single or plural.
  • FIG1 is a schematic diagram of the structure of a reflective display device.
  • the reflective display device includes: an image source, a reflection unit, and a transflective unit.
  • the imaging light emitted by the image source is projected to the human eye through the light path of the transflective unit, the reflection unit, and the transflective unit to achieve imaging.
  • the imaging light has a certain optical path from the image source to each surface of the transflective unit and the reflection unit. Therefore, a certain distance needs to be spaced between the image source and the transflective unit and the reflection unit, which results in a larger volume of the reflective display device.
  • the volume of the display device is required to be relatively high.
  • the display device may be a head-up display (HUD), which may be installed on the dashboard or the back of a chair. Due to the large size of the HUD, a large space needs to be reserved on the dashboard or the back of a chair to install the HUD, which imposes great restrictions on the internal structure design of the dashboard or the back of a chair.
  • the HUD may be made to protrude from the surface of the dashboard or the back of a chair, but this approach will result in the occupation of space in the vehicle. For example, in a take-away scenario, if the display device is large in size, it will affect portability.
  • an embodiment of the present application provides a virtual image display device, which uses a folding mechanism to fold the device when not in operation, thereby reducing the thickness of the device, thereby facilitating the integration of the device with the surrounding environment, and improving the portability of the device and reducing the size of the device.
  • the virtual image display device 2000 provided in the embodiment of the present application includes: a first housing 2100, a second housing 2200, a folding mechanism 2300 and a display system 2400.
  • the display system 2400 includes an image source 2410, a transflective unit 2420 and a reflective unit 2430.
  • the image source 2410 and the reflective unit 2430 are connected to the inner wall of the first housing 2100, and the transflective unit 2420 is connected to the second housing 2200.
  • the folding mechanism 2300 is used to connect the first housing 2100 and the second housing 2200.
  • the folding mechanism 2300 is used to connect the first housing 2100 and the second housing 2200. Under the action of the folding mechanism 2300, the second housing 2200 is moved closer to or away from the first housing 2100.
  • the working state and the folding state of the virtual image display device 2000 can be defined.
  • the working state the second housing 2200 is moved away from the first housing 2100, and the positional relationship between the image source 2410, the transflective unit 2420 and the reflective unit 2430 in the display system 2400 satisfies the positional relationship for imaging, and the imaging light emitted by the image source 2410 is projected to the human eye through the transflective unit 2420 and the reflective unit 2430, thereby realizing the imaging of the imaging light to the human eye.
  • the first housing 2100 is moved close to the second housing 2200 to realize the folding of the virtual image display device, which can reduce the volume of the virtual image display device.
  • the first housing 2100 is moved close to the second housing 2200 , and the thickness of the entire virtual image display device 2000 is reduced from d1 in the working state to d2 in the folded state. Compared with the working state, the volume and thickness of the folded state are smaller.
  • the second housing 2200 is moved closer to or farther from the first housing 2100 by the folding mechanism 2300, thereby realizing the switching between the working state and the folded state of the virtual image display device 2000.
  • the display system 2400 can work normally to realize the imaging of the imaging light to the human eye, and in the folded state, the volume and thickness of the virtual image display device 2000 can be reduced.
  • the overall structure of the virtual image display device 2000 provided in the embodiment of the present application is described above. Next, the various components of the virtual image display device 2000 (such as the folding mechanism 2300, the display system 2400, etc.) will be described in detail.
  • the image source 2410 can be a thin film transistor (TFT), an organic light-emitting diode (OLED), a sub-millimeter light-emitting diode mini LED, a micron light-emitting diode micro LED, liquid crystal on silicon (LCOS), a digital micromirror device (DMD), a projector, etc.;
  • the transflective unit 2420 can be a flat transflective unit, a curved transflective unit, etc., which is not limited in the present application.
  • the image source 2410 and the reflection unit 2430 may be integrated on the inner wall of the first housing 2100 by means of screws, buckles, bonding, etc., which is not limited in the present application.
  • the reflection unit 2420 may be fixed by bonding, a structural frame, or the like.
  • the second housing may be integrated in the second housing in other ways, and this application does not limit this.
  • the transflective unit 2420 may be a semi-transmissive and semi-reflective unit, or a transflective unit with other ratios (e.g., 40% transmission and 60% reflection, or 55% transmission and 45% reflection, etc.), or a polarized transflective unit (e.g., transmission of S light and reflection of P light, or transmission of P light and reflection of S light, etc.), which is not limited in the present application.
  • the reflection unit 2430 may be a curved mirror.
  • the folding mechanism 2300 may include a rotating shaft 2310 and a power unit 2320.
  • the rotating shaft 2310 is used to connect the first housing 2100 and the second housing 2200, and the second housing 2200 can rotate around the rotating shaft 2310 to achieve a change in the positional relationship with the first housing 2100.
  • the power unit 2320 is connected to the second housing 2200 and is used to drive the second housing 2200 to move, so that the second housing 2200 is close to or away from the first housing 2100, so as to achieve the switching between the above-mentioned working state and the folding state.
  • the rotating shaft 2310 may have different forms.
  • the rotating shaft 2310 may be an axis on the first housing 2100, and the second housing 2200 may include a hole that cooperates with the rotating shaft 2310. After the hole cooperates with the rotating shaft 2310, the second housing 2200 can rotate around the rotating shaft 2310 to change the positional relationship between the second housing 2200 and the first housing 2100.
  • the rotating shaft 2310 may be an axis on the second housing 2200, and the first housing 2100 may include a hole that cooperates with the rotating shaft 2310.
  • the rotating shaft 2310 may be an axis independent of the first housing 2100 and the second housing 2200, and the first housing 2100 and the second housing 2200 may both be provided with holes that cooperate with the rotating shaft 2310, which is not limited in the present application.
  • the rotation axis 2310 may be at one end of the first housing 2100 and the second housing 2200 (i.e., at point A in FIG4 ), as shown in FIG4 .
  • the rotation axis 2310 may also be at other positions, such as point B or point C in FIG4 , as long as the rotation axis 2310 is on the same side of the components in the optical system 2400 (for example, as shown in FIG4 , the rotation axis 2310 is below the image source 2410, the transflective unit 2420, and the reflective unit 2430), and the present application does not limit this.
  • the power unit 2320 may have different forms, such as the power source mechanism 2321 shown in FIG. 5 , or the traction mechanism 2322 shown in FIG. 6 .
  • the power unit 2320 may be a power source mechanism 2321, which is used to provide power to move the second housing 2200.
  • the power source mechanism 2321 may be a motor, a gas-hydraulic transmission mechanism, etc., which is not limited in the present application.
  • the power source mechanism 2321 can realize the movement of the second housing 2200 relative to the first housing 2100.
  • the power source mechanism 2321 can be a motor on the first housing 2100, which transmits power to the second housing 2200 through a transmission mechanism to realize the movement of the second housing 2200 relative to the first housing 2100.
  • the power source mechanism 2321 can be a motor on the surrounding environment of the virtual image display device 2000 (such as the back of a car seat), which transmits power to the second housing 2200 through a transmission mechanism to realize the movement of the second housing 2200 relative to the first housing 2100.
  • the power source mechanism 2321 can realize the movement of the first housing 2100 relative to the second housing 2200.
  • the power source mechanism 2321 can be a motor on the second housing 2200, which transmits power to the first housing 2100 through a transmission mechanism to realize the movement of the first housing 2100 relative to the second housing 2200.
  • the power source mechanism 2321 can be a motor on the surrounding environment of the virtual image display device 2000 (such as the back of a car seat), which transmits power to the first housing 2100 through a transmission mechanism to realize the movement of the first housing 2100 relative to the second housing 2200.
  • the power source mechanism 2321 can also be a gas-hydraulic transmission mechanism, etc., which is not limited in the present application.
  • the transmission mechanism can achieve power transmission through belt drive, sprocket, gear rack, worm gear, screw, crank, cam, etc., which is not limited in this application.
  • the power unit 2320 may also be a traction mechanism 2322, through which the user can move the second Shell 2200.
  • the traction mechanism 2322 can be a protrusion (as shown in FIG6a), a groove (as shown in FIG6b), etc. on the second shell 2200, and the present application does not limit this.
  • the second housing 2200 can be moved so that the second housing 2200 is close to or away from the first housing.
  • the folding mechanism 2300 may also include a first connecting rod 2330, and the extension direction of the first connecting rod 2330 is related to the direction in which the second housing 2200 is close to or away from the first housing 2100 (for example, they are parallel to each other, have a certain angle between each other, or the extension direction is parallel to the tangent of a certain point of the moving track of the second housing 2200, etc.).
  • the power unit 2320 is connected to the second housing 2200 through the first connecting rod 2330.
  • the power provided or transmitted by the power unit 2320 is transmitted to the second housing 2200 through the first connecting rod 2330, so that the direction of action of the power on the second housing 2200 is aligned with the moving track of the second housing 2200, thereby reducing the requirements for the power size provided by the power unit 2320.
  • the first connecting rod 2330 can reduce the requirement for the motor power and reduce the friction generated by the movement of the motor, thereby extending the service life of the motor and even the entire virtual image display device 2000. If the power unit 2320 is a traction mechanism, the first connecting rod 2330 can save effort for the user. Due to the presence of the first connecting rod 2330, the user can apply a small force to drive the second housing 2200 to move.
  • connection between the first connecting rod 2330 and the second housing 2200 can be realized by the connecting unit 2340.
  • the embodiment of the present application does not limit the connection method between the first connecting rod 2330 and the second housing 2200.
  • the connecting unit 2340 may include a first connecting unit 2341 and a second connecting unit 2342.
  • the first connecting unit 2341 is used to realize the fixed connection between the first connecting rod 2330 and the second housing 2200. That is, in the process of driving the second housing 2200 to approach or move away from the first housing 2100 through the power unit 2320 and the first connecting rod 2330, the connection angle between the first connecting rod 2330 and the second housing 2200 remains unchanged due to the fixed connection of the first connecting unit 2341.
  • the connection structure is simple and easy to realize.
  • the fixed connection between the first connecting rod 2330 and the second shell 2200 can better match the power action direction of the power unit 2320 with the moving direction of the second shell 2200, thereby saving effort for the power unit 2320.
  • the connecting unit 2340 connecting the first connecting rod 2330 and the second housing 2200 may also be movable, and the second connecting unit 2342 is used to change the connection angle between the first connecting rod 2330 and the second housing 2200.
  • the second connecting unit 2342 may be a shaft protruding from the second housing 2200, and the first connecting rod 2330 is provided with a hole that matches the shaft. In the process of the second housing 2200 approaching or moving away from the first housing 2100, the connection angle between the first connecting rod 2330 and the second housing 2200 may change.
  • the length of the first connecting rod 2330 can be determined according to mechanical design, etc. As shown in Figure a of Figure 9, if the length of the first connecting rod 2330 is determined to be smaller, the first connecting rod 2330 can be fixedly connected to the second housing 2200 (i.e., fixedly connected as shown in Figure 7), and the thickness of the virtual image display device 2000 is changed from d1 to d2 by folding.
  • connection angle between the first connecting rod 2330 and the second housing 2200 can be made variable (i.e., a movable connection as shown in FIG. 8 ), and the connection angle between the first connecting rod 2330 and the second housing can also be changed during the folding process, so that the first connecting rod 2330 is folded toward the second housing 2200. Folding and changing the connection angle change the thickness of the virtual image display device 2000 from d1 to d2.
  • the folding mechanism 2300 may further include a second connecting rod 2350, which is used to The rotating shaft is connected to the first connecting rod.
  • the folding mechanism 2300 may be placed on the first housing 2100 so that the first housing 2100 is close to or away from the second housing 2200, and this application does not limit this. If the folding mechanism 2300 is placed on the first housing 2100, the power unit 2320, the first connecting rod 2330, the second connecting rod 2350, etc. will also be connected to the first housing 2100. The connection relationship is shown in the description of FIGS. 2 to 10 above, and will not be repeated here.
  • the virtual image display device 2000 may further include a flexible sealing unit 2500.
  • the flexible sealing unit 2500 is used to protect various components in the display system 2400. Specifically, the flexible sealing unit 2500 forms a closed space with the first housing 2100 and the second housing 2200, and the display system 2400 is within the closed space. In the process of the second housing 2200 approaching or moving away from the first housing 2100, the flexible sealing unit 2500 may be flexibly deformed, thereby ensuring the airtightness of the above-mentioned closed space and ensuring that the components of the display system 2400 in the closed space are dustproof and waterproof.
  • the virtual image display device 2000 may further include a rotating structure 2600 for driving the first housing 2100 to rotate so as to match the virtual image display device 2000 with a corresponding position relationship in different states (eg, a working state or a folded state).
  • a rotating structure 2600 for driving the first housing 2100 to rotate so as to match the virtual image display device 2000 with a corresponding position relationship in different states (eg, a working state or a folded state).
  • the rotating structure 2600 in the working state, can rotate the first shell 2100, thereby driving the image source 2410 to change its position, so that the image source 2410 moves to the target image source position corresponding to the position of the human eye, so that the optical imaging system composed of the entire display system 2400 realizes imaging of the imaging light to the human eye.
  • the second housing 2200 is brought close to the first housing 2100, and the virtual image display device 2000 enters a folded state. At this time, the outer wall of the second housing 2200 does not match the surrounding environment surface. Therefore, as shown in FIG. 14 c, the first housing 2100 is rotated by the rotating structure 2600, thereby driving the second housing 2200 to change its position, so that the outer wall of the second housing 2200 matches the surrounding environment surface.
  • the surrounding environment surface here can be an extension of the surrounding environment surface as shown in Figure c of Figure 14.
  • the surrounding environment surface can be an extension of the seat back surface.
  • the surrounding environment surface can also be an extension of other surfaces, such as an extension of the instrument panel surface, the center console surface, etc., and this application does not limit this.
  • the surrounding environment surface may also be a preset installation surface, etc., which is not limited in this application.
  • the virtual image display device 2000 is a lifting HUD on a vehicle, which is stored in a preset installation surface when not in use, and the HUD is raised to a height visible to the human eye when in use, then the surrounding environment surface may be a preset installation surface.
  • the virtual image display device 2000 when the virtual image display device 2000 switches from the working state to the folded state, it can be folded first and then rotated as shown in FIG. 14, or it can be rotated first and then folded, or it can be rotated and folded at the same time, which is not limited in this application. Accordingly, when the virtual image display device 2000 switches from the folded state to the working state, the sequence between unfolding and rotating is not limited.
  • the rotating structure 2600 may be a rotating shaft, which may be driven to rotate by a transmission mechanism, thereby driving the first housing 2100.
  • the transmission mechanism may be a gear, a worm gear, a flexible shaft, etc., which is not limited in the present application.
  • the virtual image display device 2000 may further include a bracket 2700, which is connected to the rotating structure 2600 and is used to support the first housing 2100.
  • the structure of the virtual image display device 2000 shown in FIG. 15 may be used as a square Portable display device.
  • the virtual image display device 2000 can be used in a vehicle in addition to being a portable display device.
  • the embodiment of the present application further provides a vehicle, which includes a dashboard and the virtual image display device 2000, and the virtual image display device 2000 is located in the accommodation space of the dashboard.
  • the rotation axis 2310 of the virtual image display device 2000 may be located inside the instrument panel.
  • the folding mechanism 2300 can move the second housing 2200 into or out of the accommodating space of the structural device to achieve switching of the virtual image display device 2000 between the folded state and the working state.
  • the rotating structure 2600 in the virtual image display device 2000 can drive the first housing 2100 to rotate, so that the image source 2410 on the first housing 2100 moves to the target image source position corresponding to the human eye position.
  • the folding mechanism 2300 can move the second housing 2200 away from the first housing 2100, so that the transflective unit 2420 on the second housing 2200 moves to the transflective unit position corresponding to the target image source position.
  • the vehicle may further include a sensor unit for detecting the position of human eyes.
  • the position of human eyes may be used to determine the position of the target image source.
  • the processor of the virtual image display device 2000 e.g., the main processor 1101 in FIG. 17
  • the processor of the virtual image display device 2000 may adjust the rotation angle of the rotating structure 2600 according to the position of human eyes. That is, the virtual image display device 2000 may automatically adjust the pitch angle according to the actual position of human eyes.
  • the rotating structure 2600 in the virtual image display device 2000 can drive the first housing 2100 to rotate, thereby rotating the folded virtual image display device 2000 into the accommodation space in the instrument panel. Further, the rotating structure 2600 can drive the first housing 2100 to rotate, so that the outer wall of the second housing 2200 matches the surrounding environment surface of the instrument panel.
  • the virtual image display device 2000 provided in the embodiment of the present application can also be installed on other structural equipment of a vehicle, such as a seat back, an inner wall of a vehicle, an operating table, a processing table, etc., and the present application does not limit this.
  • the rotating structure 2600 can drive the first shell 2100 to rotate so that the outer wall of the second shell 2200 cooperates with the surface of the seat back/inner wall of a vehicle/operating table/processing table.
  • the operating table can be a rescue operating table on an ambulance, a kitchen operating table on an RV, etc.; the processing table can be a bar counter on an RV, a dining table in a cabin, an office desk, etc., and this application does not limit this.
  • the means of transportation provided in the embodiments of the present application may be a motor vehicle, a train, an airplane, etc., and the present application does not limit this.
  • FIG. 17 is a circuit diagram of a virtual image display device 2000 provided in an embodiment of the present application.
  • the circuit in the virtual image display device 2000 mainly includes a host CPU 1101, an external memory interface 1102, an internal memory 1103, an audio module 1104, a video module 1105, a power module 1106, a wireless communication module 1107, an I/O interface 1108, a video interface 1109, a display circuit 1110, and a modulator 1111.
  • the host CPU 1101 and its peripheral components such as the external memory interface 1102, the internal memory 1103, the audio module 1104, the video module 1105, the power module 1106, the wireless communication module 1107, the I/O interface 1108, the video interface 1109, and the display circuit 1110 can be connected through a bus.
  • the host CPU 1101 can be called a front-end processor.
  • the circuit diagram shown in the embodiment of the present application does not constitute a specific limitation on the virtual image display device 2000.
  • the virtual image display device 2000 may include more or fewer components than shown, or combine some components, or separate some components, or arrange the components differently.
  • the components shown may be implemented in hardware, software, or a combination of software and hardware.
  • the main processor 1101 includes one or more processing units, for example, the main processor 1101 may include an application processor (application processor, AP), a modem processor, a graphics processor (graphics processing unit, GPU), an image signal processor (image signal processor, ISP), a controller, a video codec, a digital signal processor (digital signal processor, DSP), a baseband processor, and/or a neural-network processing unit (neural-network processing unit, NPU), etc.
  • Different processing units may be independent devices or integrated in one or more processors.
  • the main processor 1101 may also be provided with a memory for storing instructions and data.
  • the memory in the main processor 1101 is a cache memory.
  • the memory may store instructions or data that the main processor 1101 has just used or cyclically used. If the main processor 1101 needs to use the instruction or data again, it may be directly called from the memory. This avoids repeated access, reduces the waiting time of the main processor 1101, and thus improves the efficiency of the system.
  • the virtual image display device 2000 may further include a plurality of input/output (I/O) interfaces 1108 connected to the main processor 1101.
  • the I/O interface 1108 may include an inter-integrated circuit (I2C) interface, an inter-integrated circuit sound (I2S) interface, a pulse code modulation (PCM) interface, a universal asynchronous receiver/transmitter (UART) interface, a mobile industry processor interface (MIPI), a general-purpose input/output (GPIO) interface, a subscriber identity module (SIM) interface, and/or a universal serial bus (USB) interface, etc.
  • the I/O interface 1108 may be connected to devices such as a mouse, touchpad, keyboard, camera, speaker, microphone, etc., and may also be connected to physical buttons on the virtual image display device 2000 (such as volume buttons, brightness adjustment buttons, power buttons, etc.).
  • the external memory interface 1102 can be used to connect an external memory card, such as a Micro SD card, to expand the storage capacity of the virtual image display device 2000.
  • the external memory card communicates with the main processor 1101 through the external memory interface 1102 to implement a data storage function.
  • the internal memory 1103 can be used to store computer executable program codes, and the executable program codes include instructions.
  • the internal memory 1103 can include a program storage area and a data storage area.
  • the program storage area can store an operating system, an application required for at least one function (such as a call function, a time setting function, etc.), etc.
  • the data storage area can store data created during the use of the virtual image display device 2000 (such as a phone book, world time, etc.), etc.
  • the internal memory 1103 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, a universal flash storage (universal flash storage, UFS), etc.
  • the main processor 1101 executes various functional applications and data processing of the virtual image display device 2000 by running instructions stored in the internal memory 1103 and/or instructions stored in a memory provided in the main processor 1101.
  • the virtual image display device 2000 can implement audio functions such as music playing and making calls through the audio module 1104 and the application processor.
  • the audio module 1104 is used to convert digital audio information into analog audio signal output, and is also used to convert analog audio input into digital audio signals.
  • the audio module 1104 can also be used to encode and decode audio signals, such as playing or recording.
  • the audio module 1104 can be set in the main processor 1101, or part of the functions of the audio module 1104 can be The power module is set in the main processor 1101.
  • the video interface 1109 can receive external audio and video signals, which can be specifically a high definition multimedia interface (HDMI), a digital visual interface (DVI), a video graphics array (VGA), a display port (DP), etc.
  • the video interface 1109 can also output video to the outside.
  • the video interface 1109 can receive speed signals and power signals input from peripheral devices, and can also receive external AR video signals.
  • the video interface 1109 can receive video signals input from an external computer or terminal device.
  • the video module 1105 can decode the video input by the video interface 1109, for example, by performing H.264 decoding.
  • the video module can also encode the video collected by the virtual image display device 2000, for example, by performing H.264 encoding on the video collected by the external camera.
  • the main processor 1101 can also decode the video input by the video interface 1109, and then output the decoded image signal to the display circuit 1110.
  • the display circuit 1110 and the modulator 1111 are used to display the corresponding image.
  • the video interface 1109 receives an external video source signal, and the video module 1105 decodes and/or digitally processes the video signal and outputs one or more image signals to the display circuit 1110.
  • the display circuit 1110 drives the modulator 1111 to image the incident polarized light according to the input image signal, and then outputs the image light.
  • the main processor 1101 can also output the image signal to the display circuit 1110.
  • the power module 1106 is used to provide power to the main processor 1101 and the light source 110 according to the input power (e.g., direct current), and the power module 1106 may include a rechargeable battery, which can provide power to the main processor 1101 and the light source 110.
  • the light emitted by the light source 110 can be transmitted to the modulator 1111 for imaging, thereby forming an image light signal.
  • the wireless communication module 1107 enables the virtual image display device 2000 to communicate wirelessly with the outside world, and can provide wireless local area networks (WLAN) (such as wireless fidelity (Wi-Fi) network), Bluetooth (BT), global navigation satellite system (GNSS), frequency modulation (FM), near field communication (NFC), infrared technology (IR) and other wireless communication solutions.
  • WLAN wireless local area networks
  • BT Bluetooth
  • GNSS global navigation satellite system
  • FM frequency modulation
  • NFC near field communication
  • IR infrared technology
  • the wireless communication module 1107 can be one or more devices integrating at least one communication processing module.
  • the wireless communication module 1107 receives electromagnetic waves via an antenna, modulates and filters the electromagnetic wave signals, and sends the processed signals to the main processor 1101.
  • the wireless communication module 1107 can also receive the signal to be sent from the main processor 1101, modulate the frequency, amplify it, and convert it into electromagnetic waves for radiation through the antenna.
  • the video data decoded by the video module 1105 can also be received wirelessly through the wireless communication module 1107 or read from an external memory.
  • the virtual image display device 2000 can receive video data from a terminal device or an in-vehicle entertainment system through the wireless local area network in the vehicle, and the virtual image display device 2000 can also read audio and video data stored in an external memory.
  • the disclosed systems, devices and methods can be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the units is only a logical function division. There may be other division methods in actual implementation.
  • multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units.
  • the connection can be electrical, mechanical or other.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.
  • the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium.
  • the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application.
  • the aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk and other media that can store program code.

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Abstract

本申请实施例公开了一种虚像显示设备和交通工具，用于减小显示设备的体积以及使显示设备的外壳与周边环境配合。本申请实施例提供的虚像显示设备包括第一外壳(2100)、第二外壳(2200)、连接第一外壳(2100)和第二外壳(2200)的折叠机构(2300)、和显示系统(2400)。显示系统(2400)包括图像源(2410)、透反单元(2420)和反射单元(2430)，图像源(2410)和反射单元(2430)与第一外壳(2100)的内壁连接，透反单元(2420)与第二外壳(2200)连接。第二外壳(2200)在折叠机构(2300)的作用下，靠近或远离第一外壳(2100)。

Description

一种虚像显示设备和交通工具
本申请要求于2022年10月27日提交中国国家知识产权局、申请号为202211329435.1、申请名称为“一种虚像显示设备和交通工具”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请实施例涉及显示领域，尤其涉及一种虚像显示设备和交通工具。
背景技术
随着光显示技术的发展，显示设备逐渐应用在各种场景中。在车载、外带等场景中，要求显示设备的体积尽量小。
在抬头显示(head up display，HUD)等反射式显示设备中，由于光路是固定的，导致显示设备的整体体积较大，无法适配于上述车载、外带等对显示设备体积要求较高的场景中。
发明内容
本申请实施例提供了一种虚像显示设备和交通工具，用于减小显示设备的体积与厚度，从而方便设备与周围环境融合，以及提升设备的便携性。
第一方面，本申请实施例提供了一种虚像显示设备2000。该虚像显示设备2000包括第一外壳2100、第二外壳2200、折叠机构2300和显示系统2400。其中，折叠机构2300用于连接第一外壳2100和第二外壳2200。显示系统2400包括图像源2410、透反单元2420和反射单元2430。其中，图像源2410和反射单元2430与第一外壳2100的内壁连接，透反单元2420与第二外壳2200连接。第二外壳2200在折叠机构2300的作用下，可以靠近或远离第一外壳2100。
在本申请实施例中，通过折叠机构2300的作用，使第二外壳2200靠近或远离第一外壳2100，从而实现虚像显示设备2000在工作状态与折叠状态之间的切换。在工作状态下，使第二外壳2200远离第一外壳2100，显示系统2400内各部件之间的距离较大，满足成像的位置关系，显示系统2400可以实现成像光到人眼的成像。在折叠状态下，使第二外壳2200靠近第一外壳2100，从而减小虚像显示设备2000的体积与厚度，可以方便虚像显示设备2000与周边环境融合，以及可以提升虚像显示设备2000的便携性。
可选的，透反单元2420可以是半透半反单元，或者其他比例的透反单元(例如透射40％、反射60％，或者透射55％、反射45％等)，也可以是偏振透反单元(例如透射S光、反射P光，或者透射P光、反射S光等)，本申请对此不做限定。可选的，反射单元2430可以是曲面镜。
在一种可选的实现方式中，折叠机构2300包括旋转轴2310和动力单元2320。其中，旋转轴2310用于连接第一外壳2100和第二外壳2200，动力单元2320与第二外壳2200连接。 动力单元2320用于带动第二外壳2200靠近或远离第一外壳2100。
在本申请实施例中，通过旋转轴2310与动力单元2320的配合，旋转轴2310可以为旋转中心，动力单元2320可以为动力源，实现第二外壳2200相对于第一外壳2100的移动，从而使第二外壳2200远离或靠近第一外壳2100。
在一种可选的实现方式中，折叠机构2300还包括第一连杆2330，动力单元2320通过第一连杆2330连接到第二外壳2200。
在本申请实施例中，动力单元2320所提供或传导的动力，通过第一连杆2330传导至第二外壳2200，若使动力的作用方向与第二外壳2200的移动轨迹贴合，就可以减小对动力单元2320提供的动力大小的要求。
在一种可选的实现方式中，虚像显示设备2000还包括连接单元2340，第一连杆2330与第二外壳2200通过连接单元2340连接。
在一种可选的实现方式中，虚像显示设备2000还包括第一连接单元2341，第一连杆2330与第二外壳2200通过第一连接单元2341实现固定连接。
在本申请实施例中，由于第一连杆2330的方向与第二外壳2200的移动方向相关(例如相互平行、相互之间有一定夹角，或者延伸方向与第二外壳2200移动轨迹某点的切线平行等)，因此使第一连杆2330与第二外壳2200之间固定连接，可以更好地使动力单元2320的动力作用方向与第二外壳2200的移动方向贴合，更好地为动力单元2320省力。
在一种可选的实现方式中，折叠机构2300还包括连接第一连杆2330与第二外壳2200的第二连接单元2342。该第二连接单元2342用于改变第一连杆2330与第二外壳2200之间的连接角度。
在本申请实施例中，通过第二连接单元2342连接第一连杆2330与第二外壳2200，在第一外壳2100与第二外壳2200之间距离较近的情况下(例如折叠状态)，可以使第一连杆2330与第二外壳2200的表面平行或使第一连杆2330靠近第二外壳2200，从而减小第一连杆2330所占用的虚像显示设备2000的厚度与体积。
在一种可选的实现方式中，折叠机构2300还包括：连接旋转轴2310与连接单元2340的第二连杆2350。
在一种可选的实现方式中，动力单元2320包括动力源机构，动力源机构用于移动第二外壳2200。
在本申请实施例中，动力源机构可以是电机、气液压传动机构等，通过动力源机构，可以实现对第二外壳2200位置的自动控制，从而实现对虚像显示设备2000的智能化操作(例如自动开启、自动折叠等)。
在一种可选的实现方式中，动力单元2320包括牵引机构，用户可以通过牵引机构移动第二外壳2200。
在本申请实施例中，用户可以通过牵引机构，自主决定第二外壳2200所在的位置，便于用户实现对虚像显示设备2000的控制。
在一种可选的实现方式中，虚像显示设备2000还包括柔性密封单元2500。柔性密封单元2500与第一外壳2100、第二外壳2200形成密闭空间，显示系统2400在该密闭空间内。
在本申请实施例中，在第二外壳2200靠近或远离第一外壳2100的过程中，柔性密封单元2500可以发生柔性形变，从而确保上述密闭空间的密闭性，保证密闭空间中的显示系统 2400各部件的防尘防水。
在一种可选的实现方式中，虚像显示设备2000还包括旋转结构2600，旋转结构2600用于驱动第一外壳2100旋转。
在本申请实施例中，通过旋转结构2600实现对第一外壳2100的旋转，从而使得虚像显示设备2000可以匹配不同场景下的不同需求。例如，在工作状态下，旋转结构2600可以通过旋转第一外壳2600，带动图像源2410动至人眼位置对应的目标像源位置，使得整个显示系统2400构成的光学成像系统实现成像光到人眼的成像。例如，在折叠状态下，旋转结构2600可以旋转第一外壳2100，从而带动第二外壳2200改变位置，使得第二外壳2200的外壁与周边环境面配合。
在一种可选的实现方式中，虚像显示设备2000还包括支架2700。支架2700与旋转结构2600连接，支架2700用于支撑第一外壳2100。
在本申请实施例中，包括支架2700的虚像显示设备2000结构，可以作为方便携带的显示设备。
第二方面，本申请实施例提供了一种交通工具。该交通工具包括结构设备以及第一方面所述的虚像显示设备2000。其中，虚像显示设备2000位于结构设备的容纳空间中。
在一种可选的实现方式中，结构设备包括下述至少一项：仪表盘台、椅背、交通工具内壁、操作台和处理台。
示例地，操作台可以是救护车上的抢救操作台、房车上的厨房操作台等；处理台可以是房车上的吧台、客舱中的餐桌、办工桌等，本申请对此不做限定。
在一种可选的实现方式中，虚像显示设备2000的旋转轴2310位于结构设备的内部。
在一种可选的实现方式中，折叠机构2300用于使第二外壳2200移入或移出结构设备的容纳空间。
在一种可选的实现方式中，旋转结构2600用于驱动第一外壳2100旋转，从而将折叠后的虚像显示设备2000旋转至结构设备的容纳空间。
在一种可选的实现方式中，旋转结构2600用于驱动第一外壳2100旋转，使第二外壳2200的外壁与结构设备的周边环境面配合。
在一种可选的实现方式中，旋转结构2600用于驱动第一外壳2100旋转，使第一外壳2100上的图像源2410移动至人眼位置对应的目标像源位置。折叠机构2300用于使第二外壳2200远离第一外壳2100，使第二外壳2200上的透反单元2420移动至目标像源位置对应的透反单元位置。
在本申请实施例中，通过旋转结构2600和折叠机构2300的作用，使显示系统2400中的各部件移动至人眼位置对应的各位置，从而实现成像光到人眼的成像。
在一种可选的实现方式中，交通工具还包括传感单元，该传感单元用于检测人眼位置。可选的，人眼位置可以用于确定上述目标像源位置。
附图说明
图1为本申请的反射式显示设备的结构示意图；
图2为本申请实施例提供的虚像显示设备2000的结构示意图；
图3为本申请实施例提供的虚像显示设备2000在不同状态下的示意图；
图4为本申请实施例提供的折叠机构2300的结构示意图；
图5为本申请实施例提供的动力源机构2321的结构示意图；
图6为本申请实施例提供的牵引机构2322的结构示意图；
图7为本申请实施例提供的包括第一连杆2330的虚像显示设备2000的结构示意图；
图8为本申请实施例提供的包括可活动的连接单元2340的虚像显示设备2000的结构示意图；
图9为本申请实施例提供的连接角度可变的虚像显示设备2000的厚度示意图；
图10为本申请实施例提供的包括第二连杆2350的虚像显示设备2000的结构示意图；
图11为本申请实施例提供的折叠单元2300在第一外壳2100上的虚像显示设备2000的结构示意图；
图12为本申请实施例提供的包括柔性密封单元2500的虚像显示设备2000的结构示意图；
图13为本申请实施例提供的包括旋转结构2600的虚像显示设备2000的结构示意图；
图14为本申请实施例提供的虚像显示设备2000在不同状态下的示意图；
图15为本申请实施例提供的包括支架2700的虚像显示设备2000的结构示意图；
图16为本申请实施例提供的交通工具的结构示意图；
图17为本申请实施例提供的虚像显示设备2000的电路示意图。
具体实施方式
下面结合附图，对本申请的实施例进行描述。本领域普通技术人员可知，随着技术的发展和新场景的出现，本申请实施例提供的技术方案对于类似的技术问题，同样适用。
本申请的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的术语在适当情况下可以互换，这仅仅是描述本申请的实施例中对相同属性的对象在描述时所采用的区分方式。此外，术语“包括”和“具有”以及他们的任何变形，其目的在于覆盖不排他的包含，以便包含一系列单元的过程、方法、系统、产品或设备不必限于那些单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它单元。另外，“至少一个”是指一个或者多个，“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B的情况，其中A，B可以是单数或者复数。字符“/”一般表示前后关联对象是一种“或”的关系。“以下至少一项(个)”或其类似表达，是指的这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a，b，或c中的至少一项(个)，可以表示：a，b，c，a-b，a-c，b-c，或a-b-c，其中a，b，c可以是单个，也可以是多个。
图1为反射式显示设备的结构示意图，如图1所示，反射式显示设备包括：图像源、反射单元和透反单元。其中，图像源发出的成像光经透反单元、反射单元、透反单元的光路，投射至人眼，实现成像。对于显示设备的光学系统来说，成像光从图像源到透反单元、反射单元中的各个面，具有一定的光程。因此在图像源与透反单元、反射单元之间，需要间隔一定的距离，这就导致反射式显示设备的体积较大。
在车载、外带等场景中，对显示设备的体积要求较高。例如，在车载场景中，显示设备可以是抬头显示设备(head up display，HUD)，HUD可以安装在仪表盘台或椅背上。由于HUD的体积较大，在仪表盘台或椅背上需要预留较大的空间来安装HUD，对仪表盘台或椅背的内部结构设计带来较大限制。或者，也可以使HUD从仪表盘台或椅背的表面突出，但是这种方式会导致对车内空间的占用。例如，在外带场景中，若显示设备的体积较大，将会影响便携性。
为了解决反射式显示设备体积较大的问题，本申请实施例提供了一种虚像显示设备，该虚像显示设备通过折叠机构，在非工作状态下将设备折叠起来，减小设备厚度，从而方便设备与周围环境融合，以及提升设备的便携性和减小设备的体积。
如图2所示，本申请实施例提供的虚像显示设备2000包括：第一外壳2100、第二外壳2200、折叠机构2300和显示系统2400。其中，显示系统2400包括图像源2410、透反单元2420和反射单元2430。图像源2410和反射单元2430与第一外壳2100的内壁连接，透反单元2420与第二外壳2200连接。折叠机构2300用于连接第一外壳2100和第二外壳2200。折叠机构2300用于连接第一外壳2100和第二外壳2200，第二外壳2200在折叠机构2300的作用下，靠近或远离第一外壳2100。
在本申请实施例中，可以定义虚像显示设备2000的工作状态与折叠状态。如图3所示，在工作状态下，使第二外壳2200远离第一外壳2100，显示系统2400中的图像源2410、透反单元2420和反射单元2430之间的位置关系满足成像的位置关系，图像源2410发出的成像光经透反单元2420和反射单元2430投射至人眼，从而实现成像光到人眼的成像。在折叠状态下，使第一外壳2100靠近第二外壳2200，实现对虚像显示设备的折叠，可以减小虚像显示设备的体积。
例如图3所示，通过折叠机构2300的作用，使第一外壳2100靠近第二外壳2200，将整个虚像显示设备2000的厚度由工作状态的d1减小为折叠状态的d2，相比于工作状态，折叠状态的体积与厚度更小。
在本申请实施例中，通过折叠机构2300的作用，使第二外壳2200靠近或远离第一外壳2100，从而实现虚像显示设备2000在工作状态与折叠状态之间的切换。在工作状态下显示系统2400可以正常工作，实现成像光到人眼的成像，在折叠状态下，可以减小虚像显示设备2000的体积与厚度。
上面说明了本申请实施例提供的虚像显示设备2000的整体结构，接下来将对虚像显示设备2000的各部件(例如折叠机构2300、显示系统2400等)展开说明。
关于显示系统2400，图像源2410可以是薄膜晶体管(thin film transistor，TFT)、有机发光二极管(organic light-emitting diode，OLED)、次毫米发光二极管mini LED、微米发光二极管micro LED、硅基液晶(liquid crystal on silicon，LCOS)、数字微透镜(digital micromirror device，DMD)、投影仪等；透反单元2420可以是平面透反单元、弧面透反单元等，本申请对此不做限定。
可选的，图像源2410、反射单元2430可以通过螺丝、卡扣、粘接等方式集成在第一外壳2100内壁上，本申请对此不做限定。可选的，透反单元2420可以通过粘接、结构框固定 等方式集成在第二外壳上，本申请对此不做限定。
可选的，透反单元2420可以是半透半反单元，或者其他比例的透反单元(例如透射40％、反射60％，或者透射55％、反射45％等)，也可以是偏振透反单元(例如透射S光、反射P光，或者透射P光、反射S光等)，本申请对此不做限定。可选的，反射单元2430可以是曲面镜。
关于折叠机构2300，在一种示例中，折叠机构2300可以包括旋转轴2310和动力单元2320。如图4所示，旋转轴2310用于连接第一外壳2100和第二外壳2200，第二外壳2200可以绕旋转轴2310旋转，实现与第一外壳2100之间位置关系的变化。动力单元2320与第二外壳2200连接，用于带动第二外壳2200移动，使第二外壳2200靠近或远离第一外壳2100，以实现上述工作状态与折叠状态之间的切换。
在折叠机构2300中，旋转轴2310可以具有不同的形态。例如，旋转轴2310可以是第一外壳2100上的轴，第二外壳2200可以包括与旋转轴2310配合的孔，该孔与旋转轴2310配合后，使得第二外壳2200可以绕旋转轴2310旋转，改变与第一外壳2100之间的位置关系。
可选的，也可以旋转轴2310是第二外壳2200上的轴，第一外壳2100包括与旋转轴2310配合的孔。或者，也可以旋转轴2310是独立于第一外壳2100和第二外壳2200的轴，第一外壳2100和第二外壳2200上均开设有与旋转轴2310配合的孔，本申请对此不做限定。
可选的，旋转轴2310可以如图4所示，在第一外壳2100和第二外壳2200的一端(即图4中的A点位置上)。除此之外，旋转轴2310也可以在其他位置上，例如图4中的B点、C点位置上，只要旋转轴2310在光学系统2400中各部件的同一侧即可(例如图4所示，旋转轴2310在图像源2410、透反单元2420和反射单元2430的下方)，本申请对此不做限定。
在折叠机构2300中，动力单元2320可以具有不同的形态。例如可以是图5所示的动力源机构2321，或者图6所示的牵引机构2322。
示例地，动力单元2320可以是动力源机构2321，动力源机构2321用于提供动力，以实现对第二外壳2200的移动。可选的，动力源机构2321可以是电机、气液压传动机构等，本申请对此不做限定。
可选的，动力源机构2321可以实现第二外壳2200相对于第一外壳2100的移动。例如，动力源机构2321可以是第一外壳2100上的电机，通过传动机构将动力传递至第二外壳2200，实现第二外壳2200相对于第一外壳2100的移动。或者，动力源机构2321可以是虚像显示设备2000的周边环境(例如车的椅背)上的电机，通过传动机构将动力传递至第二外壳2200，实现第二外壳2200相对于第一外壳2100的移动。
可选的，动力源机构2321可以实现第一外壳2100相对于第二外壳2200的移动。例如图5所示，动力源机构2321可以是第二外壳2200上的电机，通过传动机构将动力传递至第一外壳2100，实现第一外壳2100相对于第二外壳2200的移动。或者，动力源机构2321可以是虚像显示设备2000的周边环境(例如车的椅背)上的电机，通过传动机构将动力传递至第一外壳2100，实现第一外壳2100相对于第二外壳2200的移动。
可选的，除了电机，动力源机构2321还可以是气液压传动机构等，本申请对此不做限定。
可选的，传动机构可以通过带传动、链轮、齿轮齿条、蜗轮蜗杆、丝杠、曲柄、凸轮等方式实现动力的传递，本申请对此不做限定。
示例地，动力单元2320也可以是牵引机构2322，用户可以通过牵引机构2322移动第二 外壳2200。可选的，如图6所示，牵引机构2322可以是第二外壳2200上的凸起(图6中a图所示)、凹槽(图6中b图所示)等，本申请对此不做限定。
基于上述包括旋转轴2310和动力单元2320的折叠机构2300，可以实现对第二外壳2200的移动，使第二外壳2200靠近或远离第一外壳。可选的，如图7所示，折叠机构2300还可以包括第一连杆2330，第一连杆2330的延伸方向与第二外壳2200靠近或远离第一外壳2100的方向相关(例如相互平行、相互之间有一定夹角，或者延伸方向与第二外壳2200移动轨迹某点的切线平行等)。动力单元2320通过第一连杆2330连接到第二外壳2200上。在本申请实施例中，动力单元2320所提供或传导的动力，通过第一连杆2330传导至第二外壳2200，可以使动力在第二外壳2200上的作用方向与第二外壳2200的移动轨迹贴合，从而减小对动力单元2320提供的动力大小的要求。
例如，若动力单元2320是电机，则第一连杆2330可以减小对电机动力大小的要求，以及减小电机移动所产生的摩擦，延长电机乃至整个虚像显示设备2000的使用寿命。若动力单元2320是牵引机构，则第一连杆2330可以为用户省力。由于第一连杆2330的存在，用户施加较小的作用力，即可带动第二外壳2200移动。
在本申请实施例中，可以通过连接单元2340来实现第一连杆2330与第二外壳2200之间的连接。本申请实施例不限定第一连杆2330与第二外壳2200之间的连接方式。可选的，连接单元2340可以包括第一连接单元2341和第二连接单元2342。
如图7所示，第一连接单元2341用于实现第一连杆2330与第二外壳2200之间的固定连接。也就是说，在通过动力单元2320和第一连杆2330带动第二外壳2200靠近或远离第一外壳2100的过程中，由于第一连接单元2341的固定连接，使得第一连杆2330与第二外壳2200之间的连接角度不变。该连接结构简单，易于实现。
由于第一连杆2330的方向与第二外壳2200的移动方向相关，因此使第一连杆2330与第二外壳2200之间固定连接，可以更好地使动力单元2320的动力作用方向与第二外壳2200的移动方向贴合，更好地为动力单元2320省力。
可选的，如图8所示，连接第一连杆2330和第二外壳2200的连接单元2340也可以是活动的，第二连接单元2342用于改变第一连杆2330与第二外壳2200之间的连接角度。例如，第二连接单元2342可以是第二外壳2200上突出的轴，第一连杆2330开设有与该轴配合的孔。在第二外壳2200靠近或远离第一外壳2100的过程中，第一连杆2330与第二外壳2200之间的连接角度可以发生变化。
在本申请实施例中，第一连杆2330的长度可以根据力学设计等确定。如图9中的a图所示，若确定出的第一连杆2330的长度较小，可以使第一连杆2330与第二外壳2200固定连接(即如图7所示的固定连接)，折叠使得虚像显示设备2000的厚度由d1变为d2。
如图9中的b图所示，若确定出的第一连杆2330的长度较大，可以使第一连杆2330与第二外壳2200之间的连接角度可变(即如图8所示的活动连接)，在折叠的过程中还可以改变第一连杆2330与第二外壳之间的连接角度，使得第一连杆2330向第二外壳2200的方向折叠。折叠与改变连接角度，使得虚像显示设备2000的厚度由d1变为d2。
可选的，如图10所示，折叠机构2300还可以包括第二连杆2350，第二连杆2350用于 连接旋转轴与第一连杆。
可选的，也可以如图11所示，将折叠机构2300放置在第一外壳2100上，以使第一外壳2100靠近或远离第二外壳2200，本申请对此不做限定。若将折叠机构2300放在第一外壳2100上，动力单元2320、第一连杆2330、第二连杆2350等也将与第一外壳2100连接，连接关系参见前述图2至图10的说明，此处不再赘述。
上面说明了折叠机构2300的结构，接下来将展开说明虚像显示设备2000的其他部件。可选的，如图12所示，虚像显示设备2000还可以包括柔性密封单元2500。柔性密封单元2500用于实现对显示系统2400中各器件的保护。具体的，柔性密封单元2500与第一外壳2100、第二外壳2200形成密闭空间，显示系统2400在该密闭空间内。在第二外壳2200靠近或远离第一外壳2100的过程中，柔性密封单元2500可以发生柔性形变，从而确保上述密闭空间的密闭性，保证密闭空间中的显示系统2400各部件的防尘防水。
可选的，如图13所示，虚像显示设备2000还可以包括旋转结构2600，旋转结构2600用于驱动第一外壳2100旋转，以在不同的状态下(例如工作状态或折叠状态)使虚像显示设备2000匹配对应的位置关系。
例如图14中的a图所示，在工作状态下，旋转结构2600可以旋转第一外壳2100，从而带动图像源2410改变位置，使得图像源2410移动至人眼位置对应的目标像源位置，使得整个显示系统2400构成的光学成像系统实现成像光到人眼的成像。
如图14中的b图所示，使第二外壳2200靠近第一外壳2100，虚像显示设备2000进入折叠状态。此时，第二外壳2200的外壁与周边环境面并不配合。因此如图14中的c图所示，通过旋转结构2600旋转第一外壳2100，从而带动第二外壳2200改变位置，使得第二外壳2200的外壁与周边环境面配合。
值得注意的是，这里的周边环境面可以如图14的c图所示，是周边环境表面的延伸面。例如图14的c图中的竖直面为椅背的表面，则周边环境面可以是椅背表面的延伸面。可选的，除了椅背表面，周边环境面也可以是其他表面的延伸面，例如仪表盘台表面、中控台表面的延伸面等，本申请对此不做限定。
可选的，除了周边环境表面的延伸面，周边环境面也可以是预设的安装表面等，本申请对此不做限定。例如，若虚像显示设备2000是车上的升降HUD，在不使用时收纳在预设的安装表面之内，在使用时将HUD升起至人眼可以看到的高度，则周边环境面可以是预设的安装表面。
可选的，虚像显示设备2000从工作状态切换至折叠状态的过程中，可以如图14所示的先折叠再旋转，也可以是先旋转再折叠，或者边旋转边折叠，本申请对此不做限定。相应的，虚像显示设备2000从折叠状态切换至工作状态的过程中，也不限定展开与旋转之间的先后时序。
可选的，旋转结构2600可以是旋转轴，可以通过传动机构带动该旋转轴旋转，从而带动第一外壳2100旋转。可选的，传动机构可以是齿轮、蜗轮蜗杆、软轴等，本申请对此不做限定。
可选的，如图15所示，虚像显示设备2000还可以包括支架2700，支架2700与旋转结构2600连接，用于支撑第一外壳2100。图15所示的虚像显示设备2000结构，可以作为方 便携带的显示设备。
可选的，在本申请实施例中，虚像显示设备2000除了作为方便携带的显示设备，也可以应用在交通工具上。如图16所示，本申请实施例还提供了一种交通工具，该交通工具包括仪表盘台以及上述虚像显示设备2000，虚像显示设备2000位于仪表盘台的容纳空间中。
可选的，虚像显示设备2000的旋转轴2310可以位于仪表盘台的内部。
可选的，折叠机构2300可以使第二外壳2200移入或移出结构设备的容纳空间，以实现虚像显示设备2000在折叠状态与工作状态之间的切换。
可选的，在进入工作状态的情况下，虚像显示设备2000中的旋转结构2600可以驱动第一外壳2100旋转，使第一外壳2100上的图像源2410移动至人眼位置对应的目标像源位置。折叠机构2300可以使第二外壳2200远离第一外壳2100，使第二外壳2200上的透反单元2420移动至目标像源位置对应的透反单元位置。
可选的，该交通工具还可以还包括传感单元，传感单元用于检测人眼位置。该人眼位置可以用于确定上述目标像源位置。传感单元检测到人眼位置后，虚像显示设备2000的处理器(例如图17中的主处理器1101)即可根据人眼位置调节旋转结构2600的旋转角度。即，虚像显示设备2000可以根据人眼的实际位置自动调节俯仰角度。
可选的，在进入折叠状态的情况下，虚像显示设备2000中的旋转结构2600可以驱动第一外壳2100旋转，从而将折叠后的虚像显示设备2000旋转至仪表盘台内的容纳空间中。进一步的，旋转结构2600可以驱动第一外壳2100旋转，使第二外壳2200的外壁与仪表盘台的周边环境面配合。
可选的，除了安装在仪表盘台上，本申请实施例提供的虚像显示设备2000也可以安装在交通工具的其他结构设备上，例如椅背、交通工具内壁、操作台、处理台等，本申请对此不做限定。
可选的，若虚像显示设备2000安装在椅背/交通工具内壁/操作台/处理台上，则旋转结构2600可以驱动第一外壳2100旋转，使第二外壳2200的外壁与椅背/交通工具内壁/操作台/处理台的表面配合。
可选的，操作台可以是救护车上的抢救操作台、房车上的厨房操作台等；处理台可以是房车上的吧台、客舱中的餐桌、办工桌等，本申请对此不做限定。
可选的，本申请实施例提供的交通工具，可以是机动车、火车、飞机等，本申请对此不做限定。
图17是本申请实施例提供的虚像显示设备2000的电路示意图。如图17所示，虚像显示设备2000中的电路主要包括包含主处理器(host CPU)1101，外部存储器接口1102，内部存储器1103，音频模块1104，视频模块1105，电源模块1106，无线通信模块1107，I/O接口1108、视频接口1109、显示电路1110和调制器1111等。其中，主处理器1101与其周边的元件，例如外部存储器接口1102，内部存储器1103，音频模块1104，视频模块1105，电源模块1106，无线通信模块1107，I/O接口1108、视频接口1109、显示电路1110可以通过总线连接。主处理器1101可以称为前端处理器。
另外，本申请实施例示意的电路图并不构成对虚像显示设备2000的具体限定。在本申请 另一些实施例中，虚像显示设备2000可以包括比图示更多或更少的部件，或者组合某些部件，或者拆分某些部件，或者不同的部件布置。图示的部件可以以硬件，软件或软件和硬件的组合实现。
其中，主处理器1101包括一个或多个处理单元，例如：主处理器1101可以包括应用处理器(application processor，AP)，调制解调处理器，图形处理器(graphics processing unit，GPU)，图像信号处理器(image signal processor，ISP)，控制器，视频编解码器，数字信号处理器(digital signal processor，DSP)，基带处理器，和/或神经网络处理器(neural-network processing unit，NPU)等。其中，不同的处理单元可以是独立的器件，也可以集成在一个或多个处理器中。
主处理器1101中还可以设置存储器，用于存储指令和数据。在一些实施例中，主处理器1101中的存储器为高速缓冲存储器。该存储器可以保存主处理器1101刚用过或循环使用的指令或数据。如果主处理器1101需要再次使用该指令或数据，可从所述存储器中直接调用。避免了重复存取，减少了主处理器1101的等待时间，因而提高了系统的效率。
在一些实施例中，虚像显示设备2000还可以包括多个连接到主处理器1101的输入输出(input/output，I/O)接口1108。I/O接口1108可以包括集成电路(inter-integrated circuit，I2C)接口，集成电路内置音频(inter-integrated circuit sound，I2S)接口，脉冲编码调制(pulse code modulation，PCM)接口，通用异步收发传输器(universal asynchronous receiver/transmitter，UART)接口，移动产业处理器接口(mobile industry processor interface，MIPI)，通用输入输出(general-purpose input/output，GPIO)接口，用户标识模块(subscriber identity module，SIM)接口，和/或通用串行总线(universal serial bus，USB)接口等。上述I/O接口1108可以连接鼠标、触摸板、键盘、摄像头、扬声器/喇叭、麦克风等设备，也可以连接虚像显示设备2000上的物理按键(例如音量键、亮度调节键、开关机键等)。
外部存储器接口1102可以用于连接外部存储卡，例如Micro SD卡，实现扩展虚像显示设备2000的存储能力。外部存储卡通过外部存储器接口1102与主处理器1101通信，实现数据存储功能。
内部存储器1103可以用于存储计算机可执行程序代码，所述可执行程序代码包括指令。内部存储器1103可以包括存储程序区和存储数据区。其中，存储程序区可存储操作系统，至少一个功能所需的应用程序(比如通话功能，时间设置功能等)等。存储数据区可存储虚像显示设备2000使用过程中所创建的数据(比如电话簿，世界时间等)等。此外，内部存储器1103可以包括高速随机存取存储器，还可以包括非易失性存储器，例如至少一个磁盘存储器件，闪存器件，通用闪存存储器(universal flash storage，UFS)等。主处理器1101通过运行存储在内部存储器1103的指令，和/或存储在设置于主处理器1101中的存储器的指令，执行虚像显示设备2000的各种功能应用以及数据处理。
虚像显示设备2000可以通过音频模块1104以及应用处理器等实现音频功能。例如音乐播放，通话等。
音频模块1104用于将数字音频信息转换成模拟音频信号输出，也用于将模拟音频输入转换为数字音频信号。音频模块1104还可以用于对音频信号编码和解码，例如进行放音或录音。在一些实施例中，音频模块1104可以设置于主处理器1101中，或将音频模块1104的部分功 能模块设置于主处理器1101中。
视频接口1109可以接收外部输入的音视频信号，其具体可以为高清晰多媒体接口(high definition multimedia interface，HDMI)，数字视频接口(digital visual interface，DVI)，视频图形阵列(video graphics array，VGA)，显示端口(display port，DP)等，视频接口1109还可以向外输出视频。当虚像显示设备2000作为抬头显示使用时，视频接口1109可以接收周边设备输入的速度信号、电量信号，还可以接收外部输入的AR视频信号。当虚像显示设备2000作为投影仪使用时，视频接口1109可以接收外部电脑或终端设备输入的视频信号。
视频模块1105可以对视频接口1109输入的视频进行解码，例如进行H.264解码。视频模块还可以对虚像显示设备2000采集到的视频进行编码，例如对外接的摄像头采集到的视频进行H.264编码。此外，主处理器1101也可以对视频接口1109输入的视频进行解码，然后将解码后的图像信号输出到显示电路1110。
显示电路1110和调制器1111用于显示对应的图像。在本实施例中，视频接口1109接收外部输入的视频源信号，视频模块1105进行解码和/或数字化处理后输出一路或多路图像信号至显示电路1110，显示电路1110根据输入的图像信号驱动调制器1111将入射的偏振光进行成像，进而输出成像光。此外，主处理器1101也可以向显示电路1110输出图像信号。
电源模块1106用于根据输入的电力(例如直流电)为主处理器1101和光源110提供电源，电源模块1106中可以包括可充电电池，可充电电池可以为主处理器1101和光源110提供电源。光源110发出的光可以传输到调制器1111进行成像，从而形成图像光信号。
无线通信模块1107可以使得虚像显示设备2000与外界进行无线通信，其可以提供无线局域网(wireless local area networks，WLAN)(如无线保真(wireless fidelity，Wi-Fi)网络)，蓝牙(Bluetooth，BT)，全球导航卫星系统(global navigation satellite system，GNSS)，调频(frequency modulation，FM)，近距离无线通信技术(near field communication，NFC)，红外技术(infrared，IR)等无线通信的解决方案。无线通信模块1107可以是集成至少一个通信处理模块的一个或多个器件。无线通信模块1107经由天线接收电磁波，将电磁波信号调频以及滤波处理，将处理后的信号发送到主处理器1101。无线通信模块1107还可以从主处理器1101接收待发送的信号，对其进行调频，放大，经天线转为电磁波辐射出去。
另外，视频模块1105进行解码的视频数据除了通过视频接口1109输入之外，还可以通过无线通信模块1107以无线的方式接收或从外部存储器中读取，例如虚像显示设备2000可以通过车内的无线局域网从终端设备或车载娱乐系统接收视频数据，虚像显示设备2000还可以读取外部存储器中存储的音视频数据。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统，装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统，装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信 连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(read-only memory，ROM)、随机存取存储器(random access memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。

Claims (16)

  1. 一种虚像显示设备(2000)，其特征在于，包括第一外壳(2100)、第二外壳(2200)、连接所述第一外壳(2100)和所述第二外壳(2200)的折叠机构(2300)、和显示系统(2400)；
    所述显示系统(2400)包括图像源(2410)、透反单元(2420)和反射单元(2430)，所述图像源(2410)和所述反射单元(2430)与所述第一外壳(2100)的内壁连接，所述透反单元(2420)与所述第二外壳(2200)连接；
    所述第二外壳(2200)在所述折叠机构(2300)的作用下，靠近或远离所述第一外壳(2100)。
  2. 根据权利要求1所述的设备，其特征在于，所述折叠机构(2300)包括：连接所述第一外壳(2100)和所述第二外壳(2200)的旋转轴(2310)，以及与所述第二外壳(2200)连接的动力单元(2320)；
    所述动力单元(2320)用于带动所述第二外壳(2200)靠近或远离所述第一外壳(2100)。
  3. 根据权利要求2所述的设备，其特征在于，所述折叠机构(2300)还包括：第一连杆(2330)，所述动力单元(2320)通过所述第一连杆(2330)连接到所述第二外壳(2200)。
  4. 根据权利要求3所述的设备，其特征在于，还包括：用于连接所述第一连杆(2330)与所述第二外壳(2200)的第一连接单元(2341)。
  5. 根据权利要求3所述的设备，其特征在于，所述折叠机构(2300)还包括连接所述第一连杆(2330)与所述第二外壳(2200)的第二连接单元(2342)，所述第二连接单元(2342)用于改变所述第一连杆(2330)与所述第二外壳(2200)之间的连接角度。
  6. 根据权利要求3至5中任一项所述的设备，其特征在于，所述折叠机构(2300)还包括：连接所述旋转轴(2310)与所述连接单元(2340)的第二连杆(2350)。
  7. 根据权利要求2至6中任一项所述的设备，其特征在于，所述动力单元(2320)包括动力源机构或牵引机构，所述动力源机构或牵引机构用于移动所述第二外壳(2200)。
  8. 根据权利要求1至7中任一项所述的设备，其特征在于，还包括柔性密封单元(2500)，所述柔性密封单元(2500)与所述第一外壳(2100)、所述第二外壳(2200)形成密闭空间，所述显示系统(2400)在所述密闭空间内。
  9. 根据权利要求1至8中任一项所述的设备，其特征在于，还包括驱动所述第一外壳(2100)旋转的旋转结构(2600)。
  10. 根据权利要求9所述的设备，其特征在于，还包括支架(2700)，所述支架(2700)与所述旋转结构(2600)连接，所述支架(2700)用于支撑所述第一外壳(2100)。
  11. 一种交通工具，其特征在于，包括结构设备以及如权利要求1至10中任一项所述的虚像显示设备(2000)，所述虚像显示设备(2000)位于所述结构设备的容纳空间中。
  12. 根据权利要求11所述的交通工具，其特征在于，所述结构设备包括下述至少一项：
    仪表盘台、椅背、交通工具内壁、操作台和处理台。
  13. 根据权利要求11或12所述的交通工具，其特征在于，所述虚像显示设备(2000)的旋转轴(2310)位于所述结构设备内部。
  14. 根据权利要求11至13中任一项所述的交通工具，其特征在于，
    所述折叠机构(2300)用于使所述第二外壳(2200)移入或移出所述容纳空间。
  15. 根据权利要求14中所述的交通工具，其特征在于，
    所述旋转结构(2600)用于驱动所述第一外壳(2100)旋转，将折叠后的所述虚像显示设备(2000)旋转至所述容纳空间。
  16. 根据权利要求14所述的交通工具，其特征在于，还包括传感单元，所述传感单元用于检测人眼位置。
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