HUD for aerial imaging

Abstract

The utility model discloses an HUD for aerial imaging, and the HUD comprises a light-shielding housing, and an accommodation cavity is formed in the light-shielding housing. The light source emitting module is arranged at the bottom of the containing cavity and used for being connected with a vehicle-mounted control module to project display information; the negative refractive index plate is arranged in the middle of the accommodating cavity and is in running fit with the light shielding shell; and the virtual image is positioned on the outer side of the light-shielding shell, and the projection information of the light source emitting module is projected to the outside of the light-shielding shell to be imaged under the refraction action of the negative refractive index plate. According to the HUD for aerial imaging provided by the utility model, aerial projection is carried out on display content through the negative refractive index plate, and aerial projection is adopted, so that compared with a traditional vehicle-mounted HUD, the HUD does not need to depend on a corresponding display glass plate on a windshield, and can be matched with the arrangement of an adjusting element; and the angle of the negative refractive index plate is adjusted according to individual requirements of different drivers, so that virtual imaging height and angle adjustment can be controlled synchronously.

Description

Technical Field

[0001] The utility model relates to the technical field of HUD, in particular to a HUD with aerial imaging. Background Art

[0002] The head-up display, abbreviated as HUD, also known as the head-up display system, refers to a multifunctional instrument panel centered on the vehicle driver for blind operation. Its function is to project important driving information such as speed and navigation onto the windshield in front of the driver, enabling the driver to view important driving information such as speed and navigation without having to lower or turn their head as much as possible.

[0003] Currently, most in-vehicle head-up displays directly project onto the front windshield, and a corresponding interlayer is provided at the projected position on the windshield for displaying the projected content. However, it has been found in actual applications that the projected position of the above traditional HUD depends on the windshield for display, and since the windshield is fixedly installed, its projected position cannot be adjusted according to actual application requirements, which does not meet the personalized needs of drivers. Therefore, a HUD with aerial imaging is proposed. Summary of the Utility Model

[0004] Based on this, in order to solve the above technical problems, it is necessary to provide a HUD with aerial imaging, which projects the display content in the air through a negative refractive index plate. Since aerial projection technology is used, it needs to be projected at a fixed position to meet the personalized adjustment needs of different drivers.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A HUD with aerial imaging, comprising:

[0007] A light-shielding housing, within which an accommodation cavity is formed;

[0008] A light source emission module, which is provided at the bottom of the accommodation cavity for connecting with the vehicle-mounted control module to project display information;

[0009] A negative refractive index plate, which is provided in the middle of the accommodation cavity and is rotationally matched with the light-shielding housing;

[0010] Virtual imaging, which is located outside the light-shielding housing, and the projection information of the light source emission module is projected outside the light-shielding housing to form an image under the refraction of the negative refractive index plate;

[0011] An installation cavity, which is provided in the side wall of the light-shielding housing for installing adjustment elements;

[0012] The adjusting element includes an angle adjusting part, a tensioning part and a height adjusting part. The adjusting element is connected to the negative refractive index plate through the angle adjusting part;

[0013] Among them, the position of the negative refractive index plate can be adjusted through the angle adjusting part and the height adjusting part to change the position of the virtual imaging.

[0014] Further, the angle adjusting part includes a first pulley, a second pulley and a third pulley. The first pulley, the second pulley and the third pulley are distributed in a triangular shape inside the installation cavity;

[0015] And a transmission belt is sleeved on the surfaces of the first pulley, the second pulley and the third pulley together.

[0016] Further, the angle adjusting part also includes support plates respectively rotatably arranged on one side surface of the first pulley, the second pulley and the third pulley;

[0017] Among them, the support plate on the first pulley is fixed on the inner wall of the installation cavity;

[0018] The support plates on the second pulley and the third pulley are both slidably assembled with the inner wall of the installation cavity.

[0019] Further, the angle adjusting part also includes an adjusting knob fixed on the surface of the first pulley. A groove is formed at the edge of the top of the light-shielding housing for part of the adjusting knob to be exposed.

[0020] Further, the tensioning part includes an I-shaped seat fixed on the surface of the support plate connected to the third pulley. One side of the I-shaped seat is connected with a tensioning spring fixed to the inner wall of the installation cavity.

[0021] Further, the height adjusting part includes an L-shaped seat fixed on the surface of the support plate connected to the second pulley. An adjusting screw rod is threadedly penetrated through the surface of the L-shaped seat.

[0022] Further, one end of the adjusting screw rod penetrates through the outside of the light-shielding housing and is fixed with an adjusting knob, and the other end is movably assembled with the inner wall of the installation cavity through a shaft seat;

[0023] And one side of the L-shaped seat is slidably matched with the inner wall of the installation cavity.

[0024] Further, the negative refractive index plate includes a negative refractive index plate body and a frame surrounding the outside of the negative refractive index plate body;

[0025] Among them, one side of the frame extends towards the inside of the installation cavity and is coaxially fixed with the second pulley, and the other side is movably assembled with a side seat through a bearing, and the side seat is movably assembled with the side wall of the accommodating cavity.

[0026] Further, a rubber contact convex ball is fixed on one side of the frame, and one side of the rubber contact convex ball is in contact with the side wall of the accommodation cavity, so that the negative refractive index plate remains stationary in its natural state.

[0027] Further, a transparent glass protection cover plate is embedded in the top of the accommodation cavity.

[0028] Compared with the prior art, the utility model has the following beneficial effects:

[0029] The HUD for aerial imaging provided by the utility model projects the display content into the air through a negative refractive index plate. Since aerial projection is adopted, it does not need to rely on the corresponding display glass plate on the windshield compared with the traditional vehicle-mounted HUD. Therefore, with the setting of the adjustment element, the angle of the negative refractive index plate can be adjusted according to the personalized needs of different drivers, and then the adjustment of the height and angle of the controlled virtual imaging is synchronously realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic structural diagram of a HUD for aerial imaging provided by the utility model;

[0031] Figure 2 is an internal structural diagram of a HUD for aerial imaging provided by the utility model;

[0032] Figure 3 is a sectional structural diagram of a HUD for aerial imaging provided by the utility model;

[0033] Figure 4 is a schematic structural diagram of an adjustment element of a HUD for aerial imaging provided by the utility model;

[0034] Figure 5 is a top view structural diagram of an adjustment element of a HUD for aerial imaging provided by the utility model;

[0035] Figure 6 is a top view structural diagram of a HUD for aerial imaging provided by the utility model.

[0036] The reference signs in the drawings are explained as follows:

[0037] Light-shielding housing 1, accommodation cavity 11, installation cavity 12, groove 13, transparent glass protection cover plate 14;

[0038] Light source emission module 2;

[0039] Negative refractive index plate 3, negative refractive index plate body 31, frame 32, rubber contact convex ball 33, virtual imaging 34;

[0040] Adjustment element 4, angle adjustment part 41, tensioning part 42, height adjustment part 43;

[0041] Pulley 1 410, Pulley 2 411, Pulley 3 412, Support Plate 413, Adjusting Knob 414, Drive Belt 415;

[0042] I-shaped Seat 420, Tension Spring 421;

[0043] L-shaped Seat 430, Adjusting Screw Rod 431. Detailed Implementation Manner

[0044] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0045] As described in the background art, most current in-vehicle head-up displays directly project onto the front windshield, and a corresponding interlayer for displaying the projected content is provided at the corresponding projection position on the windshield. However, it is found in the actual application process of the above traditional HUD that since the projection position depends on the windshield for display, it cannot adjust the projection position according to actual application requirements.

[0046] To solve this technical problem, the present utility model provides an HUD with aerial imaging, which is applied to in-vehicle HUD.

[0047] Specifically, please refer to Figures 1-6 , an HUD with aerial imaging specifically includes:

[0048] Light-shielding Housing 1, and a receiving cavity 11 is formed inside the light-shielding housing;

[0049] Light Source Emission Module 2, which is arranged at the bottom of the receiving cavity 11 and is used to connect with the vehicle-mounted control module for projecting display information;

[0050] Negative Refractive Index Plate 3, which is arranged in the middle of the receiving cavity 11 and is rotationally matched with the light-shielding housing 1;

[0051] Virtual Imaging 34, which is located outside the light-shielding housing 1, and the projection information of the light source emission module 2 is projected outside the light-shielding housing 1 for imaging under the refraction action of the negative refractive index plate 3;

[0052] Installation Cavity 12, which is arranged inside the side wall of the light-shielding housing 1 for installing the adjusting element 4;

[0053] The adjusting element 4 includes an angle adjusting part 41, a tensioning part 42 and a height adjusting part 43. The adjusting element 4 is connected to the negative refractive index plate 3 through the angle adjusting part 41;

[0054] Wherein, the position adjustment of the negative refractive index plate 3 can be formed through the angle adjusting part 41 and the height adjusting part 43 to change the position of the virtual imaging 34.

[0055] The HUD for aerial imaging provided by the present utility model projects the display content into the air through the negative refractive index plate 3. Since aerial projection is adopted, it does not need to rely on the corresponding display glass plate on the windshield compared with the traditional vehicle-mounted HUD. Therefore, it can cooperate with the setting of the adjusting element 4 to adjust the angle of the negative refractive index plate 3 according to the personalized needs of different drivers, and then synchronously realize the adjustment of the height and angle of the control virtual imaging 34.

[0056] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings.

[0057] It should be noted that, without conflict, the embodiments in the present utility model and the features and technical solutions in the embodiments can be combined with each other.

[0058] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0059] Please refer to Figures 1-6 , a HUD for aerial imaging, a light-shielding housing 1, and an accommodation cavity 11 is formed inside the light-shielding housing; a light source emission module 2, which is arranged at the bottom of the accommodation cavity 11 for connecting with a vehicle-mounted control module to project display information; a negative refractive index plate 3, which is arranged in the middle of the accommodation cavity 11 and is rotationally matched with the light-shielding housing 1;

[0060] A virtual imaging 34, which is located outside the light-shielding housing 1, and the projection information of the light source emission module 2 is projected outside the light-shielding housing 1 to form an image under the refraction action of the negative refractive index plate 3. An installation cavity 12 is arranged inside the side wall of the light-shielding housing 1 for installing the adjusting element 4;

[0061] The adjusting element 4 includes an angle adjusting part 41, a tensioning part 42 and a height adjusting part 43. The adjusting element 4 is connected to the negative refractive index plate 3 through the angle adjusting part 41. Wherein, the position adjustment of the negative refractive index plate 3 can be formed through the angle adjusting part 41 and the height adjusting part 43 to change the position of the virtual imaging 34;

[0062] The angle adjustment part 41 includes a first pulley 410, a second pulley 411 and a third pulley 412, and the first pulley 410, the second pulley 411 and the third pulley 412 are distributed in a triangular shape inside the installation cavity 12;

[0063] And a transmission belt 415 is sleeved on the surfaces of the first pulley 410, the second pulley 411 and the third pulley 412 together. Anti-slip layers or anti-slip convex patterns can be provided on the opposite sides of the first pulley 410, the second pulley 411, the third pulley 412 and the transmission belt 415 to ensure the stability of their relative transmission;

[0064] The angle adjustment part 41 further includes support plates 413 respectively rotatably arranged on one side surface of the first pulley 410, the second pulley 411 and the third pulley 412. Among them, the support plate 413 on the first pulley 410 is fixed on the inner wall of the installation cavity 12;

[0065] The support plates 413 on the second pulley 411 and the third pulley 412 are both slidably assembled with the inner wall of the installation cavity 12. As Figure 4 described, the support plate 413 on the second pulley 411 can slide along the height direction of the light-shielding housing 1, and the support plate 413 on the third pulley 412 can slide along the length direction of the light-shielding housing 1;

[0066] The angle adjustment part 41 further includes an adjustment knob 414 fixed on the surface of the first pulley 410. A groove 13 is formed at the edge of the top of the light-shielding housing 1 for part of the adjustment knob 414 to be exposed;

[0067] The negative refractive index plate 3 includes a negative refractive index plate body 31 and a frame 32 surrounding the outside of the negative refractive index plate body 31. Among them, one side of the frame 32 extends towards the inside of the installation cavity 12 and is coaxially fixed with the second pulley 411, and the other side is movably assembled with a side seat 35 through a bearing. The side seat 35 is movably assembled with the side wall of the accommodation cavity 11, and a strip-shaped groove for the negative refractive index plate 3 to slide up and down is opened on the side wall of the light-shielding housing 1;

[0068] The negative refractive index plate 3 has abnormal physical properties such as negative group velocity, negative refraction effect, inverse Doppler effect, ideal imaging, etc. The so-called negative refraction is opposite to the conventional refraction. The incident wave and the refracted wave are on the same side of the direction of the interface normal. In addition, the waves diverging from all point light sources passing through the negative refractive index plate 3 will converge to a certain point in the flat medium, and the phase will not be partially lost, thus achieving ideal imaging. That is to say, after the required display light passes through the negative refractive index plate 3, the negative refractive index can make the light refract in the opposite direction and converge in the air, achieving the purpose of imaging in the air;

[0069] The light source emission module 2 is electrically connected to the control in the vehicle during actual application, and is used to emit information light rays of the projection information required by the vehicle through the light source emission module 2 and project them onto the negative refractive index plate 3;

[0070] As Figure 3 , Figure 4 and Figure 5 shown, after the light source generating module 2 projects the content to be projected and displayed onto the negative refractive index plate body 31, the action of the negative refractive index plate body 31 will cause the content to be projected and displayed to be projected on the other side and form an image in the air;

[0071] The included angle and distance between the above-mentioned light source generating module 2 and the negative refractive index plate body 31 are the same as the included angle and distance between the negative refractive index plate body 31 and the virtual image 34 in the air. Therefore, by slightly adjusting the angle or height position of the negative refractive index plate body 31 inside the light-shielding housing 1, the angle and height position of the virtual image 34 in the air will also be adjusted synchronously to meet the personalized usage requirements of different drivers, improving the practicability of the in-vehicle HUD;

[0072] Specifically, the steps for adjusting the position of the virtual image in the air are as follows:

[0073] Angle adjustment:

[0074] Rotate the adjustment knob 414 at the position of the outer groove 13 of the light-shielding housing 1. During the rotation of the adjustment knob 414, the first pulley 410 will be driven to rotate synchronously. The first pulley 410 will drive the second pulley 411 and the third pulley 412 to rotate through the transmission belt 415. Since the negative refractive index plate body 31 on the negative refractive index plate 3 is transmission-assembled with the second pulley 411, the second pulley 411 in the rotating state will drive the negative refractive index plate body 31 to rotate synchronously to adjust the angle of the negative refractive index plate body 31. Due to the change in the included angle between the negative refractive index plate body 31 and the light source generating module 2 after adjustment, the included angle between the control virtual image 34 and the negative refractive index plate body 31 will also be changed synchronously to meet the driver's requirement for adjusting the angle of the control virtual image 34.

[0075] Further optimize the HUD with air imaging provided in Embodiment 1. Specifically, as Figure 4 shown, the tensioning part 42 includes an I-shaped seat 420 fixed on the surface of the support plate 413 connected to the third pulley 412. One side of the I-shaped seat 420 is connected with a tension spring 421 fixed to the inner wall of the installation cavity 12;

[0076] The height adjusting part 43 includes an L-shaped seat 430 fixed on the surface of the support plate 413 connected to the second pulley 411. An adjusting screw rod 431 is threadedly penetrated through the surface of the L-shaped seat 430, and one side of the L-shaped seat 430 is slidably matched with the inner wall of the installation cavity 12.

[0077] One end of the adjusting screw rod 431 penetrates through the outside of the light-shielding housing 1 and is fixed with an adjusting knob, and the other end is movably assembled with the inner wall of the installation cavity 12 through a shaft seat. The top of the adjusting screw rod 431 is in a separated state from the light-shielding housing 1. Therefore, the adjusting screw rod 431 will not form a threaded rotation with the light-shielding housing 1;

[0078] When adjusting the height of the aerial virtual imaging 34 in Embodiment 1: Rotate the adjusting knob outside the light-shielding housing 1, so that the connected adjusting screw rod 431 rotates. When the adjusting screw rod 431 rotates, the L-shaped seat 430 on it is in threaded fit with it, so that the L-shaped seat 430 drives the second pulley 411 to adjust in the height direction;

[0079] As Figure 4 shown, for example, when moving and adjusting the second pulley 411 towards the bottom, under the action of the transmission belt 415, the third pulley 412 will be pulled to slide towards the left, which not only satisfies the downward height adjustment of the second pulley 411, but also can form a tension on the third pulley 412 through the tension spring 412 in the stretched state, so that the transmission belt 415 is also in a tensioned state during adjustment, meeting the stable transmission between it and the first pulley 410, the second pulley 411 and the third pulley 412;

[0080] At the same time, when the negative refractive index plate body 31 needs to be adjusted upward, the adjusting screw rod 431 is rotated in the reverse direction, so that the second pulley 411 moves upward. At this time, the third pulley 412 will slide towards the right under the reset action of the tension of the tension spring 421, synchronously forming a tension on the transmission belt 415;

[0081] As Figure 4 described, the tension spring 421 is in a stretched state, and the adjustment range of the height of the negative refractive index plate body 31 will be within the range of the tension of the tension spring 421 on the transmission belt 415.

[0082] For further optimization of the HUD for aerial imaging provided in Embodiment 1 or 2, as Figure 5 shown, a rubber contact convex ball 33 is fixed on one side of the frame 32, and one side of the rubber contact convex ball 33 abuts against the side wall of the accommodation cavity 11, so that the negative refractive index plate 3 remains static in the natural state;

[0083] Under the action of the rubber contact convex ball 33, the relative position of the negative refractive index plate body 31 and the light-shielding housing 1 will be more stable. Therefore, after adjusting the angle and height of the negative refractive index plate body 31 through the adjusting element 4, the negative refractive index plate body 31 can remain relatively stable in the accommodation cavity 11 and is not prone to autonomous deviation.

[0084] As a further optimization of this embodiment: A transparent glass protection cover plate 14 is embedded in the top of the accommodation cavity 11, and through the transparent glass protection cover plate 14, an isolation protection for the interior of the accommodation cavity 11 can be formed at the top of the light-shielding housing 1.

[0085] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection or communication with each other; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0086] Obviously, the above-described embodiments are only part of the embodiments of the present utility model, rather than all embodiments. The drawings show the preferred embodiments of the present utility model, but do not limit the patent scope of the present utility model. The present utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosed content of the present utility model more thorough and comprehensive. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing specific embodiments, or perform equivalent replacements on some of the technical features. Any equivalent structure directly or indirectly using the content of the specification and drawings of the present utility model in other related technical fields is equally within the scope of the patent protection of the present utility model.

Claims

1. An HUD for aerial imaging, characterized in that, It includes: A light-shielding housing (1), with a receiving cavity (11) formed inside the light-shielding housing; A light source emission module (2), which is arranged at the bottom of the receiving cavity (11) and is used to connect with the vehicle-mounted control module for projecting display information; A negative refractive index plate (3), which is arranged in the middle of the receiving cavity (11) and is rotationally matched with the light-shielding housing (1); A virtual imaging (34), which is located outside the light-shielding housing (1), and the projection information of the light source emission module (2) is projected onto the outside of the light-shielding housing (1) for imaging under the refraction action of the negative refractive index plate (3); An installation cavity (12), which is arranged inside the side wall of the light-shielding housing (1) for installing the adjusting element (4); The adjusting element (4) includes an angle adjusting part (41), a tensioning part (42) and a height adjusting part (43), and the adjusting element (4) is connected with the negative refractive index plate (3) through the angle adjusting part (41); Among them, the position of the negative refractive index plate (3) can be adjusted through the angle adjusting part (41) and the height adjusting part (43) to change the position of the virtual imaging (34).

2. The HUD for aerial imaging according to claim 1, characterized in that, The angle adjusting part (41) includes a first pulley (410), a second pulley (411) and a third pulley (412), and the first pulley (410), the second pulley (411) and the third pulley (412) are distributed in a triangular shape inside the installation cavity (12); And a transmission belt (415) is jointly sleeved on the surfaces of the first pulley (410), the second pulley (411) and the third pulley (412).

3. The HUD for aerial imaging according to claim 2, characterized in that, The angle adjusting part (41) further includes support plates (413) respectively rotatably arranged on one side surface of the first pulley (410), the second pulley (411) and the third pulley (412); Among them, the support plate (413) on the first pulley (410) is fixed on the inner wall of the installation cavity (12); The support plates (413) on the second pulley (411) and the third pulley (412) are both slidably assembled with the inner wall of the installation cavity (12).

4. The HUD for aerial imaging according to claim 3, characterized in that, The angle adjusting part (41) further includes an adjusting knob (414) fixed on the surface of the first pulley (410), and a groove (13) is formed at the edge of the top of the light-shielding housing (1) for part of the adjusting knob (414) to be exposed.

5. The HUD for aerial imaging according to claim 3, wherein The tensioning part (42) includes a T-shaped seat (420) fixed on the surface of the support plate (413) connected to the third pulley (412), and a tensioning spring (421) fixed to the inner wall of the installation cavity (12) is connected to one side of the T-shaped seat (420).

6. The HUD for aerial imaging according to claim 3, wherein The height adjusting part (43) includes an L-shaped seat (430) fixed on the surface of the support plate (413) connected to the second pulley (411), and an adjusting screw rod (431) is threadedly penetrated through the surface of the L-shaped seat (430).

7. The HUD for aerial imaging according to claim 6, characterized in that, One end of the adjusting screw rod (431) penetrates through the outside of the light-shielding housing (1) and is fixed with an adjusting knob, and the other end is movably assembled with the inner wall of the installation cavity (12) through a shaft seat; And one side of the L-shaped seat (430) is slidably matched with the inner wall of the installation cavity (12).

8. The HUD for aerial imaging according to claim 1, characterized in that, The negative refractive index plate (3) includes a negative refractive index plate body (31) and a frame (32) surrounding the outer side of the negative refractive index plate body (31); Wherein, one side of the frame (32) extends towards the inside of the installation cavity (12) and is coaxially fixed with the second pulley (411), and the other side is movably assembled with a side seat (35) through a bearing, and the side seat (35) is movably assembled with the side wall of the accommodation cavity (11).

9. The HUD for aerial imaging according to claim 8, characterized in that, One side of the frame (32) is fixed with a rubber contact convex ball (33), and one side of the rubber contact convex ball (33) abuts against the side wall of the accommodation cavity (11), so that the negative refractive index plate (3) remains static in the natural state.

10. The HUD for aerial imaging according to claim 1, characterized in that, A transparent glass protection cover plate (14) is embedded in the top of the accommodation cavity (11).

Images