Open earphone and earphone system

Abstract

This application provides an open-back headphone and headphone system, relating to the field of headphone technology, for reducing pressure on the human ear and improving sound clarity. The open-back headphone provided by this application includes: a sound-emitting part, which can be housed within the concha of a human ear, the sound-emitting part having a sound outlet, at least a portion of which is opposite to the human ear canal; an ear hook connected to the sound-emitting part, the ear hook being able to fit snugly against the human ear and extend downwards around the earlobe to the back of the human ear, the ear hook and the sound-emitting part being able to jointly hold the human ear; along the vertical axis, the distance from the center of the projection of the sound outlet in the sagittal plane to the lower vertex of the projection of the ear hook in the sagittal plane is L1, the distance between the upper and lower vertices of the projection of the sound-emitting part in the sagittal plane is L2, and 1.5 ≤ L1 / L2 ≤ 3.5.

Description

Technical Field

[0001] This application relates to the field of headphones, and more particularly to an open-back headphone and headphone system. Background Technology

[0002] Open-back headphones have their sound-producing part located outside the ear canal, eliminating the need for insertion. Compared to in-ear headphones, the open-back design reduces the risk of otitis externa caused by prolonged wear, leading to their wider adoption. However, the size and structure of open-back headphones can affect sound clarity and can also put pressure on the auricle. Utility Model Content

[0003] In view of the above problems, embodiments of this application provide an open-back headphone and headphone system that can reduce pressure on the auricle and improve sound clarity.

[0004] To achieve the above objectives, the embodiments of this application provide the following technical solutions:

[0005] In a first aspect, embodiments of this application provide an open-back headphone, comprising:

[0006] A sound-producing part, which can be housed in the concha cavity of a human ear, and the sound-producing part is provided with a sound outlet hole, at least part of which is opposite to the human ear canal;

[0007] The ear hook is connected to the sound-producing part. The ear hook can fit against the human auricle and extend downward around the earlobe to the back of the human auricle. The ear hook and the sound-producing part can jointly hold the human auricle.

[0008] Along the vertical axis, the distance from the center of the projection of the sound outlet in the sagittal plane to the lower vertex of the projection of the ear hook in the sagittal plane is L1, and the distance between the upper and lower vertices of the projection of the sound-emitting part in the sagittal plane is L2, where 1.5 ≤ L1 / L2 ≤ 3.5.

[0009] In some embodiments of this application, along the vertical axis, the distance from the center of the projection of the sound outlet in the sagittal plane to the lower vertex of the projection of the ear hook in the sagittal plane is L1, and the distance between the upper and lower vertices of the projection of the sound-emitting part in the sagittal plane is L2, where 2≤L1 / L2≤3.

[0010] In some embodiments of this application, along the vertical axis, the distance from the center of the projection of the sound outlet in the sagittal plane to the lower vertex of the projection of the ear hook in the sagittal plane is L1, and the distance between the upper and lower vertices of the projection of the sound-emitting part in the sagittal plane is L2, with L1 / L2 being 2.16.

[0011] In some embodiments of this application, the distance from the center of the projection of the sound outlet hole in the sagittal plane to the lower vertex of the projection of the ear hook in the sagittal plane is L1, and the range of L1 is 20mm≤L1≤35mm.

[0012] In some embodiments of this application, the distance L1 from the center of the projection of the sound outlet hole in the sagittal plane to the lower vertex of the projection of the ear hook in the sagittal plane is any value between 22mm and 33mm; or L1 is any value between 24mm and 31mm; or L1 is any value between 26mm and 29mm.

[0013] In some embodiments of this application, the distance L1 from the center of the projection of the sound outlet hole in the sagittal plane to the lower vertex of the projection of the ear hook in the sagittal plane is 22mm±0.5mm, 24mm±0.5mm, 26mm±0.5mm, 28mm±0.5mm, 30mm±0.5mm, or 32mm±0.5mm.

[0014] In some embodiments of this application, the distance between the upper and lower vertices of the sound-emitting part in the sagittal plane projection is L2, and the range of L2 is 8mm≤L2≤20mm.

[0015] In some embodiments of this application, the distance L2 between the upper and lower vertices of the sound-emitting part projected onto the sagittal plane is any value between 10mm and 16mm; or L2 is any value between 12mm and 14mm.

[0016] In some embodiments of this application, the distance between the center of the sound outlet in the sagittal plane projection and the upper vertex of the sound-emitting part in the sagittal plane projection is L3, and the range of L3 is 2mm≤L3≤10mm.

[0017] Secondly, embodiments of this application provide an earphone system, including the open-back earphones and charging case as described above;

[0018] The open-back earbuds are stored in the charging case.

[0019] The open-back headphones provided in this application have a distance L1 from the center of the sound outlet's projection in the sagittal plane to the lower vertex of the ear hook's projection in the sagittal plane, and a distance L2 between the upper and lower vertices of the sound-producing part's projection in the sagittal plane. By setting 1.5 ≤ L1 / L2 ≤ 3.5, an appropriate gap can be maintained between the lower vertex of the ear hook and the earlobe, reducing direct contact and pressure on the earlobe. Simultaneously, by controlling the L1 / L2 ratio, a suitable distance between the sound outlet and the ear canal can be ensured, without affecting sound clarity. A reasonable L1 / L2 ratio helps optimize the sound propagation path, ensuring users obtain a higher level of sound quality.

[0020] In addition to the technical problems solved by the embodiments of this application, the technical features constituting the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions as described above, other technical problems that this application can solve, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further explained in detail in the specific embodiments. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of the open-back headphones in an embodiment of this application;

[0023] Figure 2 This is a schematic diagram of wearing open-back headphones in an embodiment of this application.

[0024] Figure label:

[0025] 100- Open-back headphones;

[0026] 10-Sound-producing part; 11-Shell; 111-Sound outlet;

[0027] 20 - Ear hooks; 211 - Battery compartment;

[0028] 2- Human auricle; 200- Concha; 300- Ear canal;

[0029] O1 - The center of the projection of the sound outlet in the sagittal plane; O2 - The lower vertex of the projection of the ear hook in the sagittal plane; O3 - The upper vertex of the projection of the sound-producing part in the sagittal plane; O4 - The lower vertex of the projection of the sound-producing part in the sagittal plane.

[0030] A - Sagittal plane; X - Vertical axis direction. Detailed Implementation

[0031] In related technologies, open-back headphones, when worn, have their sound-producing part located in the concha outside the ear canal, without needing to be inserted into the ear. Open-back headphones also feature ear hooks that wrap around the back of the ear. If the sound-producing part of the open-back headphones is large and the ear hook is small, it can cause pressure on the ear, affecting wearing comfort. If the sound-producing part is small and the ear hook is large, gravity increases the distance between the sound-producing part and the ear canal, causing sound to gradually attenuate during propagation, thus reducing sound clarity. Especially in noisy environments, excessive distance can cause the sound to be completely masked by background noise, affecting sound clarity.

[0032] To address the aforementioned issues, this application provides an open-back headphone. The distance from the center of the sound outlet's projection in the sagittal plane to the lower vertex of the ear hook's projection in the sagittal plane is L1, and the distance between the upper and lower vertices of the sound-emitting part's projection in the sagittal plane is L2. By setting 1.5 ≤ L1 / L2 ≤ 3.5, an appropriate gap can be maintained between the lower vertex of the ear hook and the earlobe, reducing direct contact and pressure on the earlobe. Simultaneously, by controlling the L1 / L2 ratio, a suitable distance between the sound outlet and the ear canal can be ensured, without affecting sound clarity. A reasonable L1 / L2 ratio helps optimize the sound propagation path, ensuring users obtain a higher level of sound quality.

[0033] To make the above-mentioned objectives, features, and advantages of the embodiments of this application more apparent and understandable, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0034] It is understandable that individual differences may exist among users, resulting in variations in ear shape, size, and other dimensions. For ease of description and understanding, unless otherwise specified, this specification will primarily use an ear model with a "standard" shape and size as a reference to further describe how the acoustic device in different embodiments is worn on this ear model. For example, a simulator containing a head and its (left and right) ears, such as the GRAS 45BCK EMAR, manufactured based on ANSI:S3.36, S3.25 and IEC:60318-7 standards, can be used as a reference for wearing the acoustic device, thus representing the scenario where most users normally wear the acoustic device. Therefore, in this specification, descriptions such as "user wearing," "in wearing state," and "under wearing state" can refer to the acoustic device of this specification being worn on the ear of the aforementioned simulator. Of course, considering the individual differences among different users, the structure, shape, size, thickness, etc. of one or more parts of the ear can be designed differently according to the different shapes and sizes of ears. These differentiated designs can be expressed as the characteristic parameters of one or more parts of the acoustic device having different ranges of values, so as to adapt to different ears.

[0035] It should be noted that 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 perpendicular to the coronal plane along the anteroposterior direction of the body; the coronal axis is the axis perpendicular to the sagittal plane along the left-right direction of the body; and the vertical axis is the axis perpendicular to the horizontal plane along the vertical direction of the body.

[0036] In the relevant embodiments of this application, the definitions of the sagittal plane and the vertical axis are consistent with the definitions of the human sagittal plane and the vertical axis described above.

[0037] Reference Figure 1 As shown, this application provides an open-back headphone 100, which includes a sound-generating part 10 responsible for producing sound. The sound-generating part 10 is placed within the concha cavity 200, which can reduce sound leakage and improve the clarity of sound quality and the effective transmission of volume.

[0038] The sound-emitting part 10 includes a housing 11 and a speaker assembly, with the housing 11 enclosing an acoustic cavity. The speaker assembly is located within the acoustic cavity and includes at least one speaker unit. A sound outlet 111 is provided on the side of the housing 11 closest to the human ear canal 300; that is, a sound outlet 111 is provided on the side of the housing 11 opposite to the human ear canal 300. The diaphragm of the speaker unit is positioned close to the sound outlet 111, allowing sound to pass directly from the diaphragm through the sound outlet 111 and be transmitted to the human ear canal 300. This reduces sound wave reflection and loss within the cavity, helping to improve sound clarity and purity, ensuring the user hears a more realistic and detailed sound. Furthermore, because the distance between the speaker unit's diaphragm and the sound outlet 111 is short, the sound propagation path is more direct, reducing the possibility of multiple reflections of sound waves within the acoustic cavity, thereby reducing distortion and providing more accurate sound quality.

[0039] Combination Figure 1 and Figure 2 As shown, the open-back headphones 100 include an ear hook 20 connected to the sound-emitting part 10. The ear hook 20 fits snugly against the human earlobe 2 and extends downwards around the earlobe to the back of the earlobe 2. The ear hook 20 and the sound-emitting part 10 together hold the human earlobe 2. The ear hook 20 provides additional support and stability to the open-back headphones 100, preventing the headphones from slipping off during exercise or prolonged wear.

[0040] A battery compartment 211 is provided on the ear hook 20 in the area behind the human ear 2, and a battery is provided in the battery compartment 211 to provide power to the open-back headphones 100.

[0041] Specifically, the ear hook 20 can be made of an elastic material that can produce elastic deformation and has the elasticity to return to its original shape when stretched. For example, when the open-back headphones 100 are worn, the sound-producing part 10 is located in the concha 200, and part of the ear hook 20 is located behind the auricle 2. At this time, the ear hook 20 is in a stretched state, and its elasticity can act as a driving force to make the sound-producing part 10 and the ear hook 20 clamp the ear.

[0042] The elastic material may include shape memory alloy wire, thermoplastic elastomer (TPE), silicone, or a composite structure composed of the above materials. This application is not limited thereto, as long as the material and structure of the ear hook 20 are elastic and can support the weight of the open-back headphone 100.

[0043] Reference Figure 2As shown, along the vertical axis X, the ear hook 20 has an upper vertex and a lower vertex that are set opposite to each other, the sound-emitting part 10 has an upper vertex and a lower vertex that are set opposite to each other, the distance from the center of the projection of the sound hole 111 onto the sagittal plane A to the lower vertex of the projection of the ear hook 20 onto the sagittal plane A is L1, and the distance between the upper vertex and the lower vertex of the projection of the sound-emitting part 10 onto the sagittal plane A is L2, 1.5≤L1 / L2≤3.5.

[0044] It is understandable that the center of the projection of the sound outlet 111 onto the sagittal plane A is point O1 in the figure, and the lower vertex of the ear hook 20 along the vertical axis X is point O2 in the figure, with L1 being the distance between points O1 and O2 along the vertical axis X. Correspondingly, the upper vertex of the sound-emitting part 10 is point O3 in the figure, and the lower vertex of the sound-emitting part 10 is located at point O4 in the figure, with L2 being the distance between points O3 and O4 along the vertical axis X.

[0045] If L1 / L2 is greater than 3.5 (e.g., L1 is 40mm and L2 is 10mm), the distance from the center O1 of the projection of the sound outlet 111 onto the sagittal plane A to the lower vertex O2 of the projection of the ear hook 20 onto the sagittal plane A is relatively large, while the distance between the upper vertex O3 and the lower vertex O4 of the projection of the sound-emitting part 10 onto the sagittal plane A is relatively small. In this case, the center of gravity of the open-back headphone 100 is lower, and the sound-emitting part 10, under the influence of gravity, fits tightly against the bottom of the concha 200, increasing the distance between the sound outlet 111 on the sound-emitting part 10 and the ear canal 300. This causes the sound to gradually attenuate during propagation, thus reducing the clarity of the sound.

[0046] In addition, the distance from the center O1 of the projection of the sound outlet 111 onto the sagittal plane A to the lower vertex O2 of the projection of the ear hook 20 onto the sagittal plane A is moderate, and the distance between the upper vertex O3 and the lower vertex O4 of the projection of the sound-emitting part 10 onto the sagittal plane A is appropriate. This can prevent the sound-emitting part 10 from falling out of the concha cavity 200 due to its small size, and can also prevent the ear hook 20 from being too long and affecting its clamping effect, thereby preventing the open-back headphones 100 from falling off.

[0047] If L1 / L2 is less than 1.5 (e.g., L1 is 16mm and L2 is 12mm), the distance from the center O1 of the projection of the sound outlet 111 onto the sagittal plane A to the lower vertex O2 of the projection of the ear hook 20 onto the sagittal plane A is small, while the distance between the upper vertex O3 and the lower vertex O4 of the projection of the sound-emitting part 10 onto the sagittal plane A is large. In this case, the sound-emitting part 10 of the open-back headphone 100 is large and is not easy to detach from the concha cavity 200, while the distance from the center of the projection of the sound outlet 111 onto the sagittal plane A to the lower vertex of the projection of the ear hook 20 onto the sagittal plane A is small, which will cause the ear hook 20 to press against the auricle 2, affecting the wearing comfort.

[0048] Furthermore, the distance from the center O1 of the projection of the sound outlet 111 onto the sagittal plane A to the lower vertex O2 of the projection of the ear hook 20 onto the sagittal plane A is moderate, and the distance between the upper vertex O3 and the lower vertex O4 of the projection of the sound-emitting part 10 onto the sagittal plane A is appropriate. This prevents the ear hook 20 from being too short and the sound-emitting part 10 from being too large, which would cause the sound-emitting part 10 to form a closed cavity with the concha 200 and the ear canal 300. Sound wave reflection within the cavity may trigger resonance, resulting in a resonance effect. A reasonable L1 / L2 ratio helps optimize the sound propagation path, ensuring that users obtain a higher level of sound quality.

[0049] It should be noted that by setting 1.5≤L1 / L2≤3.5, an appropriate distance can be maintained between the lower apex of the ear hook 20 and the earlobe, reducing direct contact and pressure on the earlobe. Simultaneously, by controlling the L1 / L2 ratio, the distance between the sound outlet 111 and the ear canal 300 can be ensured to be moderate, without affecting sound quality. A reasonable L1 / L2 ratio helps optimize the sound propagation path, ensuring users obtain a higher level of sound quality.

[0050] In some possible implementations, the ratio of L1 / L2 can be set to 2 ≤ L1 / L2 ≤ 3. This further optimizes the sound propagation path, ensuring sound clarity and providing users with a higher level of sound quality. It also further prevents the ear hook 20 from compressing the auricle 2, thus ensuring wearing comfort.

[0051] In some possible implementations, L1 is 27mm in size, L2 is 12.5mm in size, and L1 / L2 is 2.16. Within the range of 1.5 ≤ L1 / L2 ≤ 3.5, this configuration ensures an appropriate distance between the lower apex of the ear hook 20 and the earlobe, reducing direct contact and pressure on the earlobe. Simultaneously, it ensures that the sound-producing part 10 can be worn within the concha 200, reducing pressure on the concha 200. Furthermore, this configuration ensures that the user obtains a higher level of sound quality.

[0052] Continue to refer to Figure 2 As shown, along the vertical axis X, the ear hook 20 has an upper vertex and a lower vertex that are positioned opposite each other. The distance from the center of the projection of the sound outlet 111 onto the sagittal plane A to the lower vertex of the projection of the ear hook 20 onto the sagittal plane A is L1. The range of L1 is 20mm ≤ L1 ≤ 35mm.

[0053] As mentioned earlier, the center of the projection of the sound outlet 111 onto the sagittal plane A is point O1 in the figure, and the lower vertex of the ear hook 20 along the vertical axis X is point O2 in the figure, where L1 is the distance between point O1 and point O2 along the vertical axis X.

[0054] It should be noted that, in the embodiments of this application, the distance L1 can ensure that, under the premise that the sound hole 111 corresponds to the ear canal 300, the lower vertex of the ear hook 20 along the vertical axis will not exert too much pressure on the earlobe.

[0055] If L1 is less than 20mm, the lower apex O2 of the ear hook 20 may be too close to the earlobe, causing contact between the ear hook 20 and the earlobe. This pressure on the earlobe can lead to pain and numbness after prolonged wear. The distance from the lower apex O2 to the center O1 of the sound outlet 111 along the vertical axis X should be at least 20mm. This effectively increases the distance between the earlobe and the ear hook 20, minimizing contact between the lower apex of the ear hook 20 and the ear, reducing discomfort from the ear hook 20 pressing against the earlobe during prolonged wear of open-back headphones 100, and ensuring wearing comfort.

[0056] The distance from the lower vertex O2 to the center O1 of the sound outlet 111 along the vertical axis X is at most 35mm. It is understandable that by limiting L1 to within 35mm, the center of gravity shift of the open-back headphone 100 can be reduced, preventing the sound-emitting part 10 from shifting downwards. This prevents an increase in the distance between the sound outlet 111 on the sound-emitting part 10 and the ear canal 300, thus preventing sound from losing energy due to excessive distance during propagation and affecting sound clarity. Furthermore, limiting L1 to within 35mm ensures a more compact headphone design, avoiding bulkiness and facilitating portability and storage.

[0057] In some possible embodiments, the distance L1 from the center O1 of the projection of the sound outlet 111 onto the sagittal plane A to the lower vertex O2 of the projection of the ear hook 20 onto the sagittal plane A is any value between 22mm and 33mm. A minimum value of 22mm ensures sufficient spacing between the ear hook 20 and the earlobe, preventing excessive pressure from the ear hook 20 and reducing discomfort during wear. A maximum value of 33mm ensures a suitable distance between the sound outlet 111 and the ear canal 300, optimizing the sound propagation path and guaranteeing sound clarity.

[0058] Furthermore, the distance L1 from the center O1 of the projection of the sound outlet 111 onto the sagittal plane A to the lower vertex O2 of the projection of the ear hook 20 onto the sagittal plane A is any value between 24mm and 31mm. A minimum value of 24mm for L1 further ensures sufficient spacing between the ear hook 20 and the earlobe, preventing excessive pressure from the ear hook 20 and reducing discomfort during wear. A maximum value of 31mm for L1 further ensures a suitable distance between the sound outlet 111 and the ear canal 300, optimizing the sound propagation path and guaranteeing sound clarity.

[0059] Furthermore, the distance L1 from the center O1 of the projection of the sound outlet 111 onto the sagittal plane A to the lower vertex O2 of the projection of the ear hook 20 onto the sagittal plane A is any value between 26mm and 29mm. The minimum value of L1 is 26mm, which makes the distance between the ear hook 20 and the earlobe more moderate and minimizes the feeling of pressure. The maximum value of L1 is 29mm, which further optimizes the sound propagation path and ensures the clarity of the sound quality.

[0060] In some possible embodiments, the distance L1 from the center O1 of the projection of the sound outlet 111 onto the sagittal plane A to the lower vertex O2 of the projection of the ear hook 20 onto the sagittal plane A is 22mm±0.5mm, 24mm±0.5mm, 26mm±0.5mm, 28mm±0.5mm, 30mm±0.5mm, or 32mm±0.5mm. L1 can be set according to specific requirements.

[0061] L1 is 22mm±0.5mm. At this point, the open-back headphone 100 can be used for easy portability.

[0062] The L1 is 24mm ± 0.5mm. At this point, the open-back headphone 100 can fit most ear shapes and provide good wearing comfort.

[0063] The L1 measurement is 26mm ± 0.5mm. At this measurement, the open-back headphone 100 can provide better wearing comfort and is suitable for long-term use.

[0064] L1 is 28mm±0.5mm. At this point, the open-back headphones minimize sound distortion, making them suitable for long-term wear and reducing ear fatigue.

[0065] L1 is 30mm±0.5mm. At this point, the open-back headphones 100 are suitable for users with large ears, which can reduce pressure on the auricle 2.

[0066] The L1 is 32mm ± 0.5mm. At this point, the open-back headphone 100 is suitable for users with large ears and headphones that require more space.

[0067] As mentioned earlier, the distance between the upper and lower vertices of the sound-emitting part 10 projected onto the sagittal plane A is L2. The upper vertex of the sound-emitting part 10 is point O3 in the figure, and the lower vertex of the sound-emitting part 10 is located at point O4 in the figure. L2 is the distance between point O3 and point O4 along the vertical axis X. The range of L2 is 8mm ≤ L2 ≤ 20mm.

[0068] If L2 is less than 8mm, the sound-emitting part 10 is too small, resulting in a smaller contact area between the sound-emitting part 10 and the concha 200. This can easily cause the sound-emitting part 10 to slip out of the concha 200, affecting the stability of the fit. Furthermore, a smaller sound-emitting part 10 increases the sound propagation path, affecting sound clarity. If L2 is greater than 20mm, the sound-emitting part 10 is too large, which can easily cause the sound-emitting part 10, the concha 200, and the ear canal 300 to form a closed cavity. Sound wave reflection within this cavity may trigger resonance, resulting in a resonance effect. Therefore, a L2 range of 8mm ≤ L2 ≤ 20mm ensures the stability of the fit and prevents resonance.

[0069] In some possible implementations, the distance L2 between the upper vertex O3 and the lower vertex O4 of the sound-emitting part 10 projected onto the sagittal plane A is any value between 10 mm and 16 mm. This improves the clarity of the sound and prevents resonance.

[0070] In some possible implementations, the distance L2 between the upper vertex O3 and the lower vertex O4 of the sound-emitting part 10 projected onto the sagittal plane A is any value between 12 mm and 14 mm. This further improves the clarity of the sound and prevents resonance.

[0071] Furthermore, the distance L2 between the upper vertex O3 and the lower vertex O4 of the sound-emitting part 10 projected onto the sagittal plane A is set to 12.5mm, which provides high wearing comfort and clear sound.

[0072] Continue to refer to Figure 2 As shown, the distance between the center of the sound outlet 111 projected onto the sagittal plane A and the upper vertex of the sound-emitting part 10 projected onto the sagittal plane A is L3. The center of the sound outlet 111 projected onto the sagittal plane A is point O1 in the figure, and the upper vertex of the sound-emitting part 10 is point O3 in the figure. L3 is the distance between point O1 and point O3 along the vertical axis X, and the range of L3 is 2mm≤L3≤10mm.

[0073] If L3 is greater than 10mm, it means the distance between the sound outlet 111 and the ear canal 300 is relatively large, and energy loss may occur during sound propagation, affecting the clarity of the sound quality. If L3 is less than 2mm, the distance between the sound outlet 111 and the ear canal 300 is too small, which may result in a short sound propagation path and cause sound resonance. A distance of 2mm ≤ L3 ≤ 10mm ensures sound clarity and reduces sound resonance.

[0074] For example, L3 can be set to 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, or 10mm according to specific needs.

[0075] Furthermore, L3 affects the position of the sound outlet 111 in the sound-emitting part 10, thus indirectly affecting L1. When L1 is the same, if L3 is too small, it will compress the auricle 2. When L1 is the same, if L3 is too large, it will easily cause the open-back headphones 100 to fall out.

[0076] This application also provides an earphone system, including the open-back earphone 100 as described above and a charging case. The open-back earphone 100 can be stored in the charging case, making it easy to carry and allowing users to place the earphones in a pocket, bag, or other portable container. The charging case provides a compact storage space for the open-back earphone 100 and protects it from external damage.

[0077] The various embodiments or implementation methods described in this specification are presented in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0078] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0079] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An open-back headphone, characterized in that, include: A sound-emitting part (10) is provided, which can be accommodated in the human ear canal (200). The sound-emitting part (10) is provided with a sound outlet (111), and at least part of the sound outlet (111) is opposite to the human ear canal (300). The ear hook (20) is connected to the sound-producing part (10). The ear hook (20) can fit against the human auricle (2) and extend downward around the earlobe to the back of the human auricle (2). The ear hook (20) and the sound-producing part (10) can jointly hold the human auricle (2). Along the vertical axis, the distance from the center of the projection of the sound outlet (111) in the sagittal plane to the lower vertex of the projection of the ear hook (20) in the sagittal plane is L1, and the distance between the upper and lower vertices of the projection of the sound-emitting part (10) in the sagittal plane is L2, 1.5≤L1 / L2≤3.

5.

2. The open-back headphone according to claim 1, characterized in that, Along the vertical axis, the distance from the center of the projection of the sound outlet (111) in the sagittal plane to the lower vertex of the projection of the ear hook (20) in the sagittal plane is L1, and the distance between the upper and lower vertices of the projection of the sound-emitting part (10) in the sagittal plane is L2, 2≤L1 / L2≤3.

3. The open-back headphone according to claim 2, characterized in that, Along the vertical axis, the distance from the center of the projection of the sound outlet (111) in the sagittal plane to the lower vertex of the projection of the ear hook (20) in the sagittal plane is L1, and the distance between the upper and lower vertices of the projection of the sound-emitting part (10) in the sagittal plane is L2, and L1 / L2 is 2.

16.

4. The open-back headphone according to claim 1, characterized in that, The distance from the center of the projection of the sound outlet (111) in the sagittal plane to the lower vertex of the projection of the ear hook (20) in the sagittal plane is L1, and the range of L1 is 20mm≤L1≤35mm.

5. An open-back headphone according to claim 4, characterized in that, The distance L1 from the center of the projection of the sound outlet (111) in the sagittal plane to the lower vertex of the projection of the ear hook (20) in the sagittal plane is any value between 22mm and 33mm; or L1 is any value between 24mm and 31mm; or L1 is any value between 26mm and 29mm.

6. An open-back headphone according to claim 5, characterized in that, The distance L1 from the center of the projection of the sound outlet (111) in the sagittal plane to the lower vertex of the projection of the ear hook (20) in the sagittal plane is 22mm±0.5mm, 24mm±0.5mm, 26mm±0.5mm, 28mm±0.5mm, 30mm±0.5mm, or 32mm±0.5mm.

7. The open-back headphone according to claim 1, characterized in that, The distance between the upper and lower vertices of the sound-emitting part (10) in the sagittal plane projection is L2, and the range of L2 is 8mm≤L2≤20mm.

8. An open-back headphone according to claim 7, characterized in that, The distance L2 between the upper and lower vertices of the sound-emitting part (10) in the sagittal plane projection is any value between 10mm and 16mm; or L2 is any value between 12mm and 14mm.

9. An open-back headphone according to any one of claims 1-8, characterized in that, The distance between the center of the sound outlet (111) in the sagittal plane projection and the upper vertex of the sound-emitting part (10) in the sagittal plane projection is L3, and the range of L3 is 2mm≤L3≤10mm.

10. A headphone system, characterized in that, Includes the open-back earphones (100) as described in any one of claims 1-9 and the charging case; The open-back earphones (100) are housed in the charging case.

Images