JP2005109642A - Sound reproducer and bathroom sound system equipped with the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sound reproducer capable of giving a good sound in the vicinity of user's ear even for a user with different physique. <P>SOLUTION: The sound reproducer comprises a base section 51, a pair of speakers 54 and 55 provided closely to the opposite ends of the base section 51, an infrared receiving circuit receiving an audio signal transmitted from other external device (e.g. an infrared transmitter) in a specified signal form (e.g. infrared light), and an amplifier outputting an audio signal received by the infrared receiving circuit from speakers 54 and 55, and sucker 57 being sucked freely to an external wall face is provided on the rear surface of the base section 51. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an acoustic reproduction apparatus that reproduces music or the like through a speaker, and a bathroom acoustic system including the acoustic reproduction apparatus.

Conventionally, for example, in a bathroom of a house, a speaker that outputs music or the like may be provided for the purpose of relaxing a user who is taking a bath (see, for example, Patent Document 1).
JP 2003-97062 A

  According to the above publication, as shown in FIG. 7, the pair of left and right speakers 71, 72 are fixed to a wall surface 75 of the bathroom. A projector 73 is connected to the speaker, and a screen 74 is provided on the wall surface facing the wall surface 75 to which the speakers 71 and 72 are fixed. An image from the projector 73 can be projected onto the screen 74. It is like that. Since the sound corresponding to the video is output from the speakers 71 and 72, a movie or the like can be viewed in the bathroom.

  Usually, since the bathroom is a relatively narrow space surrounded by a flat wall surface, the sound from the speaker reverberates in the bathroom and it is difficult to listen to music and the like satisfactorily. Therefore, if the speaker is fixed at a position where the user can hear the sound from behind the head while immersed in the hot water in the bathtub, the sound is output at the user's ear, so that the influence of echo and the like is suppressed. Can do.

  However, in the configuration shown in the above publication, since the speakers 71 and 72 are fixed to the wall surface 75, if the fixed position is set so as to match the physique of an adult, for example, when the child uses the speaker, 71 and 72 may be separated from the head. Therefore, even if the music can be listened to well by adults, the expected effect is often not obtained when used by a child.

  The invention of the present application has been conceived under the circumstances described above, and can provide a sound reproduction apparatus capable of providing good sound at the user's ear even when the user's physique is different, and a bathroom sound system including the same. The issue is to provide

  In order to solve the above problems, the present invention takes the following technical means.

  The sound reproducing device provided by the first aspect of the present invention is sent in a predetermined signal form from a base portion, a pair of speakers provided near both ends of the base portion, and another external device. An acoustic reproduction apparatus comprising: a receiving unit that receives an audio signal; and an output unit that outputs the audio signal received by the receiving unit from the speaker. It is characterized in that a flexible suction means is provided. Here, the predetermined signal form includes, for example, infrared light. Another external device is, for example, an infrared light transmission device that transmits the infrared light.

  According to this configuration, the sound reproducing device can be attached to, for example, an arbitrary position on the wall surface of the bathroom by the suction means provided on the base portion. For example, even if the user is an adult or a child, the sound reproduction device can be moved and attached to a position corresponding to each physique. Therefore, the user can listen to the sound with his / her ear, can suppress the influence of reverberation, etc., and can listen to the sound of the music and the like satisfactorily.

  According to a preferred embodiment, both ends of the base portion are provided with side extending portions extending in a direction substantially orthogonal to the base portion, and the speakers are provided on surfaces of the both side extending portions facing each other. It may be done.

  According to another preferred embodiment, a buffer member may be attached to the surface of the base portion.

  The bathroom acoustic system provided by the second aspect of the present invention includes an acoustic reproduction device provided by the first aspect of the present invention, and a transmission means for transmitting an audio signal to the acoustic reproduction device in a predetermined signal form. And a supply device having supply means for supplying an audio signal to the transmission device, wherein the transmission device is provided on a ceiling or a wall surface of a bathroom.

  According to a preferred embodiment, the apparatus includes a power supply device that supplies power to the supply device and the transmission device via a predetermined power supply line, and the audio signal transmitted from the supply device to the transmission device is It may be sent superimposed on the power line. The power supply device may be a hot water supply device that performs a hot water supply operation.

  Other features and advantages of the present invention will become more apparent from the detailed description given below with reference to the accompanying drawings.

  Hereinafter, preferred embodiments of the present invention will be specifically described with reference to the accompanying drawings.

  FIG. 1 is a configuration diagram of a bathroom acoustic system to which a sound reproducing device according to the present invention is applied. This bathroom acoustic system is provided in a house, for example, and an audio device 1 as a sound source, and an audio signal transmitting device 2 that modulates an audio signal from the audio device 1 and transmits the modulated audio signal to the sound reproducing device 5 (claims) Equivalent to the “supply device” described in the scope), the hot water supply device 3 (corresponding to the “power supply device” described in the claims) that performs hot water supply operations such as general hot water and bath water heating, and the audio signal transmission device 2 An infrared transmission device 4 (corresponding to the “transmission device” recited in the claims) that transmits the modulated signal of infrared light into the bathroom as an infrared signal, and the received infrared light is demodulated into an audio signal to be externally output as sound And a sound reproducing device 5 for outputting to the above. This bathroom acoustic system is for providing music to the user for the purpose of relaxing the user during bathing.

  The audio device 1 is a device that reproduces a CD, an MD, and the like and includes an FM radio, an AM radio, and the like, and serves as a sound source that outputs a plurality of types of music. The output of the audio device 1 is connected to the audio signal transmission device 2 via the dedicated cable 6, and the audio device 1 gives an analog audio signal to the audio signal transmission device 2.

  The audio signal transmission device 2 modulates an audio signal from the audio device 1 and transmits it to the sound reproduction device 5.

  FIG. 2 is a diagram showing an electrical configuration of the audio signal transmission device 2 and the sound reproduction device 5. According to this figure, the audio signal transmitting apparatus 2 includes a left channel audio signal amplifier 21, a right channel audio signal amplifier 22, a left channel audio signal modulation circuit 23 connected to each of the amplifiers 21 and 22, respectively. The right channel audio signal modulation circuit 24 and a mixing circuit 25 connected to the modulation circuits 23 and 24 are configured.

  The left channel audio signal amplifier 21 and the right channel audio signal amplifier 22 amplify the left channel audio signal and the right channel audio signal, respectively. The left channel audio signal modulation circuit 23 and the right channel audio signal modulation circuit 24 modulate each audio signal amplified by the left channel audio signal amplifier 21 and the right channel audio signal amplifier 22. The mixing circuit 25 mixes the audio signals modulated by the modulation circuits 23 and 24 and transmits them to the infrared transmitter 4.

  As a modulation method in the modulation circuits 23 and 24, an FM (Frequency Modulation) modulation method is adopted, but not limited to this, other modulation methods such as a phase modulation method or an amplitude modulation method are adopted. May be. In the audio signal transmitting apparatus 2, the audio signal may be converted into a digital signal and then compressed and output.

  Returning to FIG. 1, the output of the audio signal transmission device 2 is connected to the hot water supply device 3 via the two-core wire 7, and the audio signal transmission device 2 sends the modulated audio signal to the hot water supply device 3. The audio signal transmitting device 2 is supplied with power (for example, 15 V) from the hot water supply device 3 through the two-core wire 7, and the modulated audio signal is transmitted while being superimposed on the power supply voltage.

  The hot water supply device 3 is installed outside a house, for example, and is a combustion unit (not shown) including a heat exchanger for general hot water supply, bathing, or hot water heating, various combustors, various valves, and the like. And a control unit 31 that controls the overall operation of the hot water supply device 3.

  The control unit 31 is configured by, for example, a printed board on which electronic components are mounted, and includes a microcomputer (not shown), a memory that stores various data, and the like. The microcomputer is a control center of the hot water supply device 3 and is sent from an operation execution program stored in a memory (not shown) or a bathroom remote controller or a kitchen remote control (not shown) for remotely operating the hot water supply device 3. Based on the operation signal, the combustion of various combustors and the opening and closing of various valves are controlled.

  The hot water supply device 3 is connected to the infrared transmission device 4 through the two-core wire 8, and the hot water supply device 3 passes the two-core wire 8 in the form of the modulated audio signal sent from the audio signal transmission device 2 as it is. To the infrared transmission device 4. The hot water supply device 3 supplies power (for example, 15 V) via the two-core wire 8, and the modulated audio signal is transmitted while being superimposed on the power supply voltage.

  The infrared transmission device 4 converts the modulation signal from the audio signal transmission device 2 into infrared light and sends it to the sound reproduction device 5 by an infrared transmission circuit (not shown). It is installed so that the light emission side faces downward.

  The sound reproduction device 5 receives infrared light transmitted from the infrared transmission device 4, demodulates it into an audio signal, and outputs it as sound to the outside.

  3A and 3B are views showing the appearance of the sound reproducing device, where FIG. 3A is a front view, FIG. 3B is a right side view, and FIG. 3C is a top view. The sound reproducing device 5 has a waterproof structure and is formed in a substantially U shape in a top view, and has a substantially rectangular base portion 51 in a front view, a left side portion 52 projecting in the orthogonal direction from the vicinity of the left end of the base portion 51, And a right side portion 53 protruding in the orthogonal direction from the vicinity of the right end of the base portion 51. The space | interval of the left side part 52 and the right side part 53 is set to such an extent that a user's head fits. A right channel speaker 54 is provided on a surface of the left side portion 52 facing the right side portion 53. Similarly, a left channel speaker 55 is provided on the surface of the right side portion 53 that faces the left side portion 52.

  That is, when the user makes the back of the head face the front surface of the base portion 51 and moves it between the left side portion 52 and the right side portion 53, the left channel speaker 55 provided on the right side portion 53 is the left ear of the user U. The user's right ear is positioned near the right channel speaker 54 provided on the left side 52. As a result, when music or the like is output from each of the speakers 54 and 55, it can be heard at the ear.

  A cushioning material 56 having elasticity is attached to the front surface of the base portion 51 and sandwiched between the left side portion 52 and the right side portion 53. The cushion material 56 is for buffering the collision between the user's occipital region and the front surface of the base portion 51, and as described above, the user's occipital region is opposed to the front surface of the base portion 51 and the left portion 52. And the right side portion 53, the user's back head comes into contact with the cushion material 56, so that the user is not shocked. Further, since the cushion material has an appropriate elasticity, even if the user presses the head against the base portion 51, no pain or the like occurs. Therefore, it is possible to enjoy music and the like output from the left and right speakers 54 and 55 more relaxedly.

  Further, four suction discs 57 are provided on the rear surface of the base portion 51 at positions that are vertically and horizontally symmetrical. Thereby, the user can attach the sound reproducing device 5 to an arbitrary wall surface in the bathroom. For example, when the sound reproducing device 5 is attached to the upper wall surface of one end portion of the bathtub B (see FIG. 1), the head is placed just on the left side 52 of the sound reproducing device 5 when the user is immersed in hot water in the bathtub. And the right side portion 53. Therefore, the user can listen to music and the like in a more comfortable state in which the head is pressed against the cushion material of the base portion 51 while being immersed in hot water in the bathtub and the influence of the echo sound is suppressed.

  Furthermore, since the base 51 is provided with the suction disk 57, the mounting position of the sound reproducing device 5 can be moved. That is, even if the bather is a child, the sound reproducing device 5 can be finely adjusted and attached at a position corresponding to the bather. Note that the number of suction disks 57 is not limited to four as described above.

  Infrared light receiving portions 58 for receiving infrared light are respectively provided on the front upper portions of the left side portion 52 and the right side portion 53 of the sound reproducing device 5. As described above, the reason why the infrared light receiving unit 58 is provided in both the left side part 52 and the right side part 53 is to suppress the possibility that the infrared light from the infrared transmission device 4 cannot be received, that is, For example, if the infrared light receiving unit 58 is provided only on one of the side portions, when the user's head is fitted in the sound reproducing device 5, the head becomes an obstacle and cannot receive infrared light. This is to avoid it. This is a result particularly taken into account because the sound reproducing device 5 is movable.

  The electrical configuration of the sound reproducing device 5 will be described. The sound reproducing device 5 includes an infrared light receiving circuit 59 and a left channel audio signal connected to the infrared light receiving circuit 59 as shown in FIG. Demodulator 60 and demodulator 61 for right channel audio signal, left channel speaker amplifier 62 connected to demodulator 60 for left channel audio signal, and right connected to demodulator 61 for right channel audio signal The channel speaker amplifier 63, the left channel speaker 55 connected to the left channel speaker amplifier 62, and the right channel speaker 54 connected to the right channel speaker amplifier 63 are configured. The sound reproducing device 5 has a circuit driven by a battery or the like.

  Next, the operation of the above configuration will be described with reference to the above-described drawings again. The left channel audio signal and the right channel audio signal generated in the audio device 1 are sent to the audio signal transmission device 2 through the dedicated cable 6, amplified to predetermined levels by the amplifiers 21 and 22, respectively, and modulated. FM modulation is performed in the circuits 23 and 24. The FM-modulated modulation signal is mixed by the mixing circuit 25 and sent to the infrared transmission device 4 via the two-core wires 7 and 8 and the hot water supply device 3.

  In the infrared transmitter 4, the modulated audio signal sent from the audio signal transmitter 2 is converted into infrared light and emitted into the bathroom. As the frequency of the infrared light in this case, for example, 2.3 MHz is used for the left audio signal, and for example, 2.8 MHz is used for the right audio signal. The audio signal transmission device 2 and the infrared transmission device 4 are connected to the hot water supply device 3 via the two core wires 7 and 8, respectively, and power is supplied from the hot water supply device 3 through the two core wires 7 and 8.

  The infrared light transmitted from the infrared transmission device 4 is incident on the infrared light receiving unit 58 of the sound reproducing device 5. The infrared light incident on the infrared light receiving unit 58 is converted from an optical signal into an electric signal (FM signal) by the infrared light receiving circuit 59, and these FM signals are for the left channel by the demodulating circuits 60 and 61. Demodulated into an audio signal and an audio signal for the right channel. Each demodulated audio signal is amplified to an appropriate volume by speaker amplifiers 62 and 63, and output from speakers 54 and 55 to the outside.

  In this case, if the user moves his / her head between the right side portion 53 and the left side portion 52 of the sound reproducing device 5, the user can enjoy the music output from the speakers 54 and 55 in his / her ear. In addition, if the sound reproduction device 5 is installed at an appropriate position, for example, if the user stretches his body while immersing in hot water in the bathtub and the head is fitted into the sound reproduction device 5, the sound reproduction device 5 is more relaxed. You can enjoy music.

  Note that the configuration of the bathroom acoustic system is not limited to the above configuration. For example, as shown in FIG. 4, the audio device 1 may be configured to be directly connected to the infrared transmission device 4 via the dedicated cable 9. In this case, as shown in FIG. 5, the infrared transmission device 4 includes amplifiers 21 and 22 that amplify the audio signal and a modulation circuit 23 that modulates the audio signal, which are provided in the audio signal transmission device 2 of FIG. , 24, a mixing circuit 25, and the like. An infrared transmission circuit 41 is connected to the mixing circuit 25, and the infrared transmission circuit 41 converts the audio signal mixed by the mixing circuit 25 into infrared light and sends it to the sound reproducing device 5. In this case, power is supplied to the infrared transmitter 4 separately from the audio device 1. About another structure, it is substantially the same as that of the structure of the bathroom acoustic system shown in FIG.

  Even in this configuration, the same effects as the bathroom acoustic system described above can be obtained, and the device configuration can be simplified compared to the configuration shown in FIG. 1, so that the device cost can be reduced.

  FIG. 6 is a diagram showing another embodiment of the bathroom acoustic system. In this embodiment, the hot water supply device 3 is provided with a bathroom remote controller 11 for remotely operating it. Moreover, the bathroom monitoring apparatus 12 for detecting the presence or absence of the bather in the bathroom or the movement of the bather in the bathroom may be provided. The bathroom monitoring device 12 is arranged near the ceiling of the bathroom, and the bathroom monitoring device 12 is supplied with power from, for example, the bathroom remote controller 11 via the two-core wire 13. The bathroom monitoring device 12 has an imaging sensor configured by, for example, an artificial retina sensor, and images the movement of a bather in the bathroom or in the bathtub B. In the bathroom monitoring device 12, a predetermined process is performed based on the captured image. As a result, when an abnormal state such as a stop of the bather's movement is detected, a signal to that effect is sent to the two-core wires 13, 8 or 7 Is sent to the bathroom remote controller 11 and the like, and a predetermined notification process is performed.

  In this embodiment, the function of the infrared transmitter 4 shown in FIG. That is, the bathroom monitoring device 12 incorporates an infrared transmission circuit (not shown), and an audio signal (infrared light) to be transmitted to the sound reproduction device 5 is transmitted from the audio signal transmission device 2 to the two-core wires 7 and 8. , Sent via the bathroom remote control 11 and the two-core wire 13.

  As described above, in this embodiment, infrared light is transmitted to the sound reproduction device 5 using the bathroom monitoring device 12 connected to the bathroom remote control 11 via the bathroom remote control 11 and the two-core wire 13 to reproduce sound. The device 5 can output sound. That is, since an existing configuration can be used, an increase in cost can be suppressed.

  The bathroom remote controller 11 may be provided with an infrared transmission circuit. According to this configuration, the bathroom monitoring device 12 that transmits infrared light becomes unnecessary, and the cost can be further reduced.

  In the above configuration, the audio device 1 may be remotely operated by the bathroom remote controller 11. That is, when a user operates an operation switch that is normally provided in the bathroom remote control 11, an operation signal is sent from the bathroom remote control 11 to the audio device 1 via the hot water supply device 3 and the audio signal transmission device 2, and the audio device In 1, a predetermined operation such as MD reproduction or CD reproduction may be performed based on the sent operation signal. In addition, between the audio signal transmission device 2 and the audio device 1, an infrared transmission circuit (not shown) provided in the audio signal transmission device 2 and an infrared reception circuit (not shown) provided in the audio device 1 are provided. The operation signal may be sent to the audio device 1 by using it.

  Of course, the scope of the present invention is not limited to the embodiment described above. For example, in the said embodiment, although the case where the sound reproduction apparatus 5 was attached in a bathroom was demonstrated, the attachment position of the sound reproduction apparatus 5 is not restricted to the said embodiment. Moreover, in the said embodiment, although the infrared transmitter 4 was provided in the ceiling of the bathroom, it is not restricted to this, You may be provided in the wall of the bathroom. Moreover, in the said embodiment, although the audio signal was transmitted using the infrared rays with respect to the sound reproduction apparatus 5, it may replace with this and may be transmitted using a weak radio wave etc. Further, the audio signal transmission device 2 as a “supply device” described in the claims may be incorporated in a kitchen remote controller for remotely operating a hot water supply device installed in a kitchen or the like. In this case, the audio signal is transmitted from the audio device 1 to the kitchen remote controller, and is transmitted from the kitchen remote controller to the sound reproduction device 5 via the two-core wire 7, the hot water supply device 3, the two-core wire 8, the bathroom remote controller 11, and the bathroom monitoring device 12. It only has to be transmitted.

It is a figure which shows the structure of the bathroom acoustic system to which the sound reproduction apparatus concerning this invention is applied. It is a figure which shows the electrical structure of an audio signal transmission apparatus and a sound reproduction apparatus. The appearance of the sound reproducing device is shown, (a) is a front view, (b) is a right side view, and (c) is a top view. It is a figure which shows the structure of the bathroom acoustic system concerning other embodiment. It is a figure which shows the electrical structure of the infrared rays transmission apparatus and sound reproduction apparatus in the structure of FIG. It is a figure which shows the structure of the bathroom acoustic system concerning other embodiment. It is a figure which shows the structure of the conventional bathroom acoustic system.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Audio equipment 2 Audio signal transmission device 3 Hot-water supply device 4 Infrared transmission device 5 Sound reproduction device 51 Base part 52 Left side part 53 Right side part 54 Right channel speaker 55 Left channel speaker 56 Cushion material 57 Adsorption board 62 Left channel speaker amplifier 63 Right channel speaker amplifier

Claims (6)

A base unit, a pair of speakers provided near both ends of the base unit, a receiving unit for receiving an audio signal sent from another external device in a predetermined signal form, and an audio received by the receiving unit Output means for outputting a signal from the speaker, and a sound reproducing device comprising:
A sound reproducing apparatus, wherein a suction means that can be sucked to an external wall surface is provided on a back surface of the base portion. At both ends of the base portion, side extending portions extending in a direction substantially orthogonal to the base portion are provided, respectively.
The sound reproducing device according to claim 1, wherein the speakers are respectively provided on surfaces of the both side extending portions facing each other.   The sound reproducing device according to claim 1, wherein a buffer member is attached to a surface of the base portion. The sound reproducing device according to any one of claims 1 to 3,
A transmission device having transmission means for transmitting an audio signal to the sound reproduction device in a predetermined signal form;
A supply device having supply means for supplying an audio signal to the transmission device,
The bathroom acoustic system, wherein the transmitter is provided on a ceiling or a wall of a bathroom. A power supply device that supplies power to the supply device and the transmission device via a predetermined power supply line;
The bathroom acoustic system according to claim 4, wherein an audio signal transmitted from the supply device to the transmission device is transmitted superimposed on the power line.   The bathroom sound system according to claim 5, wherein the power supply device is a hot water supply device that performs a hot water supply operation.

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