JP2006197257A - Pillow with built-in bone conduction speaker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pillow with a built-in bone conduction speaker by which a user can listen to music or the like without troubling others due to the leakage of a sound to the outside and without worrying about positional deviation while holding a good cushioning property. <P>SOLUTION: The pillow with the built-in bone conduction speaker comprises: a power supply; a drive circuit to be driven by the power supply; the bone conduction speaker 2 for outputting a signal entered from a voice input means to the drive circuit as a sound signal; and a cushion 3 in which the bone conduction speaker 2 is arranged on a surface on which a heat part 5 abuts and the drive circuit and the power supply are built in. The cushion 3 is formed of low-resilience urethane foam. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a pillow with a built-in bone conduction speaker that can listen to music and the like by bone conduction, and particularly prevents the diffusion of sound to the surroundings.

Conventionally, as a means to listen to music or radio while sleeping, for example, there is a pillow body that incorporates a speaker, and the user can hear the sound from the speaker attached to the backside of the surface covering material on the pillow mesh sheet An application that is configured to be heard at the ear via the device has been published. (See Patent Document 1)
On the other hand, various patent applications relating to headphones utilizing bone conduction have been published (for example, see Patent Document 2).

And recently, as shown in FIG. 9, a product that can be listened to music while sleeping as a pillow (51) by incorporating a bone conduction speaker (52) into a cushioning material (53) that receives the head (55). It has become. The structure is such that a skin layer is integrally formed on the surface of an open-cell foam such as urethane foam to form a pillow-shaped cushioning material (53), and the head (55) is applied to the upper surface of this cushioning material (53). Two bone conduction speakers (52) are embedded at a narrow interval so as to be in contact with each other, and a listener can listen to music and the like by bone conduction by placing his head (55).
JP 2002-125825 A JP 2003-32768 A

  However, in the configuration of Patent Document 1, the speaker is incorporated in the pillow body and can be heard at a low volume because it is at the ear, but basically, since there is a predetermined volume, it can be heard by others. Yes, especially in quiet hospitals, there is a risk of inconvenience to the roommates.

  In addition, in the case of the headphone configuration and the earphone of Patent Document 2, since the sound hardly leaks to the outside, it can be listened to without disturbing others. However, there were still some annoyances due to restrictions such as being unable to hit.

  According to the configuration shown in FIG. 9, since the head (55) comes into contact with the bone conduction speaker (52) by placing the head, music is not disturbed like a headphone even if it is turned over. However, the cushioning material (53) that supports the head (55) is made of urethane foam and is relatively hard, so it is uncomfortable and there is a skin layer on the surface. The vibration of the bone conduction speaker (52) propagates to the buffer material (53) as shown by the solid line in the inside, and the buffer material (53) becomes a speaker by converting the vibration of the buffer material (53) into air vibration. As shown by the broken line in the figure, the air propagation sound was generated, and the problem of sound leakage still remained.

  In order to suppress the generation of the air-borne sound, as shown in FIG. 10 which is the configuration of Japanese Patent Application No. 2003-310765 filed by the present applicant, the bone conduction speaker (72) is made of a pad-like elastic buffer made of a nonwoven fabric. It is possible to hold the cushion pad (71) on a general pillow while holding it on the surface of the material (73). However, the pillow (76) has a low resilience considering the comfortable cushioning. When using polyurethane foam, the pad (71) has the disadvantage that the cushion (76) that the pillow (76) originally has is impaired, and the pad (71) is liable to slip when turning over. It had the trouble of having to adjust the position each time.

  The present invention has been made paying attention to the above points, and it is possible to prevent music from leaking to the outside and causing trouble to others, and music without worrying about misalignment while maintaining good cushioning properties. A pillow with a built-in bone conduction speaker that can be listened to is provided.

  In order to solve the above problems, a bone conduction speaker built-in pillow according to the present invention includes a power source, a drive circuit operated by the power source, and a bone conduction speaker that outputs a signal input from the voice input means to the drive circuit as a voice signal. And the bone conduction speaker is disposed on the surface with which the head abuts, and the drive circuit and a cushion body with a built-in power supply are formed, and the cushion body is formed of low-resilience urethane foam. is there.

  According to the present invention, it is possible to listen to music without worrying about position shift due to turning over or the like and sound leaking to the outside, and it is good without impairing the original cushioning property and shape possessed by the pillow. It is possible to obtain a bone conduction speaker built-in pillow that can provide a comfortable sleeping experience.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. A bone conduction speaker built-in pillow (1) shown in FIG. 1 in a perspective view and in a longitudinal sectional view in FIG. 2 is a cushion body (3) having a bone conduction speaker (2) disposed on the upper surface, and a cover (4) covering them. Constitutes a voice receiving apparatus. The bone conduction speaker (2) transmits sound from a sound source directly as sound vibrations to the listener's head (5) so that even a deaf person can hear it through bone conduction. As for the number of 2), at least two or more are arranged at predetermined intervals along the longitudinal direction of the cushion body (3).

  FIG. 3 is a block diagram showing a transmitting / receiving device of the bone conduction speaker built-in pillow (1), and an audio signal from a sound source (6) (6 ′) such as a television or a CD radio cassette is inputted to the input unit (7). The bone conduction speakers (2) and (2) are driven by the drive circuit (8) and the DC power source (9) using the battery.

  In the vicinity of the bone conduction speaker (2), there is a detection switch (10) that detects and applies the load when the head (5) is placed on the cushion body (3). When not mounted on (1), the power supply from the power source (9) to the drive circuit (8) can be stopped, so that battery consumption can be reduced. Note that the drive circuit (8) may be provided with a function of detecting the presence or absence of an audio signal input and automatically turning on / off the power, or a circuit for automatically reducing the volume when an excessive input occurs.

  FIG. 4 is a block diagram showing a transmitting / receiving device of the bone conduction speaker built-in pillow (1) shown in FIG. 1, which is operated by radio waves, infrared LEDs, or the like, and a sound from the sound source (6). The signal is received by the transmitter (11) at the receiving portions (12) provided on both sides of the upper surface of the bone conduction speaker built-in pillow (2) and input to the speaker driving circuit (8) to conduct bone conduction. A drive signal is given to the speaker (2) to operate.

  The transmitter (11) has an audio amplifying unit for amplifying audio from the sound source (6) and audio from microphone input, and a transmitting unit for transmitting the same, and can also be operated by a remote controller. In addition to the sound source (6) on the input side, the head (5) may be vibrated by a signal from a clock to be awakened or operated as a timer. The sound from the sound source (6) is stereo. Is input from the transmitter (11) to the receiver (12) as stereo.

  With the above configuration, for example, when the listener puts his head (5) on the bone conduction speaker built-in pillow (1) and turns on the power with a remote controller or the like, the sound input from the sound source (6) is transmitted. It is transmitted from the head (11) to the receiver (12) by, for example, infrared rays, and is transmitted to the head (5) as voice vibration from the bone conduction speaker (2). You can listen to voice and music.

  Thus, the cushion body (3) forming the outer shape of the bone conduction speaker built-in pillow (1) has a predetermined thickness and width dimension with a low-resilience urethane foam having its upper surface corrugated from the front toward the depth direction. Two bone-conducting speakers (2) are installed in a substantially central recess on the upper surface at a predetermined interval in the width direction.

  The interval is arranged so that at least one of them touches the head when the listener lies down, and a detection switch (10) is provided on the front side close to each bone conduction speaker (2). ) Is arranged so that only when the listener's head is placed on the cushion body (3), an on signal is generated and the power source (9) is energized to drive the bone conduction speaker (2). .

  The cushion body (3) is provided with a receiving portion (12) for receiving an audio signal from the transmitter (11) at the upper left and right corners of the cushion body (3), and the DC power source is provided on one side of the receiving portion (12). An operation unit (13) such as a unit (9) and a switch for turning on / off the power supply and a volume switch for adjusting the volume are installed, and an input unit (14) for a sound signal in the case of wired is installed on the other side. The on / off switch and the volume switch may be operated by a remote controller in the same manner as the transmitter (11).

  The reason why the receiving unit (12) is arranged on the upper surface of the cushion body (3) is to reliably receive a signal. In particular, when the signal is wireless and using infrared rays, there is a possibility that the light receiving portion (12) as the receiving portion may be covered with a futon sheet or the like during use, but if the installation position is the upper surface of the cushion body (3), light is received. The possibility that the part (12) is covered is reduced, and the infrared signal can be reliably received.

  As shown in FIG. 5 in a state where the cover (4) is removed, a recessed portion to the extent that the bone conduction speaker (2) and the detection switch (10) are embedded in the central portion of the corrugated upper surface of the cushion body (3). (3a) is formed, and the bone conduction speaker (2) is installed on the upper surface of the non-woven fabric (15) inserted into the recess (3a). The nonwoven fabric (15) is formed by fusion-bonding resin fibers to have a predetermined thickness, and after being inserted into the recessed portion (3a), the upper surface thereof is flush with the upper surface of the surrounding cushion body (3). It is trying to become.

  The urethane foam forming the cushion body (3) is an open-celled foam, and the wall surfaces of the bubbles are connected by a surface, so that vibration is easily transmitted. On the other hand, when the nonwoven fabric (15) is used as a cushioning material, the nonwoven fabric (15) has a structure in which the fibers are overlapped. Therefore, when the vibration of the bone conduction speaker (2) is transmitted to the fibers. Friction occurs between the fibers, and the speaker vibration is converted into thermal energy, thereby attenuating air-borne sound. Further, since the vibrating fiber portion is linear, it is less likely to be converted into air vibration compared to the case where the urethane foam is a planar body, and there is an effect that the generation of air propagation sound is reduced.

  Furthermore, an annular slit (15a) surrounding the periphery of the bone conduction speaker (2) is formed in the nonwoven fabric (15), and when the head (6) is placed on the nonwoven fabric (15), the gravity inside the slit (15a) The bone conduction speaker (2) portion is bent and embedded in the nonwoven fabric (15).

  As a result, when no load is applied, the contact of the bone conduction speaker (2) protruding from the surface of the nonwoven fabric (15) with the listener's head (5) is further relaxed, and the feeling of use becomes comfortable and the sound is also good. The bone conduction speaker (2) in the slit (15a) and the non-woven fabric part have no fiber connection relationship with the non-woven fabric (15) on the outer periphery. The vibration transmission is interrupted, and the generation of air propagation sound can be further suppressed.

  With the above configuration, the load when the head (5) is placed on the pillow (1) prevents the bone conduction speaker (2) from being buried in the cushion body (3), and ensures the contact force with the skull. Since sound vibration can be transmitted, both the volume and sound quality of the bone conduction sound can be improved, and vibration generated from the bone conduction speaker (2) can be directly transmitted to the cushion body (3). 3) Generation of air conduction sound from itself can be suppressed, and sound leakage to the surroundings can be eliminated.

  The detection switch (10) is disposed on the upper surface of a flexible sheet (16) disposed below the nonwoven fabric (15) and interposed between the detection switch (10) and the cushion body (3). This prevents the detection switch (10) from being buried in the cushion body (3) and ensures the switch operation.

  Since this detection switch (10) is located close to the head (15), a waterproof structure should be adopted to prevent sweat from entering the switch and shorting between the terminals, resulting in malfunction. Although not particularly shown, the switch (10) is covered with a vinyl chloride tube, and both ends are heat-sealed to form a watertight structure.

  Further, the cushion body (3) is provided with a recessed portion (3b) in the central portion on the near side where the neck portion is located when the head (5) is placed, and the neck portion is located on the recessed portion (3b). When positioned, this is used as a guide so that the bone conduction speaker (2) is surely in contact with the head (5).

  The cushion body (3) with the cover (4) removed is covered with a storage bag (17), and the storage bag (17) storing the cushion body (3) can be easily sewn by the user. Keep specifications that cannot be removed. This is to prevent the user from touching the bone conduction speaker (2), the detection switch (10), etc. by taking out the cushion body (3) from the storage bag (17) to break or break the wiring material.

  The cover (4) is provided with a fastener (4a) on the back surface of the cover (4) as shown in FIG. ) And can be replaced with a new cover. At this time, the opening by the fastener (4a) is provided in a U-shape so that it can be easily attached and detached, and it is not necessary to bend the cushion body (3) at the time of attachment and detachment. The occurrence of problems such as disconnection can be prevented.

  As shown in the partial cross-sectional view of the bone conduction speaker built-in pillow (1) in FIG. 7, the wiring material for connecting the bone conduction speaker (2), the drive circuit (8), the power source (9), the receiving unit (12), etc. 18) is housed in a notch (3c) of an appropriate depth provided on the back side of the cushion body (3).

The cut (3c) is formed as linearly as possible to store the wiring material (18), and after storing, the cut (3c) is sealed from the outside with an adhesive tape (19), The holding and fixing is easy and reliable, and prevents the wiring member (18) from moving due to an external force during use of the pillow (1) and disconnection, and prevents the cushion body from being broken from the notch (3c). be able to. Furthermore, the wiring material (18) enters the vicinity of the surface of the cushion body (3) and the tactile sensation is not deteriorated, and the quality of the pillow can be improved.

  Since the bone conduction speaker (2) is disposed in the vicinity of the surface of the cushion body (3), the lead wire (18a) is inserted into a through hole (3d) penetrating the cushion body (3) vertically. Good. In this case, the length of the lead wire (18a) in the through hole (3d) is sufficiently longer than the length of the through hole (3d), so that the cushion body (3) can be accommodated without being tensioned. Can prevent disconnection.

  Further, as shown in FIG. 8, the receiving unit (12), the operation unit (13), and the voice input unit (14) that receive infrared rays or the like disposed in the back corner of the upper surface of the cushion body (3) receive light or For the operation, it is cut out from the storage bag (17), and the cover (4) is also provided with an opening (4a) to be exposed to the outer surface. A hook-and-loop fastener (20) is provided at an appropriate position on the rear surface side of the periphery of the opening (4a) and is engaged with the hook-and-loop fastener (20 ') on the side of the storage bag (17), thereby shifting the positions of the openings (4a). This eliminates problems caused by the light receiving unit and the operation unit being covered with the cover (4).

  The cushion body (3) is formed by a low-repulsion urethane foam having a low repulsive force and having a top surface shaped in accordance with the shape of a human head as in the configuration shown in the above embodiment, and the recess (3b) ) And used as a pillow (1), the position of the head (5) is naturally determined, the back of the head contacts the bone conduction speaker (2), and the detection switch (10) is energized. Therefore, music and the like can be heard in the most comfortable state without requiring any troublesome work for positioning the bone conduction speaker (2).

  In addition, this invention is not limited to the said Example, In the range which does not deviate from a summary, it can implement in a various aspect further. For example, by incorporating a radio tuner (21), CD, MD, HDR, etc. in the vicinity of the operation unit (13) or the voice input unit (14) on both sides of the back of the pillow with built-in bone conduction speaker (1) This eliminates the need for connecting an external sound source or a connection cord, and can greatly improve usability.

  In addition, if a timer or voice recorder is built in, it can be expanded to other utilization methods. If a lighting device is built in the vicinity of the light receiving unit, it is possible to control the lighting by raising and lowering the head.

  ADVANTAGE OF THE INVENTION According to this invention, it can utilize as a bone conduction speaker internal organs pillow which can enjoy music etc. not only for a healthy person but for a hearing-impaired person.

It is a perspective view of the bone conduction speaker built-in pillow which shows one Embodiment of this invention. It is sectional drawing which follows the AA line of FIG. It is a block diagram which shows the transmission / reception apparatus of the bone conduction speaker built-in pillow of FIG. It is a block diagram which shows the transmission / reception apparatus of the bone conduction speaker built-in pillow at the time of making FIG. 3 into a radio system. It is a perspective view which shows the state which removed the cover from FIG. It is a perspective view which shows the removal state of the cover in FIG. FIG. 3 is a partial detail view of FIG. 2 showing a processing state of the wiring material of FIG. 2. It is the fragmentary perspective view which looked at the bone conduction speaker built-in pillow from back. It is sectional drawing which shows the structure of the conventional bone conduction speaker built-in pillow. It is sectional drawing which shows the state which the conventional bone conduction speaker built-in pad is used.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bone conduction speaker built-in pillow 2 Bone conduction speaker 3 Cushion body 3a Recessed part 3b Recessed part 3c Cut 3d Through-hole 4 Cover 4a Fastener 5 Head 6 Sound source 7 Input part 8 Drive part 9 Power supply
10 Detection switch 11 Transmitter
12 Receiver 13 Operation unit
14 Audio signal input 15 Nonwoven fabric
15a Slit 16 Sheet 17 Storage bag 18 Wiring material
18a Lead wire 19 Adhesive tape
20 hook-and-loop fastener 21 radio tuner

Claims (7)

  A power supply and a drive circuit operated by the power supply, a bone conduction speaker that outputs a signal input from the voice input means to the drive circuit as a voice signal, and the bone conduction speaker are disposed on the surface that the head abuts on. A bone conduction speaker built-in pillow comprising the drive circuit and a cushion body incorporating a power source, wherein the cushion body is formed of low-resilience urethane foam.   The pillow with a built-in bone conduction speaker according to claim 1, wherein a receiving portion is disposed on a part of the cushion body, receives an audio signal from the transmitter, and inputs the audio signal to a drive circuit of the bone conduction speaker.   The pillow with a built-in bone conduction speaker according to claim 2, wherein a receiving part for receiving an audio signal from a transmitter using infrared rays as a transmission means is provided on the cushion body.   2. The bone conduction speaker built-in pillow according to claim 1, wherein a nonwoven fabric in which resin fibers are fused and joined is interposed between the bone conduction speaker and the cushion body.   2. A bone conduction speaker according to claim 1, wherein a switch that operates by detecting the load on the listener's head is provided, and the power source is energized or the signal input to the bone conduction speaker is changed only when the switch is operated. Built-in pillow.   The bone conduction speaker built-in pillow according to claim 1 or 4, wherein a flexible sheet is disposed below the bone conduction speaker or the nonwoven fabric. 2. The bone conduction according to claim 1, wherein a wiring material for electrically connecting a bone conduction speaker, a drive circuit, a power source, a receiving portion and the like is housed and sealed in a slit formed in a lower portion of the cushion body. Speaker built-in pillow.

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