Neckphone

Abstract

The present application relates to a kind of neck hanging sound, including neck hanging main part and acoustic component, the neck hanging main part includes sound shell and connecting shell, the number of the sound shell is two, two the sound shell is connected by the connecting shell, two the sound shell is symmetrically arranged along first symmetry plane left and right, the first symmetry plane is parallel to human body sagittal plane, the first symmetry plane penetrates the longitudinal center line of the connecting shell, the number of the acoustic component is two, two the acoustic component is symmetrically arranged along the first symmetry plane left and right on corresponding the sound shell.The present application adopts multiple units accurate angle sector layout, directional sound suppression leakage, improve privacy;It is constructed that stereo sound field, enhance sound image positioning and surrounding feeling;Extend high-frequency response, optimize full-band listening feeling;Adapt to ergonomics, wear comfortable listening feeling stable, parameter quantization controllable.

Description

Technical Field

[0001] This invention relates to the field of neck-worn speaker technology, and in particular to a neck-worn speaker. Background Technology

[0002] Neck-mounted speakers (also known as neck-mounted speakers or neck-mounted loudspeakers) are a new type of portable audio device. With the advantages of not needing to be inserted into the ear and freeing up both ears, while taking into account both personal audio experience and certain external playback needs, they are widely used in various scenarios such as personal daily audio playback, office meeting amplification, outdoor fitness, and commuting. They have become a popular product in the portable audio field in recent years.

[0003] Currently, mainstream neck-hook speakers on the market have significant technical limitations in speaker layout design, lacking a scientifically sound and reasonable multi-unit angle collaborative design. For example, Chinese patent CN218352647U discloses a neck-hook speaker, comprising a neck-hook and a speaker body, with the speaker housed inside the speaker housing and the sound outlet connected to the sound channel; its speaker is a single full-range unit with its axis perpendicular to the neck-hook arm and facing outwards, without any angle offset or multi-unit collaborative structure. In actual use, the following problems exist: 1. Severe sound field dispersion and leakage: The unit outputs directly without directional constraint, causing sound to diffuse in all directions. Sound pressure attenuation is only 15%-20% at 30cm, easily disturbing others and compromising privacy; 2. Blurred stereo positioning: The left and right units are parallel and symmetrical, with no angular difference, resulting in insignificant time and intensity differences between the two ears, a sound field width <15cm, and loose imaging; 3. Rapid high-frequency attenuation: The high-frequency response of a single full-range unit is limited (usually <12kHz), and there is no angular compensation, causing rapid scattering of high-frequency energy and loss of vocal detail.

[0004] For example, Chinese patent CN112203187B discloses a neckband speaker with two units on each side, arranged vertically along the neckband arm, with the axis pointing inward (towards the ear). It lacks precise angle parameters and crossover design. Actual defects include: 1. Poor directivity matching: The units only face inward without tilt / horizontal angle constraints, which does not match the physiological angle of the human ear canal (30°-45° horizontal, 10°-20° tilt), resulting in ineffective high-frequency input to the ear canal and low listening efficiency; 2. Severe unit interference: Multiple units on the same side are laid flat without angular difference, causing sound waves to superimpose and cancel each other out in the near field, resulting in a mid-frequency (1–3kHz) distortion rate >8% and a muddy soundstage; 3. Lack of dedicated high-frequency design: The unit size is uniform (mostly 20-30mm), high-frequency units are missing, and the high-frequency roll-off occurs before 10kHz, resulting in insufficient detail.

[0005] As consumers increasingly demand higher levels of auditory experience and privacy from portable audio devices, the existing speaker layout design of neck-worn speakers can no longer meet market needs. There is an urgent need for a neck-worn speaker with a multi-unit angle layout that precisely matches the physiological structure of the human body. Summary of the Invention

[0006] Therefore, it is necessary to provide a new type of neck-mounted speaker to address the problems of sound field dispersion, severe sound leakage, poor stereo positioning, insufficient and rapid high-frequency decay, and lack of clear angular constraints in the unit layout of existing neck-mounted speakers.

[0007] A neck-mounted speaker includes a neck-mounted body (10) and acoustic components. The neck-mounted body (10) includes a speaker housing (11) and a connecting housing (12). There are two speaker housings (11), which are connected by the connecting housing (12). The two speaker housings (11) are symmetrically arranged on the left and right sides along a first symmetry plane (S1). The first symmetry plane (S1) is parallel to the sagittal plane of the human body and passes through the longitudinal midline (Z) of the connecting housing (12). There are two acoustic components, which are symmetrically arranged on the corresponding speaker housings (11) on the left and right sides along the first symmetry plane (S1).

[0008] In one embodiment, the speaker housing (11) forms a first projection (TY1) on the first symmetry plane (S1), and the connecting housing (12) forms a second projection (TY2) on the first symmetry plane (S1). The side of the first projection (TY1) away from the ear and the side of the second projection (TY2) away from the ear have a first common tangent (L1). The first common tangent (L1) is tangent to the first projection (TY1) at a first tangent point (D1), and the first common tangent (L1) is tangent to the second projection (TY2) at a second tangent point (D2). The line connecting the first tangent point (D1) and the second tangent point (D2) is designated as a reference line (L2). The contour line of the first projection (TY1) near the reference line (L2) is designated as a first inner contour line (L3). The point of the first inner contour line (L3) farthest from the reference line (L2) is designated as a first feature point (D3). The distance between the first feature point (D3) and the reference line (L2) is 14-22 mm.

[0009] In one embodiment, a reference horizontal plane (S2) is formed by passing through the reference line L2 perpendicular to the sagittal plane. The speaker housing (11) projects onto the reference horizontal plane (S2) to form a third projection (TY3), and the connecting housing (12) projects onto the reference horizontal plane (S2) to form a fourth projection (TY4). The inner vertex of the fourth projection (TY4) is designated as a second feature point (D4), and the front arc end point of the third projection (TY3) is designated as a third feature point (D5). The intersection of the longitudinal centerline (Z) and the inner contour of the fourth projection (TY4) is designated as a center feature point (D6). The inner curve of the neckband body (10) smoothly connects the center feature point (D6), the second feature point (D4), and the third feature point (D5) to form a second inner contour line (L4) that conforms to the curve of the human neck. The point furthest between the second inner contour line (L4) and the longitudinal centerline (Z) is designated as a fourth feature point (D7). The distance between the fourth feature point (D7) and the longitudinal centerline (Z) is 55-75mm.

[0010] In one embodiment, the speaker housing (10) is provided with a sound outlet (111) facing away from the reference line (L2), the axial direction of the sound outlet (111) is biased towards the first symmetry plane (S1), and the angle between the sound outlet (111) and the horizontal plane (S2) of the reference line is 83°-87°.

[0011] In one embodiment, the acoustic component includes a full-range speaker (SP1) and four tweeters. The full-range speaker (SP1) is used to reproduce low-to-mid-frequency audio signals to ensure the basic listening experience and atmosphere of the audio. The tweeters are used to reproduce high-frequency audio signals to supplement high-frequency details. The four tweeters and the full-range speaker (SP1) are arranged in a fan shape on the speaker housing (11). The four tweeters are arranged sequentially from the connecting housing (12) toward the speaker housing (11) and are divided into a first tweeter (T1), a second tweeter (T2), a third tweeter (T3), and a fourth tweeter (T4).

[0012] In one embodiment, the angle between the acoustic axis of the full-range speaker (SP1) and the sagittal plane containing the reference line (L2) is... The angle between the acoustic axis of the full-range speaker (SP1) and the horizontal plane (S2) of the reference connection is 100°. It is 87°.

[0013] In one embodiment, the speaker housing (11) has an independent rear cavity (112) on the side opposite to the sound output of the full-range speaker (SP1). The acoustic net volume of the independent rear cavity (112) is determined according to the specification volume of the full-range speaker (SP1), and the specific core calculation formula is as follows:

[0014] Among them, V b V is the net acoustic volume of the rear cavity; as Q is the equivalent volume of the loudspeaker; ts Q is the overall quality factor of the loudspeaker. tc Let Q be the target system Q value.

[0015] In one embodiment, the angle between the acoustic axis of the first tweeter (T1) and the sagittal plane containing the reference line (L2) is... The angle between the acoustic axis of the first tweeter T1 and the horizontal plane (S2) of the reference line is 53°. It is 85°.

[0016] In one embodiment, the angle between the second tweeter (T2) and the reference line (L2) in the sagittal plane is... The angle between the acoustic axis of the second tweeter (T2) and the horizontal plane (S2) of the reference line is 58°. It is 82°.

[0017] In one embodiment, the angle between the third tweeter (T3) and the sagittal plane containing the reference line (L2) is... The angle between the acoustic axis of the third tweeter (T3) and the horizontal plane (S2) of the reference line is 73°. It is 84°.

[0018] In one embodiment, the angle between the fourth tweeter (T4) and the sagittal plane containing the reference line (L2) is... The angle between the acoustic axis of the fourth tweeter (T4) and the horizontal plane (S2) of the reference line is 53°. It is 87°.

[0019] The beneficial effects of this invention are as follows: It adopts an arc-shaped neckband main structure with ergonomic parameters quantified, and is equipped with a fan-shaped crossover layout of one full-range speaker and four tweeters with strict left and right symmetry. The horizontal and vertical tilt angles of each unit are precisely set with reference connection as a unified benchmark, so that the sound axes of all units converge inward and point towards the wearer's ear canal. This can effectively improve the sound energy transmission efficiency, and, together with the natural sound shielding effect of the human neck and shoulders, significantly suppress the surrounding sound leakage and improve the privacy of use. It can also build a stereo sound field with horizontal width and vertical depth, enhance the sound image positioning accuracy and spatial immersion. At the same time, the crossover collaborative architecture can optimize the frequency response performance of the entire frequency band, extend the upper limit of high frequency response and improve the listening stability in dynamic wearing scenarios. Combined with the quantitative constraints of the neck feature size, it ensures wearing comfort and the consistency of listening experience for users of different body types. Moreover, all parameters of the solution are detectable and reproducible, which facilitates mass production assembly and quality control. Attached Figure Description

[0020] Figure 1 This is an assembly structure diagram of the neck-mounted speaker of the present invention; Figure 2 This is a schematic diagram of the neck-mounted speaker of the present invention projected onto the first projection plane. Figure 3 This is a schematic diagram of the neck-mounted speaker of the present invention projected onto the second projection plane; Figure 4 This is an exploded view of the neck-mounted speaker of the present invention; Figure 5 This is an assembly structure diagram of the full-range speaker and tweeter in the neck-mounted speaker of the present invention.

[0021] The meanings of the numbers in the attached diagram are as follows: 100-Neck-mounted speaker; 10-Neckband body, 11-Speaker housing, 111-Sound outlet, 112-Independent rear cavity, 113-Sound mesh, 12-Connecting housing; SP1 - Full-range speaker, T1 - First tweeter, T2 - Second tweeter, T3 - Third tweeter, T4 - Fourth tweeter; S1 - First symmetry plane, S2 - Horizontal plane of reference line, Z - Longitudinal centerline, TY1 - First projection, TY2 - Second projection, TY3 - Third projection, TY4 - Fourth projection, L1 - First common tangent, L2 - Reference line, L3 - First inner contour line, L4 - Second inner contour line, D1 - First tangent point, D2 - Second tangent point, D3 - First feature point, D4 - Second feature point, D5 - Third feature point, D6 - Central feature point, D7 - Fourth feature point. Detailed Implementation

[0022] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0023] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0025] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0026] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0027] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0028] In medicine, anatomy, and other fields, the human body can be defined by three basic planes: the sagittal plane, the coronal plane, and the horizontal plane; and three basic axes: the sagittal axis, the coronal axis, and the vertical axis. The sagittal plane is a section perpendicular to the ground along the anteroposterior direction of the body, dividing the body into left and right parts. The coronal plane is a section perpendicular to the ground along the left-right direction of the body, dividing the body into anterior and posterior parts. The horizontal plane is a section parallel to the ground along the vertical direction of the body, dividing the body into superior and inferior parts. Correspondingly, the sagittal axis is the axis along the anteroposterior direction of the body and perpendicular to the coronal plane; the coronal axis is the axis along the left-right direction of the body and perpendicular to the sagittal plane; and the vertical axis is the axis along the vertical direction of the body and perpendicular to the horizontal plane. Furthermore, in the wearing state, the reference connecting line plane described in this invention forms an angle with the human body's horizontal plane. Of course, considering individual differences among different users, the angle between the reference connecting line plane and the human body's horizontal plane can be between 30° and 45°. Therefore, in this invention, when the neckband body described "in the wearing state" is worn on the human body, the angle between the reference connecting line plane and the human body's horizontal plane is 36°, and the speaker angle design described in this invention is based on this human ear reference position.

[0029] Please see Figure 1 The neck-mounted speaker 100 according to one embodiment of the present invention includes a neck-mounted body 10 and acoustic components. The number of acoustic components is two, and both acoustic components are disposed on the neck-mounted body 10.

[0030] Please see Figure 1The neckband body 10 adopts an ergonomic arc design to fit the curve of the human neck. The neckband body 10 includes a speaker housing 11 and a connecting housing 12. There are two speaker housings 11, which are symmetrically arranged along the sagittal plane of the human body and distributed below the user's left and right ears, respectively. The connecting housing 12 is used to connect the two speaker housings 11 and is set at the back of the user's neck and fits against the back of the user's neck.

[0031] Please see Figure 1 The speaker housing 11 has a receiving cavity, and the acoustic component is disposed within the receiving cavity. The acoustic component is a module capable of converting electrical signals into sound signals, such as a loudspeaker. In some embodiments, the number of loudspeakers in the acoustic component can be one, two, or more. In other embodiments, the receiving cavity can accommodate a battery and electrical devices. In still other embodiments, the connecting housing 12 can serve as another receiving cavity for installing electrical devices such as batteries and PCBAs, thereby shortening the overall length of the neckband body 10.

[0032] Please see Figure 1 In this embodiment, the two acoustic components are arranged strictly symmetrically along the longitudinal center line Z of the neckband body 10. The longitudinal center line Z of the neckband body 10 passes through the midpoint of the connecting shell 12 and is parallel to the sagittal plane of the wearer's body. In some embodiments, the sagittal plane may coincide with the longitudinal center line of the neckband body 10, that is, the sagittal plane may serve as the first symmetry plane S1 of the neckband body 10. The first symmetry plane S1 is a virtual geometric plane that passes through the neckband body 10 and divides the neckband body 10 into two parts located on opposite sides of the plane, which are mirror images of each other in shape and structure.

[0033] Please see Figure 2In this embodiment, the speaker housing 11 forms a first projection TY1 on the first symmetry plane S1, and the connecting housing 12 projects onto the first symmetry plane S1 to form a second projection TY2. The side of the first projection TY1 opposite to the sound outlet 111 and the side of the second projection TY2 opposite to the sound outlet 111 share a first common tangent line L1. The first common tangent line L1 is tangent to the first projection TY1 at a first tangent point D1, and the first common tangent line L1 is tangent to the second projection TY2 at a second tangent point D2. The line connecting the first tangent point D1 and the second tangent point D2 is designated as a reference line L2. Using the reference line L2 as a reference direction, the speaker housing 11, the acoustic components, and the connecting housing 12 are all arranged on the same side of this direction. The contour line of the first projection TY1 closest to the reference line L2 is designated as a first inner contour line L3. The point of the first inner contour line L3 furthest from the reference line L2 is designated as a first feature point D3, and the distance between the first feature point D3 and the reference line L2 is 18 mm. In other embodiments, the distance between the first feature point D3 and the reference line L2 is between 14mm and 22mm. If the distance between the first feature point D3 and the reference line L2 is too small, it may cause the speaker housing 11 to press against the user's collarbone, causing discomfort to the user; if the distance between the first feature point D3 and the reference line L2 is too large, the neckband body 10 will not fit snugly against the bottom of the user's neck, and it is easy to slip when worn.

[0034] Please see Figure 3In this embodiment, a horizontal reference plane S2 is formed by passing through the reference line L2 perpendicular to the sagittal plane. The speaker housing 11 projects onto the horizontal reference plane S2 to form a third projection TY3, and the connecting housing 12 projects onto the horizontal reference plane S2 to form a fourth projection TY4. The inner vertex of the fourth projection TY4 is designated as the second feature point D4, the front arc end of the third projection TY3 is designated as the third feature point D5, and the intersection of the longitudinal centerline Z of the neckband body 10 and the inner contour of the fourth projection TY4 is designated as the center feature point D6. The inner curve of the neckband body 10 smoothly connects the center feature point D6, the second feature point D4, and the third feature point D5 to form a second inner contour line L4 that conforms to the curve of the human neck. The point furthest from the second inner contour line L4 to the longitudinal centerline Z of the neckband body 10 is designated as the fourth feature point D7, and the distance between the fourth feature point D7 and the longitudinal centerline Z of the neckband body 10 is 65mm. In other embodiments, the distance between the fourth feature point D7 and the longitudinal center line Z of the neckband body 10 is 55mm-75mm. If the distance between the second inner contour line L4 and the longitudinal center line Z of the neckband body 10 is too small, it may cause interference between the left speaker housing 11, the right speaker housing 11, or the connecting housing 12 and the user's neck; if the distance between the second inner contour line L4 and the longitudinal center line Z of the neckband body 10 is too small, it may cause the neckband body 10 to be too loose when worn by the user.

[0035] Please see Figure 4 In this embodiment, a sound-emitting mesh 113 is installed on the speaker housing 11, the sound-emitting mesh 113 is sealed within the accommodating cavity, and the sound-emitting mesh 113 is provided with a sound-emitting hole 111, the sound-emitting hole 111 facing away from the reference connection line L2. The connection method between the sound-emitting mesh 113 and the speaker housing 11 is one of ultrasonic connection, adhesive bonding, or snap-fit ​​connection. In other embodiments, the sound-emitting hole 111 can be directly provided on the speaker housing 11. The sound outlet 111 is axially offset towards the first symmetry plane S1, and the angle between the sound outlet 111 and the horizontal plane S2 of the reference connection is 83°–87°. This allows the sound outlet direction to be precisely aligned with the wearer's ear canal entrance, effectively improving sound energy transmission efficiency and in-ear sound pressure level, and reducing power consumption. Simultaneously, it enhances high-frequency focusing, extends the upper limit of high-frequency response, and improves sound detail reproduction. This angle concentrates sound energy in a small area around the ear, and combined with the sound shielding effect of the neck and shoulders, it can significantly suppress multi-directional sound leakage and improve user privacy. Furthermore, this angle is highly matched with the pitch angle of the internal speaker unit, reducing frequency response distortion caused by sound wave diffraction and cavity standing waves. The reserved angle tolerance can accommodate micro-movements during wear, ensuring auditory stability and timbre fidelity in dynamic scenarios. In this embodiment, the angle between the sound outlet 111 and the horizontal plane S2 of the reference connection is 85°.

[0036] Please see Figure 4 and Figure 5 Taking the acoustic component located to the left of the longitudinal center line Z of the neckband body 10 as an example, the acoustic component includes a full-range speaker SP1 and four tweeters. The full-range speaker SP1 is used to reproduce mid-low frequency audio signals, ensuring the basic listening experience and atmosphere of the audio; the tweeters are used to reproduce high frequency audio signals, supplementing high frequency details. The four tweeters and the full-range speaker SP1 work together, arranged in a fan shape inside the speaker housing 11. This ensures the fullness and atmosphere of the mid-low frequency listening experience through the full-range speaker SP1, and fills the high frequency directional blind spot with the multi-angle fan-shaped coverage of multiple tweeters, extending the upper limit of the high frequency response and reducing the listening fluctuation caused by wearing micro-movements. The sound axes of all the speakers converge towards the ear canal opening area, which can effectively improve the sound energy transmission efficiency, enhance stereo imaging and spatial immersion, while reducing the outward diffusion of sound energy, suppressing peripheral sound leakage, and improving the privacy of use.

[0037] Please see Figure 4 and Figure 5 In this embodiment, the four tweeters are arranged sequentially from the connecting housing 12 toward the speaker housing 11, and are divided into the first speaker housing 11 having an independent rear cavity 112 on the side away from the sound output of the full-range speaker SP1, tweeter T1, second tweeter T2, third tweeter T3 and fourth tweeter T4.

[0038] Please see Figure 4 and Figure 5 In this embodiment, the full-range speaker SP1 is disposed in the middle of the accommodating cavity, and the angle between the acoustic axis of the full-range speaker SP1 and the sagittal plane containing the reference connection line L2 is... The angle is 100°. The acoustic axis of the full-range speaker SP1 is biased towards the longitudinal center line Z side of the neckband body 10. The angle between the acoustic axis of the full-range speaker SP1 and the horizontal plane S2 of the reference connection line is... It is 87°.

[0039] Please see Figure 5 The speaker housing 11 has an independent rear cavity 112 on the side opposite to the sound output of the full-range speaker SP1 to ensure the bass effect of the full-range speaker SP1. The acoustic net volume of the independent rear cavity 112 is determined based on the specification volume of the full-range speaker SP1, and the specific core calculation formula is as follows: V b Rear cavity acoustic net volume (unit: L); V as Q: Equivalent volume of full-range speaker SP1 (unit: L); tsQ: Total quality factor of the SP1 full-range speaker; tc : The Q value of the target system.

[0040] Please see Figure 5 In this embodiment, the first tweeter T1 is disposed on the side of the full-range speaker SP1 near the connecting housing 12. The first tweeter T1 is disposed within the accommodating cavity. The angle between the acoustic axis of the first tweeter T1 and the sagittal plane containing the reference connection line L2 is... The angle is 53°. The acoustic axis of the first tweeter T1 is biased towards the longitudinal center line Z side of the neckband body 10. The angle between the acoustic axis of the first tweeter T1 and the horizontal plane S2 of the reference line is... It is 85°.

[0041] Please see Figure 5 In this embodiment, the second tweeter T2 is disposed on the side of the first tweeter T1 near the connecting housing 12, and the second tweeter T2 is disposed within the receiving cavity. The angle between the second tweeter T2 and the reference connection line L2 in the sagittal plane is... The angle is 58°. The acoustic axis of the second tweeter T2 is biased towards the longitudinal center line Z side of the neckband body 10. The angle between the acoustic axis of the second tweeter T2 and the horizontal plane S2 of the reference line is... It is 82°.

[0042] Please see Figure 5 In this embodiment, the third tweeter T3 is disposed on the side of the second tweeter T2 near the connecting housing 12. The third tweeter T3 is disposed within the receiving cavity. The angle between the third tweeter T3 and the sagittal plane containing the reference connection line L2 is... The angle is 73°. The acoustic axis of the third tweeter T3 is biased towards the longitudinal center line Z side of the neck-hanging body 10. The angle between the acoustic axis of the third tweeter T3 and the horizontal plane S2 of the reference line is... It is 84°.

[0043] Please see Figure 5 In this embodiment, the fourth tweeter T4 is disposed on the side of the third tweeter T3 near the connecting housing 12, and the fourth tweeter T4 is disposed within the receiving cavity. The angle between the fourth tweeter T4 and the sagittal plane containing the reference connection line L2 is... The angle is 53°. The acoustic axis of the fourth tweeter T4 is biased towards the longitudinal center line Z side of the neck-mounted body 10. The angle between the acoustic axis of the fourth tweeter T4 and the horizontal plane S2 of the reference line is... It is 87°.

[0044] Please see Figure 5In this embodiment, the full-range speaker SP1, the first tweeter T1, the second tweeter T2, the third tweeter T3, and the fourth tweeter T4 are arranged along the second inner contour line L4, which is set along the human head. That is, the acoustic axes of the full-range speaker SP1, the first tweeter T1, the second tweeter T2, the third tweeter T3, and the fourth tweeter T4 are all facing the human ear, ensuring the directivity of each speaker and thus ensuring a good listening experience.

[0045] It should be noted that, since the two acoustic components are arranged strictly symmetrically along the longitudinal center line Z of the neckband body 10, the acoustic component located to the right of the longitudinal center line Z of the neckband body 10 is symmetrically arranged in position and angle to the acoustic component located to the left of the longitudinal center line Z of the neckband body 10.

[0046] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0047] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A neck-mounted speaker, characterized in that, The device includes a neckband body (10) and acoustic components. The neckband body (10) includes a speaker housing (11) and a connecting housing (12). There are two speaker housings (11), which are connected by the connecting housing (12). The two speaker housings (11) are symmetrically arranged on the left and right sides along a first symmetry plane (S1). The first symmetry plane (S1) is parallel to the sagittal plane of the human body and passes through the longitudinal midline (Z) of the connecting housing (12). There are two acoustic components, which are symmetrically arranged on the corresponding speaker housings (11) on the left and right sides along the first symmetry plane (S1).

2. The neck-mounted speaker according to claim 1, characterized in that, The speaker housing (11) forms a first projection (TY1) on the first symmetry plane (S1), and the connecting housing (12) forms a second projection (TY2) on the first symmetry plane (S1). The side of the first projection (TY1) away from the ear and the side of the second projection (TY2) away from the ear have a first common tangent (L1). The first common tangent (L1) is tangent to the first projection (TY1) at a first tangent point (D1), and the first common tangent (L1) is tangent to the second projection (TY2) at a second tangent point (D2). The line connecting the first tangent point (D1) and the second tangent point (D2) is designated as a reference line (L2). The contour line of the first projection (TY1) near the reference line (L2) is designated as a first inner contour line (L3). The point of the first inner contour line (L3) farthest from the reference line (L2) is designated as a first feature point (D3). The distance between the first feature point (D3) and the reference line (L2) is 14-22 mm.

3. The neck-mounted speaker according to claim 2, characterized in that, The reference line horizontal plane (S2) is formed by passing through the reference line L2 perpendicular to the sagittal plane. The speaker housing (11) is projected onto the reference line horizontal plane (S2) to form a third projection (TY3). The connecting housing (12) is projected onto the reference line horizontal plane (S2) to form a fourth projection (TY4). The inner vertex of the fourth projection (TY4) is set as the second feature point (D4). The front arc end point of the third projection (TY3) is set as the third feature point (D5). The intersection of the longitudinal center line (Z) and the inner contour of the fourth projection (TY4) is set as the center feature point (D6). The inner curve of the neck hanger body (10) smoothly connects the center feature point (D6), the second feature point (D4) and the third feature point (D5) to form a second inner contour line (L4) that conforms to the curve of the human neck. The point farthest between the second inner contour line (L4) and the longitudinal center line (Z) is set as the fourth feature point (D7). The distance between the fourth feature point (D7) and the longitudinal center line (Z) is 55-75mm.

4. The neck-mounted speaker according to claim 3, characterized in that, The acoustic components include a full-range speaker (SP1) and four tweeters. The full-range speaker (SP1) is used to reproduce low-to-mid-frequency audio signals to ensure the basic listening experience and atmosphere of the audio. The tweeters are used to reproduce high-frequency audio signals to supplement high-frequency details. The four tweeters and the full-range speaker (SP1) are arranged in a fan shape on the speaker housing (11). The four tweeters are arranged sequentially from the connecting housing (12) toward the speaker housing (11) and are divided into a first tweeter (T1), a second tweeter (T2), a third tweeter (T3), and a fourth tweeter (T4).

5. The neck-mounted speaker according to claim 4, characterized in that, The angle between the acoustic axis of the full-range speaker (SP1) and the sagittal plane containing the reference line (L2). The angle between the acoustic axis of the full-range speaker (SP1) and the horizontal plane (S2) of the reference connection is 100°. It is 87°.

6. The neck-mounted speaker according to claim 5, characterized in that, The speaker housing (11) has an independent rear cavity (112) on the side opposite to the sound output of the full-range speaker (SP1). The acoustic net volume of the independent rear cavity (112) is determined according to the specification volume of the full-range speaker (SP1), and the specific core calculation formula is as follows: Among them, V b V is the net acoustic volume of the rear cavity; as Q represents the equivalent volume of the full-range speaker (SP1); ts Q is the overall quality factor of the full-range speaker (SP1); tc Let Q be the target system Q value.

7. The neck-mounted speaker according to claim 5, characterized in that, The angle between the acoustic axis of the first tweeter (T1) and the sagittal plane containing the reference line (L2). The angle between the acoustic axis of the first tweeter T1 and the horizontal plane (S2) of the reference line is 53°. It is 85°.

8. The neck-mounted speaker according to claim 5, characterized in that, The angle between the second tweeter (T2) and the reference line (L2) in the sagittal plane The angle between the acoustic axis of the second tweeter (T2) and the horizontal plane (S2) of the reference line is 58°. It is 82°.

9. The neck-mounted speaker according to claim 5, characterized in that, The angle between the third tweeter (T3) and the sagittal plane containing the reference line (L2) The angle between the acoustic axis of the third tweeter (T3) and the horizontal plane (S2) of the reference line is 73°. It is 84°.

10. The neck-mounted speaker according to claim 5, characterized in that, The angle between the fourth tweeter (T4) and the sagittal plane containing the reference line (L2) The angle between the acoustic axis of the fourth tweeter (T4) and the horizontal plane (S2) of the reference line is 53°. It is 87°.

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