JP7427171B1 - open earphones - Google Patents

Abstract

[Problem] To provide an open earphone that does not give a feeling of pressure on the ears, makes it easy to hear surrounding environmental sounds, and has high sound insulation properties so that no sound leaks. [Solution] The open type earphone 1 includes an earphone body 2 with a built-in speaker 5, an acoustic duct 3 that extends diagonally from the earphone body 2 and is inserted into the external auditory canal 11 of the ear, and is attached to the outer surface of the acoustic duct 3. The acoustic duct 3 includes a first communicating path 6 that communicates between the speaker 5 and the external auditory canal 11 of the ear, and a groove 7 that communicates the atmosphere with the external auditory canal of the ear. The acoustic duct 3 has an inclination angle of 50° to 70° with respect to the earphone body 2, and the earring 4 is constructed by connecting and integrating two rings 4A and 4B made of an elastic material. , one longitudinal end of the two rings 4A, 4B is attached to the outer surface of the acoustic duct 3. [Selection diagram] Figure 1

Description

The present invention relates to open earphones that can also take in surrounding environmental sounds.

Normally, sound vibrations transmitted by air are transmitted to the eardrum in the ear, and vibrations of the eardrum are transmitted to the cochlea via three ossicles located in the eardrum. The cochlea contains lymph fluid, and the vibrations of this fluid are converted into electrical signals and transmitted to the auditory nerve, which the brain recognizes as sound.

By the way, some earphones that are worn in the user's ears reproduce sound by applying an audio signal to a speaker placed close to the ear. ) There are two types.

In-ear earphones (see, for example, Patent Document 1) are used by being hooked onto a part called the concha at the entrance of the ear, and have the advantage of not feeling pressured and making it easy to hear surrounding environmental sounds. There is. On the other hand, canal-type earphones (see, for example, Patent Document 2) have the advantage of providing high sound insulation and preventing sound leakage because they are used by inserting earplug-type earpieces into the ears. ing.

JP2006-222492A Japanese Patent Application Publication No. 2019-145962

However, inner-ear earphones have the disadvantage of poor sound insulation and easy sound leakage. On the other hand, canal earphones have the disadvantage that because the earpiece is inserted deep into the ear, there is a strong feeling of pressure on the ear, making it difficult to hear surrounding environmental sounds.

The present invention was made in view of the above problems, and its purpose is to provide open earphones that do not put pressure on the ears, make it easy to hear surrounding environmental sounds, and have high sound insulation properties so that no sound leaks. There is a particular thing.

In order to solve the above problems, the present invention includes an earphone body with a built-in speaker, an acoustic duct that extends diagonally from the earphone body and is inserted into the external auditory canal of the ear, and an earring that is attached to the outer surface of the acoustic duct. The acoustic duct is formed with a first communicating path that communicates the speaker with the external auditory canal of the ear, and a second communicating path that communicates the atmosphere with the external auditory canal of the ear, The angle of inclination of the acoustic duct with respect to the earphone body is 50° to 70°, and the earring is constructed by connecting and integrating two rings made of elastic material, and one longitudinal end of the two rings is attached to the acoustic duct. To provide an open type earphone attached to an outer surface.

The present invention also provides an open earphone in which the earring is detachably attached to the acoustic duct.

The present invention also provides the above-mentioned open-type earphone, wherein the length of the earring in the longitudinal direction is 12 to 20 mm.

The present invention also provides the above open earphone, wherein the earring has an inclination angle of 60° to 100° with respect to the acoustic duct.

The present invention also provides the above-mentioned open-type earphone, in which the length of the acoustic duct on the central axis is 5 mm to 13 mm.

The present invention also provides the open type earphone described above, in which the second communication path is constituted by a groove formed on the outer surface of the acoustic duct.

According to the present invention, since the acoustic duct is formed with the first communication path that communicates the speaker and the external auditory canal of the ear, and the second communication path that communicates the atmosphere and the external auditory canal of the ear, the surrounding environment Sound is introduced into the external auditory canal of the user's ear 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 environmental sound introduced into the ear canal through the second communication path.

Furthermore, in the present invention, if the speaker sound escapes into the atmosphere and causes sound leakage, it is necessary to further pass through the second communication path after passing through the first communication path. The acoustic duct of the open earphone of the present invention has a shape that extends diagonally from the earphone body and is inserted into the external auditory canal of the ear, so that the path for the speaker sound to escape into the atmosphere becomes long. Therefore, leakage of speaker sound to the outside (sound leakage) can be prevented. In addition, since the speaker sound is reliably introduced into the ear canal through the acoustic duct, the user can hear the speaker sound clearly even in places with loud environmental sounds, and can avoid touch noise and the user's own voice. You can prevent it from getting lost.

Further, in the open earphone of the present invention, earrings are attached to the outer surface of the acoustic duct. The earring is constructed by connecting and integrating two rings made of elastic material, and one longitudinal end of the two rings is attached to the outer surface of the acoustic duct. Therefore, when wearing the open earphone of the present invention, one end of the earring comes into contact with the tragus of the ear, and the other end comes into contact with the inner wall of the concha, more specifically, the inner wall of the concha. , an acoustic duct is sandwiched between the ear tragus and the inner wall of the concha by earrings. Therefore, high wearing stability is obtained, and the acoustic duct does not put pressure on the ears, giving the user a comfortable wearing feeling.

Therefore, according to the open type earphone according to the present invention, it is possible to eliminate the disadvantages of the inner ear type earphone and the canal type earphone while enjoying only the merits of both earphones.

FIG. 1 is a side view of an embodiment of an open earphone according to the present invention. 1 is a perspective view of an embodiment of an open earphone according to the present invention, viewed diagonally from above. FIG. 1 is a perspective view of an embodiment of an open earphone according to the present invention, viewed diagonally from below. 1 is a top view of an embodiment of an open earphone according to the present invention; FIG. 1 is a front view of an embodiment of an open earphone according to the present invention. FIG. FIG. 1 is a diagram of an embodiment of an open earphone according to the present invention, viewed from the rear. 1 is a bottom view of an embodiment of an open earphone according to the present invention. FIG. FIG. 7 is a cutaway side view of a modified example of the open earphone according to the present invention. FIG. 7 is a cutaway cross-sectional view of a user's ear portion showing a usage state of a modified example of the open earphone according to the present invention. It is a figure showing the name of each part of an auricle.

Embodiments of the present invention will be described below based on the accompanying drawings. FIG. 1 is a side view of an open earphone 1 according to the present embodiment. FIG. 2 is a perspective view of the open earphone 1 according to the present embodiment, viewed diagonally from above. FIG. 3 is a perspective view of the open earphone 1 according to the present embodiment, viewed diagonally from below. FIG. 4 is a top view of the open earphone 1 according to the present embodiment. FIG. 5 is a diagram of the open earphone 1 according to the present embodiment viewed from the front. FIG. 6 is a diagram of the open earphone 1 according to the present embodiment viewed from the rear. FIG. 7 is a bottom view of the open earphone 1 according to the present embodiment.

Further, a modified example of the open type earphone 1 of this embodiment is shown in FIGS. 8 and 9. FIG. 8 is a cutaway side view of a modified example of the open earphone 1 according to the present embodiment. FIG. 9 is a broken sectional view of a user's ear portion showing a usage state of a modified example of the open earphone 1 according to the present embodiment. The modified example shown in FIGS. 8 and 9 is different from the embodiment shown in FIGS. 1 to 7 in the angle of the bottom surface 3A of the acoustic duct 3 and the angle at which the earring 4 is attached, but the other parts are different from the embodiment shown in FIGS. The configuration is substantially similar to the embodiment shown in FIGS. 1 to 7. When describing the open earphone 1 of this embodiment, common parts with the modification shown in FIGS. 8 and 9 may be described with reference to FIGS. 8 and 9.

In the following description, the arrow directions shown in FIG. 1 will be referred to as the "back and forth" direction and the "up and down" direction, respectively.

The "up and down" direction is the direction in which the open earphone 1 is connected to the user's ear when the user wears the open earphone 1 in the user's ear, or in other words, the direction in which the open earphone 1 is inserted into or removed from the user's ear. . The direction from the open earphone 1 to the user's ear, that is, the direction in which the open earphone 1 is inserted into the ear, is the "down" direction, and the direction from the user's ear to the open earphone 1, that is, the direction in which the open earphone 1 is inserted from the ear. The direction of removal is the "up" direction.

The "front-back" direction is a direction perpendicular to the "up-down" direction, and when the user wears the open-type earphone 1 in the ear, the position where the open-type earphone 1 contacts the tragus of the user's ear and the position of the concha. This is the direction that connects the position where it contacts the inner wall. The direction from the open earphone 1 toward the tragus of the ear is defined as the "posterior" direction, and the direction from the open earphone 1 toward the inner wall of the concha is defined as the "front" direction.

Here, FIG. 10 shows the names of each part of the auricle. As shown in FIG. 10, the tragus (also called the tragus of the ear) is a protrusion on the face side of the entrance to the external auditory canal. The outer curved part of the auricle is called the helix. The concha is composed of a concha cavity and a concha boat as shown in FIG. The concha cavity is a depression located just near the entrance to the external auditory canal. The conchae is located outside the concha cavity when viewed from the entrance of the external auditory canal, and is a depression separated from the concha cavity by a portion of the helix. The open earphone 1 of the present invention comes into contact with the inner wall of the concha in the concha. As used herein, the term "inner wall of the concha" or "inner wall of the concha" refers to the wall that forms the edge of the recess that constitutes the concha or the concha.

The open earphone 1 according to this embodiment includes an earphone body 2, an acoustic duct 3, and earrings 4, as shown in FIGS. 1 to 7.

The earphone main body 2 is a case body that is elongated in the front-rear direction and has an oval shape in plan view. The earphone body 2 is a case body that can be divided in the vertical direction, and is constructed by joining and integrating an upper case 2A and a lower case 2B. The earphone body 2 has at least a built-in speaker 5. In addition to the speaker 5, the earphone body 2 may include various electronic components and a board on which they are mounted.

Note that in the present invention, the earphone body is not particularly limited to this embodiment as long as it is a case body that can house a speaker. In the present invention, the earphone body may be a case body that can be divided, for example, in the front-back direction. Furthermore, in the present invention, the earphone main body is not limited to an oval shape that is long in the front-rear direction, but may have a circular shape when viewed from above, or may have an arbitrary shape such as a square, a rectangle, or a polygon. It may be a shape.

As shown in FIG. 8, the speaker 5 is placed directly above the acoustic duct 3 in the earphone body 2 at a position where it does not come into contact with the user's ear. By arranging the speaker 5 at such a position, even if the diameter of the speaker 5 is made sufficiently large in order to improve the sound quality of the speaker 5, the speaker 5 will not interfere with the ears. In this embodiment, the speaker 5 is housed horizontally within the earphone body 2, but the speaker 5 may be housed vertically.

The acoustic duct 3 is a cylindrical member that extends diagonally from the earphone body 2 and is inserted into the external auditory canal of the user's ear deeper than the tragus. The acoustic duct 3 is formed to extend downward from the bottom of the front end (front end portion) of the earphone body 2 so as to be inclined rearward. The inclination angle θ1 (shown in FIG. 1) of the acoustic duct 3 with respect to the earphone body 2 can be set to, for example, θ1 = 60°, but in the present invention, the inclination angle θ1 is not limited to this, and is, for example, 60° ± It can be set to 10° (50° to 70°). When the inclination angle θ1 is between 50° and 70°, the open earphone 1 can fit the user's ear more reliably, and higher wearing stability can be obtained.

In this embodiment, the acoustic duct 3 has a cylindrical shape, and can introduce the sound of the speaker 5 into the ear canal. Note that in the present invention, the acoustic duct is not limited to this, and may have an oval cylindrical shape or a polygonal cylindrical shape. The cross-sectional shape of the acoustic duct can be a shape close to the shape of the external auditory canal, such as a circular shape, an elliptical shape, or a semicylindrical shape. Further, the acoustic duct may be configured to taper from the bottom of the earphone body toward the tip, or may be configured to have a constant thickness.

In this embodiment, the bottom surface 3A of the acoustic duct 3 is formed to be parallel to the cross section of the acoustic duct 3, as shown in FIG. Note that in the present invention, the bottom surface of the acoustic duct is not limited to this, and can be at any angle; for example, as shown in the modified examples shown in FIGS. 8 and 9, the bottom surface of the acoustic duct may be parallel to the bottom surface of the earphone body. may be formed.

The length of the acoustic duct 3 is such that it can be inserted deeper into the ear canal of the user's ear than the tragus. The length from the bottom of the earphone body 2 to the tip of the acoustic duct 3 on the central axis of the acoustic duct 3 is not particularly limited as long as it is long enough to introduce the speaker sound into the ear canal of the user's ear, but for example, it is 5 mm. With the above configuration, the speaker sound can be reliably introduced into the external auditory canal of the user's ear. Further, if the length of the acoustic duct 3 on the central axis is, for example, 8 mm or more, the speaker sound can be more reliably introduced into the external auditory canal of the user's ear. The length of the acoustic duct 3 on the central axis is not particularly limited, but may be, for example, 13 mm or less, thereby providing a comfortable wearing feeling without giving the user a feeling of pressure. Further, if the length of the acoustic duct 3 on the central axis is, for example, 10 mm or less, it is possible to provide a more comfortable wearing feeling without making the user feel any pressure.

Note that the length of the acoustic duct in the present invention can be such that it is inserted at least 10 mm or more deep from the point where it contacts the tragus in the external auditory canal of the user's ear. With this length, the speaker sound can be reliably introduced into the external auditory canal of the user's ear when worn on a standard adult's ear.

In this embodiment, the earphone body 2 (upper case 2A and lower case 2B) and the acoustic duct 3 are made of hard resin such as ABS resin with high rigidity. Note that in the present invention, the earphone main body and the acoustic duct are not limited to this embodiment, and can be made of a hard material. As the hard material, various resins such as not only ABS resin but also polypropylene and polystyrene can be used. Moreover, the acoustic duct 3 may be formed integrally with the earphone body 2 (for example, the lower case 2B), or may be formed separately.

Even if the acoustic duct is made of a hard material, the open earphone of the present invention can be stably held between the ear tragus and the inner wall of the concha by the earring attached to the acoustic duct. can be installed. Further, the acoustic duct in the open earphone of the present invention does not need to completely cover the inside of the ear canal, and a gap may be formed between the acoustic duct and the inner wall of the ear canal. Therefore, the open-type earphone of the present invention does not require a member such as an earpiece that is attached to the tip of a canal-type earphone and is elastically deformed in order to insert and fix the earpiece deep into the ear, so that it does not put pressure on the ear. It can provide a comfortable wearing feeling.

As shown in FIGS. 8 and 9, a circular first communication path 6 is formed in the axial center of the acoustic duct 3. As shown in FIGS. The first communication path 6 is a path that allows communication between the speaker 5 built into the earphone body 2 and the external auditory canal 11 (see FIG. 9) of the ear when the open earphone 1 is worn in the user's ear. The upper end of the first communication passage 6 opens into the earphone body 2, and the lower end of the first communication passage 6 opens into the external auditory canal 11 of the ear.

Furthermore, a groove (second communication path) 7 is formed in the longitudinal direction of the acoustic duct 3 on the outer surface of the front side (left side in FIG. 8) of the acoustic duct 3. The groove 7 is a passageway that allows communication between the atmosphere and the inside of the external auditory canal 11 of the ear when worn. As shown in FIG. 3, the groove 7 is a linear groove formed in the longitudinal direction of the acoustic duct 3 from just below the earring 4 mounting position of the acoustic duct 3 to the tip of the acoustic duct 3. By forming the groove 7, a gap that functions as a second communication path is created between the open earphone 1 and the ear canal when the user wears the open earphone 1. By forming the groove 7, the user can hear the speaker sound that is introduced into the external auditory canal through the first communicating path 6, and is also introduced into the external auditory canal 11 through the second communicating path formed by the groove 7. You can also hear the surrounding environmental sounds at the same time.

Note that in the present invention, the groove can be formed at any position on the outer surface of the acoustic duct. The groove may be formed, for example, from above the earring attachment position on the outer surface of the acoustic duct to the tip, or from a position near the bottom of the earphone body to the tip of the acoustic duct. Furthermore, in the present invention, the groove may be formed on the outer surface of the acoustic duct other than the front side surface.

Furthermore, in the present invention, the second communication path is not limited to the groove as in this embodiment, but may be a path formed separately from the first communication path, for example, on the side surface of the acoustic duct. When the second communication passage is a passage formed in the acoustic duct, the upper opening may be a hole formed in the front side of the acoustic duct and open to the atmosphere, and the lower opening may be a hole formed in the front side of the acoustic duct and open to the atmosphere. The opening may be a hole formed in the bottom surface of the acoustic duct and open into the external auditory canal of the ear.

When the second communication path is a path formed in the acoustic duct, the upper opening can be formed at any position on the front side surface of the acoustic duct 3. The upper opening of the second communication path may be located below or above the earring attachment position of the acoustic duct. Further, the upper opening of the second communication path may be formed at a position close to the bottom surface of the earphone body.

The ear ring 4 is a member formed by connecting and integrating two rings 4A and 4B made of an elastic material, and is attached to the outer surface of the acoustic duct 3. The two rings 4A and 4B are connected and integrated so that the ring 4B projects outward from the front portion of the ring 4A. The earring 4 is attached so that the rear portion of the ring 4A, which is one end in the longitudinal direction, surrounds the outer surface of the acoustic duct 3 in the outer circumferential direction. The earring 4 is attached so as to extend from the acoustic duct 3 toward the front (to the left in FIG. 1). In the present embodiment, the rings 4A and 4B are approximately circular, but the present invention is not particularly limited thereto, and they may have any shape as long as they are surrounded by curved lines or straight lines, and may be, for example, elliptical or polygonal. Since the earring 4 is constructed by connecting and integrating two rings 4A and 4B, the springiness of the earring 4 is improved and it can be elastically deformed flexibly to match the shape of the user's ear. This has the effect of making it easier to match.

As shown in FIG. 9, when the user wears the open earphone 1, the earring 4 has one end in contact with the tragus 12 of the ear, and the other end in contact with the inner wall 13 of the concha. Specifically, in the ear ring 4, the rear part (one end) of the ring 4A that contacts the rear side surface of the acoustic duct 3 contacts the ear tragus 12, and the tip (the other end) of the ring 4B that extends in the front direction contacts the ear tragus 12. The end) abuts against the inner wall 13 of the concha, more specifically the inner wall of the concha. Thereby, the acoustic duct 3 is held between the ear tragus 12 and the inner wall 13 of the concha by the ear ring 4, thereby achieving high stability in mounting.

The length of the earring 4 in the longitudinal direction, that is, the length from the portion of the ring 4A attached to the acoustic duct 3 to the tip of the ring 4B that protrudes forward, should be set as appropriate depending on the size of the ear. Although not particularly limited, it can be, for example, 12 to 20 mm from the viewpoint of stability of attachment. Further, if the length of the earring 4 in the longitudinal direction is, for example, 13 to 18 mm, the stability of wearing can be further improved.

The inclination angle θ2 (shown in FIGS. 1 and 8) of the earring 4 with respect to the acoustic duct 3 is not particularly limited, but if it is, for example, 60 to 100°, the stability of wearing can be further enhanced. Furthermore, if the inclination angle θ2 of the earring 4 with respect to the acoustic duct 3 is, for example, 60 to 90°, the stability of the mounting can be further improved. For example, the inclination angle θ2 may be approximately 90° as shown in FIG. 1, or may be smaller than 90° as shown in the modified example of FIG.

The earrings 4 may be detachably attached to the acoustic duct 3, or may be configured integrally with the acoustic duct 3. If the ring 4A is removable, it may be configured to be attached to the acoustic duct 3 by fitting the inner peripheral side of the ring 4A into an attachment position on the rear side surface of the acoustic duct 3. In addition, in the present invention, the earring is not limited to the above-mentioned embodiment, and a hole having approximately the same shape and size as the cross section of the acoustic duct is formed in the inner peripheral portion of the ring 4A, and the acoustic duct is inserted into the hole and fitted. It may also be configured such that it can be attached to an acoustic duct.

In the present invention, if the earrings are removable, multiple types of earrings of different sizes can be prepared, and the user can select the earrings of an appropriate size according to the size of his or her own ears. ring can be selected.

The earring 4 can be attached to the acoustic duct 3 at any position between the bottom of the earphone body 2 and the tip of the acoustic duct 3. In the acoustic duct 3, the length from the front end of the earphone body 2 to the earring 4 attachment position and the length from the earring 4 attachment position to the tip of the acoustic duct 3 are not particularly limited, but are, for example, 1:9 to 9. : 1, the open earphone 1 can be fitted securely to the user's ear and worn. In the acoustic duct 3, the length from the front end of the earphone body 2 to the earring 4 attachment position and the length from the earring 4 attachment position to the tip of the acoustic duct 3 are preferably 2:3 to 2:5. As a result, the open earphone 1 can be fitted to the user's ear more reliably.

The earrings 4 are made of an elastic material, that is, an elastically deformable material. The earrings 4 can be made of, for example, flexible silicone, elastomer, rubber, or the like.

Although the configuration of the open type earphone 1 that is worn on one ear (left or right) of the user has been described above, the configuration of the open type earphone 1 that is worn on the other ear (right or left) is different from that of one ear. Since it is exactly the same or symmetrical with that, illustration and description thereof will be omitted.

Here, FIG. 9 shows a state in which the open earphone 1 according to the present embodiment is worn in the user's ear. The open earphone 1 is worn in such a direction that the rear end of the earring 4 (ring 4A) comes into contact with the tragus 12 of the ear. That is, the open earphone 1 is worn in the user's ear by inserting the acoustic duct 3 into the external auditory canal 11 of the ear, but at this time, the rear end of the ear ring 4 (ring 4A) comes into contact with the tragus 12 of the Then, since the earring 4 is pressed by the tragus 12, the front end of the earring 4 (ring 4B) is pressed against the inner wall 13 of the concha, more specifically against the inner wall of the concha. The ring 4B is elastically deformed and bent in an arc shape. As a result, the earring 4 is held between the ear tragus 12 and the inner wall 13 of the concha, so that the acoustic duct 3 can connect the ear tragus 12 and the inner wall 13 of the concha with the ear ring 4. It is held stably between the two. Therefore, the open earphone 1 is reliably worn in a state that fits the user's ear.

As shown in FIG. 9, in the open earphone 1 of this embodiment, the acoustic duct 3 is sandwiched between the ear tragus 12 and the inner wall 13 of the concha by the ear ring 4, so the acoustic duct 3 is made of a hard material. In addition to being made of a material, the thickness can be made thinner than the external auditory canal. Therefore, unlike conventional earplug-type earphones that are worn by inserting an earpiece attached to an acoustic duct into the ear, the acoustic duct 3 does not press the external auditory canal 11. That is, the acoustic duct 3 can be stably held within the ear canal by the earrings 4 without pressing the inner wall of the ear canal 11. Therefore, the user can feel comfortable wearing the device without feeling pressured.

As described above, when the open earphone 1 is fitted and worn on the left and right ears of the user, the sound (speaker sound) emitted from the speaker 5 is transmitted through the acoustic duct 3 as shown by the arrow a in FIG. It passes through the first communicating path 6 formed in the center of the eardrum and reaches the cochlea. The sound vibrations transmitted to the cochlea become vibrations in the lymph fluid within the cochlea, which are converted into electrical signals, transmitted to the brain via the auditory nerve, and recognized as sound. Furthermore, as shown by arrow b in Fig. 9, surrounding environmental sounds are transmitted to the cochlea through the eardrum through the groove 7 formed in the acoustic duct 3, and the vibrations of the lymph fluid in the cochlea are converted into electrical signals. The sound is transmitted to the brain via the auditory nerve, where it is recognized as sound.

In addition, in the open earphone 1 according to the present embodiment, the acoustic duct 3 includes a first communication path 6 that communicates between the speaker 5 and the external auditory canal 11 of the ear, and a groove 7 that communicates between the atmosphere and the external auditory canal 11 of the ear. As a result, surrounding environmental sounds are 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 communicating path 6 and the surrounding environmental sound introduced into the external auditory canal 11 through the groove 7. When the speaker sound escapes into the atmosphere, it needs to pass through the first communication path 6 and then through the groove 7, which is the second communication path, so the route becomes long, and the speaker sound goes outside. leakage (sound leakage) is prevented. Furthermore, the speaker sound can be heard clearly even in places with loud environmental sounds, and there is no touch noise or the user's own voice.

Moreover, the open earphone 1 according to the present embodiment is held in a state where the acoustic duct 3 is inserted deeper into the external auditory canal of the user's ear than the tragus. Therefore, since the speaker sound is reliably introduced into the ear canal 11 through the acoustic duct 3, the user can clearly hear the speaker sound even in a place with loud environmental sounds, and the user can hear touch noise and the user's own voice. You can prevent it from echoing.

Furthermore, when the earrings 4 are configured to be detachable from the acoustic duct 3 (the earphone body 2), the earrings 4 can be easily adapted to fit each part of the user's ear and the size and shape of the ear canal 11. Can be exchanged.

As a result of the above, according to the open earphone 1 according to the present embodiment, it is possible to eliminate the disadvantages of the inner-ear earphone and the canal-type earphone, while enjoying only the advantages of both earphones.

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

1: Open earphone, 2: Earphone body, 2A: Upper case, 2B: Lower case,
3: Acoustic duct, 4: Earring,
4A, 4B: Ring, 5: Speaker, 6: First communicating path, 7: Groove (second communicating path),
11: External auditory canal, 12: Tragus, 13: Inner wall of concha

Claims (5)

The earphone itself has a built-in speaker,
an acoustic duct extending diagonally from the earphone body and inserted into the external auditory canal of the ear;
An open earphone comprising an earring attached to an outer surface of the acoustic duct,
The acoustic duct is formed with a first communication path that communicates the speaker with the external auditory canal of the ear, and a second communication path that communicates the atmosphere with the external auditory canal of the ear,
The acoustic duct has an inclination angle of 50° to 70° with respect to the earphone body,
The earring is configured by connecting and integrating two rings made of an elastic material, and one longitudinal end side of the two rings is attached to the outer surface of the acoustic duct,
The second communication path is configured by a groove formed on the outer surface of the acoustic duct,
It does not have an elastically deformable member that can be inserted deep into the ear and fixed .
Open earphones. The open earphone according to claim 1, wherein the earring is removably attached to the acoustic duct. The open earphone according to claim 1 or 2, wherein the earring has a longitudinal length of 12 to 20 mm. The open earphone according to claim 1 or 2, wherein the earring has an inclination angle of 60° to 100° with respect to the acoustic duct. The open earphone according to claim 1 or 2, wherein the length of the acoustic duct on the central axis is 5 mm to 13 mm.

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