Head-mounted display apparatus and control method therefor, and movable platform system

Abstract

A head-mounted display apparatus (100) and a control method therefor, and a movable platform system (200). The head-mounted display apparatus (100) comprises a housing (10), a first display assembly (20) and a control assembly (30), wherein the housing (10) is provided with an electrical cavity (10a); the first display assembly (20) is at least partially arranged in the electrical cavity (10a); the control assembly (30) is configured to control the first display assembly (20) to display an image; and the control assembly (30) is arranged in the electrical cavity (10a), and is at least partially located on one side of the first display (20) assembly in a first direction, the first direction being a direction facing away from the face of a wearer, and / or the first direction being the front direction of the head-mounted display apparatus (100).

Description

Head-mounted display device, control method thereof, and movable platform system

[0001] Cross-reference to related applications

[0002] The present disclosure is based on a PCT application with the application number PCT / CN2024 / 117245 and the filing date of September 5, 2024, and claims priority to the above PCT application, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0003] Embodiments of the present disclosure relate to the technical field of display devices, and in particular to a head-mounted display device, a control method thereof, and a movable platform system. BACKGROUND

[0004] A head-mounted display device is a device that can be worn on the head of a wearer and can at least display images to the eyes of the wearer. In the related art, head-mounted display devices have the problems of small display interface size, poor wearing comfort, and the like, which affect the use experience of the wearer. SUMMARY

[0005] In view of this, embodiments of the present disclosure aim to provide a head-mounted display device that can improve the use experience of the wearer.

[0006] A first aspect of embodiments of the present disclosure provides a head-mounted display device, comprising: a housing having an electrical cavity; a first display assembly at least partially disposed in the electrical cavity; and a control assembly configured to control the first display assembly to display images, the control assembly being disposed in the electrical cavity and at least partially located on one side of the first display assembly in a first direction, the first direction being a direction away from the face of the wearer; and / or, the first direction being the front of the head-mounted display device. In the head-mounted display device of the present embodiment, by at least partially disposing the control assembly on one side of the first display assembly in the first direction, the occupation of the control assembly on the space on both sides of the first display assembly in the height direction of the head-mounted display device and / or on the space on both sides of the first display assembly in the width direction is reduced, so that a larger size of the first display assembly can be arranged under the same size of the housing, and the use experience of the wearer is improved.

[0007] A second aspect of embodiments of the present disclosure provides a movable platform system, comprising: the head-mounted display device of the first aspect of embodiments of the present disclosure; and a movable platform carrying a photographing device, wherein images photographed by the photographing device can be transmitted to the first display assembly for display.

[0008] A third aspect of the embodiments of the present disclosure provides a head-mounted display device, comprising: a device body comprising a plurality of outer surfaces and an inner surface facing a wearer's face; a first display component having a first view window exposed to the inner surface; a second display component having a second view window exposed to at least one of the outer surfaces; and an interaction component configured to receive an interaction instruction for controlling a display state of the first display component and / or the second display component.

[0009] A fourth aspect of the embodiments of the present disclosure provides a movable platform system, comprising: the head-mounted display device of the third aspect of the embodiments of the present disclosure; and a movable platform carrying a photographing device, wherein an image captured by the photographing device can be transmitted to the first display component and / or the second display component for display.

[0010] A fifth aspect of the embodiments of the present disclosure provides a control method of a head-mounted display device, the head-mounted display device comprising a device body, a first display component, a second display component and an interaction component, the device body comprising a plurality of outer surfaces and an inner surface facing a wearer's face; the first display component having a first view window exposed to the inner surface; the second display component having a second view window exposed to at least one of the outer surfaces; the method comprising: determining a display mode of the head-mounted display device in response to an interaction instruction received by the interaction component; and controlling a display state of the first display component and / or the second display component based on the display mode.

[0011] A sixth aspect of the embodiments of the present disclosure provides a head-mounted display device, further comprising a processor and a memory for storing a computer program capable of running on the processor, wherein the processor is configured to execute the steps of the method of the fifth aspect of the embodiments of the present disclosure when running the computer program.

[0012] A seventh aspect of the embodiments of the present disclosure provides a head-mounted display device, comprising: a housing having an electrical cavity, and an air inlet and an air outlet in communication with the electrical cavity; and a cooling fan disposed in the electrical cavity and configured to drive air flow from the air inlet to the air outlet, wherein an opening direction of the air outlet is set towards a first direction, or an opening direction of the air outlet is inclined towards the first direction compared to a first reference plane, the first direction being a direction away from a wearer's face, and the first reference plane being perpendicular to the first direction.

[0013] An eighth aspect of the embodiments of the present disclosure provides a head-mounted display device, comprising: a housing having an electrical cavity, and an air inlet and an air outlet in communication with the electrical cavity; and a cooling fan disposed in the electrical cavity and configured to drive air flow from the air inlet to the air outlet, wherein the housing comprises two view regions distributed along a width direction of the head-mounted display device, and the air outlet is located between the two view regions along the width direction.

[0014] A ninth aspect of the embodiments of the present disclosure provides a head-mounted display device, comprising: a housing having an electrical cavity, and an air outlet and a plurality of air inlets in communication with the electrical cavity; and a cooling fan disposed in the electrical cavity and configured to drive air flow from the plurality of air inlets to the air outlet, wherein the plurality of air inlets are distributed on opposite sides of the air outlet along a width direction of the head-mounted display device. BRIEF DESCRIPTION OF DRAWINGS

[0015] FIG. 1 is a schematic view of an axial side of a head-mounted display device according to an embodiment of the present disclosure;

[0016] FIG. 2 is an exploded schematic view of the head-mounted display device according to an embodiment of the present disclosure;

[0017] FIG. 3 is a schematic view of an axial side of the head-mounted display device according to an embodiment of the present disclosure from another perspective;

[0018] FIG. 4 is a schematic view of the head-mounted display device according to an embodiment of the present disclosure as viewed along a first direction, wherein a mask is hidden;

[0019] FIG. 5 is a schematic view of a section A-A of the head-mounted display device according to an embodiment of the present disclosure;

[0020] FIG. 6 is a schematic view of a section B-B of the head-mounted display device according to an embodiment of the present disclosure;

[0021] FIG. 7 is a schematic view of a section C-C of the head-mounted display device according to an embodiment of the present disclosure;

[0022] FIG. 8 is a schematic view of a control assembly according to an embodiment of the present disclosure from a side facing a cooling fan;

[0023] FIG. 9 is a schematic view of the control assembly according to an embodiment of the present disclosure from a side facing a display assembly;

[0024] FIG. 10 is an exploded schematic view of a portion D of the head-mounted display device according to an embodiment of the present disclosure;

[0025] FIG. 11 is a schematic view of a second heat sink according to an embodiment of the present disclosure;

[0026] FIG. 12 is an exploded schematic view of a portion E of the head-mounted display device according to an embodiment of the present disclosure;

[0027] FIG. 13 is a structural schematic diagram of a movable platform system according to an embodiment of the present disclosure;

[0028] FIG. 14 is an information interaction schematic diagram of a movable platform system according to an embodiment of the present disclosure;

[0029] FIG. 15 is a structural schematic diagram of a movable platform according to an embodiment of the present disclosure;

[0030] FIG. 16 is a use scenario schematic diagram of a movable platform system according to an embodiment of the present disclosure;

[0031] FIG. 17 is a flowchart of a control method of a head-mounted display device according to an embodiment of the present disclosure.

[0032] Reference signs 100, head-mounted display device; 10, housing; 10a, electrical cavity; 10b, viewing area; 11, front shell; 111, third frame body; 112, second connecting wall; 113, fourth frame body; 114, inclined wall; 115, fastener; 12, middle frame; 12a, avoiding groove; 121, side wall; 122, top wall; 123, bottom wall; 13, rear shell; 131, first frame body; 132, first connecting wall; 133, second frame body; 14, air outlet; 15, air inlet; 15a, first air inlet; 15b, second air inlet; 20, first display assembly; 20a, first window; 21, support; 21a, air duct; 21b, air duct inlet; 21c, air duct outlet; 22, light engine module; 221, display screen; 222, second heat sink; 2221, second cooling fin; 2222, second plate body; 223, lens group; 2231, first lens; 2232, second lens; 2233, third lens; 23, shielding sheet; 30, control assembly; 31, electrical unit; 311, first electrical unit; 311a, main control unit; 311b, WIFI unit; 311c, main battery unit; 312, second electrical unit; 312a, radio frequency unit; 312b, storage unit; 312c, audio unit; 312d, auxiliary battery unit; 312e, Bluetooth unit; 32, circuit board; 33, shielding body; 34, first heat sink; 341, first cooling fin; 342, first plate body; 35, WIFI antenna; 36, charging interface; 371, SD card interface; 372, USB interface; 381, first audio adapter; 382, second audio adapter; 39, Bluetooth antenna; 40, cooling fan; 40a, air outlet side; 41, heat conduction body; 50, face shield; 50a, shield cavity; 50b, air vent; 60, adjustment assembly; 61, adjustment knob; 62, guide rail; 63, gear set; 70, second display assembly; 70a, second window; 71, outer screen assembly; 72, outer screen adapter; 80, interaction assembly; 80a, operation surface; 81, touchpad; 811, cover plate; 812, touch sensing plate; 813, gel body; 82, touch adapter; 83, indication device; 831, lamp plate; 832, light guide plate; 833, second gel body; 90, antenna; 90a, first omnidirectional antenna; 90b, second omnidirectional antenna; 90c, first directional antenna; 90d, second directional antenna; 90e, third directional antenna; 90f, fourth directional antenna; 91, loudspeaker device; 92, radio device; 93, image sensor; 94, human body detection sensor; 941, distance sensor; 942, distance sensing adapter; 200, movable platform; 201, shooting device; 300, remote control device; 400, terminal device; 500, cloud server. DETAILED DESCRIPTION

[0033] In order to make the objectives, technical solutions and advantages of the present disclosure clearer, the present disclosure will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present disclosure and not to limit the present disclosure.

[0034] In the specific embodiments, various specific technical features described can be combined in any suitable manner without contradiction, for example, different embodiments and technical solutions can be formed by combining different specific technical features. In order to avoid unnecessary repetition, various possible combinations of various specific technical features in the present disclosure are not described again.

[0035] In the following description, the terms "first", "second", and the like are merely used to distinguish different objects, and do not mean that there is the same or a relationship between the objects. It should be understood that the positional description "upper", "lower", "outer", "inner", "left", and "right" are the positions in the normal use state, and the "left" and "right" directions represent the left and right directions shown in the specific corresponding schematic diagram, which can be the left and right directions in the normal use state or can not be.

[0036] It should be noted that the terms "comprise", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the element defined by the statement "comprises one" does not exclude the existence of another identical element in the process, method, article or device including the element. "Multiple" means greater than or equal to two.

[0037] In the description of the present disclosure, the "first direction", "second direction", "width direction", "height direction" orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, wherein the "first direction" is the direction indicated by arrow L1 in the drawings, the "second direction" is the direction indicated by arrow L2 in the drawings, the "width direction" is the direction indicated by arrow L3 in the drawings, and the "height direction" is the direction indicated by arrow L4 in the drawings. It should be understood that these orientation terms are only used to facilitate the description of the present disclosure and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present disclosure.

[0038] In the description of the embodiments of the present disclosure, the directions or positional relationships indicated by the technical terms "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "circumferential" and the like are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of the present disclosure and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed, operated or used in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present disclosure.

[0039] In the description of the embodiments of the present disclosure, unless otherwise explicitly specified and limited, the technical terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium, or can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0040] In the description of the embodiments of the present disclosure, unless otherwise explicitly specified and limited, the technical term "contact" should be understood broadly, which can be direct contact or contact through an intermediate medium layer, and can be contact between two objects in contact without interaction force, or can be contact between two objects in contact with interaction force.

[0041] The embodiments of the present disclosure provide a head-mounted display device, and it should be noted that the head-mounted display device can be a display device supporting AR, VR or MR technology, wherein the AR technology is to simulate the entity information of the physical world by using computer image technology, i.e. to change the real world into a virtual world; the VR technology is to produce virtual objects that do not exist in the physical world by means of computer graphics technology and visualization technology, and to accurately "place" the virtual objects in the physical world, i.e. to change the virtual world into a part of the real world; and the MR technology is to establish an interactive relationship between the virtual world and the real world, i.e. to form a mixed world of virtual and real interaction.

[0042] In the description of the present disclosure, the front-back direction, the width direction and the height direction of the head-mounted display device are defined based on the coordinate system of the head-mounted display device, and the definition of the coordinate system of the head-mounted display device can refer to the general definition in the art.

[0043] Exemplarily, the self-coordinate system of the head-mounted display device is a right-handed three-dimensional Cartesian coordinate system fixed to the head-mounted display device itself, and the origin of the coordinate system is usually located at the optical center point of the front face of the head-mounted display device, or at the middle point between the two optical machines.

[0044] In the case where the head-mounted display device is worn by the wearer in a correct manner, the X-axis extends from the origin to the direction of the right ear of the wearer, and the direction parallel to the X-axis is the width direction of the head-mounted display device, wherein the positive direction of the X-axis is right and the negative direction is left. The Y-axis extends from the origin to the direction of the top of the head of the wearer, and the direction parallel to the Y-axis is the height direction of the head-mounted display device, wherein the positive direction of the Y-axis is top and the negative direction is bottom. The Z-axis extends from the origin to the direction of the front of the wearer, and the direction parallel to the Z-axis is the front-back direction of the head-mounted display device, wherein the positive direction of the Z-axis is front and the negative direction is back, and the direction parallel to the Z-axis is usually also referred to as the thickness direction of the head-mounted display device.

[0045] First Embodiment

[0046] Referring to FIGS. 1-12, the first embodiment of the present disclosure provides a head-mounted display device 100 including a housing 10, a first display assembly 20, and a control assembly 30.

[0047] The housing 10 is used to carry the first display assembly 20 and the control assembly 30, and the specific structural form of the housing 10 is not limited. Exemplarily, the housing 10 is formed as a spectacle frame structure.

[0048] In some embodiments, referring to FIGS. 1-3, the housing 10 has two view regions 10b distributed along the width direction of the head-mounted display device 100.

[0049] Exemplarily, in the case where the head-mounted display device 100 is worn by the wearer in a correct manner, the region of the housing 10 opposite to the left eye of the wearer is formed as one view region 10b, and the region of the housing 10 opposite to the right eye of the wearer is formed as another view region 10b.

[0050] Exemplarily, the housing 10 has a nose pad region for cooperating with the nose of the wearer, and the regions on the opposite sides of the nose pad region along the width direction of the head-mounted display device 100 (the left side edge of the nose pad region is the region on the left, and the right side edge is the region on the right) are respectively formed as two view regions 10b.

[0051] Exemplarily, the housing 10 is formed as a spectacle frame structure, and the spectacle frame structure includes a left frame and a right frame. When the left frame and the right frame are orthogonally projected along the front-back direction of the head-mounted display device 100, the projected region of the left frame is formed as one view region 10b, and the projected region of the right frame is formed as another view region 10b.

[0052] In some embodiments, referring to FIGS. 1 and 3, the housing 10 has an inner surface and a plurality of outer surfaces, where the inner surface of the housing 10 specifically refers to a surface that is not observable from a perspective of a non-wearer when the head-mounted display device 100 is properly worn by a wearer, in other words, the inner surface of the housing 10 refers to a surface of the housing 10 that faces the face of the wearer when the head-mounted display device 100 is properly worn by the wearer.

[0053] Correspondingly to the inner surface, the outer surface of the housing 10 specifically refers to a surface that is observable from a perspective of a non-wearer when the head-mounted display device 100 is properly worn by a wearer, in other words, the outer surface of the housing 10 refers to a surface of the housing 10 that is not blocked by the face of the wearer or other structures of the head-mounted display device 100 when the head-mounted display device 100 is properly worn by the wearer.

[0054] Here, the plurality of outer surfaces of the housing 10 specifically refers to that the housing 10 has a plurality of outer surfaces facing different directions, for example, the plurality of outer surfaces of the housing 10 includes but is not limited to a front surface (a surface that is observable from a front direction of the wearer by a non-wearer), two side surfaces (surfaces that are observable from left and right directions of the wearer by a non-wearer), a top surface (a surface that is observable from a top direction of the wearer by a non-wearer), and a bottom surface (a surface that is observable from a bottom direction of the wearer by a non-wearer).

[0055] In some embodiments, the head-mounted display device 100 includes a temple assembly and / or a headgear assembly detachably connected with the housing 10.

[0056] It can be understood that the wearer can fix the head-mounted display device 100 on the head based on the temple assembly, or fix the head-mounted display device 100 on the head based on the headgear assembly, and based on the detachable connection, the user can switch according to personal preference.

[0057] Referring to FIGS. 5-7, the housing 10 has an electrical cavity 10a, where the electrical cavity 10a specifically refers to a chamber structure formed inside the housing 10, and the electrical cavity 10a is at least used to provide assembly space for the first display assembly 20 and the control assembly 30.

[0058] In some embodiments, as mentioned above, the housing 10 has an inner surface facing the face of the wearer and a plurality of outer surfaces, and the electrical cavity 10a can be formed by the inner surface and the plurality of outer surfaces.

[0059] In some embodiments, referring to FIG. 2, the housing 10 includes a front shell 11, a middle frame 12 and a rear shell 13 oppositely arranged along the front-rear direction of the head-mounted display device 100, the front shell 11 and the rear shell 13 are oppositely arranged along the front-rear direction of the head-mounted display device 100, the front shell 11 is formed as a front wall of the housing 10, the rear shell 13 is formed as a rear wall of the housing 10, the middle frame 12 connects the front shell 11 and the rear shell 13, and the front shell 11, the middle frame 12 and the rear shell 13 collectively enclose an electrical cavity 10a. In this embodiment, the front shell 11, the middle frame 12 and the rear shell 13 can be connected by means such as bonding, clamping, welding, fasteners 115, etc., or at least two of the front shell 11, the middle frame 12 and the rear shell 13 can be formed as an integral structure, or the front shell 11, the middle frame 12 and the rear shell 13 can be formed as an integral structure.

[0060] Exemplarily, referring to FIG. 2, the middle frame 12 includes two side walls 121 oppositely arranged along the width direction of the head-mounted display device 100, and a top wall 122 and a bottom wall 123 oppositely arranged along the height direction of the head-mounted display device 100, the two ends of the side wall 121 along the height direction are respectively connected to the top wall 122 and the bottom wall 123, and the middle frame 12 forms an open front side and an open rear side along the front-rear direction of the head-mounted display device 100, the front shell 11 is arranged at the open front side of the middle frame 12, and the rear shell 13 is arranged at the open rear side of the middle frame 12.

[0061] In this embodiment, specifically, the inner surface of the housing 10 is formed by the rear shell 13, and the plurality of outer surfaces of the housing 10 are formed by the front shell 11 and the middle frame 12.

[0062] The first display assembly 20 is configured to display images to the wearer, and exemplarily, the first display assembly 20 includes two optical engine modules 22 distributed along the width direction of the head-mounted display device 100, and the two optical engine modules 22 are respectively configured to display images to the two eyes of the wearer, in other words, the two optical engine modules 22 are respectively configured as a left optical engine corresponding to the left eye of the wearer and a right optical engine corresponding to the right eye of the wearer. Here, the specific structural form of the optical engine module 22 is not limited, and exemplarily, the optical engine module 22 adopts an optical folding type optical path structure, so that the total length, i.e. the TTL (Total Track Length) thickness, of the optical system for internal screen display in the head-mounted display device 100 can be effectively reduced, which is conducive to realizing the compact design of the head-mounted display device 100 and reducing the overall volume of the device.

[0063] Exemplarily, the optical-mechanical module 22 can adopt a Pancke (ultra-short focal optical folded light path) structure. The Pancke optical scheme can significantly shorten the straight-line distance from the screen to the eye while ensuring virtual image magnification, thereby reducing the volume of the optical-mechanical part. Such a design not only greatly reduces the thickness of the VR glasses, but also effectively reduces the structural cost. Specifically, the Pancke optical scheme can further shorten the thickness of the optical-mechanical module by multiple times of folding the light path. For example, the Pancke optical-mechanical module 22 can not only bring higher definition, smaller distortion, and chromatic aberration, but also further shorten the thickness after multiple times of folding. In this way, the Pancke scheme can make the overall visual experience good, and realize the lightweight design of the head-mounted display device 100.

[0064] As mentioned above, in some embodiments, the housing 10 has two view regions 10b, and in such embodiments, the two optical-mechanical modules 22 are respectively arranged in the two view regions 10b.

[0065] The first display assembly 20 is at least partially arranged in the electrical cavity 10a. Here, all structures of the first display assembly 20 can be arranged in the electrical cavity 10a, or part of the structures of the first display assembly 20 is arranged in the electrical cavity 10a and the other part is arranged outside the electrical cavity 10a.

[0066] Exemplarily, referring to FIGS. 5-7, part of the first display assembly 20 extends out of the electrical cavity 10a along the front-to-back direction of the head-mounted display device 100.

[0067] Referring to FIG. 2, taking an example that the first display assembly 20 includes two optical-mechanical modules 22 and the housing 10 includes a rear shell 13, the rear shell 13 includes a first frame body 131, a first connecting wall 132 and a second frame body 133 arranged in sequence along the width direction of the head-mounted display device 100, the first frame body 131 and the second frame body 133 are respectively located at positions corresponding to the two view regions 10b of the housing 10, and the two optical-mechanical modules 22 respectively pass through the first frame body 131 and the second frame body 133 along the front-to-back direction, thereby extending out of the electrical cavity 10a. Exemplarily, the first frame body 131 and the second frame body 133 are substantially formed as a ring-shaped closed structure (for example, a substantially circular ring structure).

[0068] The advantage of part of the first display assembly 20 extending out of the electrical cavity 10a is that it helps to reduce the overall thickness (i.e., the size along the first direction) of the housing 10 along the front-to-back direction of the head-mounted display device 100, thereby improving the use aesthetics and wearing comfort of the head-mounted display device 100.

[0069] The control component 30 is configured to control the first display component 20 to display an image, and the specific structural form of the control component 30 is not limited as long as it can achieve the control of the first display component 20 to display an image.

[0070] Exemplarily, the control component 30 is configured to acquire an image (for example, a panoramic image captured by a shooting device carried by a movable platform in communication connection with the head-mounted display device 100), process the image (for example, render a region in the panoramic image corresponding to the current visual angle of the wearer), and control the first display component 20 to display the processed image.

[0071] The control component 30 is arranged in the electrical cavity 10a and at least partially located at one side of the first display component 20 along the first direction.

[0072] Exemplarily, the first display component 20 has a first window 20a exposed to the inner surface of the shell 10, and the first direction is perpendicular to the first window 20a.

[0073] It should be noted that the "window" mentioned in the embodiments of the present disclosure refers to the outer surface of a component (including the first display component 20 and the second display component 70 in some embodiments) with a display function for a user to observe an image, in other words, the window is the window for the user to observe the image from the outside, and through the window, the user can observe the light emitted by the internal light-emitting structure (for example, the backlight plate of the display screen), thereby realizing the observation of the image.

[0074] Here, the first window 20a exposed to the inner surface of the shell 10 specifically means that the wearer can observe at least a part of the first window 20a in the direction towards the inner surface of the shell 10, in other words, the wearer can observe the image displayed by the first display component 20 in the direction towards the inner surface of the shell 10.

[0075] Exemplarily, the first display component 20 includes a display screen and one or more lenses arranged towards the wearer, and the first window specifically refers to the surface of the lens closest to the wearer when the head-mounted display device is correctly worn by the wearer.

[0076] Here, the first window 20a specifically refers to the surface that can be directly observed in the direction towards the inner surface of the shell 10 (that is, in the case that the head-mounted display device 100 is correctly worn by the wearer) and can display an image.

[0077] The first direction is specifically arranged as a direction perpendicular to the first window 20a and opposite to the display direction of the first window 20a, and here, the display direction of the first window 20a refers to the direction perpendicular to the first window 20a and pointing to the wearer. In other words, the first direction is specifically arranged as a direction perpendicular to the first window 20a and away from the wearer.

[0078] Further exemplarily, the first direction is a direction away from the face of the wearer. Here, the direction away from the face of the wearer specifically refers to a direction that is substantially perpendicular to the face plane of the wearer and away from the face of the wearer in the case that the wearer wears the head-mounted display device 100 in a correct wearing manner. Here, the face plane of the wearer specifically refers to an imaginary plane passing through the center of the forehead, the root of the nose and the center of the chin of the wearer.

[0079] Further exemplarily, the first direction is a front direction of the head-mounted display device 100, in other words, the first direction is a thickness direction of the head-mounted display device 100. Here, the front direction of the head-mounted display device 100 specifically refers to a side pointing forward in the front-rear direction (may also be referred to as the thickness direction) of the head-mounted display device 100, as mentioned above, the front-rear direction of the head-mounted display device 100 is a direction defined based on the self-coordinate system of the head-mounted display device 100, and the specific definition manner is referred to the description of the related part in the above, which will not be repeated here.

[0080] It should be noted that the first direction is defined in three ways above, and any direction meeting any one of the definitions can be considered as the first direction defined in the embodiments of the present disclosure.

[0081] It should also be noted that the first direction defined in the embodiments of the present disclosure is a single direction, and the opposite direction of the first direction is further defined as the second direction in the present disclosure.

[0082] It should be understood by those skilled in the art that a large-size display interface can provide a better user experience for the wearer, especially in the case that the display content of the head-mounted display device 100 is relatively complex. For example, in some embodiments, the head-mounted display device 100 is configured to be communicatively connected with a movable platform to obtain a panoramic image captured by a shooting device carried by the movable platform, the first display assembly 20 is configured to display a picture corresponding to a viewing angle in the panoramic image according to the current line-of-sight direction of the wearer, and the increase of the size of the display interface of the first display assembly 20 can make the viewing angle of the picture observed by the wearer at a time wider, thereby improving the user experience of the wearer.

[0083] In the related art, the size of the display interface of the head-mounted display device 100 is difficult to meet the use requirements of the wearer, especially the display requirements of the panoramic image.

[0084] In the head-mounted display device 100 of the embodiment, by disposing the control assembly 30 at least partially on one side of the first display assembly 20 along the first direction, the control assembly 30 can be reduced to occupy the space on both sides of the first display assembly 20 along the height direction of the head-mounted display device 100 and / or the space on both sides along the width direction, so that a larger size of the first display assembly 20 can be arranged under the same size of the housing 10, and the user experience is improved.

[0085] In some embodiments, referring to FIGS. 1 and 2, the housing 10 has an air outlet 14 in communication with the electrical cavity 10a, and the opening direction of the air outlet 14 is toward the first direction, or the opening direction of the air outlet 14 is inclined toward the first direction compared to the first reference plane, and the first reference plane is perpendicular to the first direction.

[0086] In the relevant description of the present disclosure, the opening direction specifically refers to the direction in which the normal vector of the opening points.

[0087] Here, the air outlet 14 is specifically used for the airflow to flow out of the electrical cavity 10a, thereby meeting the heat dissipation requirements of the first display assembly 20, the control assembly 30, and other structures arranged in the electrical cavity 10a.

[0088] The opening direction of the air outlet 14 can be toward the first direction, or can be inclined toward the first direction compared to the first reference plane, and those skilled in the art should understand that in the embodiment in which the opening direction of the air outlet 14 is inclined toward the first direction compared to the first reference plane, the opening direction can be front-up, front-down, left-front, right-front, etc. The specific inclination angle range of the opening direction of the air outlet 14 when it is inclined toward the first direction compared to the first reference plane is not limited in the embodiment.

[0089] It should be noted that in the embodiment, the number of air outlets 14 can be one or more, and in the case where the number of air outlets 14 is more than one, the opening direction of one of the air outlets 14 can meet the above requirements, or the opening direction of each of the air outlets 14 can meet the above requirements.

[0090] It can be understood that the airflow flowing out of the air outlet 14 is the airflow after heat exchange with the components in the electrical cavity 10a, and the temperature is relatively high. The airflow flowing to the body parts of the wearer can cause discomfort. In the embodiment, the airflow flowing out of the air outlet 14 will have a tendency to flow toward the front of the wearer, so that the probability of the airflow flowing out of the air outlet 14 flowing to the face (e.g., forehead) or other body parts of the wearer can be reduced as much as possible, and the wearing comfort is improved.

[0091] In some embodiments, the opening direction of the air outlet 14 is inclined towards the first direction compared to the first reference plane, and the included angle between the opening direction of the air outlet 14 and the first reference plane is greater than or equal to 25°. In this way, the probability of the airflow flowing out of the air outlet 14 flowing to the face or other body parts of the wearer can be further reduced, and the wearing comfort can be improved.

[0092] In some embodiments, specifically, the opening direction of the air outlet 14 is inclined towards the first direction compared to the first reference plane, and the included angle between the opening direction of the air outlet 14 and the first reference plane is greater than or equal to 25° and less than or equal to 65°, such as any value or value between any two values in 25°, 30°, 35°, 40°, 45°, 50°, 55°, 60°, 65°. In some embodiments, specifically, the included angle between the opening direction of the air outlet 14 and the first reference plane is 37°-38°, such as 37.28°.

[0093] By setting the inclination angle in the above range, the probability of the airflow flowing out of the air outlet 14 flowing to the face or other body parts of the wearer can be reduced while the aesthetics of the head-mounted display device 100 is improved.

[0094] In some embodiments, the opening direction of the air outlet 14 is parallel to the second reference plane, and the second reference plane includes a plane perpendicular to the width direction of the head-mounted display device 100. In this embodiment, the opening direction of the air outlet 14 is parallel to the second reference plane, that is, the opening direction of the air outlet 14 is not offset towards the left or right side, so that the probability of the airflow flowing out of the air outlet 14 flowing to the ears of the wearer can be reduced while the aesthetics is improved.

[0095] In some embodiments, the opening direction of the air outlet 14 points upwards of the third reference plane, and the third reference plane is perpendicular to the height direction of the head-mounted display device 100. That is, the opening direction of the air outlet 14 is front-up, so that the probability of the airflow flowing out of the air outlet 14 flowing to the neck and below of the wearer can be reduced.

[0096] In some embodiments, referring to FIGS. 1 and 2, the housing 10 includes two view areas 10b distributed along the width direction of the head-mounted display device 100, and the air outlet 14 is located between the two view areas 10b along the width direction.

[0097] In this embodiment, by setting the air outlet 14 between the two view areas 10b instead of within the two view areas 10b, the space occupied by the air outlet 14 within the view area 10b can be reduced, so that the space can be saved, and the first display assembly 20 of larger size can be arranged under the same size of the housing 10, and the use experience of the wearer can be improved.

[0098] In some embodiments, referring to FIGS. 1 and 2, the housing 10 includes a front shell 11, a middle frame 12, and a rear shell 13. In such embodiments, the air outlet 14 can be provided on the front shell 11, or the air outlet 14 can be provided on the middle frame 12, or the air outlet 14 can be formed by the front shell 11 and the middle frame 12, or a portion of the air outlet 14 is provided on the front shell 11 and another portion of the air outlet 14 is provided on the middle frame 12.

[0099] In some embodiments, referring to FIGS. 1 and 2, the housing 10 includes a front shell 11, the front shell 11 includes a third frame body 111, a second connecting wall 112, and a fourth frame body 113 provided in sequence along a width direction of the head-mounted display device 100, the third frame body 111 and the fourth frame body 113 are respectively located at positions corresponding to two view regions 10b of the housing 10, and the air outlet 14 is provided on the second connecting wall 112. Exemplarily, the third frame body 111 and the fourth frame body 113 are formed in a ring-shaped closed structure (e.g., substantially formed in a circular ring structure).

[0100] In this way, the air outlet 14 is provided between the two view regions 10b, and the occupation of the space in the view region 10b by the air outlet 14 is reduced.

[0101] In some embodiments, referring to FIG. 2, the front shell 11 includes an inclined wall 114, the inclined wall 114 is connected to the second connecting wall 112, the second connecting wall 112 is provided toward a first direction, and the inclined wall 114 extends obliquely toward the middle frame 12 in a direction away from the second connecting wall 112. In this way, the opening direction of the air outlet 14 is obliquely provided toward the first direction relative to the first reference plane.

[0102] In some embodiments, referring to FIG. 2, the middle frame 12 has a relief groove 12a, and the inclined wall 114 is provided in the relief groove 12a. In this way, the structural compactness of the head-mounted display device 100 is improved.

[0103] In some embodiments, referring to FIG. 2, the inclined wall 114 is provided on a top side of the second connecting wall 112. In this way, the probability of the airflow flowing out of the air outlet 14 flowing to the body part (e.g., the neck, the hand) below the head of the wearer can be further reduced.

[0104] In some embodiments, referring to FIGS. 1-6, the housing 10 has an air inlet 15 that communicates with the electrical cavity 10a.

[0105] In some embodiments, referring to FIGS. 1-6, the air inlet 15 includes at least one first air inlet 15a, and the opening direction of the first air inlet 15a is toward the width direction of the head-mounted display device 100.

[0106] Here, the opening direction of the first air inlet 15a toward the width direction of the head-mounted display device 100 can be toward the left of the head-mounted display device 100, can be toward the right of the head-mounted display device 100, or can be that part of the first air inlet 15a is toward the left of the head-mounted display device 100 and part of the first air inlet 15a is toward the right of the head-mounted display device 100.

[0107] In this embodiment, by providing the first air inlet 15a with at least one opening direction toward the width direction of the head-mounted display device 100, at least part of the airflow can flow along the width direction of the head-mounted display device 100, which helps to increase the contact area of the airflow with the components in the electrical cavity 10a and prolong the contact time (the size of the head-mounted display device 100 along the width direction is usually significantly larger than the size along the front-rear direction and the height direction), thereby improving the heat dissipation effect.

[0108] In some embodiments, referring to FIGS. 1-6, the housing 10 includes a middle frame 12, and the first air inlet 15a is provided on the middle frame 12. Specifically, the middle frame 12 includes two side walls 121 oppositely arranged along the width direction of the head-mounted display device 100, and at least one side wall 121 is provided with at least one first air inlet 15a. It can be understood that, in the orthographic projection along the width direction of the head-mounted display device 100, the projection of the side wall 121 can generally cover the projection of most of the components in the electrical cavity 10a, and therefore, providing the first air inlet 15a on the side wall 121 of the middle frame 12 helps to further increase the contact area of the airflow with the components in the electrical cavity 10a, thereby improving the heat dissipation effect.

[0109] In some embodiments, the two side walls 121 of the middle frame 12 are each provided with at least one first air inlet 15a, that is, at least one first air inlet 15a is provided at each of the opposite ends of the housing 10 along the width direction, which helps to further increase the air intake amount and the contact area of the airflow with the components in the electrical cavity 10a, thereby improving the heat dissipation effect.

[0110] In some embodiments, referring to FIGS. 2-6, the air inlet 15 includes at least one second air inlet 15b, and the opening direction of the second air inlet 15b is toward the second direction, or the opening direction of the second air inlet 15b is inclined toward the second direction relative to the first reference plane. As mentioned above, the second direction is opposite to the first direction, and the first reference plane is perpendicular to the first direction.

[0111] Here, the opening direction of the second air inlet 15b can be toward the second direction, or can be inclined toward the second direction relative to the first reference plane, or part of the opening direction of the second air inlet 15b is toward the second direction and part of the opening direction of the second air inlet 15b is inclined toward the second direction relative to the first reference plane.

[0112] In the case where the opening direction of the second air inlet 15b is inclined toward the second direction relative to the first reference plane, the second air inlet 15b can be inclined toward a left rear, a right rear, a rear upper, a rear lower, etc., and the inclination angle is not limited.

[0113] It can be understood that the airflow flowing into the air inlet 15 is generally a relatively low-temperature airflow. In the embodiment, the opening direction of the second air inlet 15b is set to be toward the second direction (i.e., toward the face of the wearer) or inclined toward the second direction relative to the first reference plane. In this way, the airflow flowing into the second air inlet 15b can first contact the face of the wearer, thereby reducing the stuffy feeling of the wearer when wearing the head-mounted display device 100, removing the moisture in the face area of the user, and improving the wearing experience.

[0114] In the embodiment where the opening direction of the second air inlet 15b is inclined toward the second direction relative to the first reference plane, further, the opening direction of the second air inlet 15b intersects with the second reference plane, and the second reference plane is perpendicular to the width direction of the head-mounted display device 100. That is, the second air inlet 15b is inclined toward the left rear or the right rear. In this way, it is helpful to improve the air intake amount and reduce the direct contact of the airflow with the face of the wearer, thereby improving the wearing comfort.

[0115] In this embodiment, specifically, the opening direction of the second air inlet 15b is inclined toward a direction away from the first display assembly 20 relative to the second reference plane. In this way, the direct contact of the airflow with the face of the wearer is further reduced.

[0116] In the embodiment where the opening direction of the second air inlet 15b is inclined toward the second direction relative to the first reference plane, further, the opening direction of the second air inlet 15b is parallel to the third reference plane, and the third reference plane is perpendicular to the height direction of the head-mounted display device 100. That is, the opening direction of the second air inlet 15b is not offset upward or downward. In this way, it is helpful to reduce the wind resistance and improve the air intake amount.

[0117] In some embodiments, referring to FIGS. 2-6, the shell 10 includes a rear shell 13, and the second air inlet 15b is arranged on the rear shell 13. In this way, it is helpful to further improve the probability that the airflow flowing into the second air inlet 15b contacts the face of the wearer, thereby further reducing the stuffy feeling of the wearer when wearing the head-mounted display device 100.

[0118] In some embodiments, referring to FIGS. 1-6, the shell 10 is provided with at least one air inlet 15 on each of the opposite sides in the width direction of the head-mounted display device 100. In this way, it is helpful to improve the air intake amount.

[0119] Exemplarily, in this embodiment, the housing 10 is provided with at least one first air inlet 15a on each of the opposite sides of the head-mounted display device 100 along the width direction thereof, and / or the housing 10 is provided with at least one second air inlet 15b on each of the opposite sides of the head-mounted display device 100 along the width direction thereof.

[0120] In some embodiments, specifically, the housing 10 is provided with one first air inlet 15a and one second air inlet 15b on each of the opposite sides of the head-mounted display device 100 along the width direction thereof. In this way, better heat dissipation effect can be achieved while reducing the stuffy feeling of the wearer when wearing the head-mounted display device 100, thereby improving the wearing experience.

[0121] In some embodiments, as mentioned above, the air outlet 14 of the housing 10 is located at the middle position of the housing 10 along the width direction thereof, for example, between the two view areas 10b. In such embodiments, in combination with the air inlets 15 provided on the opposite sides of the housing 10 along the width direction thereof, the air flow can be guided from the two sides to the middle of the housing 10 along the width direction thereof. In this way, the components in the two view areas 10b, for example, the two optical engine modules 22 of the first display assembly 20, can all achieve better heat dissipation effect.

[0122] It should be noted that the air inlets 15 are not limited to the above-described manner, for example, in some other embodiments, at least one air inlet 15 can be provided towards one side of the housing 10 along the height direction of the head-mounted display device 100.

[0123] In some embodiments, referring to FIGS. 2, 5-7, the head-mounted display device 100 comprises a heat dissipation fan 40, the housing 10 has an air inlet 15 and an air outlet 14 which are in communication with the electrical cavity 10a, and the heat dissipation fan 40 is configured to drive the air flow from the air inlet 15 to the air outlet 14. The first display assembly 20, the control assembly 30, and the heat dissipation fan 40 are sequentially arranged along a first direction.

[0124] It should be noted that the specific arrangement of the air inlets 15 and the air outlet 14 is not limited in this embodiment, which can be arranged in the manner described above or in any other suitable manner.

[0125] In this embodiment, the specific structure of the heat dissipation fan 40 is not limited, which can be a centrifugal fan, an axial fan, or the like.

[0126] The sequential arrangement of the first display assembly 20, the control assembly 30, and the heat dissipation fan 40 along the first direction means that, when viewed along the first direction, the first display assembly 20, the control assembly 30, and the heat dissipation fan 40 are sequentially arranged, in other words, at least a part of the control assembly 30 is located between the first display assembly 20 and the heat dissipation fan 40 along the first direction.

[0127] In the embodiment, the stack of the first display assembly 20, the control assembly 30 and the heat dissipation fan 40 helps to make the airflow contact the first display assembly 20 and the control assembly 30 at the same time, thereby dissipating heat from the two, and helps to reduce the space occupation of the heat dissipation fan 40 to the first display assembly 20 along the height direction and the width direction of the head-mounted display device 100, thereby helping to arrange a larger size of the first display assembly 20 under the same size of the shell 10, and improving the user experience of the wearer.

[0128] In some embodiments, referring to FIG. 7, the heat dissipation fan 40 includes a centrifugal fan, the axial direction of the centrifugal fan is parallel to the first direction, and the outflow side 40a of the centrifugal fan is perpendicular to the first direction.

[0129] Here, the axis of the centrifugal fan specifically refers to the rotation axis of the fan blade of the centrifugal fan. It can be understood that compared with the axial flow fan, the centrifugal fan has a smaller size in the axial direction, so that the space occupation of the heat dissipation fan 40 in the first direction can be reduced, the thickness of the head-mounted display device 100 in the first direction can be reduced, and the wearing experience can be improved.

[0130] In the embodiment, it can be understood that the centrifugal fan can have one outflow side 40a or multiple outflow sides 40a, for example, one side or two sides of the centrifugal fan along the width direction of the head-mounted display device 100 or one side or two sides of the centrifugal fan along the height direction are formed as the outflow side 40a, or the circumferential surface of the centrifugal fan is formed as the outflow side 40a.

[0131] In some embodiments, the outflow side 40a of the centrifugal fan is arranged towards the top side of the head-mounted display device 100, and at least a part of the projection of the air outlet 14 is located on the top side of the centrifugal fan in the orthographic projection along the first direction. In this way, the efficiency of the airflow flowing from the outflow side 40a of the centrifugal fan to the air outlet 14 and the air resistance can be reduced, thereby improving the gas circulation efficiency in the electrical cavity 10a, and further, the heat dissipation efficiency can be improved.

[0132] In some embodiments, referring to FIGS. 2, 5 and 6, the shell 10 has two view areas 10b distributed along the width direction of the head-mounted display device 100, and the axis of the heat dissipation fan 40 is located between the two view areas 10b.

[0133] Here, the axis of the heat dissipation fan 40 specifically refers to the rotating axis of the fan blade of the heat dissipation fan 40. In this embodiment, the axis of the heat dissipation fan 40 is arranged between the two view areas 10b, so that the heat dissipation fan 40 can be used to dissipate heat from the components in the two view areas 10b (for example, dissipate heat from the two optical engine modules 22 of the first display assembly 20), thereby helping to reduce the overall weight and power consumption of the head-mounted display device 100 and improve wearing comfort and battery life.

[0134] Of course, in some other embodiments, the head-mounted display device 100 can include two heat dissipation fans 40, and the axes of the two heat dissipation fans 40 are respectively arranged in the two view areas 10b.

[0135] In some embodiments, referring to FIGS. 5 and 6, the housing 10 is provided with at least one air inlet 15 on each of the opposite sides in the width direction, and the housing 10 has one air outlet 14. The air outlet 14 and the axis of the heat dissipation fan 40 are arranged between the two view areas 10b, so that the heat dissipation fan 40 can guide the airflow to flow in the direction indicated by the dashed arrow in FIG. 5, that is, guide the airflow to flow into the housing 10 from the opposite sides in the width direction of the housing 10, respectively contact the components in the two view areas 10b, and then flow out of the housing 10 from the position between the two view areas 10b.

[0136] In some embodiments, referring to FIGS. 2, 5-9, the control assembly 30 includes a circuit board and an electrical unit 31 arranged on the circuit board. The electrical unit 31 includes at least one first electrical unit 311, and the first electrical unit 311 is arranged on the side of the circuit board facing the heat dissipation fan 40. The heat dissipation fan 40 is configured to drive the airflow to flow through the first electrical unit 311.

[0137] Here, the specific structure of the circuit board is not limited, which can be an FPC circuit board, a PCB circuit board, etc. In this embodiment, the thickness direction of the circuit board is the first direction.

[0138] The electrical unit 31 specifically refers to a functional unit arranged on the circuit board. The specific type of the electrical unit 31 can be set by those skilled in the art according to the specific use requirements of the head-mounted display device 100, which is not limited in this embodiment.

[0139] The electrical unit 31 can include a plurality of first electrical units 311, and the plurality of first electrical units 311 can be respectively used to realize different functions of the head-mounted display device 100.

[0140] In this embodiment, the first electrical unit 311 is arranged on the side of the circuit board facing the heat dissipation fan 40, and the heat dissipation fan 40 is configured to drive the airflow to flow through the first electrical unit 311, so that the heat dissipation effect of the first electrical unit 311 can be realized.

[0141] In some embodiments, referring to FIG. 5 and FIG. 6, the head-mounted display includes a heat-conducting body 41, which is arranged between the first electrical unit 311 and the heat-dissipating fan 40.

[0142] Here, the heat-conducting body 41 specifically refers to a structure made of a heat-conducting material. The specific structural form of the heat-conducting body 41 is not limited. In the present embodiment, by arranging the heat-conducting body 41 between the first electrical unit 311 and the heat-dissipating fan 40, it helps to passively conduct the heat of the first electrical unit 311 to the vicinity of the heat-dissipating fan 40, and cooperates with the active heat dissipation of the heat-dissipating fan 40, to achieve better heat dissipation effect.

[0143] In some embodiments, referring to FIG. 5 and FIG. 6, the control assembly 30 includes a shielding body 33, which covers the side of the first electrical unit 311 away from the circuit board. The heat-conducting body 41 is arranged between the shielding body 33 and the first electrical unit 311, and / or the heat-conducting body 41 is arranged between the shielding body 33 and the heat-dissipating fan 40.

[0144] Here, the shielding body 33 is used to reduce electromagnetic interference and provide protection for the first electrical unit 311, and the specific structure of the shielding body 33 is not limited. For example, the shielding body 33 includes a metal shielding cover, and the first electrical unit 311 is arranged in the cavity formed by the metal shielding cover and the circuit board.

[0145] As mentioned above, the number of first electrical units 311 can be multiple. In such embodiments, one shielding body 33 can cover the side of multiple first electrical units 311 away from the circuit board, or one shielding body 33 can be arranged one-to-one corresponding to one first electrical unit 311.

[0146] In the present embodiment, the heat-conducting body 41 is arranged between the shielding body 33 and the first electrical unit 311, and / or the heat-conducting body 41 is arranged between the shielding body 33 and the heat-dissipating fan 40, so as to further improve the heat dissipation effect.

[0147] In some embodiments, the heat-conducting body 41 includes heat-conducting gel, which has good elasticity, so as to be relatively tightly attached to the corresponding structure, thereby achieving better heat conduction effect. Of course, in some other embodiments, the heat-conducting body 41 can also include a solid structure.

[0148] In some embodiments, referring to FIG. 2 and FIG. 10, the head-mounted display device 100 includes a first heat sink 34, which is arranged on the side of the first electrical unit 311 facing the heat-dissipating fan 40, and the first heat sink 34 includes a first heat sink fin 341 connected to the heat-dissipating fan 40.

[0149] Exemplarily, the first heat sink 34 can be connected to the heat dissipation fan 40 (e.g., connected to the housing of the heat dissipation fan 40) by welding, bonding, fastener connection, or the like, or the first heat sink 34 can be formed in an integrated structure with the housing of the heat dissipation fan 40.

[0150] Exemplarily, the first heat sink 34 includes a first plate body 342 and a first fin 341 connected to the first plate body 342, the first plate body 342 is connected to the heat dissipation fan 40 (e.g., connected to the housing of the heat dissipation fan 40), and the first plate body 342 is arranged opposite to the first electrical unit 311 along a first direction.

[0151] The thickness direction of the first plate body 342 is parallel to the first direction, and the first fin 341 protrudes from at least one side surface of the first plate body 342 along the thickness direction. Exemplarily, the first fin 341 protrudes from one side surface of the first plate body 342 along the first direction, i.e., protrudes from the side surface of the first plate body 342 facing away from the first electrical unit 311, and the side surface of the first plate body 342 facing the first electrical unit 311 is formed as a heat conduction surface.

[0152] In this embodiment, the heat of the first electrical unit 311 can be transferred to the first heat sink 34, and the airflow blown by the heat dissipation fan 40 can be in full contact with the first fin 341 of the first heat sink 34, thereby improving the heat dissipation effect of the first electrical unit 311.

[0153] It should be noted that, as mentioned above, the number of the first electrical units 311 can be multiple. In such an embodiment, the first fin 341 can be arranged on one side of each of the first electrical units 311 along the first direction, or only a part of the first electrical units 311 can have the first fin 341 arranged on one side thereof along the first direction, and the heat of the other part of the first electrical units 311 can be conducted to the housing of the heat dissipation fan 40 instead of the first heat sink 34.

[0154] In some embodiments, the head-mounted display device 100 includes a heat conduction body 41 that conducts heat from the first electrical unit 311 to the first heat sink 34.

[0155] Taking the control assembly 30 including the shielding body 33 as an example, the heat conduction body 41 is arranged between the shielding body 33 and the first heat sink 34, and the two side surfaces of the heat conduction body 41 are in contact with the shielding body 33 and the first heat sink 34 (e.g., the first plate body 342 of the first heat sink 34) respectively, thereby improving the heat transfer efficiency.

[0156] In this embodiment, the heat conduction body 41 helps to improve the efficiency of heat transfer from the first electrical unit 311 to the first heat sink 34, thereby helping to improve the heat dissipation effect of the first electrical unit 311.

[0157] It should be noted that in some other embodiments, the first heat sink 34 can not be provided, and the heat conductor 41 can conduct heat from the first electrical unit 311 to the housing of the heat dissipation fan 40. In some other embodiments, the heat conductor 41 can not be provided, and the first heat sink 34 can be attached to the shielding body 33 or attached to the first electrical unit 311, so that the heat of the first electrical unit 311 is conducted to the first heat sink 34.

[0158] In some embodiments, referring to FIGS. 2 and 10, the heat dissipation fan 40 includes a centrifugal fan, the air outlet side 40a of the heat dissipation fan 40 is arranged towards the top side of the head-mounted display device 100, and at least a portion of the first heat sink fin 341 is arranged on the top side of the heat dissipation fan 40 and extends along the height direction of the head-mounted display device 100 (the thickness direction of this portion of the first heat sink fin 341 is perpendicular to the height direction), so that the airflow blown by the heat dissipation fan 40 can be in full contact with the first heat sink fin 341, thereby improving the heat dissipation effect.

[0159] In some embodiments, referring to FIGS. 2 and 10, the housing 10 is provided with an air inlet 15 on at least one side in the width direction, and at least a portion of the first heat sink fin 341 extends along the width direction of the head-mounted display device 100 (the thickness direction of this portion of the first heat sink fin 341 is perpendicular to the width direction), so that the airflow flowing into the air inlet 15 can be in full contact with the first heat sink fin 341, thereby improving the heat dissipation effect.

[0160] In some embodiments, referring to FIGS. 2 and 10, the housing 10 has an air outlet 14, and at least a portion of the first heat sink fin 341 is arranged opposite to the air outlet 14 in the first direction, so that the airflow can be in full contact with the first heat sink fin 341 before flowing out of the air outlet 14, thereby improving the heat dissipation effect.

[0161] In some embodiments, referring to FIG. 9, the first electrical unit 311 includes at least one of: a main control unit 311a, a WIFI unit 311b, and a main battery unit 311c.

[0162] Here, the main control unit 311a specifically refers to a unit for realizing the main function of the head-mounted display device 100, for example, a unit for controlling the first display assembly 20 to display images.

[0163] The WIFI unit 311b refers to a unit for realizing the WIFI communication function. For example, referring to FIG. 10, the control assembly 30 includes a WIFI antenna 35, and the WIFI antenna 35 is electrically connected to the WIFI unit 311b. Further for example, the WIFI antenna 35 is arranged on one side of the first display assembly 20 in the height direction, and still further for example, the WIFI antenna 35 is arranged on the top side of one of the optical-mechanical modules 22 of the first display assembly 20, so as to help reduce the shielding and improve the radiation intensity of the WIFI signal.

[0164] The main battery unit 311c refers to a unit for powering the main power-consuming components within the head-mounted display device 100. Exemplarily, the main battery unit 311c is at least used for powering the first display assembly 20. It should be noted that, in some embodiments, the main battery unit 311c can be the only battery unit of the head-mounted display device 100, and in some other embodiments, the head-mounted display device 100 can include other battery units, but the main battery unit 311c is the battery unit with the largest capacity among the battery units of the head-mounted display device 100.

[0165] Exemplarily, the control assembly 30 includes a charging interface 36 connected with the main battery unit 311c.

[0166] It can be understood that the above several first electrical units 311 all belong to electrical units 31 with relatively large heat generation. In the present embodiment, the above one or more electrical units 31 with large heat generation are arranged on the side of the circuit board facing the cooling fan 40, so that these electrical units 31 can obtain better cooling effect.

[0167] In some embodiments, referring to FIGS. 5-7 and 9, the electrical units 31 include at least one second electrical unit 312, the second electrical unit 312 is arranged on the side of the circuit board facing the first display assembly 20, and the cooling fan 40 is configured to drive the airflow to flow through the second electrical unit 312.

[0168] In the present embodiment, the first electrical unit 311 and the second electrical unit 312 are arranged on the opposite sides of the circuit board in the thickness direction, so as to help improve the structural compactness of the control assembly 30 and reduce the space occupied by the control assembly 30 in the housing 10.

[0169] In some embodiments, the second electrical unit 312 and the first display assembly 20 form a space for airflow to flow.

[0170] In this way, on the one hand, it helps to make the airflow fully contact the first display assembly 20 and the second electrical unit 312, and on the other hand, it helps to reduce the thermal disturbance between the first display assembly 20 and the second electrical unit 312, and in summary, it helps to improve the cooling effect of the first display assembly 20 and the second electrical unit 312.

[0171] In some embodiments, referring to FIG. 9, the second electrical unit 312 includes at least one of the following: a radio frequency unit 312a, a storage unit 312b, an audio unit 312c, a secondary battery unit 312d, and a Bluetooth unit 312e.

[0172] The radio frequency unit 312a is a unit for implementing a transmission and reception function of a radio frequency signal. The head-mounted display device 100 includes an antenna 90, which is electrically connected to the radio frequency unit 312a, for example.

[0173] The storage unit 312b is a unit for implementing a data storage and export function. The storage unit 312b includes a UFS (Universal Flash Storage) unit, for example. The control component 30 includes a storage interface exposed to a surface of the housing 10 and electrically connected to the storage unit 312b (for example, electrically connected to the storage unit 312b through an FPC), which is used to electrically connect an external storage device to the storage unit 312b. The storage interface includes at least one of an SD card interface 371, which can be arranged to be exposed to an inner surface of the housing 10, and a USB interface 372, which can be arranged to be exposed to an outer surface of the housing 10, for example, an outer surface of one side of the housing 10 in the width direction or the height direction, for example, with reference to FIG. 10.

[0174] The audio unit 312c is a unit for implementing a collection and / or playing function of audio. The head-mounted display device 100 includes a speaker 91, and the control component 30 includes a first audio adapter 381 (for example, an FPC) electrically connecting the speaker 91 to the audio unit 312c, for example, with reference to FIGS. 5 and 10. The head-mounted display device 100 also includes a radio device 92, and the control component 30 includes a second audio adapter 382 (for example, an FPC) electrically connecting the radio device 92 to the audio unit 312c.

[0175] As mentioned above, the first electrical unit 311 can include a main battery unit 311c, and the auxiliary battery unit 312d is a battery unit with a relatively low capacity compared to the main battery unit 311c. In this embodiment, the auxiliary battery unit 312d is used to power at least one of the cooling fan 40 and the radio frequency unit 312a. By using the auxiliary battery unit 312d independent of the main battery unit 311c to power the cooling fan 40 and the radio frequency unit 312a, the reliability of the cooling function and / or the communication function of the head-mounted display device can be improved.

[0176] The Bluetooth unit 312e is a unit for implementing a Bluetooth function. The control component includes a Bluetooth antenna 39 connected to the Bluetooth unit 312e, for example.

[0177] It can be understood that the heat generation of the second electrical unit 312 mentioned above is obviously lower than that of the first electrical unit 311. In the embodiment, by arranging the high-heat-generating electrical unit 31 and the low-heat-generating electrical unit 31 on opposite sides of the circuit board, respectively, it is helpful to reduce heat crosstalk and improve heat dissipation effect.

[0178] In some embodiments, with reference to FIGS. 2, 5, 6, and 10, the housing 10 has an air inlet 15 and an air outlet 14 communicating with the electrical cavity 10a, and the head-mounted display device 100 includes a cooling fan 40. The first display assembly 20 includes a support 21 and an optical engine module 22 arranged on the support 21, wherein the support 21 forms an air duct 21a, at least a portion of the optical engine module 22 is arranged in the air duct 21a, and the cooling fan 40 is configured to drive at least a portion of the airflow to flow from the air inlet 15 to the air outlet 14 via the air duct 21a.

[0179] In the embodiment, the specific arrangement of the air inlet 15, the air outlet 14, and the cooling fan 40 is not limited, which can be arranged in any of the manners described in the above embodiments, or can be arranged in any other suitable manner.

[0180] The first display assembly 20 includes a support 21 and an optical engine module 22 arranged on the support 21, and the support 21 is used to support and fix the optical engine module 22, so that the optical engine module 22 is kept in a suitable position, for example, in a position opposite to the eyes of the wearer.

[0181] The specific structure of the support 21 is not limited, as long as it can support and fix the optical engine module 22 and form the air duct 21a. At least a portion of the optical engine module 22 is arranged in the air duct 21a. For example, one end of the optical engine module 22 along a first direction is arranged in the air duct 21a, and one end of the optical engine module 22 along a second direction is arranged outside the air duct 21a.

[0182] In the embodiment, the support 21 forms the air duct 21a, and at least a portion of the optical engine module 22 is arranged in the air duct 21a, so that the optical engine module 22 can be in sufficient contact with the airflow, thereby helping to improve the heat dissipation effect of the optical engine module 22.

[0183] In some embodiments, at least a portion of the control assembly 30 is located in the air duct 21a, so as to improve the heat dissipation effect of the control assembly 30.

[0184] In some embodiments, referring to FIG. 5 and FIG. 6, the control assembly 30 is spaced apart from the bracket 21 along the first direction, which helps to reduce the heat interference between the control assembly 30 and the optical engine module 22, and improve the heat dissipation effect on the optical engine module 22. In such embodiments, the space between the control assembly 30 and the bracket 21 along the first direction forms another air passage that is relatively independent of the air duct 21a, and the cooling fan 40 is configured to drive a portion of the airflow flowing into the air inlet 15 to flow to the air outlet 14 through the air duct 21a, and another portion of the airflow to flow to the air outlet 14 through the space between the control assembly 30 and the bracket 21 along the first direction.

[0185] In some embodiments, referring to FIG. 5 and FIG. 6, the air duct 21a extends along the width direction of the head-mounted display device 100, and the bracket 21 has an air duct inlet 21b that communicates the air duct 21a and the air inlet 15 at at least one end along the width direction.

[0186] In this way, the airflow in the air duct 21a will flow generally along the width direction of the housing 10, which helps to improve the contact area and contact time of the airflow with the optical engine module 22, thereby helping to further improve the heat dissipation effect on the optical engine module 22.

[0187] In some embodiments, referring to FIG. 2, the bracket 21 has an air duct inlet 21b at each of the opposite ends along the width direction, and the first display assembly 20 includes two optical engine modules 22 distributed along the width direction, and the bracket 21 has an air duct outlet 21c that communicates the air duct 21a and the air outlet 14, and the air duct outlet 21c is located between the two optical engine modules 22 along the width direction.

[0188] In this embodiment, the airflow will flow into the air duct 21a from the two ends of the bracket 21 along the width direction, respectively, and flow through the two optical engine modules 22, respectively, and then flow out from between the two optical engine modules 22. Such a configuration helps to reduce the heat interference between the two optical engine modules 22, and enables both of the two optical engine modules 22 to be fully contacted with the cool air, thereby improving the heat dissipation effect on the two optical engine modules 22.

[0189] In the above embodiments, for example, the housing 10 has at least one air inlet 15 at each of the opposite ends along the width direction of the head-mounted display device 100, the air outlet 14 is located between the two optical engine modules 22 along the width direction, and the axis of the cooling fan 40 passes through the air duct outlet 21c. In this way, the airflow is driven to flow into the housing 10 from both sides of the housing 10 along the width direction, enter the air duct 21a through the air duct inlet 21b, and then exit the air duct 21a through the air duct outlet 21c and the air outlet 14.

[0190] In some embodiments, referring to FIGS. 5, 6, 10 and 11, the optical engine module 22 includes a display screen 221 and a second heat sink 222 disposed at a side of the display screen 221 along the first direction, the second heat sink 222 includes second heat dissipation fins 2221, and the second heat dissipation fins 2221 are located in the air duct 21a.

[0191] It can be understood that the display screen 221 is a main heat generating component of the optical engine module 22, and the second heat sink 222 has a larger contact area with the airflow than the display screen 221, so as to help improve the heat dissipation effect.

[0192] Exemplarily, referring to FIG. 11, the second heat sink 222 includes a second plate body 2222 and the second heat dissipation fins 2221, the side of the second plate body 2222 facing the display screen 221 is formed as a heat conduction surface, and the second heat dissipation fins 2221 protrude from the side surface of the second plate body 2222 away from the display screen 221.

[0193] Exemplarily, the extension direction of the second heat dissipation fins 2221 is the same as the flow direction of the airflow in the air duct 21a, for example, in the embodiment in which the air duct 21a extends along the width direction of the head-mounted display device 100, the second heat dissipation fins 2221 extend along the width direction, so as to increase the contact area of the airflow with the second heat dissipation fins 2221 and reduce the air resistance in the air duct 21a.

[0194] Referring to FIG. 10, the first display assembly 20 further includes a shielding sheet 23 disposed at a side of the optical engine module 22 along the second direction.

[0195] In some embodiments, referring to FIGS. 5 and 6, the head-mounted display device 100 includes a heat conduction body 41 disposed between the display screen 221 and the second heat sink 222. In this way, the efficiency of heat conduction from the display screen 221 to the second heat sink 222 is improved, and the heat dissipation effect is further improved.

[0196] In some embodiments, as mentioned above, the heat conduction body 41 includes heat conduction gel, so as to improve the heat conduction effect.

[0197] In some embodiments, referring to FIGS. 2 and 3, the head-mounted display device 100 includes a face cover 50 disposed at a side of the housing 10 along the second direction, the second direction is opposite to the first direction, the housing 10 and the face cover 50 enclose a cover cavity 50a, and the at least one air inlet 15 communicates the cover cavity 50a with the electrical cavity 10a.

[0198] Here, the face cover 50 is used to cover the face of the wearer and keep the nasal root and eye of the wearer in the cover cavity 50a, so as to form a relatively private display space and enable the wearer to obtain an immersive viewing experience.

[0199] The specific structure of the mask 50 is not limited, and the mask 50 is exemplarily provided in a flexible structure, for example, a structure made of a silica gel material, so as to improve the fitting degree of the mask 50 to the face of the wearer and improve the wearing comfort.

[0200] Exemplarily, one end of the first display assembly 20 in the second direction extends into the mask cavity 50a.

[0201] It can be understood that, in the case that the head-mounted display device 100 is correctly worn by the wearer, the mask cavity 50a is formed as a relatively closed space, and the air flow is poor, which causes the mask cavity 50a to be easy to generate water vapor due to the breathing of the wearer and / or the change of the external environment, and thus causes the first window 20a of the first display assembly 20 to fog and / or causes the wearer to feel stuffy, which affects the use experience of the wearer.

[0202] In the embodiment, the at least one air inlet 15 communicates the mask cavity 50a with the electrical cavity 10a, so as to improve the air flow in the mask cavity 50a, reduce the probability of the first window 20a of the first display assembly 20 fogging and / or defogging, and reduce the stuffy feeling during wearing and improve the use experience.

[0203] In some embodiments, referring to FIG. 2, the mask cavity 50a has at least one air vent 50b, and the air vent 50b communicates the mask cavity 50a with the external environment. In actual use, external air can enter the mask cavity 50a through the air vent 50b, and then exit the mask cavity 50a through the air inlet 15 and enter the electrical cavity 10a, so as to further improve the air flow in the mask cavity 50a.

[0204] In some embodiments, referring to FIGS. 2, 3 and 4, the air inlet 15 includes at least one second air inlet 15b, the second air inlet 15b communicates the mask cavity 50a with the electrical cavity 10a, and the air vent 50b and the second air inlet 15b are distributed along the width direction of the head-mounted display device 100.

[0205] As mentioned above, the opening direction of the second air inlet 15b is toward the second direction, or the opening direction of the second air inlet 15b is inclined toward the second direction compared with the first reference plane.

[0206] In the embodiment, the air vent 50b and the second air inlet 15b are provided to be distributed along the width direction of the head-mounted display device 100, so as to facilitate the air flow in the mask cavity 50a to be substantially along the width direction of the head-mounted display device 100, improve the contact area between the air flow and the first window 20a of the first display assembly 20, and thus improve the defogging effect.

[0207] In some embodiments, referring to FIG. 2, FIG. 3 and FIG. 4, the first display assembly 20 includes two light engine modules 22 distributed along the width direction, and at least one second air inlet 15b is arranged at each of the opposite sides of the first display assembly 20 along the width direction.

[0208] At least one air vent 50b is located between the two light engine modules 22 along the width direction. For example, the face cover 50 has a nose pad for matching the nose of the wearer, and the nose pad is located between the two light engine modules 22 along the width direction. The matching gap between the nose pad and the nose of the wearer forms an air vent 50b.

[0209] For example, the at least one air vent 50b can be formed on the top side and / or the bottom side of each light engine module 22 by punching the face cover 50.

[0210] In this embodiment, referring to FIG. 3, the air flow will flow in the direction indicated by the dashed arrow in FIG. 3. Specifically, the external air will flow into the cover cavity 50a from the position between the two light engine modules 22 and / or the position at the top side and / or the bottom side of the two light engine modules 22, and then flow to both sides and enter the electrical cavity 10a through the second air inlets 15b on both sides. This enables the display surfaces of the two light engine modules 22 to be fully contacted by the air flow, thereby improving the defogging effect.

[0211] In some embodiments, the head-mounted display device 100 includes a cooling fan 40 configured to drive the air flow from the cover cavity 50a to the electrical cavity 10a through the air inlet 15. The cooling fan 40 has a cooling mode and a defogging mode, and the power of the cooling fan 40 in the defogging mode is greater than that in the cooling mode. The user can turn on the defogging mode through the physical operation key or the virtual operation key provided on the head-mounted display device.

[0212] For example, in the cooling mode, the driving ability of the cooling fan 40 on the air flow is relatively weak. The air flow mainly flows in the electrical cavity 10a, and the air flow speed in the cover cavity 50a is low, so that the wearer can hardly feel or only slightly feel the air flow in the cover cavity 50a, thereby improving the wearing comfort of the wearer. In the case that the first window 20a of the first display assembly 20 is fogged, the cooling fan 40 can be adjusted to the defogging mode. At this time, the power of the cooling fan 40 is increased, the driving ability of the cooling fan 40 on the air flow is enhanced, and the air flow speed in the cover cavity 50a is increased, thereby achieving the effect of rapid defogging.

[0213] The heat dissipation scheme and the defogging scheme of the head-mounted display device 100 are described in the above embodiments, and those skilled in the art should understand that the schemes in the above embodiments can be used in combination. The following will be further described in combination with a specific embodiment.

[0214] Referring to FIGS. 1-11, the head-mounted display device 100 includes a housing 10, a first display assembly 20, a control assembly 30, a second display assembly 70, and a face shield 50. The face shield 50 is disposed on one side of the housing 10 along a second direction, and the housing 10 has an electrical cavity 10a, and the face shield 50 and the housing 10 form a shield cavity 50a.

[0215] The control assembly 30 and the heat dissipation fan 40 are disposed in the electrical cavity 10a, one end of the first display assembly 20 along the first direction is located in the electrical cavity 10a, and the other end along the second direction protrudes into the shield cavity 50a. The first display assembly 20, the control assembly 30, and the heat dissipation fan 40 are sequentially arranged along the first direction.

[0216] The housing 10 specifically has one air outlet 14 and four air inlets 15, and the heat dissipation fan 40 is configured to drive airflow to flow from the four air inlets 15 to the air outlet 14.

[0217] The housing 10 includes two viewing zones 10b distributed along the width direction of the head-mounted display device 100, and the air outlet 14 is located between the two viewing zones 10b along the width direction. The opening direction of the air outlet 14 is toward the first direction, or the opening direction of the air outlet 14 is inclined toward the first direction relative to the first reference plane.

[0218] Exemplarily, the angle between the opening direction of the air outlet 14 and the first reference plane is greater than or equal to 30 degrees. Exemplarily, the opening direction of the air outlet 14 is parallel to the second reference plane, and the second reference plane is a plane perpendicular to the width direction of the head-mounted display device 100. Exemplarily, the opening direction of the air outlet 14 points to the top side of the third reference plane, and the third reference plane is a plane perpendicular to the height direction of the head-mounted display device 100.

[0219] The four air inlets 15 include two first air inlets 15a and two second air inlets 15b. The two first air inlets 15a are respectively disposed at opposite ends of the housing 10 along the width direction and have openings facing the width direction. The two second air inlets 15b are respectively located on opposite sides of the first display assembly 20 along the second direction and have openings facing the second direction or inclined toward the second direction relative to the first reference plane. The second air inlets 15b communicate the shield cavity 50a with the electrical cavity 10a.

[0220] Exemplarily, the opening direction of the second air inlet 15b is inclined relative to the first reference plane towards the second direction. Exemplarily, the opening direction of the second air inlet 15b intersects the second reference plane. Exemplarily, the opening direction of the second air inlet 15b is inclined relative to the second reference plane towards the direction away from the first display assembly 20. Exemplarily, the opening direction of the second air inlet 15b is parallel to the third reference plane.

[0221] The heat dissipation fan 40 is arranged as a centrifugal fan, an axis of the heat dissipation fan 40 is located between the two view areas 10b, an air outlet side 40a of the heat dissipation fan 40 faces the top side of the head-mounted display device 100, in the orthographic projection along the first direction, a projection of the air outlet 14 is located at the top side of the heat dissipation fan 40.

[0222] The control assembly 30 includes a circuit board, at least one first electrical unit 311 arranged on a side of the circuit board facing the heat dissipation fan 40, and at least one second electrical unit 312 arranged on a side of the circuit board facing the first display assembly 20. The first electrical unit 311 includes at least one of the following: a main control unit 311a, a WIFI unit 311b, and a main battery unit 311c. The second electrical unit 312 includes at least one of the following: a radio frequency unit 312a, a storage unit 312b, an audio unit 312c, and a secondary battery unit 312d.

[0223] The head-mounted display device 100 further includes a first heat sink 34. The first heat sink 34 includes a first plate body 342 and a first heat sink fin 341 connected to the first plate body 342, the first plate body 342 is connected to the heat dissipation fan 40, and the first heat sink fin 341 protrudes from a side surface of the first plate body 342 along the first direction, i.e., protrudes from a side surface of the first plate body 342 away from the first electrical unit 311,

[0224] The control assembly 30 includes a shielding body 33 covering a side surface of the first electrical unit 311 away from the circuit board, and a heat conductor 41 arranged between the first electrical unit 311 and the shielding body 33 and / or between the shielding body 33 and the first plate body 342 of the first heat sink 34.

[0225] The first display assembly 20 includes a support 21 and two light engine modules 22 distributed along the width direction, the support 21 has an air duct 21a, at least part of the light engine modules 22 is located in the air duct 21a, and the control assembly 30 is spaced apart from the support 21 along the first direction.

[0226] The air duct 21a extends along the width direction of the head-mounted display device 100, the support 21 has air duct inlets 21b at opposite ends along the width direction, the support 21 has an air duct outlet 21c communicating with the air duct 21a and the air outlet 14, and the air duct outlet 21c is located between the two light engine modules 22 along the width direction.

[0227] The optical engine module 22 includes a display screen 221 and a second heat sink 222 disposed on a side of the display screen 221 along the first direction, and a heat conductor 41 is disposed between the display screen 221 and the second heat sink 222. The second heat sink 222 includes a second heat sink fin 2221, and the second heat sink fin 2221 is located in the air duct 21a.

[0228] The face shield 50 has a plurality of air holes. At least one air hole is located between the two optical engine modules 22. Exemplarily, the face shield 50 includes a nose pad for cooperating with the nose of the wearer, and the air hole is formed by a cooperation gap between the nose pad and the nose of the wearer. At least one air hole is disposed on the top side of each of the two optical engine modules 22.

[0229] Referring to FIGS. 3, 5 and 6, when the heat dissipation fan 40 is working, a part of the airflow enters the shield cavity 50a through the air holes of the face shield 50, flows through the two optical engine modules 22, and then enters the electrical cavity 10a through the second air inlet. Another part of the airflow directly enters the electrical cavity 10a through the first air inlet.

[0230] The airflow entering the electrical cavity 10a flows from the positions of the two ends of the electrical cavity 10a along the width direction to the middle position. A part of the airflow enters the air duct 21a through the air duct inlet 21b, exchanges heat with the first display assembly 20, and then flows to the air outlet 14 through the air duct outlet 21c. Another part of the airflow flows to the air outlet 14 through the gap between the bracket 21 and the control assembly 30.

[0231] The heat dissipation fan 40 has a heat dissipation mode and a defogging mode. The power in the defogging mode is greater than that in the heat dissipation mode. In the heat dissipation mode, the flow amount of the gas in the shield cavity 50a is small. In the defogging mode, the flow amount of the gas in the shield cavity 50a is increased, so that rapid defogging is achieved. The user can start the defogging mode through a physical operation key or a virtual operation key provided on the head-mounted display device.

[0232] The following will continue to introduce other structures in the head-mounted display device 100 of the first embodiment.

[0233] In some embodiments, referring to FIGS. 1-4 and 10, the first display assembly 20 includes the optical engine module 22, and the head-mounted display device 100 includes an adjustment assembly 60 for adjusting the optical parameters of the optical engine module 22.

[0234] Here, the optical parameters of the optical engine module 22 include, but are not limited to, the interpupillary distance, the diopter, etc. The specific structural form of the adjustment assembly 60 can be determined by those skilled in the art according to the optical parameters to be adjusted in practice, and the present embodiment does not limit this.

[0235] In the embodiment, the optical parameters of the optical-mechanical module 22 can be adjusted by the adjusting assembly 60, so that the adaptability of the head-mounted display device 100 to wearers with different visual conditions is improved.

[0236] In some embodiments, referring to FIG. 5, FIG. 6 and FIG. 10, the first display assembly 20 includes two optical-mechanical modules 22 distributed along the width direction of the head-mounted display device 100, and each optical-mechanical module 22 includes a display screen 221 and a lens group 223 arranged opposite to the display screen 221.

[0237] Here, the lens group 223 is specifically arranged on one side of the display screen 221 along the second direction, and the light emitted by the display screen 221 enters the wearer's glasses after being refracted by the lenses in the lens group 223. The specific arrangement of the lens group 223 can refer to the related technology in the art, which will not be described here.

[0238] For example, referring to FIG. 6, along the direction away from the display screen 221 (i.e., along the second direction), the lens group 223 includes a first lens 2231, a second lens 2232 and a third lens 2233 in sequence. For example, the first lens 2231 and the third lens 2233 are resin lenses, and the second lens 2232 is a glass lens. For example, the first lens 2231 and the third lens 2233 are convex lenses, and the second lens 2232 is a plane lens. The adjusting assembly 60 is used to adjust the interval of the lens groups 223 of the two optical-mechanical modules 22 along the width direction, and / or the adjusting assembly 60 is used to adjust the refractive power of the lens groups 223 of the two optical-mechanical modules 22.

[0239] In the embodiment, the adjusting assembly 60 can adjust the interpupillary distance and / or the refractive power, so that the adaptability of the head-mounted display device 100 to wearers with different visual conditions is improved.

[0240] In some embodiments, referring to FIG. 10, the adjusting assembly 60 includes two adjusting knobs 61 respectively in transmission connection with the lens groups 223 of the two optical-mechanical modules 22. When the adjusting knob 61 is rotated, at least one lens in the lens group 223 is driven to move to change the refractive power of the lens group 223. In addition, the adjusting knob 61 is in sliding connection with the shell 10 along the width direction, and when the adjusting knob 61 moves relative to the shell 10 along the width direction, the lens group 223 is driven to move along the width direction.

[0241] Referring to FIG. 10, the adjustment assembly 60 includes a guide rail 62 extending along the width direction of the head-mounted display device 100, the first display assembly 20 includes a support 21, the guide rail 62 is arranged on the support 21, and the optical engine module 22 is in sliding cooperation with the guide rail 62 along the width direction of the head-mounted display device 100. Further, the adjustment assembly 60 can include a plurality of guide rails 62 distributed along the height direction of the head-mounted display device, so as to improve the sliding stability of the optical engine module 22. Further, at least one guide rail 62 can be in sliding cooperation with two optical engine modules 22 at the same time, or at least one guide rail 62 can be in sliding cooperation with only one optical engine module 22. The person skilled in the art can make specific settings according to the actual space arrangement requirements. In some embodiments, the plurality of guide rails 62 includes at least one long guide rail and at least one set of short guide rails, the long guide rail is arranged to be capable of being in sliding cooperation with two optical engine modules 22 at the same time, each set of short guide rails includes two short guide rails for being in sliding cooperation with the optical engine module 22 respectively, and the length of the long guide rail along the sliding cooperation direction (i.e., the width direction) is greater than the length of the short guide rail. Referring to FIG. 10, the housing 10 includes a nose pad region, the long guide rail is arranged on the top side of the nose pad region, and the short guide rails are arranged on the opposite sides of the nose pad region along the width direction, so as to realize the avoidance of the nose pad region.

[0242] The adjustment knob 61 is connected to at least one lens in the lens group 223 through a gear set 63. When the adjustment knob 61 is rotated, the gear set 63 is driven to rotate, and in turn drives the lens to rotate around the optical axis of the lens. The lens is arranged to have different refractive indexes at different circumferential positions, so that when the lens is rotated, the dioptric power of the lens group 223 changes, realizing dioptric power adjustment.

[0243] When the adjustment knob 61 is pushed along the width direction of the housing 10, the gear set 63 does not rotate, and the force is transmitted to the optical engine module 22, thereby driving the optical engine module 22 to slide along the guide rail 62, so that the distance between the two optical engine modules 22 along the width direction changes, realizing pupil distance adjustment.

[0244] In this embodiment, only one set of adjustment knobs 61 is arranged to realize pupil distance adjustment and dioptric power adjustment, so as to help simplify the structure of the adjustment assembly 60 and improve the operation convenience of the wearer when adjusting the optical parameters, and reduce the learning cost.

[0245] In some embodiments, referring to FIGS. 1 and 11, the head-mounted display device 100 includes a second display assembly 70 arranged on the housing 10, and the second display assembly 70 has a second window 70a exposed to at least one outer surface of the housing 10.

[0246] It can be understood that, since the second window 70a of the second display assembly 70 is exposed to the outer surface of the shell 10, the content displayed by the second display assembly 70 can be observed by a non-wearer. The specific structural form of the second display assembly 70 is not limited, as long as the image display can be realized.

[0247] The second window 70a of the second display assembly 70 can be exposed to one of the outer surfaces of the shell 10, or can be exposed to multiple outer surfaces of the shell 10 at the same time, which is not limited.

[0248] The number of the second display assembly 70 can be one or multiple.

[0249] The second display assembly 70 can be specifically provided with multiple display states such as image transmission display state, parameter display state, query display state, wallpaper display state, and the like, which will be described in more detail and specifically in the related part below, and will not be repeated here.

[0250] In the case where the number of the second display assembly 70 is multiple, different second display assemblies 70 can be configured to have different display states, and / or the display states of different second display assemblies 70 can be independently controlled.

[0251] In the embodiment, by adding the second display assembly 70, the use scenario of the head-mounted display device 100 can be expanded, and the playability of the head-mounted display device 100 can be improved.

[0252] In some embodiments, the first display assembly 20, the control assembly 30 and the second display assembly 70 are sequentially arranged along the first direction, and the control assembly 30 is located between the first display assembly 20 and the second display assembly 70. In this way, the installation space of the second display assembly 70 can be saved, and the size of the display interface of the second display assembly 70 can also be increased.

[0253] In some embodiments, referring to FIG. 11, the second window 70a is arranged towards the first direction. In this way, the display area of the second window 70a can be improved, and the second window 70a can be more easily observed by a non-wearer.

[0254] Exemplarily, the shell 10 includes two view regions 10b distributed along the width direction of the head-mounted display device 100, and the second display assembly 70 is arranged in at least one view region 10b. It can be understood that, in this embodiment, the second display assembly 70 and the optical-mechanical module 22 of the first display assembly 20 are relatively arranged along the first direction.

[0255] Exemplarily, the housing 10 comprises a front housing 11, the front housing 11 comprises a third frame body 111 and a fourth frame body 113, and the second display assembly 70 is arranged in at least one of the third frame body 111 and the fourth frame body 113.

[0256] In some embodiments, referring to FIG. 11, the second display assembly 70 comprises an outer screen assembly 71 and an outer screen adapter 72 (e.g., an FPC), the outer screen adapter 72 electrically connects the outer screen assembly 71 with the control assembly 30, and the control assembly 30 is configured to control the second display assembly 70 to display an image.

[0257] In some embodiments, referring to FIG. 11, the head-mounted display device 100 comprises an interaction assembly 80 for receiving an interaction instruction, the interaction instruction being used to control a display state of the first display assembly 20 and / or the second display assembly 70.

[0258] Here, the interaction assembly 80 can be any structure capable of interacting with the wearer and / or the non-wearer, and the specific interaction manner of the interaction assembly 80 interacting with the wearer and / or the non-wearer is not limited, such as contact interaction (e.g., interacting through touch, keys, dials, scroll wheels, etc.) and non-contact interaction (e.g., interacting through wireless signals).

[0259] The specific control manner of controlling the display state of the first display assembly 20 and / or the second display assembly 70 based on the interaction instruction of the interaction assembly 80 will be described in more detail and specifically in the relevant part below, and will not be described here again.

[0260] In this embodiment, the wearer can flexibly control the display state of the first display assembly 20 and / or the second display assembly 70 through the interaction assembly 80, so as to further improve the playability of the head-mounted display device 100.

[0261] In some embodiments, referring to FIG. 11, the interaction assembly 80 has an operation surface 80a exposed to at least one outer surface of the housing 10. Here, the operation surface 80a specifically refers to a surface for the wearer or the non-wearer to input an interaction instruction in a contact manner (e.g., touch, press, dial, etc.).

[0262] In this embodiment, the interaction assembly 80 realizes interaction through the operation surface 80a, and the operation surface 80a is exposed to at least one outer surface of the housing 10, so that both the wearer and the non-wearer can more conveniently interact with the interaction assembly 80, further expanding the use scenarios of the head-mounted display device 100 and improving the playability of the head-mounted display device 100.

[0263] In some embodiments, referring to FIG. 11, the operation surface 80a is arranged towards the second direction, so that the interaction convenience can be further improved, especially the interaction convenience of the non-wearer.

[0264] In some embodiments, referring to FIG. 11, the interaction assembly 80 comprises a touchpad 81, and the operation surface 80a is a touch surface of the touchpad 81. In this way, on the one hand, the interaction convenience can be improved, and on the other hand, the appearance of the head-mounted display device 100 can also be improved.

[0265] It should be noted that the arrangement of the interaction assembly 80 is not limited to this, for example, in some other embodiments, the interaction assembly 80 comprises a touch sensing structure arranged on the second display assembly 70, so that at least part of the area of the second window 70a of the second display assembly 70 forms the operation surface 80a. In some other embodiments, the interaction assembly 80 comprises an interaction surface and an interaction button, an interaction knob, an interaction lever, etc. arranged on the interaction surface.

[0266] In some embodiments, referring to FIG. 11, the interaction assembly 80 comprises a touchpad 81 and a touch switching piece 82 (for example, an FPC), and the touch switching piece 82 electrically connects the touchpad 81 and the control assembly 30. The control assembly 30 is configured to obtain the interaction instruction received by the interaction assembly 80, and control the display state of the first display assembly 20 and / or the second display assembly 70 according to the interaction instruction.

[0267] The specific structure of the touchpad 81 is not limited, and in some embodiments, referring to FIG. 11, the touchpad 81 comprises a cover plate 811, a touch sensing plate 812, and a first adhesive 813 connecting the cover plate 811 and the touch sensing plate 812. The cover plate 811 covers one side surface of the touch sensing plate 812 in the thickness direction, and the side surface of the cover plate 811 away from the touch sensing plate 812 in the thickness direction forms a touch surface. Here, the touch sensing plate 812 can be specifically arranged to realize the sensing of the touch operation by sensing capacitance, resistance, voltage, pressure, light, etc.

[0268] In some embodiments, referring to FIG. 12, the interaction assembly 80 further comprises an indication device 83 for indicating the current display state of the first display assembly 20 and / or the second display assembly 70. In this way, the operation convenience of the head-mounted display device 100 can be improved.

[0269] Exemplarily, referring to FIG. 12, the indicating device 83 comprises an indicating light, the indicating light comprises a light plate 831, a light guide plate 832 and a second glue 833 connecting the light plate 831 and the light guide plate 832, the light guide plate 832 is arranged as a light transmission structure, and the light guide plate 832 is exposed to at least one outer surface of the housing 10. In this way, on the one hand, the operation convenience of the non-wearer is improved, and on the other hand, the aesthetic degree of the head-mounted display device 100 is improved.

[0270] In some embodiments, referring to FIG. 12, the indicating light extends along the outer periphery of the touchpad 81 to form a ring-shaped closed structure. In this way, the aesthetic degree is further improved.

[0271] In some embodiments, referring to FIG. 12, the housing 10 has two view areas 10b distributed along the width direction of the head-mounted display device 100, the second display assembly 70 is arranged in one of the view areas 10b, and the interaction assembly 80 is arranged in the other view area 10b.

[0272] Exemplarily, the housing 10 comprises a front housing 11, the front housing 11 comprises a third frame 111 and a fourth frame 113, the third frame 111 and the fourth frame 113 are arranged in the two view areas 10b respectively, the interaction assembly 80 is fixed to one of the third frame 111 and the fourth frame 113, and the second display assembly 70 is fixed to the other one of the third frame 111 and the fourth frame 113.

[0273] Further exemplarily, the front housing 11 comprises a locking member, the locking member is used to lock the interaction assembly 80 and the second display assembly 70 to the third frame 111 and the fourth frame 113 respectively. The specific structural form of the locking member is not limited, as long as it can realize the locking of the interaction assembly 80 and the display assembly.

[0274] In this embodiment, it is helpful to expand the area of the operation surface 80a of the interaction assembly 80, facilitate the operation of the wearer and the non-wearer, and improve the aesthetic degree of the head-mounted display device 100.

[0275] In some embodiments, referring to FIG. 1 and FIG. 10, the head-mounted display device 100 comprises an antenna 90, the antenna 90 is used at least to receive the image transmission data sent by the movable platform, and the first display assembly 20 is used at least to display the image transmission data. Here, the specific structural form of the antenna 90 is not limited, and the number of the antenna 90 can be one or more.

[0276] In some embodiments, the at least one antenna 90 is also configured to transmit data information to the movable platform and / or receive data information transmitted by the movable platform, and the at least one antenna 90 is also configured to receive data information from other control terminals, for example, the at least one antenna is configured to receive data information from and / or transmit data information to a body-sensing remote controller. In some embodiments, the aforementioned data information includes at least one of the following: control instructions, attitude information, state information, image data, flight log, etc. For example, the aforementioned control instructions include, but are not limited to, instructions for controlling the movement of the movable platform, instructions for controlling the movement of a photographing device carried by the movable platform (e.g., turning to change the viewing angle), instructions for controlling the image capture of a photographing device carried by the movable platform, etc.

[0277] In some embodiments, the antenna 90 is electrically connected to the control assembly 30, for example, through a coaxial line, and the image transmission data received by the antenna 90 can be transmitted to the control assembly 30, and the control assembly 30 controls the first display assembly 20 to display the image transmission data.

[0278] In some embodiments, the antenna 90 includes at least one omnidirectional antenna. Here, the omnidirectional antenna specifically refers to a structure that exhibits relatively uniform radiation of 360° in the horizontal direction diagram, without obvious directivity.

[0279] In the present embodiment, by providing at least one omnidirectional antenna, continuous communication with the movable platform during the movement of the movable platform can be achieved.

[0280] In some embodiments, the antenna 90 includes at least one directional antenna. Here, the directional antenna specifically refers to an antenna that has relatively strong signal transmission and reception capability in one or several specific directions, and relatively weak or even zero signal transmission and reception capability in other directions.

[0281] The number of directional antennas can be one or multiple. In the case where the number of directional antennas is multiple, the radiation directions of the directional antennas can be different or not completely the same.

[0282] The radiation direction of the directional antenna specifically refers to the direction indicated by the main lobe in the antenna diagram of the directional antenna. The main lobe specifically refers to a signal lobe with radiation intensity exceeding a certain set value. The direction indicated by the main lobe specifically refers to the direction indicated by the line connecting the center point of the antenna diagram and the point with the highest radiation intensity in the main lobe. In some embodiments, the antenna diagram of the directional antenna can have two or more main lobes, i.e., one directional antenna can have two or more radiation directions. In some embodiments, the antenna diagram of the directional antenna has only one main lobe, i.e., one directional antenna has only one radiation direction.

[0283] In the embodiment, by setting at least one directional antenna, signal enhancement in a specific direction can be achieved, and the communication stability of the head-mounted display device 100 and the movable platform can be improved.

[0284] In some embodiments, the at least one antenna 90 is arranged in the electrical cavity 10a. For example, the antenna 90 includes at least one directional antenna, and the directional antenna is arranged in the electrical cavity 10a.

[0285] In some embodiments, the head-mounted display device 100 includes an antenna housing connected to the shell 10, and the at least one antenna 90 is arranged in the antenna housing. For example, the antenna 90 includes at least one omnidirectional antenna, and the omnidirectional antenna is arranged in the antenna housing. In such an embodiment, the omnidirectional antenna is arranged as an external antenna, which helps to reduce signal shielding of the omnidirectional antenna and thus improve the signal radiation intensity of the omnidirectional antenna.

[0286] Further, in some embodiments, the antenna housing is rotationally connected to the shell 10, so that the omnidirectional antenna has an unfolded position and a folded position (in the embodiment shown in FIG. 1, the omnidirectional antenna is in the unfolded position), facilitating storage.

[0287] In some embodiments, with reference to FIG. 7, the omnidirectional antenna (in the unfolded position) is arranged to be inclined toward a second direction compared to a reference surface. In other words, the omnidirectional antenna is arranged to be inclined toward the rear. It can be understood that in most use scenarios, the front side of the head-mounted display device 100 is toward the movable platform and / or other target objects. Therefore, the omnidirectional antenna is arranged to be inclined toward the rear in the embodiments of the present disclosure, which helps to further reduce shielding and improve the intensity of the radiation signal toward the movable platform in the front side.

[0288] In some embodiments, with reference to FIG. 1, the antenna 90 includes a first omnidirectional antenna 90a and a second omnidirectional antenna 90b, and the first omnidirectional antenna 90a and the second omnidirectional antenna 90b are distributed along the width direction of the head-mounted display device 100.

[0289] For example, the first omnidirectional antenna 90a and the second omnidirectional antenna 90b can be arranged on the top side of the shell 10, and in the orthographic projection along the first direction, the first omnidirectional antenna 90a and the second omnidirectional antenna 90b extend toward directions away from each other (in the unfolded position). That is, the first omnidirectional antenna 90a and the second omnidirectional antenna 90b are distributed in a horn shape.

[0290] In the embodiment, by arranging two omnidirectional antennas distributed along the width direction of the head-mounted display device 100, the signal intensity can be further improved, and such an arrangement helps to improve the aesthetics.

[0291] In some embodiments, the antenna 90 includes at least one directional antenna, a radiation direction of the at least one directional antenna is parallel to the first reference plane, and / or, the radiation direction of the at least one directional antenna is inclined to the second direction relative to the first reference plane, and / or, the radiation direction of the at least one directional antenna is toward the second direction. The first reference plane is perpendicular to the first direction.

[0292] Those skilled in the art should understand that the above three radiation directions can improve the signal coverage of the head-mounted display device 100 in the side, side-rear and rear directions to some extent (since the directional antenna can provide good radiation intensity within a certain angle range near the radiation direction, even if the radiation direction is toward the positive side or the positive rear, the signal coverage in the side-rear direction can also be improved to some extent).

[0293] It is proposed in the present disclosure that, in actual use, the wearer can turn the head to cause the side, side-rear or rear of the head-mounted display device 100 to face the movable platform, or the movable platform can move to the side, side-rear or rear of the wearer. For example, in some embodiments, the movable platform is configured to be able to capture a panoramic image (for example, configured as a panoramic unmanned aerial vehicle), the head-mounted display device 100 can display an image of a certain perspective in the panoramic image, and the user can adjust the perspective currently displayed by the head-mounted display by turning the head. In such embodiments, the scenario in which the side, side-rear or rear of the head-mounted display device 100 faces the movable platform will occur frequently.

[0294] The head-mounted display device 100 provided in the related art generally has good signal coverage only in the front direction, and in the above use scenarios in which the side, side-rear or rear of the head-mounted display device 100 faces the movable platform, the head-mounted display device 100 can have image lag due to poor signal, affecting the user experience.

[0295] However, in the head-mounted display device 100 of the embodiments of the present disclosure, directional antennas with radiation directions toward the side and / or side-rear and / or rear are provided, so that the signal coverage of the head-mounted display device 100 in the side, side-rear and rear directions can be improved, and the head-mounted display device 100 can still stably receive downlink data when used in the side, side-rear or rear direction facing the movable platform, improving the user experience.

[0296] In some embodiments, referring to FIG. 10, the antenna 90 includes a first directional antenna 90c and a second directional antenna 90d with intersecting radiation directions, the radiation directions of the first directional antenna 90c and the second directional antenna 90d are both inclined to the second direction relative to the first reference plane, and the included angles between the radiation directions of the first directional antenna 90c and the second directional antenna 90d and the first reference plane are the same.

[0297] In this embodiment, the radiation directions of the first directional antenna 90c and the second directional antenna 90d are respectively towards the left rear and the right rear, and the radiation directions of the first directional antenna 90c and the second directional antenna 90d are the same with the included angle with the reference plane, that is, the first directional antenna 90c and the second directional antenna 90d are symmetrically arranged relative to the front-rear direction of the head-mounted display device 100, which will help to further improve the omnidirectionality of the signal, so that the head-mounted display device 100 can maintain relatively stable signal transmission when any one side of the head-mounted display device 100 is directed towards the movable platform.

[0298] In some embodiments, the antenna 90 includes a first directional antenna 90c and a second directional antenna 90d, the radiation directions of the first directional antenna 90c and the second directional antenna 90d are respectively inclined towards the second direction relative to the first reference plane, and the first directional antenna 90c and the second directional antenna 90d are respectively arranged at opposite ends of the shell 10 along the width direction.

[0299] In this embodiment, the first directional antenna 90c and the second directional antenna 90d are respectively arranged at opposite ends of the shell 10 along the width direction, which helps to reduce the shielding of the radiation directions of the first directional antenna 90c and the second directional antenna 90d, thereby helping to improve the signal strength of the two.

[0300] In some embodiments, referring to FIG. 5, the head-mounted display device 100 includes two loudspeakers 91 arranged at opposite sides of the first display assembly 20 along the width direction, and the first directional antenna 90c and the second directional antenna 90d are respectively arranged at the side of the two loudspeakers 91 away from the first display assembly 20 along the width direction, and the loudspeakers 91 are arranged to be capable of reflecting the signals of the first directional antenna 90c and the second directional antenna 90d.

[0301] In this embodiment, by using the loudspeakers 91 as the reflectors of the first directional antenna 90c and the second directional antenna 90d, the signal strength is improved and the internal space of the electrical cavity 10a is saved (without the need to additionally arrange a reflecting plate for the first directional antenna 90c and the second directional antenna 90d).

[0302] In some embodiments, the radiation direction of at least one directional antenna is a first direction, and / or the radiation direction of at least one directional antenna is inclined towards the first direction relative to the first reference plane.

[0303] In this embodiment, the head-mounted display device 100 is further provided with directional antennas 90 radiating towards the front or the front side, which helps to further improve the omnidirectionality of the signal synthesis diagram of the head-mounted display device 100.

[0304] In some embodiments, referring to FIG. 10, the antenna 90 includes a third directional antenna 90e and a fourth directional antenna 90f, the radiation directions of the third directional antenna 90e and the fourth directional antenna 90f are both towards the first direction, and the polarization manners of the third directional antenna 90e and the fourth directional antenna 90f are complementary.

[0305] For example, the third directional antenna 90e and the fourth directional antenna 90f can be arranged at the middle position of the housing 10 along the width direction, for example, between the two view zones 10b.

[0306] In the embodiment, two directional antennas 90 are arranged, which radiate towards the front and have complementary polarization manners, so that the limit transmission distance in front of the head-mounted display device 100 can be improved, and the signal transmission range of the head-mounted display device 100 can be improved.

[0307] In some embodiments, referring to FIG. 10, the third directional antenna 90e and the fourth directional antenna 90f are arranged at one side of the heat dissipation fan 40 along the first direction, and the heat dissipation fan 40 is configured to reflect the signals of the third directional antenna 90e and the fourth directional antenna 90f.

[0308] In the embodiment, the heat dissipation fan 40 is used as a reflector of the third directional antenna 90e and the fourth directional antenna 90f, which helps to improve the signal strength and save the internal space of the electrical cavity 10a (without the need to additionally arrange a reflector plate for the third directional antenna 90e and the fourth directional antenna 90f).

[0309] In some embodiments, referring to FIG. 12, the third directional antenna 90e and the fourth directional antenna 90f are arranged in an integrated structure. For example, the third directional antenna 90e and the fourth directional antenna 90f each include a substrate and a radiating line body arranged on the substrate, and the substrates of the third directional antenna 90e and the fourth directional antenna 90f are formed in an integrated structure, that is, the third directional antenna 90e and the fourth directional antenna 90f share one substrate.

[0310] In the embodiment, by arranging the third directional antenna 90e and the fourth directional antenna 90f in an integrated structure, the assembly difficulty, space and cost can be reduced, and the stability of the relative positions of the third directional antenna 90e and the fourth directional antenna 90f can be maintained.

[0311] In some embodiments, specifically, the third directional antenna 90e is arranged in +45° polarization, and the fourth directional antenna 90f is arranged in -45° polarization.

[0312] The specific implementation of the above polarization angle can refer to the related technology in the art, which will not be described here.

[0313] In the related art, the polarization complementarity of the two antennas 90 is usually achieved in a vertical and horizontal manner, but as mentioned above, the radiation directions of the third directional antenna 90e and the fourth directional antenna 90f are towards the first direction, under this premise, it is relatively easy to set the third directional antenna 90e and the fourth directional antenna 90f to ±45° polarization, which helps to reduce the difficulty of preparation and production.

[0314] Of course, in some other embodiments, the third directional antenna 90e and the fourth directional antenna 90f can also be set to complement in a horizontal and vertical polarization manner, or to achieve polarization complementarity in any other suitable manner provided in the related art.

[0315] In some embodiments, referring to FIGS. 2 and 5, the head-mounted display device 100 further comprises a speaker 91 and / or a microphone 92 arranged on the housing 10. In this way, the head-mounted display device 100 can achieve audio acquisition and / or playback.

[0316] In some embodiments, referring to FIG. 5, the speaker 91 is arranged in the electrical cavity 10a and connected to the control assembly 30 (for example, connected to the audio unit 312c of the control assembly 30).

[0317] In some embodiments, referring to FIG. 5, at least one speaker 91 is arranged on each of the opposite sides of the first display assembly 20 along the width direction of the head-mounted display device 100, so that a surround sound effect can be achieved to improve the auditory experience of the wearer.

[0318] In some embodiments, referring to FIG. 5, the microphone 92 is arranged in the electrical cavity 10a and connected to the control assembly 30 (for example, connected to the audio unit 312c of the control assembly 30).

[0319] In some embodiments, referring to FIGS. 1 and 12, the head-mounted display device 100 is configured to be communicatively connected with a movable platform to obtain a first image captured by a shooting device carried by the movable platform. The head-mounted display device 100 further comprises an image sensor 93 arranged on the housing 10, the image sensor 93 is used to acquire a second image, and the first display assembly 20 is configured to display the first image and / or the second image.

[0320] It can be understood that here, the second image acquired by the image sensor 93 arranged on the housing 10 is an environmental image of the current environment of the wearer.

[0321] In this embodiment, the first display component 20 can display one of the first image and the second image, or simultaneously display the first image and the second image, so that the wearer can understand the current external environment by observing the second image in the case of wearing the head-mounted display device 100, thereby improving the safety of the wearer, especially when the wearer is moving while wearing the head-mounted display device 100.

[0322] In some embodiments, specifically, the wearer can switch the display of the first display component 20 between the first image and the second image by sending instructions to the control component 30, for example, sending interaction instructions to the control component 30 by means of the interaction component 80 mentioned above.

[0323] In some embodiments, it can be understood that when the first display component 20 displays the second image, the wearer can not continue to pay attention to the movement of the movable platform, resulting in the movable platform may lose control, collision, etc., therefore, in some embodiments, in response to the first display component 20 displaying the second image, a safety instruction can be sent to the movable platform (for example, by sending a safety instruction to the movable platform by the control component 30), control the movable platform to perform a safety action, for example, the movable platform is an unmanned aerial vehicle, the safety action includes but is not limited to hovering action, return action, landing action. In this way, the probability of the movable platform losing control or colliding when the wearer fails to observe the video in time can be reduced.

[0324] In this embodiment, the number of image sensors 93 can be one or more, in the case of multiple image sensors 93, multiple image sensors 93 can be arranged on different surfaces of the housing 10, so as to realize the collection of environmental images in different directions, or even realize the collection of panoramic images of the external environment.

[0325] In some embodiments, at least one image sensor 93 is exposed to the side surface of the housing 10 along the first direction. In this way, the second image can at least include the environmental image of the front view, which is convenient for the wearer to proceed in the case of wearing the head-mounted display device 100.

[0326] In some embodiments, at least one image sensor 93 is also used to collect control instructions of a control device associated with the head-mounted display device 100.

[0327] Here, the control device associated with the head-mounted display device 100 includes, but is not limited to, a handle, a remote controller, etc. The control instruction of the control device can be used to control the head-mounted display device 100, and / or the control instruction of the control device is used to control the movable platform in communication connection with the head-mounted display device 100. Exemplarily, the head-mounted display device 100 can forward the collected control instruction to the movable platform (for example, through the antenna 90 to the movable platform).

[0328] The specific implementation of the image sensor 93 for collecting the control instruction is not limited. Exemplarily, the control instruction of the control device includes the motion trajectory of the control device, and the image sensor 93 is configured to be able to collect the motion trajectory. Exemplarily, the control instruction of the control device includes the control pattern displayed by the control device, and the image sensor 93 is configured to be able to collect the control pattern. Exemplarily, the control instruction of the control device includes the light signal (for example, infrared signal, laser signal, etc.) sent by the control device, and the image sensor 93 is configured to be able to collect the signal.

[0329] In some embodiments, the image sensor 93 can also be used to collect preset gesture information or preset image information as the control instruction. Unlike the control instruction of the control device, the gesture information can be issued by the user through his own hand, and the preset image information can be issued by other external devices (which do not necessarily have to be associated with the head-mounted display device). In this way, diversified control of the head-mounted display device and / or the movable platform is achieved. In some embodiments, the head-mounted display device 100 can also obtain the voice instruction of the user as the control instruction.

[0330] In some embodiments, referring to FIGS. 3 and 4, the head-mounted display device 100 includes a human body detection sensor 94 arranged on the housing 10, and the human body detection sensor 94 is exposed to the side surface of the housing 10 along the second direction opposite to the first direction.

[0331] Here, the human body detection sensor 94 is used to detect whether the head-mounted display device 100 is worn by the wearer. Exemplarily, the head-mounted display device 100 can determine whether the head-mounted display device 100 is worn based on the detection result of the human body detection sensor 94, and automatically switch the use mode of the head-mounted display device 100, for example, automatically turn on / off, automatically switch the display mode of the first display assembly 20 and / or the second display assembly 70, etc.

[0332] The specific structure of the human body detection sensor 94 is not limited, as an example, referring to FIG. 13, the human body detection sensor 94 includes a distance sensor 941 and a distance sensing adapter 942 (for example, FPC), the distance sensing adapter 942 electrically connects the distance sensor 941 with the control assembly 30, the distance sensor can detect the distance between the head-mounted display device 100 and the wearer, and the control assembly 30 can determine whether the head-mounted display device 100 is currently worn according to the detection result of the distance sensor.

[0333] Second embodiment

[0334] The second embodiment of the present disclosure provides a movable platform system, referring to FIG. 13, which includes the head-mounted display device 100 of the first embodiment of the present disclosure, and a movable platform 200, the movable platform 200 is equipped with a shooting device 201, and the image shot by the shooting device 201 can be transmitted to the first display assembly for display.

[0335] In some embodiments, referring to FIG. 13, the movable platform system includes a remote control device 300, which is communicatively connected with the head-mounted display device 100 and / or the movable platform 200, to send signals (for example, control signals) to the head-mounted display device 100 and / or the movable platform 200, and / or receive signals (for example, image signals) sent by the head-mounted display device 100 and / or the movable platform 200.

[0336] In some embodiments, referring to FIG. 13 and FIG. 14, the movable platform 200 and / or the head-mounted display device 100 are configured to be communicatively connected with a terminal device 400, which includes but is not limited to a mobile phone, a notebook computer, and a tablet computer. For example, the movable platform 200 and / or the head-mounted display device 100 can send signals (for example, image data) to the terminal device 400, and / or receive signals (for example, control signals) sent by the terminal device 400.

[0337] In some embodiments, referring to FIG. 14, the communicative connection between the movable platform 200 and / or the head-mounted display device 100 and the terminal device 400 can be realized based on a cloud server 500.

[0338] In some embodiments, the movable platform 200 includes but is not limited to an aircraft, a vehicle, a ship, a mobile robot, and a handheld stabilizer.

[0339] In some embodiments, referring to FIG. 15, the movable platform 200 carries multiple shooting devices 201 for capturing panoramic images. Panoramic images include horizontal panorama (horizontal 360°, limited vertical FOV), cylindrical projection panorama (cylindrical unwrapping), partial spherical panorama (cover horizontal 360° and a certain range of vertical FOV), and full spherical panorama (horizontal 360° x vertical 180° full spherical coverage).

[0340] In some embodiments, referring to FIG. 16, the movable platform 200 carries multiple shooting devices for capturing a spherical panorama image, which can cover 360° in horizontal plane and at least 180° in vertical plane without blind spots. The display of the first display component 20 and / or the second display component 70 in some embodiments can be a view obtained based on a certain perspective of the panorama image (e.g., the display shown in FIG. 16). In some embodiments, the display of the first display component 20 and / or the second display component 70 can be based on a virtual camera orientation determination. In some embodiments, head pose data of a user wearing a head-mounted display device can be mapped to control the target perspective of the virtual camera, so that the perspective is switched synchronously with the rotation of the user’s head to look around the panorama image. In some embodiments, the user can also adjust the virtual camera orientation through touch terminal (e.g., sliding / pressing operation of a mobile phone / remote controller) or movable platform control device (e.g., a roller to adjust the pitch angle) to achieve non-immersive environment observation. In some embodiments, the system can dynamically control the virtual camera orientation according to the spatial relationship between the movable platform and the target subject, thereby reducing the frequency of manual operation by the user. For example, when the movable platform tracks a person, the system automatically focuses on the subject perspective. For another example, when the movable platform flies according to a preset trajectory, the system automatically focuses on the point of interest. In some embodiments, the system can control the virtual camera orientation according to the flight trajectory of the movable platform, for example, when the movable platform lands, the system automatically focuses on the ground direction perspective.

[0341] In some embodiments, referring to FIG. 16, taking a panoramic drone as an example, in response to a user's view angle adjustment operation, the direction information of the virtual camera is acquired, and a first picture is displayed based on the direction information, the first picture being a picture corresponding to the virtual camera. The view angle direction corresponding to the first picture is independent of the reference direction of the drone (in this embodiment, the flight direction of the drone). That is, the user's view angle is decoupled from the flight direction of the drone, and the two are independently controlled. When the user turns his head to adjust the view angle, the flight path is not affected, and vice versa. In some embodiments, the aforementioned reference direction of the drone further includes at least one of the following directions: the nose direction of the drone, the tail direction of the drone, the ground direction at an angle of -90° between the pitch axis and the nose direction, the sky direction at an angle of +90° between the pitch axis and the flight direction, the port direction at an angle of -90° between the yaw axis and the nose direction, and the starboard direction at an angle of +90° between the yaw axis and the nose direction.

[0342] It should be noted that the description of the movable platform system and the movable platform in this embodiment is applicable to any one of the embodiments of the present disclosure.

[0343] Third embodiment

[0344] The third embodiment of the present disclosure provides a head-mounted display device, referring to FIGS. 1-12, the head-mounted display device includes a device main body, a first display component 20, a second display component 70, and an interaction component 80.

[0345] The device main body includes a plurality of outer surfaces and an inner surface facing the wearer's face, the first display component 20 has a first view window 20a exposed to the inner surface, the first display component 20 is configured to display an image, the second display component 70 has a second view window 70a exposed to at least one outer surface, the second display component 70 is configured to display an image, and the interaction component 80 is used to receive an interaction instruction, the interaction instruction being used to control the display state of the first display component 20 and / or the second display component 70.

[0346] For example, the device main body includes the housing 10 described in the first embodiment of the present disclosure. For another example, the device main body includes the housing 10 and the face shield 50 described in the first embodiment of the present disclosure.

[0347] In the head-mounted display device of the present embodiment, the first display component 20 capable of being observed by the wearer and the second display component 70 capable of being observed by the non-wearer are provided, and the display state of the first display component 20 and / or the second display component 70 can be controlled through the interaction component 80. In this way, the use scenario of the head-mounted display device can be expanded, and the playability of the head-mounted display device can be improved.

[0348] In some embodiments, the second window 70a is oriented in the opposite direction of the first window 20a. For example, the first window 20a is oriented in the second direction mentioned above, and the second window 70a is oriented in the first direction mentioned above.

[0349] In the present embodiment, by orienting the second window 70a in the opposite direction of the first window 20a, the display area of the second window 70a is increased, and the second window 70a is more easily observed by non-wearers.

[0350] In some embodiments, the interaction component 80 has an operation surface 80a exposed to at least one outer surface. In the present embodiment, the interaction component 80 interacts through the operation surface 80a, which is exposed to at least one outer surface of the housing 10. In this way, both wearers and non-wearers can more easily interact with the interaction component 80, further expanding the use scenarios of the head-mounted display device and improving the playability of the head-mounted display device.

[0351] In some embodiments, the interaction component 80 includes a touchpad 81, and the operation surface 80a is a touch surface of the touchpad 81. In this way, on the one hand, it helps to improve the convenience of interaction, and on the other hand, it also helps to improve the aesthetic level of the head-mounted display device.

[0352] In some embodiments, the operation surface 80a is oriented in the opposite direction of the first window 20a. For example, the first window 20a is oriented in the second direction, and the operation surface 80a is oriented in the first direction. In this way, the convenience of interaction can be further improved, especially the convenience of interaction for non-wearers.

[0353] In some embodiments, the head-mounted display device includes a control component 30, and the first display component 20, the control component 30, and the second display component 70 are sequentially arranged along the first direction, with the control component 30 located between the first display component 20 and the second display component 70. In this way, the installation space of the second display component 70 is saved, and the size of the display interface of the second display component 70 can also be increased.

[0354] In some embodiments, the device body has two viewing zones 10b distributed along the width direction of the head-mounted display device, the second display component 70 is arranged in one of the viewing zones 10b, and the interaction component 80 is arranged in the other viewing zone 10b. In the present embodiment, the area of the operation surface 80a of the interaction component 80 is expanded, which is convenient for wearers and non-wearers to operate, and the aesthetic level of the head-mounted display device is improved.

[0355] The technical details of the device body, the first display assembly 20, the second display assembly 70 and the interaction assembly 80 mentioned above, as well as the technical details of other structures in the head-mounted display device can refer to the related description in the first embodiment of the present disclosure, and will not be repeated here.

[0356] Fourth embodiment

[0357] The fourth embodiment of the present disclosure provides a movable platform system, referring to FIG. 13, which includes the head-mounted display device provided by the third embodiment of the present disclosure, and a movable platform, the movable platform is equipped with a photographing device, wherein the image photographed by the photographing device can be transmitted to the first display assembly and / or the second display for display.

[0358] In some embodiments, the movable platform includes but is not limited to an aircraft, a vehicle, a ship, a mobile robot, and a handheld stabilizer.

[0359] In some embodiments, the movable platform is equipped with multiple photographing devices, and the multiple photographing devices are used to capture panoramic images.

[0360] Fifth embodiment

[0361] The fifth embodiment of the present disclosure provides a control method of a head-mounted display device, referring to FIGS. 1-12, the head-mounted display device includes a device body, a first display assembly, a second display assembly and an interaction assembly. The device body includes multiple outer surfaces and an inner surface facing the wearer's face, the first display assembly has a first view window exposed to the inner surface, and the second display assembly has a second view window exposed to at least one outer surface.

[0362] The head-mounted display device of the fifth embodiment of the present disclosure uses the head-mounted display device including the first display assembly, the second display assembly and the interaction assembly as described in any of the above embodiments and will be described in any of the following embodiments.

[0363] Referring to FIG. 17, the control method of the head-mounted display device of the present embodiment includes the following steps.

[0364] Step S101: In response to the interaction instruction received by the interaction assembly, determine the display mode of the head-mounted display device.

[0365] Step S102: Based on the display mode, control the display state of the first display assembly and / or the second display assembly.

[0366] It can be understood that the method of the embodiments of the present disclosure can be based on the display state of the first display component and / or the second display component controlled by the interaction instruction received by the interaction component on the basis of adding the display outer screen (i.e., the second display component) to the head-mounted display device, can enrich the display effect of the head-mounted display device based on human-computer interaction, and further improve the user experience.

[0367] Exemplarily, the interaction component includes a touchpad, and the interaction instruction received by the interaction component includes an operation performed on the touchpad.

[0368] The operation performed on the touchpad can be completed by the wearer of the head-mounted display device or by a non-wearer.

[0369] The operation mode when the operation is performed on the touchpad includes but is not limited to a sliding operation on the touch surface of the touchpad, a point selection operation on a specific area of the touchpad, a pressing operation on a specific area of the touchpad, and the like.

[0370] Exemplarily, in response to the interaction instruction received by the interaction component, determining the display mode of the head-mounted display device includes: in response to a display mode switching operation performed on the touchpad, determining the display mode of the head-mounted display device.

[0371] The first display component and / or the second display component can have a plurality of different display states.

[0372] Exemplarily, the first display component and the second display component each have an off-screen state and an image display state. Here, the image display state generally refers to a state of displaying any image. In other words, any state other than the off-screen state can be considered as the image display state.

[0373] Exemplarily, the head-mounted display device is configured to be capable of establishing a communication connection with a movable platform, and the image display state of the first display component and the second display component each includes a map transmission display state. The map transmission display state specifically refers to a state of displaying map transmission data obtained through communication with the movable platform. Exemplarily, the map transmission data includes a panoramic image.

[0374] Exemplarily, the head-mounted display device has at least one image sensor, and the image sensor is used at least to capture an environment image. The image display state of the first display component includes an environment display state. In the environment display state, the first display component displays at least the environment image captured by the image sensor (e.g., can display only the environment image, or can display the environment image and an image obtained by the movable platform).

[0375] Exemplarily, the image display state of the second display component includes at least one of a wallpaper display state, a parameter display state, and a query display state.

[0376] Exemplarily, in the wallpaper display state, the second display component displays a pre-configured picture, an animation, a live photo or a video. In this way, the personalized appearance display of the head-mounted display device in the wearing state and / or the non-wearing state is realized.

[0377] Exemplarily, in the parameter display state, the second display component displays at least one of the power, the communication state, the location, the actuator state and the environmental information of the head-mounted display device and / or the associated external device.

[0378] Here, when the second display component is in the parameter display state, the head-mounted display device can control the second display component to display at least one of the power, the communication state, the location, the actuator state and the environmental information of the head-mounted display device and / or the associated external device. In this way, the personalized parameter display of the head-mounted display device based on the outer screen can be realized. The associated external device can include, but is not limited to, a control terminal, a remote controller, a controlled terminal (for example, a UAV) and the like. The power is used to indicate the power state of the energy storage device on the device, the communication state is used to indicate the state whether the communication interface of the device is normal, the location is used to indicate the current location of the device, the actuator state is used to indicate the current state of the actuator on the device, and the environmental information is used to indicate the attribute information corresponding to the external environment, for example, the flight height limit of the current environment. In this way, the user can quickly obtain the relevant parameter information without being limited by the condition of wearing the head-mounted display device, and the user experience is improved. For example, the parameter information of the aircraft, the flight glasses, the remote controller and the like can be quickly viewed.

[0379] Exemplarily, in the query display state, the second display component displays the stored historical image data. Here, the non-wearing user can control the second display component to display the historical image data stored by the head-mounted display device based on the human-computer interaction operation, for example, the historical shooting screen or the shooting video can be quickly viewed, thereby enriching the viewing experience in the non-wearing scenario.

[0380] In some embodiments, the display mode includes a first display mode, and the display state of the first display component and / or the second display component is controlled based on the display mode, including: in the first display mode, the first display component and the second display component are both controlled to be in the image display state.

[0381] In the first display mode, the first display component and the second display component both display images, so that the wearer and the non-wearer can obtain visual experience at the same time, and the playability of the head-mounted display device is improved.

[0382] In some embodiments, the head-mounted display device is configured to establish a communication connection with the movable platform, and in the first display mode, the control of the first display component and the second display component both in the image display state includes: controlling the first display component and the second display component both in the image transmission display state to display image transmission data obtained through communication with the movable platform.

[0383] Here, the first display component and the second display component both display the image transmission data, so that the wearer and the non-wearer can both observe the image transmission data captured by the shooting device of the movable platform, and thus the wearer and the non-wearer can both experience the flight fun.

[0384] In some embodiments, the control of the first display component and the second display component both in the image transmission display state includes: controlling the first display component to display a first image transmission picture and controlling the second display component to display a second image transmission picture, the first image transmission picture and the second image transmission picture being pictures obtained by different processing of the image transmission data.

[0385] Exemplarily, the first image transmission picture and the second image transmission picture can be pictures obtained by different rendering of the image transmission data.

[0386] Exemplarily, the first image transmission picture and the second image transmission picture can be pictures obtained by different cropping (such as cropping using different sizes or cropping at different positions) of the image transmission data.

[0387] It can be understood that the display effects of the first display component and the second display component are different, and the viewing needs of the wearer and the non-wearer are also different, and in this embodiment, the first display component and the second display component display different image transmission pictures, so that the wearer and the non-wearer can both obtain a better viewing experience.

[0388] Of course, in some embodiments, the control of the first display component and the second display component both in the image transmission display state can include controlling the first display component and the second display component to display the same image transmission picture.

[0389] In some embodiments, the control method further includes switching the processing mode of the first image transmission picture and / or the second image transmission picture in response to the interaction instruction received by the interaction component, so that the wearer and / or the non-wearer can adjust the first image transmission picture and / or the second image transmission picture to the desired picture through human-computer interaction.

[0390] In some embodiments, the image transmission data includes a panoramic image, the first image transmission picture includes a picture of a first perspective obtained from the panoramic image, and the second image transmission picture includes a picture of a second perspective obtained from the panoramic image. In this way, the different viewing needs of the wearer and the non-wearer are met.

[0391] In some embodiments, the control method further comprises adjusting the first view angle and / or the second view angle in response to the interaction instruction received by the interaction component. In this way, the wearer and / or the non-wearer are allowed to adjust the view angle of the first image and / or the second image to a desired view angle through human-computer interaction, meeting different viewing needs.

[0392] In some embodiments, the interaction component comprises a touchpad, and adjusting the first view angle and / or the second view angle in response to the interaction instruction received by the interaction component comprises adjusting the second view angle in response to a view angle adjustment operation on the touchpad. In this way, the wearer and / or the non-wearer are allowed to adjust the view angle of the second display component through the operation of the touchpad, improving the operation convenience.

[0393] Illustratively, the view angle adjustment operation on the touchpad comprises a sliding operation on the touchpad, and adjusting the second view angle in response to the view angle adjustment operation on the touchpad comprises obtaining a sliding direction of the sliding operation on the touchpad, determining an adjustment direction of the second view angle according to the sliding direction, and / or obtaining a sliding distance of the sliding operation on the touchpad, and determining an adjustment amount of the second view angle according to the sliding distance. In this way, the wearer and / or the non-wearer can realize relatively accurate adjustment of the second view angle through a simple sliding operation, reducing the adjustment difficulty and improving the adjustment efficiency.

[0394] In the above embodiments, the first view angle can be adjusted in real time according to the head rotation angle of the wearer. Of course, in some embodiments, the control method further comprises adjusting the first view angle in response to the view angle adjustment operation on the touchpad.

[0395] In some embodiments, adjusting the first view angle and / or the second view angle in response to the interaction instruction comprises adjusting the first view angle to a current viewing view angle of a wearer wearing the head-mounted display device, and adjusting the second view angle to a reference direction of the movable platform, the reference direction comprising at least one of the following directions of the movable platform: a moving direction of the movable platform, a nose direction of the movable platform, a tail direction of the movable platform, a port direction of the movable platform, a starboard direction of the movable platform, a ground direction pointing to the ground relative to the movable platform, and a sky direction pointing to the sky relative to the movable platform.

[0396] Taking the movable platform as an unmanned aerial vehicle as an example.

[0397] The moving direction of the movable platform can refer to the direction in which the movable platform is currently traveling.

[0398] The nose direction of the movable platform can refer to the direction along the roll axis of the movable platform pointing to the nose.

[0399] The tail direction of the movable platform can refer to a direction along the roll axis of the movable platform and pointing to the tail.

[0400] The port side direction of the movable platform can refer to a direction at an angle of -90° between the yaw axis and the head direction.

[0401] The starboard side direction of the movable platform can refer to a direction at an angle of +90° between the yaw axis and the head direction.

[0402] The ground direction relative to the unmanned aerial vehicle and pointing to the ground can refer to a direction at an angle of -90° between the pitch axis and the head direction, or the ground direction can refer to a direction consistent with the direction of the gravitational acceleration.

[0403] The sky direction relative to the movable platform and pointing to the sky can refer to a direction at an angle of +90° between the pitch axis and the flight direction, or the sky direction can refer to a direction opposite to the direction of the gravitational acceleration.

[0404] The above reference direction picture helps the non-wearer to observe the current operation of the movable platform, so that the wearer (i.e., the pilot) can watch the picture taken by the aerial vehicle in real time based on the first display component, and at the same time, the coach or instructor (i.e., the non-wearer) can guide the operation of the pilot in real time based on the above reference direction picture, which helps to improve the safety of the operation of the pilot and obtain professional operation guidance suggestions, etc.

[0405] In some embodiments, in response to the interaction instruction received by the interaction component, adjusting the first view angle and / or the second view angle includes: in response to the interaction instruction received by the interaction component, adjusting the second view angle from the current view angle to a view angle of another reference direction. In this way, the coach or instructor can switch the picture of different reference directions to guide the operation of the pilot.

[0406] In some embodiments, controlling the second display component to be in the image display state includes: controlling the second display component to be in one of the following display states: a wallpaper display state, a parameter form state, a query display state, and a picture transmission display state.

[0407] The specific display modes of the above display states and their advantages are described in the related part of the above description, and will not be described here.

[0408] In some embodiments, the interaction component includes a touchpad, and controlling the second display component to be in the image display state includes: in response to a picture switching operation on the touchpad, controlling the second display component to switch from the picture transmission display mode to at least one of the following states: the wallpaper display state, the parameter display state, and the query display state. In this way, the wearer and / or the non-wearer can quickly switch the different display states of the second display component through the touch operation on the touchpad.

[0409] In some embodiments, the controlling the first display component to be in the image display state comprises: in response to the interaction instruction received by the interaction component, switching the first display component between the image transmission display state and the environment display state. In this way, the wearer can invoke the environment picture based on the human-computer interaction, facilitating the wearer to move while wearing the head-mounted display device.

[0410] It can be understood that when the first display component is in the environment display state, the wearer can not continue to pay attention to the movement of the movable platform, resulting in the movable platform can be out of control, collision, etc. Therefore, in some embodiments, the control method further comprises: in response to the first display component switching from the image transmission display state to the environment display state, sending a safety instruction to the movable platform to make the movable platform perform a safety action. Here, taking the movable platform as an unmanned aerial vehicle as an example, the safety action includes but is not limited to hovering action, homing action, landing action. In this way, the probability of the movable platform out of control, collision in the case that the wearer fails to observe the image transmission picture in time can be reduced.

[0411] In some embodiments, the display mode includes a second display mode, and based on the display mode, the controlling the display state of the first display component and / or the second display component comprises: in the second display mode, controlling the first display component to be in the screen-off state and controlling the second display component to be in the image display state. In this way, in the case that the head-mounted display device is not worn, the user can make the second display component display the picture based on the human-computer interaction, so as to realize parameter query, historical picture watching, wallpaper display, etc.

[0412] In the second display mode, the specific control manner of controlling the second display component to be in the image display state can refer to the first display mode, which will not be described here.

[0413] In some embodiments, the display mode includes a third display mode, and based on the display mode, the controlling the display state of the first display component and / or the second display component comprises: in the third display mode, controlling the first display component to be in the image display state and controlling the second display component to be in the screen-off state. In this way, the wearer can turn off the second display component based on the human-computer interaction when wearing the head-mounted display device, so as to save power. In the third display mode, the specific control manner of controlling the first display component to be in the image display state can refer to the first display mode, which will not be described here.

[0414] Sixth implementation

[0415] The sixth embodiment of the present disclosure provides a head-mounted display device, which further comprises a processor and a memory for storing a computer program capable of running on the processor, wherein the processor is configured to execute the steps of the control method of any one of the fifth embodiments of the present disclosure when running the computer program.

[0416] The head-mounted display device of the present embodiment has all the advantages of the control method of the head-mounted display device of the fifth embodiment and the head-mounted display device of the sixth embodiment, which will not be repeated here.

[0417] The seventh embodiment

[0418] The seventh embodiment of the present disclosure provides a computer storage medium, which can be a computer readable storage medium, for example, a memory for storing a computer program, wherein the computer program can be executed by a processor of a head-mounted display device to complete the steps of the method of the fifth embodiment of the present disclosure. The computer readable storage medium can be a ROM, a PROM, an EPROM, an EEPROM, a Flash Memory, a magnetic surface memory, an optical disc, or a CD-ROM memory, etc.

[0419] In the exemplary embodiments, the embodiments of the present disclosure also provide a computer program product comprising a computer program, wherein the computer program can be executed by a processor of a head-mounted display device to complete the steps of the method of the fifth embodiment of the present disclosure.

[0420] The eighth embodiment

[0421] The eighth embodiment of the present disclosure provides a head-mounted display device, referring to FIGS. 1-12, the head-mounted display device comprises a housing 10 and a cooling fan 40, the housing 10 has an electrical cavity 10a, an air inlet 15 and an air outlet 14 which communicate with the electrical cavity 10a, the cooling fan 40 is arranged in the electrical cavity 10a and is configured to drive the airflow to flow from the air inlet 15 to the air outlet 14, wherein the opening direction of the air outlet 14 is arranged towards the first direction, or the opening direction of the air outlet 14 is inclined towards the first direction compared with the first reference plane, the first direction is the direction away from the face of the wearer, and the first reference plane is perpendicular to the first direction.

[0422] In the head-mounted display device of the present embodiment, the airflow flowing out of the air outlet 14 will have a tendency to flow towards the front of the wearer, so as to reduce the probability of the airflow flowing out of the air outlet 14 flowing to the face (e.g. forehead) or other body parts of the wearer as much as possible, and improve the wearing comfort.

[0423] Technical details of other structures in the head-mounted display device can refer to the related description in the first embodiment of the present disclosure, which will not be repeated here.

[0424] Ninth embodiment

[0425] The ninth embodiment of the present disclosure provides a head-mounted display device, referring to FIGS. 1-12, the head-mounted display device comprises a shell 10 and a cooling fan 40, the shell 10 has an electrical cavity 10a and an air inlet 15 and an air outlet 14 communicating with the electrical cavity 10a, the cooling fan 40 is arranged in the electrical cavity 10a and is configured to drive the airflow to flow from the air inlet 15 to the air outlet 14, wherein the shell 10 comprises two view areas 10b distributed along the width direction of the head-mounted display device, and the air outlet 14 is located between the two view areas 10b along the width direction.

[0426] In this embodiment, the air outlet 14 of the shell 10 is arranged between the two view areas 10b, which on the one hand helps to reduce the space occupation of the air outlet 14 of the shell 10 to the view area 10b, saves space for the display assembly of the head-mounted display device, and can arrange a larger size display assembly under the same shell 10 size, and on the other hand, helps to improve the aesthetic degree of the head-mounted display device.

[0427] Technical details of other structures in the head-mounted display device can refer to the related description in the first embodiment of the present disclosure, which will not be repeated here.

[0428] Tenth embodiment

[0429] The tenth embodiment of the present disclosure provides a head-mounted display device, referring to FIGS. 1-12, the head-mounted display device comprises a shell 10 and a cooling fan 40, the shell 10 has an electrical cavity 10a and an air outlet 14 and a plurality of air inlets 15 communicating with the electrical cavity 10a, the cooling fan 40 is arranged in the electrical cavity 10a and is configured to drive the airflow to flow from the plurality of air inlets 15 to the air outlet 14, wherein the plurality of air inlets 15 are distributed on opposite sides of the air outlet 14 along the width direction of the head-mounted display device.

[0430] In this embodiment, the setting mode of multiple air inlets 15 and one air outlet 14 is adopted, and the plurality of air inlets 15 are distributed on opposite sides of the air outlet 14 along the width direction of the head-mounted display device, which on the one hand helps to improve the aesthetic degree of the head-mounted display device, and on the other hand helps to make the airflow flow in the electrical cavity 10a of the shell 10 along the width direction, improve the contact area and contact time of the airflow with the components in the electrical cavity 10a, and further improve the cooling efficiency.

[0431] Technical details of other structures in the head-mounted display device can refer to the related description in the first embodiment of the present disclosure, which will not be repeated here.

[0432] Eleventh embodiment

[0433] The eleventh embodiment of the present disclosure provides a head-mounted display device, with reference to FIGS. 1-12, on the basis of the eighth embodiment, or the ninth embodiment, or the tenth embodiment of the present disclosure, the air inlet 15 of the head-mounted display device is further arranged to be inclined toward the first direction compared with the first reference plane. In this way, the probability of the air flow flowing out of the air outlet 14 contacting the body parts of the wearer is reduced.

[0434] In some embodiments, the opening direction of the air outlet 14 is parallel to the second reference plane, which is a plane perpendicular to the height direction of the head-mounted display device. In this embodiment, the opening direction of the air outlet 14 is parallel to the second reference plane, that is, the opening direction of the air outlet 14 is not offset toward the left or right side, so that the probability of the air flow flowing out of the air outlet 14 flowing to the ears of the wearer is reduced, and the aesthetic appearance is improved.

[0435] In some embodiments, the opening direction of the air outlet 14 is directed upward of the third reference plane, which is a plane perpendicular to the height direction of the head-mounted display device. That is, the opening direction of the air outlet 14 is upward and forward, so that the probability of the air flow flowing out of the air outlet 14 flowing to the neck and below of the wearer is reduced.

[0436] In some embodiments, the included angle between the opening direction of the air outlet 14 and the first reference plane is greater than or equal to 25° and less than or equal to 65°, which can be any value or any value between any two values in 25°, 30°, 35°, 40°, 45°, 50°, 55°, 60°, 65°. In some embodiments, in particular, the included angle between the opening direction of the air outlet 14 and the first reference plane is 37°-38°, such as 37.28°.

[0437] By setting the inclination angle in the above range, the probability of the air flow flowing out of the air outlet 14 flowing to the face or other body parts of the wearer is reduced, and the aesthetic appearance of the head-mounted display device is improved.

[0438] In some embodiments, the air inlet 15 includes at least one first air inlet 15a, and the opening direction of the first air inlet 15a is toward the width direction of the head-mounted display device.

[0439] In the embodiment, by setting the first air inlet 15a in the opening direction toward the width direction of the head-mounted display device, at least part of the airflow can flow along the width direction of the head-mounted display device, thus helping to increase the contact area and prolong the contact time of the airflow with the components in the electrical cavity 10a (the size of the head-mounted display device along the width direction is generally significantly larger than the size along the front-rear direction and the height direction), thereby improving the heat dissipation effect.

[0440] In some embodiments, the air inlet 15 includes at least one second air inlet 15b, the opening direction of the second air inlet 15b is toward the second direction, or the opening direction of the second air inlet 15b is inclined toward the second direction compared to the first reference plane, the second direction is opposite to the first direction, and the first reference plane is perpendicular to the first direction.

[0441] In the embodiment, the opening direction of the second air inlet 15b is set to be toward the second direction (i.e., toward the face of the wearer) or inclined toward the second direction compared to the first reference plane, so that the airflow flowing into the second air inlet 15b can first contact the face of the wearer, thereby reducing the stuffy feeling when the wearer wears the head-mounted display device and improving the wearing experience.

[0442] In some embodiments, specifically, the air inlet 15 includes at least one second air inlet 15b, and the opening direction of the second air inlet 15b is inclined toward the second direction compared to the first reference plane.

[0443] In some embodiments, the opening direction of the second air inlet 15b intersects with the second reference plane, and the second reference plane is perpendicular to the width direction of the head-mounted display device. That is, the second air inlet 15b is inclined toward the left rear or the right rear, so as to help to improve the air intake amount and reduce the direct contact of the airflow with the face of the wearer, thereby improving the wearing comfort.

[0444] In some embodiments, the opening direction of the second air inlet 15b is parallel to the third reference plane, and the third reference plane is perpendicular to the height direction of the head-mounted display device. That is, the opening direction of the second air inlet 15b does not deviate upward or downward, so as to help to reduce the wind resistance and improve the air intake amount.

[0445] In the description of the disclosure, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the disclosure. In the disclosure, the illustrative description of the above terms is not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine different embodiments or examples described in the disclosure and the features of different embodiments or examples without contradiction.

[0446] The above is only the preferred embodiment of the disclosure, and is not intended to limit the disclosure. Those skilled in the art can make various modifications and changes to the disclosure. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the disclosure shall be included in the protection scope of the disclosure.

Claims

A head-mounted display device comprises: a housing having an electrical cavity; a first display assembly disposed at least partially within the electrical cavity; and a control assembly configured to control the first display assembly to display an image, the control assembly disposed within the electrical cavity and at least partially on a side of the first display assembly in a first direction, the first direction being a direction away from a face of a wearer; and / or, the first direction being a front direction of the head-mounted display device. The first direction is a thickness direction of the head-mounted display device; and / or, The head-mounted display device of claim 1, wherein The first display assembly has a first view window, and the first direction is perpendicular to the first view window. The housing has a plurality of outer surfaces and an inner surface facing the face of the wearer, the inner surface and the plurality of outer surfaces enclosing the electrical cavity. The head-mounted display device of claim 1, wherein The housing has an air outlet communicating with the electrical cavity, an opening direction of the air outlet being towards the first direction, or an opening direction of the air outlet being inclined towards the first direction compared to a first reference plane, the first reference plane being perpendicular to the first direction.

4. The head-mounted display device of claim 1, wherein, The housing comprises two view regions distributed along a width direction of the head-mounted display device, the housing has an air outlet communicating with the electrical cavity, the air outlet being located between the two view regions along the width direction. The head-mounted display device of claim 1, wherein The housing has an air inlet communicating with the electrical cavity, The head-mounted display device of claim 1, wherein The air inlet comprises at least one first air inlet, an opening direction of the first air inlet being towards a width direction of the head-mounted display device; and / or The air inlet comprises at least one second air inlet, an opening direction of the second air inlet being towards a second direction, or an opening direction of the second air inlet being inclined towards the second direction compared to a first reference plane, the second direction being opposite to the first direction, the first reference plane being perpendicular to the first direction; and / or The housing has at least one air inlet disposed on each of opposite sides of the head-mounted display device along a width direction of the head-mounted display device. The head-mounted display device comprises a heat dissipation fan, the housing has an air inlet and an air outlet communicating with the electrical cavity, the heat dissipation fan is configured to drive airflow from the air inlet to the air outlet, the first display assembly, the control assembly and the heat dissipation fan are sequentially disposed along the first direction. The heat dissipation fan comprises a centrifugal fan, an axis of the centrifugal fan being parallel to the first direction, an orientation of an air outlet side of the centrifugal fan being perpendicular to the first direction. The head-mounted display device of claim 7, the housing comprises two view regions distributed along a width direction of the head-mounted display device, an axis of the heat dissipation fan being located between the two view regions. The control assembly comprises a circuit board and an electrical unit disposed on the circuit board, the electrical unit comprises at least one first electrical unit, the first electrical unit being disposed on a side of the circuit board facing the heat dissipation fan, the heat dissipation fan is configured to drive airflow to flow through the first electrical unit. The head-mounted display device of claim 1, wherein The head-mounted display device comprises a heat conduction body, the heat conduction body being disposed between the first electrical unit and the heat dissipation fan. The head-mounted display device of claim 7, wherein, ​ ​ The head-mounted display device of claim 7, wherein ​ The head-mounted display device of claim 10, wherein, ​ The head-mounted display device of claim 11, wherein, The control assembly comprises a shielding body covering a side of the first electrical unit away from the circuit board, The shielding body and the first electrical unit are provided with the heat-conducting body, and / or the shielding body and the heat-dissipation fan are provided with the heat-conducting body. The head-mounted display device of claim 10, wherein, The head-mounted display device comprises a first heat sink provided on a side of the first electrical unit facing the heat-dissipation fan, and the first heat sink comprises first heat-dissipation fins connected to the heat-dissipation fan. The head-mounted display device of claim 10, wherein, The first electrical unit comprises at least one of a master control unit, a WIFI unit, and a main battery unit. The head-mounted display device of claim 10, wherein, The electrical unit comprises at least one second electrical unit provided on a side of the circuit board facing the first display assembly, and the heat-dissipation fan is configured to drive airflow to flow through the second electrical unit. The head-mounted display device of claim 15, wherein, An interval is formed between the second electrical unit and the first display assembly for airflow to flow. The head-mounted display device of claim 15, wherein, The second electrical unit comprises at least one of a radio frequency unit, a storage unit, a Bluetooth unit, an audio unit, and a secondary battery unit, wherein the secondary battery unit is used to supply power to at least one of the heat-dissipation fan and the radio frequency unit. The head-mounted display device of claim 1, wherein The housing has an air inlet and an air outlet communicating with the electrical cavity, the head-mounted display device comprises a heat-dissipation fan, the first display assembly comprises a bracket and an optical engine module provided on the bracket, wherein the bracket forms an air duct, at least a part of the optical engine module is arranged in the air duct, and the heat-dissipation fan is configured to drive at least part of the airflow to flow from the air inlet to the air outlet through the air duct. The head-mounted display device of claim 18, wherein, At least a part of the control assembly is located in the air duct, or the control assembly is spaced apart from the bracket along the first direction. The head-mounted display device of claim 18, wherein, The air duct extends along a width direction of the head-mounted display device, and at least one end of the bracket along the width direction has an air duct inlet communicating the air duct and the air inlet. The head-mounted display device of claim 20, wherein, Both ends of the bracket along the width direction have the air duct inlet, the first display assembly comprises two optical engine modules distributed along the width direction, the bracket has an air duct outlet communicating the air duct and the air outlet, and the air duct outlet is located between the two optical engine modules along the width direction. The head-mounted display device of claim 18, wherein, The optical engine module comprises a display screen and a second heat sink provided on a side of the display screen along the first direction, the second heat sink comprises second heat-dissipation fins, and the second heat-dissipation fins are located in the air duct. The head-mounted display device of claim 22, wherein The head-mounted display device comprises a heat-conducting body provided between the display screen and the second heat sink. The head-mounted display device according to claims 11, 12, 23, wherein, The heat-conducting body comprises heat-conducting gel. The head-mounted display device of claim 6, wherein, The head-mounted display device comprises a mask provided on a side of the housing along a second direction opposite to the first direction, the mask and the housing form a mask cavity, and at least one of the air inlets communicates the mask cavity and the electrical cavity. The head-mounted display device of claim 25, wherein, The mask has at least one air-permeable opening communicating the mask cavity and an external environment. The head-mounted display device of claim 26, wherein The air inlets include at least one second air inlet, the second air inlet communicates the cover cavity with the electrical cavity, and the air vents are distributed along a width direction of the head-mounted display device. The head-mounted display device of claim 27, wherein The first display assembly includes two optical-mechanical modules distributed along the width direction, and at least one second air inlet is arranged on opposite sides of the first display assembly along the width direction. At least one air vent is located between the two optical-mechanical modules along the width direction, and / or in an orthographic projection along a height direction of the head-mounted display device, projections of the two optical-mechanical modules respectively overlap projections of the at least one air vent. The head-mounted display device of claim 25, wherein, The head-mounted display device includes a heat dissipation fan configured to drive airflow from the cover cavity to the electrical cavity through the air inlets, the heat dissipation fan has a heat dissipation mode and a defogging mode, and a power of the heat dissipation fan in the defogging mode is greater than a power of the heat dissipation fan in the heat dissipation mode. The head-mounted display device of claim 1, wherein The first display assembly includes an optical-mechanical module, and the head-mounted display device includes an adjustment assembly configured to adjust an optical parameter of the optical-mechanical module. The head-mounted display device of claim 30, wherein The first display assembly includes two optical-mechanical modules distributed along a width direction of the head-mounted display device, each of the optical-mechanical modules includes a display screen and a lens group arranged opposite to the display screen, The adjustment assembly is configured to adjust a distance between the lens groups of the two optical-mechanical modules along the width direction, and / or the adjustment assembly is configured to adjust a refractive power of the lens groups of the two optical-mechanical modules. The head-mounted display device of claim 31, wherein The adjustment assembly includes two adjustment knobs respectively in transmission connection with the lens groups of the two optical-mechanical modules, The adjustment knobs drive at least one lens in the lens group to move to change the refractive power of the lens group when the adjustment knobs are rotated, and the adjustment knobs are in sliding connection with the shell along the width direction, and the adjustment knobs drive the lens groups to move along the width direction when the adjustment knobs move relative to the shell along the width direction. The head-mounted display device of claim 1, wherein The head-mounted display device includes a second display assembly arranged in the shell, the first display assembly, the control assembly and the second display assembly are arranged in sequence along the first direction, and the control assembly is located between the first display assembly and the second display assembly. The head-mounted display device of claim 33, wherein The second display assembly has a second window exposed to at least one outer surface of the shell, and the second window is arranged towards the first direction. The head-mounted display device of claim 33, wherein The head-mounted display device includes an interaction assembly configured to receive an interaction instruction, and the interaction instruction is configured to control a display state of the first display assembly and / or the second display assembly. The head-mounted display device of claim 35, wherein The interaction assembly has an operation surface exposed to at least one outer surface of the shell. The head-mounted display device of claim 36, wherein The operation surface is arranged towards a second direction opposite to the first direction, and / or The interaction assembly includes a touchpad, and the operation surface is a touch surface of the touchpad. The head-mounted display device of any of claims 35-37, wherein The shell has two view regions distributed along a width direction of the head-mounted display device, the second display assembly is arranged in one of the view regions, and the interaction assembly is arranged in the other view region. The head-mounted display device of claim 1, wherein, The head-mounted display device comprises an antenna, which is used at least for receiving image transmission data transmitted by a movable platform, and the first display component is used at least for displaying the image transmission data. The head-mounted display device according to claim 39, wherein, the antenna is electrically connected with the control component; and / or the antenna comprises at least one omnidirectional antenna; and / or the antenna comprises at least one directional antenna; and / or at least one of the antennas is arranged in the electrical cavity, and / or the head-mounted display device comprises an antenna housing connected with the shell, and at least one of the antennas is arranged in the antenna housing. The head-mounted display device of claim 39, wherein, The antenna comprises at least one directional antenna, the radiation direction of at least one of the directional antennas is parallel to a first reference plane, and / or the radiation direction of at least one of the directional antennas is inclined to a second direction relative to the first reference plane, and / or the radiation direction of at least one of the directional antennas is toward the second direction, the second direction being opposite to the first direction, and the first reference plane is perpendicular to the first direction. The head-mounted display device of claim 41, wherein, The directional antenna comprises a first directional antenna and a second directional antenna, the radiation directions of the first directional antenna and the second directional antenna intersect, and the radiation directions of the first directional antenna and the second directional antenna are both inclined to the second direction relative to the first reference plane, the included angles between the radiation directions of the first directional antenna and the second directional antenna and the reference plane are the same, and / or the first directional antenna and the second directional antenna are respectively arranged at opposite ends of the shell along the width direction of the head-mounted display device. The head-mounted display device of claim 1, wherein, The head-mounted display device further comprises a loudspeaker and / or a microphone arranged in the shell. The head-mounted display device of claim 43, wherein, The loudspeaker is arranged in the electrical cavity and connected with the control component; and / or the first display component is provided with at least one loudspeaker on opposite sides along the width direction of the head-mounted display device; and / or The microphone is arranged in the electrical cavity and connected with the control component. The head-mounted display device of claim 1, wherein The head-mounted display device is configured to be communicatively connected with a movable platform to obtain a first image captured by a shooting device carried by the movable platform. The head-mounted display device further comprises an image sensor arranged in the shell, the image sensor is used to collect a second image, and the first display component is configured to display the first image and / or the second image. The head-mounted display device of claim 45, wherein, At least one image sensor is exposed to one side surface of the shell along the first direction. The head-mounted display device of claim 45, wherein, At least one of the image sensors is also used to collect control instructions of a control device associated with the head-mounted display device. The head-mounted display device of claim 1, wherein, The head-mounted display device comprises a human body detection sensor arranged in the shell, and the human body detection sensor is exposed to one side surface of the shell along a second direction opposite to the first direction. A movable platform system, wherein, The head-mounted display device comprises: The head-mounted display device according to any one of claims 1-48; The movable platform carries a shooting device; The image captured by the shooting device can be transmitted to the first display component for display. The movable platform system of claim 49, wherein, The movable platform comprises an aircraft, a vehicle, a ship, a mobile robot, and a handheld stabilizer. The movable platform system of claim 49, wherein, The movable platform carries multiple shooting devices for capturing panoramic images. A head-mounted display device comprises: a device body comprising a plurality of outer surfaces and an inner surface facing a wearer's face; a first display assembly having a first window exposed to the inner surface; a second display assembly having a second window exposed to at least one of the outer surfaces; and an interaction assembly for receiving interaction instructions for controlling display states of the first display assembly and / or the second display assembly. The second window is oriented opposite to the first window. The head-mounted display device of claim 52, wherein, The interaction assembly has an operation surface exposed to at least one of the outer surfaces. The head-mounted display device of claim 53, wherein, The interaction assembly comprises a touchpad, and the operation surface is a touch surface of the touchpad; and / or The head-mounted display device of claim 54, wherein, The operation surface is oriented opposite to the first window. The device body has two view regions distributed along a width direction of the head-mounted display device, the first display assembly comprises two optical-mechanical modules respectively arranged in the two view regions, the second display assembly is arranged in one of the view regions, and the interaction assembly is arranged in the other view region. The head-mounted display device of claim 52, wherein, The head-mounted display device of any one of claims 52-56; A movable platform system, wherein, a movable platform carrying a shooting device; wherein images captured by the shooting device can be transmitted to a first display assembly and / or a second display for display. The movable platform carries multiple shooting devices for capturing panoramic images. The first display assembly has a first window exposed to the inner surface; The movable platform system of claim 57, wherein, The second display assembly has a second window exposed to at least one of the outer surfaces; and A control method of a head-mounted display device, the head-mounted display device including a device body, a first display assembly, a second display assembly, and an interaction assembly, the device body including a plurality of outer surfaces and an inner surface facing a wearer's face; The method comprises: determining a display mode of the head-mounted display device in response to interaction instructions received by the interaction assembly; controlling display states of the first display assembly and / or the second display assembly based on the display mode. The display mode comprises a first display mode, and the controlling of the display states of the first display assembly and / or the second display assembly based on the display mode comprises: The method of claim 59, wherein, in the first display mode, controlling the first display assembly and the second display assembly to be in image display states. The head-mounted display device is configured to establish a communication connection with a movable platform, and the controlling of the first display assembly and the second display assembly to be in image display states in the first display mode comprises: The method of claim 60, wherein, controlling the first display assembly and the second display assembly to be in image transmission display states to display image transmission data obtained through communication with the movable platform. The controlling of the first display assembly and the second display assembly to be in image transmission display states comprises: The method of claim 61, wherein, controlling the first display assembly to display a first image transmission picture and controlling the second display assembly to display a second image transmission picture, the first image transmission picture and the second image transmission picture being pictures obtained through different processing of the image transmission data. ​ The method of claim 62, wherein, The image transmission data includes a panoramic image, the first image transmission picture includes a picture of a first perspective acquired from the panoramic image, and the second image transmission picture includes a picture of a second perspective acquired from the panoramic image. The method of claim 63, wherein, The control method of the head-mounted display device further includes: in response to an interaction instruction received by the interaction component, adjusting the first perspective and / or the second perspective. The method of claim 64, wherein, The interaction component includes a touchpad, in response to an interaction instruction received by the interaction component, adjusting the first perspective and / or the second perspective includes: in response to a perspective adjustment operation for the touchpad, adjusting the second perspective. The method of claim 64, wherein, in response to an interaction instruction received by the interaction component, adjusting the first perspective and / or the second perspective includes: in response to an interaction instruction received by the interaction component, adjusting the first perspective to a perspective currently viewed by a wearer wearing the head-mounted display device, and adjusting the second perspective to a perspective of a reference direction of the movable platform, the reference direction including at least one of a moving direction of the movable platform, a nose direction of the movable platform, a tail direction of the movable platform, a port direction of the movable platform, a starboard direction of the movable platform, a ground direction pointing to the ground relative to the movable platform, and a sky direction pointing to the sky relative to the movable platform. The method of claim 60, wherein, controlling the second display component to be in an image display state includes: controlling the second display component to be in one of a wallpaper display state, a parameter display state, a query display state, and an image transmission display state. The method of claim 67, wherein, The interaction component includes a touchpad, and controlling the second display component to be in an image display state includes: in response to a picture switching operation for the touchpad, controlling the second display component to switch from the image transmission display mode to at least one of a wallpaper display state, a parameter display state, and a query display state. The method of claim 60, wherein, The display mode includes a second display mode, and based on the display mode, controlling the display state of the first display component and / or the second display component includes: in the second display mode, controlling the first display component to be in an off-screen state, and controlling the second display component to be in an image display state. The method of claim 60, wherein, The display mode includes a third display mode, and based on the display mode, controlling the display state of the first display component and / or the second display component includes: in the third display mode, controlling the first display component to be in an image display state, and controlling the second display component to be in an off-screen state. A head-mounted display device, wherein The head-mounted display device further includes a processor and a memory for storing a computer program capable of running on the processor, wherein the processor is configured to execute the steps of the method of any one of claims 59 to 70 when running the computer program. A head-mounted display device includes: a housing having an electrical cavity, and an air inlet and an air outlet in communication with the electrical cavity; and a heat dissipation fan disposed in the electrical cavity and configured to drive airflow to flow from the air inlet to the air outlet, wherein the air outlet is arranged to face the first direction or the air outlet is arranged to be inclined to the first direction relative to the first reference plane, the first direction being a direction away from the face of the wearer, and the first reference plane being perpendicular to the first direction. A head-mounted display device, comprising: a housing having an electrical cavity, and an air inlet and an air outlet in communication with the electrical cavity; and a heat dissipation fan disposed in the electrical cavity and configured to drive airflow to flow from the air inlet to the air outlet. A head-mounted display device, comprising: a housing having an electrical cavity, and an air outlet and a plurality of air inlets in communication with the electrical cavity; and a heat dissipation fan disposed in the electrical cavity and configured to drive airflow to flow from the plurality of air inlets to the air outlet. The opening direction of the air outlet is inclined to the first direction relative to the first reference plane. The opening direction of the air outlet is parallel to the second reference plane, and the second reference plane is perpendicular to the width direction of the head-mounted display device. The head-mounted display device of any of claims 72-74, wherein The opening direction of the air outlet points to the top side of the third reference plane, and the third reference plane is perpendicular to the height direction of the head-mounted display device. The head-mounted display device of claim 75, wherein The included angle between the opening direction of the air outlet and the first reference plane is greater than or equal to 25° and less than or equal to 65°. The head-mounted display device of claim 75, wherein The air inlet includes at least one first air inlet, and the opening direction of the first air inlet faces the width direction of the head-mounted display device. The head-mounted display device of claim 75, wherein The air inlet includes at least one second air inlet, and the opening direction of the second air inlet faces the second direction or is inclined to the second direction relative to the first reference plane, the second direction being opposite to the first direction, and the first reference plane being perpendicular to the first direction. The head-mounted display device of claim 75, wherein The air inlet includes at least one second air inlet, and the opening direction of the second air inlet is inclined to the second direction relative to the first reference plane, wherein The opening direction of the second air inlet intersects the second reference plane, and the second reference plane is perpendicular to the width direction of the head-mounted display device, and / or the opening direction of the second air inlet is parallel to the third reference plane, and the third reference plane is perpendicular to the height direction of the head-mounted display device. ​ The head-mounted display device of claim 79, wherein, ​ ​