Neck-worn device and wearable device

Abstract

Provided is a neck-worn device, comprising: a shell, arranged around a channel for providing a wearing space; a mainboard, located inside the shell; an audio component, located inside the shell; and a first camera, located inside the shell. The first camera is electrically connected to the audio component by means of the mainboard; the shell has a first hollow hole; the first hollow hole exposes at least part of the first camera; and the first hollow hole is located on the side of the shell close to the channel.

Description

Neck-worn devices and wearables Technical Field

[0001] The present disclosure relates to the field of display technology, and in particular to a neck-worn device and a wearable apparatus. Background Art

[0002] Extended Reality (XR) technology is a general term for multiple immersive technologies including Virtual Reality (VR), Augmented Reality (AR), and Mixed Reality (MR). It combines computer technology with wearable devices to create an environment that blends the real and virtual, enabling human-computer interaction, and can bring more convenience and innovation to people's lives and work.

[0003] The above information disclosed in this section is only for understanding the background of the inventive concept of the present disclosure and therefore the above information may contain information that does not constitute prior art.

[0004] Summary of the Invention

[0005] In one aspect, a neck-worn device is provided, comprising:

[0006] A shell, the shell being arranged around a hole for providing a wearing space;

[0007] a mainboard, located inside the housing;

[0008] an audio component located inside the housing; and

[0009] a first camera, located inside the housing;

[0010] The first camera is electrically connected to the audio component through the mainboard, the shell has a first hollow hole, the first hollow hole exposes at least a portion of the first camera, and the first hollow hole is located on a side of the shell close to the channel.

[0011] According to some exemplary embodiments, the shell includes a hanging area located on one side of the channel along the first direction, and the neck-mounted device includes at least two of the first cameras, and at least two of the cameras are respectively located on both sides of the channel along the second direction, and the second direction is perpendicular to the first direction.

[0012] According to some exemplary embodiments, the neck-worn device further includes at least two microphones located within the shell, the at least two microphones being respectively located on both sides of the hole along the second direction, and the microphones being electrically connected to the audio component through the mainboard.

[0013] According to some exemplary embodiments, the neck-worn device includes at least two audio components, and the two audio components are located on both sides of the channel along the second direction; and

[0014] In at least one of the audio components, at least one microphone is provided on a side of the audio component close to the hanging area, and at least one microphone is provided on a side of the audio component away from the hanging area.

[0015] According to some exemplary embodiments, in at least one of the audio components, the number of microphones located on a side of the audio component close to the hanging area is less than the number of microphones located on a side of the audio component away from the hanging area.

[0016] According to some exemplary embodiments, at least two of the first cameras are symmetrically distributed on both sides of the channel along the second direction; and / or,

[0017] At least two microphones are symmetrically distributed on both sides of the channel along the second direction.

[0018] According to some exemplary embodiments, the shell has a first recessed portion, the first recessed portion is recessed toward the inner side of the shell, and the first hollow hole is located in the first recessed portion.

[0019] According to some exemplary embodiments, the first camera includes an infrared camera, and the neck-mounted device further includes a filter, which covers the first hollow hole and absorbs green light and blue light and allows red light and infrared light to pass through.

[0020] According to some exemplary embodiments, the neck-worn device further includes a plurality of second cameras located within the shell, wherein the plurality of second cameras are arranged at intervals along the circumferential direction of the shell, and the shooting fields of two adjacent second cameras partially overlap, and the shell includes a plurality of second hollow holes, and the plurality of second hollow holes expose at least a portion of the plurality of second cameras.

[0021] According to some exemplary embodiments, the housing has an opening, and two ends of the housing are located on both sides of the opening along the second direction; and

[0022] The multiple second cameras include two first sub-cameras and multiple second sub-cameras, the two first sub-cameras are respectively located on both sides of the opening along the second direction, and the multiple second sub-cameras are located between the two first sub-cameras and are spaced apart along the circumferential direction of the housing;

[0023] The spacing between two adjacent second sub-cameras is substantially equal to the spacing between another two adjacent second sub-cameras, and / or the spacing between two adjacent second sub-cameras is substantially equal to the spacing between the first sub-camera and the adjacent second sub-camera.

[0024] According to some exemplary embodiments, the main optical axes of two adjacent second sub-cameras intersect, and / or the main optical axis of the first sub-camera intersects with the main optical axis of the adjacent second sub-camera.

[0025] According to some exemplary embodiments, the angle between the main optical axes of two adjacent second sub-cameras is basically equal to the angle between the main optical axes of another two adjacent second sub-cameras, and / or the angle between the main optical axes of two adjacent second sub-cameras is basically equal to the angle between the main optical axes of the first sub-camera and the adjacent second sub-camera.

[0026] According to some exemplary embodiments, directions of the main optical axes of the two first sub-cameras are substantially parallel.

[0027] According to some exemplary embodiments, the second hollow hole exposing the second sub-camera is located on a side of the shell away from the hole; and / or the second hollow hole exposing the first sub-camera is located on a side of the shell close to the opening.

[0028] According to some exemplary embodiments, imaging planes of at least two of the second cameras are substantially parallel to the same straight line, and / or horizontal field of view directions of at least two of the second cameras are substantially perpendicular to the same straight line.

[0029] According to some exemplary embodiments, the neck-mounted device also includes a third camera, which is located in the shell and electrically connected to the main board. The shell has a third hollow hole, and the third hollow hole exposes at least a portion of the third camera. The third camera is arranged adjacent to the first sub-camera, and the main optical axis of the third camera forms a preset angle with the main optical axis of the first sub-camera.

[0030] According to some exemplary embodiments, the neck-mounted device further includes two third cameras, and the two third cameras are respectively arranged adjacent to the two first sub-cameras. In the adjacent third cameras and the first sub-cameras, the field of view of the third camera partially overlaps with the shooting field of view of the first sub-camera.

[0031] According to some exemplary embodiments, a plane defined by a principal optical axis of one third camera and a principal optical axis of an adjacent first sub-camera is substantially parallel to a plane defined by a principal optical axis of another third camera and a principal optical axis of an adjacent first sub-camera; and / or,

[0032] The main optical axis of the third camera forms an acute angle with the main optical axis of the adjacent first sub-camera.

[0033] According to some exemplary embodiments, the neck-worn device further includes a heat dissipation component, which is located on a side of the mainboard away from the hole. The heat dissipation component includes a heat dissipation fan, which is configured to discharge air in a direction away from the mainboard. A plurality of air inlet hollow portions are provided on the side of the shell close to the hole, and a plurality of air outlet hollow portions are provided on the side of the shell away from the hole.

[0034] According to some exemplary embodiments, the size of the air inlet hollow portion is larger than the size of the air outlet hollow portion.

[0035] According to some exemplary embodiments, the multiple air outlet hollow portions are located on the side of the heat dissipation assembly away from the mainboard, the shell has a wind shield portion on the side close to the channel, the wind shield portion is located on the side of the mainboard close to the channel, and the multiple air inlet hollow portions are arranged around the wind shield portion.

[0036] According to some exemplary embodiments, the plurality of air inlet hollow portions are located on one side of the wind shield portion along the second direction and are spaced apart in a direction close to the opening.

[0037] According to some exemplary embodiments, the hollow shape of the air inlet hollow portion includes a long strip, and in the multiple air inlet hollow portions located between the wind shield portion and the opening, the extension direction of the air inlet hollow portion forms an acute angle with the extension direction of the opening toward the wind shield portion.

[0038] According to some exemplary embodiments, the multiple air inlet hollow portions include a first air inlet portion and a second air inlet portion, the first air inlet portion is located between the second air inlet portion and the wind shield portion, and the distribution density of the air inlet hollow portions in the first air inlet portion is less than the distribution density of the air inlet hollow portions in the second air inlet portion.

[0039] In yet another aspect, a neck-worn device is provided, comprising:

[0040] a housing, the housing being arranged circumferentially and having a hole located in the middle of the housing;

[0041] a mainboard, located inside the housing; and

[0042] a plurality of second cameras, located inside the housing, wherein the second cameras are electrically connected to the mainboard;

[0043] The multiple second cameras are spaced apart along the circumferential direction of the shell, and the shooting fields of two adjacent second cameras partially overlap. The shell has multiple second hollow holes, and the multiple second hollow holes expose at least a portion of the multiple second cameras.

[0044] On the other hand, a wearable device is provided, comprising the neck-worn device as described in any one of the above items. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Features and advantages of the present disclosure will become more apparent by describing in detail exemplary embodiments of the present disclosure with reference to the accompanying drawings.

[0046] FIG1 schematically shows a wearing diagram of a wearable device according to some embodiments of the present disclosure.

[0047] FIG2 schematically illustrates an external structure diagram of a neck-worn device at one viewing angle according to some embodiments of the present disclosure.

[0048] FIG3 schematically shows an external structure diagram of a neck-mounted device according to some embodiments of the present disclosure from another perspective.

[0049] FIG4 schematically illustrates a structural diagram of an audio component of a neck-worn device according to some embodiments of the present disclosure.

[0050] FIG5 schematically shows an exploded view of a neck-worn device according to some embodiments of the present disclosure.

[0051] 6A and 6B schematically illustrate structural diagrams of a rear end portion of a second shell on one side of a neck-worn device according to some embodiments of the present disclosure.

[0052] 7A and 7B schematically illustrate structural diagrams of the rear end portion of the second shell on the other side of the neck-worn device according to some embodiments of the present disclosure.

[0053] FIG8 schematically shows an exploded view of a first housing of a neck-worn device according to some embodiments of the present disclosure.

[0054] FIG9 schematically illustrates a structural diagram of an audio component of a neck-worn device according to some embodiments of the present disclosure.

[0055] FIG10 schematically illustrates an internal structure diagram of a first shell of a neck-worn device according to some embodiments of the present disclosure.

[0056] FIG11 schematically shows a distribution structure diagram of the second camera of the neck-mounted device according to some embodiments of the present disclosure.

[0057] FIG12 schematically illustrates a combined diagram of the shooting field of view of the second camera of a neck-mounted device according to some embodiments of the present disclosure.

[0058] FIG13 schematically illustrates a schematic diagram of the shooting principle of a camera of a neck-mounted device according to some embodiments of the present disclosure.

[0059] Figure 14A schematically shows a combined diagram of the shooting field of view of the third camera of the neck-mounted device according to some embodiments of the present disclosure.

[0060] Figure 14B schematically shows a combined view of the shooting fields of view of the third camera and the first sub-camera of the neck-mounted device according to some embodiments of the present disclosure.

[0061] 15A and 15B schematically illustrate exploded views of a neck pad assembly of a neck-worn device according to some embodiments of the present disclosure.

[0062] 16A and 16B schematically illustrate exploded views of a second housing body portion of a neck-worn device according to some embodiments of the present disclosure.

[0063] FIG17 schematically illustrates an exploded view of a heat dissipation assembly of a neck-worn device according to some embodiments of the present disclosure.

[0064] FIG18 schematically illustrates a heat dissipation principle diagram of a heat dissipation assembly of a neck-worn device according to some embodiments of the present disclosure.

[0065] FIG19 schematically shows a main structural block diagram of a wearable device according to some embodiments of the present disclosure.

[0066] FIG20 schematically shows a main flow chart of a positioning method according to some embodiments of the present disclosure.

[0067] Figure 21 schematically shows a flow chart of the steps of obtaining the relative positioning of the head-mounted device and the neck-mounted device of the wearable device based on the first inertial navigation data and image data of the wearable device according to some embodiments of the present disclosure.

[0068] FIG22 schematically shows a main flow chart of a sound playing method according to some embodiments of the present disclosure. DETAILED DESCRIPTION

[0069] To make the purpose, technical solutions, and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0070] It should be noted that in the drawings, the sizes and relative sizes of elements may be exaggerated for clarity and / or descriptive purposes. Thus, the sizes and relative sizes of the individual elements are not necessarily limited to those shown in the drawings. In the specification and drawings, the same or similar reference numerals indicate the same or similar parts.

[0071] When an element is described as being "on" another element, "connected to" another element, or "coupled to" another element, the element may be directly on the other element, directly connected to the other element, or directly coupled to the other element, or there may be an intermediate element. However, when an element is described as being "directly on" another element, "directly connected to" another element, or "directly coupled to" another element, there is no intermediate element. Other terms and / or expressions used to describe the relationship between elements should be interpreted in a similar manner, for example, "between..." versus "directly between...", "adjacent" versus "directly adjacent," or "on..." versus "directly on...", etc. In addition, the term "connected" may refer to a physical connection, an electrical connection, a communication connection, and / or a fluid connection. In addition, the X-axis, Y-axis, and Z-axis are not limited to the three axes of a rectangular coordinate system, and may be interpreted in a broader sense. For example, the X-axis, Y-axis, and Z-axis may be perpendicular to each other, or may represent different directions that are not perpendicular to each other. For the purposes of this disclosure, “at least one of X, Y, and Z” and “at least one selected from the group consisting of X, Y, and Z” may be interpreted as only X, only Y, only Z, or any combination of two or more of X, Y, and Z, such as XYZ, XY, YZ, and XZ. As used herein, the term “and / or” includes any and all combinations of one or more of the associated listed items.

[0072] It should be noted that although the terms "first," "second," etc. may be used herein to describe various parts, components, elements, regions, layers, and / or portions, these parts, components, elements, regions, layers, and / or portions should not be limited by these terms. Rather, these terms are used to distinguish one part, component, element, region, layer, and / or portion from another. Thus, for example, the first part, first member, first element, first region, first layer, and / or first portion discussed below may be referred to as a second part, second member, second element, second region, second layer, and / or second portion without departing from the teachings of the present disclosure.

[0073] For ease of description, spatially relative terms, such as "upper," "lower," "left," "right," etc., may be used herein to describe the relationship of one element or feature to another element or feature as shown in the figures. It should be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features.

[0074] As used herein, the terms "substantially," "about," "approximately," "roughly," and other similar terms are used as terms of approximation rather than as terms of degree, and are intended to account for the inherent deviations in measured or calculated values ​​that would be recognized by one of ordinary skill in the art. To account for factors such as process fluctuations, measurement problems, and errors associated with the measurement of a particular quantity (i.e., limitations of the measurement system), "about" or "approximately" as used herein are inclusive of the stated value and mean within an acceptable range of deviation for the particular value as determined by one of ordinary skill in the art. For example, "approximately" can mean within one or more standard deviations, or within ±30%, ±20%, ±10%, ±5% of the stated value.

[0075] The inventors have discovered that when users use VR / AR / MR devices to watch movies or play games, the display system provides an immersive experience. However, current audio only supports two-channel surround sound, resulting in a weak sense of presence. Users also expect to experience an immersive 3D sound field. When the viewer's movements and behavior change, the direction of the sound source in virtual reality has changed for the user, but the direction of the sound source reproduced by the audio playback device worn by the viewer, such as (headphones), does not change accordingly. This greatly affects the immersive feeling created by the virtual image and reduces the user experience. In addition, whether it is in-ear headphones or headphones, long-term wearing can easily affect the user's hearing ability, after all, it is a relatively closed sound environment. The harm of in-ear headphones is relatively more obvious. Wearing them too frequently can easily induce problems such as ear canal inflammation. Wearing earbuds for a long time can be uncomfortable and may even cause ear canal inflammation, while wearing earbuds in the summer can easily cause stuffiness and sweating. In response to this situation, split-body wearable devices have emerged, consisting of a head-mounted display (HMD) and a neckband. The HMD displays images, while the neckband's speakers play sound. In split-body devices, the speakers are no longer fixed relative to the wearer's ears, raising the issue of accurate positioning between the two.

[0076] FIG1 schematically shows a wearing diagram of a wearable device according to some embodiments of the present disclosure.

[0077] Referring to Figure 1 , a wearable device includes a head-mounted device 10 and a neck-mounted device 20. The head-mounted device 10 and the neck-mounted device 20 are electrically connected, with the head-mounted device 10 worn on the user's face and the neck-mounted device 20 worn around the user's neck. The neck-mounted device 20 may include components such as a motherboard 22 and a battery, thereby reducing the size and weight of the head-mounted device 10 and improving the wearing comfort of the wearable device. The neck-mounted device 20 can be detachably connected to the head-mounted device 10 via a magnetic cable, allowing the neck-mounted device 20 to provide power and signal transmission to the head-mounted device 10.

[0078] It should be noted that the electrical connection between the head-mounted device 10 and the neck-mounted device 20 means that signals can be transmitted between the head-mounted device 10 and the neck-mounted device 20, for example, power signals, communication signals, control signals, etc. can be transmitted.

[0079] It should also be noted that the split wearable device according to the embodiment of the present disclosure may include smart glasses with AR, VR, and MR display functions; it may also include devices without display functions, such as head massage devices, which in some scenarios also require soothing stereo music to allow people to relax more.

[0080] Figure 2 schematically illustrates the external structure of a neck-worn device according to some embodiments of the present disclosure from one viewing angle. Figure 3 schematically illustrates the external structure of a neck-worn device according to some embodiments of the present disclosure from another viewing angle. Figures 2 and 3 respectively illustrate the structure as viewed from different viewing angles.

[0081] With reference to Figures 2 and 3 , the neck-worn device has a shell 21, which is arranged around a hole 21A for providing a wearing space. The shell 21 is a hollow structure, and various corresponding functional components are arranged in the internal accommodating cavity of the shell 21, as described below. The shell 21 includes a hanging area 21B, which should be understood as an area for hanging on the user's neck, that is, when the user wears the neck-worn device, the hanging area 21B of the shell 21 is roughly located at the back of the user's neck, and the user's neck is located in the hole 21A. In order to more clearly describe the relevant structure of the neck-worn device, the direction of the hanging area 21B relative to the hole 21A is defined as the first direction X, that is, the hanging area 21B is located on one side of the hole 21A along the first direction X.

[0082] FIG4 schematically illustrates a structural diagram of an audio component of a neck-worn device according to some embodiments of the present disclosure.

[0083] Referring to Figures 2 and 4 , an audio component 23 is disposed within the housing 21, enabling the neckwear device to play audio. The audio component 23 is electrically connected to a motherboard 22 within the housing 21, which can be located in the suspension area 21B of the housing 21. The motherboard 22 is equipped with a chip that controls the audio component 23 to play the desired audio.

[0084] The neck-worn device also includes a first camera 241 located within the housing 21. The first camera 241 is electrically connected to the audio component 23 via the mainboard 22. The housing 21 is provided with a first hollow hole 251, which exposes at least a portion of the first camera 241. The first hollow hole 251 is located on a side of the housing 21 near the hole 21A. The first camera 241 can capture images toward the exterior of the housing 21 and toward the hole 21A through the first hollow hole 251. When a user wears the neck-worn device, the first camera 241 can obtain the user's ear position information and send this ear position information to the mainboard 22. The mainboard 22 adjusts the audio curve of the audio data source signal based on the ear position information to generate an audio data playback signal. The audio component 23 plays audio based on the audio data playback signal, which can enhance the sense of direction and spatiality of the sound, as well as its interaction with the environment, providing the user with a richer and more realistic auditory experience.

[0085] According to some exemplary embodiments, the images captured by the first camera 241 can be transmitted to the mainboard 22 via wireless technology or other means. The wireless technology can be selected from Bluetooth technology, wireless serial port, WiFi, or wireless network communication technology that complies with the 5G WiFi communication protocol to ensure data transmission rate and data throughput.

[0086] According to some exemplary embodiments, the communication between the first camera 241 and the mainboard 22 may also be achieved through a connecting line.

[0087] According to some exemplary embodiments, obtaining the user's ear position information may include: obtaining the positional relationship of the head-mounted device relative to the first camera 241 through the image captured by the first camera 241, taking the first camera 241 as the origin, the three-dimensional coordinates of the head-mounted device in the camera coordinate system can be obtained, the installation position of the first camera 241 on the neck-mounted device is known, and then the three-dimensional coordinates of the neck-mounted device in the first camera 241 coordinate system can be obtained, and the positional relationship between the head-mounted device and the neck-mounted device is obtained through the first camera 241 coordinate system. The position of the audio component in the neck-mounted device is fixed, and the relative position of the head-mounted device and the user's ear is fixed. The mainboard can then obtain the relative positioning of the audio component and the ear based on the relative positioning of the head-mounted device and the neck-mounted device. Figure 5 schematically shows an exploded view of a neck-mounted device according to some embodiments of the present disclosure.

[0088] 2 and 5 , the housing 21 includes a first housing 211 and a second housing 212, which are connected to form a cavity. The first housing 211 is located on the side of the second housing 212 away from the hole 21A. That is, when worn, the second housing 212 is closer to the user's neck. A first hollow hole 251 is located on the second housing 212. Through the first hollow hole 251 on the second housing 212, the first camera 241 can capture images in the direction of the user's ear.

[0089] 5 , the second housing 212 includes a second housing body 2121 and two second housing tail portions 2122. The first housing body 2121 is generally U-shaped, with the two second housing tail portions 2122 located at either end of the second housing body 2121. The two second housing tail portions 2122 are connected to both ends of the first housing 211, respectively. The second housing body 2121 is connected to the remaining portion of the first housing 211. A first hollow hole 251 is located in the second housing tail portion 2122. For example, the first hollow hole 251 is located on a side of the second housing tail portion 2122 close to the second housing body 2121. This location of the first hollow hole 251 facilitates the first camera 241 in acquiring ear position information.

[0090] 2 and 4 , the neck-worn device includes two first cameras 241, which are respectively located on both sides of the channel 21A along the second direction Y. The first direction X is approximately perpendicular to the second direction Y, so that when the user wears the neck-worn assembly, the two first cameras 241 are approximately located below the user's left ear and right ear. The two first cameras 241 can be used to obtain position information of the user's left ear and right ear, respectively.

[0091] The second housing 212 is provided with two first hollow holes 251. The two first cameras 241 respectively capture images toward the user's left and right ears through the two first hollow holes 251, thereby respectively identifying the user's left and right ear position information. The two first hollow holes 251 are located on either side of the channel 21A along the second direction Y. For example, one first hollow hole 251 is located on one second housing rear end 2122, and the other first hollow hole 251 is located on the other second housing rear end 2122.

[0092] According to some exemplary embodiments, in combination with FIG2 and FIG4, the two first cameras 241 are roughly symmetrically distributed on both sides of the channel 21A along the second direction Y, that is, the two first hollow holes 251 are roughly symmetrically distributed on both sides of the channel 21A along the second direction Y. Such a setting is conducive to more accurately obtaining the user's ear position information based on the images respectively taken by the two first cameras 241, and at the same time can simplify the algorithm for obtaining the user's ear position information through the images taken by the first camera 241.

[0093] Figures 6A and 6B schematically illustrate the structure of the rear end portion of the second housing on one side of a neck-worn device according to some embodiments of the present disclosure. Figures 6A and 6B illustrate the structure from different angles, respectively. Figures 6A and 6B illustrate the rear end portion of the second housing on one side and related structures mounted thereon. For greater clarity, the related structures are shown in a state in front of the rear end portion of the second housing.

[0094] 6A and 6B , a first hollow hole 251 is provided on the rear end portion 2122 of the second shell. For the convenience of description, the rear end portion 2122 of the second shell is referred to as the left shell rear end portion, which is located on the left side of the user when worn. A reserved bone position 241a for installing the first camera 241 is provided on the inner wall of the left shell rear end portion at the first hollow hole 251. The camera fixing cover 241b presses the first camera 241 into the reserved bone position 241a and locks it with screws on the rear end portion of the left shell, thereby fixing the first camera 241 to the inner wall of the rear end portion of the left shell and allowing it to shoot to the outside of the shell through the first hollow hole 251.

[0095] Figures 7A and 7B schematically illustrate the structure of the rear end portion of the second housing on the other side of a neck-worn device according to some embodiments of the present disclosure. Figures 7A and 7B illustrate the structure from different angles, respectively. Figures 7A and 7B illustrate the rear end portion of the second housing on the other side and related structures mounted thereon. For greater clarity, the state in which the related structures are mounted before the rear end portion of the second housing is illustrated.

[0096] 7A and 7B , a first hollow hole 251 is provided on the rear end portion 2122 of the second shell. For the convenience of description, the rear end portion 2122 of the second shell is referred to as the right shell rear end portion, which is located on the right side of the user when worn. A reserved bone position 241a for installing the first camera 241 is provided on the inner wall of the rear end portion of the right shell at the first hollow hole 251. The camera fixing cover 241b presses the first camera 241 into the reserved bone position 241a and locks it with screws on the rear end portion of the right shell, thereby fixing the first camera 241 to the inner wall of the rear end portion of the right shell and allowing it to shoot to the outside of the shell through the first hollow hole 251.

[0097] According to some exemplary embodiments, the material of the camera fixing cover 241b includes a metal material, for example, the material of the camera fixing cover 241b may include aluminum, and the side of the first camera 241 that contacts the camera fixing cover 241b is coated with heat-dissipating silicone, so that the first camera 241 can be well cooled.

[0098] According to some exemplary embodiments, referring to FIG. 6A or FIG. 7A , a first protective cover 244 is provided at the first hollow hole 251 . The first protective cover 244 is located on the outer wall of the second shell rear end portion 2122 and covers the first hollow hole 251 for protecting the first camera 241 .

[0099] According to some exemplary embodiments, with reference to FIG6A and FIG6B , first camera 241 may be an infrared camera, and first protective cover 244 may allow infrared and red light to pass through while absorbing green and blue light. First protective cover 244 may filter out interference from other low-wavelength visible light, thereby simplifying the algorithm for obtaining ear position information from captured images. For example, first protective cover 244 may be made of acrylic.

[0100] According to some exemplary embodiments, an infrared fill light may be further provided on the side of the first hollow hole 251 for emitting infrared light when the first camera 241 is shooting, thereby improving the shooting clarity.

[0101] According to some exemplary embodiments, with reference to Figures 6A and 6B , a first recessed portion 247a is provided on the outer wall of the second housing tail portion 2122. The first recessed portion 247a is recessed toward the interior of the housing 21. The bottom of the first recessed portion 247a has a first groove 247b. A first hollow hole 251 is provided at the bottom of the first groove 247b. The shape of the first groove 247b matches the shape of the first protective cover 244. The first protective cover 244 can be secured to the first groove 247b using double-sided tape. An infrared fill light can be provided within the first groove 247b and located to the side of the first hollow hole 251. The first camera 241 arranged at the first hollow hole 251 is used to photograph the user's ear. When the field of view direction required by the first camera 241 does not match the curvature of the area where the first hollow hole 251 is set in the rear end portion 2122 of the second shell, a first recessed portion 247a can be formed in the area where the first hollow hole 251 is required to be set. In this way, the orientation of the first hollow hole 251 can be adjusted so that the orientation of the first hollow hole 251 matches the field of view direction of the first camera 241, that is, the radial direction of the first hollow hole 251 is roughly perpendicular to the main optical axis direction of the first camera 241, thereby effectively avoiding the problem of the first hollow hole 251 blocking the shooting field of view of the first camera 241 without increasing the size of the first hollow hole 251.

[0102] Figure 8 schematically shows an exploded view of a first housing of a neck-worn device according to some embodiments of the present disclosure, wherein Figure 8 schematically shows the structure of the first housing and various components mounted on the first housing.

[0103] According to some exemplary embodiments, in combination with reference to Figures 4 and 8, the neck-worn component includes two audio components 23, the two audio components 23 are respectively located on both sides of the channel 21A along the second direction Y, and the two audio components 23 are roughly symmetrically distributed along the second direction Y. The two audio components 23 are respectively electrically connected to the main board 22 through two audio driver boards 234. The main board 22 transmits the processed audio data playback signal to the audio driver board 234. After receiving the signal, the audio driver board 234 decodes it and outputs it to the audio component 23 to realize sound output.

[0104] For example, the two audio driving boards 234 can be respectively located on one side of the two audio components 23 away from the suspension area 21B, and the audio driving boards 234 can be fixed to the first shell 211 by screws.

[0105] FIG9 schematically illustrates a structural diagram of an audio component of a neck-worn device according to some embodiments of the present disclosure.

[0106] According to some exemplary embodiments, with reference to FIG8 and FIG9 , the audio assembly 23 may include at least two speakers 231. The four corners of the audio assembly 23 are fixed to stepped columns on the inner wall of the first housing 211 via shock-absorbing silicone rubber 233. This prevents resonance and other noise issues caused by a hard connection between the audio assembly 23 and the housing 21. In the audio assembly 23, relatively high-power speakers 231 may be selected.

[0107] According to some exemplary embodiments, with reference to FIG8 and FIG9 , the audio assembly may further include at least one passive membrane 232, which is located between the two speakers 231. The passive membrane 232 has a similar structure to the speaker 231, with a diaphragm that pushes air and a folding ring that allows the diaphragm to return to its normal position. The passive membrane 232 is primarily used to enhance bass. Without increasing the size of the speaker 231, it can enhance the bass effect by increasing the vibration area and lowering the resonant frequency, thereby better meeting the requirements of low-frequency dive.

[0108] According to some exemplary embodiments, referring to FIG4 , the neck-worn device further includes a microphone 26, which is located inside the shell 21 and electrically connected to the mainboard 22. On the one hand, the microphone 26 can be used to identify the user's password to enrich the interaction with the user. On the other hand, when the user makes a sound, the microphone 26 can also be used to identify the user's sound position information, that is, to obtain the orientation of the user's head. The sound position information can be used together with the human ear position information as a basis for optimizing the audio curve, which is conducive to further enhancing the user's auditory experience.

[0109] Figure 10 schematically illustrates the internal structure of a first housing of a neck-worn device according to some embodiments of the present disclosure. Figure 10 schematically illustrates the first housing and related structures mounted on the first housing. For greater clarity, the related structures are shown mounted in front of the first housing.

[0110] According to some exemplary embodiments, in combination with reference to Figures 4 and 10, the neck-worn device includes a plurality of microphones 26, and the plurality of microphones 26 are respectively located on both sides of the channel 21A along the second direction Y. For example, the microphones 26 located on both sides of the channel 21A are roughly symmetrically distributed along the second direction Y, which is conducive to more accurately obtaining the orientation of the user's head based on the sound information respectively obtained by the plurality of microphones 26, and at the same time can simplify the algorithm for obtaining the orientation of the user's head through the sound information obtained by the microphones 26.

[0111] It should be noted that FIG4 only schematically shows the microphone 26 located on one side of the hole 21A (the microphone located on the left side of the user when worn), and the microphone 26 located on one side of the hole 21A can be set in the same way.

[0112] According to some exemplary embodiments, with reference to FIG2 and FIG4 , a plurality of microphones 26 may be provided on one side of the hole 21A along the second direction Y, with at least one microphone 26 being located on the side of the audio component 23 close to the suspension area 21B (i.e., the side closer to the back of the user's head when worn), and at least one microphone 26 being located on the side of the audio component 23 away from the suspension area 21B (i.e., the side closer to the user's face when worn). With such a configuration, the user's voice position information can be more effectively identified. It should be noted that the microphone 26 located on the other side of the hole 21A along the second direction Y is configured in the same manner and will not be described in detail here.

[0113] According to some exemplary embodiments, considering that the user is more likely to be looking straight ahead when wearing the neck-worn device, a larger number of microphones 26 may be provided on the side of the audio component 23 away from the hanging area 21B. For example, one microphone 26 may be provided on the side of the audio component 23 close to the hanging area 21B, and two microphones 26 may be provided on the side of the audio component 23 away from the hanging area 21B.

[0114] 2 , 4 and 6B , among the multiple microphones 26 located on one side of the channel 21A along the second direction Y, the microphone 26 farthest from the suspension area 21B is installed on the rear end portion of the left shell. In order to avoid the problem of sound distortion or noise caused by sound leakage of the microphone 26, the microphone 26 can be assembled in the microphone sealing silicone 261, and then the two can be installed together in the reserved slot 26a on the inner wall of the rear end portion of the left shell. The microphone sealing silicone 261 seals the sound cavity of the microphone 26, thereby avoiding the problem of sound leakage.

[0115] 2 , 4 and 7B , among the multiple microphones 26 located on the other side of the hole 21A along the second direction Y, the microphone 26 farthest from the suspension area 21B is installed on the rear end portion of the right shell. In order to avoid the problem of sound distortion or noise caused by sound leakage of the microphone 26, the microphone 26 can be assembled in the microphone sealing silicone 261, and then the two can be installed together in the reserved slot on the inner wall of the rear end portion of the right shell.

[0116] 4 and 10 , two microphones 26 located on the two audio components 23 and close to the suspension area 21B are arranged on the first shell 211 , and two microphones 26 located on the two audio components 23 and away from the suspension area 21B and adjacent to the two audio components 23 are arranged on the first shell 211 . These four microphones 26 are first assembled in the microphone sealing silicone 261 , and then further installed in the reserved slots on the inner wall of the first shell 211 .

[0117] Figure 11 schematically illustrates a distribution structure diagram of a second camera of a neck-worn device according to some embodiments of the present disclosure. Figure 12 schematically illustrates a combined view diagram of a shooting field of view of a second camera of a neck-worn device according to some embodiments of the present disclosure.

[0118] According to some exemplary embodiments, in combination with reference to Figures 2, 10 and 11, the neck-worn device also includes a plurality of second cameras 242 located in the shell 21. The plurality of second cameras 242 are distributed at intervals along the circumferential direction of the shell 21. The shell 21 includes a plurality of second hollow holes 252. A second hollow hole 252 exposes at least a portion of a second camera 242. The second camera 242 is used to capture images around the neck-worn device through the second hollow hole 252. The second camera 242 is electrically connected to the motherboard 22. The second camera 242 transmits the captured image information data to the motherboard 22. The motherboard 22 converts the captured image information data into graphic data after calculation and outputs it to the user, so that the user can experience a personal God's perspective and can also enhance the user's immersion in the corresponding audio-visual entertainment and games.

[0119] According to some exemplary embodiments, referring to FIG. 11 and FIG. 12 , the fields of view of two adjacent second cameras 242 partially overlap, enabling 360-degree panoramic photography of the area surrounding the neck-worn device using multiple second cameras 242. Furthermore, the images captured in the overlapping areas of the fields of view of adjacent second cameras 242 can be used as a basis for image stitching and depth calculation, resulting in more accurate and realistic images presented to the user.

[0120] According to some exemplary embodiments, the number of the second cameras 242 may be designed based on the horizontal field of view (HFOV) of the second cameras 242. For example, the number of the second cameras 242 may be calculated according to the following formula:

[0121] N = 360° / (HFOV / 2)

[0122] For example, the HFOV of the second camera 242 is 60.2°, so the number of second cameras 242 can be 12. Then, according to the shape of the shell 21, these 12 second cameras 242 are arranged inside the shell 21, thereby realizing 360° panoramic shooting around the neck-worn device.

[0123] According to some exemplary embodiments, referring to FIG. 12 , the overlapping ranges of the shooting fields of adjacent second cameras 242 (i.e., the ranges indicated by the triangles in FIG. 12 ) may be set to be as consistent as possible, which is beneficial to improving the accuracy of image stitching and depth calculation.

[0124] According to some exemplary embodiments, referring to FIG. 2 in conjunction with FIG. 10 and FIG. 11 , for example, the housing 21 may be shaped as a non-closed ring structure having an opening 21C, with the opening 21C and the hanging area 21B respectively located on either side of the hole 21A along the first direction X, so that the user can conveniently wear the neck-worn device. The multiple second cameras 242 include two first sub-cameras 2421 and multiple second sub-cameras 2422. The two first sub-cameras 2421 are arranged adjacent to each other, and the two first sub-cameras 2421 and the hanging area 21B are respectively located on either side of the hole 21A along the first direction X. For example, the housing 21 includes an opening 21C, and the two first sub-cameras 2421 are respectively located on either side of the opening 21C along the second direction Y. The multiple second sub-cameras 2422 are located between the two first sub-cameras 2421, and the multiple second sub-cameras 2422 are arranged in intervals along the circumference of the housing 21. That is, when the user wears the neck-mounted device, the first sub-camera 2421 is used to capture the image in front of the user, and the second sub-camera 2422 is used to capture the image on both sides and behind the user.

[0125] According to some exemplary embodiments, referring to FIG. 11 , the spacing between two adjacent second sub-cameras 2422 is substantially equal to the spacing between two other adjacent second sub-cameras 2422, and the spacing between two adjacent second sub-cameras 2422 is substantially equal to the spacing between the first sub-camera 2421 and the adjacent second sub-camera 2422. That is, among the plurality of second cameras 242, except for the spacing between the two first sub-cameras 2421, the spacing between the other adjacent second cameras 242 can be set to be as consistent as possible. This arrangement facilitates ensuring that, among the plurality of second sub-cameras 2422, the overlapping range of the shooting fields of two adjacent second sub-cameras 2422 is substantially equal to the overlapping range of the shooting fields of another two adjacent second sub-cameras 2422, and the overlapping range of the shooting fields of two adjacent second sub-cameras 2422 is substantially equal to the overlapping range of the shooting fields of the first sub-camera 2421 and the adjacent second sub-camera 2422.

[0126] It should be noted that the distance between two adjacent second cameras 242 can be understood as the distance between two second hollow holes 252 exposing the two second cameras 242, and the distance between two adjacent second hollow holes 252 can be understood as the distance between the center of one first hollow hole 251 and the center of another first hollow hole 251.

[0127] In addition, two intervals being substantially equal may be understood as a deviation of one interval from the other interval being ±10%.

[0128] According to some exemplary embodiments, referring to Figure 12, the main optical axes oa of two adjacent second sub-cameras 2422 intersect, and the main optical axes oa of the first sub-camera 2421 and the second sub-camera 2422 adjacent to the first sub-camera 2421 intersect, that is, according to the orientation of the second camera 242 in the shell, the direction of the main optical axis oa of the second camera 242 is adjusted respectively, and the direction of the main optical axis oa of each second camera 242 roughly points to the center of the channel of the shell, so that the field of view of adjacent second cameras 242 partially overlaps, so that multiple second cameras 242 can achieve 360° panoramic shooting around the neck-worn device.

[0129] According to some exemplary embodiments, referring to FIG. 12 , the angle α between the principal optical axes oa of two adjacent second sub-cameras 2422 is substantially equal to the angle α between the principal optical axes oa of two other adjacent second sub-cameras 2422. The angle α between the principal optical axes oa of two adjacent second sub-cameras 2422 is substantially equal to the angle α between the principal optical axes oa of the first sub-camera 2421 and the adjacent second sub-camera 2422. This configuration advantageously ensures that, among the plurality of second sub-cameras 2422, the overlapping range of the shooting fields of two adjacent second sub-cameras 2422 is substantially equal to the overlapping range of the shooting fields of the other two adjacent second sub-cameras 2422, and the overlapping range of the shooting fields of two adjacent second sub-cameras 2422 is substantially equal to the overlapping range of the shooting fields of the first sub-camera 2421 and the adjacent second sub-camera 2422.

[0130] It should be noted that Figure 12 schematically illustrates the included angle α between the principal optical axes of two cameras, numbered 2 and 3. The included angle α between the principal optical axes of other two adjacent cameras can be derived by reference to this included angle α. The included angle α between the principal optical axes oa of two cameras is substantially equal to the included angle α between the principal optical axes oa of the other two cameras, which should be understood as meaning that the difference between the included angle α between the principal optical axes oa of the two cameras and the included angle α between the principal optical axes oa of the other two cameras is less than or equal to 5°.

[0131] The number of second sub-cameras 2422 is set to be multiple according to actual needs. When "the angle α between the main optical axes oa of two adjacent second sub-cameras 2422 is basically equal to the angle α between the main optical axes oa of the other two adjacent second sub-cameras 2422", at least one of the two adjacent second sub-cameras 2422 is a different second sub-camera 2422 from the other two adjacent second sub-cameras 2422.

[0132] Exemplarily, the included angle of the main optical axes of the second sub-camera 2422 labeled 2 and the second sub-camera 2422 labeled 3 is substantially equal to the included angle of the main optical axes of the second sub-camera 2422 labeled 3 and the second sub-camera 2422 labeled 4, or the included angle of the main optical axes of the second sub-camera 2422 labeled 2 and the second sub-camera 2422 labeled 3 is substantially equal to the included angle of the main optical axes of the second sub-camera 2422 labeled 4 and the second sub-camera 2422 labeled 5.

[0133] According to some exemplary embodiments, with reference to Figures 2 and 12, the directions of the main optical axes oa of the two first sub-cameras 2421 are basically parallel, and the directions of the main optical axes oa of the two first sub-cameras 2421 are roughly parallel to the first direction X, that is, when the user wears the neck-mounted device, the main optical axes oa of the two first sub-cameras 2421 both point directly in front of the user. Such a setting is conducive to improving the accuracy of depth calculation of the captured front image.

[0134] It should be noted that the directions of the main optical axes oa of the two first sub-cameras 2421 are substantially parallel, which should be understood as the angle between the main optical axes oa of the two first sub-cameras 2421 is less than or equal to 5°.

[0135] According to some exemplary embodiments, referring to FIG10 and FIG12 , since the two first sub-cameras 2421 are located on either side of the opening 21C along the second direction Y, the size of the opening 21C along the second direction Y needs to be larger than a certain range so that the user can conveniently wear the neck-worn device. Therefore, the distance between the two first sub-cameras 2421 can be set slightly larger. For example, the distance between the first sub-cameras 2421 is larger than the distance between two adjacent second sub-cameras 2422. It should be noted that the distance between the two first sub-cameras 2421 should not be set too large, and the shooting fields of the two first sub-cameras 2421 must still overlap.

[0136] According to some exemplary embodiments, in combination with FIG5 and FIG11, the two first sub-cameras 2421 are respectively mounted on the two second shell rear end portions 2122, and the two second hollow holes 252 exposing the two first sub-cameras 2421 are respectively located on one side of the two second shell rear end portions 2122 close to the opening 21C.

[0137] 6A and 6B , the rear end portion of the left shell has a second hollow hole 252 for exposing the first sub-camera 2421, and the inner wall of the rear end portion of the left shell at the second hollow hole 252 has a reserved bone position 2421a for installing the first sub-camera 2421. The camera fixing cover 2421b presses the first sub-camera 2421 into the reserved bone position 2421a and locks it with screws at the rear end portion of the left shell, thereby fixing the first sub-camera 2421 to the inner wall of the rear end portion of the left shell and can shoot to the outside of the shell through the second hollow hole 252.

[0138] 7A and 7B , the rear end portion of the right shell has a second hollow hole 252 for exposing the first sub-camera 2421, and the inner wall of the rear end portion of the right shell at the second hollow hole 252 has a reserved bone position for installing the first sub-camera 2421. The camera fixing cover presses the first sub-camera 2421 into the reserved bone position and locks it with the rear end portion of the right shell by screws, thereby fixing the first sub-camera 2421 on the inner wall of the rear end portion of the right shell and can shoot to the outside of the shell 21 through the second hollow hole 252.

[0139] According to some exemplary embodiments, referring to FIG. 6A or FIG. 7A , a second protective cover 245 is provided at the second hollow hole 252. The second protective cover 245 is located on the outer wall of the second housing rear end portion 2122 and covers the second hollow hole 252, thereby protecting the first sub-camera 2421. For example, the material of the protective cover includes glass, so that the second protective cover 245 can have a high transmittance.

[0140] According to some exemplary embodiments, referring to Figure 6A or Figure 7A, a second recessed portion 248a is provided on the outer wall of the rear end portion 2122 of the second shell, and the second recessed portion 248a is recessed toward the interior of the shell 21. The bottom of the recessed second recessed portion 248a has a second groove 248b, and the second hollow hole 252 is provided at the bottom of the second groove 248b. The shape of the second groove 248b matches the shape of the second protective cover plate 245, and the second protective cover plate 245 can be fixed in the second groove 248b by double-sided tape.

[0141] According to some exemplary embodiments, in combination with reference to Figures 5, 6A, 6B, 7A and 7B, a first camera 241 and a first sub-camera 2421 are provided on a second shell tail end portion 2122 (the left shell tail end portion shown in Figure 6A), and a first camera 241 and a first sub-camera 2421 are provided on another second shell tail end portion 2122 (the right shell tail end portion shown in Figure 7A). In a second shell tail end portion 2122, the first camera 241 is located on a side of the first sub-camera 2421 close to the hanging area 21B, that is, the first recessed portion 247a is located on a side of the second recessed portion 248a close to the hanging area 21B, and the first sub-camera 2421 is located at an end of the second shell tail end portion 2122 away from the hanging area 21B.

[0142] According to some exemplary embodiments, with reference to FIG10 and FIG11 , multiple second sub-cameras 2422 are disposed on the first housing 211. The first housing 211 is provided with multiple second hollow holes 252 that expose the multiple second cameras 242. The second hollow holes 252 are disposed on a side of the first housing 211 away from the channel 21A. Each second hollow hole 252 exposes one second sub-camera 2422, allowing the multiple second cameras 242 to capture images to the sides and rear of the user through the multiple second hollow holes 252. The inner wall of the first housing 211 at the second hollow holes 252 has reserved slots for mounting the multiple second sub-cameras 2422. A camera fixing cover 2422b presses the second sub-cameras 2422 into the reserved slots and is screwed to the first housing 211, thereby securing the second sub-cameras 2422 to the inner wall of the first housing 211 and enabling the second sub-cameras 2422 to capture images outside the housing 21 through the second hollow holes 252.

[0143] It should be noted that not all of the second hollow holes 252 are shown in the viewing angle shown in FIG10 , and FIG10 schematically shows a portion of the second hollow holes 252 .

[0144] According to some exemplary embodiments, with reference to FIG5 , FIG10 , and FIG11 , the plurality of second sub-cameras 2422 are arranged approximately symmetrically along the second direction Y. Some of the second sub-cameras 2422 are located on one side of the hole 21A along the second direction Y, while others of the second sub-cameras 2422 are located on the other side of the hole 21A along the second direction Y. The two second sub-cameras 2422 closest to the hanging area 21B may be located on a side of the mainboard 22 away from the hole 21A, while the other second sub-cameras 2422 are located on either side of the two second sub-cameras 2422 away from the hanging area 21B.

[0145] According to some exemplary embodiments, in combination with reference to Figures 1 and 11, the imaging planes of at least two second cameras 242 are basically parallel to the same straight line, so that when the user wears the neck-mounted assembly, the imaging planes of at least two second cameras 242 are basically parallel to the central axis Z of the user's neck, and the imaging planes of at least two second cameras 242 are roughly perpendicular to the horizontal plane.

[0146] It should be noted that the imaging planes of at least two second cameras 242 are substantially parallel to the same straight line. It should be understood that the angles formed by the imaging planes of the two second cameras 242 and the same straight line are both less than or equal to 5°.

[0147] According to some exemplary embodiments, in combination with reference to Figures 1 and 11, the horizontal field of view directions of at least two second cameras 242 are basically perpendicular to the same straight line, so that when the user wears the neck-mounted assembly, the horizontal field of view directions of at least two second cameras 242 are basically perpendicular to the central axis of the user's neck, and the horizontal field of view directions of at least two second cameras 242 are roughly parallel to the horizontal plane.

[0148] It should be noted that the horizontal field of view directions of at least two second cameras 242 are substantially perpendicular to the same straight line. It should be understood that the angles formed by the horizontal field of view directions of the two second cameras 242 and the same straight line are both greater than or equal to 85° and less than or equal to 90°.

[0149] For example, the imaging planes of the multiple second cameras 242 are basically parallel to the same straight line, and the horizontal field of view directions of the multiple second cameras 242 are basically perpendicular to the same straight line. When the user wears the neck-mounted device, the multiple second cameras 242 all shoot forward to the user's surroundings, so that the captured images can be better spliced ​​and the processing procedures for the captured images can be simplified.

[0150] FIG13 schematically illustrates a schematic diagram of the shooting principle of a camera of a neck-mounted device according to some embodiments of the present disclosure.

[0151] 13 , it should be noted that, in the embodiment of the present disclosure, the shooting field of view of the camera refers to the range of scenes that the camera can capture, which can be referred to as the range defined by straight line 1 , straight line 2 , straight line 3 and straight line 4 in FIG13 .

[0152] The horizontal field of view of a camera refers to the direction defined by the horizontal field of view angle of the camera, which can be understood as the extension direction of straight line 5 or straight line 6 in Figure 13.

[0153] The main optical axis oa of the camera is the central axis of the camera's shooting field of view. The main optical axis oa of the camera is perpendicular to the plane defined by straight lines 5, 6, 7 and 8 in Figure 13, and intersects with the center of the plane.

[0154] The imaging plane of the camera refers to the plane on which light forms a clear image after being focused by the lens. An image sensor is placed on this plane, which is responsible for converting the focused light into electrical signals, and then into digital signals for further processing and storage. The imaging plane of the camera is parallel to the plane defined by lines 5, 6, 7, and 8 in Figure 13.

[0155] According to some exemplary embodiments, in combination with reference to Figures 2, 6A and 11, the neck-worn device also includes a third camera 243, which is located in the shell 21 and electrically connected to the main board 22. The shell 21 has a third hollow hole 253, which exposes at least a portion of the third camera 243. The third camera 243 is located on the side of the shell 21 away from the hanging area 21B. The third camera 243 can shoot toward the outside of the shell 21 through the third hollow hole 253. When the user wears the neck-worn assembly, the third camera 243 is configured to shoot toward the front and bottom of the user, so that the user's gesture information can be obtained and sent to the main board 22 to realize the gesture interaction function.

[0156] Figure 14A schematically illustrates a combined view of the third camera's field of view of a neck-worn device according to some embodiments of the present disclosure. Figure 14B schematically illustrates a combined view of the third camera's field of view and the first sub-camera's field of view of a neck-worn device according to some embodiments of the present disclosure.

[0157] According to some exemplary embodiments, in combination with FIG11 and FIG14A, the neck-mounted device includes two third cameras 243, and the two third cameras 243 are roughly symmetrically distributed along the second direction Y. The two third cameras 243 can be used to obtain the user's left-hand gestures and right-hand gestures, respectively.

[0158] According to some exemplary embodiments, with reference to FIG11 and FIG14B , two third cameras 243 are arranged adjacent to two first sub-cameras 2421. In the adjacently arranged third cameras 243 and first sub-cameras 2421, the principal optical axis oa of the third camera 243 forms a preset angle β with the principal optical axis oa of the adjacent first sub-camera 2421, such that when a user wears the neck-worn device, the first sub-cameras 2421 are used to capture images directly in front of the user, while the third cameras 243 are used to capture images in front of and below the user. The preset angle β is less than 90°, and for example, the preset angle β may be 30°, 40°, 50°, 60°, or 70°.

[0159] According to some exemplary embodiments, with reference to Figures 11, 14A and 14B, the directions of the main optical axes oa of the two third cameras 243 are basically parallel, and the plane determined by the main optical axis oa of one third camera 243 and the main optical axis oa of the adjacent first sub-camera 2421 is basically parallel to the plane determined by the main optical axis oa of the other third camera 243 and the main optical axis oa of the adjacent first sub-camera 2421, so that both third cameras 243 shoot toward the front and bottom of the user to achieve gesture interaction. In addition, by setting the direction of the main optical axis oa of the third camera 243 in this way, the overlapping range of the shooting field of view of the third camera 243 and the adjacent first sub-camera 2421 can be as large as possible, which is more conducive to improving the depth calculation accuracy of the picture captured by the first sub-camera 2421.

[0160] It should be understood that the plane determined by the main optical axis oa of a third camera 243 and the main optical axis oa of the adjacent first sub-camera 2421 is basically parallel to the plane determined by the main optical axis oa of another third camera 243 and the main optical axis oa of the adjacent first sub-camera 2421. It should be understood that the angle formed between these two planes is less than or equal to 5°.

[0161] According to some exemplary embodiments, referring to FIG. 11 and FIG. 14B , in the adjacently arranged third camera 243 and first sub-camera 2421, the field of view of the third camera 243 partially overlaps with the field of view of the adjacent first sub-camera 2421. With this arrangement, in addition to providing gesture interaction functionality, the images captured by the third camera 243 can also be used as a basis for depth calculation of the images captured by the first sub-camera 2421, thereby improving the accuracy and authenticity of the front image displayed to the user.

[0162] According to some exemplary embodiments, in combination with reference to Figures 6A, 6B, 7A, 7B and 11, two third cameras 243 are respectively arranged on the two second shell tail end portions 2122, one third camera 243 is arranged on one second shell tail end portion 2122 (the left shell tail end portion shown in Figure 6A), and the other third camera 243 is arranged on the other second shell tail end portion 2122 (the right shell tail end portion shown in Figure 7A).

[0163] 6A and 6B , the rear end portion of the left shell has a third hollow hole 253 for exposing the third camera 243, and the inner wall of the rear end portion of the left shell at the third hollow hole 253 has a reserved bone position 243a for installing the third camera 243. The camera fixing cover 243b presses the third camera 243 into the reserved bone position 243a and locks it with screws at the rear end portion of the left shell, thereby fixing the third camera 243 on the inner wall of the rear end portion of the left shell and can shoot to the outside of the shell through the third hollow hole 253.

[0164] 7A and 7B , the rear end portion of the right shell has a third hollow hole 253 for exposing the third camera 243, and the inner wall of the rear end portion of the right shell at the third hollow hole 253 has a reserved bone position for installing the third camera 243. The camera fixing cover 243b presses the third camera 243 into the reserved bone position and locks it with the rear end portion of the right shell by screws, thereby fixing the third camera 243 on the inner wall of the rear end portion of the right shell and can shoot to the outside of the shell through the third hollow hole 253.

[0165] According to some exemplary embodiments, referring to FIG6A and FIG6B or FIG7A and FIG7B , a third protective cover plate 246 is provided at the third hollow hole 253. The third protective cover plate 246 is located on the outer wall of the second housing rear end portion 2122 and covers the third hollow hole 253, thereby protecting the first sub-camera 2421. For example, the material of the protective cover plate includes glass, so that the third protective cover plate 246 can have a high transmittance.

[0166] According to some exemplary embodiments, referring to Figure 6A or Figure 7A, a third recessed portion 249a is provided on the outer wall of the tail end portion 2122 of the second shell, and the third recessed portion 249a is recessed toward the inner side of the shell 21. The bottom of the recessed third recessed portion 249a has a third groove 249b, and the third hollow hole 253 is provided at the bottom of the third groove 249b. The shape of the third groove 249b matches the shape of the third protective cover plate 246, and the third protective cover plate 246 can be fixed in the third groove 249b by double-sided tape.

[0167] 11 , the motherboard 22 includes a plurality of connectors 221. The plurality of second cameras 242 and the two third cameras 243 may be electrically connected to the plurality of connectors 221 via a plurality of connection trace groups 222. For example, the motherboard 22 may include two first connectors 2211 and two second connectors 2212.

[0168] 5 and 11 , in a third camera 243 and a plurality of second cameras 242 located on the same side of the channel 21A along the second direction Y as the third camera 243, the third camera 243 and at least one second camera 242 are electrically connected to the first connector 2211 via a connecting wiring group 222, and at least two second cameras 242 are electrically connected to the second connector 2212 via another connecting wiring group 222; in another third camera 243 and a plurality of second cameras 242 located on the same side of the channel 21A along the second direction Y as the third camera 243, the third camera 243 and at least one second camera 242 are electrically connected to another first connector 2211 via a connecting wiring group 222, and at least two second cameras 242 are electrically connected to another second connector 2212 via another connecting wiring group 222.

[0169] For example, with reference to Figures 11 and 12, among the multiple cameras located on one side of the second direction Y, the second camera 242 labeled 1, the second camera 242 labeled 3, and the third camera 243 adjacent to the second camera 242 labeled 1 are electrically connected to the first connector 2211 through a connecting wiring group 222, and the second camera 242 labeled 2, the second camera 242 labeled 4, the second camera 242 labeled 5, and the second camera 242 labeled 6 are electrically connected to the second connector 2212 through another connecting wiring group 222. Among the multiple cameras located on the other side of the second direction Y, the second camera 242 labeled 12, the second camera 242 labeled 10, and the third camera 243 adjacent to the second camera 242 labeled 12 are electrically connected to the first connector 2211 through a connecting wiring group 222, and the second camera 242 labeled 11, the second camera 242 labeled 9, the second camera 242 labeled 8, and the second camera 242 labeled 7 are electrically connected to the second connector 2212 through another connecting wiring group 222.

[0170] Figures 15A and 15B schematically illustrate exploded views of a neck pad assembly of a neck-worn device according to some embodiments of the present disclosure, wherein Figures 15A and 15B respectively illustrate exploded views observed from different angles.

[0171] According to some exemplary embodiments, in combination with reference to Figures 2, 5, 15A and 15B, the neck-worn device also includes a neck pad assembly 27, which is arranged in the suspension area 21B of the shell 21, and the neck pad assembly 27 is located on the outer wall of the shell 21 on the side close to the channel 21A. The neck pad assembly 27 is used to provide support for the user's neck when worn, which can improve the user's wearing comfort.

[0172] The neck pad assembly 27 may include a first neck pad frame 271, a second neck pad frame 272, a sponge support body 273, and a neck pad wrapping layer 274. The sponge support body 273 is adhered to the side of the second neck pad frame 272 away from the first neck pad frame 271 via double-sided tape. The neck pad wrapping layer 274 is located on the side of the sponge support body 273 away from the second neck pad frame 272. The neck pad wrapping layer 274 wraps the sponge support body 273 and the second neck pad frame 272 as a whole. The edge of the neck pad wrapping layer 274 is then pressed between the first neck pad frame 271 and the second neck pad frame 272 using the first neck pad frame 271. The first neck pad frame 271 and the second neck pad frame 272 can be fastened together by screws. The neck pad assembly 27 is connected to the side of the suspension area 21B of the shell 21 near the channel 21A. For example, the neck pad assembly 27 can be detachably connected to the shell 21 via magnetic attraction.

[0173] According to some exemplary embodiments, referring to Figures 15A and 15B, multiple hollow structures can be provided on the first neck pad frame 271 and the second neck pad frame 272, so as to reduce the weight of the neck pad assembly, and further reduce the weight of the neck-worn device, thereby improving the wearing comfort of the user.

[0174] Figures 16A and 16B schematically illustrate exploded views of the second housing body of a neck-worn device according to some embodiments of the present disclosure, wherein Figures 16A and 16B respectively illustrate exploded views observed from different angles.

[0175] According to some exemplary embodiments, in combination with reference to Figures 5, 16A and 16B, the second shell main body 2121 includes a second shell skeleton 212a, a second shell wrapping layer 212b and a pressing piece 212c, the second shell wrapping layer 212b wraps the second shell skeleton 212a, the second shell wrapping layer 212b has a square hollow hole 212d, the pressing piece 212c covers the square hollow hole 212d and is locked with the second shell skeleton 212a, the pressing piece 212c can press the edge of the second shell wrapping layer 212b at the square hollow hole 212d and hide it between the second shell skeleton 212a and the pressing piece 212c, thereby increasing the aesthetics of the second shell main body 2121.

[0176] According to some exemplary embodiments, with reference to Figures 5, 15A, 15B, 16A, and 16B, a protruding plug-in 276 is provided on a side of the neck pad assembly 27 close to the second shell body 2121, for example, a side of the first neck pad frame 271 close to the second shell body 2121. A socket 212e is provided on a side of the second shell body 2121 close to the neck pad assembly 27, for example, a socket 212e is provided on the pressing piece 212c. The shape of the socket 212e matches the assembly of the plug-in 276 on the neck pad assembly 27. The socket 212e can serve as an assembly guide. By inserting the plug-in 276 on the neck pad assembly 27 into the socket 212e of the second shell body 2121, the neck pad assembly 27 and the shell 21 are assembled.

[0177] According to some exemplary embodiments, in combination with reference to Figures 15A, 15B, 16A and 16B, the plug-in 276 has a groove structure, and a first magnet 275 is arranged in the groove structure of the plug-in 276, the second shell body 2121 has a groove structure on the side away from the second shell wrapping layer 212b, and a second magnet 212f is arranged in the groove structure of the second shell body 2121, the polarity of the first magnet 275 and the second magnet 212f are different, and the magnetic force generated between the first magnet 275 and the second magnet 212f can firmly adsorb the neck pad assembly 27 on the second shell body 2121.

[0178] According to some exemplary embodiments, referring to FIG. 5 , with the first shell 211 as the base, the second shell body 2121 and the two second shell tail end portions 2122 can be assembled with the first shell 211 by a snap connection. On the basis of the snap connection, the first shell 211 and the second shell body 2121 can also be fastened by screws, so that the first shell 211 and the second shell body 2121 are more firmly connected.

[0179] Figure 17 schematically shows an exploded view of a heat dissipation assembly of a neck-worn device according to some embodiments of the present disclosure. Figure 18 schematically shows a heat dissipation principle diagram of a heat dissipation assembly of a neck-worn device according to some embodiments of the present disclosure.

[0180] According to some exemplary embodiments, in combination with reference to FIG5 and FIG17 , the neck-worn device further includes a heat dissipation assembly 28, which is disposed adjacent to the mainboard 22 and is used to dissipate heat from the mainboard 22, thereby reducing the temperature of the mainboard 22 during operation. The heat dissipation assembly 28 can be located on a side of the mainboard 22 away from the hole 21A, that is, the heat dissipation assembly 28 can be located on a side of the mainboard 22 close to the first housing 211. The heat dissipation assembly 28 includes a heat sink 281 located on the mainboard 22 close to the first housing 211, a thermal grease 282 located between the heat sink 281 and the mainboard 22, a heat dissipation fan 283 located on a side of the heat sink 281 close to the first housing 211, and a fan fixing plate 284 located on a side of the heat dissipation fan 283 close to the first housing 211. The heat dissipation fan 283 is fixed to the first housing 211 via the fan fixing plate 284.

[0181] For example, referring to Figure 8 , the fan fixing plate 284 can be fastened to the first housing 211 using four screws, and the cooling fan 283 can then be fastened to the fan fixing plate 284 using screws. The heat sink 281 and the motherboard 22 are pre-fixed using positioning posts, and then three screws are tightened to secure the heat sink 281 and the motherboard 22. Finally, the entire heat dissipation assembly 28 is secured to the four screw positioning posts in the first housing 211, and the entire heat dissipation assembly 28 is fastened to the housing 21 using four screws. A thermal pad is then attached to the heat-generating charging IC on the motherboard 22, and two pressing sheets 285 are fastened to the heat sink 281 using two screws each, thereby dissipating heat from the heat-generating components on the motherboard 22.

[0182] According to some exemplary embodiments, with reference to FIG5 and FIG17 , the heat dissipation fan 283 includes two fans 2831, and the fan fixing plate 284 has two ventilation holes 2841 corresponding to the two fans 2831. The fan assembly is used to enhance the flow of air within the housing 21, thereby improving the heat dissipation efficiency of the heat dissipation assembly 28. The fan is controlled by PWM (pulse width modulation) with a 4-pin circuit design. The fan speed can be adjusted according to the temperature of the motherboard 22 during use. When the temperature of the motherboard 22 is high, the fan speed can be increased to improve heat dissipation efficiency. When the temperature of the motherboard 22 is low, the fan speed can be reduced to reduce the noise generated by the fan operation.

[0183] According to some exemplary embodiments, in combination with reference to Figures 3, 8, 10, 16A and 17, the cooling fan 283 is configured to discharge air in a direction away from the mainboard 22, and a plurality of air inlet hollow portions 286 are arranged at intervals on the side of the shell 21 close to the channel 21A, and a plurality of air outlet hollow portions 287 are arranged at intervals on the side of the shell 21 away from the channel 21A. For example, the plurality of air outlet hollow portions 287 are arranged on the first shell 211, and the plurality of air inlet hollow portions 286 are arranged on the second shell frame 212a of the second shell main body 2121.

[0184] 3 , 5 , 16A , 17 and 18 , under the joint action of the cooling fan 283 , the air inlet hollow portion 286 on the second shell body 2121 and the air outlet hollow portion 287 on the first shell 211 , air can enter the shell from the air inlet hollow portion 286 on the second shell body 2121 . During the air flow in the shell, the air will pass through the main board 22 and the heat dissipation assembly 28 and take away part of the heat in the main board 22 and the heat dissipation assembly 28 , and then flow out from the air outlet hollow portion 287 on the first shell 211 to the outside of the shell 21 , thereby effectively improving the heat dissipation efficiency of the heat dissipation assembly 28 .

[0185] According to some exemplary embodiments, with reference to Figures 3, 5, 8, and 10, multiple air outlet hollow portions 287 in the first housing 211 are located on a side of the heat dissipation assembly 28 away from the mainboard 22. With reference to Figures 5, 16A, and 16B, a windshield 288 is provided on the side of the housing 21 near the hole 21A. For example, the windshield 288 is located on the second housing frame 212a of the second housing main body 2121. The windshield 288 is located on a side of the mainboard 22 away from the heat dissipation assembly 28. Multiple air inlet hollow portions 286 are provided around the windshield 288. This arrangement allows the airflow direction within the housing 21 to be adjusted, which helps further improve the heat dissipation efficiency of the heat dissipation assembly 28.

[0186] It should be noted that the windshield 288 can be understood as a portion without a hollow structure, so that air does not enter the shell from the windshield 288, but enters the shell from the air inlet hollow portion 286 located around the windshield 288.

[0187] According to some exemplary embodiments, in combination with reference to Figures 5, 16A, 16B and 18, a plurality of air inlet hollow portions 286 are located on one side of the wind shield 288 along the second direction Y and are arranged at intervals in the direction close to the opening 21C. For example, a plurality of air inlet hollow portions 286 are arranged at intervals in the area from the one side of the wind shield 288 along the second direction Y to the edge of the second shell frame 212a close to the second shell tail end portion 2122. That is, as many air inlet hollow portions 286 as possible are arranged. On the one hand, the air flow entering the shell can be increased, and on the other hand, the weight of the shell can be effectively reduced, thereby improving the wearing comfort of the neck-worn device.

[0188] According to some exemplary embodiments, in combination with reference to Figures 5 and 16A, the hollow shape of the air inlet hollow portion 286 includes a long strip. Among the multiple air inlet hollow portions 286 located between the wind shield portion 288 and the opening 21C, the extension direction of the air inlet hollow portion 286 is at an acute angle to the extension direction of the opening 21C to the wind shield portion 288, that is, the extension direction of the air inlet hollow portion 286 is not perpendicular to the extension direction of the opening 21C to the wind shield portion 288. According to this arrangement, the wind resistance of the air when entering the shell from the air inlet hollow portion 286 can be reduced, thereby increasing the air flow entering the shell and improving the heat dissipation efficiency.

[0189] It should be noted that the hollowed-out air inlet portion 286 is in the shape of an elongated strip. The extension direction of the air inlet hollowed-out portion 286 should be understood as the direction of the long side of the air inlet hollowed-out portion 286. FIG16A schematically illustrates the extension direction M of one air inlet hollowed-out portion 286. The extension direction of the opening 21C toward the windshield 288 should be understood as the extension direction from the end of the second housing frame 212a closest to the opening 21C toward the windshield 288. FIG16B schematically illustrates the extension direction N of the opening 21C toward one side of the windshield 288.

[0190] According to some exemplary embodiments, in combination with Figures 5 and 16A, a plurality of air inlet hollow portions 286 located on one side of the wind shield 288 along the second direction and a plurality of air inlet hollow portions 286 located on the other side of the wind shield 288 along the second direction Y are roughly symmetrically distributed on both sides of the channel 21A along the second direction Y.

[0191] According to some exemplary embodiments, referring to FIG16A and FIG16B , the plurality of air inlet hollow portions 286 include a first air inlet portion 286A and a second air inlet portion 286B. The first air inlet portion 286A is located between the second air inlet portion 286B and the wind shield 288. The distribution density of the air inlet hollow portions 286 in the first air inlet portion 286A is less than the distribution density of the air inlet hollow portions 286 in the second air inlet portion 286B. The second housing frame 212a has a greater curvature at the first air inlet portion 286A, so the distribution density of the air inlet hollow portions 286 in the first air inlet portion 286A can be set to be smaller, which helps improve the overall strength of the second housing frame 212a. The second housing frame 212a has a smaller curvature at the second air inlet portion 286B, so the distribution density of the air inlet hollow portions 286 in the second air inlet portion 286B can be set to be larger, which can increase the air flow entering the housing and improve heat dissipation efficiency.

[0192] It should be noted that the distribution density of the air inlet hollow portions 286 should be understood as the number of the air inlet hollow portions 286 per unit area.

[0193] According to some exemplary embodiments, referring to FIG. 16A , a plurality of air inlet hollow portions 286 may also be provided on the upper and lower sides of the wind shield 288 .

[0194] According to some exemplary embodiments, with reference to FIG3 and FIG16A , the size of the air inlet hollow portion 286 is larger than the size of the air outlet hollow portion 287. Since the second housing frame 212a is covered by the second housing wrapping layer 212b, the air inlet hollow portion 286 is obscured by the second housing wrapping layer 212b. Therefore, the size of the air inlet hollow portion 286 can be set slightly larger, which helps increase the air flow into the housing and improve heat dissipation efficiency. The air outlet hollow portion 287 on the first housing 211 is exposed on the outer surface of the neck-worn device. Therefore, the size of the air outlet hollow portion 287 should be set smaller to prevent the internal structure of the housing from being exposed through the air outlet hollow portion. It should be noted that the second housing wrapping layer 212b is made of fabric and does not block air from entering the housing through the air inlet hollow portion 286. The size of the air inlet hollow portion 286 and the size of the air outlet hollow portion 287 can be understood as the hollow area of ​​the air inlet hollow portion 286 and the hollow area of ​​the air outlet hollow portion 287.

[0195] According to some exemplary embodiments, referring to Figure 6B, the neck-worn device also includes a button assembly 31, and the button assembly 31 can be located in the rear end portion 2122 of the second shell on one side. The button assembly 31 includes a button body 311 and a button panel 312. The button body 311 can be melted to the inner side of the rear end portion 2122 of the second shell by a hot melt column. The button panel 312 and the rear end portion 2122 of the second shell can be fixed by two screws, and the button assembly 31 is fixed between the button panel 312 and the rear end portion 2122 of the second shell. Each button on the button assembly 31 is exposed outside the shell through the hollow structure on the rear end portion 2122 of the second shell, and the user can realize the corresponding function by pressing the button.

[0196] According to some exemplary embodiments, referring to Figure 7B, the neck-worn device also includes a touch component 32, which can be located inside the tail end portion 2122 of the second shell on the other side. The touch component 32 can be adhered to the inner side of the tail end portion 2122 of the second shell. The touch component 32 is exposed outside the shell through the hollow structure on the tail end portion 2122 of the second shell. The user can realize the corresponding function by touching the touch component 32.

[0197] According to some exemplary embodiments, referring to Figure 8, the neck-mounted assembly also includes a first circuit board 331 and a second circuit board 332. The first circuit board 331 and the second circuit board 332 can be fixed on the first shell 211 and electrically connected to the main board 22. The first circuit board 331 is used to realize the charging function, and the second circuit board 332 is used to realize the headphone connection function.

[0198] According to some exemplary embodiments, with reference to Figures 1, 8, and 10, the neck-worn device further includes a magnetic terminal 34, which includes a terminal soft silicone 341, a magnetic terminal female seat 342, and a magnetic terminal bracket 343. The terminal soft silicone 341 is adhered to the inner side of the first shell 211 by glue, and the magnetic terminal female seat 342 and the magnetic terminal bracket 343 can be first fixed by screws and then locked to the first shell 211. The neck-worn device may include two magnetic terminals 34, and the two magnetic terminals 34 are respectively located on both sides of the multiple air outlet hollow portions 287. The two magnetic terminals 34 can be electrically connected to the head-worn device 10 through two magnetic signal lines 37 to form a wearable device.

[0199] It should be noted that Figures 1 and 8 only schematically show the structure in which the magnetic signal line 37 is connected to one end of the neck-mounted device 20, and the other end of the magnetic signal line 37 is connected to the head-mounted device 10.

[0200] According to some exemplary embodiments, in combination with FIG5 and FIG8, the neck-worn device further includes a battery assembly 35, the battery assembly 35 includes a first battery 351 and a second battery 352, and the first battery 351 and the second battery 352 are respectively fixed between the two second shell tail end portions 2122 and the first shell 211.

[0201] According to some exemplary embodiments, referring to Figure 8, the neck-worn device also includes a decorative strip for increasing the aesthetics, and the decorative strip is provided with a hollow structure for exposing the second camera, for example, it may include a middle decorative strip 361, a right decorative strip 362 and a left decorative strip 363, and the middle decorative strip 361, the right decorative strip 362 and the left decorative strip 363 are respectively attached to the outside of the first shell 211 by double-sided tape.

[0202] In the wearable devices provided in some exemplary embodiments, a first inertial measurement unit can also be set on the head-mounted device, and the first inertial measurement unit is used to obtain first inertial navigation data of the head-mounted device. The mainboard can combine the first inertial navigation data and the image captured by the first camera to obtain human ear position information.

[0203] FIG19 schematically shows a block diagram of the main structure of a wearable device according to some embodiments of the present disclosure. For example, in some embodiments, a positioning device for a split wearable device is proposed. With reference to FIG1 , FIG4 , FIG9 and FIG19 , the split wearable device includes a head-mounted device 10 and a neck-mounted device 20, and the neck-mounted device 20 is provided with a speaker 231. The positioning device includes: a first inertial measurement unit 101 provided on the head-mounted device 10, for obtaining first inertial navigation data of the head-mounted device 10; an image acquisition unit (such as a first camera 241) provided on the neck-mounted device 20, for obtaining image data of the head-mounted device 10; and a controller 30 (such as a mainboard 22), which obtains the relative positioning of the head-mounted device 10 and the neck-mounted device 20 based on the first inertial navigation data and the image data.

[0204] 19 , the controller 30 may be provided in the head-mounted device 10 or in the neck-mounted device 20. When the controller 30 is provided on the neck-mounted device 20, the weight of the head-mounted device 10 may be reduced, thereby increasing the wearing comfort of the wearer.

[0205] The image acquisition unit (e.g., the first camera 241) is located on the head mounted device 10, and the acquired images are transmitted to the controller 30 via wireless technology or other means. The wireless technology can be selected from Bluetooth technology, wireless serial port, WiFi, or wireless network communication technology that complies with the 5G WiFi communication protocol to ensure data transmission rate and data throughput.

[0206] In some exemplary embodiments, referring to FIG. 19 , communication between the head mounted device 10 and the controller 30 may also be achieved through a connecting wire.

[0207] According to some exemplary embodiments, the first inertial measurement unit may be an IMU (Inertial Measurement Unit), which is a sensor mainly used to detect and measure acceleration and rotational motion. The IMU mainly measures two physical quantities, one is angular velocity, which can be integrated to calculate the angle of rotation of the object, and the other is acceleration, which can be integrated to calculate the running speed and distance of the object. The above two physical quantities can be used to obtain the short-term running trajectory of the object. When in use, the IMU moves as the user's head-turning action drives the movement of the head-mounted device, and collects the translation, rotation and other posture information of the head-mounted device in real time. The first inertial navigation data includes the angular velocity and acceleration data of the head-mounted device. The first inertial navigation data also includes the posture information of the head-mounted device, and the posture information is obtained based on the angular velocity and acceleration data.

[0208] The image acquisition unit may include a camera, and the image data of the head-mounted device includes images captured by a camera lens of the camera. The camera uses the camera lens to capture images of the current viewing angle. The camera lens is mounted on the neck-mounted device and faces the head-mounted device to capture images of the head-mounted device relative to the camera lens.

[0209] The advantage of IMU is that it can provide the relative motion displacement of the head-mounted device. The disadvantage is the error accumulation and drift of IMU. Since IMU is only applicable to posture estimation in a short period of time, the error accumulation caused by drift of IMU makes it difficult for IMU to achieve long-term direction estimation. Therefore, the absolute position information of the head-mounted device is obtained through the image obtained by the first camera to correct the relative displacement of IMU. The correction method can use a method that combines inertial positioning and visual positioning in the existing technology, such as a filter-based method or an optimization / bundle adjustment (BA)-based method to achieve correction, and after correction, the accurate relative motion displacement of the head-mounted device is obtained.

[0210] The camera captures images of the human ear at intervals to obtain the positional relationship of the human ear relative to the camera head. During the interval between two image captures, the IMU is used to obtain the relative position of the head-mounted device. The IMU serves as a supplement to image capture. Between two adjacent photographs, the IMU captures the pose of the head-mounted device to obtain the translation and rotational trajectories of the head-mounted device, thereby achieving the positioning of the head-mounted device during the interval between photographs. Although the IMU has drift, after the above corrections, accurate IMU pose data for the head-mounted device is obtained. In this way, by combining images and the IMU, the relative positioning of the head-mounted device and the neck-mounted device is obtained.

[0211] For example, in an application scenario, the positional relationship of the head-mounted device relative to the camera head is obtained through the image captured by the camera. With the camera head as the origin, the three-dimensional coordinates of the head-mounted device in the camera coordinate system can be obtained. The installation position of the camera on the neck-mounted device is known, and the three-dimensional coordinates of the neck-mounted device in the camera coordinate system can be obtained. The positional relationship between the head-mounted device and the neck-mounted device is obtained through the camera coordinate system to realize the positioning of the head-mounted device and the neck-mounted device on the image.

[0212] In some exemplary embodiments, in combination with Figures 1, 8, 9 and 19, the neck-mounted device may also include: at least two speakers 231, located corresponding to the two ears of the wearer of the head-mounted device 10, wherein the controller 30 obtains the relative positioning of the speakers and the ears based on the relative positioning of the head-mounted device and the neck-mounted device.

[0213] For example, the positions corresponding to the two ears of the head-mounted device wearer are the projection range of the ears on the neck-mounted device when the wearer is looking straight ahead. The head-mounted device is mounted on the wearer's head via the wearer's ears. The position of the wearer's ears relative to the head-mounted device when the wearer is looking straight ahead is known, and the installation position of the speakers on the neck-mounted device is also known. For example, two speakers can be installed, with one speaker corresponding to each ear when the wearer is looking straight ahead. Alternatively, four speakers can be installed, with two speakers corresponding to each ear when the wearer is looking straight ahead. In this way, the relative positioning of the speakers and ears can be determined by the relative positioning of the head-mounted device and the neck-mounted device.

[0214] Those skilled in the art will understand that since the position between the wearer's ear and the head-mounted device is relatively fixed, and the position between the neck-mounted device and the speaker is relatively fixed, after obtaining the relative positioning of the head-mounted device and the neck-mounted device, the relative positioning of the ear and the speaker will naturally be obtained.

[0215] It should be noted that in the application scenario, the positional relationship between the head-mounted device and the neck-mounted device constructed with the camera as the origin can be obtained by obtaining the relative positions of the speaker and the ear through methods such as the three-dimensional coordinate system conversion matrix.

[0216] In the above embodiment, only when an IMU is provided on the head-mounted device, the image acquisition frequency of the first camera needs to be high enough to enable the mainboard to determine the relative positioning of the head-mounted device and the neck-mounted device based on the first inertial navigation data and the image data. For example, the first camera can be a high-frame-rate camera, such as a 60 fps, 90 fps, or higher frame-rate camera.

[0217] The first camera captures images using a visual positioning method. This method utilizes a visual system to capture environmental images during the movement of the mobile device through an imaging device and extracts feature points from each image. The motion of the mobile device is estimated by examining changes in these feature points. The first inertial measurement unit collects first inertial navigation data using inertial positioning. Inertial positioning uses a known initial position to infer the next position and attitude based on continuously measured acceleration and angular velocity of the mobile device, thereby estimating the current attitude of the mobile device in real time. This is a relative positioning method. While visual positioning can achieve high-precision positioning results, its positioning frequency is too low and there is a risk of positioning failure. Inertial elements offer high short-term accuracy and are subject to accuracy constraints. However, due to their high output frequency, the accumulated calculated attitude can introduce corresponding cumulative errors, resulting in "drift."

[0218] Theoretically, if the first camera has an infinitely high frame rate, the relative positioning of the head-mounted device and the neck-mounted device can be completed with only the first camera. However, the actual high frame rate brings high energy consumption, so the first camera cannot achieve an infinitely high frame rate. In this embodiment, the first camera and the single IMU are used in conjunction. The first camera locates the neck-mounted device and the head-mounted device, and the single IMU only locates the head-mounted device. Therefore, the first camera is still required to maintain a high frame rate and a high image acquisition frequency to ensure the relative positioning accuracy of the head-mounted device and the neck-mounted device.

[0219] The disclosed embodiment adopts a vision and inertial fusion method. Since a high-frame-rate first camera is used, the visual positioning result is mainly used. When a visual positioning result appears, the current visual positioning result is output as the positioning result; thereafter, until a new visual positioning result appears, the positioning result is predicted by calculating the posture obtained by the visual positioning result and the inertial element and output as the positioning result; when the next visual positioning result appears, the visual positioning result at the current moment is output as the positioning result.

[0220] According to some exemplary embodiments, referring to Figure 19, a second inertial measurement unit 102 can also be set on the neck-mounted device 20. The second inertial measurement unit 102 is used to obtain second inertial navigation data of the neck-mounted device 20. The controller 30 can combine the first inertial navigation data, the second inertial navigation data and the image captured by the first camera to obtain the human ear position information.

[0221] For example, the second inertial measurement unit is an IMU (Inertial Measurement Unit), which is mainly a sensor used to detect and measure acceleration and rotational motion. When in use, the IMU moves with the movement of the neck-worn device, and collects the position information such as translation and rotation of the neck-worn device in real time. The second inertial navigation data includes the angular velocity and acceleration data of the neck-worn device. The second inertial navigation data also includes the position information of the neck-worn device, and the position information is obtained based on the angular velocity and acceleration data.

[0222] In this embodiment, a first camera and dual IMUs are used in conjunction. The first camera is used to determine the relative position of the neck-worn device and the human ear, one IMU is used to locate the head-worn device, and the other IMU is used to locate the neck-worn device. This configuration can reduce the frequency of image acquisition by the first camera and no longer rely primarily on visual positioning. In the interval between two adjacent image acquisitions, the motion trajectory of the head-worn device during the interval is obtained through the first inertial measurement unit, and the motion trajectory of the neck-worn device during the interval is obtained through the second inertial measurement unit. The drift of the two inertial measurement units is corrected using the image. Ultimately, the position of the human ear relative to the camera is accurately and in real time obtained through the image and the two inertial measurement units, achieving relative positioning between the two. The combination of the first camera and dual IMUs improves the accuracy and real-time performance of positioning, while significantly reducing the energy consumption of the first camera.

[0223] According to some exemplary embodiments, a light source or a reflective light source may be provided on the head-mounted device to locate the head-mounted device when the first camera acquires image data from the head-mounted device. The light source or the reflective light source may be selected based on the aesthetics of the actual product.

[0224] According to some exemplary embodiments, the reflective light source is a retroreflective film. Retroreflective film is a marking patch used for stereo positioning. Highly reflective retroreflective film is used to increase brightness and return incident light back along its original path, making the film very bright, much brighter than the surrounding diffusely reflected light.

[0225] According to some exemplary embodiments, the light source is an LED lamp, or may be other types of light sources.

[0226] According to some exemplary embodiments, the first camera is a monocular camera. When a monocular camera is used, there are at least two corresponding light sources, so as to obtain a stereoscopic image of the head-mounted device.

[0227] According to some exemplary embodiments, the first camera is a binocular camera. Since the binocular camera can recognize depth information, the corresponding light source can be one. When there are multiple light sources, they should be distributed as dispersedly as possible with a certain interval, which is conducive to image recognition and positioning.

[0228] According to some exemplary embodiments, when the light source is a reflective light source, the neck-mounted device further includes an auxiliary light source for illuminating the reflective light source when the first camera is shooting.

[0229] According to some exemplary embodiments, the auxiliary light source is an infrared light source. Infrared light is invisible light, which makes the product more beautiful and can also be used at night.

[0230] According to some exemplary embodiments, the first camera includes a near-infrared filter. For example, the near-infrared filter is attached to the camera head. During daytime use, the near-infrared light source filter selectively retains light in the 850nm or 940nm band, thereby suppressing background light interference and improving image quality. For example, the near-infrared filter can be a long-wave pass filter or a narrow-band filter.

[0231] According to some exemplary embodiments, when the image acquisition unit (e.g., the first camera) is a monocular camera, the infrared light source is arranged next to the monocular camera; when the image acquisition unit (e.g., the first camera) is a binocular camera, the infrared light source is arranged between the binocular cameras.

[0232] For example, the lens FOV of the image acquisition unit (such as the first camera) and the luminous angle of the infrared light source can cover the entire head-mounted device.

[0233] For example, there is no need to install a light source on the head-mounted device, and the camera can capture the characteristic locations of the head-mounted device.

[0234] For example, a non-luminous marker patch is provided on the head-mounted device, and the patch is in a striking color, so that it has a positioning function similar to a luminous light source.

[0235] For example, the head-mounted device includes a body and a connection piece for the wearer's ear, wherein the light source is arranged on the connection piece.

[0236] For example, in one application scenario, the head-mounted device is a head-mounted display (HMD). The main body is a pair of display glasses with optical display lenses, and the connecting member is a temple for mounting the display glasses on the ear. The light source is located on the temple, and the relative position of the ear and the temple is known. Positioning the temple facilitates locating the ear.

[0237] FIG20 schematically shows a main flow chart of a positioning method according to some embodiments of the present disclosure.

[0238] Another embodiment of the present disclosure further provides a positioning method for a wearable device, referring to FIG. 20 , including:

[0239] S10, acquiring first inertial navigation data of the head mounted device through a first inertial measurement unit provided on the head mounted device;

[0240] S20, acquiring image data of the head-mounted device through a first camera provided on the neck-mounted device;

[0241] S30: Obtain the relative positioning of the head-mounted device and the neck-mounted device based on the first inertial navigation data and the image data through the mainboard.

[0242] Figure 21 schematically shows a flow chart of the steps of obtaining the relative positioning of the head-mounted device and the neck-mounted device of the wearable device based on the first inertial navigation data and image data of the wearable device according to some embodiments of the present disclosure.

[0243] According to some exemplary embodiments, in S30, referring to FIG. 21 , obtaining the relative positioning of the head-mounted device and the neck-mounted device based on the first inertial navigation data and the image data includes:

[0244] S301, obtaining absolute position information of the head mounted device according to the image data;

[0245] S302, obtaining relative position information of the head mounted device according to the first inertial navigation data;

[0246] S303: Use the absolute position information to correct the relative position information to obtain the relative positioning of the head-mounted device and the neck-mounted device.

[0247] Next, we use a specific wearable device to describe the process of obtaining the absolute position information of the head-mounted device based on image data.

[0248] The wearable device's head-mounted device is a display pair of glasses, marked with two retroreflective films spaced apart on the temples. The first camera is a monocular camera, and the neck-mounted device is equipped with an infrared light source, positioned near the monocular camera. The retroreflective film is used to retroreflect the incident infrared light.

[0249] The process of obtaining the absolute position information of the head-mounted device based on image data includes:

[0250] (1) an image acquisition device acquires an image;

[0251] (2) Using the threshold segmentation method to segment the inverse film image;

[0252] (3) Determine whether the number of reverse films is sufficient;

[0253] The reflective film may be blocked by human hands. For example, during image acquisition, the wearer may hold the glasses with their hands, resulting in one or more reflective films being blocked. For example, when a monocular camera is used with a reflective film, at least two reflective films must be present when acquiring an image. If there is any blockage, such as only one film being recognized, it is determined that the number of reflective films is insufficient.

[0254] (4) If sufficient, the center of the anti-reflective film is extracted, and the position of the anti-reflective film (such as the temple of the head display device) and the positioning of the first camera are calculated using the PNP algorithm or the neural network.

[0255] If the PNP algorithm is used, the monocular camera needs at least three anti-reflection films, and if the neural network algorithm is used, at least two anti-reflection films are required.

[0256] Taking the PNP algorithm as an example, the primary camera localization mainly involves estimating the primary camera's extrinsic parameters [RT]. This is based on feature point localization. Using markers as feature points, primary camera localization based on feature points is also known as the PNP (Perspective-N-Point) problem, also known as the N-point perspective problem. The PNP problem involves estimating the position and orientation of the observed object relative to the primary camera from N image points under perspective projection, given a calibrated primary camera. In abstract terms, given n markers, the distance between each pair of markers and the angle between the line connecting the marker and its image and the optical center of the primary camera is calculated. Generally speaking, visual localization based on the PNP problem has multiple solutions. However, for any three points in a plane that are not in a straight line, visual localization based on the PNP problem has a unique solution. The PNP problem effectively transforms the object localization problem into a mathematical equation system.

[0257] (5) The position of the head-mounted device is determined based on the location of the marker reverse film (e.g., the temple of the head-mounted device), and the position of the neck-mounted device is determined based on the location of the first camera. (The locations of the temple and the head-mounted device are known, and the location of the first camera on the neck-mounted device is known.) This allows the head-mounted device and the neck-mounted device to be positioned.

[0258] FIG22 schematically shows a main flow chart of a sound playing method according to some embodiments of the present disclosure.

[0259] Based on the above positioning method, an embodiment of the present disclosure further provides a sound playing method for a wearable device, referring to FIG22 , comprising:

[0260] S41, obtaining relative positioning of the head-mounted device and the neck-mounted device according to a positioning method for wearable devices;

[0261] S42, obtaining a relative position of a speaker provided on the neck-mounted device and an ear of a wearer of the head-mounted device based on the relative positions of the head-mounted device and the neck-mounted device;

[0262] S43, obtaining a head-related transfer function corresponding to the speaker according to the relative positioning of the speaker and the ear;

[0263] S44 controls the speaker to produce sound based on the head-related transfer function.

[0264] In one application scenario, a neck-worn device has four speakers. When the wearer looks straight ahead, two speakers are located under each ear, and the speakers are used to play audio. Through relative positioning and an algorithm, the control signal input to the speakers is adjusted. The speakers receive the control signal and adjust the playback of each speaker. The specific process is as follows:

[0265] A HRTF library is pre-established. HRTF stands for head-related transfer function and includes the HRTF of each speaker on the neck-worn device.

[0266] Based on the relative positioning as input information, the far-field HRTF and near-field HRTF are found from the preset HRTF library by table lookup, and the actual sound emitted by each speaker is adjusted to: (positioning distance * far-field HRTF) / near-field HRTF.

[0267] When the wearer puts on the headset, their posture changes, for example, from looking straight ahead to turning their head to look sideways. At this time, the values ​​of the far-field HRTF and near-field HRTF change, and the positioning distance also changes. According to the above algorithm, the actual sound produced by the speaker is adjusted.

[0268] Those skilled in the art will appreciate that the embodiments of the present disclosure are not limited to the above-mentioned speaker control sound emission method.

[0269] For example, to prevent the sounds of the left and right ears from interfering with each other, crosstalk cancellation technology may be added, and the specific implementation method is not limited.

[0270] In some embodiments of the present disclosure, an inertial measurement unit is provided on the head-mounted device or an inertial measurement unit is provided on both the head-mounted device and the neck-mounted device. Combined with a first camera provided on the neck-mounted device, the inertial measurement unit data is used to provide high-speed relative positioning, and the inertial measurement data is corrected using the visual positioning results. This enables real-time, accurate, and efficient positioning of the relative position between the head-mounted device and the neck-mounted device.

[0271] The positioning device provided by some embodiments of the present disclosure can obtain the relative position of the ear and the speaker based on the relative position of the head-mounted device and the ear and the installation position of the speaker on the neck-mounted device.

[0272] The relative positions of the ears and the speakers obtained by the positioning device provided by some embodiments of the present disclosure are used to adjust the sound signals output by each speaker in real time to create a sense of spatial immersion.

[0273] It should be pointed out that although the various steps in the above embodiments are described in a specific order, those skilled in the art will understand that in order to achieve the effects of the present invention, different steps do not have to be performed in such an order. They can be performed simultaneously (in parallel) or in other orders. These changes are within the scope of protection of the present invention.

[0274] It should be understood that although some embodiments of the overall technical concept of the present disclosure have been shown and described, those skilled in the art will understand that changes may be made to these embodiments without departing from the principles and spirit of the overall technical concept, and the scope of the present disclosure is defined by the claims and their equivalents.

Claims

1. A neck-worn device, wherein, The neck-worn device includes: a housing, which is arranged around a passage for providing a wearing space; a main board, located inside the housing; an audio component, located inside the housing; and a first camera, located inside the housing; wherein, the first camera is electrically connected to the audio component through the main board, the housing has a first hollow hole, and at least a part of the first camera is exposed through the first hollow hole, and the first hollow hole is located on a side of the housing close to the passage.

2. The neck-worn device according to claim 1, wherein, The housing includes a suspension area on one side of the passage along a first direction, the neck-worn device includes at least two of the first cameras, and the at least two first cameras are respectively located on both sides of the passage along a second direction, and the second direction is perpendicular to the first direction.

3. The neck-worn device according to claim 2, wherein, The neck-worn device further includes at least two microphones located inside the housing, the at least two microphones are respectively located on both sides of the passage along the second direction, and the microphones are electrically connected to the audio component through the main board.

4. The neck-worn device according to claim 3, wherein, The neck-worn device includes at least two of the audio components, and the two audio components are located on both sides of the passage along the second direction; and in at least one of the audio components, at least one microphone is arranged on a side of the audio component close to the suspension area, and at least one microphone is arranged on a side of the audio component far from the suspension area.

5. The neck-worn device according to claim 4, wherein, In at least one of the audio components, the number of microphones on the side of the audio component close to the suspension area is less than the number of microphones arranged on the side of the audio component far from the suspension area.

6. The neck-worn device according to claim 3, wherein, At least two of the first cameras are symmetrically distributed on both sides of the passage along the second direction; and / or, at least two of the microphones are symmetrically distributed on both sides of the passage along the second direction.

7. The neck-worn device according to any one of claims 1-6, wherein, The housing has a first recessed portion, which recesses towards the inner side of the housing, and the first hollow hole is located inside the first recessed portion.

8. The neck-worn device according to any one of claims 1-7, wherein, The first camera includes an infrared camera, the neck-worn device further includes a filter, the filter covers the first hollow hole, and the filter absorbs green light and blue light and allows red light and infrared light to pass through.

9. The neck-worn device according to any one of claims 1-8, wherein, The neck-worn device further includes a plurality of second cameras located inside the housing, the plurality of second cameras are arranged at intervals along the circumferential direction of the housing, and the shooting fields of adjacent two of the second cameras partially overlap, and the housing includes a plurality of second hollow holes, and at least a part of the plurality of second cameras is exposed through the plurality of second hollow holes.

10. The neck-worn device according to claim 9, wherein, The housing has an opening, and both ends of the housing are located on both sides of the opening along the second direction; and the plurality of second cameras include two first sub-cameras and a plurality of second sub-cameras, the two first sub-cameras are respectively located on both sides of the opening along the second direction, and the plurality of second sub-cameras are located between the two first sub-cameras and are arranged at intervals along the circumferential direction of the housing; Wherein, the distance between two adjacent second sub-cameras is substantially equal to the distance between another two adjacent second sub-cameras, and / or, the distance between two adjacent second sub-cameras is substantially equal to the distance between the first sub-camera and the adjacent second sub-camera.

11. The neck-worn device according to claim 10, wherein, The principal optical axes of two adjacent second sub-cameras intersect, and / or, the principal optical axis of the first sub-camera and the principal optical axis of the adjacent second sub-camera intersect.

12. The neck-worn device according to claim 11, wherein, The angle between the principal optical axes of two adjacent second sub-cameras is substantially equal to the angle between the principal optical axes of another two adjacent second sub-cameras, and / or, the angle between the principal optical axes of two adjacent second sub-cameras is substantially equal to the angle between the principal optical axis of the first sub-camera and the principal optical axis of the adjacent second sub-camera.

13. The neck-worn device according to any one of claims 10-12, wherein, The directions of the principal optical axes of the two first sub-cameras are substantially parallel.

14. The neck-worn device according to any one of claims 10-13, wherein, The second hollow hole exposing the second sub-camera is located on the side of the housing away from the duct; and / or, the second hollow hole exposing the first sub-camera is located on the side of the housing close to the opening.

15. The neck-worn device according to any one of claims 10-14, wherein, The imaging planes of at least two second cameras are substantially parallel to the same straight line, and / or, the horizontal field-of-view directions of at least two second cameras are substantially perpendicular to the same straight line.

16. The neck-worn device according to any one of claims 10-15, wherein, The neck-worn device further includes a third camera, the third camera is located inside the housing and electrically connected to the main board, the housing has a third hollow hole, the third hollow hole exposes at least a part of the third camera, the third camera is arranged adjacent to the first sub-camera, and the principal optical axis of the third camera forms a preset angle with the principal optical axis of the first sub-camera.

17. The neck-worn device according to claim 16, wherein, The neck-worn device further includes two third cameras, the two third cameras are respectively arranged adjacent to the two first sub-cameras, and in the adjacent third camera and the first sub-camera, the field of view of the third camera overlaps with a part of the shooting field of view of the first sub-camera.

18. The neck-worn device according to claim 16 or 17, wherein, The plane determined by the principal optical axis of one third camera and the principal optical axis of the adjacent first sub-camera is substantially parallel to the plane determined by the principal optical axis of the other third camera and the principal optical axis of the adjacent first sub-camera; and / or, The principal optical axis of the third camera forms an acute angle with the principal optical axis of the adjacent first sub-camera.

19. The neck-worn device according to any one of claims 10-18, wherein, The neck-worn device further includes a heat dissipation component, the heat dissipation component is located on the side of the main board away from the duct, the heat dissipation component includes a heat dissipation fan, the heat dissipation fan is configured to blow air in a direction away from the main board, and a plurality of air inlet hollow parts arranged at intervals are provided on the side surface of the housing close to the duct, and a plurality of air outlet hollow parts arranged at intervals are provided on the side surface of the housing away from the duct.

20. The neck-worn device according to claim 19, wherein, The size of the air inlet hollow part is larger than the size of the air outlet hollow part.

21. The neck-worn device according to claim 19 or 20, wherein, The plurality of air outlet hollow parts are located on the side of the heat dissipation component away from the main board, the side surface of the housing close to the duct has a wind shield part, the wind shield part is located on the side of the main board close to the duct, and the plurality of air inlet hollow parts are arranged around the wind shield part.

22. The neck-worn device according to claim 21, wherein, A plurality of the air inlet hollow portions are located on one side of the wind shield portion along the second direction and are arranged at intervals in a direction approaching the opening.

23. The neck-worn device according to claim 22, wherein, The hollow shape of the air inlet hollow portion includes a long strip shape. Among the plurality of air inlet hollow portions located between the wind shield portion and the opening, the extending direction of the air inlet hollow portion forms an acute angle with the extending direction of the opening towards the wind shield portion.

24. The neck-worn device according to claim 22, wherein, The plurality of air inlet hollow portions include a first air inlet portion and a second air inlet portion. The first air inlet portion is located between the second air inlet portion and the wind shield portion, and the distribution density of the air inlet hollow portions in the first air inlet portion is less than the distribution density of the air inlet hollow portions in the second air inlet portion.

25. A neck-worn device, wherein, The neck-worn device includes: A housing that is disposed in a surrounding manner and has a duct located in the middle of the housing; A main board located inside the housing; and A plurality of second cameras located inside the housing, and the second cameras are electrically connected to the main board; Wherein, the plurality of second cameras are distributed at intervals along the circumferential direction of the housing, and the shooting fields of two adjacent second cameras partially overlap. The housing has a plurality of second hollow holes, and the plurality of second hollow holes expose At least a part of the plurality of second cameras.

26. A wearable device, wherein, The wearable device includes the neck-worn device according to any one of claims 1-25.

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