Light guide structure of bone conduction earphone and bone conduction earphone

Abstract

The utility model relates to the technical field of bone conduction earphones, in particular to a light guide structure of a bone conduction earphone and the bone conduction earphone, which comprises a shell, a light guide body, a circuit board and a luminous source, the light guide body and the circuit board are arranged in the shell, the luminous source is arranged on the circuit board, the shell is provided with a concave area, and the light guide body is embedded in the concave area. The side, close to the circuit board, of the light guide body abuts against the light emitting source in a blocking mode so that the light guide body can be clamped and installed between the shell and the circuit board, a plurality of light emitting parts are arranged on the side, close to the shell, of the light guide body, and the light emitting parts are arranged at intervals in the length direction of the light guide body so that the light emitting parts can be exposed out of the shell. According to the utility model, the structure is compact, the layout is reasonable, the plurality of light emitting parts arranged at intervals are clamped and fixed on the inner wall of the shell, the light guide body is clamped and installed between the shell and the circuit board, the installation and disassembly are convenient, and the indication effect and the use experience feeling are improved.

Description

[0001] This application claims the priority of the Chinese patent application filed with the China Patent Office on May 25, 2023, with application number 202310599747.2 and application name “A light guide structure for bone conduction headphones”, all contents of which are incorporated by reference in this application. Technical Field

[0002] The utility model relates to the technical field of bone conduction earphones, in particular to a light guide structure of a bone conduction earphone and a bone conduction earphone. Background Art

[0003] Bone conduction headphones use the bone conduction principle to enable people to hear. They include bone conduction headphone heads, which are in contact with the skin of the human face and generate sound waves through mechanical vibration. The sound waves pass through the skull and cause corresponding fluctuations in the perilymph, and touch the cochlear spiral to produce hearing. Due to the small size and structure of bone conduction headphones and the large number of internal electronic components, the assembly space of the light guide structure is further reduced, which is not conducive to assembly and fixation, and may even cause loosening and falling due to failure to successfully assemble, affecting normal use. Therefore, the light guide structure is usually designed as an integrated part. However, when one of the indicator lights is on, during the conduction of light on the light guide structure, it is easy for part of the light to be transmitted along the light guide structure to the corresponding surfaces of other adjacent indicator lights, resulting in accidental cross-lighting, making it difficult to visually identify which indicator light is on, resulting in poor indication effect and reduced user experience. Utility Model Content

[0004] In view of the shortcomings of the above-mentioned prior art, the problem to be solved by the utility model is to provide a light guide structure of a bone conduction headset and a bone conduction headset, which have a compact structure and a reasonable layout. A plurality of spaced-apart light emitting parts are snap-fitted and fixed to the inner wall of the shell, so that the light guide is clamped and installed between the shell and the circuit board, which is convenient for installation and disassembly, and improves the indication effect and the user experience.

[0005] To achieve the above-mentioned purpose, the utility model provides a light guide structure of a bone conduction headset, comprising a shell, a light guide body and a circuit board arranged in the shell, and a light source arranged in the circuit board, wherein the shell is provided with a recessed area, the light guide body is embedded in the recessed area, a side of the light guide body close to the circuit board is stopped and abutted against the light source, so that the light guide body is clamped and installed between the shell and the circuit board, a side of the light guide body close to the shell is provided with a plurality of light emitting parts, and the plurality of light emitting parts are arranged at intervals along the length direction of the light guide body, so that the plurality of light emitting parts are exposed from the shell;

[0006] The light emitting portion is in a prism shape, a gap groove is provided between two adjacent light emitting portions, and the outer edges of the light emitting portions are all provided with chamfers.

[0007] Furthermore, the shell is provided with a through slot, a plurality of through slots are provided and are recessed from the outer wall of the shell, a limiting block is provided between two adjacent through slots, and the light emitting portion is stopped and abutted against the limiting block through the gap slot.

[0008] Furthermore, a receiving groove for accommodating the light guide is provided in the shell, the receiving groove is recessed from the bottom surface of the shell, and the shell is provided with a first positioning member and a second positioning member at intervals along the length direction of the receiving groove, and the first positioning member and the second positioning member are both used to stop the outer side of the circuit board from interfering.

[0009] Furthermore, the first positioning member includes a first positioning plate and a connecting block integrally formed with the first positioning plate, the connecting block protrudes from the inner wall of the shell, the connecting block is vertically arranged to the first positioning plate, and the outer wall of the first positioning plate is in contact with the outer wall of the circuit board to position the circuit board between the first positioning plate and the light guide.

[0010] Furthermore, the second positioning member includes a second positioning plate, a reinforcing rib integrally formed with the second positioning plate, and a contact block protruding from the second positioning plate, the reinforcing rib protruding from the inner wall of the shell, the reinforcing rib being vertically arranged to the second positioning plate, and the contact block being used to stop contact with the bottom wall of the light guide.

[0011] Furthermore, the circuit board is provided with a slot, which is recessed inward from the bottom wall of the circuit board, and the abutment block is accommodated in the slot to position the circuit board between the second positioning plate and the light guide.

[0012] Furthermore, the light guide includes a light-guiding portion and a light-receiving portion recessed in the light-guiding portion, the light-receiving portion being arranged opposite to the light source and used for receiving the light emitted by the light source, the light-guiding portion being used for scattering and distributing the light to the light-emitting portion, and a plurality of light-emitting portions being protruding from the light-guiding portion and used for emitting the light guided by the light-guiding portion.

[0013] Furthermore, the light receiving portion includes a straight surface, curved surfaces arranged at both ends of the straight surface, and a covering surface arranged between the straight surface and the curved surface. The straight surface, the curved surface, and the covering surface are integrally formed and enclosed to form a semi-enclosed structure.

[0014] Furthermore, the shell and the light guide are made of the same plastic component, and the shell and the light guide are connected by a sleeve connection.

[0015] Furthermore, it also includes a covering layer, which is covered on the outside of the shell, and the part of the light guide protruding from the shell is exposed outside the covering layer, and the covering layer is connected to the shell and the light guide by a sheathing method.

[0016] Furthermore, a glue groove is provided on the shell, the glue groove is located between the shell and the light guide, and the glue groove contains sealant.

[0017] Furthermore, the glue groove is located on a side of the shell facing the coating layer.

[0018] Furthermore, the shell is a non-light-absorbing and non-transparent plastic part.

[0019] Furthermore, the light guide is a transparent plastic part.

[0020] Furthermore, the coating layer is a silica gel layer.

[0021] Furthermore, the light guide is made of organic photoconductive material.

[0022] A second aspect of the present application provides a bone conduction headset, comprising any of the above-mentioned light guide structures of the bone conduction headset.

[0023] The beneficial effects of the utility model are as follows: the structure is compact and the layout is reasonable. A plurality of light-emitting parts arranged at intervals are snap-fitted and fixed to the inner wall of the shell, so that the light guide is clamped and installed between the shell and the circuit board, which is convenient for installation and disassembly, and improves the indication effect and the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0025] Figure 1 It is a schematic diagram of the structure of the utility model;

[0026] Figure 2 It is a schematic diagram of the exploded structure of the utility model;

[0027] Figure 3 This is a schematic diagram of the housing structure of the utility model;

[0028] Figure 4 This is a schematic diagram of the structure of the housing of the utility model from another angle;

[0029] Figure 5 This is a schematic diagram of the light guide structure of the utility model;

[0030] Figure 6 This is a schematic structural diagram of the light guide of the utility model from another angle;

[0031] Figure 7A cross-sectional view of a light guide structure provided in an embodiment of the present application;

[0032] Figure 8 for Figure 7 Enlarged view of area A in the middle;

[0033] Fig. 9 A schematic structural diagram of a shell provided in an embodiment of the present application.

[0034] Description of reference numerals:

[0035] 1-housing; 11-recessed area; 12-through slot; 13-limiting block; 14-accommodating slot;

[0036] 15-first positioning member; 151-first positioning plate; 152-connecting block;

[0037] 16-second positioning member; 161-second positioning plate; 162-reinforcement rib; 163-contact block;

[0038] 17-Glue groove;

[0039] 2-light guide; 21-light output portion; 22-gap groove; 23-chamfer; 24-light guide portion;

[0040] 25-light receiving part; 251-flat surface; 252-curved surface; 253-covering surface;

[0041] 3-circuit board; 31-card slot;

[0042] 4- Light source;

[0043] 5-Coating layer. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0045] like Figures 1 to 6As shown, the utility model is a light guide structure of a bone conduction headset, comprising a shell 1, a light guide 2 and a circuit board 3 arranged on the shell 1, and a light source 4 arranged on the circuit board 3, the shell 1 is provided with a recessed area 11, the light guide 2 is embedded in the recessed area 11, the side of the light guide 2 close to the circuit board 3 is stopped and abutted against the light source 4, so that the light guide 2 is clamped and installed between the shell 1 and the circuit board 3, and a plurality of light emitting portions 21 are arranged on the side of the light guide 2 close to the shell 1, and the plurality of light emitting portions 21 are arranged at intervals along the length direction of the light guide 2, so that the plurality of light emitting portions 21 are exposed from the shell 1.

[0046] The housing 1 is composed of an upper housing and a lower housing that are snap-fitted and covered with each other. The recessed area 11 is recessed from the surface of the lower housing and the opening faces upward, so that the light guide 2 is placed from top to bottom and embedded in the recessed area 11, and one side of the light guide 2 is snap-fitted and fixed to the inner wall of the housing 1 through multiple light emitting parts 21 arranged at intervals, taking into account good positioning and anti-cross-light functions, which helps multiple light emitting parts 21 to work independently without affecting each other. When the upper housing and the lower housing are covered up and down, the circuit board 3 installed in the upper housing is also inserted into the recessed area 11 accordingly. The other side of the light guide 2 is stopped and abutted against the light source 4, and then pressure is applied to the left and right sides of the light guide 2, so that the light guide 2 is clamped and installed between the housing 1 and the circuit board 3. The installation is stable and reliable, and it is convenient to install and disassemble. Moreover, the multiple light emitting parts 21 fully expose the housing 1, which can satisfy the light guide 2 has good light guiding performance and indication function. When the light guide 2 needs to be disassembled, it is only necessary to take out the circuit board 3 through the lower shell, so that the light guide 2 is loosened and not clamped for easy removal. The assembly space utilization rate is high and the loading and unloading is convenient. The utility model has a compact structure and a reasonable layout. Through the multiple light emitting parts 21 arranged at intervals, which are fixed to the inner wall of the housing 1, the light guide 2 is clamped and installed between the housing 1 and the circuit board 3, which is convenient for installation and disassembly, and improves the indication effect and the user experience.

[0047] The light emitting portion 21 of this embodiment is prismatic, and a gap groove 22 is provided between two adjacent light emitting portions 21, and the outer edges of the light emitting portions 21 are all provided with chamfers 23. Specifically, a gap groove 22 is provided between two adjacent light emitting portions 21, which plays a role of physical isolation so that the multiple light emitting portions 21 can work independently, effectively preventing the situation where one light emitting portion 21 accidentally transmits light to another light emitting portion 21 when emitting light. The prismatic light emitting portion 21 has a large light emitting area, evenly disperses and propagates light, and the light emitting point is not visible, making the light softer, reducing brightness loss, and having a good light emitting effect. The chamfer 23 prevents the corners of the light emitting portion 21 from scratching the surface of the housing 1 when the light emitting portion 21 is snap-fitted and assembled in the housing 1, plays a role of structural protection, and can also make the assembly between the light emitting portion 21 and the housing 1 simpler and more convenient.

[0048] The housing 1 of this embodiment is provided with a through slot 12, and the through slot 12 is provided with a plurality of through slots 12 and is formed by being recessed from the outer wall of the housing 1. A limiting block 13 is provided between two adjacent through slots 12, and the light emitting portion 21 is stopped and abutted against the limiting block 13 through a gap slot 22. Specifically, three through slots 12 are provided, and the three through slots 12 are arranged at intervals along the length direction of the housing 1. A limiting block 13 is provided between two adjacent through slots 12. Correspondingly, a gap slot 22 is provided between two adjacent light emitting portions 21, thereby causing the inner groove wall of the gap slot 22 to stop and abut against the outer wall of the limiting block 13, so as to ensure that the outer end face of the light emitting portion 21 is flush with the outer side face of the housing 1, and the fit is high, which not only plays a role in fixing the position of the light guide 2, but also helps the light guide 2 to play a role in indicating high-definition bright light, and the indicating effect is remarkable.

[0049] The housing 1 of this embodiment is provided with a receiving groove 14 for receiving the light guide 2, the receiving groove 14 is formed by being recessed from the bottom surface of the housing 1, and the housing 1 is provided with a first positioning member 15 and a second positioning member 16 at intervals along the length direction of the receiving groove 14, and the first positioning member 15 and the second positioning member 16 are both used to stop and abut against the outer side of the circuit board 3. Specifically, the receiving groove 14 is formed by being recessed from the bottom surface of the housing 1, which is conducive to receiving the light guide 2, and the inner groove wall of the receiving groove 14 stops and abuts against the outer wall of the light guide 2 to prevent the light guide 2 from shaking and tilting in the housing 1, and then the first positioning member 15 and the second positioning member 16 are used to stop and abut against the outer side of the circuit board 3, so that the light guide 2 is stably clamped between the circuit board 3 and the housing 1, and a good positioning effect is played on the light guide 2.

[0050] The first positioning member 15 of the present embodiment includes a first positioning plate 151 and a connecting block 152 integrally formed with the first positioning plate 151, the connecting block 152 is protruded from the inner wall of the housing 1, the connecting block 152 is vertically arranged with the first positioning plate 151, and the outer wall of the first positioning plate 151 is in contact with and fits against the outer wall of the circuit board 3, so as to position the circuit board 3 between the first positioning plate 151 and the light guide 2. Specifically, the connecting block 152 is protruded from the inner wall of the housing 1, and the connecting block 152 is vertically arranged with the first positioning plate 151, the housing 1 is fixedly connected with the first positioning plate 151 through the connecting block 152, and the structure has good stability, so that the outer wall of the first positioning plate 151 is in contact with and fits against the outer wall of the circuit board 3, so as to clamp and position the light guide 2 between the housing 1 and the circuit board 3, and play a good limiting role on the light guide 2, thereby ensuring the installation stability of the light guide 2.

[0051] The second positioning member 16 of this embodiment includes a second positioning plate 161, a reinforcing rib 162 integrally formed with the second positioning plate 161, and a resisting block 163 protruding from the second positioning plate 161, wherein the reinforcing rib 162 protrudes from the inner wall of the housing 1, the reinforcing rib 162 is arranged perpendicularly to the second positioning plate 161, and the resisting block 163 is used to stop and resist the bottom wall of the light guide 2. Specifically, the reinforcing rib 162 protrudes from the inner wall of the housing 1, and the reinforcing rib 162 is arranged perpendicularly to the second positioning plate 161, so as to improve the structural strength of the second positioning plate 161, and is not easily deformed by compression during use. A groove is provided on the bottom wall of the circuit board 3, and the groove is used to insert and fix the outer surface of the resisting block 163, so as to further play a good limiting role on the circuit board 3, and the outer wall of the second positioning plate 161 is in contact with the outer wall of the circuit board 3, so as to clamp and position the light guide 2 between the housing 1 and the circuit board 3, thereby ensuring the installation stability of the light guide 2.

[0052] The circuit board 3 of this embodiment is provided with a card slot 31, which is formed by being recessed inward from the bottom wall of the circuit board 3, and the abutment block 163 is accommodated in the card slot 31 to position the circuit board 3 between the second positioning plate 161 and the light guide 2. Specifically, the card slot 31 is formed by being recessed inward from the bottom wall of the circuit board 3, and the circuit board 3 is fixed to the abutment block 163 by means of the card slot 31, so as to prevent the circuit board 3 from loosening and falling off, so as to fix the circuit board 3 between the first positioning member 15, the second positioning member 16 and the housing 1, and the clamping and positioning effect is good.

[0053] The light guide 2 of the present embodiment includes a light guiding portion 24 and a light receiving portion 25 recessed in the light guiding portion 24, the light receiving portion 25 being arranged opposite to the light source 4 and used for receiving the light emitted by the light source 4, the light guiding portion 24 being used for scattering and distributing the light to the light emitting portion 21, and a plurality of light emitting portions 21 being protruding from the light guiding portion 24 and used for emitting the light guided by the light guiding portion 24. Specifically, as a preference, three light emitting portions 21 are provided, and three light receiving portions 25 are provided, the three light emitting portions 21 being protruding from the top of the light guiding portion 24, the three light receiving portions 25 being recessed from the bottom of the light guiding portion 24, the three light emitting portions 21 and the three light receiving portions 25 being arranged opposite to each other and spaced apart along the length direction of the light guiding portion 24, the position of each light emitting portion 21 being arranged in one-to-one correspondence with the position of each light receiving portion 25, the light source 4 being placed below the light receiving portion 25 and lighting the light receiving portion 25. Light is guided to the corresponding light emitting portion 21 through the light guiding portion 24, and then emitted through the light emitting portion 21. Since the light emitting portion 21 is divided into multiple sections, the light receiving portion 25 is recessed to form a U-shaped baffle wall, and the light is scattered to the corresponding light emitting portion 21 through the U-shaped baffle wall. The light can be emitted together or the light sources 4 at different positions can be used to control the light emitting effects of sections at different positions. Since the three light emitting portions 21 are separated from each other, accidental light crosstalk can be effectively prevented when a certain section emits light. The structure is compact and occupies little space.

[0054] The light receiving part 25 of this embodiment includes a straight surface 251, a curved surface 252 disposed at both ends of the straight surface 251, and a covering surface 253 disposed between the straight surface 251 and the curved surface 252. The straight surface 251, the curved surface 252, and the covering surface 253 are integrally formed and enclosed to form a semi-enclosed structure. Specifically, the straight surface 251, the curved surface 252, and the covering surface 253 are integrally formed and enclosed to form a semi-enclosed groove shape. The light receiving part 25 is located above the light source 4. The light source 4 emits light, and a large amount of light is covered and collected by the covering surface 253 to prevent the light from being directly emitted to the external environment, so as to effectively collect and conduct the light. Since the light guiding part 24 is connected between the light receiving part 25 and the light emitting part 21, a large amount of light is conducted to the light guiding part 24 via the covering surface 253, and then the light emitting part 21 is used to emit light uniformly.

[0055] The light guide 2 of this embodiment is made of organic photoconductive materials. Specifically, organic photoconductive materials such as polyvinyl carbazole, certain phthalocyanine complexes, certain azo compounds and certain squalane compounds are gradually replaced by low-toxic, cheap, flexible, easy-to-process organic photoconductive materials due to the high toxicity and high price of inorganic photoconductive materials, and have excellent light-guiding performance.

[0056] Generally, in the related art, the light guide and the housing are usually combined by assembly to connect the light guide and the housing. However, there is a gap between the housing and the light guide, which makes the overall sealing of the earphone poor and reduces the waterproof performance of the earphone.

[0057] Figure 7 A cross-sectional view of a light guide structure provided in an embodiment of the present application, Figure 8 for Figure 7 Magnified view of area A in the middle.

[0058] In the examples of this application, see Figure 7 and Figure 8 As shown, the shell 1 and the light guide 2 can be the same plastic part, and the molding materials of the shell 1 and the light guide 2 can be the same material with different physical properties, and the shell 1 and the light guide 2 can be made by laminating. Among them, physical properties refer to the color, transmittance and other properties of the material. For example, the shell 1 and the light guide 2 can be made of the same material but different colors and transmittances. For example, the shell 1 and the light guide 2 can both be made of polyamide (Polyamide; abbreviated as: PA), but the physical properties of the polyurethane material forming the shell 1 and the polyurethane material forming the light guide 2 are different. For example, according to the structural requirements and functional requirements of the shell 1 and the light guide 2, the polyurethane materials forming the shell 1 and the light guide 2 can have different colors and transmittances to meet the special requirements of the shell 1 and the light guide 2.

[0059] The injection molding process, also known as secondary injection molding, is a special plastic molding process. After a certain plastic raw material is molded in a primary plastic mold, the molded parts are taken out and placed in a secondary molding mold to be injected with the same or another plastic material again.

[0060] The structure of injection molding through the beer-jacketing process can make the shell 1 and the light guide 2 tightly combined. Moreover, the shell 1 and the light guide 2 are made of the same material, so the shell 1 and the light guide 2 can be fused with each other, making the shell 1 and the light guide 2 more tightly combined, which can effectively improve the sealing between the shell 1 and the light guide 2.

[0061] Continuing to refer to the figure, the light guide structure may further include a cladding layer 5, which may be covered on the outside of the shell 1, and a portion of the light guide 2 protruding from the shell 1 may be exposed outside the cladding layer 5, and the cladding layer 5 may be connected to the shell 1 and the light guide 2 by a beer-coating process.

[0062] For example, the shell 1 and the light guide 2 can be first injection molded together through a nesting process to connect the shell 1 and the light guide 2, so that the shell 1 and the light guide 2 become an integral injection molding structure, and then the injection molding structure formed by the shell 1 and the light guide 2 is placed in another mold, and then the material forming the coating layer 5 is injected into the mold to connect the coating layer 5 and the injection molding structure, thereby completing the overall injection molding operation of the coating layer 5, the shell 1 and the light guide 2.

[0063] The cladding layer 5 is formed with the shell 1 and the light guide 2 by a laminating process, so that the cladding layer 5 can be closely fitted with the shell 1 and the light guide 2, and the sealing between the cladding layer 5 and the light guide 2 can be effectively improved.

[0064] In the present application, the housing 1 and the light guide 2 are made of the same material with different physical properties and are made by a beer-coating method. The same materials can fit more closely together in the beer-coating process, so that the housing 1 and the light guide 2 can be tightly combined, which can effectively improve the sealing between the light guide 2 and the housing 1 and improve the waterproofness of the earphone. Moreover, by connecting the coating layer 5 with the housing 1 and the light guide 2 by a beer-coating process, the coating layer 5 and the light guide 2 can be tightly combined, so that the coating layer 5 and the light guide 2 have better sealing, thereby effectively improving the sealing and waterproofness of the earphone.

[0065] Fig. 9 A schematic structural diagram of a shell provided in an embodiment of the present application.

[0066] See also Figure 8 and Fig. 9As shown, a glue groove 17 may be provided on the housing 1, and the glue groove 17 may be located between the housing 1 and the light guide 2, and a sealant may be provided in the glue groove 17. The sealant may fill the pores or gaps between the housing 1 and the light guide 2, and may provide a better sealing effect between the housing 1 and the light guide 2. The sealant may effectively improve the sealing between the housing 1 and the light guide 2, and enhance the waterproofness between the housing 1 and the light guide 2.

[0067] Continue to see Figure 8 and Fig. 9 As shown, the glue groove 17 can be located on the side of the housing 1 facing the coating layer 5. In other words, it can be understood that the glue groove 17 is located on the outside of the housing 1 and is coated by the coating layer 5. For example, after the housing 1 and the light guide 2 are injection molded, the glue groove 17 between the housing 1 and the light guide 2 can be filled with sealant first, and then the coating layer 5 is injection molded. In this way, the coating layer 5 can coat the sealant inside, so that the sealant inside the coating layer 5 provides a seal between the housing 1 and the light guide 2.

[0068] This can effectively reduce or prevent the sealant from falling off, which helps to improve the stability and reliability of the sealant seal. In addition, the sealant is arranged in the coating layer 5, which can also improve the concealment of the sealant and help improve the aesthetics of the earphone exterior.

[0069] The housing 1 may be made of a non-light-absorbing and non-transparent material, for example, the molding material of the housing 1 may be made of a non-light-absorbing and non-transparent material. For example, the molding material of the housing 1 may be made of a light-colored color such as white or yellow, which does not absorb light. This can prevent the light emitted by the light source 4 from being absorbed by the housing 1, and can allow all the light emitted by the light source 4 to be projected into the light guide 2 and projected outward through the light guide 2. This can effectively increase the brightness of the light emitted by the light guide 2 and improve the light effect displayed by the light guide 2.

[0070] In addition, by making the shell 1 of opaque material, the light crosstalk caused by the light being projected outward through the shell 1 can be reduced or avoided, thereby affecting the overall lighting effect of the earphone, which helps to improve the overall lighting effect of the earphone.

[0071] The light guide 2 can be a transparent plastic part. For example, the molding material of the light guide 2 can be a transparent material. For example, the transparency of the molding material of the light guide 2 can be greater than 80%. This can effectively improve the light transmittance of the light guide 2, so that the light emitted by the light source 4 can be smoothly projected outward from the light guide 2, which can effectively improve the luminous effect of the light guide 2.

[0072] The covering layer 5 may be a silicone layer, that is, the molding material of the covering layer 5 may be silicone. Silicone is soft and has a certain elasticity. It can provide elastic buffering on the outside of the earphone shell 1, which can reduce or avoid damage to the earphone due to bumps during use, and is beneficial to improving the overall protection of the earphone.

[0073] Moreover, the silicone material has a good touch and can provide better comfort when the user wears it, helping to improve the user's wearing experience.

[0074] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

[0075] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0076] In the description of the present invention, it should be understood that the terms "including" and "having" and any variations thereof used herein are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0077] Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be directly connected or indirectly connected through an intermediate medium, and it can make the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances. In addition, the terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

[0078] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A light guide structure for a bone conduction headset, characterized in that: The invention comprises a shell, a light guide and a circuit board arranged in the shell, and a light source arranged in the circuit board, wherein the shell is provided with a recessed area, the light guide is embedded in the recessed area, a side of the light guide close to the circuit board is stopped and abutted against the light source, so that the light guide is clamped and installed between the shell and the circuit board, and a side of the light guide close to the shell is provided with a plurality of light emitting parts, and the plurality of light emitting parts are arranged at intervals along the length direction of the light guide, so that the plurality of light emitting parts are exposed from the shell; The light emitting portion is in a prism shape, a gap groove is provided between two adjacent light emitting portions, and the outer edges of the light emitting portions are all provided with chamfers.

2. The light guide structure of a bone conduction headset according to claim 1, characterized in that: The shell is provided with a through slot, and the through slots are provided in plurality and are recessed from the outer wall of the shell. A limiting block is provided between two adjacent through slots, and the light emitting portion is stopped and abutted against the limiting block through the gap slot.

3. The light guide structure of a bone conduction headset according to claim 2, characterized in that: The shell is provided with a receiving groove for accommodating the light guide, the receiving groove is recessed from the bottom surface of the shell, the shell is provided with a first positioning member and a second positioning member at intervals along the length direction of the receiving groove, and the first positioning member and the second positioning member are both used to stop the outer side of the circuit board from contacting.

4. The light guide structure of a bone conduction headset according to claim 3, characterized in that: The first positioning member includes a first positioning plate and a connecting block integrally formed with the first positioning plate. The connecting block is protruded from the inner wall of the shell. The connecting block is vertically arranged to the first positioning plate. The outer wall of the first positioning plate is in contact with the outer wall of the circuit board to position the circuit board between the first positioning plate and the light guide.

5. The light guide structure of a bone conduction headset according to claim 3, characterized in that: The second positioning member includes a second positioning plate, a reinforcing rib integrally formed with the second positioning plate, and a contact block protruding from the second positioning plate. The reinforcing rib protrudes from the inner wall of the shell, and the reinforcing rib is vertically arranged to the second positioning plate. The contact block is used to stop and contact the bottom wall of the light guide.

6. The light guide structure of a bone conduction headset according to claim 5, characterized in that: The circuit board is provided with a slot, which is recessed inward from the bottom wall of the circuit board. The abutment block is accommodated in the slot to position the circuit board between the second positioning plate and the light guide.

7. The light guide structure of a bone conduction headset according to claim 1, characterized in that: The light guide includes a light-guiding portion and a light-receiving portion recessed in the light-guiding portion, the light-receiving portion is arranged opposite to the light source and is used to receive the light emitted by the light source, the light-guiding portion is used to scatter and distribute the light to the light-emitting portion, and a plurality of light-emitting portions are convexly arranged on the light-guiding portion and are used to emit the light guided by the light-guiding portion.

8. The light guide structure of a bone conduction headset according to claim 7, characterized in that: The light receiving part comprises a straight surface, curved surfaces arranged at two ends of the straight surface, and a covering surface arranged between the straight surface and the curved surface. The straight surface, the curved surface, and the covering surface are integrally formed and enclosed to form a semi-enclosed structure.

9. A light guide structure for a bone conduction headset according to any one of claims 1 to 8, characterized in that: The shell and the light guide are the same plastic parts, and the shell and the light guide are connected by a sleeve method.

10. The light guide structure of a bone conduction headset according to claim 9, characterized in that: It also includes a covering layer, which is covered on the outside of the shell, and the part of the light guide protruding from the shell is exposed outside the covering layer, and the covering layer is connected to the shell and the light guide by a sheathing method.

11. The light guide structure of a bone conduction headset according to claim 10, characterized in that: The shell is provided with a glue groove, the glue groove is located between the shell and the light guide, and the glue groove contains sealing glue.

12. The light guide structure of a bone conduction headset according to claim 11, characterized in that: The glue groove is located on a side of the shell facing the coating layer.

13. The light guide structure of a bone conduction headset according to claim 9, characterized in that: The shell is a non-light-absorbing and non-transparent plastic part.

14. The light guide structure of a bone conduction headset according to claim 9, characterized in that: The light guide is a transparent plastic part.

15. The light guide structure of a bone conduction headset according to claim 10, characterized in that: The coating layer is a silica gel layer.

16. The light guide structure of a bone conduction headset according to claim 1, characterized in that: The light guide is made of organic light-conducting material.

17. A bone conduction headset, characterized in that: A light-guiding structure for a bone conduction headset comprising any one of claims 1 to 16.

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