Vehicle-mounted projection control system and vehicle

Abstract

The application discloses a vehicle-mounted projection control system and a vehicle, relates to the technical field of vehicle-mounted projection, and comprises a vehicle-mounted host computer, an input end connected with an external device, a laser light source control module, an input end connected with an output end of the vehicle-mounted host computer, a head-up display function module, a first relative position of the laser light source control module, and the vehicle-mounted host computer is connected, and is used for realizing the head-up display function based on the first output information of the vehicle-mounted host computer when the laser light source control module is in the first fixed position, wherein the first relative position is the projection lens position of the first fixed position, a user projection function module, a second relative position of the laser light source control module, and the vehicle-mounted host computer is connected, and is used for realizing the user projection function based on the second output information of the external device when the laser light source control module is in the second fixed position, wherein the second relative position is the projection lens position of the second fixed position. The application improves the functionality of vehicle-mounted projection.

Description

Technical Field

[0001] This application relates to the field of vehicle projection technology, and in particular to a vehicle projection control system and vehicle. Background Technology

[0002] As vehicles become increasingly common, users are placing higher demands on the control methods for in-vehicle projection.

[0003] Traditional in-vehicle projection control methods use a separate projection device to project audio and video entertainment onto the rear seats of the vehicle. This method has certain drawbacks, as the projection device can only be viewed by the rear seats, resulting in limited functionality of the in-vehicle projection system. Utility Model Content

[0004] The main purpose of this application is to provide an in-vehicle projection control system and vehicle, which aims to solve the technical problem of low functionality of in-vehicle projection.

[0005] To achieve the above objectives, this application provides an in-vehicle projection control system, the in-vehicle projection control system comprising: The vehicle-mounted host, the input terminal of which is connected to an external device; A laser source control module, wherein the input terminal of the laser source control module is connected to the output terminal of the vehicle-mounted host; A head-up display (HUD) module is disposed at a first relative position to the laser source control module and connected to the vehicle host. The HUD module is used to implement the HUD function based on the first output information of the vehicle host when the laser source control module is in a first fixed position. The first relative position is the position of the projection lens at the first fixed position. The user projection function module is located at a second relative position of the laser source control module and is connected to the vehicle host. The user projection function module is used to implement the user projection function based on the second output information of the external device when the laser source control module is in the second fixed position. The second relative position is the projection lens position of the second fixed position.

[0006] In one embodiment, the head-up display function module includes: A head-up display lens assembly is disposed at a first relative position to the laser source control module and is connected to the vehicle-mounted host.

[0007] In one embodiment, the vehicle-mounted host includes: A differential signal digital transmission interface is provided, which is connected to the laser source control module. An external connection interface is provided, which is connected to the external device. The external connection interface includes at least one of a high-definition multimedia interface, a universal serial bus interface, and a high-performance digital audio / video interface.

[0008] In one embodiment, the laser source control module includes: A laser source, which serves as the input terminal of the laser source control module and is connected to the output terminal of the vehicle-mounted host; A light source electric slide rail is provided, on which the laser light source is slidably mounted. The control end of the light source electric slide rail is connected to an external button. The light source electric slide rail is configured to slide the laser light source to a first fixed position or a second fixed position based on the command of the external button.

[0009] In one embodiment, the user projection function module includes: The user projection lens group is disposed at a second relative position of the laser source control module and is connected to the vehicle host. An in-vehicle projection control unit is disposed in the user projection area of ​​the windshield of a vehicle, the user projection area including the projection area corresponding to the user projection lens group.

[0010] In one embodiment, the vehicle-mounted projection control unit includes: Projection screen; A screen hinge is provided at the top of the user projection area, and the projection screen is wound around the screen hinge. A hinge controller is provided, the output of which is connected to the control terminal of the screen hinge, and the input of which is connected to an external level. The hinge controller is configured to rotate the screen hinge to open or retract the projection screen.

[0011] In one embodiment, the user projection function module further includes: The first transistor has its first end connected to the control terminal of the electric slide rail in the laser source control module, and its second end connected to the power supply. The second transistor has its first end connected to the output terminal of the vehicle host and its second end connected to the power supply. An AND gate device is provided, wherein the first input terminal of the AND gate device is connected to the third terminal of the first transistor, the second input terminal of the AND gate device is connected to the third terminal of the second transistor, and the output terminal of the AND gate device is connected to the input terminal of the shaft controller.

[0012] In one embodiment, the user projection function module further includes: A selector is provided, wherein the first end of the selector is connected to the input end of the shaft controller, the second end of the selector is connected to the output end of the AND gate device and the external level switch, and the third end of the selector is connected to the third end of the second transistor.

[0013] In one embodiment, the first relative position includes the driver's seat of the vehicle dashboard, the first fixed position includes the projection light source position corresponding to the driver's seat, the second relative position includes the middle position of the vehicle dashboard, and the second fixed position includes the projection light source position corresponding to the middle position.

[0014] In addition, to achieve the above objectives, this application also provides a vehicle that includes the aforementioned vehicle projection control system.

[0015] This application provides an in-vehicle projection control system, which includes an in-vehicle host computer whose input is connected to an external device; a laser source control module whose input is connected to the output of the in-vehicle host computer; a head-up display (HUD) module, which is positioned at a first relative position to the laser source control module and connected to the in-vehicle host computer. The HUD module is used to implement a head-up display function based on first output information from the in-vehicle host computer when the laser source control module is in a first fixed position, wherein the first relative position is the position of the projection lens at the first fixed position; and a user projection module, which is positioned at a second relative position to the laser source control module and connected to the in-vehicle host computer. The projection function module is used to realize the user projection function based on the second output information of the external device when the laser light source control module is in the second fixed position. The second relative position is the projection lens position of the second fixed position. This vehicle projection control system can not only realize the head-up display function based on the first output information of the vehicle host when the laser light source control module is in the first fixed position, but also realize the user projection function based on the second output information of the external device when the laser light source control module is in the second fixed position. This can solve the problem that the projection device can only realize the projection of the rear seats. That is, by reusing the relevant components in the head-up display function module, the head-up display function module or user projection function can be realized based on the movement of the light source, thereby improving the functionality of vehicle projection. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the framework of the first embodiment of the vehicle-mounted projection control system of this application; Figure 2 This is a schematic diagram of a function display in the second embodiment of the vehicle projection control system of this application; Figure 3 This is a schematic diagram of an interface connection in the second embodiment of the vehicle-mounted projection control system of this application; Figure 4 This is a schematic diagram of the light source moving structure in the second embodiment of the vehicle-mounted projection control system of this application; Figure 5 This is a schematic diagram of a function display in the third embodiment of the vehicle projection control system of this application; Figure 6 This is a schematic diagram of a design position in the third embodiment of the vehicle-mounted projection control system of this application; Figure 7 This is a schematic diagram of a circuit connection in the fourth embodiment of the vehicle-mounted projection control system of this application; Figure 8 This is another circuit connection diagram in the fourth embodiment of the vehicle projection control system of this application.

[0017] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings.

[0018] Explanation of icon numbers: 100. Vehicle projection control system; 200. External equipment; 300. Windshield; 10. Vehicle host; 20. Laser light source control module; 30. Head-up display function module; 40. User projection function module; 201. First fixed position; 202. Second fixed position; 301. Head-up display area; 31. Head-up display lens group; 11. Differential signal digital transmission interface; 12. High-definition multimedia interface; 13. Universal serial bus interface; 14. High-performance digital audio and video interface; 21. Laser light source; 22. Light source electric slide rail; 203. External button; 41. User projection lens group; 42. Vehicle projection control unit; 421. Projection screen; 422. Screen hinge; 401. User projection area; 500. Vehicle dashboard; 423. Hinge controller; VCC, power supply; Q1. First transistor; Q2. Second transistor; 43. AND gate device; 600. External level; 44. Selector. Detailed Implementation

[0019] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0020] To better understand the technical solution of this application, a detailed description will be provided below in conjunction with the accompanying drawings and specific implementation methods.

[0021] Currently, there are generally two methods for controlling in-vehicle projection on the market: one is to equip a large-screen in-vehicle unit to function as an in-vehicle tablet. The other method is to add an in-vehicle projector and a rollable projection screen to the rear passenger area. The large-screen solution requires a bracket to be added to the dashboard for the entertainment screen, which often requires truck drivers to look down to view, potentially causing neck pain over time. The problem with rear-seat projection is that light trucks typically have a single-row cab, requiring considerable depth for installation. Furthermore, the entire projector system can only be used for entertainment and viewing, resulting in higher costs.

[0022] Therefore, based on the shortcomings of the above-mentioned vehicle projection control system 100, the vehicle projection control system 100 of this application is proposed. The main solution of the embodiment of this application is that: not only can the head-up display function be realized based on the first output information of the vehicle host 10 when the laser light source 21 control module 20 is in the first fixed position 201, but also the user projection function can be realized based on the second output information of the external device 200 when the laser light source 21 control module 20 is in the second fixed position 202. Thus, the phenomenon that the projection device can only realize the projection in the rear row can be eliminated. That is, by reusing the relevant devices in the head-up display function module 30, the head-up display function module 30 or the user projection function can be realized based on the movement of the light source, so as to improve the functionality of vehicle projection.

[0023] Based on this, this application provides an in-vehicle projection control system 100, referring to... Figure 1 , Figure 1 This is a schematic diagram of the framework of the first embodiment of the vehicle projection control system 100 of this application.

[0024] Reference Figure 1 This application provides an in-vehicle projection control system 100, which includes: The vehicle-mounted host 10 has its input terminal connected to the external device 200; The laser source 21 control module 20 has its input terminal connected to the output terminal of the vehicle host 10. The head-up display function module 30 is set at a first relative position to the laser source 21 control module 20 and connected to the vehicle host 10 (to realize the control of the lens in the head-up display function module 30). The head-up display function module 30 is used to realize the head-up display function based on the first output information of the vehicle host 10 when the laser source 21 control module 20 is in the first fixed position 201. The first relative position is the position of the projection lens in the first fixed position 201. The user projection function (i.e., the projection function for user entertainment display) module 40 is set at the second relative position of the laser light source 21 control module 20 and connected to the vehicle host 10 (to control the lens in the user projection function module 40). The user projection function module 40 is used to realize the user projection function based on the second output information of the external device 200 when the laser light source 21 control module 20 is in the second fixed position 202. The second relative position is the position of the projection lens in the second fixed position 202.

[0025] In this embodiment, considering that traditional HUDs (Head-Up Displays) can only display driving information, and combined with the in-vehicle projection requirements for entertainment in this application, the laser light source 21 required for both HUD and entertainment projection is reused. At the same time, the tri-color laser emitter (i.e., the device that emits the laser light source 21) can continue to be installed below the dashboard, and can be switched between the driver's seat and the center position of the dashboard via an electric slide rail, so as to realize the HUD function for displaying driving information and the projection display function for the user's entertainment needs, respectively. Thus, by reusing the laser light source 21, both functions can be achieved with only one set of hardware, thereby reducing the cost of in-vehicle projection. At the same time, two functions can be implemented based on one set of hardware, thereby expanding the functionality of in-vehicle projection.

[0026] In one embodiment, the vehicle projection control system 100 includes a head-up display (HUD) module 30 and a user projection module 40. In this case, the laser light source 21 in the laser light source 21 control module 20 can be reused between the two modules to achieve entertainment projection and HUD functions respectively. That is, the input terminal of the laser light source 21 control module 20 is connected to the output terminal of the vehicle host 10, thereby receiving information from the vehicle host 10 and realizing two different projection functions. Therefore, the role of the laser light source 21 control module 20 is not only to provide the light source, but also to emit the light source to different modules based on different functions. When a head-up display (HUD) function is required, the laser source 21 control module 20 is positioned at the first fixed position 201, and the HUD function is implemented based on the first output information of the vehicle host 10. The first relative position refers to the projection lens position at the first fixed position 201, i.e., the lens required for the HUD is set at the first relative position, and the laser source 21 is set at the first fixed position 201. When a user projection function is required, the laser source 21 control module 20 is positioned at the second fixed position 202, and the HUD function is implemented based on the second output information of the vehicle host 10. The second relative position refers to the projection lens position at the first fixed position 201, i.e., the lens required for the HUD is set at the first fixed position, and the laser source 21 is set at the first fixed position 201. The projection lens position of the second fixed position 202, that is, the second relative position, is set with the lens required for user projection. The laser light source 21 is set in the second fixed position 202. Of course, the laser light source 21 can also be directly fixed so that different functions can be achieved by moving the two lenses. For example, when the head-up display function is required, the lens for the head-up display function will be moved to the laser emission position of the laser light source 21, and the lens for the user projection function will be moved to the laser emission position of the laser light source 21 to achieve the head-up display function. Similarly, the user projection function can be controlled, which can greatly expand the functionality of the entire vehicle projection.

[0027] For example, the input terminal of the vehicle host 10 is connected to an external device 200 to receive various information from the external device 200 for display. The external device 200 can be a mobile phone, tablet, etc. The first output information can be HUD-related information, such as vehicle speed and RPM, and the second output information can be projected video, images, text, etc. Of course, both output information can come from the external device 200 or the vehicle host 10, which is not limited here. It is worth noting that the first relative position is the first fixed position 201, and the second relative position is the second fixed position 202, both referring to the setting positions between the light source and the lens. Based on the corresponding fixed and relative positions, the light source can pass through the lens to achieve projection. Moreover, the projection position can be the windshield of the vehicle. For example, a head-up display area 301 and a user projection area 401 can be set on the windshield. Then, based on the design of the two areas, the corresponding relative and fixed positions can be set to realize the HUD related information in the head-up display area 301, or the user projection related information in the user projection area 401. Thus, the vehicle projection function of user projection and HUD can be realized based on a set of hardware, thereby improving the functionality of vehicle projection.

[0028] In this embodiment, an in-vehicle projection control system 100 is provided. The in-vehicle projection control system 100 includes an in-vehicle host 10, the input terminal of which is connected to an external device 200; a laser source 21 control module 20, the input terminal of which is connected to the output terminal of the in-vehicle host 10; a head-up display (HUD) function module 30, which is disposed at a first relative position of the laser source 21 control module 20. The HUD function module 30 is used to implement the HUD function based on the first output information of the in-vehicle host 10 when the laser source 21 control module 20 is in a first fixed position 201, wherein the first relative position is the position of the projection lens at the first fixed position 201; and a user projection function module 40, which is disposed at a second relative position of the laser source 21 control module 20. Block 40 is used to realize the user projection function based on the second output information of the external device 200 when the laser light source 21 control module 20 is in the second fixed position 202. The second relative position is the projection lens position of the second fixed position 202. This vehicle projection control system 100 can not only realize the head-up display function based on the first output information of the vehicle host 10 when the laser light source 21 control module 20 is in the first fixed position 201, but also realize the user projection function based on the second output information of the external device 200 when the laser light source 21 control module 20 is in the second fixed position 202. This can solve the problem that the projection device can only realize the projection in the rear seats. That is, by reusing the relevant devices in the head-up display function module 30, the head-up display function module 30 or the user projection function can be realized based on the movement of the light source, thereby improving the functionality of the vehicle projection.

[0029] Furthermore, based on the first embodiment of this application described above, a second embodiment of the vehicle-mounted projection control system 100 of this application is proposed, referring to... Figure 2 , Figure 2 This is a schematic diagram of a function display in the second embodiment of the vehicle projection control system 100 of this application. The head-up display function module 30 includes: The head-up display lens group 31 is positioned at the first relative position to the laser light source 21 control module 20 and is connected to the vehicle host 10.

[0030] For example, a head-up display lens group 31 is set at the projection lens position of the first fixed position 201. If the projection lens position of the first fixed position 201 is the driver's seat, then the laser can be reflected into the user's eyes based on the head-up display lens group 31 (at which time the laser light source 21 control module 20 is in the first fixed position 201), forming a virtual image at a distance, thereby realizing the display of driving information such as vehicle speed, navigation, and intelligent driving function status of the HUD. Of course, it can also be achieved by moving the head-up display lens group 31. However, if the head-up display lens group 31 is moved, there will be two display functions displayed in one area. This method can realize the adaptive adjustment of the display function area to improve the user experience.

[0031] In one embodiment, reference is made to Figure 3 , Figure 3 This is a schematic diagram of an interface connection in a second embodiment of the vehicle-mounted projection control system 100 of this application. The vehicle-mounted host 10 includes: Differential signal digital transmission interface 11 is connected to laser source 21 control module 20; An external connection interface is provided for connection to an external device 200. The external connection interface includes at least one of a high-definition multimedia interface 12, a universal serial bus interface 13, and a high-performance digital audio and video interface 14.

[0032] For example, since external data input is required, an external connection interface can be set on the vehicle-mounted host 10 to connect to the external device 200, thereby obtaining information from the external device 200 for display. The external connection interface may include at least one of a high-definition multimedia interface 12, a universal serial bus interface 13, and a high-performance digital audio / video interface 14, including HDMI (High Definition Multimedia Interface) and DP (DisplayPort, a video interface standard standardized by the Video Electronics Standards Association). DP and HDMI ports are common consumer video interfaces, compatible with mainstream game consoles and computers. Simultaneously, the universal serial bus interface 13 can read audio and video data from external storage devices and connect to mobile devices supporting the universal serial bus interface 13, such as mobile phones and tablets, to achieve large-screen projection. For example, the vehicle host 10 includes a differential signal digital transmission interface 11 connected to the laser light source 21 control module 20, which can transmit various information of the vehicle host 10 to the laser light source 21 control module 20 so as to realize the control of the laser light source 21 control module 20 for projection display. Of course, the relevant information of HUD can also be input by external devices 200, such as map navigation information.

[0033] In one embodiment, reference is made to Figure 4 , Figure 4 This is a schematic diagram of the light source movement structure in the second embodiment of the vehicle-mounted projection control system 100 of this application. The laser light source 21 control module 20 includes: Laser source 21 serves as the input terminal of laser source 21 control module 20 and is connected to the output terminal of vehicle host 10. The light source electric slide rail 22 has a laser light source 21 slidably mounted on it. The control end of the light source electric slide rail 22 is connected to an external button 203. The light source electric slide rail 22 is configured to slide the laser light source 21 to a first fixed position 201 or a second fixed position 202 based on the command of the external button 203.

[0034] Furthermore, the first relative position includes the driver's seat of the vehicle dashboard 500, the first fixed position 201 includes the projection light source position corresponding to the driver's seat, the second relative position includes the middle position of the vehicle dashboard 500, and the second fixed position 202 includes the projection light source position corresponding to the middle position.

[0035] In this embodiment, the laser source 21 control module 20 includes a laser source 21 and a light source motorized slide rail 22. The laser source 21 can serve as a light source for either the HUD function or the user projection function. The lenses for both the HUD and user projection functions can be fixed, and the laser source 21 can be moved via the light source motorized slide rail 22 to achieve either the HUD or user projection function. The light source motorized slide rail 22 is configured to slide the laser source 21 to a first fixed position 201 or a second fixed position 202 based on an external button 203. For example, pressing the external button 203 outputs a high level to the light source motorized slide rail 22, thus sliding the laser source 21 to the first fixed position 201. Not pressing the external button 203 outputs a low level to the light source motorized slide rail 22, thus sliding the laser source 21 to the second fixed position 202. Other control logic can also be used, which will not be described in detail here. For example, the first relative position includes the driver's seat of the vehicle dashboard 500, the first fixed position 201 includes the projection light source position corresponding to the driver's seat, the second relative position includes the middle position of the vehicle dashboard 500, and the second fixed position 202 includes the projection light source position corresponding to the middle position. Of course, the positions can also be adaptively set according to actual conditions, which is not limited here. This design of the laser light source 21 control module 20 can achieve a brand-new functional design that organically combines driving information display and cabin entertainment functions. By using the light source electric slide rail 22 and standardized light source, the hardware reuse of the two functions of HUD and rear entertainment projection is realized, thereby reducing the cost of implementing the two functions and improving the functionality of the vehicle projection.

[0036] In one embodiment, based on the first and / or second embodiments of this application described above, a third embodiment of the vehicle projection control system 100 of this application is proposed, referring to... Figure 5 , Figure 5 This is a schematic diagram of a function display in the third embodiment of the vehicle projection control system 100 of this application. The user projection function module 40 includes: User projection lens group 41 is set at the second relative position of laser light source 21 control module 20 and is connected to vehicle host 10. The vehicle projection control unit 42 is located in the user projection area 401 of the windshield 300 of the vehicle. The user projection area 401 includes the projection area corresponding to the user projection lens group 41.

[0037] Furthermore, the vehicle-mounted projection control unit 42 includes: Projection screen 421; Screen hinge 422 is located at the top of the user projection area 401, and projection screen 421 is rolled around the screen hinge 422. The output of the pivot controller 423 is connected to the control terminal of the screen pivot 422, and the input terminal of the pivot controller 423 is connected to the external level controller 600 (a device that can control the output high and low levels based on buttons or other methods). The pivot controller 423 is set to rotate the screen pivot 422 to open or retract the projection screen 421.

[0038] In this embodiment, the user projection function module 40 includes a user projection lens group 41 and an in-vehicle projection control unit 42. Since the HUD can project directly onto the glass, while user projection requires a screen display, the in-vehicle projection control unit 42 needs to include a projection screen 421, a screen hinge 422, and a hinge controller 423. The hinge controller 423 then rotates the screen hinge 422 to open or retract the projection screen 421. The internal control principle can be the same as existing screen opening and retraction methods, and is not limited here. For example, assuming the entire in-vehicle projection control system 100 is installed on a truck, since the truck's windshield is nearly perpendicular to the ground, the size of the projection screen 421 can be roughly the same as the windshield. Based on light truck models, the projection display area is approximately 74 inches, more than ten times the display area of ​​a vehicle-mounted system. A user projection lens group 41 is positioned in the center of the dashboard, and a rollable projection screen 421 is added above the windshield. The laser light source 21 projects onto the projection screen 421 after passing through the user projection lens group 41, and the light is diffused into the user's eyes to achieve the entertainment projection function. The vehicle host 10 is connected to the laser light source 21, and can also communicate with the user projection lens group 41 and the head-up display lens group 31. By controlling the image chips within the user projection lens group 41 and the head-up display lens group 31, the host 10 can control the HUD and the projected display content to expand the functionality of the vehicle projection.

[0039] In one embodiment, reference may be made to Figure 6 , Figure 6 This is a schematic diagram of a design position in the third embodiment of the vehicle-mounted projection control system 100 of this application. The vehicle-mounted projection control system 100 consists of two lens groups (a user projection lens group 41 and a head-up display lens group 31), a three-color laser light source 21, a light source electric slide rail 22, a projection screen 421, and a vehicle-mounted host 10. The vehicle-mounted host 10 serves as the control host in this system, enabling the switching of light source positions and control of video stream output content. The laser light source 21 and lens groups function similarly to a display screen. A soft switch on the light source electric slide rail 22 can switch the laser light source 21 to two fixed positions on the slide rail. When in the first fixed position 201, the system is in HUD function mode, allowing free adjustment of the size and layout of elements on the HUD display interface via the vehicle-mounted terminal. When in the second fixed position 202, the system is in user projection function mode, allowing display of video, audio, and other information on the user projection display interface via the vehicle-mounted terminal. Thus, the vehicle-mounted projection control system 100 realizes both HUD and user projection functions, expanding the functionality of the vehicle-mounted projection control system.

[0040] Based on the first, second, and / or third embodiments of the vehicle projection control system 100 described above, a fourth embodiment of the vehicle projection control system 100 of this application is proposed, referring to... Figure 7 , Figure 7 This is a circuit connection diagram of the fourth embodiment of the vehicle-mounted projection control system 100 of this application. The user projection function module 40 also includes: The first transistor Q1 has its first end connected to the control terminal of the electric slide rail 22 of the laser light source 21 control module 20, and its second end connected to the power supply VCC. The second transistor Q2 has its first end connected to the output terminal of the vehicle host 10, and its second end connected to the power supply VCC. AND gate 43 has its first input terminal connected to the third terminal of the first transistor Q1, its second input terminal connected to the third terminal of the second transistor Q2, and its output terminal connected to the input terminal of the shaft controller 423.

[0041] In this embodiment, to ensure the accuracy of user projection, appropriate circuitry can be used to guarantee control accuracy. Specifically, the user projection function module 40 includes a first transistor Q1, a second transistor Q2, and an AND gate 43. When both the first transistor Q1 and the second transistor Q2 are turned on, the AND gate 43 outputs a fixed level to achieve the user projection function. Because the first terminal of the first transistor Q1 is connected to the control terminal of the light source motorized slide rail 22 in the laser light source 21 control module 20, and the first terminal of the second transistor Q2 is connected to the output terminal of the vehicle-mounted host 10, it is possible to achieve the same level output from both the output terminal of the vehicle-mounted host 10 and the control terminal of the light source motorized slide rail 22, thus controlling the pivot controller 423 to open the projection screen 421. If the control terminal of the electric slide rail 22 is predefined to be high, the laser light source 21 will be moved to the second fixed position 202. When the output terminal of the vehicle host 10 is high, the vehicle speed is 0 and the handbrake is engaged. The AND gate device 43 will then output a high level. Based on the high level output of the AND gate device 43, the projection screen 421 will automatically lower, allowing playback of local / network video sources built into the vehicle's system. External video sources can also be imported and played through the video signal input port. If the laser light source 21 is mistakenly moved to the second fixed position 202, but the vehicle speed is not 0, the output terminal of the vehicle host 10 will be low, controlling the AND gate device 43 to output a low level, thus preventing the projection screen 421 from lowering. This significantly improves driving safety. Alternatively, if the vehicle is stopped but the user does not require projection, the projection screen 421 will not be lowered, further enhancing the intelligence and driving safety of the entire vehicle projection control system.

[0042] In one embodiment, reference is made to Figure 8 , Figure 8 This is another circuit connection diagram in the fourth embodiment of the vehicle-mounted projection control system 100 of this application. The user projection function module 40 also includes: The selector 44 has its first terminal connected to the input terminal of the shaft controller 423, its second terminal connected to the output terminal of the AND gate device 43 and the external level device 600, and its third terminal connected to the third terminal of the second transistor Q2.

[0043] In this embodiment, the user projection function module 40 further includes a selector 44. The first terminal of the selector 44 is connected to the input terminal of the shaft controller 423, the second terminal of the selector 44 is connected to the output terminal of the AND gate device 43 and the external level sensor 600, and the third terminal of the selector 44 is connected to the third terminal of the second transistor Q2. In this case, the third terminal of the selector 44 can be designed as a control terminal; the control signal of the external level sensor 600 will only take effect when a high level is input to the third terminal of the selector 44. If the vehicle speed is 0 and the handbrake is engaged, the second transistor Q2 is turned on, and its third terminal outputs a high level. This controls the input of the pivot controller 423 and the external level switch 600, allowing the external level switch 600 to output a high level and control the projection screen 421 to lower. Conversely, if the vehicle speed is not 0 or the handbrake is not engaged, the second transistor Q2 is turned off, and its third terminal outputs a low level. The signal from the external level switch 600 cannot be output to the input of the pivot controller 423, and therefore, regardless of whether the external level switch 600 outputs a high or low level, it cannot control the projection screen 421. This dual safety setting ensures the control safety of the vehicle projection control system 100. It also prevents the laser light source 21 from being moved directly when using the HUD function, thus avoiding disruption to the normal operation of the HUD function.

[0044] Based on the above embodiments of the vehicle projection control system 100, a vehicle is proposed, the vehicle including the above vehicle projection control system 100.

[0045] In this embodiment, the vehicle, through the in-vehicle projection control system 100, can not only achieve a head-up display function based on the first output information of the in-vehicle host 10 when the laser light source 21 control module 20 is in the first fixed position 201, but also achieve a user projection function based on the second output information of the external device 200 when the laser light source 21 control module 20 is in the second fixed position 202. This overcomes the limitation of projection devices only allowing rear-seat viewing, by reusing related components in the head-up display module 30 to achieve either the head-up display module 30 or the user projection function based on the movement of the light source, thus improving the functionality of the in-vehicle projection. It is worth noting that the in-vehicle projection control system 100 can also intelligently activate the projection based on the actual situation of the vehicle, ensuring driving safety and a smart user experience. It is also worth noting that the vehicle can be a truck or other types of vehicles, which are not limited here.

[0046] The above are only some embodiments of this application and do not limit the patent scope of this application. All equivalent structural transformations made under the technical concept of this application and using the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included in the patent protection scope of this application.

Claims

1. A vehicle-mounted projection control system, characterized in that, The vehicle-mounted projection control system includes: The vehicle-mounted host, the input terminal of which is connected to an external device; A laser source control module, wherein the input terminal of the laser source control module is connected to the output terminal of the vehicle-mounted host; A head-up display (HUD) module is disposed at a first relative position to the laser source control module and connected to the vehicle host. The HUD module is used to implement the HUD function based on the first output information of the vehicle host when the laser source control module is in a first fixed position. The first relative position is the position of the projection lens at the first fixed position. The user projection function module is located at a second relative position of the laser source control module and is connected to the vehicle host. The user projection function module is used to implement the user projection function based on the second output information of the external device when the laser source control module is in the second fixed position. The second relative position is the projection lens position of the second fixed position.

2. The vehicle-mounted projection control system as described in claim 1, characterized in that, The head-up display function module includes: A head-up display lens assembly is disposed at a first relative position to the laser source control module and is connected to the vehicle-mounted host.

3. The vehicle-mounted projection control system as described in claim 1, characterized in that, The vehicle-mounted host includes: A differential signal digital transmission interface is provided, which is connected to the laser source control module. An external connection interface is provided, which is connected to the external device. The external connection interface includes at least one of a high-definition multimedia interface, a universal serial bus interface, and a high-performance digital audio / video interface.

4. The vehicle-mounted projection control system as described in claim 1, characterized in that, The laser source control module includes: A laser source, which serves as the input terminal of the laser source control module and is connected to the output terminal of the vehicle-mounted host; A light source electric slide rail is provided, on which the laser light source is slidably mounted. The control end of the light source electric slide rail is connected to an external button. The light source electric slide rail is configured to slide the laser light source to a first fixed position or a second fixed position based on the command of the external button.

5. The vehicle-mounted projection control system as described in claim 1, characterized in that, The user projection function module includes: The user projection lens group is disposed at a second relative position of the laser source control module and is connected to the vehicle host. An in-vehicle projection control unit is disposed in the user projection area of ​​the windshield of a vehicle, the user projection area including the projection area corresponding to the user projection lens group.

6. The vehicle-mounted projection control system as described in claim 5, characterized in that, The vehicle-mounted projection control unit includes: Projection screen; A screen hinge is provided at the top of the user projection area, and the projection screen is wound around the screen hinge. A hinge controller is provided, the output of which is connected to the control terminal of the screen hinge, and the input of which is connected to an external level. The hinge controller is configured to rotate the screen hinge to open or retract the projection screen.

7. The vehicle-mounted projection control system as described in claim 6, characterized in that, The user projection function module also includes: The first transistor has its first end connected to the control terminal of the electric slide rail in the laser source control module, and its second end connected to the power supply. The second transistor has its first end connected to the output terminal of the vehicle host and its second end connected to the power supply. An AND gate device is provided, wherein the first input terminal of the AND gate device is connected to the third terminal of the first transistor, the second input terminal of the AND gate device is connected to the third terminal of the second transistor, and the output terminal of the AND gate device is connected to the input terminal of the shaft controller.

8. The vehicle-mounted projection control system as described in claim 7, characterized in that, The user projection function module also includes: A selector is provided, wherein the first end of the selector is connected to the input end of the shaft controller, the second end of the selector is connected to the output end of the AND gate device and the external level switch, and the third end of the selector is connected to the third end of the second transistor.

9. The vehicle-mounted projection control system as described in any one of claims 1 to 8, characterized in that, The first relative position includes the driver's seat of the vehicle dashboard, the first fixed position includes the position of the projection light source corresponding to the driver's seat, the second relative position includes the middle position of the vehicle dashboard, and the second fixed position includes the position of the projection light source corresponding to the middle position.

10. A vehicle, characterized in that, The vehicle includes the vehicle projection control system as described in any one of claims 1 to 9.

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