Head-mounted display device

Abstract

The utility model relates to a head-mounted display device, which comprises a head-mounted display part with a display function and a head-mounted part used for supporting and fixing the head-mounted display part, and the head-mounted part is configured to fix the head-mounted display part in front of eyes of a user when the user wears the head-mounted display device. The head display part comprises a shell, and an optical machine module and a camera module which are arranged in the shell; the head-mounted display device further comprises a heat dissipation structure, the heat dissipation structure comprises a fixing support and a radiator, and the radiator comprises a fan. The fixing support is used for fixing the light machine module and the camera module and conducting heat of the light machine module and the camera module to the radiator.

Description

TECHNICAL FIELD

[0001] The utility model relates to display product manufacturing technical field especially relates to a head-mounted display device. BACKGROUND

[0002] With the development of AR virtual reality technology, AR glasses visual effect is better and better, and the realized function is more powerful, including voice, gesture, eye movement capture technology integration, realizing remote collaborative office, space planning and arrangement, 3D content production display, and step-by-step guidance to new products, processes and equipment functions. The design style also develops towards light and thin hardware integration scale is more intensive, device power consumption gradually increases and concentrates, and the heat dissipation requirement is higher and higher, so that the whole machine structure is more complex and diversified.

[0003] According to the development target and requirement of AR glasses project, it is necessary to design a heat dissipation scheme for the problem of high temperature of VR glasses, and solve the heat dissipation problem of each heating device, such as camera, optical machine module, mainboard PCB heating device and the like. UTILITY MODEL CONTENT

[0004] In order to solve the above technical problems, the utility model provides a head-mounted display device, which solves the heat dissipation problem of the head-mounted display device.

[0005] In order to achieve the above purpose, the technical scheme adopted by the utility model embodiment is: a head-mounted display device, comprising a head-mounted display part with display function, and a head-mounted part for supporting and fixing the head-mounted display part, and the head-mounted part is configured to fix the head-mounted display part in front of the user's eyes when the user wears the head-mounted display device, characterized in that:

[0006] The head-mounted display part comprises a shell, an optical machine module and a camera module arranged in the shell;

[0007] The head-mounted display device further comprises a heat dissipation structure, and the heat dissipation structure comprises a fixing bracket and a radiator, and the radiator comprises a fan;

[0008] The fixing bracket is used for fixing the optical machine module and the camera module, and conducting heat of the optical machine module and the camera module to the radiator.

[0009] Optionally, the top of the fixing bracket is provided with a mainboard electrically connected with the optical machine module and the camera module;

[0010] The heat dissipation structure further comprises a heat conduction plate, and the heat conduction plate comprises a first heat conduction part, the first heat conduction part is located on the side of the mainboard away from the fixing bracket, and is used for conducting heat of the heating device on the mainboard to the radiator.

[0011] Optionally, the heat-conducting plate further comprises a second heat-conducting part connected with the first heat-conducting part in an L shape, the second heat-conducting part is located at the back of the fixed support in the first direction, and the second heat-conducting part is located between the fixed support and the heat sink, the first direction is from the forehead of the user to the back of the user when the user wears the head-mounted display device, and the back is the side of the fixed support close to the forehead of the user. Optionally, the first heat-conducting part is connected with the heat generating device on the mainboard through a heat-conducting silica gel pad.

[0012] Optionally, in the second direction perpendicular to the first direction, the heat sink comprises a heat dissipation pipe and a fan located at opposite ends of the heat dissipation pipe, the heat dissipation pipe and the second heat-conducting part are connected for conducting the heat of the heat generating device on the mainboard conducted through the second heat-conducting part to the fan, and in the second direction, the two fans are located at opposite sides of the optical engine module, respectively.

[0013] Optionally, in the second direction, one of the fans is provided with a heat dissipation fin away from the side of the other fan.

[0014] Optionally, the middle part of the heat dissipation pipe is connected with a U-shaped mounting groove, the U-shaped mounting groove is arranged towards the fixed support for connection with the second heat-conducting part.

[0015] Optionally, the camera module comprises at least one first camera, the fixed support has a main support for mounting at least one first camera, at least one stepped part is arranged on the mounting surface of the main support away from the optical engine module, the stepped part comprises a convex surface formed by locally protruding from the mounting surface, and a concave surface adjacent to the convex surface, the convex surface is used for mounting the first camera, and the concave surface is used for mounting a flexible circuit board connecting the first camera to the mainboard.

[0016] Optionally, the camera module comprises at least one second camera, the fixed support comprises a connecting support connected with the main support, the connecting surface of the connecting support for connecting with the second camera is arranged at an angle between the mounting surface, so that at least one first camera and at least one second camera are arranged tangent to the same curve.

[0017] Optionally, the first heat-conducting part has a plurality of crimping parts, and the plurality of crimping parts are used to cover the flexible circuit board connected with at least one first camera and the flexible circuit board connected with at least one second camera.

[0018] Optionally, the head-mounted part comprises a headband main body, an opening is arranged on one side of the headband main body, and two arc-shaped adjusting bands are arranged at the opening.

[0019] The head-wearing part further comprises a battery box front cover and a battery box shell, which enclose a receiving cavity with a through hole on the side wall for the arc-shaped adjusting band to pass through;

[0020] The arc-shaped adjusting band comprises an adjusting band body and a rack arranged on the part of the adjusting band body close to the opening, the thickness of the rack being smaller than that of the adjusting band body;

[0021] The part of the receiving cavity corresponding to the rack is protruded towards the battery box front cover to form a wiring area.

[0022] Optionally, the adjusting band body has a first side and a second side arranged oppositely along the width direction, the first side is provided with the rack, and the second side is partially recessed to form a track.

[0023] Optionally, the head-wearing part further comprises an adjusting structure for adjusting the circumferential length of the headband body by controlling the two arc-shaped adjusting bands to move towards or away from each other, the adjusting structure comprises a gear engaged with the rack structure, a ratchet wheel arranged on the battery box shell, a transmission shaft arranged between the ratchet wheel and the gear, and a knob arranged on the battery box front cover, the knob is provided with a driving block capable of driving the ratchet wheel to move.

[0024] Optionally, a rack cover plate is arranged between the battery box shell and the battery box front cover, the rack cover plate is provided with a through hole for accommodating the ratchet wheel, and opposite sides of the through hole in the moving direction of the rack are provided with rack limiting grooves, one end of the rack away from the corresponding adjusting band body is provided with a limiting column, and the limiting column is matched with the limiting groove on the side of the through hole away from the limiting column.

[0025] Optionally, the bottom of the receiving cavity is provided with a battery mounting port, the battery mounting port is provided with a battery box rear cover, and the head-wearing part further comprises a battery lock structure, the battery lock structure comprises a clamping hook arranged on the side edge of the battery box rear cover.

[0026] The battery lock structure further comprises a power supply circuit board and an adjusting plate, the power supply circuit board is fixed on the bottom wall of the receiving cavity, the adjusting plate is movably arranged on the bottom wall of the receiving cavity, a connecting rod capable of being electrically connected with a connecting piece on the power supply circuit board is arranged on the first surface of the adjusting plate, a pressing piece is arranged on the second surface of the adjusting plate opposite to the first surface, the pressing piece is installed in a mounting hole on the bottom wall of the receiving cavity, and the adjusting plate is moved to change the connection state of the connecting rod and the connecting piece by pressing the pressing piece.

[0027] The utility model discloses the beneficial effect is: set up fixed bolster and radiator, the fixed bolster realizes the function of fixed light machine module and camera module's role when, can the heat conduction of light machine module and camera module to radiator, through the fan of radiator carries out heat dissipation, through the passive heat dissipation and fan active heat dissipation of heat exchange combination mode, utilize the space of as small as possible maximum degree improves heat dissipation efficiency, guarantees its working performance and circuit safety. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 An exploded view of a head-mounted portion is shown;

[0029] Figure 2 A schematic view of a head-mounted portion is shown;

[0030] Figure 3 A schematic view of a head-mounted portion is shown;

[0031] Figure 4 A schematic view of a head-mounted portion is shown;

[0032] Figure 5 A schematic view of a head-mounted portion is shown;

[0033] Figure 6 A partial schematic view of a head-mounted portion is shown;

[0034] Figure 7 An exploded view of a head-mounted portion is shown;

[0035] Figure 8 A schematic view of a fixed bolster is shown;

[0036] Figure 9 A schematic view of a fixed bolster is shown;

[0037] Figure 10 A schematic view of a connecting bolster is shown;

[0038] Figure 11 A schematic view of a connecting bolster is shown;

[0039] Figure 12 A schematic view of a pivot connection assembly is shown;

[0040] Figure 13 An exploded view of a head-mounted portion is shown;

[0041] Figure 14 An exploded view of a head-mounted portion is shown;

[0042] Figure 15 A schematic view of a head-mounted portion is shown;

[0043] Figure 16 A schematic view of a head-mounted portion is shown;

[0044] Figure 17 schematic view showing a headgear portion;

[0045] Figure 18 schematic view showing a battery lock structure;

[0046] Figure 19 schematic view showing a battery lock;

[0047] Figure 20 schematic view showing a headgear body length maximum state;

[0048] Figure 21 schematic view showing a headgear body length minimum state;

[0049] Figure 22 schematic view showing a knob;

[0050] Figure 23 schematic view showing a connection between the knob and the battery housing. DETAILED DESCRIPTION

[0051] In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be described clearly and completely below with reference to the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are some but not all of the embodiments of the present disclosure. Based on the described embodiments of the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the scope of the present disclosure.

[0052] Unless otherwise defined, technical terms or scientific terms used in the present disclosure shall have the ordinary meanings understood by those of ordinary skill in the art to which the present disclosure pertains. The terms “first”, “second” and similar terms used in the present disclosure do not denote any order, quantity or importance, but are used to distinguish different components. Similarly, the terms “one”, “a” or “the” and similar terms do not denote quantity restriction, but mean that there is at least one. The terms “include” or “contain” and similar terms mean that the components or objects before the terms encompass the components or objects listed after the terms and their equivalents, without excluding other components or objects. The terms “connect” or “connected” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper”, “lower”, “left”, “right” and the like only represent relative positional relationships, and when the absolute positions of the described objects change, the relative positional relationships can also change accordingly.

[0053] The terms "parallel," "perpendicular," and "same" and the like used in the embodiments of the present disclosure include not only the strict "parallel," "perpendicular," "same" and the like, but also "approximately parallel," "approximately perpendicular," "approximately same" and the like with a certain tolerance, which, taking into account the measurement and the tolerance related to the measurement of a specific value (for example, the limitation of the measurement system), represents the acceptable deviation range for the specific value determined by the person skilled in the art. For example, "approximately" can mean within one or more standard deviations, or within 3% or 5% of the value.

[0054] In addition, in this document, unless otherwise defined, the terms "substantial," "essentially," "approximately," and "about" are used to describe and account for small variations. When used in connection with an event or circumstance, these terms can encompass the occurrence of the event or circumstance in an exact manner, as well as the occurrence of the event or circumstance in an approximate manner. For example, when used in connection with a numerical value, these terms can include a range of variation of the numerical value of less than or equal to 10%, such as less than or equal to ±5%, less than or equal to ±4%, less than or equal to ±3%, less than or equal to ±2%, less than or equal to ±1%, less than or equal to ±0.5%, less than or equal to ±0.1%, less than or equal to ±0.05%. The term "substantially coplanar" can mean that two surfaces are arranged along the same plane within the micrometer range, for example, within 40 μm, 30 μm, 20 μm, 10 μm or 1 μm along the same plane.

[0055] Reference Figures 1-23 The present embodiment provides a head-mounted display device, which includes a head-mounted display part having a display function, and a head-mounted part for supporting and fixing the head-mounted display part, and the head-mounted part is configured to fix the head-mounted display part in front of the eyes of a user when the user wears the head-mounted display device, characterized in that:

[0056] The head-mounted display part includes a shell and an optical-mechanical module 10 and a camera module arranged in the shell;

[0057] The head-mounted display device further includes a heat dissipation structure, which includes a fixing bracket 2 and a heat sink 3, and the heat sink 3 includes a fan 4;

[0058] The fixing bracket 2 is used to fix the optical-mechanical module 10 and the camera module, and has the function of heat conduction, so as to conduct the heat of the optical-mechanical module 10 and the camera module to the heat sink 3.

[0059] The head-mounted display device provided by the embodiment is provided with a fixing support 2 and a heat sink 3. The fixing support 2 can conduct the heat of the optical engine module 10 and the camera module to the heat sink 3 while achieving the functions of fixing the optical engine module 10 and the camera module. The heat is dissipated by the fan 4 of the heat sink 3. The passive heat dissipation by heat exchange and the active heat dissipation by the fan 4 are combined to maximize the heat dissipation efficiency in the smallest space, thereby ensuring the working performance and circuit safety. The surface temperature of the whole machine during operation is reduced, and the problem of poor user experience caused by the excessively high temperature of the device during wearing is solved. The structure space is reasonably stacked, the volume and weight are controlled, and the product lightweight, comfortable wearing and other research and development requirements are met.

[0060] For example, the fixing support 2 can be made of metal, but is not limited thereto, as long as heat conduction can be achieved.

[0061] It should be noted that the head-mounted display device is divided into many types, and the functions thereof are roughly the same, but there are slight differences. In the VR glasses, the image or video displayed and projected by the optical engine module 10 is a virtual scene, while in the AR glasses, the optical engine module 10 not only displays and projects a virtual scene, but also displays and projects a real scene. At this time, the camera module also needs to be used. The fixing support 2 of the head-mounted display device of the embodiment not only achieves the function of fixing the optical engine module 10, but also achieves the function of fixing the camera module.

[0062] In the exemplary embodiment, the top of the fixing support 2 is provided with a mainboard 6 electrically connected with the optical engine module 10 and the camera module. The heat dissipation structure further comprises a heat conduction plate 1. The heat conduction plate 1 comprises a first heat conduction part 101. The first heat conduction part 101 is located on the side of the mainboard 1 away from the fixing support 2, and is used to conduct the heat of the heat generating device on the mainboard 1 to the heat sink 3.

[0063] For example, the heat conduction plate further comprises a second heat conduction part 102 connected with the first heat conduction part 101 in an L shape. The second heat conduction part 102 is located on the back of the fixing support 2 in the first direction (X direction in the reference Figure 1 The first direction is the direction from the forehead of the user to the back of the head of the user when the user wears the head-mounted display device. The back is the side of the fixing support close to the forehead of the user.

[0064] The first heat-conducting part 101 can be directly connected with the heat-generating device (for example, a chip) on the mainboard 6, or indirectly connected with the heat-generating device on the mainboard 6. In an exemplary embodiment, the first heat-conducting part 101 is connected with the heat-generating device on the mainboard 6 through a heat-conducting silica gel pad 5. The heat-conducting silica gel pad 5 can not only realize heat conduction, but also has a buffering effect, thereby protecting the heat-generating device on the mainboard 6 and fixing the heat-conducting plate 1.

[0065] In an exemplary embodiment, in order to enhance the connection stability between the heat-conducting plate 1 and the fixing support 2, the heat-conducting plate 1 and the fixing support 2 are fixed through a screw.

[0066] In an exemplary embodiment, the heat-conducting plate 1 can be made of a heat-conducting material such as metal.

[0067] In an exemplary embodiment, the first heat-conducting part 101 and the second heat-conducting part 102 can be an integral structure, which is convenient for assembly and conducive to the conduction of heat from the optical engine module 10 and the camera module to the heat sink 3.

[0068] In an exemplary embodiment, the first heat-conducting part 101 is arranged parallel to the mainboard 6, so as to be connected with the heat-generating device on the mainboard 6. The second heat-conducting part 102 is bent from the first heat-conducting part 101, so as to be located on the back of the fixing support 2 and connected between the fixing support 2 and the heat sink 3, thereby facilitating heat conduction. The second heat-conducting part 102 can be arranged perpendicular to the first heat-conducting part 101, or non-perpendicular, as long as heat conduction can be realized, which is not limited herein.

[0069] Reference Figure 5 The top of the fixing support 2 near the side of the forehead of the user is recessed to form a notch 2101 in a direction away from the forehead of the user, so as to accommodate the second heat-conducting part 102. The notch 2101 reduces the space of the head-mounted part in the first direction.

[0070] In an exemplary embodiment, in a second direction perpendicular to the first direction, the heat sink 3 includes a heat dissipation pipe 302 and a fan 4 located at opposite ends of the heat dissipation pipe 302. The heat dissipation pipe 302 and the second heat-conducting part 102 are directly or indirectly connected. The heat dissipation pipe 302 extends along the second direction (a direction perpendicular to the line of sight of the human eye when worn by the user). In the second direction, the two fans 4 are located at opposite sides of the optical engine module 10.

[0071] The head-mounted display device comprises two light machine modules 10, and the two light machine modules 10 are located between the two fans 4. That is, one light machine module 10 is arranged corresponding to one fan 4, which is beneficial to heat dissipation of the light machine module 10.

[0072] In an exemplary embodiment, in the second direction, one fan 4 is arranged on one side away from the other fan 4 with a heat sink 301. The arrangement of the heat sink 301 can increase the heat dissipation area, and the number of heat sinks 301 can be set according to actual needs.

[0073] Reference Figure 7 The shell comprises a top cover 201 and a bottom cover 202, the side of the top cover 201 is provided with an air outlet 11, and the bottom cover 202 is provided with an air inlet 12, the positions of the air inlet 12 and the air outlet 11 correspond to the positions of the heat sinks 31, so as to conduct the heat of the camera module and the light machine module 10 to the outside.

[0074] In an exemplary embodiment, referring to Figure 1 The middle part of the heat pipe 302 is connected with a U-shaped mounting groove 303, and the U-shaped mounting groove 303 is arranged towards the fixed support 2, so as to be connected with the second heat conduction part 102.

[0075] The second heat conduction part 102 is connected in contact with the bottom surface of the U-shaped mounting groove 303, so as to conduct heat to the heat pipe 302 and to the fan 4 through the heat pipe 302. The arrangement of the U-shaped mounting groove 303 increases the connection area between the heat pipe 302 and the second heat conduction part 102, and through this heat dissipation scheme, the heat at different positions and relatively concentrated in the equipment can be dispersed to the heat dissipation holes on both sides of the whole machine, the volume of the heat dissipation structure can be reduced as much as possible, the space for placing other functional devices is ensured, and the heat dissipation problem is effectively solved.

[0076] Reference Figure 5 and Figure 8 In an exemplary embodiment, the camera module comprises at least one first camera, the fixed support 2 has a main support 200 for mounting at least one first camera, and at least one stepped part 2000 is arranged on the mounting surface of the main support 200 away from the light machine module 10. The stepped part 2000 comprises a convex surface formed by locally protruding from the mounting surface, and a concave surface adjacent to the convex surface, the convex surface is used for mounting the first camera, and the concave surface is used for mounting a flexible circuit board 1001 connecting the first camera to the main board 6.

[0077] The setting of the stepped portion 2000 leaves sufficient gaps between the plurality of first cameras, guarantees the visual angle coverage of each camera, and provides sufficient space between the convex surface and the concave surface for placing the flexible circuit board 1001 connected to the corresponding camera. Figure 8 The fixing support 2 includes a plurality of stepped portions 2000, one stepped portion 2000 includes a first convex surface 211, a second convex surface 212, a third convex surface 213, a fourth convex surface 214, a first concave surface 215 formed with the first convex surface 211, a second concave surface (the first concave surface can be shared with the second concave surface) formed with the second convex surface 212, a third concave surface 218 formed with the third convex surface 213, and a fourth concave surface (the fourth concave surface can be shared with the third concave surface) formed with the fourth convex surface 214.

[0078] The top of the fixing support 2 fixes the main board 6 and the heat-conducting plate 1, the inside of the fixing support 2 fixes the optical engine module 10, the back of the fixing support 2 fixes the heat sink 3, and the front of the fixing support 2 fixes the camera module, which solves the problem of integrated arrangement of multiple devices, guarantees normal work of each function, and minimizes the volume to achieve a thin and light machine.

[0079] It should be noted that when the user wears the head-mounted display device, the optical engine module 10 and the camera module are arranged in sequence along the direction away from the human eye, that is, the side of the fixing support 2 away from the human eye is the front, and the side of the fixing support 2 close to the human eye is the back.

[0080] For example, the first camera can be a wide-angle camera 7, and the number of wide-angle cameras 7 can be set according to actual needs. Figure 5 Four wide-angle cameras 7 are arranged in the fixing support 2, and two wide-angle cameras 7 form a group, and two groups of wide-angle cameras are distributed on both sides of the fixing support 2 in the second direction (perpendicular to the direction of the human eye line).

[0081] In the example embodiment, the camera module includes at least one second camera, the fixing support 2 includes a connecting support (including a first connecting support 21 and a second connecting support 22, referring to Figures 8-11 The connecting surface of the connecting support for connecting with the second camera is arranged at an angle between the mounting surface, so that at least one first camera and at least one second camera are arranged tangent to the same curve (referring to Figure 6 The dashed curve in FIG. 6).

[0082] For example, the second camera can be a high-definition camera 9, and the number of high-definition cameras 9 can be set according to actual needs.

[0083] Exemplarily, the second camera can also be a TOF camera (depth camera), and the first connecting bracket 21 is used for fixing the TOF camera. The first connecting bracket 21 has a convex structure, a positioning column is arranged on the first subpart 2003, and screw holes are arranged on the second subpart 2004. Referring to Figure 11 .

[0084] In an exemplary embodiment, referring to Figure 10 , the connecting bracket comprises a mounting groove 2001 and a connecting column 2002 connecting the mounting groove 2001 to the fixing bracket 2 (the connecting column 2002 can be fixed on the fixing bracket 2 by screws, but is not limited thereto), Figure 10 In an exemplary embodiment, the side of the connecting column 2002 away from the mounting groove 2001 is provided with a connecting plate 2006, and screw holes are arranged on the connecting plate 2006 for screws to pass through and be fixed on the fixing bracket 2. The mounting groove 2001 is a box structure with an open end, and the open end faces away from the mounting surface, so that the second camera is mounted in the mounting groove 2001, and when a user wears it, the camera lens faces forward of the human eye. The side of the box structure is provided with a notch 2005 for the flexible circuit board 1001 connected to the second camera to pass through. The fixing bracket 2 is provided with a first area, and the orthographic projection of the mounting groove 2001 on the fixing bracket 2 at least partially covers the first area 217. An adapter FPC connected to the flexible circuit board is arranged in the first area 217, which completely hides the adapter connector under the mounting groove, reduces the assembly space, saves the space of the adapter FPC, and makes the whole machine more compact.

[0085] It should be noted that a reinforcing steel sheet is arranged on the adapter FPC to increase the strength of the adapter FPC.

[0086] In an exemplary embodiment, the camera module further comprises a TOF (Time off light) depth camera 8 for obstacle avoidance and safe guidance of a user using a VR device.

[0087] Referring to Figure 5 , exemplarily, the TOF camera is arranged at the middle position of the front of the fixing bracket 2, wide-angle cameras 7 are symmetrically arranged on the opposite sides of the TOF camera, and a high-definition camera 9 can be arranged on one side of the TOF camera.

[0088] Referring to Figure 4 , in an exemplary embodiment, the first heat-conducting part 101 comprises a plurality of crimping parts 13, and the plurality of crimping parts 13 are used for covering the flexible circuit board 1001 connected to at least one first camera and the flexible circuit board 1001 connected to at least one second camera.

[0089] Exemplarily, the crimping portions 103 are formed by the first heat-conducting portions 101 extending outwardly in a direction parallel to the first heat-conducting portions 101, the number of the crimping portions 103 is the same as that of the flexible circuit boards 1001 connected with the at least one first camera and the flexible circuit boards 1001 connected with the at least one second camera, and the arrangement positions of the crimping portions 103 correspond to the flexible circuit boards 1001 connected with the at least one first camera and the flexible circuit boards 1001 connected with the at least one second camera, Figure 4 In the embodiment, the first heat-conducting portions 101 are provided with five crimping portions 103 to crimp the corresponding flexible circuit boards, so as to fix the flexible circuit boards, improve the connection stability of the flexible circuit boards, and realize heat dissipation of the flexible circuit boards.

[0090] In an exemplary embodiment, the head-wearing portion includes a headband body, and the head-mounted portion is connected to the headband body through a rotating shaft connecting assembly. The rotating shaft connecting assembly is arranged such that the head-mounted portion can be adjusted in angle, facilitating the use of the user.

[0091] Reference Figure 12 Exemplarily, the rotating shaft connecting assembly can include a connecting portion 1011 arranged in a first direction and a rotating portion 1012. The connecting portion 1011 is used to connect with the headband body, and the rotating portion 1012 is rotatably connected with the shell of the head-mounted portion. The first direction is from the camera module to the optical-mechanical module 10. The rotating portion 1012 includes a fixed seat and a one-letter damping rotating shaft located at opposite ends of the fixed seat in a third direction. The third direction is perpendicular to the first direction, and the third direction is tangent to the circumferential direction of the headband body.

[0092] In an exemplary embodiment, the head-wearing portion includes a headband body, and one side of the headband body is provided with an opening. Two arc-shaped adjusting bands are arranged at the opening.

[0093] The head-wearing portion further includes a battery box front cover 311 and a battery box shell 314. The battery box front cover 311 and the battery box shell 314 jointly form a containing cavity. A through hole for the arc-shaped adjusting band to pass through is arranged on the side wall of the containing cavity.

[0094] The arc-shaped adjusting band includes an adjusting band body 317 and a rack 313 arranged at a portion of the adjusting band body 317 close to the opening. The thickness of the rack 313 is less than that of the adjusting band body 317.

[0095] The accommodating cavity corresponds to the outward (direction close to the battery box front cover 311) convex part of the rack 313 to form a wiring area 32. Referring to Figure 15 The rack movement space 31 is an arc-shaped movement area, and the battery compartment 33 is located on the side of the wiring area 32 away from the rack movement space 31.

[0096] The thickness of the rack 313 is less than the thickness of the adjustment band body 317, that is, the thickness of the rack 313 is thinned relative to the thickness of the adjustment band body 317, thereby providing a space for the area corresponding to the accommodating cavity to be convex outward to form the wiring area 32, and providing a space for the power cord wiring. The thickness of the entire movement mechanism is reduced, and the gap (step difference between the rack 313 and the adjustment band body 317) of the stroke can be used as a limit for the minimum adjustment range of the headgear, and the movement fluency, accuracy and safety are greatly increased. Referring to Figure 17 The battery box shell 314 has a connecting surface towards the battery box front cover 311, the connecting surface is provided with a gear mounting hole 321, at the wiring area 32, the connecting surface forms a protrusion 323, the protrusion 323 is provided with a through hole 322, the power cord passes through the through hole 322 and then enters the wiring area 32, and then is bent to reserve the length of the headgear adjustment, and then is bent upwards to be buckled on the battery main plate above the battery compartment 33. The area of the power cord bending is just the space formed by the protruding part, which ensures that the power cord has enough space to move.

[0097] In an exemplary embodiment, the adjustment band body 317 has a first side and a second side arranged opposite along the width direction thereof, the first side is provided with the rack 313, and the second side is partially recessed to form a track 3171, the rack 313 of one arc-shaped adjustment band is movably connected to the track 3171 of another arc-shaped adjustment band. Referring to Figure 13 .

[0098] Exemplarily, a rack cover plate 312 is arranged between the battery box shell 314 and the battery box front cover 311, and a shaft hole 3120 is arranged in the middle of the rack cover plate 312 for the gear transmission shaft to pass through (refer to Figure 13), in the moving direction of the rack 313, opposite sides of the shaft hole 3120 are provided with rack limiting grooves 3121, one end of the rack 313 away from the corresponding adjusting band body 317 is provided with a limiting column, and the limiting column is matched with the rack limiting groove 3121 located on the side of the gear mounting hole 321 away from the limiting column. Specifically, the two adjusting band bodies 317 are respectively named as a first adjusting band body and a second adjusting band body, the rack corresponding to the first adjusting band body is a first rack, the rack corresponding to the second adjusting band body is a second rack, the rack limiting groove close to the first adjusting band body is defined as a first rack limiting groove, and the rack limiting groove close to the second adjusting band body is defined as a second rack limiting groove. At this time, the limiting column on the first rack is matched with the second rack limiting groove, and the limiting column on the second rack is matched with the first rack limiting groove, that is, the limiting column on the first rack is inserted into the second rack limiting groove and can move along the second rack limiting groove, and the limiting column on the second rack is inserted into the first rack limiting groove and can move along the first rack limiting groove. The above-mentioned staggered arrangement can effectively utilize the space and reduce the length of the whole rear shell.

[0099] The head-wearing part further comprises an adjusting structure for adjusting the circumferential length of the headband body by controlling the two arc-shaped adjusting bands to move towards or away from each other, wherein when the circumferential length of the headband body is the smallest, the distance between the limiting column of the first rack and the limiting column of the second rack is the farthest, and when the circumferential length of the headband body is the largest, the distance between the limiting column of the first rack and the limiting column of the second rack is the closest.

[0100] In an exemplary embodiment, the head-wearing part further comprises an adjusting structure for adjusting the circumferential length of the headband body by controlling the two arc-shaped adjusting bands to move towards or away from each other, wherein the adjusting structure comprises a gear meshing with the rack 313 structure, a ratchet wheel 316 arranged on the battery box shell, a transmission shaft arranged between the ratchet wheel 316 and the gear, and a knob 310 arranged on the battery box front cover 311, wherein the knob 310 is provided with a driving block 3011 capable of driving the ratchet wheel 316 to move, and the gear is provided with a gear limiting groove 321 capable of limiting the movement of the gear. Figure 22 .

[0101] In the example embodiment, a rack cover plate 312 is arranged between the battery box shell 314 and the battery box front cover 311, and the rack cover plate 312 is provided with a receiving portion 3122 for accommodating the ratchet wheel 316. The receiving portion 3122 is formed by an annular protrusion protruding from the rack cover plate 312, and the receiving portion is provided with an axle hole 3120 in the middle for the gear shaft to pass through. Along the circumferential direction of the receiving portion 3122, a plurality of ratchet teeth grooves are arranged on the inner side wall of the receiving portion 3122 to cooperate with the elastic ratchet arm of the ratchet wheel 316.

[0102] When the knob 310 is rotated, the driving block 3011 drives the elastic ratchet arm to rotate, and in turn drives the gear to rotate (the gear and the elastic ratchet arm are respectively fixed at the two ends of the transmission shaft in the axial direction, and the gear and the elastic ratchet arm move synchronously), so as to drive the two arc-shaped adjusting belts to move towards each other or away from each other to adjust the circumferential length of the head ring body through the cooperation of the gear and the rack 313 structure. Specifically, the free end of the elastic ratchet arm is hook-shaped, the driving block 3011 is located on the inner side of the hook-shaped free end, and the inner side surface of the hook-shaped free end is in contact with one side surface of the driving block to prevent the driving block from being detached from the clamping space between the elastic ratchet arm and the transmission shaft. The outer side surface of the elastic ratchet arm is provided with ratchet teeth, the ratchet teeth groove includes opposite first and second side walls, and the slope of the first side wall is greater than the slope of the second side wall. The slopes of the first and second side walls are different, the shape of the ratchet teeth is consistent with the shape of the ratchet teeth groove, the side with a larger slope of the ratchet teeth is in contact with the first side wall, and the side with a smaller slope of the ratchet teeth is in contact with the second side wall. When the driving block drives the elastic ratchet arm to rotate towards the first side wall, the elastic ratchet arm elastically deforms during rotation, so that the ratchet teeth move from one ratchet teeth groove to another ratchet teeth groove, at the same time, the gear cooperates with the rack 313 to reduce the circumferential length of the head ring body, and due to the larger slope of the first side wall, a clicking sound is emitted during rotation. When the driving block drives the elastic ratchet arm to rotate towards the second side wall, the elastic ratchet arm elastically deforms (the free end is offset inward) during rotation, so that the ratchet teeth move from one ratchet teeth groove to another ratchet teeth groove, at the same time, the gear cooperates with the rack 313 to increase the circumferential length of the head ring body, and due to the smaller slope of the second side wall, no sound is emitted, that is, the effects of increasing and reducing the circumferential length of the head ring body are different when the knob is rotated in different directions, so as to facilitate the differentiation between the operations of increasing and reducing the head circumference.

[0103] Reference Figure 14、 Figure 18 and Figure 19 In an exemplary embodiment, the bottom of the accommodating cavity is provided with a battery mounting port for mounting the battery 315, the battery mounting port is provided with a battery box rear cover 42 for plugging the battery 315, and the head-mounted part further comprises a battery lock structure comprising a clamping hook 45 provided on the side of the battery box rear cover 42.

[0104] The battery lock structure further comprises a power supply circuit board 41 and an adjusting plate 43, the power supply circuit board 41 is fixed to the bottom wall of the accommodating cavity, and the adjusting plate 43 is movably arranged on the bottom wall of the accommodating cavity, the first surface of the adjusting plate 43 is provided with a connecting rod 44 capable of being electrically connected to a connecting piece 47 on the power supply circuit board 41, and the second surface opposite to the first surface of the adjusting plate 43 is provided with a push piece 318 (see Figure 14 ), the push piece 318 is mounted in a mounting hole on the bottom wall of the accommodating cavity, and the push piece 318 is moved to move the adjusting plate 43 to change the connection state of the connecting rod 44 and the connecting piece 47.

[0105] Specifically, the power supply of the head-mounted display device comprises a main battery and a secondary battery, the main battery is the battery 315 which can be disassembled from the battery mounting port, through the use of the double batteries of the main battery and the secondary battery, when the main battery is replaced, the secondary battery can be switched to supply power, and after the main battery is replaced, the main battery can be switched to supply power, thereby prolonging the use time indefinitely. The head-mounted display device comprises a power supply switching circuit structure, the power supply switching circuit structure comprises a switching switch, the switching switch comprises the connecting piece 47 on the power supply circuit board 41 and the connecting rod 44 on the adjusting plate 43, in the main battery power supply state, the connecting piece 47 is connected with the connecting rod 44, and in the secondary battery power supply state, the connecting piece is disconnected with the connecting rod 44. The power supply switching circuit structure can further comprise a power supply control structure for controlling the main battery power supply when the connecting piece 47 is connected with the connecting rod 44, and controlling the secondary battery power supply when the connecting piece is disconnected with the connecting rod 44. It should be noted that the power supply switching circuit structure further comprises other circuit structures in addition to the switching switch, which should be understood by those skilled in the art, and will not be described here.

[0106] When the main battery needs to be replaced, the push piece 318 is moved to move the adjusting plate 43, so that the battery lock structure is in an open state, and the battery 315 can be disassembled from the battery mounting port. Figure 19At this time, the clamping hook 45 and the clamping block 46 protruding from one side of the adjusting plate 43 are disengaged, the battery box rear cover 42 can be detached, and the main battery can be detached; at the same time, the connecting rod 44 is separated from the connecting piece 47 on the power supply circuit board 41, so that the power supply state is switched to the sub-battery power supply. After replacing the main battery, the tab 318 is reversely rotated, the adjusting plate 43 is reversely moved, so that the battery structure is in a locked state, and the main battery is in a power supply state. Referring to Figure 18 At this time, the clamping hook 45 and the clamping block 46 protruding from one side of the adjusting plate 43 are disengaged, the battery box rear cover 42 can be detached, and the main battery can be detached; at the same time, the connecting rod 44 is separated from the connecting piece 47 on the power supply circuit board 41, so that the power supply state is switched to the sub-battery power supply. After replacing the main battery, the tab 318 is reversely rotated, the adjusting plate 43 is reversely moved, so that the battery structure is in a locked state, and the main battery is in a power supply state. Referring to

[0107] It should be noted that the sub-battery is in a power supply state only when the main battery is replaced, and the time for replacing the main battery is not long in general, so the frequency of replacing the sub-battery is low, and the sub-battery does not need to be replaced. However, in order to avoid the situation that the sub-battery cannot supply power due to the low power of the sub-battery caused by long-time use, the main battery can be used to charge the sub-battery. For example, the switching circuit structure includes a detection unit for detecting the power of the sub-battery, and when the power of the sub-battery is lower than a preset value, a signal is sent, and under the control of the power supply control structure, the main battery charges the sub-battery.

[0108] The following points need to be explained:

[0109] (1) The drawings of the embodiments of the present disclosure only involve the structures involved in the embodiments of the present disclosure, and other structures can be referred to the general design.

[0110] (2) For the sake of clarity, the thickness of the layer or region is exaggerated or reduced in the drawings used to describe the embodiments of the present disclosure, that is, these drawings are not drawn according to the actual proportion. It can be understood that when an element such as a layer, a film, a region or a substrate is referred to as being located “on” or “under” another element, the element can be “directly” located on or under another element or there can be an intermediate element.

[0111] (3) In the case of no conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0112] It can be understood that the above implementation is only an exemplary implementation adopted for illustrating the principle of the present utility model, and the present utility model is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present utility model, and these modifications and improvements are also regarded as the protection scope of the present utility model.

Claims

1. A head-mounted display device comprising a head-mounted display part having a display function, and a head-mounted part for supporting and fixing the head-mounted display part, and the head-mounted part is configured to fix the head-mounted display part in front of the eyes of a user when the user wears the head-mounted display device, characterized in that: the head-mounted display part comprises a housing and an optical engine module and a camera module arranged in the housing; the head-mounted display device further comprises a heat dissipation structure, the heat dissipation structure comprises a fixing support and a heat sink, and the heat sink comprises a fan; the fixing support is used for fixing the optical engine module and the camera module, and conducting heat of the optical engine module and the camera module to the heat sink. a top of the fixing support is provided with a mainboard electrically connected with the optical engine module and the camera module; the heat dissipation structure further comprises a heat conduction plate, the heat conduction plate comprises a first heat conduction part, the first heat conduction part is located on a side of the mainboard away from the fixing support, and is used for conducting heat of a heating device on the mainboard to the heat sink. the heat conduction plate further comprises a second heat conduction part connected with the first heat conduction part in an L shape, the second heat conduction part is located on a back surface of the fixing support in a first direction, and the second heat conduction part is located between the fixing support and the heat sink, the first direction is a direction from a forehead of the user to a back of the user when the user wears the head-mounted display device, and the back surface is a surface of the fixing support close to the forehead of the user.

2. The head-mounted display apparatus of claim 1, wherein the first heat conduction part is connected with the heating device on the mainboard through a heat-conducting silica gel pad. in a second direction perpendicular to the first direction, the heat sink comprises a heat dissipation pipe and fans located at opposite ends of the heat dissipation pipe, the heat dissipation pipe and the second heat conduction part are connected, so as to conduct heat of the heating device on the mainboard conducted through the second heat conduction part to the fans, and in the second direction, the two fans are respectively located on opposite sides of the optical engine module.

3. The head-mounted display apparatus of claim 2, wherein in the second direction, one of the fans is provided with a heat dissipation fin on a side away from the other fan.

4. The head-mounted display apparatus of claim 2, wherein a middle part of the heat dissipation pipe is connected with a U-shaped mounting groove, the U-shaped mounting groove is arranged towards the fixing support, so as to be connected with the second heat conduction part.

5. The head-mounted display apparatus of claim 3, wherein the camera module comprises at least one first camera, the fixing support has a main support for mounting at least one first camera, at least one stepped part is arranged on a mounting surface of the main support away from the optical engine module, the stepped part comprises a convex surface formed by locally protruding from the mounting surface, and a concave surface adjacent to the convex surface, the convex surface is used for mounting the first camera, and the concave surface is used for mounting a flexible circuit board connecting the first camera to the mainboard.

6. The head-mounted display apparatus of claim 5, wherein, the camera module comprises at least one second camera, the fixing support comprises a connecting support connected with the main support, a connecting surface of the connecting support for connecting with the second camera is arranged at an angle between the mounting surface, so that at least one first camera and at least one second camera are arranged tangent to the same curve.

7. The head-mounted display apparatus of claim 5, wherein ​ 8. The head-mounted display apparatus of claim 2, wherein, ​ 9. The head-mounted display apparatus of claim 8, wherein, ​ 10. The head-mounted display apparatus of claim 9, wherein, The first heat-conducting part comprises a plurality of crimping parts for covering the flexible circuit board connected with the at least one first camera and the flexible circuit board connected with the at least one second camera.

11. The head-mounted display apparatus of claim 1, wherein, The head-wearing part comprises a headband body, one side of the headband body is provided with an opening, two arc-shaped adjusting bands are arranged at the opening; The head-wearing part further comprises a battery box front cover and a battery box shell, the battery box front cover and the battery box shell jointly form a containing cavity, a through hole for the arc-shaped adjusting bands to pass through is arranged on the side wall of the containing cavity; The arc-shaped adjusting band comprises an adjusting band body and a rack arranged at the part of the adjusting band body close to the opening, the thickness of the rack is smaller than the thickness of the adjusting band body; The part of the containing cavity corresponding to the rack is protrudingly arranged towards the direction close to the battery box front shell to form a wiring area.

12. The head-mounted display apparatus of claim 11, wherein, The adjusting band body has a first side and a second side arranged oppositely along the width direction of the adjusting band body, the first side is provided with the rack, and the side surface of the second side is partially recessed to form a track, the rack of one arc-shaped adjusting band is movably connected to the track of another arc-shaped adjusting band.

13. The head-mounted display apparatus of claim 11, wherein, The head-wearing part further comprises an adjusting structure for adjusting the circumferential length of the headband body by controlling the two arc-shaped adjusting bands to move towards or away from each other, the adjusting structure comprises a gear wheel engaged with the rack, a ratchet wheel arranged on the battery box shell, a transmission shaft arranged between the ratchet wheel and the gear wheel, and a knob arranged on the battery box front cover, the knob is provided with a driving block capable of driving the ratchet wheel to move.

14. The head-mounted display apparatus of claim 13, wherein, A rack cover plate is arranged between the battery box shell and the battery box front cover, the rack cover plate is provided with a containing part for containing the ratchet wheel, opposite sides of the containing part in the moving direction of the rack are provided with rack limiting grooves, one end of the rack away from the corresponding adjusting band body is provided with a limiting column, and the limiting column is matched with the rack limiting groove on the side of the containing part away from the limiting column.

15. The head-mounted display apparatus of claim 11, wherein, A battery mounting port is arranged at the bottom of the containing cavity, the battery mounting port is provided with a battery box rear cover, and the head-wearing part further comprises a battery lock structure, the battery lock structure comprises a clamping hook arranged at the side edge of the battery box rear cover; The battery lock structure further comprises a power supply circuit board and an adjusting plate, the power supply circuit board is fixed to the bottom wall of the containing cavity, the adjusting plate is movably arranged on the bottom wall of the containing cavity, a connecting rod capable of being electrically connected with a connecting piece on the power supply circuit board is arranged on the first surface of the adjusting plate, a pressing piece is arranged on the second surface of the adjusting plate opposite to the first surface, the pressing piece is mounted in a mounting hole on the bottom wall of the containing cavity, and the adjusting plate is moved to change the connection state of the connecting rod and the connecting piece by pressing the pressing piece.

Images