JP2002017513A - Acoustic seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a speaker 14 and a body sensory vibrator from being driven so as to suppress the generation source of noise or waste power when nobody sits in the acoustic seats 10 and 40 provided with the speaker 14 or the body sensory vibrator. SOLUTION: A state that the seat cushion 11 of the seat 10 is laid flat to a seat back 13 is detected by a mercury switch. Otherwise, a state that the seat cushion 14 is not deformed during vacancy is detected by the mercury switch 20. By this control, when nobody takes the seats 10 and 40, current is made not to flow to the speaker 14 from an audio-amplifier 30 so as not to cause the waste of power and not to make sound or vibration generated from the speaker 14 of the vacant seats 10 and 40. Thus, sound or vibration is prevented from becoming noise or being transmitted to a person taking the other seat 10 or 40.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an acoustic sheet provided with a speaker or a body-sensing vibrator.

[0002]

2. Description of the Related Art As a form of a seat installed in a listening room or a theater, there is an acoustic seat equipped with a speaker and a bodily sensation vibrator so that sound and vibration can be transmitted directly to a seated person. Are known. by the way,
If this type of seat is installed in a theater, the sound and vibration emitted from the unused speakers and bodily sensation vibrators of many seats will be transmitted as noise to the audience sitting on other seats, causing discomfort. May give. Also,
In theaters, performances are performed regardless of the number of spectators, but when the number of unused seats is large and the number of unused seats is large, driving speakers or bodily sensation transducers of unused seats wastes power, The operating cost of the theater increases.

[0003]

SUMMARY OF THE INVENTION In view of the foregoing, the present invention has been made in consideration of the above problem. In an acoustic seat equipped with a speaker or a bodily-sensing vibrator, the speaker or bodily-sensing vibrator is driven when no one is sitting on the seat. It is an object to prevent noise from being generated and power from being wasted.

[0004]

According to the first aspect of the present invention, there is provided an acoustic seat equipped with a speaker or a body-sensing vibrator, wherein a seat cushion is rotatably mounted so as to fall down on a seat back. A sensor for detecting the fall of the seat cushion is attached to the seat cushion, and control is performed so that a drive current does not flow from the audio amplifier to the speaker or the body-sensing vibrator when the seat cushion is folded. The invention according to claim 2 is an acoustic seat equipped with a speaker or a bodily-sensing vibrator, wherein a sensor for detecting the presence or absence of a occupant is attached to a seat cushion, and the speaker or the bodily sensation is output from an audio amplifier when there is no occupant. It is characterized in that control is performed so that a driving current does not flow to the vibrator. The invention according to claim 3 is an acoustic seat equipped with a speaker or a bodily-sensing vibrator, wherein a sensor for detecting deformation due to seating of a seat cushion is attached, and when the seat cushion is not deformed, the audio amplifier changes the speaker. Or controlling the driving current so as not to flow to the bodily sensation vibrator.
The invention according to claim 1 is the acoustic sheet according to claim 1 or 3, wherein a mercury switch is used for the sensor.

[Action and Effect of the Invention]

[0005] In general, a seat installed in a theater has a passage for spectators between a seat cushion of a back row seat and a seat back of a front row seat. Therefore, the passage is widened by lowering the seat cushion on the seat back. In order to be able to do this, a flip-up sheet is used. According to the first aspect of the present invention, in a seat in which the seat cushion can be laid down on the seat back in order to widen the passage, in a state where the seat cushion is laid down on the seat back, that is, no one sits on the seat. When the speaker is not in use, the current from the amplifier does not flow to the speaker or sensory vibrator, so the sound or vibration from the speaker or sensory sensor that is not used is transmitted to the audience seated on other seats as noise. There is no. Also,
It is possible to prevent waste of power due to driving of a speaker or a bodily-sensing vibrator of an unused sheet. Claim 2
According to the invention described in the above, when there is no occupant, no current flows through the speaker or the body vibrator, so that it is possible to prevent noise from being generated from the speaker or the body vibrator of the seat where no one is seated, and It is possible to prevent power consumption of unused sheets. According to the third aspect of the present invention, when the seat is not deformed because there is no occupant, no current flows through the speaker or the bodily sensation vibrator. Waste can be prevented. According to the invention described in claim 4, a mercury switch is used as a sensor for detecting the lodging of the seat back and a sensor for detecting the seating deformation of the seat cushion, and the mercury switch is a small amount enclosed in a switch case. When the switch is tilted, the mercury moves by gravity to contact the electrode pair inside the case or open and close the circuit by utilizing the separation from the electrode pair. Therefore, simply by attaching the mercury switch to the seat cushion, it is possible to reliably detect the lodging of the seat cushion and deformation due to seating of the seat cushion.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. In the drawings, an acoustic sheet 10 according to an embodiment of the present invention is shown. The acoustic seat 10 is a seat suitable for installation in a theater, and includes a seat cushion 11.
Is a seat back 13 which is rotatable up and down by a hinge 12.
And is urged by a spring (not shown) in a direction to fall down on the seat back 13. For this reason, when no one is sitting on the seat cushion 11, FIG.
Since the seat cushion 11 is automatically raised until the seat cushion 11 falls down on the seat back 13 as shown by a chain line, it can be widely used as a passage between the rear row seat and the front row seat.

[0007] The seat back 13 of the acoustic sheet 10
A speaker 14 is mounted on the back of the speaker. Further, a mercury switch 20 is fixed to the seat cushion 11.

As shown in FIG. 2, the mercury switch 20 has a structure in which an inert gas such as argon gas, a small amount of mercury 22, and a pair of terminals 23 are sealed in a plastic case 21. When the case 21 is tilted, mercury is 22 due to gravity.
It moves and contacts the terminal pair 23 or separates from the terminal pair 23. Since the mercury 22 has conductivity, when the mercury 22 comes into contact with the terminal pair 23, conduction between the two terminals 23 is established. This mercury switch 20
Is arranged as a switch for opening and closing a circuit between the audio amplifier 30 and the speaker 14 mounted on the seat back as shown in FIG.

As shown in FIG. 1, when the seat cushion 11 is rotated to the use position, the side of the case to which the terminal pair 23 is fixed faces vertically downward, and the seat cushion 11 falls down on the seat back 13, as shown in FIG. When this is done, it is arranged and fixed on the seat cushion 11 such that the surface to which the terminal pair 23 is fixed faces obliquely upward from horizontal.

The structure of the acoustic seat 10 according to the present embodiment is as described above. The seat cushion 11 is raised by a spring and falls down on the seat back 13.
That is, when the sheet 10 is not used, the mercury 22 inside the mercury switch 20 moves by gravity and the terminal pair 2
3 is in contact with the side surface opposite to the surface to which the terminal 3 is fixed, and is located at a position distant from the terminal pair 23. Therefore, since the circuit between the audio amplifier 30 and the speaker 14 is opened, the speaker 14 is not driven.
On the other hand, when the audience leans forward and sits down until the seat cushion 11 becomes horizontal, the mercury 22 of the mercury switch 20 moves by gravity and contacts the terminal pair 23. As a result, conduction is established between the two terminals 23, so that current flows from the audio amplifier 30 to the speaker 14, and sound is output from the speaker 14.

According to the acoustic seat 10 of the present embodiment, no one is seated on the seat 10 and no current flows from the audio amplifier 30 to the speaker 14 when the seat cushion 11 is laid down on the seat back 13. And waste of power can be prevented. In addition, it is possible to prevent sounds and vibrations emitted from the speaker 14 of the unused seat 10 from being transmitted as noise to an audience seated on another seat 10.

Next, an acoustic sheet 40 according to another embodiment of the present invention will be described with reference to FIG. The acoustic sheet 4
The seat cushion 41 and the seat back 42 are integrally fixed. The speaker 14 is mounted on the back of the seat back 42, and the mercury switch 20 is mounted on the seat cushion 41.

The mercury switch 20 includes a seat cushion 4
When nobody is seated on 1, that is, when the switch case 21 is in an expanded state, the bottom surface of the switch case 21 is tilted slightly above the horizontal, and as shown by a two-dot chain line in FIG.
Switch case 2 when is deformed and sinks due to seating
1 is attached to the seat cushion 41 so that the bottom surface is slightly inclined below horizontal.

The structure of the acoustic seat 40 according to the present embodiment is as described above. When no one is seated on the seat cushion 41, the seat cushion 41 is in an expanded state. Since the case 21 is inclined upward, the mercury 22 in the case 21 moves by gravity until it contacts the side opposite to the side on which the terminal pair 23 is fixed, and is separated from the terminal pair 23. As a result, the terminals 23 become non-conductive, and no current flows from the audio amplifier 30 to the speaker 14.

When the user sits on the seat cushion 41, the seat cushion 41 is deformed and sinks, so that the switch case 21 tilts downward, and the mercury 22 moves by gravity and contacts the terminal pair 23. As a result, conduction between both terminals 23 occurs, and current flows from the audio amplifier 30 to the speaker 14.

According to the acoustic seat 40 according to the present embodiment, the presence or absence of a seated person is detected by detecting the sinking deformation of the seat cushion 41 due to seating with the mercury switch 20, and the seat where no one is seated. 40 speakers 14
Is controlled so that the current is not supplied from the audio amplifier 30 to the other seats 4.
0 can be prevented from being transmitted to the occupant.

Incidentally, the acoustic sheet 1 according to the present embodiment.
At 0 and 40, the seat provided with the speaker 14 has been described. However, the seat is not used by applying to the acoustic seat provided with the body vibrator disclosed in Japanese Utility Model Laid-Open No. 6-7389, for example. At this time, control can be performed so that the drive current does not flow through the bodily sensation vibrator. Also,
Although the mercury switch 20 is used as a sensor for detecting the lodging of the seat cushion 21 and a sensor for detecting the presence or absence of a seated person in the seat cushion 41, the sensor is not limited to this.
It is also possible to use a pressure sensor for detecting the weight at the time of sitting as a sensor for detecting the presence or absence of a seated person.

[Brief description of the drawings]

FIG. 1 is a side view schematically showing an acoustic sheet according to an embodiment of the present invention.

FIG. 2 is a sectional view showing a mercury switch attached to the acoustic sheet.

FIG. 3 is an audio circuit diagram of the acoustic sheet.

FIG. 4 is a side view schematically showing an acoustic sheet according to another embodiment of the present invention.

[Explanation of symbols]

10, 40: acoustic seat, 11, 41: seat cushion, 13, 42: seat back, 14: speaker,
20 ... Mercury switch.

Claims (4)

[Claims] An acoustic seat equipped with a speaker or a body-sensing vibrator, comprising a seat cushion rotatably mounted on a seat back so as to fall down, and a sensor for detecting the fall of the seat cushion on the seat cushion. An acoustic seat, which is mounted and controlled so that a drive current does not flow from the audio amplifier to the speaker or the body-sensing vibrator when the seat cushion is lying down. 2. An acoustic seat equipped with a speaker or a sensory vibrator, wherein a sensor for detecting the presence or absence of a occupant is mounted on a seat cushion, and when no occupant is present, the sensor is driven from an audio amplifier to the speaker or the sensory vibrator. An acoustic sheet characterized by controlling so that current does not flow. 3. An acoustic seat equipped with a speaker or a sensory vibrator, wherein a sensor for detecting deformation due to seating of a seat cushion is mounted, and when the seat cushion is not deformed, the speaker or the sensory vibrator is output from an audio amplifier. An acoustic sheet characterized by controlling so that a driving current does not flow. 4. The acoustic sheet according to claim 1, wherein a mercury switch is used for the sensor.