TWI866289B - Picture generation unit, head-up display device and vehicle - Google Patents

Abstract

The present disclosure provides a picture generation unit including an upper shell, a lower shell, an image display module, and a driver module. The lower shell and the upper shell can be engaged with relative sliding. The image display module comprises a backlight module and a liquid crystal panel. The backlight module is fixed on the lower shell, the liquid crystal panel is fixed on the upper shell, the backlight module is used to emit a backlight to the liquid crystal panel, the liquid crystal panel is used to emit an imaging light after modulating the backlight. The driver module is used to drive the motion of the upper housing with respect to the lower housing to change the distance of the liquid crystal panel with respect to the backlit module. The present disclosure also provides a head-up display device applying the picture generation unit and a vehicle applying the head-up display device.

Description

Image generation unit, head-up display device, and vehicle

This application relates to the field of automotive accessories, and in particular to an image generation unit, a head-up display device using the image generation unit, and a vehicle using the head-up display device.

Head-up-Display (HUD) is an intelligent vehicle system that can project important driving information such as speed, navigation, and road conditions onto the windshield in front of the driver, allowing the driver to view important driving information without lowering or turning his head, effectively improving driving efficiency and driving safety.

At present, the virtual image projected on the windshield by conventional HUD has a fixed virtual image distance according to the design of HUD. Therefore, when the driver's line of sight is focused on a relatively close or relatively far object, the driver will not be able to see the virtual image projected by HUD on the windshield clearly. At present, the known technology can only change the virtual image distance of HUD by two projectors set on the adjustment component. The two projectors generate two image beams respectively and project them onto the reflective mechanism along different projection light paths. The disadvantage of the known technology is that the HUD device for adjusting the virtual image distance is not automatic and fast, and cannot be integrated.

The first aspect of the present application provides an image generation unit, comprising: an upper housing; a lower housing, the lower housing being slidably coupled to the upper housing; an image display module, comprising a backlight module and a liquid crystal panel, the backlight module being fixed to the lower housing, the liquid crystal panel being fixed to the upper housing, the backlight module being used to emit backlight to the liquid crystal panel, the liquid crystal panel being used to modulate the backlight and emit imaging light; and a drive module, being used to drive the upper housing to move relative to the lower housing, so as to change the distance of the liquid crystal panel relative to the backlight module.

In one embodiment, the backlight module is fixed on the lower housing; the upper housing includes a first sleeve, a front cover and a liquid crystal panel frame, the front cover is fixed to a side of the liquid crystal panel away from the backlight module, the liquid crystal panel frame is fixed to a side of the liquid crystal panel close to the backlight module, and the front cover and the liquid crystal panel frame are both buckled to an end of the first sleeve away from the backlight module.

In one embodiment, a positioning column is provided on the outer side wall of the first sleeve, and a slide groove is provided on the side of the lower shell, and the slide groove is provided corresponding to the positioning column; the lower shell is sleeved on the outer side of the first sleeve, and the positioning column can be slidably accommodated in the slide groove. Under the action of the driving module, the first sleeve moves linearly relative to the lower shell.

The image generation unit provided in the embodiment of the present application, by providing a positioning column on the first sleeve and accommodating the positioning column in the slide groove, enables the upper shell to move vertically linearly relative to the lower shell without deflection in the vertical direction, and solves the problem of position deflection when the upper shell moves relative to the lower shell in a simple and easy-to-operate manner, and achieves good use effect at low cost.

In one embodiment, the drive module includes a motor and a transmission rod, the transmission rod is fixed to the upper housing, and the motor is used to drive the transmission rod to move linearly so that the upper housing moves linearly relative to the lower housing.

In one embodiment, the transmission rod includes a gear, and the rotating shaft of the motor includes a gear, and the gear is engaged with the gear.

In one embodiment, the backlight module includes a light source, a focusing plate, a partition plate, and a diffusion plate. The light source is fixed to one end of the lower housing, and the partition plate is accommodated and fixed to the lower housing; the focusing plate is located on the side of the partition plate close to the liquid crystal panel, and the focusing plate is accommodated and fixed to the lower housing. The light source emits the backlight, which passes through the partition plate and reaches the focusing plate, and the focusing plate gathers the backlight to the diffusion plate; the diffusion plate is accommodated and fixed to the lower housing, and the diffusion plate is located on the side of the focusing plate close to the liquid crystal panel. The backlight is diffused by the diffusion plate and then transmitted to the liquid crystal panel for modulation.

The image generation unit provided in the embodiment of the present application uses the motor of the driving module to drive the transmission rod to make linear movement so that the upper housing makes linear movement relative to the lower housing, thereby changing the distance between the liquid crystal panel and the backlight module, and conveniently and quickly solving the problem that the virtual image distance cannot be automatically and quickly adjusted according to the distance of the driver's line of sight focus position.

The second aspect of the present application provides a head-up display device using the above-mentioned image generation unit, comprising: an eye tracking device for tracking the user's eyes and for calculating the distance between the eyes and the position where the eyes are looking to generate a distance signal; a control module for receiving the distance signal transmitted by the eye tracking device and for generating and sending a control signal according to the distance signal; an image generation unit of any of the above-mentioned embodiments for emitting the imaging light; and an optical display system for receiving the imaging light and projecting the imaging light into the eyes; wherein the image generation unit is also used to receive the control signal and adjust the distance of the liquid crystal panel relative to the backlight module according to the control signal, thereby adjusting the distance of the liquid crystal panel relative to the optical display system.

In one embodiment, the optical display system includes an imaging glass and a reflective portion, wherein the reflective portion is used to reflect the imaging light and project it onto the imaging glass, and the imaging glass is used to receive the imaging light and form a virtual image on a side of the imaging glass away from the user.

In one embodiment, the reflection part includes a first curved reflector and a second curved reflector, the first curved reflector reflects the imaging light to the second curved reflector, and the second curved reflector receives the imaging light and reflects it to the imaging glass.

The head-up display device provided by the embodiment of the present application, after the image generation unit receives the control signal, changes the distance of the imaging light emitted by the upper shell to the optical display system by the relative movement between the upper shell and the lower shell in the image generation unit, thereby changing the distance from the virtual image finally formed by the optical display system to the user's eyes, conveniently and quickly solving the problem that the driver cannot see the virtual image information projected by the head-up display device when the visual focus is at a relatively close or relatively far distance, and effectively increases the driving safety. Compared with installing two image generation units at different positions on the head-up display device, it not only effectively reduces the cost, but also improves the convenience and speed.

The third aspect of the present application provides a vehicle using the above-mentioned head-up display device, comprising: a main body; and a head-up display device of any of the above-mentioned embodiments, wherein the head-up display device is arranged on the main body.

The vehicle has the head-up display device described in the second aspect and the image generation unit described in the first aspect, and therefore has the same beneficial effects, which will not be elaborated here.

100: Image generation unit

1: Upper shell

10: First sleeve

10a: Positioning column

11: Front cover

11a: Front cover buckle

13: LCD panel frame

13a: Frame buckle

2: Lower housing

20: Chute

3: Image display module

31: Backlight module

311: Luminous light source

313: Focusing plate

315: Isolation board

315a: Isolation section

315b:Through hole

317: Diffuse tablets

33: LCD panel

4:Drive module

40: Motor

40a: Gear

41: Drive rod

41a: Tooth

200: Heads-up display device

21: Eye tracking device

E: Eyes

23: Control module

23a: Control chip

25:Optical display system

250: Imaging glass

251: Reflection part

251a: First curved reflector

251b: Second curved reflector

300: Vehicles

301:Entity

Figure 1 is a schematic diagram of the disassembly of the image generation unit structure of the first embodiment of this application.

Figure 2 is a schematic diagram of the image generation unit structure of the first embodiment of this application.

Figure 3 is a schematic diagram of the structure of the head-up display device of the second embodiment of this application.

Figure 4 is a schematic diagram of the vehicle structure of the third embodiment of this application.

The following will combine the attached figures in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of them.

Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by technicians in the technical field of this application. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

In order to further explain the technical means and effects adopted by the present invention to achieve the intended purpose, the following detailed description of this application is made in conjunction with the attached drawings and the best implementation method.

Implementation Example 1

The image generation unit 100 provided in the embodiment of the present application, please refer to FIG1, includes: an upper housing 1; a lower housing 2, the lower housing 2 and the upper housing 1 can be slidably engaged relative to each other; an image display module 3, including a backlight module 31 and a liquid crystal panel 33, the backlight module 31 is fixed on the lower housing 2, the liquid crystal panel 33 is fixed on the upper housing 1, the backlight module 31 is used to emit backlight to the liquid crystal panel 33, and the liquid crystal panel 33 is used to modulate the backlight and emit imaging light; and a driving module 4, which is used to drive the upper housing 1 to move relative to the lower housing 2 to change the distance of the liquid crystal panel 33 relative to the backlight module 31.

In this embodiment, the image generation unit 100 is used to generate a HUD output image, and use an optical display system (not shown) to project the image onto an imaging glass (not shown). This embodiment adopts the thin film transistor liquid crystal display (TFT-LCD) mode. Specifically, the TFT-LCD mode uses a liquid crystal display (LCD) to be illuminated by a backlight source, and uses a thin film transistor integrated behind each pixel point of the LCD panel to drive the liquid crystal molecules to rotate and change the polarization state of the light source to present different images. Light and dark grayscale, and then use color filters to present color images. TFT-LCD not only has mature technology and low cost, but also can display image information with high response speed, high brightness and high contrast.

Please refer to Figure 1. In this embodiment, the backlight module 31 is fixed on the lower housing 2; the upper housing 1 includes a first sleeve 10, a front cover 11 and a liquid crystal panel frame 13. The front cover 11 is fixed to a side of the liquid crystal panel 33 away from the backlight module 31, and the liquid crystal panel frame 13 is fixed to a side of the liquid crystal panel 33 close to the backlight module 31. The front cover 11 and the liquid crystal panel frame 13 are both buckled at one end of the first sleeve 10 away from the backlight module 31.

The edge of the LCD panel frame 13 extends outward from a frame buckle 13a in a direction close to the first sleeve 10. The frame buckle 13a is used to buckle and fix the LCD panel frame 13 with the protruding structure on the surface of the first sleeve 10 away from the first sleeve 10. The LCD panel frame 13 is used to place and fix the LCD panel 33 on one side close to the backlight module 31. The edge of the front cover 11 extends toward the direction close to the first sleeve 10, and the front cover 11 buckle is used to snap and fix the front cover 11 with a raised structure on the surface of the first sleeve 10 away from the first sleeve 10. The front cover 11 is used to fix the liquid crystal panel 33 to a side of the liquid crystal panel 33 away from the backlight module 31. The liquid crystal panel frame 13 and the front cover 11 can be made of the same metal material as the first sleeve 10, or can be made of rubber or stainless steel material different from the first sleeve 10, etc., and this application does not impose any restrictions. In this embodiment, please refer to Figure 2. A positioning column 10a is provided on the outer wall of the first sleeve 10. The material of the positioning column 10a can be the same metal material as the first sleeve 10, or it can be different from the material of the first sleeve 10. The positioning column 10a can be plastic, stainless steel or other materials.

The lower shell 2 is sleeve-shaped. There is a slide groove 20 on the side of the lower shell 2, and the slide groove 20 is arranged corresponding to the positioning column 10a; the lower shell 2 is sleeved on the outer side of the first sleeve 10, and the positioning column 10a can be slidably accommodated in the slide groove 20. Under the action of the drive module 4, the first sleeve 10 moves linearly relative to the lower shell 2. Since the positioning column 10a moves in the slide groove 20, the upper shell 1 moves linearly relative to the lower shell 2 along the range of the slide groove 20.

Please refer to FIG. 1 and FIG. 2 together. The image generation unit 100 provided in the embodiment of the present application, by setting a positioning column 10a on the first sleeve 10 and accommodating the positioning column 10a in the slide groove 20, enables the upper housing 1 to move vertically linearly relative to the lower housing 2 with almost no deflection in the vertical direction, and solves the problem of position deflection when the upper housing 1 moves relative to the lower housing 2 in a simple and easy-to-operate manner, and achieves good use effect at low cost. In this embodiment, the drive module 4 includes a motor 40 and a transmission rod 41, and the transmission rod 41 is fixed to the upper housing 1. The motor 40 is used to drive the transmission rod 41 to move linearly so that the upper housing 1 moves linearly relative to the lower housing 2. The transmission rod 41 can be processed into a gear 41a by inserting, planing, and milling. The rotating shaft of the motor 40 includes a gear 40a, and the gear 40a is engaged with the gear 41a. When the gear 40a on the motor 40 rotates, it drives the gear 41a, thereby driving the transmission rod 41 to move vertically linearly.

In other embodiments, a screw can be installed on the surface of the lower housing 2, and the motor 40 can be engaged and fixed on the screw on the surface of the lower housing 2. The motor 40 can be used to drive the transmission rod 41 on one side of the upper housing 1 to rotate, thereby making the upper housing 1 move linearly. This can also achieve a better effect by making the upper housing 1 move vertically relative to the lower housing 2. This is not limited in this application.

The image generation unit 100 provided in the embodiment of the present application uses the motor 40 of the driving module 4 to drive the transmission rod 41 to make a linear movement so that the upper housing 1 makes a linear movement relative to the lower housing 2, thereby changing the distance between the liquid crystal panel 33 and the backlight module 31, and conveniently and quickly solving the problem that the virtual image distance cannot be automatically and quickly adjusted according to the distance of the driver's line of sight focus position.

In this embodiment, the backlight module 31 includes a light source 311, a focusing plate 313, a partition plate 315 and a diffusion sheet 317. The light source 311 is fixed to one end of the lower housing 2, and the partition plate 315 is accommodated and fixed to the lower housing 2; the focusing plate 313 is located on a side of the partition plate 315 close to the liquid crystal panel 33, and the focusing plate 313 is accommodated and fixed to the lower housing. 2. The backlight emitted by the light source 311 passes through the isolation plate 315 and reaches the focusing plate 313. The focusing plate 313 gathers the backlight to the diffusion plate 317. The diffusion plate 317 is accommodated and fixed to the lower housing 2, and the diffusion plate 317 is located on the side of the focusing plate 313 close to the liquid crystal panel 33. The backlight is diffused by the diffusion plate 317 and then transmitted to the liquid crystal panel 33 for modulation.

In this embodiment, the light source 311 uses a light emitting diode (LED) backlight panel, and the light emitting diode (LED) has the characteristics of high brightness and moderate cost. In other embodiments, the light source 311 can also use a cold cathode fluorescent lamp (CCFL) as a light source. Specifically, the focusing plate 313 is used to correct the direction of the light source 311, so that the light source 311 is focused on the front, and the unused light outside the viewing angle can be recycled and used, while improving the overall brightness and uniformity, achieving a brightening effect.

In this embodiment, the isolation plate 315 includes an isolation portion 315a and a plurality of through holes 315b formed by the isolation portion 315a. The through holes 315b of the same size and density between the isolation portions 315a are used to accommodate the light source 311 and evenly hit the focusing plate 313. Then, after the optical convergence of the focusing plate 313, the light source 311 becomes uniform and is provided to the liquid crystal panel 33 for modulation. The isolation plate 315 can make the backlight uniformly emitted, making the emitted backlight distribution more uniform.

When the backlight is emitted from the isolation plate 315 and passes through the focusing plate 313, the focusing plate 313 mainly focuses the scattered backlight within a certain range and emits it to the diffusion plate 317, thereby increasing the backlight brightness within the range. In this embodiment, the focusing plate 313 is a lens. When passing through the diffusion plate 317, it is focused to a certain emission angle, thereby achieving the function of enhancing the brightness of the emitted light. In addition, the particles of different sizes in the diffusion plate 317 also ensure that the light will not be directly emitted from the diffusion plate 317, thereby achieving the effect of atomization, which can make the backlight illumination more uniform.

Specifically, the backlight is guided by the backlight module 31 to the back of the liquid crystal panel 33. The liquid crystal molecules of the liquid crystal panel 33 will change according to the action of the electric field, which will cause the polarization direction of the light to change, thereby controlling the transmission and blocking of the light, and finally forming a visible image.

The image generation unit 100 provided in the embodiment of the present application drives the upper housing 1 to move linearly relative to the lower housing 2 through the driving module 4, thereby changing the distance between the liquid crystal panel 33 and the backlight module 31, and conveniently and quickly solving the problem that the virtual image distance cannot be automatically and quickly adjusted according to the distance of the driver's line of sight focus position.

Implementation Example 2

The head-up display device 200 provided in the embodiment of the present application, please refer to FIG. 3, includes: an eye tracking device 21, which is used to track the user's eye E and to calculate the distance between the eye E and the position where the eye E is looking to generate a distance signal; a control module 23, which is used to receive the distance signal transmitted by the eye tracking device 21, and to generate and send a control signal according to the distance signal; an image generation unit 100 in any of the above embodiments, which is used to emit imaging light; and an optical display system 25, which is used to receive imaging light and project the imaging light into the eye E. The image generation unit 100 is also used to receive the control signal, and adjust the distance of the liquid crystal panel 33 relative to the backlight module 31 according to the control signal, thereby adjusting the distance of the liquid crystal panel 33 relative to the optical display system 25.

When the eye E focuses on a far position, the eye tracking device 21 tracks that the position where the eye is looking is far away. At this time, the position of the image needs to be adjusted. The eye tracking device 21 generates a distance signal and transmits it to the control module 23. The control chip 23a in the control module 23 needs to generate and send a control signal according to the distance signal and transmit it to the image generation unit 100. Since the eye E is looking at a far position, the position of the image needs to be adjusted and made to be far away from the eye E. After the image generation unit 100 receives the control signal, the driving module (not shown) drives the upper housing 1 to move linearly relative to the lower housing 2. The distance between the liquid crystal panel 33 and the optical display system 25 is adjusted, and the distance between the liquid crystal panel 33 and the optical display system is increased, so that the distance between the image finally projected onto the optical display system 25 and the eye E is increased.

In this embodiment, the eye tracking device 21 can be a camera, which is used to track the spatial position coordinates of the eye E in real time, and calculate the distance of the focus position of the eye E relative to the position of the eye E by taking a photo of the eye E with the camera. The specific working method of the eye tracking device 21 is not limited in this application. In other embodiments, the eye tracking device 21 can also be a light reflection eye tracker (not shown). The light reflection eye tracker uses an infrared emitting device to emit infrared light to the eye E, and the eye E reflects the infrared light. The camera or other specially designed optical sensors are used for measurement, and then the measurement information is analyzed to extract the rotation information of the eye E from the change of the reflected light spot to achieve accurate eye movement tracking. The main purpose of the eye tracking device 21 is to track the user's eye E to obtain the distance signal of the human eye vision, and then transmit the distance signal of the eye E vision to the control module 23.

In this embodiment, the optical display system 25 includes an imaging glass 250 and a reflective portion 251. The reflective portion 251 is used to reflect imaging light and project it onto the imaging glass 250. The imaging glass 250 is used to receive imaging light and form a virtual image on the side of the imaging glass 250 that is far from the user. Specifically, the structure of the imaging glass 250 can have two layers of glass or a single layer of glass. A layer of film can be added between the two layers of glass to eliminate ghosting according to user needs, so that the glass is thick on the top and thin on the bottom, thereby making the image clearer.

In this embodiment, the imaging glass 250 can be a windshield on a vehicle, or a semi-reflective and semi-transparent curved reflector for receiving the imaging light reflected by the second curved reflector 251b.

In this embodiment, the reflective portion 251 includes a first curved reflective mirror 251a and a second curved reflective mirror 251b. The first curved reflective mirror 251a reflects the imaging light to the second curved reflective mirror 251b. The second curved reflective mirror 251b receives the imaging light and reflects it to the imaging glass 250. The reflective portion 251 and the imaging glass 250 need to be fitted to eliminate image distortion as much as possible.

In this embodiment, the control module 23 is used to receive the distance signal transmitted by the human eye tracking device 21, and to generate and send a control signal according to the distance signal. The control module 23 is electrically connected to the human eye tracking device 21, and is used to transmit the distance signal of the eye E vision. The control module 23 also includes a control chip 23a, and the control module 23 is also electrically connected to the image generation unit 100. The control module 23 generates and sends a control signal, which is used to transmit the control signal to the image generation unit 100, so that the image generation unit 100 performs vertical linear movement. The control signal can control the image generation unit 100 to perform vertical linear movement, thereby adjusting the distance from the image generation unit 100 to the reflection part 251, and further adjusting the virtual image distance.

The head-up display device 200 provided in the embodiment of the present application, after the image generating unit 100 receives the control signal, changes the distance of the imaging light emitted by the image generating unit 100 to reach the optical display system 25 by relative movement between the upper shell 1 and the lower shell 2 in the image generating unit 100, thereby changing the distance from the virtual image finally formed by the optical display system 25 to the user's eye E, which is beneficial to solve the problem that the driver cannot clearly see the virtual image information projected by the head-up display device 200 when the visual focus is at a relatively close or relatively far distance, thereby effectively increasing driving safety. Compared with installing two image generation units 100 at different positions on the head-up display device 200, it not only effectively reduces the cost, but also improves convenience and speed.

Implementation Example 3

Please refer to Figure 4. Embodiment 3 of the present application also provides a vehicle 300 using the head-up display device 200 of any of the above embodiments. The vehicle 300 includes: a body 301 and the head-up display device 200 of any of the above embodiments, and the head-up display device 200 is arranged on the body 301.

In this embodiment, the imaging glass (not shown) can be a windshield (not shown) on the vehicle 300, or a semi-reflective and semi-transparent curved reflector disposed on the side of the windshield close to the user to receive the imaging light reflected by the second curved reflector (not shown). The windshield structure can have two layers of glass, inner and outer, or a single layer of glass. A layer of film can be added according to user needs to eliminate ghosting, reduce the aberration of the optical display system, and make the glass thicker on the top and thinner on the bottom, thereby making the image clearer.

In this embodiment, the vehicle 300 can be an electric vehicle, a car, a diesel vehicle, etc., and this application does not impose any restrictions. The head-up display device 200 can be a combined head-up display device (C-HUD), an augmented reality head-up display device (AR-HUD), or a windshield head-up display device (W-HUD), and this application does not impose any restrictions.

The present application provides a vehicle that applies any of the above embodiments, and by being provided with a head-up display device 200 that applies any of the above embodiments, the virtual image distance is adjusted, and the problem that the virtual image distance cannot be automatically and quickly adjusted according to the distance of the driver's line of sight focus position is solved conveniently and quickly.

Those with ordinary knowledge in this field should recognize that the above implementation is only used to illustrate the present invention, and is not used as a limitation of the present invention. As long as it is within the spirit of the present invention, appropriate changes and modifications made to the above implementation are within the scope of protection required by the present invention.

100: Image generation unit

1: Upper shell

10: First sleeve

10a: Positioning column

11: Front cover

11a: Front cover buckle

13: LCD panel frame

13a: Frame buckle

2: Lower housing

20: Chute

3: Image display module

31: Backlight module

311: Luminous light source

313: Focusing plate

315: Isolation board

315a: Isolation section

315b:Through hole

317: Diffuse tablets

33: LCD panel

4:Drive module

40: Motor

40a: Gear

41: Drive rod

41a: Tooth

Claims (9)

An image generating unit comprises: an upper housing; a lower housing, wherein the lower housing and the upper housing are slidably connected relative to each other; an image display module, comprising a backlight module and a liquid crystal panel, wherein the backlight module is fixed to the lower housing, and the liquid crystal panel is fixed to the upper housing, wherein the backlight module is used to emit backlight to the liquid crystal panel, and the liquid crystal panel is used to modulate the backlight and emit the backlight to the liquid crystal panel. Imaging light; and a driving module, used to drive the upper housing to move relative to the lower housing to change the distance of the liquid crystal panel relative to the backlight module; wherein the driving module includes a motor and a transmission rod, the transmission rod is fixed to the upper housing, and the motor is used to drive the transmission rod to move linearly so that the upper housing moves linearly relative to the lower housing. The image generation unit as described in claim 1, wherein the backlight module is fixed on the lower housing; the upper housing includes a first sleeve, a front cover and a liquid crystal panel frame, the front cover is fixed to a side of the liquid crystal panel away from the backlight module, the liquid crystal panel frame is fixed to a side of the liquid crystal panel close to the backlight module, and the front cover and the liquid crystal panel frame are both buckled to an end of the first sleeve away from the backlight module. The image generation unit as described in claim 2, wherein a positioning column is provided on the outer side wall of the first sleeve, and a slide groove is provided on the side of the lower shell, and the slide groove is provided corresponding to the positioning column; the lower shell is sleeved on the outer side of the first sleeve, and the positioning column can be slidably accommodated in the slide groove, and under the action of the driving module, the first sleeve moves linearly relative to the lower shell. The image generation unit as described in claim 3, wherein the transmission rod includes a gear, the rotating shaft of the motor includes a gear, and the gear is engaged with the gear. The image generation unit as described in claim 1, wherein the backlight module includes a light source, a focusing plate, a partition plate and a diffusion plate, the light source is fixed to one end of the lower housing, the partition plate is accommodated and fixed to the lower housing; the focusing plate is located on the side of the partition plate close to the liquid crystal panel, and the focusing plate is accommodated and fixed to the lower housing, the light source emits the backlight, passes through the partition plate and then reaches the focusing plate, the focusing plate gathers the backlight to the diffusion plate; the diffusion plate is accommodated and fixed to the lower housing, and the diffusion plate is located on the side of the focusing plate close to the liquid crystal panel, and the backlight is diffused by the diffusion plate and then transmitted to the liquid crystal panel for modulation. A head-up display device comprises: an eye tracking device for tracking the user's eyes and for calculating the distance between the eyes and the position where the eyes are looking to generate a distance signal; a control module for receiving the distance signal transmitted by the eye tracking device and for generating and sending a control signal according to the distance signal; an image generation unit as described in any one of claim 1 to claim 6, for emitting the imaging light; and an optical display system for receiving the imaging light and projecting the imaging light into the eyes; wherein the image generation unit is also used to receive the control signal and adjust the distance of the liquid crystal panel relative to the backlight module according to the control signal, thereby adjusting the distance of the liquid crystal panel relative to the optical display system. A head-up display device as described in claim 6, wherein the optical display system includes an imaging glass and a reflective portion, the reflective portion is used to reflect the imaging light and project it onto the imaging glass, and the imaging glass is used to receive the imaging light and form a virtual image on a side of the imaging glass away from the user. A head-up display device as described in claim 7, wherein the reflecting portion includes a first curved reflector and a second curved reflector, the first curved reflector reflects the imaging light to the second curved reflector, and the second curved reflector receives the imaging light and reflects it to the imaging glass. A vehicle, comprising: a body; and a heads-up display device as described in any one of claim 6 to claim 8, wherein the heads-up display device is arranged on the body.

Images