A head-up display device for rail transportation

Abstract

The application provides a head-up display device for rail transit, comprising: a bottom plate assembly formed with a first light outlet; a light source assembly for emitting incident light; a first mirror assembly arranged on the light outlet path of the incident light, the first mirror assembly receives the incident light and emits reflected light towards the first light outlet; a second mirror assembly arranged on the side of the bottom plate assembly away from the first mirror assembly and on the light outlet path of the reflected light, the second mirror assembly receives the reflected light and emits first diffused light; and a third mirror assembly arranged on the same side of the bottom plate assembly as the second mirror assembly and on the light outlet path of the first diffused light, so that the third mirror assembly receives the first diffused light and forms a projection image. In this way, the second mirror assembly and the third mirror assembly do not need to be arranged on the light outlet path of the light source assembly, avoiding the problem that the head-up display device has a large size in the direction of the light path of the light source.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of head-up display technology, in particular to a head-up display device for rail transit. BACKGROUND

[0002] Head-up display (HUD) refers to a driver-centered, blind operation, multifunctional instrument panel. Its role is to project important driving information such as speed and navigation onto the windshield in front of the driver, so that the driver can see important driving information such as speed and navigation without lowering or turning his head, and his line of sight does not need to leave the driving front, thereby improving driving safety.

[0003] In the prior art, the head-up display device generally adopts a mode of emitting light from a point light source to a diffusion sheet, then forming diffused light, and finally forming an image through the diffused light passing through a polarizing sheet. This mode requires that the diffusion sheet and the polarizing sheet are both arranged on the light path of the point light source, thereby resulting in a large size of the head-up display device in the direction of the light path of the point light source. SUMMARY

[0004] The present application mainly provides a head-up display device for rail transit, which can avoid the problem of large size of the head-up display device in the direction of the light path of the light source.

[0005] To solve the above technical problems, one technical solution adopted by the present application is to provide a head-up display device for rail transit, which comprises: a bottom plate assembly; a first light outlet is formed; a light source assembly connected with the bottom plate assembly and used for emitting incident light; a first mirror assembly arranged on the same side of the bottom plate assembly as the light source assembly and arranged on the light path of the incident light, so that the first mirror assembly receives the incident light and emits reflected light toward the first light outlet; a second mirror assembly arranged on the side of the bottom plate assembly away from the first mirror assembly and arranged on the light path of the reflected light, so that the second mirror assembly receives the reflected light and emits first diffused light; and a third mirror assembly arranged on the same side of the bottom plate assembly as the second mirror assembly and arranged on the light path of the first diffused light, so that the third mirror assembly receives the first diffused light and forms a projection image.

[0006] In one specific embodiment, the bottom plate assembly comprises a base and a bottom plate, the base is formed with a first sub-port, the light source assembly is connected with the base, the bottom plate is arranged on the side of the base away from the light source assembly and is formed with a second sub-port, the first sub-port and the second sub-port jointly form the first light outlet, and the second mirror assembly and the third mirror assembly are respectively connected with the bottom plate.

[0007] In an embodiment, the bottom plate is movably arranged relative to the base, such that when the bottom plate moves relative to the base, the light position and / or the light angle of the first diffused light is adjusted.

[0008] In an embodiment, the bottom plate assembly further comprises a handle, the handle being connected to the base and the bottom plate respectively, such that when the handle rotates, the bottom plate moves relative to the base.

[0009] In an embodiment, the handle comprises a handle body and a screw rod body, the handle body being rotatably connected to the base, the screw rod body being fixedly connected to the handle body and penetrating through the bottom plate, such that when the handle body rotates relative to the base, the bottom plate moves along the extension direction of the screw rod body.

[0010] In an embodiment, the first mirror assembly comprises a first mirror support and a first mirror, the first mirror support being arranged on the same side of the bottom plate assembly as the light source assembly and being connected to the bottom plate assembly, the first mirror being mounted on the first mirror support and being arranged on the light path of the incident light.

[0011] In an embodiment, the first mirror is arranged obliquely relative to the light path direction of the incident light.

[0012] In an embodiment, the second mirror assembly comprises a diffusion mechanism and a second mirror mechanism, the diffusion mechanism being arranged on the light path of the reflected light, such that the reflected light passes through the diffusion mechanism and forms a second diffused light, the second mirror mechanism being arranged on the light path of the second diffused light, such that the second mirror mechanism receives the second diffused light and emits the first diffused light.

[0013] In an embodiment, the second mirror mechanism comprises a second mirror support and a second mirror, the second mirror being mounted on the second mirror support and forming a diffusion space with the second mirror support, the diffusion space being in communication with the first light outlet, the diffusion mechanism being arranged in the diffusion space.

[0014] In an embodiment, the third mirror assembly comprises a third mirror mechanism and a polarizing assembly, the third mirror mechanism being arranged on the light path of the first diffused light, such that the third mirror mechanism receives the first diffused light and emits a third diffused light, the polarizing assembly being arranged on the light path of the third diffused light, such that the third diffused light passes through the polarizing assembly and forms the projection image.

[0015] The beneficial effects of the present application are: different from the prior art, the head-up display device provided by the embodiments of the present application comprises: a bottom plate assembly; a first light outlet is formed; a light source assembly is connected with the bottom plate assembly and is used for emitting incident light; a first mirror assembly is arranged on the same side of the bottom plate assembly as the light source assembly and is arranged on the light path of the incident light, so that the first mirror assembly receives the incident light and emits reflected light toward the first light outlet; a second mirror assembly is arranged on the side of the bottom plate assembly away from the first mirror assembly and is arranged on the light path of the reflected light, so that the second mirror assembly receives the reflected light and emits first diffused light; a third mirror assembly is arranged on the same side of the bottom plate assembly as the second mirror assembly and is arranged on the light path of the first diffused light, so that the third mirror assembly receives the first diffused light and forms a projection image. In this way, the second mirror assembly and the third mirror assembly do not need to be arranged on the light path of the light source assembly, avoiding the problem that the size of the head-up display device in the light path direction of the light source is large. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0017] Figure 1 is a schematic diagram of the three-dimensional structure of the head-up display device for rail transit provided by the present application;

[0018] Figure 2 is Figure 1 is a schematic diagram of the exploded structure of the head-up display device in the present application;

[0019] Figure 3 is Figure 2 is a schematic diagram of the three-dimensional structure of the bottom plate assembly in the present application;

[0020] Figure 4 is Figure 3 is a schematic diagram of the exploded structure of the bottom plate assembly in the present application;

[0021] Figure 5 is Figure 1 is a schematic diagram of the light path of the light path device in the present application;

[0022] Figure 6 is Figure 2 is a schematic diagram of the exploded structure of the light source assembly in the present application;

[0023] Figure 7 is Figure 2 exploded structural schematic view of the first mirror assembly in

[0024] Figure 8 is Figure 2 perspective structural schematic view of the second mirror assembly in

[0025] Figure 9 is Figure 8 exploded structural schematic view of the second mirror support in

[0026] Figure 10 is Figure 8 exploded structural schematic view of the diffusion mechanism in

[0027] Figure 11 is Figure 10 schematic view of the diffusion mechanism and the second mirror support in cross section in the F-F direction in

[0028] Figure 12 is Figure 2 perspective structural schematic view of the third mirror mechanism in

[0029] Figure 13 is Figure 4 enlarged schematic view of the M portion in

[0030] Figure 14 is Figure 3 schematic view of the base and the bottom plate in cross section in the N-N direction in

[0031] Figure 15 is Figure 13 perspective structural schematic view of the limiting member in

[0032] Figure 16 is Figure 3 perspective structural schematic view of the handle in DETAILED DESCRIPTION

[0033] The present application will be further described by way of illustration with reference to the accompanying drawings and embodiments. In particular, the following embodiments are provided as illustrative examples only and are not intended to limit the scope of the present application. Similarly, the following embodiments are only some of the embodiments of the present application and all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of the present application.

[0034] The terms "first", "second", "third", etc. are used herein only to describe different instances, and cannot be construed to refer to or imply relative importance or a number of indicated technical features. Thus, features defined with "first", "second", "third" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly and specifically limited. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but can optionally include steps or units not listed, or can optionally include other steps or units inherent to the process, method, product or device.

[0035] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of the application. The appearance of the phrase in various places in the specification is not necessarily all referring to the same embodiment, or to the same alternative embodiment, nor is it necessary that all embodiments include the same feature, structure, or characteristic. It will be explicitly understood by those of ordinary skill in the art that an embodiment described herein can be combined with another embodiment.

[0036] Please refer to Figure 1 and Figure 2 , Figure 1 is a perspective structural schematic diagram of an embodiment of a head-up display device 10 for rail transit provided by the application, Figure 2 is Figure 1 is an exploded structural schematic diagram of the head-up display device 10 in

[0037] Please refer to Figure 3 and Figure 4 , Figure 3 is Figure 2 is a perspective structural schematic diagram of the bottom plate assembly 20 in Figure 4 is Figure 3 is an exploded structural schematic diagram of the bottom plate assembly 20 in

[0038] Specifically, in the embodiment, the bottom plate assembly 20 comprises a base 21 and a bottom plate 22, the base 21 is formed with the first sub-port 1011, the bottom plate 22 is formed with the second sub-port 1012, the first sub-port 1011 and the second sub-port 1012 jointly form the first light outlet 101.

[0039] Please refer to Figure 2 and Figure 5 , Figure 5 is Figure 1 a schematic diagram of the light path of the light path device 30, the light path device 30 comprises a light source assembly 31, a first mirror assembly 32, a second mirror assembly 33 and a third mirror assembly 34.

[0040] The light source assembly 31 is connected with the bottom plate assembly 20 and is used for emitting incident light R1, in the embodiment, the light source assembly 31 is connected with the base 21, and the bottom plate 22 is arranged on the side of the base 21 away from the light source assembly 31.

[0041] Please refer to Figure 6 , Figure 6 is Figure 2 a schematic diagram of the exploded structure of the light source assembly 31, the light source assembly 31 comprises a light source shell 311 and a light source 312, the light source shell 311 is formed with a mounting space 102 and a second light outlet 103 communicating with the mounting space 102, the light source 312 is arranged in the mounting space 102, and the incident light R1 emitted by the light source 312 is emitted from the light source shell 311 through the second light outlet 103.

[0042] Please refer to Figure 2 , Figure 5 and Figure 7 , Figure 7 is Figure 2 a schematic diagram of the exploded structure of the first mirror assembly 32, the first mirror assembly 32 is arranged on the same side of the bottom plate assembly 20 as the light source assembly 31 and is arranged on the light emitting path of the incident light R1, so that the first mirror assembly 32 receives the incident light R1 and emits the reflected light R2 towards the first light outlet 101.

[0043] Specifically, the first mirror assembly 32 comprises a first mirror support 321 and a first mirror 322, the first mirror support 321 is arranged on the same side of the bottom plate assembly 20 as the light source assembly 31 and is connected with the bottom plate assembly 20, in the embodiment, that is, the first mirror support 321 is connected with the base 21, the first mirror 322 is mounted on the first mirror support 321 and is arranged on the light emitting path of the incident light R1, so that the first mirror 322 receives the incident light R1 and emits the reflected light R2.

[0044] The first mirror support 321 comprises a first clamping piece 3211 and a second clamping piece 3212. The first clamping piece 3211 is connected with the base 21 and is arranged opposite to the second clamping piece 3212 to jointly clamp the first mirror 322.

[0045] The first clamping piece 3211 is formed with a receiving groove 104, and the first mirror 322 is arranged in the receiving groove 104. The second clamping piece 3212 covers the receiving groove 104. In actual application, the first mirror 322 can be placed in the receiving groove 104 first, and then the second clamping piece 3212 is covered on the receiving groove 104.

[0046] Optionally, the second clamping piece 3212 is detachably connected with the first clamping piece 3211, for example, through bolt connection. In this way, when the first mirror 322 needs to be taken out, the second clamping piece 3212 can be detached from the first clamping piece 3211, thereby improving the convenience of disassembly.

[0047] Optionally, the first mirror 322 is arranged obliquely relative to the light path direction of the incident light R1.

[0048] Optionally, the included angle a1 between the first mirror 322 and the light path direction of the incident light R1 is 30°-60°, that is, 30°≤a1≤60°. For example, in the embodiment, the light path direction of the incident light R1 is perpendicular to the light path direction of the reflected light R2, and a1=45°.

[0049] Please refer to Figure 2 , Figure 5 and Figure 8 , Figure 8 are Figure 2 the perspective structural schematic view of the second mirror assembly 33. The second mirror assembly 33 is arranged on the side of the bottom plate assembly 20 away from the first mirror assembly 32 and is arranged on the light exit path of the reflected light R2, so that the second mirror assembly 33 receives the reflected light R2 and emits the first diffused light R3. In the embodiment, the second mirror assembly 33 is connected with the bottom plate 22.

[0050] The second mirror assembly 33 comprises a diffusion mechanism 331 and a second mirror mechanism 332. The diffusion mechanism 331 is arranged on the light exit path of the reflected light R2, so that the reflected light R2 passes through the diffusion mechanism 331 and forms the second diffused light R4. The second mirror mechanism 332 is arranged on the light exit path of the second diffused light R4, so that the second mirror mechanism 332 receives the second diffused light R4 and emits the first diffused light R3.

[0051] The second mirror mechanism 332 comprises a second mirror support 332a and a second mirror 332b. The second mirror 332b is installed on the second mirror support 332a and forms a diffusion space 106 with the second mirror support 332a, which communicates with the first light outlet 101. The diffusion mechanism 331 is arranged in the diffusion space 106. That is, the reflected light R2 first passes through the first light outlet 101 and is incident on the diffusion space 106. Then, the diffusion mechanism 331 in the diffusion space 106 receives the reflected light R2, so that the reflected light R2 passes through the diffusion mechanism 331 to form the second diffused light R4.

[0052] Referring to Figure 9 , Figure 9 is Figure 8 an exploded structural schematic view of the second mirror support 332a in the second mirror mechanism 332. The second mirror support 332a is provided with a first positioning part 3321. The second mirror 332b is provided with a second positioning part 3322. The first positioning part 3321 and the second positioning part 3322 are arranged in cooperation, so that the second mirror 332b is installed on the second mirror support 332a.

[0053] Optionally, one of the first positioning part 3321 and the second positioning part 3322 is a positioning protrusion, and the other is a positioning groove. In this embodiment, the first positioning part 3321 is the positioning protrusion, and the second positioning part 3322 is the positioning groove.

[0054] In this embodiment, the positioning protrusion of the first positioning part 3321 is arranged in a stepped manner, so that the second mirror 332b can be directly mounted on the second mirror support 332a.

[0055] Optionally, the second mirror 332b comprises a first mirror block 3323 and a second mirror block 3324. The first mirror block 3323 and the second mirror block 3324 are arranged in splicing.

[0056] Referring to Figure 10 , Figure 10 is Figure 8 an exploded structural schematic view of the diffusion mechanism 331 in the second mirror mechanism 332. The diffusion mechanism 331 comprises a carrier 3311, a cover plate 3312 and a diffusion sheet 3313. The carrier 3311 is connected with the second mirror support 332a and is formed with a mounting groove 107 and a light inlet 108 communicating with the mounting groove 107. The diffusion sheet 3313 is arranged in the mounting groove 107. The cover plate 3312 is arranged on the mounting groove 107 and is formed with a light transmission port 109. The reflected light R2 is incident on the diffusion sheet 3313 through the light inlet 108 and forms the second diffused light R4. The second diffused light R4 is incident on the second mirror 332b through the light transmission port 109.

[0057] Referring to Figure 11 ,Figure 11 is Figure 10 is a schematic view of a cross section of the diffusion mechanism 331 and the second mirror support 332a in a F-F direction, wherein the diffusion mechanism 331 is connected with the second mirror support 332a and is adjustably arranged with the second mirror support 332b.

[0058] Specifically, the second mirror support 332a is provided with an adjusting groove 110, and the second mirror mechanism 332 further comprises a fastener 332c, which is arranged in the adjusting groove 110 and is threadedly connected with the diffusion mechanism 331.

[0059] Optionally, the adjusting groove 110 is arranged along the opening direction of the first light outlet 101, so that the fastener 332c can adjust the distance between the diffusion mechanism 331 and the first light outlet 101.

[0060] Please refer to Figure 2 , Figure 5 and Figure 12 , Figure 12 is Figure 2 is a schematic view of a perspective structure of the third mirror mechanism 341, wherein the third mirror assembly 34 is arranged on the same side of the bottom plate assembly 20 as the second mirror assembly 33 and is arranged on the light path of the first diffused light R3, so that the third mirror assembly 34 receives the first diffused light R3 and forms a projection image.

[0061] Specifically, the third mirror assembly 34 comprises a third mirror mechanism 341 and a polarizing assembly 342, the third mirror mechanism 341 is arranged on the light path of the first diffused light R3, so that the third mirror mechanism 341 receives the first diffused light R3 and emits the third diffused light R5, and the polarizing assembly 342 is arranged on the light path of the third diffused light R5, so that the third diffused light R5 passes through the polarizing assembly 342 and forms a projection image.

[0062] The third mirror mechanism 341 comprises a third mirror support 3411 and a third mirror 3412, the third mirror 3412 is mounted on the third mirror support 3411, and the third mirror 3412 is arranged on the light path of the first diffused light R3.

[0063] The third mirror 3412 is arranged as a curved surface towards the side of the light path direction of the third diffused light R5 from the first diffused light R3.

[0064] Optionally, the included angle α2 between the light path direction of the first diffused light R3 and the light path direction of the third diffused light R5 is an acute angle.

[0065] Optionally, the light path direction of the reflected light R2 is parallel to the light path direction of the third diffused light R5, that is, the light path direction of the second diffused light R4 is parallel to the light path direction of the third diffused light R5.

[0066] Further referring to Figure 2 , the polarizing assembly 342 comprises an upper shell 3421 and a polarizing sheet 3422. The upper shell 3421 is formed with a receiving space (not shown in the figure) and a mounting opening (not marked in the figure) in communication with the receiving space. The third mirror mechanism 341 is arranged in the receiving space. The polarizing sheet 3422 is arranged on the mounting opening and located on the light path of the third diffused light R5.

[0067] Optionally, the projection area of the third mirror 3412 on the polarizing sheet 3422 is less than or equal to the planar area of the polarizing sheet 3422, so that all the third diffused light R5 can pass through the polarizing sheet 3422 to form a projection image.

[0068] Optionally, the polarizing sheet 3422 and the upper shell 3421 are adjustably arranged, so that in actual application, the position of the polarizing sheet 3422 can be adjusted according to actual conditions, thereby improving the utilization rate of the third diffused light R5.

[0069] Further referring to Figure 2 , the light path device 30 in the embodiment further comprises a bottom shell 35 connected with the base 21 and formed with a receiving space 35a. The light source assembly 31 and the first mirror assembly 32 are arranged in the receiving space 35a.

[0070] The bottom shell 35 is provided with a spacing portion 351 on the side close to the receiving space 35a, so as to divide the receiving space 35a into a first sub-space 351a and a second sub-space 351b. The light source assembly 31 is arranged in the first sub-space 351a, and the first mirror assembly 32 is arranged in the second sub-space 351b.

[0071] The spacing portion 351 is provided with a third light outlet 3511 in communication with the first sub-space 351a and the second sub-space 351b, respectively, so that the incident light R1 emitted by the light source assembly 20 is sequentially emitted to the first mirror assembly 32 through the second light outlet 103 and the third light outlet 3511.

[0072] Please refer to Figure 13 , Figure 13 is Figure 4 , the bottom plate 22 is movably arranged relative to the base 21, so that when the bottom plate 22 moves relative to the base 21, the receiving position of the second mirror assembly 33 receiving the reflected light R2 is adjusted, thereby adjusting the display area of the projection image, and avoiding the problem that the projection image cannot be displayed.

[0073] For example, when the reflected light R2 is directed toward the exact center of the diffuser 3313, the projected image can be fully displayed. However, if the reflected light R2 is deviated from the position of the diffuser 3313, some areas of the diffuser 3313 will not be able to diffuse the reflected light R2, resulting in the projected image not being fully displayed. Therefore, by adjusting in the above manner, the reflected light R2 can be directed toward the exact center of the diffuser 3313.

[0074] The base plate assembly 20 also includes a rolling element 23, which is disposed between the base plate 22 and the base 21 so that when the base plate 22 moves relative to the base 21, the rolling element 23 rotates relative to the base 21, thereby reducing the resistance encountered by the base plate 22 when it moves relative to the base 21.

[0075] The base 21 is provided with a mounting groove 211, the rolling element 23 is disposed in the mounting groove 211 and protrudes from the base 21, and the base plate 22 is supported on the rolling element 23.

[0076] Optionally, there may be multiple rolling elements 23, which are arranged in a centrally symmetrical manner with respect to the center of symmetry of the base plate 21, thereby improving the stability of the base plate 22 during movement.

[0077] Please refer to the following: Figure 13 , Figure 14 and Figure 15 , Figure 14 yes Figure 3 A schematic cross-sectional view of the middle base 21 and the base plate 22 in the NN direction. Figure 15 yes Figure 13 A three-dimensional structural diagram of the middle limiting component 24 is shown, in such a way. Figure 14 In one optional embodiment shown, one of the base 21 and the base plate 22 is provided with a first guide portion 21a, and the other of the base 21 and the base plate 22 is provided with a second guide portion (not shown in the figure). The first guide portion 21a and the second guide portion are configured to provide guidance for the base plate 22 to move relative to the base 21.

[0078] In this configuration, one of the first guide portion 21a and the second guide portion is a guide groove, and the other of the first guide portion 21a and the second guide portion is a guide protrusion. Figure 14 In the middle, the first guide part 21a is a guide protrusion, and the second guide part is a guide groove.

[0079] Optionally, one of the first guide portion 21a and the second guide portion is provided with a first engaging portion (not shown in the figure) on the side near the guide groove, and the guide protrusion is provided with a second engaging portion 21b. The first engaging portion and the second engaging portion 21b are engaged to provide guidance for the base plate 22 to move relative to the base 21, while improving the smoothness of the movement process.

[0080] In another optional embodiment as shown in Figure 13 The base assembly 20 further comprises a limiting member 24, the limiting member 24 is connected with one of the base 21 and the bottom plate 22, and the other of the base 21 and the bottom plate 22 is provided with a limiting portion 21c, the limiting member 24 is arranged in cooperation with the limiting portion 21c.

[0081] In the embodiment, the limiting portion 21c is a limiting slot, and the limiting slot extends in the moving direction of the bottom plate 22.

[0082] As shown in Figure 15 The limiting member 21c comprises a connecting body 212 and a limiting body 213, the connecting body 212 is connected with one of the base 21 and the bottom plate 22 and is arranged in the limiting slot, and the limiting body 213 is connected with the connecting body 212 on the side of the other of the base 21 and the bottom plate 22 away from one of the base 21 and the bottom plate 22, in the embodiment, the connecting body 212 is arranged in the limiting slot and is connected with the bottom plate 22, and the limiting body 213 is connected with the connecting body 212 on the side of the base 21 away from the bottom plate 22.

[0083] Further, the bottom plate assembly 20 in the embodiment further comprises a crank 25, the crank is connected with the base 21 and the bottom plate 22 respectively, so that when the crank 25 rotates, the bottom plate 22 moves relative to the base 21.

[0084] Optionally, the number of the crank 25 can be one or more, when the number of the crank 25 is more than one, the plurality of cranks 25 are arranged on different sides of the bottom plate 22 respectively.

[0085] Please refer to Figure 16 , Figure 16 is Figure 3 the perspective structural schematic diagram of the crank, the crank 25 comprises a crank body 251 and a screw rod body 252, the crank body 251 is rotationally connected with the base 21, the screw rod body 252 is fixedly connected with the crank body 251 and is arranged in the bottom plate 22, so that when the crank body 251 rotates relative to the base 21, the bottom plate 22 moves along the extension direction of the screw rod body 252.

[0086] In the above, the limiting slot of the limiting portion 21c extends in the extension direction of the screw rod body 252.

[0087] In the above, the extension length of the limiting slot is less than or equal to the extension length of the screw rod body 252, so that the limiting slot can limit the stroke of the screw rod body 252, thereby limiting the moving stroke of the bottom plate 22.

[0088] Different from the prior art, the head-up display device provided by the embodiments of the present application comprises: a bottom plate assembly; a first light outlet is formed; a light source assembly is connected with the bottom plate assembly and is used for emitting incident light; a first mirror assembly is arranged on the same side of the bottom plate assembly as the light source assembly and is arranged on the light emitting path of the incident light, so that the first mirror assembly receives the incident light and emits reflected light toward the first light outlet; a second mirror assembly is arranged on the side of the bottom plate assembly away from the first mirror assembly and is arranged on the light emitting path of the reflected light, so that the second mirror assembly receives the reflected light and emits first diffused light; and a third mirror assembly is arranged on the same side of the bottom plate assembly as the second mirror assembly and is arranged on the light emitting path of the first diffused light, so that the third mirror assembly receives the first diffused light and forms a projection image. In this way, the second mirror assembly and the third mirror assembly do not need to be arranged on the light emitting path of the light source assembly, thereby avoiding the problem that the size of the head-up display device in the direction of the light path of the light source is large.

[0089] The above is only part of the embodiments of the present application, and does not limit the protection scope of the present application, and any equivalent device or equivalent process transformation using the content of the specification and drawings of the present application, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A head-up display device for rail transportation, characterized by, The head-up display device comprises: a bottom plate assembly formed with a first light outlet; a light source assembly connected with the bottom plate assembly and used for emitting incident light; a first mirror assembly disposed on the same side of the bottom plate assembly as the light source assembly and on the light emitting path of the incident light, so that the first mirror assembly receives the incident light and emits reflected light toward the first light outlet; a second mirror assembly disposed on the side of the bottom plate assembly away from the first mirror assembly and on the light emitting path of the reflected light, so that the second mirror assembly receives the reflected light and emits first diffused light; a third mirror assembly disposed on the same side of the bottom plate assembly as the second mirror assembly and on the light emitting path of the first diffused light, so that the third mirror assembly receives the first diffused light and forms a projection image; the bottom plate assembly comprises a base and a bottom plate, the base is formed with a first sub-outlet, the light source assembly is connected with the base, the bottom plate is disposed on the side of the base away from the light source assembly and is formed with a second sub-outlet, the first sub-outlet and the second sub-outlet jointly form the first light outlet, and the second mirror assembly and the third mirror assembly are respectively connected with the bottom plate; the bottom plate is movably disposed opposite to the base, so that when the bottom plate moves relative to the base, the light position and / or the light angle of the first diffused light are adjusted; the light source assembly comprises a light source shell and a light source, the light source shell is formed with a mounting space and a second light outlet communicating with the mounting space, and the light source is disposed in the mounting space, the incident light emitted by the light source is emitted from the light source shell through the second light outlet.

2. The head-up display device of claim 1, wherein the bottom plate assembly further comprises a handle, the handle is connected with the base and the bottom plate respectively, so that when the handle rotates, the bottom plate is driven to move relative to the base.

3. The head-up display device of claim 2, wherein the handle comprises a handle body and a screw rod body, the handle body is rotationally connected with the base, the screw rod body is fixedly connected with the handle body and penetrates through the bottom plate, so that when the handle body rotates relative to the base, the bottom plate moves along the extension direction of the screw rod body.

4. The head-up display device of claim 1, wherein the first mirror assembly comprises a first mirror support and a first mirror, the first mirror support is disposed on the same side of the bottom plate assembly as the light source assembly and is connected with the bottom plate assembly, and the first mirror is mounted on the first mirror support and is disposed on the light emitting path of the incident light.

5. The head-up display device of claim 4, wherein, the first mirror is disposed obliquely relative to the light path direction of the incident light.

6. The head-up display device of claim 1, wherein, the second mirror assembly comprises a diffusion mechanism and a second mirror mechanism, the diffusion mechanism is disposed on the light emitting path of the reflected light, so that the reflected light passes through the diffusion mechanism and forms second diffused light, and the second mirror mechanism is disposed on the light emitting path of the second diffused light, so that the second mirror mechanism receives the second diffused light and emits the first diffused light.

7. The head-up display device of claim 6, wherein, The second mirror mechanism comprises a second mirror support and a second mirror, the second mirror is installed on the second mirror support and forms a diffusion space with the second mirror support in communication with the first light outlet, and the diffusion mechanism is arranged in the diffusion space.

8. The head-up display device of claim 1, wherein, The third mirror assembly comprises a third mirror mechanism and a polarizing assembly, the third mirror mechanism is arranged on the light path of the first diffusion light rays, so that the third mirror mechanism receives the first diffusion light rays and emits third diffusion light rays, and the polarizing assembly is arranged on the light path of the third diffusion light rays, so that the third diffusion light rays pass through the polarizing assembly and form the projection image.

Images