Optical display, display device and vehicle

Abstract

The embodiment of the invention provides an optical display, a display device and a vehicle, and belongs to the technical field of display. The optical display comprises a window part, a middle shell, an image source part, a first sealing structure and a second sealing structure. The image source part comprises an extension part and a circuit board, the projection of the extension part and the projection of the circuit board are not overlapped in the thickness direction of the image source part, the first sealing structure is used for sealing a gap between the middle shell and the extension part, the second sealing structure is used for sealing a gap between the circuit board and the middle shell, and the second sealing structure is used for sealing a gap between the circuit board and the middle shell in the thickness direction of the image source part. The projection of the first sealing structure and the projection of the second sealing structure are not overlapped with the projection of the light emitting surface of the image source part. Or, an annular sealing piece is arranged between the light emitting surface of the image source piece and the middle shell, so that a gap between the image source piece and the middle shell can be sealed. Therefore, the dustproof and waterproof requirements can be met, and the display effect is improved.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to an optical display, display device, and vehicle. Background Technology

[0002] An optical display refers to a type of device that uses optical imaging principles to achieve a large-screen visual experience within a small space. It can be applied to projectors, head-up displays, automotive displays, vehicle lights, and other devices. In related technologies, an optical display includes a viewing window, an image source screen, a curved mirror, and a housing. The housing has a first opening and a second opening. The viewing window covers the first opening and is connected to the housing. The image source screen is disposed outside the housing and fixedly connected to it, covering the second opening. The housing, viewing window, and image source screen together form an optical cavity, and the curved mirror is disposed inside the optical cavity. The image source screen emits an imaging beam through the second opening toward the viewing window. The viewing window reflects the imaging beam to the curved mirror and transmits the reflected imaging beam to the outside of the optical cavity. The curved mirror reflects the imaging beam from the viewing window. However, the poor sealing performance between the image source screen and the housing fails to meet dust and water resistance requirements, thus reducing the display effect. Summary of the Invention

[0003] This application provides an optical display, display device, and vehicle that can meet dustproof and waterproof requirements and improve display performance.

[0004] This application provides an optical display, including a window, a middle shell, an image source, a first sealing structure, and a second sealing structure. The middle shell has a first opening and a second opening. The window is disposed at the first opening, and the light-emitting surface of the image source covers the second opening. The light-emitting surface of the image source does not contact the first sealing structure, the second sealing structure, or the middle shell. The image source emits an imaging beam toward the window. The image source includes an extension and a circuit board. Along the thickness direction of the image source, the projection of the extension does not overlap with the projection of the circuit board. The first sealing structure seals the gap between the middle shell and the extension, and the second sealing structure seals the gap between the circuit board and the middle shell.

[0005] By sealing the gap between the extension and the middle shell with a first sealing structure, and sealing the gap between the circuit board and the middle shell with a second sealing structure, the gap between the image source component and the middle shell is sealed, thus meeting dustproof and waterproof requirements and improving display performance. At the same time, the first sealing structure, the second sealing structure, and the middle shell do not contact the light-emitting surface of the image source component, preventing deformation of the light-emitting surface and further improving display performance.

[0006] In one possible implementation, the first sealing structure is a first labyrinth structure, which includes a groove and a protrusion inserted into the groove, wherein one of the groove and the protrusion is disposed in the middle shell and the other is disposed in the extension.

[0007] In this way, the extension and the middle shell are sealed together by the first labyrinth structure, which can seal the gap between the extension and the middle shell, preventing dust, water, etc. from entering the interior of the middle shell through the gap between the extension and the middle shell, thus meeting the dustproof and waterproof requirements. At the same time, the protrusion is inserted into the groove, making the size of the first sealing structure in the thickness direction of the image source element smaller, which can reduce the gap between the image source element and the middle shell and contribute to the miniaturization of optical displays.

[0008] In one possible implementation, a groove is provided in the extension, a protrusion is provided in the middle shell, the protrusion has an annular structure, a portion of the circuit board is provided inside the protrusion, and the projection of the protrusion overlaps with the projection portion of the circuit board in a direction perpendicular to the thickness direction of the image source.

[0009] In this way, the protrusion can seal part of the gap between the circuit board and the middle shell, blocking some dust, water, etc. Combined with the second sealing structure, the sealing performance between the circuit board and the middle shell can be further improved.

[0010] In one possible implementation, the first sealing structure is a sealing element, which is disposed between the extension and the middle shell along the thickness direction of the image source element and abuts against the extension and the middle shell respectively.

[0011] In this way, the seal is sandwiched between the middle shell and the extension. As the seal deforms, it can make close contact with the extension and the middle shell, sealing the gap between the extension and the middle shell. This prevents dust, water, and other contaminants from entering the interior of the middle shell through the gap between the extension and the middle shell, thus meeting the requirements for dustproof and waterproof protection.

[0012] In one possible implementation, the seal is an annular structure, and along the thickness direction of the image source, a portion of the seal's projection overlaps with the projection of the circuit board, and another portion overlaps with the projection of the extension.

[0013] In this way, the seal can seal part of the gap between the circuit board and the middle shell, blocking some dust, water, etc. Combined with the second sealing structure, the sealing performance between the circuit board and the middle shell can be further improved.

[0014] In one possible implementation, the second sealing structure includes a cover member, a first end of which is connected to the image source member, and a second end of which is connected to the middle shell. The cover member is used to cover the gap between the circuit board and the middle shell.

[0015] This prevents dust and water from entering the interior of the middle shell through the gap between the circuit board and the middle shell, thus meeting the requirements for dust and water resistance.

[0016] In one possible implementation, the cover does not contact the circuit board.

[0017] In this way, the cover is spaced apart from the circuit board, and the cover will not exert force on the circuit board, thus avoiding damage to the circuit board.

[0018] In one possible implementation, the second sealing structure includes a filler located between the circuit board and the middle shell along the thickness direction of the image source element. The projection of the filler overlaps with the projection of the circuit board, and the filler is used to seal the gap between the circuit board and the middle shell.

[0019] This prevents dust and water from entering the interior of the middle shell through the gap between the circuit board and the middle shell, thus meeting the requirements for dust and water resistance.

[0020] A second aspect of this application provides an optical display, including a window, a middle shell, an image source, and an annular seal. The middle shell has a first opening and a second opening. The window is disposed at the first opening, and the image source is disposed outside the middle shell and covers the second opening. The annular seal is disposed between the middle shell and the light-emitting surface of the image source and abuts against both the middle shell and the light-emitting surface. The annular seal communicates with the second opening, and the image source emits an imaging beam toward the window through the interior of the annular seal and the second opening.

[0021] By setting an annular seal between the light-emitting surface and the middle shell, the gap between the light-emitting surface and the middle shell can be sealed, preventing water, dust, and other contaminants from entering the interior of the middle shell through the gap, thus improving the display effect.

[0022] In one possible implementation, the optical display further includes a second labyrinth structure comprising an annular portion and a flanged portion. The annular portion is disposed on the outer wall of the middle shell, a second opening communicates with the interior of the annular portion, and an annular seal is located inside the annular portion. The flanged portion is disposed on the image source member, and along the thickness direction of the image source member, the projection of the flanged portion overlaps with the projection of the annular portion.

[0023] In this way, the combination of the second labyrinth structure and the annular seal can further improve the sealing performance between the image source and the middle shell.

[0024] A third aspect of this application provides a display device, including an optical display as described in either the first or second aspect.

[0025] The fourth aspect of this application provides a means of transportation, including an optical display as described in either the first or second aspect.

[0026] In one possible implementation, the vehicle also includes an instrument panel with an optical display mounted on it.

[0027] In one possible implementation, the vehicle also includes a seat, with an optical display mounted on the seat. Attached Figure Description

[0028] Figure 1 This is a cross-sectional schematic diagram of an optical display in related technologies;

[0029] Figure 2 A schematic diagram of the structure of a means of transportation provided in an embodiment of this application;

[0030] Figure 3 A cross-sectional schematic diagram of a first type of optical display provided in an embodiment of this application;

[0031] Figure 4 for Figure 3 Enlarged view of point B in the middle;

[0032] Figure 5 for Figure 3 A schematic diagram of the architecture of the middle shell and the image source component working together;

[0033] Figure 6 for Figure 5 Schematic diagram of the cross section at point AA;

[0034] Figure 7 for Figure 5 Schematic diagram of the cross section at point BB;

[0035] Figure 8 for Figure 6 A cross-sectional schematic diagram of the shell with a groove.

[0036] Figure 9 A schematic diagram of the architecture of the image source and the middle shell in a second type of optical display provided in this application embodiment;

[0037] Figure 10 for Figure 9 Enlarged view of point K;

[0038] Figure 11 for Figure 9 Schematic diagram of the cross section at point AA;

[0039] Figure 12 for Figure 9 Schematic diagram of the cross section at point BB;

[0040] Figure 13 A schematic diagram of the structure of the image source component and the middle shell in the third type of optical display provided in the embodiments of this application;

[0041] Figure 14 This is a schematic diagram of the architecture of the image source component and the middle shell in the fourth type of optical display provided in the embodiments of this application.

[0042] Explanation of reference numerals in the attached figures:

[0043] 100. Means of transportation;

[0044] 200. Main body of the vehicle;

[0045] 300. Optical display;

[0046] 10. Image source component; 10A. Light-emitting surface;

[0047] 11. Light-emitting element; 111. Light-emitting layer; 112. Cover plate layer;

[0048] 12. Circuit board;

[0049] 13. Circuit components;

[0050] 14. Shell; 141. Body; 142. Extension; 143. Flanged edge;

[0051] 20. Middle shell; 21. First opening; 22. Second opening; 23. Groove; 24. Annular portion;

[0052] 30. Windows component;

[0053] 40. Curved mirror;

[0054] 50. First sealing structure; 51. Groove portion; 52. Protrusion portion; 53. Sealing element;

[0055] 60. Second sealing structure; 61. Covering element; 62. Filler element;

[0056] 70. Annular seal;

[0057] A. Optical cavity; M. Maze. Detailed Implementation

[0058] Figure 1 This is a cross-sectional schematic diagram of an optical display in the related technology.

[0059] In related technologies, see Figure 1As shown, the optical display 101 includes a viewing window 102, an image source screen 103, a curved mirror 104, and a housing 105. The housing 105 has a first opening and a second opening. The viewing window 102 covers the first opening and is connected to the housing 105. The image source screen 103 covers the second opening and is connected to the housing 105. The housing 105, the viewing window 102, and the image source screen 103 together form an optical cavity 106. The curved mirror 104 is disposed inside the optical cavity 106. The image source screen 103 emits an imaging beam toward the viewing window 102. The viewing window 102 reflects the imaging beam to the curved mirror 104 and transmits the reflected imaging beam to the outside of the optical cavity 106. The curved mirror 104 reflects the imaging beam from the viewing window 102.

[0060] See also Figure 1 As shown, the image source screen 103 is disposed outside the housing 105 and connected to the housing 105. However, the sealing performance between the image source screen 103 and the housing 105 is poor, failing to meet dustproof and waterproof requirements, which reduces the display effect. Therefore, how to improve the sealing performance between the image source screen 103 and the housing 105 has become an urgent problem to be solved.

[0061] In view of this, embodiments of this application provide an optical display 300, a display device, and a vehicle 100. The optical display 300 seals the gap between the light-emitting surface 10A of the image source component 10 and the middle shell 20 by means of an annular seal 70, or seals the gap between the middle shell 20 and the image source component 10 by means of a first sealing structure 50 and a second sealing structure 60. This can improve the sealing performance between the image source component 10 and the middle shell 20, meet the dustproof and waterproof requirements, and improve the display effect.

[0062] The vehicle 100 provided in this application embodiment may include, but is not limited to, known vehicles 100 such as automobiles, airplanes, ships, and trains. Furthermore, the vehicle 100 provided in this application embodiment may also be a newly emerging vehicle 100 in the future.

[0063] The vehicle can be an electric vehicle, a gasoline-powered vehicle, or a hybrid vehicle, such as a pure electric vehicle, a range-extended electric vehicle, a new energy vehicle, a fuel cell vehicle, or a hybrid electric vehicle. For example, in this embodiment, a vehicle is used as the aforementioned means of transportation 100 for illustration.

[0064] Figure 2 This is a schematic diagram of the structure of a means of transportation provided in an embodiment of this application.

[0065] See Figure 2As shown, the vehicle 100 includes a vehicle body 200 and an optical display 300. The optical display 300 is mounted on the vehicle body 200. The vehicle body 200 includes a seat, a dashboard, and headlights.

[0066] For example, the optical display 300 is mounted in the dashboard, positioned in front of the passenger seat. Of course, the optical display 300 can also be mounted in other locations, such as the seat. In some implementations, the optical display 300 can be mounted on the headrest of the seat. In other implementations, the optical display 300 can be mounted on the seat body. In still other implementations, the optical display 300 can be mounted on both the headrest and the seat body.

[0067] It should be noted that the optical display 300 provided in this application embodiment can be applied not only to the vehicle 100, but also to other devices. In some implementations, the optical display 300 can also be applied to display devices such as head-up displays (HUDs), projectors, televisions, and near-eye display (NED) devices.

[0068] The specific type of NED device is not limited here. For example, it can be an AR device or a VR device. AR devices can include, but are not limited to, AR glasses or AR helmets, and VR devices can include, but are not limited to, VR glasses or VR helmets.

[0069] The types of HUDs include, but are not limited to, windshield (W)-HUDs and augmented reality head-up displays (AR-HUDs).

[0070] In other implementations, the optical display 300 can also be used in medical devices, office and entertainment devices, or industrial control devices, etc., without specific limitations.

[0071] The implementation of the optical display 300 provided in the embodiments of this application will be described below.

[0072] Figure 3 A cross-sectional schematic diagram of the first type of optical display provided in the embodiments of this application. Figure 4 for Figure 3 Enlarged diagram of point B in the middle.

[0073] See Figure 3As shown, the optical display 300 includes a viewing window 30, a middle shell 20, a curved mirror 40, and an image source 10. The middle shell 20 has a first opening 21 and a second opening 22, and the viewing window 30 is disposed at the first opening 21. The image source 10 is disposed outside the middle shell 20, and its light-emitting surface 10A covers the second opening 22, without contacting the middle shell 20. The image source 10, the middle shell 20, and the viewing window 30 together form an optical cavity A, with the first opening 21 and the second opening 22 communicating with the optical cavity A. The curved mirror 40 is disposed inside the optical cavity A and is used to reflect the imaging beam. The image source 10 emits the imaging beam into the optical cavity A through the second opening 22. The viewing window 30 reflects the imaging beam emitted by the image source 10 to the curved mirror 40 and transmits the imaging beam from the curved mirror 40 to the outside of the optical cavity A.

[0074] See Figure 3 As shown, during the operation of the optical display 300, the image source 10 emits an imaging beam (such as an image beam) through the second opening 22 onto the inner surface of the viewing window 30. Figure 3 (Solid arrow in the middle) The inner surface of the window 30 reflects the imaging beam to the surface of the curved mirror 40, which in turn reflects the imaging beam back to the inner surface of the window 30. The imaging beam reflected by the curved mirror 40 passes through the inner surface of the window 30 and exits from the outer surface of the window 30 to the outside of the optical cavity A. The imaging beam located outside the optical cavity A enters the eye, and the eye can see a magnified virtual image.

[0075] Virtual images can be viewed by the eyes without needing to be received by a light screen. For example... Figure 3 As shown, the image source 10 emits an imaging beam with a certain divergence angle. After being reflected by the viewing window 30 and the curved mirror 40, it enters the eye. The brain, based on the experience that "light travels in a straight line," traces the light beam in the reverse direction and considers the intersection of the backward extensions of the imaging beam as the object point, i.e., the virtual image point. The location of the eye can be called the eyebox position. Figure 3 As shown, the imaging beam includes imaging beam L1 and imaging beam L2, and the two imaging beams define the divergence angle of the light emitted by the image source device 10.

[0076] It should be noted that, Figure 3 The optical path shown is an illustration; other optical path schemes can also be used to achieve virtual image display, which will not be described in detail here.

[0077] In some implementations, the imaging beam transmitted from the window 30 to the outside of the optical display 300 can also be projected onto a light screen (not shown in the figure) located outside the optical display 300. The light screen can be a wall, projection screen, template, etc. The specific form of the light screen is not limited here.

[0078] In this embodiment, the specific structure of the curved mirror 40 is not shown. The curved mirror 40 can be a free-form surface mirror, a spherical mirror, or an aspherical mirror, etc.

[0079] The image source device 10 can employ liquid crystal display (LCD) imaging technology, digital light processing (DLP) technology, laser scanning projection, etc. For example, the image source device 10 can be a liquid crystal on silicon (LCOS) image source device, an organic light-emitting diode (OLED) image source device, a liquid crystal display (LCD) image source device, a digital light processing (DLP) image source device, or a micro-electro-mechanical system (MEMS) image source device.

[0080] For example, such as Figure 4 As shown, the image source device 10 includes a light-emitting element 11, a circuit board 12, a circuit element 13, and a housing 14. The housing 14 is fixedly connected to the middle housing 20 to secure the image source device 10 to the middle housing 20. The circuit element 13 is mounted at the first end of the housing 14, and the light-emitting element 11 is mounted at the second end of the housing 14, located at and covering the second opening 22. The first end of the circuit board 12 is electrically connected to the circuit element 13, and the second end of the circuit board 12 is electrically connected to the light-emitting element 11. The circuit board 12 is used to transmit the image signal output by the circuit element 13 to the light-emitting element 11, causing the light-emitting element 11 to emit an imaging beam according to the image signal.

[0081] Figure 5 for Figure 3 A schematic diagram of the architecture of the middle shell and the image source component working together. Figure 6 for Figure 5 A cross-sectional view at point AA. Figure 7 for Figure 5 A cross-sectional view of section BB.

[0082] See Figures 4 to 6As shown, circuit element 13 is disposed on the outer surface of the housing, and light-emitting element 11 is disposed on the inner surface of the housing. The housing 14 is provided with a clearance notch for the circuit board 12 on the side facing the middle shell 20, so that part of the sidewall of the light-emitting element 11 is exposed and electrically connected to the circuit board 12. Thus, part of the circuit board 12 is located inside the housing 14 and another part is located outside the housing 14, so that the circuit board 12 can electrically connect the circuit element 13 and the light-emitting element 11.

[0083] like Figure 4 and Figure 6 As shown, the light-emitting element 11 includes a cover plate layer 112 and a light-emitting layer 111 stacked together. The light-emitting layer 111 is electrically connected to the circuit element 13 via a circuit board 12 and is used to emit an imaging beam. The cover plate layer 112 is disposed between the light-emitting layer 111 and the middle shell 20, and along the thickness direction of the image source element 10, the projection of the cover plate layer 112 overlaps with the projection of the light-emitting layer 111. The cover plate layer 112 protects the light-emitting layer 111 and allows the imaging beam to be transmitted into the interior of the optical cavity A.

[0084] The thickness direction of the image source element 10 can be understood as the stacking direction of the cover plate layer 112 and the light-emitting layer 111, or it can be understood as the direction perpendicular to the light-emitting surface 10A of the image source element 10.

[0085] To ensure that the imaging beam passes through the cover plate layer 112, the cover plate layer 112 is typically made of a light-transmitting material, such as a glass layer. Of course, the cover plate layer 112 can also be made of other materials, which will not be described in detail here.

[0086] To prevent deformation of the cover plate layer 112 from reducing the display effect, such as Figure 6 or Figure 7 As shown, the cover plate layer 112 does not contact the middle shell 20. In other words, the cover plate layer 112 and the middle shell 20 are spaced apart. In this way, the cover plate layer 112 will not be subjected to force or deform during the process of the image source 10 connecting to the middle shell 20, thus ensuring the display effect.

[0087] It is understandable that, such as Figure 4 As shown, the surface of the cover plate layer 112 facing the middle shell 20 is the light-emitting surface 10A of the image source element 10. The light-emitting surface 10A of the image source element 10 does not contact the middle shell 20, which can ensure the display effect of the optical display 300.

[0088] For example, such as Figure 4 , Figure 6 and Figure 7As shown, the housing 14 includes an extension 142 and a body 141. The body 141 is fixedly connected to the middle housing 20, connecting the image source component 10 to the middle housing 20, and also serves to support the circuit element 13 and the light-emitting element 11. Along the thickness direction of the image source component 10, the projection of the extension 142 does not overlap with the projection of the circuit board 12, and there is a gap between the extension 142 and the middle housing 20.

[0089] It is understood that the extension 142 is a ring structure with a notch, and part of the circuit board 12 is disposed inside the notch, ensuring that the circuit board 12 is electrically connected to the light-emitting element 11 through the notch of the extension 142.

[0090] It should be noted that the clearance notch mentioned above is located on the side of the main body 141 facing the middle shell 20 to ensure that the light-emitting layer 111 is electrically connected to the circuit board 12.

[0091] To meet dustproof and waterproof requirements, see Figures 4 to 7 As shown, the optical display 300 also includes a first sealing structure 50 and a second sealing structure 60. Both the first sealing structure 50 and the second sealing structure 60 do not contact the light-emitting surface 10A of the image source 10. The first sealing structure 50 is used to seal the gap between the middle shell 20 and the extension 142, and the second sealing structure 60 is used to seal the gap between the circuit board 12 and the middle shell 20.

[0092] By sealing the gap between the extension 142 and the middle shell 20 with the first sealing structure 50, and sealing the gap between the circuit board 12 and the middle shell 20 with the second sealing structure 60, the gap between the image source component 10 and the middle shell 20 is sealed, which meets the dustproof and waterproof requirements and improves the display effect. At the same time, the first sealing structure 50, the second sealing structure 60 and the middle shell 20 do not overlap with the light-emitting surface 10A of the image source component 10, which can prevent the light-emitting surface 10A from being deformed and ensure the display effect.

[0093] For example, such as Figure 4 , Figure 6 and Figure 7 As shown, the first sealing structure 50 is a first labyrinth structure. The first labyrinth structure includes a groove portion 51 and a protrusion portion 52 inserted into the groove portion 51. One of the groove portion 51 and the protrusion portion 52 is disposed in the middle shell 20 and the other is disposed in the extension portion 142.

[0094] In this way, the extension 142 and the middle shell 20 are sealed together by the first labyrinth structure, which can seal the gap between the extension 142 and the middle shell 20, preventing dust, water, etc. from entering the interior of the middle shell 20 through the gap between the extension 142 and the middle shell 20, thus meeting the dustproof and waterproof requirements. At the same time, the protrusion 52 is inserted into the groove 51, making the first sealing structure 50 smaller in the thickness direction of the image source member 10, which can reduce the gap between the image source member 10 and the middle shell 20, and contribute to the miniaturization of the optical display 300.

[0095] In some implementations, such as Figure 6 and Figure 7 As shown, when the protrusion 52 is inserted into the groove 51, the top surface of the protrusion 52 abuts against the bottom of the groove 51, and the side wall of the protrusion 52 contacts one side wall of the groove, so that there is no gap between the protrusion 52 and the inner wall of the groove 51, thereby sealing the gap between the extension 142 and the middle shell 20.

[0096] In some other implementations, the top surface of the protrusion 52 may not contact the bottom of the groove 51, and the protrusion 52 may be in close contact with the side wall of the groove, thus sealing the gap between the extension 142 and the middle shell 20.

[0097] In some other implementations, when the protrusion 52 is inserted into the recess 51, the protrusion 52 may not contact the inner wall of the recess 51. In this case, the extension 142 abuts against the surface of the middle shell 20 along the thickness direction of the image source 10 and fits tightly against the middle shell 20, which can also achieve a sealed fit between the extension 142 and the middle shell 20.

[0098] In summary, when the protrusion 52 is inserted into the recess 51, the protrusion 52 is in close contact with the bottom or side wall of the recess 51, or the surface of the extension 142 facing the middle shell 20 is in close contact with the middle shell 20, which can seal the gap between the extension 142 and the middle shell 20 to achieve dustproof and waterproof.

[0099] In some implementations, such as Figure 6 or Figure 7 As shown, the groove 51 is provided on the extension 142, and the protrusion 52 is provided on the middle shell 20. In some other implementations, the groove 51 may also be provided on the middle shell 20, and correspondingly, the protrusion 52 may be provided on the extension 142.

[0100] By placing the groove 51 on either the extension 142 or the middle shell 20, the gap between the extension 142 and the middle shell 20 can be sealed. However, placing the groove 51 on the extension 142 can reduce the difficulty of shaping and manufacturing the middle shell 20, and can also avoid affecting the imaging beam inside the middle shell 20.

[0101] Figure 8 for Figure 6 A cross-sectional schematic diagram of the shell with a groove.

[0102] See Figure 8 As shown, the extension 142 is an annular structure with a notch, and a portion of the circuit board 12 is disposed within the notch of the extension 142. Therefore, the groove 51 is an open annular groove, which surrounds the second opening 22.

[0103] In some implementations, the protrusion 52 is a ring structure, and a portion of the circuit board 12 is disposed inside the protrusion 52, along a direction perpendicular to the thickness direction of the image source 10 (e.g., Figure 4 In the Y direction, the projection of the protrusion 52 overlaps with the projection of the circuit board 12.

[0104] In this way, the protrusion 52 can seal part of the gap between the circuit board 12 and the middle shell 20, blocking some dust, water, etc., and combined with the second sealing structure 60, it can further improve the sealing performance between the circuit board 12 and the middle shell 20.

[0105] Understandably, see Figure 6 and Figure 7 As shown, a portion of the protrusion 52 is inserted into the interior of the recess 51, and another portion is disposed in the notch of the extension 142. The protrusion 52 cooperates with the recess 51 to seal the gap between the extension 142 and the middle shell 20, and can also seal a portion of the gap between the circuit board 12 and the middle shell 20.

[0106] For example, the protrusion 52 and the middle shell 20 are an integral structure. On the one hand, the protrusion 52 and the middle shell 20 can be manufactured by integral molding. On the other hand, the sealing performance between the middle shell 20 and the protrusion 52 can be improved.

[0107] For example, the cross-section of the groove 51 can be U-shaped, and the cross-section of the groove 51 is parallel to the thickness direction of the image source member 10. However, in some implementations, the cross-section of the groove 51 can also be V-shaped or W-shaped. When the cross-section of the groove 51 is W-shaped, the cross-section of the protrusion 52 is also W-shaped, so that the protrusion 52 can be inserted into the interior of the groove 51. The cross-section of the protrusion 52 is parallel to the thickness direction of the image source member 10.

[0108] It should be noted that the first sealing structure 50 can be any other structure besides the first labyrinth structure.

[0109] Figure 9 This is a schematic diagram of the architecture of the image source component and the middle shell in the second type of optical display provided in this application embodiment. Figure 10 for Figure 9 Enlarged diagram of point K in the middle. Figure 11 for Figure 9 A cross-sectional view at point AA. Figure 12 for Figure 9 A cross-sectional view of section BB.

[0110] Figure 9 and Figure 5 The difference lies in the first sealing structure 50. See specifically... Figures 9 to 12 As shown, the first sealing structure 50 is a sealing element 53, which is disposed between the extension 142 and the middle shell 20 and abuts against both the extension 142 and the middle shell 20. By clamping the sealing element 53 between the middle shell 20 and the extension 142, the sealing element 53 can elastically deform and make tight contact with the extension 142 and the middle shell 20, sealing the gap between the extension 142 and the middle shell 20, preventing dust, water, etc. from entering the interior of the middle shell 20 from the gap between the extension 142 and the middle shell 20, thus meeting the dustproof and waterproof requirements.

[0111] Among them, the sealing element 53 can be a foam element or a silicone element, etc., and there are no specific restrictions here.

[0112] For example, the seal 53 is an annular structure along the thickness direction of the image source 10 (e.g., Figure 11 In the X direction, a portion of the seal 53 is located between the circuit board 12 and the middle shell 20, and another portion is located between the extension 142 and the middle shell 20. A portion of the projection of the seal 53 overlaps with the projection of the circuit board 12, and another portion overlaps with the projection of the extension 142.

[0113] In this way, the seal 53 can seal a portion of the gap between the circuit board 12 and the middle shell 20, blocking some dust, water, etc. Combined with the second sealing structure 60, the sealing performance between the circuit board 12 and the middle shell 20 can be further improved.

[0114] Among them, such as Figure 11 or Figure 12 As shown, the inner diameter of the seal 53 is larger than the inner diameter of the second opening 22, ensuring that the image source 10 can emit an imaging beam toward the viewing window 30 through the interior of the seal 53 and the second opening 22. However, the inner diameter of the seal 53 can also be equal to or smaller than the inner diameter of the second opening 22, which also allows the imaging beam emitted by the image source 10 to be directed toward the viewing window 30.

[0115] In some implementations, the seal 53 may also be an annular structure with a notch. In this case, along the thickness direction of the image source 10, a portion of the projection of the seal 43 overlaps with the projection of the extension 142, and another portion overlaps with the projection of the circuit board 12. Alternatively, the projection of the seal 43 overlaps with the projection of the extension 142 but does not overlap with the projection of the circuit board 12. The notch of the seal 53 communicates with the notch of the extension 142, such that at least a portion of the circuit board 12 and the middle shell 20 are disposed face-to-face in the thickness direction of the image source 10.

[0116] For example, see Figures 4 to 6 As shown, the second sealing structure 60 includes a cover member 61. A first end of the cover member 61 is connected to the image source member 10, and a second end of the cover member 61 is connected to the middle shell 20. The cover member 61 is used to cover the gap between the circuit board 12 and the middle shell 20. This prevents dust, water, and other contaminants from entering the interior of the middle shell 20 through the gap between the circuit board 12 and the middle shell 20, thus meeting dustproof and waterproof requirements.

[0117] The material of the cover 61 needs to meet the requirements of waterproofing and dustproofing, but no specific restrictions are imposed here. For example, the cover 61 can be a waterproof membrane, polyethylene membrane, etc.

[0118] The cover 61 can be connected to the middle shell 20 and the image source 10 by adhesive grounding. Of course, the cover 61 can also be connected to the image source 10 and the middle shell 20 by other means.

[0119] For example, along a direction perpendicular to the thickness direction of the image source 10 (e.g. Figure 4 In the Y direction), the projection of the cover 61 covers a portion of the projection of the circuit board 12. In some implementations, along a direction perpendicular to the thickness direction of the image source 10 (e.g., in the Y direction), the projection of the cover 61 covers a portion of the projection of the circuit board 12. Figure 4 In the Y direction, the projection of the cover 61 can also cover the projection of the circuit board 12.

[0120] like Figure 4 and Figure 6 As shown, the first sealing structure 50 is a first labyrinth structure. In a direction perpendicular to the vertical direction of the image source component 10, the projection of the protrusion 52 covers a portion of the gap between the circuit board 12 and the middle shell 20. Therefore, in a direction perpendicular to the vertical direction of the image source component 10, while the projection of the covering component 61 covers the gap between the circuit board 12 and the protrusion 52, it can also cover the gap between the circuit board 12 and the middle shell 20, thus achieving a seal between the middle shell 20 and the circuit board 12.

[0121] In some implementations, when the seal 53 is an annular structure, along the thickness direction of the image source 10, a portion of the seal 53 is located between the extension 142 and the middle shell 20, and another portion is located between the circuit board 12 and the middle shell 20. The projection of the seal 53 overlaps with the projections of the extension 142 and the circuit board 12, respectively. Along a direction perpendicular to the thickness direction of the image source 10, the projection of the cover 61 overlaps with the projections of the seal 53 and the circuit board 12, respectively. Therefore, the cover 61 covers the gap between the seal 53 and the circuit board 12, thereby achieving a seal between the circuit board 12 and the middle shell 20.

[0122] In other implementations, when the seal 53 is an annular notch with a gap, the projection of the cover 61 overlaps with the projection of the middle shell 20 and the projection of the circuit board 12 in a direction perpendicular to the thickness direction of the image source 10. Therefore, the cover 61 can cover the gap formed by the circuit board 12, the housing 14, the middle shell 20 and the seal 53, thereby covering the gap between the circuit board 12 and the middle shell 20, and thus achieving a seal for the circuit board 12 and the middle shell 20.

[0123] In some possible implementations, such as Figure 4 As shown, the cover 61 does not contact the circuit board 12, so that the cover 61 and the circuit board 12 are spaced apart. The cover 61 will not exert force on the circuit board 12, thus avoiding damage to the circuit board 12.

[0124] It should be noted that the second sealing structure 60 can be any structure other than the cover 61.

[0125] In some other possible implementations, such as Figures 10 to 12 As shown, the second sealing structure 60 includes a filler 62 along the thickness direction of the image source element 10 (e.g., ...). Figure 11 (In the X direction), the filler 62 is located between the circuit board 12 and the middle shell 20. The projection of the filler 62 overlaps with the projection of the circuit board 12. The filler 62 is used to seal the gap between the circuit board 12 and the middle shell 20. In this way, dust, water, etc. can be prevented from entering the interior of the middle shell 20 through the gap between the circuit board 12 and the middle shell 20, thus meeting the dustproof and waterproof requirements.

[0126] The filler 62 can be a plastic part or a gel part, etc., and there are no restrictions here. A gel part can be understood as a structure formed by dispensing glue between the extension 142 and the middle shell 20.

[0127] like Figure 10 As shown, along the thickness direction of the image source 10 (e.g.) Figure 11 In the X direction), a portion of the filler 62 is disposed between the extension 142 and the middle shell 20, and another portion is disposed between the circuit board 12 and the middle shell 20. For example... Figure 11 and Figure 12 As shown, along the direction perpendicular to the thickness direction of the image source 10 (e.g.) Figure 11 In the X direction, part of the projection of the filler 62 overlaps with the projection of the circuit board 12, and another part overlaps with the projection of the extension 142.

[0128] It should be noted that, in addition to a portion being located between the circuit board 12 and the middle shell 20, and another portion being located between the circuit board 12 and the middle shell 20, the filler 62 can also be located between the circuit board 12 and the middle shell 20, and in a direction perpendicular to the thickness direction of the image source component 10 (e.g., Figure 11 In the X direction, the projection of the filler 62 overlaps with the projection of the circuit board 12 but does not overlap with the projection of the extension 142.

[0129] like Figures 10 to 12 As shown, the first sealing structure 50 is a sealing element 53. A portion of the filler 62 contacts the extension 142 and the middle shell 20 respectively, and another portion contacts the circuit board 12 and the sealing element 53 respectively, so as to fill the gap between the circuit board 12 and the middle shell 20 and achieve sealing of the circuit board 12 and the middle shell 20.

[0130] In some other implementations, when the first sealing structure 50 is a first labyrinth structure, a portion of the filler 62 contacts the middle shell 20 and the extension 142 respectively, and another portion contacts the middle shell 20 and the circuit board 12 respectively, so as to fill the gap between the circuit board 12 and the middle shell 20 and achieve sealing of the circuit board 12 and the middle shell 20.

[0131] In summary, by filling the gap between the circuit board 12 and the middle shell 20 with the filler 62, or by filling the gap between the circuit board 12 and the sealant 53 with the filler 62, the circuit board 12 and the middle shell 20 can be sealed to meet the dustproof and waterproof requirements.

[0132] In the above description, the image source 10 and the middle shell 20 are sealed by the first sealing structure 50 and the second sealing structure 60. However, other methods can also be used to seal the image source 10 and the middle shell 20.

[0133] Figure 13 This is a schematic diagram of the architecture of the image source component and the middle shell in a third type of optical display provided in this application embodiment.

[0134] Figure 13 and Figure 4 and Figure 11 The difference lies in replacing the first sealing structure 50 and the second sealing structure 60 with an annular seal 70. Specifically, as... Figure 13As shown, the annular seal 70 is disposed between the middle shell 20 and the light-emitting surface 10A of the image source 10 and abuts against the middle shell 20 and the light-emitting surface 10A respectively. The annular seal 70 is connected to the second opening 22. The image source 10 emits an imaging beam toward the viewing window 30 through the interior of the annular seal 70 and the second opening 22.

[0135] By providing an annular seal 70 between the light-emitting surface 10A and the middle shell 20, the annular seal 70 is compressed under the relative action of the image source 10 and the middle shell 20, thereby sealing the gap between the light-emitting surface 10A and the middle shell 20, preventing water, dust and other contaminants from entering the interior of the middle shell 20 through the gap between the light-emitting surface 10A and the middle shell 20, thus improving the display effect.

[0136] The annular seal 70 can be an annular foam component, an annular silicone component, or a gel component formed by dispensing adhesive. Of course, the annular seal 70 can also be made of other materials.

[0137] Image source component 10 includes circuit element 13, light-emitting element 11, circuit board 12, and housing 14. The light-emitting element 11 includes a cover plate layer 112 and a light-emitting layer 111. Circuit element 13 is electrically connected to the light-emitting layer 111 via circuit board 12. The light-emitting element 11 and circuit element are respectively connected to housing 14. Housing 14 is used to connect to middle housing 20, fixing image source component 10 onto middle housing 20.

[0138] like Figure 13 As shown, the cover plate layer 112 is located between the light-emitting layer 111 and the second opening 22, and the surface of the cover plate layer 112 facing the second opening 22 is the light-emitting surface 10A of the image source element 10. Therefore, the annular seal 70 is located between the cover plate layer 112 and the middle shell 20, and abuts against the cover plate layer 112 and the middle shell 20 respectively.

[0139] For example, such as Figure 13 As shown, the inner diameter of the annular seal 70 is larger than the inner diameter of the second opening 22. However, in some implementations, the inner diameter of the annular seal 70 may be smaller than or equal to the inner diameter of the second opening 22, and the outer diameter of the annular seal 70 may be larger than the inner diameter of the second opening 22.

[0140] In some possible implementations, such as Figure 13 As shown, the optical display 300 also includes a second labyrinth structure, which includes an annular portion 24 and a flanged portion 143. The annular portion 24 is disposed on the outer wall of the middle shell 20, the second opening 22 communicates with the interior of the annular portion 24, and the annular seal 7053 is located inside the annular portion 24. The flanged portion 143 is disposed on the image source member 10, along the thickness direction of the image source member 10 (e.g., ...). Figure 13In the X direction, the projection of the flange 143 overlaps with the projection of the annular portion 24. With this configuration, the second labyrinth structure and the annular seal 7053 work together to further improve the sealing effect of the image source 10 and the middle shell 20.

[0141] Specifically, such as Figure 13 As shown, the flange 143 is connected to the housing 14. In addition, the flange 143 and the housing 14 can be an integral structure, which can reduce the number of parts in the optical display 300 and improve the production efficiency of the optical display 300.

[0142] like Figure 13 As shown, the annular portion 24 does not contact the housing 14. However, in some implementations, the annular portion 24 may also contact the housing 14.

[0143] like Figure 13 As shown, the annular portion 24 does not contact the flange portion 143. However, in some implementations, the annular portion 24 may also contact the flange portion 143.

[0144] In some implementations, the flange 143 can be an annular structure, and the flange 143 is fitted onto the outer wall of the housing 14. In other implementations, the flange 143 can also include at least two flange segments, with at least two flange ends arranged circumferentially at intervals along the second opening 22. In other words, the flange 143 can also be an annular structure fitted onto the outer wall of the housing 14 and not closed.

[0145] It should be noted that, in addition to improving the sealing performance of the image source 10 and the middle shell 20 by setting a second labyrinth structure, other methods can also be used.

[0146] Figure 14 This is a schematic diagram of the architecture of the image source component and the middle shell in the fourth type of optical display provided in the embodiments of this application.

[0147] Figure 14 and Figure 13 The difference lies in that the middle shell 20 may have a groove 23, and a second opening 22 penetrates the bottom of the groove 23, connecting the interior of the groove 23 and the interior of the middle shell 20. The annular seal 70 and the cover plate layer 112 are located inside the groove 23, in a direction perpendicular to the thickness direction of the image source element 10 (e.g., Figure 14 In the Y direction, the gap between the cover plate layer 112 and the groove sidewall of the groove 23 is smaller than the gap between the annular seal 70 and the groove sidewall of the groove 23, so that the middle shell 20, the cover plate layer 112 and the annular seal 70 can jointly form a labyrinth M, thereby further improving the sealing performance of the image source 10 and the middle shell 20.

[0148] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0149] The devices or elements referred to in the embodiments of this application or implied herein must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of this application. In the description of the embodiments of this application, "a plurality of" means two or more, unless otherwise precisely specified.

[0150] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the present application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0151] The term "multiple" in this article refers to two or more. The term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. Furthermore, the character " / " in this article generally indicates an "or" relationship between the preceding and following related objects; in formulas, the character " / " indicates a "division" relationship between the preceding and following related objects.

[0152] It is understood that the various numerical designations used in the embodiments of this application are merely for descriptive convenience and are not intended to limit the scope of the embodiments of this application.

[0153] It is understood that, in the embodiments of this application, the order of the above-mentioned process numbers does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

Claims

1. An optical display, characterized in that, Includes a viewing window, a middle shell, an image source, a first sealing structure, and a second sealing structure; The middle shell has a first opening and a second opening. The viewing window is disposed at the first opening. The image source is disposed outside the middle shell. The light-emitting surface of the image source covers the second opening. The light-emitting surface of the image source does not contact the first sealing structure, the second sealing structure, or the middle shell. The image source is used to emit an imaging beam toward the viewing window. The image source component includes an extension and a circuit board. Along the thickness direction of the image source component, the projection of the extension does not overlap with the projection of the circuit board. The first sealing structure is used to seal the gap between the middle shell and the extension, and the second sealing structure is used to seal the gap between the circuit board and the middle shell.

2. The optical display according to claim 1, characterized in that, The first sealing structure is a labyrinth structure, which includes a groove and a protrusion inserted into the groove. One of the groove and the protrusion is disposed in the middle shell and the other is disposed in the extension.

3. The optical display according to claim 2, characterized in that, The groove is disposed on the extension, the protrusion is disposed on the middle shell, the protrusion is an annular structure, and a portion of the circuit board is disposed inside the protrusion. Along a direction perpendicular to the thickness direction of the image source, the projection of the protrusion overlaps with the projection of the circuit board.

4. The optical display according to claim 1, characterized in that, The first sealing structure is a sealing element. Along the thickness direction of the image source element, the sealing element is disposed between the extension and the middle shell and abuts against the extension and the middle shell respectively.

5. The optical display according to claim 4, characterized in that, The seal is an annular structure. Along the thickness direction of the image source, part of the projection of the seal overlaps with the projection of the circuit board, and another part overlaps with the projection of the extension.

6. The optical display according to any one of claims 1 to 5, characterized in that, The second sealing structure includes a cover, a first end of which is connected to the image source and a second end of which is connected to the middle shell. The cover is used to cover the gap between the circuit board and the middle shell.

7. The optical display according to claim 6, characterized in that, The cover does not contact the circuit board.

8. The optical display according to any one of claims 1 to 5, characterized in that, The second sealing structure includes a filler located between the circuit board and the middle shell along the thickness direction of the image source element. The projection of the filler overlaps with the projection of the circuit board, and the filler is used to seal the gap between the circuit board and the middle shell.

9. An optical display, characterized in that, Includes the viewing window, the middle shell, the image source component, and the annular seal; The middle shell has a first opening and a second opening, the window is disposed at the first opening, and the image source is disposed outside the middle shell and covers the second opening; The annular seal is disposed between the middle shell and the light-emitting surface of the image source and abuts against the middle shell and the light-emitting surface respectively. The annular seal communicates with the second opening, and the image source emits an imaging beam toward the window through the interior of the annular seal and the second opening.

10. The optical display according to claim 9, characterized in that, The optical display also includes a second labyrinth structure, which includes a ring-shaped portion and a flanged portion; The annular portion is disposed on the outer wall of the middle shell, the second opening communicates with the interior of the annular portion, and the annular seal is located inside the annular portion; The flanged portion is disposed on the image source component, and the projection of the flanged portion overlaps with the projection of the annular portion along the thickness direction of the image source component.

11. A display device, characterized in that, Including the optical display as described in any one of claims 1 to 10.

12. A means of transportation, characterized in that, Including the optical display as described in any one of claims 1 to 10.

13. The means of transport according to claim 12, characterized in that, The vehicle also includes an instrument panel, on which the optical display is mounted.

14. The means of transport according to claim 12, characterized in that, The vehicle also includes a seat, and the optical display is mounted on the seat.

Images