Open type earphone

Abstract

[Problem] To provide an open-type earphone which does not give a sense of oppression to the ears, makes it easy to hear ambient sound, has high sound insulation properties, and does not leak sound. [Solution] An open earphone (1) is provided with: an earphone main body (2) in which a speaker (5) is built; an acoustic conduit 3 that extends obliquely from the earphone body 2 and is inserted into the external auditory canal 11 of the ear; and earrings (4) attached to the outer surface of the sound conduit (3) in which a first communication path (6) for communicating the speaker (5) with the external auditory canal (11) of the ear and a groove (7) for communicating the atmosphere with the external auditory canal of the ear are formed, and the sound conduit (3) is inclined at an angle of 50-70 DEG with respect to the earphone body (2). The ear ring (4) is formed by integrally connecting two rings (4A, 4B) made of an elastic material, and one end side of each of the two rings (4A, 4B) in the length direction is mounted on the outer side surface of the sound guide tube (3).

Description

Technical Field

[0001] The present invention relates to an open earphone capable of receiving ambient sounds. Background Art

[0002] Generally, sound vibrations transmitted through the air are transferred to the eardrum in the ear, and the vibrations of the eardrum are transmitted to the cochlea through three ossicles located inside the eardrum. The cochlea has lymph fluid, and the vibrations of this lymph fluid are converted into electrical signals and transmitted to the auditory nerve, and the brain recognizes this electrical signal as sound.

[0003] An earphone worn on a user's ear reproduces sound by applying an audio signal to a speaker disposed close to the ear, and such earphones can be roughly classified into two types: in-ear type and earplug type.

[0004] An in-ear earphone (for example, refer to Patent Document 1) is used by hanging on a part called the concha at the entrance of the ear, and has the advantages of no sense of oppression and easy to hear ambient sounds. On the other hand, an earplug type earphone (for example, refer to Patent Document 2) is used by inserting an earplug type earpiece into the ear, and thus has the advantages of high sound insulation and no sound leakage.

[0005] Prior Art Documents

[0006] Patent Documents

[0007] Patent Document 1: Japanese Unexamined Patent Application Publication No. 2006-222492

[0008] Patent Document 2: Japanese Unexamined Patent Application Publication No. 2019-145962. Summary of the Invention

[0009] Problems to be Solved by the Invention

[0010] However, in-ear earphones have the disadvantages of low sound insulation and easy sound leakage. On the other hand, earplug type earphones (canal type earphones) have the disadvantages of strong pressure on the ear and difficulty in hearing ambient sounds because the earpiece is inserted deep into the ear.

[0011] The present invention has been made in view of the above problems, and an object thereof is to provide an open earphone that has no pressure on the ear, is easy to hear ambient sounds, and has high sound insulation and no sound leakage.

[0012] Means for Solving the Problems

[0013] In order to solve the above problems, the present invention provides an open earphone, comprising: an earphone body with a speaker built therein; a sound conduit that extends obliquely from the earphone body and is inserted into the ear canal of the ear; and an earring mounted on the outer side surface of the sound conduit. The sound conduit is formed with a first communication path that connects the speaker to the ear canal of the ear and a second communication path that connects the atmosphere to the ear canal of the ear. The inclination angle of the sound conduit relative to the earphone body is 50° to 70°. The earring is formed by integrally connecting two rings made of an elastic material, and one end side in the length direction of the two rings is mounted on the outer side surface of the sound conduit.

[0014] The present invention also provides an open earphone, in which, in the above open earphone, the earring is detachably mounted on the sound conduit.

[0015] The present invention also provides an open earphone, in which, in the above open earphone, the length in the length direction of the earring is 12 to 20 mm.

[0016] The present invention also provides an open earphone, in which, in the above open earphone, the inclination angle of the earring relative to the sound conduit is 60° to 100°.

[0017] The present invention also provides an open earphone, in which, in the above open earphone, the length on the central axis of the sound conduit is 5 mm to 13 mm.

[0018] The present invention also provides an open earphone, in which, in the above open earphone, the second communication path is formed by a groove formed on the outer side surface of the sound conduit.

[0019]

Advantages of the Invention

[0020] According to the present invention, since the sound conduit is formed with a first communication path that connects the speaker to the ear canal of the ear and a second communication path that connects the atmosphere to the ear canal of the ear, the surrounding ambient sound is introduced into the ear canal of the user through the second communication path. Therefore, the user can simultaneously hear the speaker sound introduced into the ear canal through the first communication path and the surrounding ambient sound introduced into the ear canal through the second communication path.

[0021] In addition, in the present invention, when sound from the speaker is about to escape into the atmosphere and sound leakage occurs, it is necessary to further pass through the second communication path after passing through the first communication path. The sound guide tube of the open earphone of the present invention is shaped to extend obliquely from the earphone body and be inserted into the ear canal of the ear. Therefore, the path for the sound from the speaker to escape into the atmosphere becomes longer. Thus, it is possible to prevent the sound from the speaker from leaking to the outside (sound leakage). In addition, since the sound from the speaker is reliably introduced into the ear canal through the sound guide tube, the user can clearly hear the sound from the speaker even in a place with loud ambient sound, and at the same time, it is possible to prevent touch noise or the echo of the user's own voice.

[0022] In addition, for the open earphone of the present invention, an earring is mounted on the outer side surface of the sound guide tube. The earring is formed by integrally connecting two rings made of an elastic material, and one end side in the length direction of the two rings is mounted on the outer side surface of the sound guide tube. Therefore, when the open earphone of the present invention is worn, one end of the earring abuts against the tragus of the ear, and at the same time, the other side abuts against the inner wall of the concha, more specifically, against the inner wall of the cymba conchae. The sound guide tube is clamped between the tragus of the ear and the inner wall of the concha by the earring. Thus, it is possible to obtain high wearing stability while the sound guide tube does not press on the ear, giving the user a comfortable wearing feeling.

[0023] Therefore, according to the open earphone of the present invention, it is possible to eliminate the respective disadvantages of in-ear earphones and earplug earphones while only enjoying the advantages of the two types of earphones. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a side view of an embodiment of the open earphone of the present invention;

[0025] Figure 2 is a perspective view of an embodiment of the open earphone of the present invention as viewed obliquely from above;

[0026] Figure 3 is a perspective view of an embodiment of the open earphone of the present invention as viewed obliquely from below;

[0027] Figure 4 is a view of an embodiment of the open earphone of the present invention as viewed from above;

[0028] Figure 5 is a view of an embodiment of the open earphone of the present invention as viewed from the front;

[0029] Figure 6 is a view of an embodiment of the open earphone of the present invention as viewed from the rear;

[0030] Figure 7 is a view of an embodiment of the open earphone of the present invention as viewed from below;

[0031] Figure 8It is a cross-sectional side view of a modified example of the open earphone of the present invention;

[0032] Figure 9 It is a cross-sectional view of the user's ear part showing the usage state of a modified example of the open earphone of the present invention;

[0033] Figure 10 It is a diagram showing the names of the respective parts of the auricle. Detailed implementation manners

[0034] Hereinafter, the embodiments of the present invention will be described based on the drawings. Figure 1 It is a side view of the open earphone 1 of the present embodiment. Figure 2 It is a perspective view of the open earphone 1 of the present embodiment seen from obliquely above. Figure 3 It is a perspective view of the open earphone 1 of the present embodiment seen from obliquely below. Figure 4 It is a view of the open earphone 1 of the present embodiment seen from above. Figure 5 It is a view of the open earphone 1 of the present embodiment seen from the front. Figure 6 It is a view of the open earphone 1 of the present embodiment seen from the rear. Figure 7 It is a view of the open earphone 1 of the present embodiment seen from below.

[0035] In addition, Figure 8 and Figure 9 show a modified example of the open earphone 1 of the present embodiment. Figure 8 It is a side cross-sectional view of a modified example of the open earphone 1 of the present embodiment. Figure 9 It is a cross-sectional view of the user's ear part showing the usage state of a modified example of the open earphone 1 of the present embodiment. Figure 8 and Figure 9 The modified examples shown, compared with the Figures 1 - 7 embodiment shown, have different angles of the bottom surface 3A of the sound guide tube 3 and the mounting angles of the earring 4. Other than that, the parts are configured substantially the same as the Figures 1 - 7 embodiment shown. When describing the open earphone 1 of the present embodiment, regarding the common parts with the Figure 8 and Figure 9 modified examples shown, reference can also be made to the Figure 8 and Figure 9 description.

[0036] In the following description, Figure 1 the arrow directions shown are the "front-back" direction and the "up-down" direction respectively.

[0037] The "up and down" direction is the direction in which the open earphone 1 is connected to the user's ear when the open earphone 1 is worn on the ear. In other words, it is the direction in which the open earphone 1 is inserted into the ear or removed from the ear. The direction from the open earphone 1 towards the user's ear, that is, the direction in which the open earphone 1 is inserted into the ear, is set as the "down" direction, and the direction from the user's ear towards the open earphone 1, that is, the direction in which the open earphone 1 is removed from the ear, is set as the "up" direction.

[0038] The "front and back" direction is a direction perpendicular to the "up and down" direction, and is the direction in which the position where the open earphone 1 abuts against the tragus of the user's ear and the position where it abuts against the inner wall of the concha are connected when the open earphone 1 is worn on the ear. The direction from the open earphone 1 towards the tragus of the ear is set as the "back" direction, and the direction from the open earphone 1 towards the inner wall of the concha is set as the "front" direction.

[0039] Here, the names of each part of the auricle are shown in 10. As Figure 10 shown, the tragus (also called the earlobe) is a protrusion on the facial side at the entrance of the external auditory canal. The curved part on the outer side of the auricle is called the helix. The concha is composed of Figure 10 the cymba conchae and the cavum conchae shown. The cymba conchae is a depression adjacent to the entrance of the external auditory canal. The cavum conchae is a depression that is more lateral than the cymba conchae when viewed from the entrance of the external auditory canal and is separated from the cymba conchae by a part of the helix. The open earphone 1 of the present invention also abuts against the inner wall of the cavum conchae in the concha. In this specification, the "inner wall of the concha" or the "inner wall of the cavum conchae" refers to the wall that forms the edge of the depression constituting the concha or the cavum conchae.

[0040] The open earphone 1 of the present embodiment, as Figures 1 - 7 shown, includes a headphone body 2, a sound conduit 3, and an earring 4.

[0041] The headphone body 2 is a housing that is long in the front and back direction and has an oval shape when viewed from above. The headphone body 2 is a housing that can be divided in the up and down direction and is formed by joining and integrating an upper shell 2A and a lower shell 2B. The headphone body 2 at least incorporates a speaker 5. In the headphone body 2, in addition to the speaker 5, various electronic components and a substrate on which they are mounted are also incorporated.

[0042] It should be noted that in the present invention, the headphone body is not particularly limited to this embodiment as long as it is a housing capable of incorporating a speaker. In the present invention, the headphone body can, for example, be a housing that can be divided in the front and back direction. In addition, in the present invention, the headphone body is not limited to the oval shape that is long in the front and back direction, and its shape when viewed from above can be circular, or can be any shape such as a square, a rectangle, or a polygon.

[0043] As Figure 8As shown, the speaker 5 is disposed at a position directly above the sound conduit 3 within the earphone main body 2 and does not contact the user's ear. By disposing the speaker 5 at such a position, even if the diameter of the speaker 5 is made very large in order to achieve good sound quality of the speaker 5, the speaker 5 will not become an obstacle to the ear. It should be noted that in the present embodiment, the speaker 5 is horizontally housed within the earphone main body 2, but the speaker 5 may also be vertically disposed and housed.

[0044] The sound conduit 3 is a cylindrical member that extends obliquely from the earphone main body 2 and is inserted into the inner ear canal of the user's ear at a position deeper than the tragus. The sound conduit 3 is formed to extend obliquely downward and rearward from the bottom of the front end portion (front end) of the earphone main body 2. The inclination angle θ1 of the sound conduit 3 with respect to the earphone main body 2 ( Figure 1 as shown) can be set, for example, to θ1 = 60°, but in the present invention, the inclination angle θ1 is not limited thereto, and can be set, for example, to 60° ± 10° (50° to 70°). If the inclination angle θ1 is 50° to 70°, the open earphone 1 can be more reliably fitted to the user's ear, and higher wearing stability can be obtained.

[0045] In the present embodiment, the sound conduit 3 has a cylindrical shape and can guide the sound of the speaker 5 into the ear canal. It should be noted that in the present invention, the sound conduit is not limited thereto, and can be an oval cylindrical shape, or a polygonal cylindrical shape. The cross-sectional shape of the sound conduit can be a shape close to the shape of the ear canal, such as a circular shape, an elliptical shape, and a partial bow shape (kamaboko type). In addition, the sound conduit can be configured to gradually taper from the bottom to the top of the earphone main body, or can be configured to have a certain thickness.

[0046] In the present embodiment, the bottom surface 3A of the sound conduit 3, as Figure 1 shown, is formed parallel to the cross-section of the sound conduit 3. It should be noted that in the present invention, the bottom surface of the sound conduit is not limited thereto, and can be at any angle. For example, as Figure 8 and Figure 9 shown in the deformation example, it can be formed parallel to the bottom surface of the earphone main body.

[0047] The length of the sound conduit 3 is such that it can be inserted deeper into the external auditory canal of the user's ear than the tragus. The length from the bottom surface of the headphone body 2 to the tip of the sound conduit 3 on the central axis of the sound conduit 3 is not particularly limited as long as it can introduce the speaker sound into the external auditory canal of the user's ear. For example, if it is 5 mm or more, the speaker sound can be reliably introduced into the external auditory canal of the user's ear. In addition, if the length on the central axis of the sound conduit 3 is, for example, 8 mm or more, the speaker sound can be introduced into the external auditory canal of the user's ear more reliably. The length on the central axis of the sound conduit 3 is not particularly limited and can be, for example, 13 mm or less, so as to give a comfortable wearing feeling without causing a sense of oppression to the user. In addition, if the length on the central axis of the sound conduit 3 is, for example, 10 mm or less, a more comfortable wearing feeling can be given without further causing a sense of oppression to the user.

[0048] It should be noted that in the present invention, the length of the sound conduit can be a length that is inserted from the point of contact with the tragus in the external auditory canal of the user's ear to a depth of at least 10 mm or more. If it is this length, when worn on a standard adult ear, the speaker sound can be reliably introduced into the external auditory canal of the user's ear.

[0049] In the present embodiment, the headphone body 2 (the upper case 2A and the lower case 2B) and the sound conduit 3 are made of a hard resin such as high-rigidity ABS resin. It should be noted that in the present invention, the headphone body and the sound conduit are not limited to the present embodiment and can be made of a hard material. Hard materials can use, for example, not only ABS resin, but also various resins such as polypropylene and polystyrene. In addition, the sound conduit 3 can be integrally formed with the headphone body 2 (for example, the lower case 2B) or can be formed separately.

[0050] In the open-type headphone of the present invention, even if the sound conduit is made of a hard material, it is clamped between the tragus of the ear and the inner wall of the concha by the earring mounted on the sound conduit, so it can be stably worn. In addition, in the open-type headphone of the present invention, the sound conduit does not need to completely cover the inside of the external auditory canal, and a gap can also be generated between the sound conduit and the inner wall of the external auditory canal. Therefore, the open-type headphone of the present invention does not require a component such as an earpiece that is elastically deformed to enter deep into the ear for fixation at the tip of the earplug-type headphone, so a comfortable wearing feeling can be given without pressing the ear.

[0051] As Figure 8 and Figure 9 shown, a circular hole-shaped first communication path 6 is formed in the axial center portion of the sound conduit 3. The first communication path 6 is in a state where the open-type headphone 1 is worn on the ear by the user, so that the speaker 5 built in the headphone body 2 communicates with the external auditory canal 11 of the ear (refer to Figure 9)A connected passageway. The upper end of the first connecting passage 6 opens inside the earphone main body 2, and the lower end of the first connecting passage 6 opens inside the ear canal 11 of the ear.

[0052] In addition, on the outer side surface of the front side ( Figure 8 the left side) of the sound conduit 3, a groove (second connecting passage) 7 is formed in the longitudinal direction of the sound conduit 3. The groove 7 is a passageway that allows the atmosphere to communicate with the inside of the ear canal 11 of the ear when worn. As Figure 3 shown, the groove 7 is a linear groove formed in the longitudinal direction of the sound conduit 3 from directly below the earring 4 installation position of the sound conduit 3 to the top end of the sound conduit 3. By forming the groove 7, when the user wears the open earphone 1, a gap that serves as the second connecting passage is generated between the open earphone 1 and the ear canal. By forming the groove 7, the user can simultaneously hear the speaker sound introduced into the ear canal through the first connecting passage 6 and the ambient sound around the ear canal 11 introduced through the second connecting passage formed by the groove 7.

[0053] It should be noted that in the present invention, the groove can be formed at any position on the outer side surface of the sound conduit. The groove, for example, can be formed from a position higher than the earring installation position on the outer side surface of the sound conduit to the top end, or can be formed from a position close to the bottom surface of the earphone main body to the top end of the sound conduit. In addition, in the present invention, the groove can also be formed on the outer side surface other than the front side surface of the sound conduit.

[0054] In addition, in the present invention, the second connecting passage is not limited to the groove as in this embodiment. For example, it can also be a passageway formed separately from the first connecting passage on the side surface portion of the sound conduit. When the second connecting passage is a passageway formed in the sound conduit, the upper opening portion thereof can be a hole formed in the front side surface portion of the sound conduit and opening to the atmosphere, and the lower opening portion can be a hole formed in the bottom surface of the sound conduit and opening in the ear canal of the ear.

[0055] When the second connecting passage is a passageway formed in the sound conduit, the upper opening thereof can be formed at any position on the front side surface portion of the sound conduit 3. The upper opening portion of the second connecting passage can be located at any position either lower or upper than the earring installation position of the sound conduit. In addition, the upper opening portion of the second connecting passage can be formed at a position close to the bottom surface of the earphone main body.

[0056] The earring 4 is a component formed by integrally connecting two rings 4A and 4B made of an elastic material and is installed on the outer side surface of the sound conduit 3. The two rings 4A and 4B are formed and integrally connected such that the ring 4B protrudes outward from the front side portion of the ring 4A. The earring 4 is installed in such a way that the rear side portion of the ring 4A on one end side in the longitudinal direction surrounds the outer side surface of the sound conduit 3 in the circumferential direction. The earring 4 projects forward from the sound conduit 3 ( Figure 1It is installed in a way that extends (to the left side). In this embodiment, the rings 4A and 4B are substantially circular, but there is no particular limitation in the present invention as long as it is a shape surrounded by curves or straight lines. For example, it can be an ellipse, a polygon, etc. The earring 4 is formed by connecting and integrating two rings 4A and 4B, which improves the elasticity of the earring 4 and enables it to elastically deform flexibly according to the shape of the user's ear, thus achieving the effect of being easily adaptable to any ear.

[0057] As shown in Figure 9 When the user wears the open earphone 1, one end of the earring 4 abuts against the tragus 12 of the ear, and the other end abuts against the inner wall 13 of the concha. Specifically, in the earring 4, the rear side portion (one end) of the ring 4A that abuts against the side surface of the rear side of the sound conduit 3 abuts against the tragus 12 of the ear, and the top end (the other end) of the ring 4B that extends forward abuts against the inner wall 13 of the concha, more specifically, the inner wall of the cymba conchae. Thus, the sound conduit 3 is clamped between the tragus 12 of the ear and the inner wall 13 of the concha by the earring 4, and high wearing stability can be obtained.

[0058] The length in the longitudinal direction of the earring 4, that is, the length from the portion of the ring 4A where the sound conduit 3 is installed to the top end of the ring 4B that protrudes forward, can be appropriately set according to the size of the ear, etc., and there is no particular limitation. However, from the perspective of wearing stability, it can be, for example, 12 to 20 mm. In addition, if the length in the longitudinal direction of the earring 4 is, for example, 13 to 18 mm, the wearing stability can be further improved.

[0059] The inclination angle θ2 of the earring 4 with respect to the sound conduit 3 ( Figure 1 and Figure 8 shown) is not particularly limited. However, if it is, for example, 60 to 100°, the wearing stability can be further improved. In addition, if the inclination angle θ2 of the earring 4 with respect to the sound conduit 3 is, for example, 60 to 90°, the wearing stability can be further improved. For example, the inclination angle θ2 can be approximately 90° as shown in Figure 1 or less than 90° as shown in the modified example of Figure 8 .

[0060] The earring 4 can be detachable from the sound conduit 3 or can be integrally formed with the sound conduit 3. In the case of being detachable, it can also be configured to be installed on the sound conduit 3 by embedding the inner peripheral side of the ring 4A into the installation position on the side surface of the rear side of the sound conduit 3. In addition, in the present invention, the earring is not limited to the above form, and it can also be configured to form a hole in the inner peripheral portion of the ring 4A with a shape and size substantially the same as the cross-section of the sound conduit, and the sound conduit can be installed on the sound conduit by passing through and embedding the hole.

[0061] In the present invention, when the earring is detachable, a variety of earrings of different sizes can be prepared, and the user can select an earring of a suitable size according to the size of their own ears.

[0062] The position where the earring 4 is installed on the sound conduit 3 can be any position between the bottom surface of the headphone body 2 and the top end of the sound conduit 3. In the sound conduit 3, the length from the front end of the headphone body 2 to the installation position of the earring 4 and the length from the installation position of the earring 4 to the top end of the sound conduit 3 are not particularly limited. For example, if it is 1:9 to 9:1, the open earphone 1 can be firmly attached and worn on the user's ear. In the sound conduit 3, the length from the front end of the headphone body 2 to the installation position of the earring 4 and the length from the installation position of the earring 4 to the top end of the sound conduit 3 are preferably 2:3 to 2:5, so that the open earphone 1 can be firmly attached and worn on the user's ear.

[0063] The earring 4 is made of an elastic material, that is, a material that can be elastically deformed. The earring 4 can be made of, for example, soft silicone, elastomer, and rubber.

[0064] It should be noted that the above description has been made on the structure of the open earphone 1 worn on one (left or right) ear of the user. However, the structure of the open earphone 1 worn on the other (right or left) ear is exactly the same as or symmetrical to the structure of the above one, so the illustration and description thereof are omitted.

[0065] Here, in Figure 9 the state in which the open earphone 1 of the present embodiment is worn on the user's ear is shown. The open earphone 1 is worn in a direction in which the end portion on the rear side of the earring 4 (ring 4A) abuts against the tragus (earlobe) 12 of the ear. That is, by inserting the sound conduit 3 into the ear canal 11 of the ear, the open earphone 1 is worn on the user's ear. At this time, however, the end portion on the rear side of the earring 4 (ring 4A) abuts against the tragus 12 of the ear. In this way, the earring 4 is pressed by the tragus 12, so the end portion on the front side of the earring 4 (ring 4B) is pressed against the inner wall 13 of the concha, more specifically, the inner wall of the cymba conchae, and the ring 4B is elastically deformed and bent into an arc shape. Thereby, by clamping the earring 4 between the tragus 12 of the ear and the inner wall 13 of the concha, the sound conduit 3 is stably clamped between the tragus 12 of the ear and the inner wall 13 of the concha through the earring 4. Therefore, the open earphone 1 is firmly worn on the user's ear in a fitting state.

[0066] As Figure 9As shown, for the open earphone 1 of the present embodiment, since the sound conduit 3 is clamped between the tragus 12 of the ear and the inner wall 13 of the concha by the earring 4, it is possible to form the sound conduit 3 with a hard material while making its thickness thinner than that of the external auditory canal. Therefore, different from the conventional earplug-type earphones that are worn by putting earpieces installed on the sound conduit into the ear, the sound conduit 3 does not compress the external auditory canal 11. That is, the sound conduit 3 can be stably held in the external auditory canal without compressing the inner wall of the external auditory canal 11 through the earring 4. Therefore, the user does not feel a sense of compression and can obtain a comfortable wearing feeling.

[0067] As described above, when the open earphone 1 is properly worn on the left and right ears of the user, the sound (speaker sound) emitted from the speaker 5, as shown by the arrow a in Figure 9 is transmitted to the cochlea through the first communication path 6 formed in the central part of the sound conduit 3. The vibration of the sound transmitted to the cochlea becomes the vibration of the endolymph in the cochlea, and this vibration is converted into an electrical signal, which is transmitted to the brain through the auditory nerve and recognized as sound. In addition, the surrounding ambient sound, as shown by the arrow b in Figure 9 is transmitted to the cochlea through the groove 7 formed in the sound conduit 3 via the eardrum. The vibration of the endolymph in the cochlea is converted into an electrical signal and transmitted to the brain through the auditory nerve and recognized as sound.

[0068] In addition, in the open earphone 1 of the present embodiment, since the sound conduit 3 is formed with the first communication path 6 that connects the speaker 5 to the external auditory canal 11 of the ear and the groove 7 that connects the atmosphere to the external auditory canal 11 of the ear, the surrounding ambient sound is introduced into the external auditory canal 11 of the user's ear through the second communication path formed by the groove 7. Therefore, the user can simultaneously hear the speaker sound introduced into the external auditory canal through the first communication path 6 and the surrounding ambient sound introduced into the external auditory canal 11 through the groove 7. Thus, when the speaker sound is about to escape into the atmosphere, it needs to pass through the first communication path 6 and further through the groove 7 as the second communication path, so its path becomes longer, preventing the leakage (sound leakage) of the speaker sound to the outside. Further, even in a place with a large ambient sound, the speaker sound can be clearly heard, and no touch noise or the user's own voice can be heard.

[0069] In addition, the open earphone 1 of the present embodiment is clamped in a state where the sound conduit 3 is inserted deeper into the external auditory canal of the user's ear than the tragus. Therefore, the speaker sound is reliably introduced into the external auditory canal 11 through the sound conduit 3, so the user can clearly hear the speaker sound even in a place with a large ambient sound, and at the same time, the echo of touch noise or the user's own voice can be prevented.

[0070] In addition, when the earring 4 is configured to be detachable from the sound conduit 3 (earphone main body 2), the earring 4 can be replaced with an earring suitable for the size and shape of each part of the user's ear and the external auditory canal 11.

[0071] Therefore, the open earphone 1 according to the present embodiment can eliminate the respective disadvantages of in-ear earphones and earplug earphones while only enjoying the advantages of the two types of earphones.

[0072] Of course, the application of the present invention is not limited to the above embodiments, and various modifications can be made within the scope of the technical idea described in the claims, the specification, and the drawings.

[0073] Reference Signs

[0074] 1: Open earphone, 2: Earphone main body, 2A: Upper shell, 2B: Lower shell, 3: Sound conduit, 4: Earring, 4A, 4B: Rings, 5: Speaker, 6: First communication path, 7: Groove (second communication path), 11: External auditory canal, 12: Tragus, 13: Inner wall of concha.

Claims

1. An open earphone, characterized in that, Comprising: An earphone body with a built-in speaker; A sound conduit that extends obliquely from the earphone body and is inserted into the ear canal of the ear; and An earring mounted on the outer side of the sound conduit, The sound conduit is formed with a first communication path that connects the speaker to the ear canal of the ear and a second communication path that connects the atmosphere to the ear canal of the ear, The inclination angle of the sound conduit with respect to the earphone body is 50° to 70°, The earring is formed by integrally connecting two rings made of an elastic material, and one end side in the length direction of the two rings is mounted on the outer side of the sound conduit.

2. The open earphone according to claim 1, wherein The earring is detachably mounted on the sound conduit.

3. The open earphone according to claim 1 or 2, characterized in that, The length in the length direction of the earring is 12 to 20 mm.

4. The open earphone according to claim 1 or 2, characterized in that, The inclination angle of the earring with respect to the sound conduit is 60° to 100°.

5. The open earphone according to claim 1 or 2, characterized in that, The length on the central axis of the sound conduit is 5 mm to 13 mm.

6. The open earphone according to claim 1 or 2, characterized in that, The second communication path is constituted by a groove formed on the outer side of the sound conduit.

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