KR20210051088A - Earphone with a sound guiding tube - Google Patents

Abstract

Provided is an earphone with an acoustic guide tube. The acoustic guide tube has an outer chamber next to the ear. When compared to a conventional earphone that delivers sound directly into the ear, the earphone according to the present invention has an external chamber, which forms an acoustic field outside the ear and transmits the sound through the acoustic guide tube into the ear at a special angle. The earphone according to the present invention is suitable for a stereo sound source or multi-channel sound sources, and is capable of reducing a risk for which may be caused by wearing the earphone for a long time.

Description

Earphone with a sound guiding tube {Earphone with a sound guiding tube}

The present invention relates to an earphone. More particularly, the present invention relates to an earphone provided with a sound guide tube capable of forming sound in the chamber of the sound guide tube and transmitting sound to the inner ear of the listener.

Conventional earphones transmit the speaker's sound directly to the listener's inner ear at 180°. If worn for a long time, the listener's inner ear may be damaged, for example, the listener's hearing is damaged.

According to the conventional earphone 100, the speaker is disposed on the earphone case 120 and connected to the sound source through a signal circuit (130). When the earphone 100 is used, the ear phone case 120 and the speaker 110 on the earphone case 120 are inserted into the ear. Since a part of the speaker 110 and the earphone case 120 must be placed in the ear, the size of the chamber that the speaker 110 can have in the earphone case 120 is strictly limited, and thus, the sound effect or the sound effect according to the large space Multi-channel sound effects cannot be achieved.

If a user wants a sound effect according to a large space or a multi-channel sound effect, a large headphone without a plug as shown in FIG. 2 may be used. According to the conventional headphone 200, one or multiple speakers (not shown) are disposed in the large-volume cases 210 and 220, and signals are transmitted to the internal speakers through the signal circuit 230. Afterwards, the headphone covers 212 and 222 deliver sound to the listener's ear. However, compared to earphones, such a conventional headphone 200 is too large in size, and is not suitable for a popular portable audio device (music player) or a video device (video player) today. Therefore, a method of allowing a user to carry a small and lightweight portable audio device or video device having a small earphone having a large space and a multi-channel effect has become an important target of the industry.

Accordingly, the present invention is to provide an earphone having a sound guide tube in order to solve the above-described problem and other problems.

According to the earphone with the sound guide tube according to the present invention, the sound generated by the speaker is formed as an acoustic field in the chamber, and the sound is transmitted at a special angle to the inner ear of the listener through the sound guide tube. It can reduce the risk of damaging the listener's hearing.

In addition, according to the earphone with the sound guide tube according to the present invention, the size of the speaker can be adjusted as necessary and is not limited by the space, and the volume of the chamber is not limited by the structure of the ear, so that the size of the speaker is better. You can use speakers.

In addition, according to the earphone provided with the sound guide tube according to the present invention, the position of the speaker can be adjusted, and the required capacity of the chamber can be calculated according to the characteristics of the sound and frequency of the speaker.

In addition, according to the earphone provided with the sound guide tube according to the present invention, it is possible to form a synthesis chamber formed by an expansion chamber, and to form a synthesis acoustic field.

In order to reduce the risk of damaging the hearing of listeners who wear the earphones for a long time, the earphones equipped with an acoustic guide tube can form the sound generated by the speaker into an acoustic field in the chamber and pass through the acoustic guide tube. It can transmit sound at a special angle to the listener's inner ear.

According to the present invention, since the earphone chamber is disposed outside the ear, the size of the speaker may be adjusted as necessary and may not be limited by space.

According to the earphone provided by the present invention, when the earphone is used to receive a stereo sound source, the sound is not transmitted directly to the ear to protect the ear while the volume of the chamber is calculated to maintain the ideal audio waveform. In addition, since the chamber is on the outside of the ear, the volume of the chamber is not limited by the structure of the ear, so that higher output and better performance speakers can be used to meet the needs.

According to the earphone provided by the present invention, the positions of the speakers can be adjusted, and the required capacity of the chamber can be calculated according to the characteristics of the sound and frequency of the speakers.

The earphone provided by the present invention has a synthesis chamber formed by the expansion chamber in order to adjust the position of the speakers by using different expansion tubes and to calculate the required chamber volume according to the sound and frequency of the speakers.

According to the earphone provided by the present invention, a chamber is added to the outside of the expansion tube to increase the independent acoustic field, and the chamber forms a synthetic acoustic field with the main chamber formed inside the outer chamber acoustic guide tube. .

In order to understand the above-described points and other objects, features, and advantages of the present invention, a preferred embodiment accompanying the drawings will be described in detail below.

It is to be understood that the foregoing general description and the detailed description to be described below are for illustrative purposes only, and are intended to provide a better description of the claimed invention.

The present invention provides an earphone with a sound guide tube, which is different from the conventional earphone in which the sound produced by the speaker is transmitted directly to the inner ear at approximately 180°. According to the earphone provided by the present invention, in order to reduce the damage to the listener's inner ear caused by wearing the earphone for a long time, such as damage to the listener's hearing, the speaker has a special angle, e.g. 90 It is placed in the inner ear at °, and the sound generated by the speaker is formed into an acoustic field in the chamber and transmitted to the inner chamber of the listener through the acoustic guide tube. For example, MP3 players and iPod music players are very popular today, but if they are worn for a long time, the user's hearing can be damaged.

The earphone provided with the sound guide tube provided by the present invention is different from the conventional earphone. In the present invention, the chamber of the earphone is disposed outside the outer ear, and thus the chamber can be adjusted as necessary and is not limited by the space. Therefore, the earphone of the present invention is suitable for a multi-channel speaker or a stereo speaker composed of a plurality of speakers.

When the earphone according to the present invention is used to receive a stereo sound source, the ear can be protected while an appropriate chamber volume is calculated to maintain an ideal audio waveform instead of transmitting sound directly to the ear. Even if conventional earphones are placed in the user's outer ear, whether or not the speaker used will affect the user must be considered, and therefore, the conventional earphones are limited to what range. This is what a speaker should be used for. According to the earphone with sound guide tube in the present case, since the chamber is outside the outer ear, the volume of the chamber is not limited by the structure of the inner ear, and therefore, higher output and better performance. Speakers can be employed to meet the needs.

In the present invention, if an earphone equipped with a sound guide tube is used in a multi-channel system, the chamber of the earphone can be adjusted according to the positions of the speakers, and an optimal acoustic field can be generated according to the characteristics of the speakers. In addition, in multi-channel earphones, deepened surround or deepened bass sound effects can be effectively created by adjusting the ratio between the height and width inside the chamber. In other words, the tube diameter of the sound guide tube is adjusted according to the estimated sound guide volume that needs to be produced by the sound guide tube to achieve the required sound quality and volume. The above-described technology for improving the sound quality by adjusting the volume of the chamber, the following patent applications from the Republic of China (ROC) filed by the inventor of the present invention: "Synthetic Acoustic Field" filed on March 22, 2004 Patent Application No. 93107621 entitled "One Earphone"; Patent Application No. 93111985 entitled "Earphone with Synthetic Acoustic Field" filed on April 29, 2004; Patent Application No. 94103553 entitled "Multi-Channel Earphone" filed for the fourth time in February 2005; And Patent Application No. 95105609 entitled "Multi-Channel Earphone", filed for the 20th time in February 2006, may be referred to. Details will not be described again, as previously disclosed content is added here as well.

Hereinafter, an earphone with an acoustic guide tube provided by the present invention and various earphone designs with different acoustic guide tube structures will be described with reference to several implementation examples. The earphones described below include earphones for receiving stereo sound sources and earphones for receiving multi-channel sound sources.

Referring to FIG. 3, only one side of an earphone having a sound guide tube according to an embodiment of the present invention is shown, but those skilled in the art, the structure of the other side, which is not shown, is also shown here. It should be understood that it is the same as the structure of the cotton, so it will not be described again. The earphone 300 includes an external chamber 310 having a hole 312 for placing a stereo speaker 320, and an in-ear type acoustic guide tube inserted into the user's outer ear. Including 314. The ear insertion type sound guide tube 314 is disposed in the user's outer ear in the direction A, and the sound is transmitted to the user's ear through the phonating hole 316 of the ear insertion type sound guide tube 314. The required volume of the chamber may be calculated according to the sound and frequency of the speaker 320. The chamber volume may be calculated according to the length (L) and inner diameter (R) of the sound guide tube 310 and the length and inner diameter of the ear-insertable sound guide tube 314.

High-powered speakers can be used in the earphone with the sound guide tube of the present invention, and by adjusting the ratio between the height and the width inside the outer chamber, it is possible to effectively create deepened surround sound and deepened bass sound effects. 4A and 4B illustrate an earphone having a sound guide tube according to another embodiment of the present invention. The earphone structure shown in FIG. 4B is a side view in which the earphone structure shown in FIG. 4A is inverted by 180°, and only one side of the earphone is shown in FIGS. 4A and 4B, but those skilled in the art to which the present invention pertains It should be understood that the structure of the other side of the is the same and therefore will not be described here.

The earphone 400 includes a cylindrical outer chamber 410, a multi-channel speaker 420 disposed in a side hole, and an ear-insertable sound guide tube 414 that can be placed in the user's outer ear. . In order to generate reflected sound from the inside of the outer chamber 410 and prevent the volume of the speaker 420 from being too high, which may affect the quality of the sound, a material that absorbs reflected sound, such as an acoustic absorbing sponge, is used. , May be disposed on the opposite side of the speaker 420 disposed in the outer chamber 410 to absorb the reflected sound, such a method, for example, may be used for noise processing.

The ear insertion type sound guide tube 414 can be placed in the user's outer ear in the direction A, and the sound is transmitted to the user's ear next to the vocal hole 416 of the ear insertion type sound guide tube 414 . In order for the user to more comfortably wear the earphone, the front end of the ear-insertable sound guide tube 414 may be fixed to the outside of the speech hole 416 by a plastic soft pad 418. As shown in the drawing, the speaker 420 may obtain signals from the signal circuit 470, and the speaker 420 may be a high-power speaker according to the size of the outer chamber 410.

Moreover, in order to generate the sound reflected from the inside of the outer chamber 410 and prevent the volume of the speaker 420 from being too high, which may affect the quality of the sound, a material that absorbs sound, such as a sound absorbing sponge ( The 430 may be disposed on the opposite side of the speaker 420 disposed in the outer chamber 410 for absorbing the reflected sound, and this method may be used, for example, for noise processing.

Further, a plurality of speakers suitable for multi-channel sound sources may be arranged outside the outer chamber 410, for example, to act as a 5.1-channel sound source of a digital video disc (DVD). Of course, the present invention is not limited to five speakers, instead speakers can be added according to the user's need for sound quality, or other sound devices or video devices, such as a 6.1-channel sound source or even a 7.1-channel sound source. The sound source of may be employed. For example, speakers 440 and 460 as shown, or an expansion chamber 450 disposed outside the outer chamber 410 and another speaker 452 may be added to the outside of the expansion chamber 450. have. The arrangement of these speakers may be adjusted according to an environmental or bass sound effect required for the earphone 400. Regarding the design of the multi-sound source earphones, reference is made to the aforementioned patent applications filed by the inventor of the present invention, and therefore details will not be described here.

The required chamber volume of the earphone 400 may be calculated according to acoustic and frequency characteristics of the speakers 420, 440, 452, 460 or other speakers added according to design needs. The chamber volume may be calculated by adjusting the height and the inner diameter of the cylindrical outer chamber 410.

Hereinafter, in the present invention, an earphone having a sound guide tube to which a multi-channel system is applied will be described, and the chamber of the ear phone may be adjusted according to the positions of the speakers to provide an optimized acoustic field according to the characteristics of the speakers. . Moreover, the size of the tube can be adjusted according to the estimated acoustic field that needs to be produced by the outer chamber in order to achieve the required acoustic quality and volume.

5A shows an earphone with a sound guide tube according to another embodiment of the present invention. In the present invention, only one side of the earphone is shown in FIG. 5A, but those skilled in the art should understand that the structure of the other side of the earphone is the same, and therefore will not be described here. The earphone 500 includes an outer chamber 510 having holes 511, 513, 515, and 517 for arranging multi-channel speakers. The earphone 500 further includes an ear-insertable sound guide tube 512 that can be disposed in the user's outer ear and the utterance hole 514. The earphone 500 is disposed in the user's outer ear in the direction A, and the sound is transmitted to the user's ear through the hole 514 of the ear-insertable sound guide tube. The required chamber volume of the earphone 500 may be calculated according to the acoustic and frequency characteristics of the speakers. The chamber volume may be calculated according to the length (L) and inner diameter (R) of the outer channel 510 and the length and inner diameter of the ear-insertable sound guide tube 514. In order to better understand the structure of the earphone 500, FIG. 5B is a front view of the earphone 500 in the direction of Ⅰ-Ⅰ′, FIG. 5C is a plan view of the earphone 500 in the direction of Ⅰ-Ⅰ′, and FIG. 5D is The rear view of the earphone 500 in the Ⅰ-Ⅰ' direction and FIG. 5E show the left side of the earphone 500 in the Ⅰ-Ⅰ′ direction in the Ⅱ-Ⅱ′ direction of the earphone 500. As shown in FIG.

In this embodiment, holes 511, 513, 515, 517, and 519 for arranging speakers on the outer chamber 510 are mainly arranged along the 5.1 channel sound source of the digital video disk (DVD). . Of course, the present invention is not limited by the location of the five speakers, but instead more speakers can be added according to the user's need for sound quality, and other sound devices such as 6.1 channels or even 7.1 channels of sound source. The sound source of the imaging device can be employed; And, if necessary, the number of speakers can be adjusted. The positions of the holes 511, 513, 515, 517, and 519 in which the arranged speakers are arranged may be adjusted according to the characteristics of the speakers in order to generate an optimal acoustic field. For example, if the first and second main speakers are disposed at the positions of the holes 513 and 517, respectively, as shown in FIG. 5A, the subwoofer is disposed at the positions of the holes 515, The surround speaker is disposed at the location of the hole 511, and the center speaker is disposed at the location of the hall 519.

In an embodiment, in order to achieve a better acoustic field effect, a set of holes consisting of a small hole or a group of holes for removing the sound pressure formed in the outer chamber as indicated by reference numeral 520 is provided in the outer chamber 510 ) Can be formed.

The present invention provides an earphone with a sound guide tube, the earphone has a synthesis chamber formed by an outer chamber, the positions of the speakers can be adjusted using different expansion tubes, and the required chamber volume is the speaker It is selected according to their acoustic and frequency characteristics.

6 shows an earphone with a sound guide tube according to another embodiment of the present invention. In the present invention, only one side of the earphone is shown in FIG. 6, but those skilled in the art will understand that the structure of the other side of the earphone is the same and therefore will not be described again here. The earphone 600 includes an outer chamber 610 having holes 611, 613, 615, 617, and 619 for arranging multi-channel speakers. The earphone 600 further includes an ear-insertable sound guide tube 612 that may be disposed in the user's outer ear and the vocal hole 614. The earphone 600 is disposed in the user's outer ear in the direction A, and the sound is transmitted to the user's ear through the hole 614 of the ear-insertable sound guide tube 612. The difference between the earphone 600 and the earphone of FIG. 5A is that expansion tubes are further added to form the synthesis chamber. As shown in the drawing, holes 615 and 619 for arranging speakers are located at the ends of the extension tubes 620 and 630, respectively.

In addition to calculating the required chamber volume according to the acoustic and frequency characteristics of the speakers, different chambers may be formed along the expansion tubes 620 and 630. The main chamber is formed in the outer chamber 610, the expansion chambers are formed by the expansion tubes 620 and 630, respectively, and the required chamber volume is calculated according to the acoustic and frequency characteristics of the speakers.

In one implementation, a set of holes consisting of a small hole or a group of holes may be formed on the expansion tubes 620 and 630 to eliminate sound pressure to achieve a better acoustic field effect.

7 shows an earphone with a sound guide tube according to another embodiment of the present invention. In the present invention, only one side of the earphone is shown in Fig. 7, but the structure of the other side of the earphone is the same as that shown in Fig. 7, and thus details will not be described here. The earphone 700 includes an outer chamber 710 having holes 711, 713, 715, 417, and 719 for arranging multi-channel speakers. The earphone 700 further includes an ear-insertable sound guide tube 712 that can be disposed in the user's outer ear and the utterance hole 714. The earphone 700 is arranged in the user's outer ear in the direction A, and the sound is transmitted to the user's ear through the hole 714 of the ear-insertable sound guide tube 712. The difference between the earphone 700 and the earphone of FIG. 5A is that an extension tube is added from the synthesis chamber. As shown in the figure, a hole 715 for arranging a speaker is located at an end of the expansion tube 720.

In addition, the difference between the earphone 700 and the earphone of FIG. 6 is that an acoustic chamber 732 is further added after the expansion tube 730, and the speaker placement hole 719 is on the side wall of the acoustic chamber 732. Is deployed. In addition to calculating the required volume of the chamber according to the acoustic and frequency characteristics of the speakers, independent acoustic fields can be formed in the acoustic chamber 732 along different chambers formed by the expansion tube 720. The main chamber is formed in the outer chamber 710, and the expansion chambers are respectively formed by the interior of the acoustic chamber 732 and the expansion tube 720 to form a synthetic acoustic field. The required chamber volume is calculated according to the acoustic and frequency characteristics of the speakers.

According to the present invention, for the user's convenience, the earphone provided with the sound guide tube can be designed with a different appearance. For example, as shown in FIG. 8A, the earphone may be designed in a three-dimensional hexagonal shape. Although FIG. 8A shows only one aspect of the earphone provided by the present invention, it should be understood by those skilled in the art that other aspects of the earphone are the same as that of FIG. 8A, and thus details will not be described. The earphone is described herein with reference to the drawings of various aspects, as shown in Figs. 8A-8F. 8B is a front view of the earphone 800 in the direction Ⅰ-Ⅰ′, FIG. 8C is a rear view of the earphone 800 in the direction Ⅰ-Ⅰ′, and FIG. 8D is a left side view of the earphone 800 in the direction Ⅰ-Ⅰ′ 8E is a right side view of the earphone 800 in the direction Ⅰ-Ⅰ′, FIG. 8F is a plan view of the earphone 800 in the direction Ⅰ-Ⅰ′, and FIG. 8G is a rear view of the earphone 800 in the direction Ⅰ-Ⅰ′. Shows.

The multi-channel earphone 800 with sound guide tube includes a three-dimensional outer chamber 810 having holes 811, 813, 815, 817, and 819 for arranging multi-channel speakers, and , Where the chamber corresponds to the outer chamber acoustic guide tube. The multi-channel earphone 800 having a sound guide tube further includes an ear-insertable sound guide tube that may be disposed in the user's outer ear and the vocal hole 814. The earphone is placed in the user's outer ear in the direction A, and the sound is transmitted to the user's ear through the hole 814 of the ear-insertable sound guide tube 812. The required volume of the chamber of the earphone 800 may be calculated according to the acoustic and frequency characteristics of the speakers. The volume of the chamber may be calculated according to the length (L) and inner diameter (R) of the outer chamber sound guide tube in the three-dimensional chamber 810 and the length and inner diameter of the ear-insertable sound guide tube 814.

In this embodiment, the holes 811, 813, 815, 817, and 819 on the three-dimensional chamber 810 for arranging the speakers are mainly arranged according to the 5.1 channel sound source of the digital video disk (DVD). . Of course, the present invention is not limited by the location of the five speakers, but instead more speakers can be added according to the user's need for sound quality, or, for example, a 6.1 channel or even 7.1 channel sound source and Likewise, a sound source of another sound device or video device may be employed; And, if necessary, the number of speakers can be adjusted.

The positions of the holes 811, 813, 815, 817, and 819 for arranging the speakers may be adjusted according to characteristics of the speakers in order to create an optimal acoustic field. For example, if the positions of the holes 811 and 817 are arranged according to the 5.1 channel sound source of the DVD, the first and second main speakers are arranged in the holes 811 and 817, and the subwoofer is It may be disposed at the location of the hole 819, the surround speaker may be disposed at the location of the hole 813, and the center speaker may be disposed at the location of the hole 815.

It will be apparent to those skilled in the art according to the present invention that various modifications and variations can be made to the structure of the present invention without departing from the spirit and scope of the present invention. In view of the foregoing, if modifications and variations of the invention fall within the scope of the following claims and their equivalents, the invention is intended to cover modifications and variations of the invention.

Claims (4)

Outer chamber;
An in-ear type sound guide tube connected to the outer chamber and disposed in the user's ear; And
As a first speaker disposed on the first side of the outer chamber, the second side of the outer chamber is blocked to form a space in the outer chamber, and the sound generated by the first speaker forms sound in the outer chamber space. Earphones having a sound guide tube having; a first speaker transmitted to the ear of the user through the next ear-insertable sound guide tube.
The method of claim 1,
Earphones having a sound guide tube that is inserted into the ear of the user in a first direction, and the direction in which the first speaker generates sound forms a predetermined angle with the first direction.
The method of claim 2,
Earphones having a sound guide tube with a predetermined angle of 90°. The method of claim 1,
Earphones having a sound guide tube, the capacity of the outer chamber is determined according to the sound and vibration frequency of the first speaker.