Optical display, display device and vehicle

Abstract

The embodiment of the utility model 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] The embodiments of the present application relate to the field of display technology, and in particular to an optical display, a display device and a vehicle. Background Art

[0002] Optical display refers to a type of device that uses the principle of optical imaging to obtain a large-screen visual experience in a small space. It can be applied to projectors, head-up displays, vehicle-mounted display screens, car lights and other devices. In the related art, the optical display includes a window piece, an image source screen, a curved mirror and a shell. The shell has a first opening and a second opening. The window piece covers the first opening and is connected to the shell. The image source screen is arranged outside the shell and fixedly connected to the shell. The image source screen covers the second opening. The shell, the window piece and the image source screen together form an optical cavity, and the curved mirror is arranged inside the optical cavity. The image source screen emits an imaging beam toward the window piece through the second opening. The window piece is used to reflect the imaging beam to the curved mirror and to transmit the imaging beam reflected by the curved mirror to the outside of the optical cavity. The curved mirror is used to reflect the imaging beam from the window piece. However, the sealing performance between the image source screen and the shell is poor, which cannot meet the requirements of dustproof and waterproof, and will reduce the display effect. Utility Model Content

[0003] The embodiments of the present application provide an optical display, a display device and a vehicle, which can meet the requirements of dust and water resistance and improve the display effect.

[0004] The first aspect of the present application provides an optical display, comprising a window member, a middle shell, an image source member, a first sealing structure, and a second sealing structure. The middle shell has a first opening and a second opening, the window member is arranged at the first opening, the light-emitting surface of the image source member covers the second opening, the light-emitting surface of the image source member is not in contact with the first sealing structure, the second sealing structure, and the middle shell, and the image source member is used to emit an imaging light beam toward the window member. The image source member comprises an extension portion and a circuit board, and along the thickness direction of the image source member, the projection of the extension portion 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 portion, and the second sealing structure is used to seal the gap between the circuit board and the middle shell.

[0005] The gap between the extension part and the middle shell is sealed by the first sealing structure, and the gap between the circuit board and the middle shell is sealed by the second sealing structure, so as to seal the gap between the image source component and the middle shell, meet the dust and water resistance requirements, and improve the display effect. At the same time, the first sealing structure, the second sealing structure and the middle shell are not in contact with the light emitting surface of the image source component, which can avoid deformation of the light emitting surface and ensure the display effect.

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

[0007] In this way, the extension part and the middle shell can seal the gap between the extension part and the middle shell through the first labyrinth structure, so as to prevent dust, water, etc. from entering the inside of the middle shell from the gap between the extension part and the middle shell, and meet the dust and water resistance requirements. At the same time, the protrusion is inserted into the groove part, so that the first sealing structure has a smaller size in the thickness direction of the image source component, which can reduce the gap between the image source component and the middle shell, and contribute to the miniaturization of the optical display.

[0008] In a possible embodiment, the groove portion is arranged on the extension portion, the protrusion portion is arranged on the middle shell, the protrusion portion is a ring-shaped structure, part of the circuit board is arranged inside the protrusion portion, and along the direction perpendicular to the thickness direction of the image source component, the projection of the protrusion partially overlaps with the projection of the circuit board.

[0009] In this way, the raised portion can seal a portion of the gap between the circuit board and the middle shell, and can block some dust, water, etc., and combined with the second sealing structure, the sealing performance between the circuit board and the middle shell can be further improved.

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

[0011] In this way, the seal is clamped between the middle shell and the extension part. When the seal is deformed, it can be in close contact with the extension part and the middle shell, thereby sealing the gap between the extension part and the middle shell, preventing dust, water, etc. from entering the interior of the middle shell through the gap between the extension part and the middle shell, thereby meeting the dustproof and waterproof requirements.

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

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

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

[0015] In this way, dust, water and the like can be prevented from entering the interior of the middle shell through the gap between the circuit board and the middle shell, thereby meeting the dust and water proof requirements.

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

[0017] In this way, the covering member is spaced apart from the circuit board, and the covering member does not exert force on the circuit board, thereby avoiding damage to the circuit board.

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

[0019] In this way, dust, water and the like can be prevented from entering the interior of the middle shell through the gap between the circuit board and the middle shell, thereby meeting the dust and water proof requirements.

[0020] The second aspect of the present application provides an optical display, comprising a window member, a middle shell, an image source member and an annular seal. The middle shell has a first opening and a second opening, the window member is arranged at the first opening, and the image source member is arranged outside the middle shell and covers the second opening. The annular seal is arranged between the middle shell and the light-emitting surface of the image source member and abuts against the middle shell and the light-emitting surface respectively, the annular seal is connected to the second opening, and the image source member emits an imaging light beam toward the window member through the inside of the annular seal and the second opening.

[0021] By providing 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, thereby preventing water, dust, etc. from entering the interior of the middle shell through the gap between the light emitting surface and the middle shell, thereby improving the display effect.

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

[0023] In this way, the second labyrinth structure is combined with the annular sealing element to further improve the sealing performance between the image source element and the middle shell.

[0024] A third aspect of the present application provides a display device, comprising an optical display as described in any one of the first aspect or the second aspect.

[0025] A fourth aspect of the present application provides a vehicle comprising an optical display as described in any one of the first aspect or the second aspect.

[0026] In a possible implementation, the vehicle further includes a dashboard, and the optical display is mounted on the dashboard.

[0027] In a possible implementation manner, the vehicle further includes a seat, and the optical display is mounted on the seat. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0029] Figure 2 A schematic diagram of the structure of a vehicle provided in an embodiment of the present application;

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

[0031] Figure 4 for Figure 3 The enlarged schematic diagram of point B in the middle;

[0032] Figure 5 for Figure 3 Schematic diagram of the architecture of the middle shell and image source components;

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

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

[0035] Figure 8 for Figure 6 A schematic cross-sectional view of a housing having a groove portion;

[0036] Fig. 9 A schematic diagram of the structure of the image source component and the middle shell in the second optical display provided in an embodiment of the present application;

[0037] Fig.10 for Fig. 9 The enlarged schematic diagram of K in the middle;

[0038] Fig.11 for Fig. 9 Schematic diagram of the cross section at AA in the middle;

[0039] Fig.12 for Fig. 9 Schematic diagram of the cross section at the middle BB;

[0040] Fig.13 A schematic diagram of the structure of the image source component and the middle shell in the third optical display provided in an embodiment of the present application;

[0041] Fig.14 A schematic diagram of the structure of the image source component and the middle shell in the fourth optical display provided in an embodiment of the present application.

[0042] Description of reference numerals:

[0043] 100. Means of transportation;

[0044] 200. Vehicle entity;

[0045] 300. Optical display;

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

[0047] 11. light emitting element; 111. light emitting layer; 112. cover layer;

[0048] 12. Circuit board;

[0049] 13. Circuit components;

[0050] 14. Shell; 141. Main body; 142. Extension; 143. Flanging;

[0051] 20. middle shell; 21. first opening; 22. second opening; 23. groove; 24. annular portion;

[0052] 30. Window parts;

[0053] 40. Curved mirror;

[0054] 50. first sealing structure; 51. groove portion; 52. raised portion; 53. sealing member;

[0055] 60. Second sealing structure; 61. Covering member; 62. Filling member;

[0056] 70. Annular seal;

[0057] A, optical cavity; M, maze. DETAILED DESCRIPTION

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

[0059] In the related art, see Figure 1As shown, the optical display 101 includes a window member 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 window member 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 window member 102 and the image source screen 103 together form an optical cavity 106, and the curved mirror 104 is disposed inside the optical cavity 106. The image source screen 103 is used to emit an imaging light beam toward the window member 102, the window member 102 is used to reflect the imaging light beam to the curved mirror 104 and to transmit the imaging light beam reflected by the curved mirror 104 to the outside of the optical cavity 106, and the curved mirror 104 is used to reflect the imaging light beam from the window member 102.

[0060] Continue to see 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, which cannot meet the dustproof and waterproof requirements, and will reduce the display effect. Therefore, how to improve the sealing performance between the image source screen 103 and the housing 105 becomes a problem to be solved urgently.

[0061] In view of this, the embodiments of the present 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 through an annular seal 70, or seals the gap between the middle shell 20 and the image source component 10 through a first sealing structure 50 and a second sealing structure 60, thereby improving the sealing performance between the image source component 10 and the middle shell 20, meeting the dust and water resistance requirements, and improving the display effect.

[0062] The vehicle 100 provided in the embodiment of the present application may include but is not limited to known vehicles 100 such as cars, airplanes, ships, trains, etc. In addition, the vehicle 100 provided in the embodiment of the present application may also be a new vehicle 100 that will appear in the future.

[0063] The car may be an electric car, a fuel car or a hybrid car, such as a pure electric car, an extended-range electric car, a new energy car, a fuel cell car, a hybrid electric car, etc. For example, in the embodiment of the present application, the car is taken as the above-mentioned transportation tool 100 for explanation.

[0064] Figure 2 A schematic diagram of the structure of a vehicle provided in an embodiment of the present application.

[0065] See also Figure 2As shown, the vehicle 100 includes a vehicle body 200 and an optical display 300. The optical display 300 is installed on the vehicle body 200. The vehicle body 200 includes seats, a dashboard and vehicle lights.

[0066] Exemplarily, the optical display 300 is installed in the instrument panel, and the optical display 300 is located in front of the co-pilot position. Of course, the optical display 300 can also be installed in other positions, such as a seat. In some implementations, the optical display 300 can be installed on the headrest of the seat. In other implementations, the optical display 300 can be installed on the seat body of the seat. In still other implementations, the optical display 300 can be installed on both the headrest and the seat body of the seat.

[0067] It should be noted that the optical display 300 provided in the embodiment of the present application can be applied to other devices in addition to being applied to the vehicle 100. In some implementations, the optical display 300 can also be applied to display devices such as head-up display (HUD), projector, television, near eye display (NED) device, etc.

[0068] The specific type of the NED device is not limited here, for example, it may be an AR device or a VR device, the AR device may include but is not limited to AR glasses or an AR helmet, and the VR device may include but is not limited to VR glasses or a VR helmet.

[0069] Among them, the types of HUD include but are not limited to windshield (W)-HUD, augmented reality head-up display (AR-HUD), etc.

[0070] In some other implementations, the optical display 300 may also be used in medical equipment, office entertainment equipment, industrial control equipment, and the like, without specific limitation herein.

[0071] The implementation method of the optical display 300 provided in the embodiment of the present application is described below.

[0072] Figure 3 A cross-sectional schematic diagram of a first optical display provided in an embodiment of the present application, Figure 4 for Figure 3 A magnified schematic diagram of point B in the middle.

[0073] See also Figure 3As shown, the optical display 300 includes a window member 30, a middle shell 20, a curved mirror 40 and an image source member 10. The middle shell 20 has a first opening 21 and a second opening 22, and the window member 30 is arranged at the first opening 21. The image source member 10 is arranged outside the middle shell 20, and the light emitting surface 10A of the image source member 10 covers the second opening 22, and the light emitting surface 10A of the image source member 10 does not contact the middle shell 20. The image source member 10, the middle shell 20 and the window member 30 together form an optical cavity A, and the first opening 21 and the second opening 22 are respectively connected to the optical cavity A. The curved mirror 40 is arranged inside the optical cavity A and is used to reflect the imaging light beam. The image source member 10 is used to emit the imaging light beam toward the inside of the optical cavity A through the second opening 22. The window member 30 is used to reflect the imaging light beam emitted by the image source member 10 to the curved mirror 40, and is used to transmit the imaging light beam from the curved mirror 40 to the outside of the optical cavity A.

[0074] See also Figure 3 As shown, during the operation of the optical display 300, the image source element 10 emits an imaging light beam (such as Figure 3 The inner surface of the window member 30 reflects the imaging light beam to the surface of the curved mirror 40, and the curved mirror 40 reflects the imaging light beam to the inner surface of the window member 30. The imaging light beam reflected by the curved mirror 40 passes through the inner surface of the window member 30 and is emitted from the outer surface of the window member 30 to the outside of the optical cavity A. The imaging light beam outside the optical cavity A will enter the eye, and the eye can see a magnified virtual image.

[0075] The virtual image can be viewed by the eye without being received by a light screen. Figure 3 As shown, the image source 10 emits an imaging light beam with a certain divergence angle, which enters the eye after being reflected by the window 30 and the curved mirror 40. The brain will trace the light beam in reverse based on the experience that "light travels in a straight line" and consider the intersection of the imaging light beam with the reverse extension as the object point, that is, the virtual image point. The position of the eye can be called the eyebox position. Figure 3 As shown, the imaging light beam includes an imaging light beam L1 and an imaging light beam L2 , and the two imaging light beams limit 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 a schematic diagram, and other optical path schemes are also possible to achieve virtual image display, which are not described here one by one.

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

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

[0079] The image source device 10 may adopt liquid crystal display (LCD) imaging technology, digital light processing (DLP) technology, laser scanning projection, etc. For example, the image source device 10 may 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 systems (MEMS) image source device.

[0080] For example, 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 shell 14. The shell 14 is used to be fixedly connected to the middle shell 20 to fix the image source device 10 on the middle shell 20. The circuit element 13 is mounted on the first end of the shell 14, and the light emitting element 11 is mounted on the second end of the shell 14. The light emitting element 11 is located at the second opening 22 and covers 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, so that the light emitting element 11 emits an imaging light beam according to the image signal.

[0081] Figure 5 for Figure 3 The schematic diagram of the architecture of the middle shell and the image source components. Figure 6 for Figure 5 Schematic diagram of the cross section at AA in the middle. Figure 7 for Figure 5 Schematic diagram of the cross section at BB in the middle.

[0082] See also Figures 4 to 6As shown, the circuit element 13 is arranged on the outer surface of the shell, the light-emitting element 11 is arranged on the inner surface of the shell, and a relief notch for evading the circuit board 12 is provided on the side of the shell 14 facing the middle shell 20, so that part of the side wall of the light-emitting element 11 is exposed and electrically connected to the circuit board 12, so that part of the circuit board 12 is located inside the shell 14 and the other part is located outside the shell 14, and then 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 stacked cover layer 112 and a light emitting layer 111. The light emitting layer 111 is electrically connected to the circuit element 13 through the circuit board 12, and is used to emit an imaging light beam. The cover layer 112 is arranged 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 layer 112 overlaps with the projection of the light emitting layer 111. The cover layer 112 is used to protect the light emitting layer 111, and the cover layer 112 can transmit the imaging light beam to the inside of the optical cavity A.

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

[0085] In order to ensure that the imaging light beam passes through the cover layer 112, the cover layer 112 is usually made of a light-transmitting material, for example, the cover layer 112 can be a glass layer. Of course, the cover layer 112 can also be made of other materials, which will not be described here one by one.

[0086] In order to avoid deformation of the cover layer 112 and reduce the display effect, Figure 6 or Figure 7 As shown, the cover layer 112 is not in contact with the middle shell 20. In other words, the cover layer 112 is spaced apart from the middle shell 20. Thus, during the process of connecting the image source component 10 to the middle shell 20, the cover layer 112 will not be subjected to stress and will not be deformed, thereby ensuring the display effect.

[0087] It is understandable that if Figure 4 As shown, the surface of the cover layer 112 facing the middle shell 20 is the light emitting surface 10A of the image source component 10 . The light emitting surface 10A of the image source component 10 is not in contact with the middle shell 20 , thereby ensuring the display effect of the optical display 300 .

[0088] For example, Figure 4 , Figure 6 and Figure 7As shown, the housing 14 includes an extension portion 142 and a main body portion 141. The main body portion 141 is used to be fixedly connected to the middle housing 20, connect the image source component 10 to the middle housing 20, and is used to carry 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 portion 142 does not overlap with the projection of the circuit board 12, and there is a gap between the extension portion 142 and the middle housing 20.

[0089] It is understandable that the extension portion 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 portion 142 .

[0090] It should be noted that the avoidance notch mentioned above is arranged 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 the dust and water resistance 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. The first sealing structure 50 and the second sealing structure 60 are both not in contact with the light emitting surface 10A of the image source component 10. The first sealing structure 50 is used to seal the gap between the middle shell 20 and the extension portion 142, and the second sealing structure 60 is used to seal the gap between the circuit board 12 and the middle shell 20.

[0092] The gap between the extension part 142 and the middle shell 20 is sealed by the first sealing structure 50, and the gap between the circuit board 12 and the middle shell 20 is sealed by the second sealing structure 60, so as to achieve the sealing of the gap between the image source component 10 and the middle shell 20, meet the dustproof and waterproof requirements, and improve 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, so as to avoid deformation of the light emitting surface 10A and ensure the display effect.

[0093] For example, Figure 4 , Figure 6 and Figure 7 As shown, the first sealing structure 50 is a first labyrinth structure, which includes a groove portion 51 and a protrusion portion 52 inserted in the groove portion 41 , one of the groove portion 51 and the protrusion portion 52 is arranged in the middle shell 20 , and the other is arranged in the extension portion 142 .

[0094] In this way, the extension part 142 and the middle shell 20 can seal the gap between the extension part 142 and the middle shell 20 through the first labyrinth structure, so as to prevent dust, water, etc. from entering the inside of the middle shell 20 from the gap between the extension part 142 and the middle shell 20, and meet the dust and water resistance requirements. At the same time, the protrusion 52 is inserted into the groove part 51, so that the first sealing structure 50 has a smaller size in the thickness direction of the image source part 10, which can reduce the gap between the image source part 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 portion 51, the top surface of the protrusion 52 abuts against the bottom of the groove portion 51, and the side wall of the protrusion 52 contacts one of the side walls of the groove, so that there is no gap between the protrusion 52 and the inner wall of the groove portion 51, thereby sealing the gap between the extension portion 142 and the middle shell 20.

[0096] In 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 groove sidewall of the groove, and the gap between the extension 142 and the middle shell 20 may also be sealed.

[0097] In some other implementations, when the protrusion 52 is inserted into the interior of the groove 51, the protrusion 52 may not contact the inner wall of the groove 51. At this time, the extension portion 142 is tightly fitted against the surface of the middle shell 20 along the thickness direction of the image source component 10 toward the middle shell 20, and the extension portion 142 and the middle shell 20 can also be sealed.

[0098] In summary, when the protrusion 52 is inserted into the groove 51, the protrusion 52 is at least tightly fitted with the groove bottom or the groove side wall of the groove 51, or the surface of the extension 142 facing the middle shell 20 is tightly fitted with the middle shell 20, and the gap between the extension 142 and the middle shell 20 can be sealed to achieve dustproof and waterproof.

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

[0100] The groove portion 51 can be provided in the extension portion 142 or the middle shell 20 to seal the gap between the extension portion 142 and the middle shell 20. However, providing the groove portion 51 in the extension portion 142 can reduce the difficulty of modeling 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 schematic cross-sectional view of a shell having a groove portion.

[0102] See also Figure 8 As shown, the extension portion 142 is an annular structure with a notch, and part of the circuit board 12 is disposed in the notch of the extension portion 142 . Therefore, the groove portion 51 is a disconnected annular groove disposed around the second opening 22 .

[0103] In some implementations, the protrusion 52 is an annular structure, and part of the circuit board 12 is disposed inside the protrusion 52, along a direction perpendicular to the thickness direction of the image source device 10 (eg Figure 4 The projection of the protrusion 52 partially overlaps with the projection of the circuit board 12 (in the Y direction).

[0104] In this way, the raised portion 52 can seal a portion of the gap between the circuit board 12 and the middle shell 20 , and can block some dust, water, etc., and combined with the second sealing structure 60 , 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 groove portion 51, and the other portion is arranged in the notch of the extension portion 142. The protrusion 52 cooperates with the groove portion 51 to seal the gap between the extension portion 142 and the middle shell 20 on the one hand, and can seal part of the gap between the circuit board 12 and the middle shell 20 on the other hand.

[0106] Exemplarily, 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, and on the other hand, the sealing performance between the middle shell 20 and the protrusion 52 can be improved.

[0107] Exemplarily, the cross section of the groove portion 51 may be U-shaped, and the cross section of the groove portion 51 is parallel to the thickness direction of the image source device 10. However, in some implementations, the cross section of the groove portion 51 may also be V-shaped or W-shaped. When the cross section of the groove portion 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 inside of the groove portion 51. The cross section of the protrusion 52 is parallel to the thickness direction of the image source device 10.

[0108] It should be noted that, in addition to the first labyrinth structure, the first sealing structure 50 may also be other structures.

[0109] Fig. 9 This is a schematic diagram of the structure of the image source component and the middle shell in the second optical display provided by the embodiment of the present application. Fig.10 for Fig. 9 The enlarged schematic diagram of K in the middle. Fig.11 for Fig. 9 Schematic diagram of the cross section at AA in the middle. Fig.12 for Fig. 9 Schematic diagram of the cross section at BB in the middle.

[0110] Fig. 9 and Figure 5 The difference is that the first sealing structure 50 is different. Figures 9 to 12 As shown, the first sealing structure 50 is a sealing member 53, which is disposed between the extension portion 142 and the middle shell 20 and respectively abuts against the extension portion 142 and the middle shell 20. By sandwiching the sealing member 53 between the middle shell 20 and the extension portion 142, the sealing member 53 can be in close contact with the extension portion 142 and the middle shell 20 while elastically deforming, thereby sealing the gap between the extension portion 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 portion 142 and the middle shell 20, and meeting the dust and water resistance requirements.

[0111] The sealing member 53 may be a foam member or a silicone member, etc., which is not specifically limited here.

[0112] Exemplarily, the sealing member 53 is an annular structure, extending in the thickness direction of the image source member 10 (eg Fig.11 In the middle 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 portion 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 portion 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, and can block some dust, water, etc., and 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, Fig.11 or Fig.12 As shown, the inner diameter of the sealing member 53 is larger than the inner diameter of the second opening 22, ensuring that the image source member 10 can emit an imaging light beam toward the window member 30 through the interior of the sealing member 53 and the second opening 22. However, the inner diameter of the sealing member 53 may also be equal to or smaller than the inner diameter of the second opening 22, so that the imaging light beam emitted by the image source member 10 can be emitted toward the window member 30.

[0115] In some implementations, the seal 53 may also be an annular structure with a notch, in which case, along the thickness direction of the image source component 10, a portion of the projection of the seal 43 overlaps with the projection of the extension portion 142, and another portion overlaps with a portion of the projection of the circuit board 12, or the projection of the seal 43 overlaps with the projection of the extension portion 142 and does not overlap with the projection of the circuit board 12. The notch of the seal 53 is connected to the notch of the extension portion 142, so 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 component 10.

[0116] For example, see Figures 4 to 6 As shown, the second sealing structure 60 includes a cover 61, a first end of the cover 61 is connected to the image source 10, a second end of the cover 61 is connected to the middle shell 20, and the cover 61 is used to cover 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 from the gap between the circuit board 12 and the middle shell 20, and dust and water resistance requirements can be met.

[0117] The material of the cover 61 needs to meet the requirements of waterproof and dustproof, and no specific limitation is given here. For example, the cover 61 can be a waterproof film, a polyethylene film, etc.

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

[0119] For example, along a direction perpendicular to the thickness direction of the image source element 10 (eg Figure 4 The projection of the cover 61 covers a portion of the projection of the circuit board 12. In some implementations, the projection of the cover 61 covers a portion of the projection of the circuit board 12 along a direction perpendicular to the thickness direction of the image source element 10 (e.g. 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, and the projection of the protrusion 52 covers a part of the gap between the circuit board 12 and the middle shell 20 along the direction perpendicular to the vertical direction of the image source 10. Therefore, along the direction perpendicular to the vertical direction of the image source 10, the projection of the cover 61 covers the gap between the circuit board 12 and the protrusion 52, and can cover the gap between the circuit board 12 and the middle shell 20, so as to achieve sealing of 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 device 10, a portion of the seal 53 is located between the extension portion 142 and the middle shell 20, and another portion is located between the circuit board 12 and the middle shell 20, and the projection of the seal 53 overlaps with the projection of the extension portion 142 and the projection of the circuit board 12. Along the direction perpendicular to the thickness direction of the image source device 10, the projection of the cover 61 overlaps with the projection of the seal 53 and the projection of the circuit board 12. Therefore, the cover 61 covers the gap between the seal 53 and the circuit board 12 to achieve sealing of the circuit board 12 and the middle shell 20.

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

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

[0124] It should be noted that, in addition to the covering member 61 , the second sealing structure 60 may also be other structures.

[0125] In some other possible implementations, such as Figures 10 to 12 As shown, the second sealing structure 60 includes a filling member 62, which is provided along the thickness direction of the image source element 10 (eg Fig.11 In the X direction, the filler 62 is located between the circuit board 12 and the middle shell 20, and 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 from the gap between the circuit board 12 and the middle shell 20, and dust and water resistance requirements can be met.

[0126] The filling member 62 may be a plastic member or a colloid member, etc., which is not limited here. The colloid member may be understood as a structure formed by dispensing glue between the extension portion 142 and the middle shell 20 in a dispensing manner.

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

[0128] It should be noted that, in addition to a portion of the filler 62 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 may also be located between the circuit board 12 and the middle shell 20 and along a direction perpendicular to the thickness direction of the image source element 10 (e.g. Fig.11 In the X direction), the projection of the filling member 62 partially overlaps with the projection of the circuit board 12 and does not overlap with the projection of the extension portion 142.

[0129] like Figures 10 to 12 As shown, the first sealing structure 50 is a sealing member 53, a portion of the filling member 62 is in contact with the extension portion 142 and the middle shell 20 respectively, and another portion is in contact with the circuit board 12 and the sealing member 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 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 portion 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, thereby achieving 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 seal 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 content, the image source component 10 and the middle shell 20 are sealed by the first sealing structure 50 and the second sealing structure 60, but the image source component 10 and the middle shell 20 may also be sealed by other methods.

[0133] Fig.13 A schematic diagram of the architecture of the cooperation between the image source component and the middle shell in the third optical display provided in an embodiment of the present application.

[0134] Fig.13 and Figure 4 and Fig.11 The difference is that the first sealing structure 50 and the second sealing structure 60 are replaced by an annular sealing member 70. Specifically, Fig.13As shown, the annular seal 70 is disposed between the middle shell 20 and the light emitting surface 10A of the image source component 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 component 10 emits an imaging light beam toward the window component 30 through the interior of the annular seal 70 and the second opening 22.

[0135] By disposing 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 element 10 and the middle shell 20, so as to seal the gap between the light emitting surface 10A and the middle shell 20, thereby preventing water, dust, etc. from entering the interior of the middle shell 20 through the gap between the light emitting surface 10A and the middle shell 20, thereby improving the display effect.

[0136] The annular sealing member 70 may be an annular foam member, an annular silicone member, or a colloid member formed by dispensing glue, etc. Of course, the material of the annular sealing member 70 may also be other materials.

[0137] The image source device 10 includes a circuit element 13, a light emitting element 11, a circuit board 12 and a housing 14. The light emitting element 11 includes a cover layer 112 and a light emitting layer 111. The circuit element 13 is electrically connected to the light emitting layer 111 through the circuit board 12. The light emitting element 11 and the circuit element are connected to the housing 14 respectively. The housing 14 is used to connect to the middle housing 20 to fix the image source device 10 on the middle housing 20.

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

[0139] For example, Fig.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 Fig.13 As shown, the optical display 300 further includes a second labyrinth structure, which includes an annular portion 24 and a flange portion 143. The annular portion 24 is disposed on the outer wall of the middle shell 20, the second opening 22 is connected to the inside of the annular portion 24, and the annular seal 7053 is located inside the annular portion 24. The flange portion 143 is disposed on the image source element 10, and is disposed along the thickness direction of the image source element 10 (such as Fig.13In the X direction), the projection of the flange portion 143 overlaps with the projection of the annular portion 24. In this way, the second labyrinth structure cooperates with the annular seal 7053 to further improve the sealing effect of the image source element 10 and the middle shell 20.

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

[0142] like Fig.13 As shown, the annular portion 24 is not in contact with the housing 14. However, in some implementations, the annular portion 24 may also be in contact with the housing 14.

[0143] like Fig.13 As shown, the annular portion 24 is not in contact with the flange portion 143. However, in some implementations, the annular portion 24 may also be in contact with the flange portion 143.

[0144] In some implementations, the flange portion 143 may be an annular structure, and the flange portion 143 is sleeved on the outer wall of the housing 14. In other implementations, the flange portion 143 may also include at least two flange segments, and at least two flange ends are arranged at intervals along the circumference of the second opening 22. In other words, the flange portion 143 may also be an annular structure sleeved on 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 component 10 and the middle shell 20 by providing the second labyrinth structure, other methods may also be used.

[0146] Fig.14 A schematic diagram of the structure of the image source component and the middle shell in the fourth optical display provided in an embodiment of the present application.

[0147] Fig.14 and Fig.13 The difference is that the middle shell 20 may have a groove 23, the second opening 22 passes through the bottom of the groove 23, and the second opening 22 communicates the inside of the groove 23 and the inside of the middle shell 20. The annular seal 70 and the cover layer 112 are located inside the groove 23, along a direction perpendicular to the thickness direction of the image source element 10 (such as Fig.14 In the middle Y direction), the gap between the cover layer 112 and the groove side wall of the groove 23 is smaller than the gap between the annular seal 70 and the groove side wall of the groove 23, so that the middle shell 20, the cover layer 112 and the annular seal 70 can form a maze M together, thereby further improving the sealing performance of the image source component 10 and the middle shell 20.

[0148] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0149] In the embodiments of the present application, the devices or elements referred to or implied must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise precisely and specifically specified.

[0150] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the embodiments of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0151] The term "plurality" in this article refers to two or more than two. The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the previous and next associated objects are in an "or" relationship; in a formula, the character " / " indicates that the previous and next associated objects are in a "division" relationship.

[0152] It should be understood that the various numerical numbers involved in the embodiments of the present application are only used for the convenience of description and are not used to limit the scope of the embodiments of the present application.

[0153] It can be understood that in the embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean 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 the present application.

Claims

1. An optical display, characterized in that: It includes a window component, a middle shell, an image source component, a first sealing structure and a second sealing structure; The middle shell has a first opening and a second opening, the window member is arranged at the first opening, the image source member is arranged outside the middle shell, the light emitting surface of the image source member covers the second opening, the light emitting surface of the image source member is not in contact with the first sealing structure, the second sealing structure and the middle shell, and the image source member is used to emit an imaging light beam toward the window member; The image source component includes an extension portion and a circuit board. Along the thickness direction of the image source component, the projection of the extension portion 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 portion, 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 portion and a protrusion portion inserted in the groove portion, wherein one of the groove portion and the protrusion portion is arranged on the middle shell, and the other is arranged on the extension portion.

3. The optical display according to claim 2, characterized in that The groove portion is arranged on the extension portion, the protrusion portion is arranged on the middle shell, the protrusion portion is a ring-shaped structure, part of the circuit board is arranged inside the protrusion portion, and along the direction perpendicular to the thickness direction of the image source component, the projection of the protrusion partially 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 member, and along the thickness direction of the image source member, the sealing member is disposed between the extension portion and the middle shell and abuts against the extension portion and the middle shell respectively.

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

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

7. The optical display according to claim 6, characterized in that The cover member 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 filling piece, which is located between the circuit board and the middle shell along the thickness direction of the image source component, and the projection of the filling piece overlaps with the projection of the circuit board. The filling piece is used to seal the gap between the circuit board and the middle shell.

9. An optical display, characterized in that: It includes a window part, a middle shell, an image source part and an annular sealing part; The middle shell has a first opening and a second opening, the window member is arranged at the first opening, and the image source member is arranged outside the middle shell and covers the second opening; The annular seal is arranged between the middle shell and the light emitting surface of the image source component and abuts against the middle shell and the light emitting surface respectively. The annular seal is connected to the second opening. The image source component emits an imaging light beam toward the window component 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 further comprises a second labyrinth structure, wherein the second labyrinth structure comprises an annular portion and a flange portion; The annular portion is arranged on the outer wall of the middle shell, the second opening is communicated with the interior of the annular portion, and the annular seal is located inside the annular portion; The flange portion is arranged on the image source component, and along the thickness direction of the image source component, the projection of the flange portion overlaps with the projection of the annular portion.

11. A display device, characterized in that: Comprising the optical display according to any one of claims 1 to 10.

12. A means of transport, characterized in that: Comprising the optical display according to any one of claims 1 to 10.

13. The vehicle according to claim 12, characterized in that: The vehicle further comprises a dashboard, and the optical display is mounted on the dashboard.

14. The vehicle according to claim 12, characterized in that: The vehicle further comprises a seat, and the optical display is mounted on the seat.

Images