JP5747594B2 - Notification device - Google Patents

Description

  The present invention relates to a notification device.

  Some of them, such as advertisements, signs, landmarks, etc., which have an information display surface for displaying some information, use the force applied to the information display surface to call attention to the person. Patent Document 1 discloses a technique for rotating a portion corresponding to an information display surface of an advertising tower using wind force. Patent Document 2 describes that a windmill having a plurality of blades (that is, an information display surface) containing advertising texts and pictures is attached to an upper end portion of a climbing column.

JP 2006-330139 A JP 2006-195398 A

  According to the techniques described in Patent Documents 1 and 2, depending on the rotation speed of the information display surface, it may be difficult for a person to visually recognize the information displayed there. In addition, since the information display surface rotates, when the person stops at a position where it is difficult for a person to visually recognize, the person may not notice the presence of the information display surface.

  The present invention makes it possible to give a person around a notifying device that displays information on the display surface an opportunity to easily face the information by facing the display surface, and display the contents of the information at the opportunity. It is intended to be communicated by other methods.

  In order to solve the above-described problems, the present invention is a display surface that is formed of a material that allows sound to pass through and displays information, a display unit that includes the display surface, and a position on the back surface side of the display unit, the display surface A sound emitting surface provided at a position overlapping the display surface when viewed from a direction perpendicular to the display surface, the direction from the sound emitting surface toward the display surface, and perpendicular to the display surface An electrostatic speaker having directivity in the direction and emitting a sound corresponding to an audio signal from the sound emitting surface, and supporting the display unit and the electrostatic speaker, and the display surface and the sound emitting surface are overlapped. And a mechanism capable of changing the posture or position of the display unit and the electrostatic speaker while maintaining the state.

In the present invention, the detection unit that detects that the amount of change per unit time by the mechanism of the posture or the position of the display unit and the electrostatic speaker is equal to or greater than a threshold value, the display unit, and the static speaker Supply means for supplying the audio signal to the electrostatic speaker when the detecting unit detects that the change amount of the posture or the position of the electric speaker is equal to or greater than a threshold value. .

  Also, in the present invention, the display unit and the electrostatic speaker in a stacked state have a plurality of sets, and the supply means stores audio data corresponding to each of the electrostatic speakers, For the electrostatic speaker, audio data corresponding to the electrostatic speaker may be read and an audio signal corresponding to the audio data may be supplied.

  Further, in the present invention, the mechanism includes a support column, and supports the display unit and the electrostatic speaker so that the display unit and the electrostatic speaker can rotate around the support column. Also good.

  According to the present invention, it is possible to give a person who is around a notification device that displays information on the display surface an opportunity to easily view the information by facing the display surface, and the content of the information at the opportunity Can be transmitted by means other than display.

It is the front view which showed the external appearance of the alerting | reporting apparatus 1 which concerns on 1st Embodiment of this invention. It is the block diagram which showed the hardware constitutions of the control unit which concerns on the same embodiment. It is a figure which shows the structure of the electrostatic speaker which concerns on the same embodiment. It is the circuit diagram which showed the electrical structure of the electrostatic speaker and signal processing part which concern on the same embodiment. It is a flowchart which shows the procedure of the process of the control part which concerns on the same embodiment. It is the perspective view which showed the external appearance of the alerting | reporting apparatus which concerns on 2nd Embodiment of this invention. It is a figure which shows the structure of the alerting | reporting part which concerns on the same embodiment. It is a figure showing an example of a voice management table concerning the embodiment. It is the perspective view which showed the external appearance of the alerting | reporting apparatus which concerns on a modification. It is the perspective view which showed the external appearance of the alerting | reporting apparatus which concerns on a modification. It is the perspective view which showed the external appearance of the alerting | reporting apparatus which concerns on a modification. It is the block diagram which showed the hardware constitutions of the control unit which concerns on a modification. It is the front view and top view which showed the external appearance of the alerting | reporting apparatus which concerns on a modification. It is the front view and top view which showed the external appearance of the alerting | reporting apparatus which concerns on a modification. It is the perspective view and exploded view which showed the external appearance of the alerting | reporting apparatus which concerns on a modification.

Hereinafter, an embodiment of the present invention will be described using an example in which a notification device according to the present invention is applied to a banner.
[First Embodiment]
(overall structure)
FIG. 1 is a front view showing an appearance of a notification device 1 according to the first embodiment of the present invention.
The notification device 1 includes a notification unit 10 that notifies information, a support unit 20 that is a mechanism that supports the notification unit 10 in a state in which the posture and position of the notification unit 10 can be changed, and the support unit 20 is fixed and placed on the ground or floor. And a pedestal 30 to be removed.

(Configuration of notification unit 10)
The notification unit 10 is a rectangular sheet-like member that is long in the vertical direction when viewed from the front. In the short side (hereinafter referred to as short side) and the long side (hereinafter referred to as long side) including any one of the four corners of the notification unit 10 (here, the upper left corner in the figure), A plurality of loop-shaped hanging straps 11 are provided at predetermined intervals. The notification unit 10 includes an electrostatic speaker 12 as sound emitting means and a display unit 13 as display means. The electrostatic speaker 12 is made of a flexible material, and generates a sound corresponding to the sound signal when the sound signal is input. Since the electrostatic speaker 12 is a so-called flat speaker, the sound wave emitted from the electrostatic speaker 12 becomes a plane wave having directivity. The display unit 13 is a sheet-like member made of a flexible material that can pass through sound, such as a woven cloth or a non-woven cloth. There are two display units 13, and on each surface (display surface), an image representing some information such as characters, pictures, photographs, etc. is displayed by a method such as printing. Act as an advertisement. Nothing is displayed on the back surface of each display unit 13. Each display unit 13 is stacked so as to cover one surface and the other surface of the sheet-like electrostatic speaker 12 and so that the back surface of each display unit 13 is in contact with each surface. ing. That is, the sound emission surface of the electrostatic speaker 12 is located at a position overlapping the display surface when viewed from a direction perpendicular to the display surface. Therefore, the sound emitted from the electrostatic speaker 12 has directivity in the direction from the sound emitting surface toward the display surface and in the direction perpendicular to the display surface of the display unit 13. When a sound related to the image displayed on the display unit 13 is emitted from the electrostatic speaker 12, for example, a sound explaining the content of a product to be advertised, the sound passes through the display unit 13 and is displayed. Recognized by the person watching part 13. This sound will also function as an advertisement for products and services. In FIG. 1, a part of the display unit 13 is omitted for convenience of explanation, and a part of the electrostatic speaker 12 is exposed without being covered by the display unit 13. All of the electrostatic speaker 12 is covered with the display unit 13.

(Structure of the support part 20)
The support unit 20 includes a first support unit 21, a second support unit 22, a rotation unit 23, and a rotation detection unit 24. The first support portion 21 is a cylindrical member such as a pipe formed of, for example, synthetic resin or metal. The first support portion 21 is longer than the long side of the notification portion 10 and is inserted into the hanging strap 11 provided on the long side of the notification portion 10. A lower end of the first support portion 21 is fixed to the pedestal portion 30, and a rotating portion 23 having a rotatable portion is provided at the upper end thereof. Similar to the first support portion 21, the second support portion 22 is a cylindrical member such as a pipe formed of, for example, synthetic resin or metal. The second support portion 22 is slightly longer than the short side of the notification portion 10 and is inserted into the hanging strap 11 provided on the short side of the notification portion 10. One end 221 of the second support portion 22 is inserted into a hole provided in a rotatable portion of the rotating portion 23 and is fixed to the rotating portion 23 by a fixing means such as a screw. Thus, the longitudinal direction of the second support portion 22 is in a state of forming a predetermined angle (90 degrees in the present embodiment) with respect to the longitudinal direction of the first support portion 21, and these first support portions The notification unit 10 is supported by the unit 21 and the second support unit 22. Since the 2nd support part 22 can rotate centering on the rotation part 23 provided in the upper end of the 1st support part 21, the alerting | reporting part 10 can rotate centering | focusing on the 1st support part 21. As shown in FIG. Accordingly, when wind blows from a certain direction to the notification device 1, the second support portion 22 and the notification portion 10 are rotated by the force of the wind, and the end portion 221 of the second support portion 22 is rotated. Is located on the windward side and the end 222 is located on the leeward side. That is, while maintaining the state where the display surface of the display unit 13 and the sound emitting surface of the electrostatic speaker 12 are overlapped, the position of the display unit 13 and the electrostatic speaker 12 with respect to the first support unit 21 according to the wind direction. The direction (that is, the posture) of the display surface of the display unit 13 and the sound emission surface of the electrostatic speaker 12 is changed. At this time, if the notification unit 10 itself is greatly deformed by receiving the wind, the wind force received by the notification unit 10 cannot be transmitted to the second support unit 22. The notification unit 10 needs to have such strength that the constant wind force does not greatly deform, that is, the strength at which the notification unit 10 can rotate by transmitting the wind force received by the notification unit 10 to the second support unit 22. The rotation detection unit 24 is, for example, a rotary potentiometer or a rotary encoder, and outputs a signal (hereinafter referred to as a rotation signal) indicating that the rotation unit 23 has rotated by a predetermined angle every time the rotation unit 23 rotates by a predetermined angle. The rotation detection unit 24 is provided in a place where the rotation of the rotation unit 23 can be detected, for example, inside the first support unit 21.

(Configuration of pedestal 30)
The pedestal portion 30 is a disk-shaped member made of, for example, synthetic resin or metal. A hole is provided at a substantially central position on the upper surface of the pedestal part 30, and the lower end of the first support part 21 is inserted into this hole. Thereby, the first support portion 21 is fixed to the pedestal portion 30. Inside the pedestal 30, a control unit 33 that performs electrical control of the notification device 1 is provided. The control unit 33 and the rotation detection unit 24 are electrically connected by wirings that are passed through holes provided in the pedestal unit 30 and the first support unit 21. The control unit 33 and the electrostatic speaker 12 are passed through holes provided in the upper surface of the pedestal portion 30 and the lower end of the first support portion 21, and are suspended on the short side of the notification portion 10. The wires 11 are electrically connected by a wire routed around the cord 11. This wiring is connected to a mechanism (for example, a slip ring) for transmitting electric power and signals via an annular electric circuit and a brush arranged concentrically with respect to the rotating body inside the first support portion 21. Therefore, the possibility of hindering the rotation of the notification unit 10 is small. The means for electrically connecting the control unit 33 and the electrostatic speaker 12 is not limited to a slip ring, and may be any structure that has a low possibility of preventing the notification unit 10 from rotating.

(Hardware configuration of control unit 33)
Next, the hardware configuration of the control unit 33 will be described with reference to the block diagram of FIG. The control unit 33 includes a control unit 331 and a signal processing unit 332, and is electrically connected to the rotation detection unit 24, the electrostatic speaker 12, and the power supply unit 333. The power supply unit 333 is connected to a commercial power supply by a power cord (not shown) and controls power supply to the notification device 1. The signal processing unit 332 performs signal processing such as amplifying the audio signal output from the control unit 331 and then outputs the signal to the electrostatic speaker 12. The control unit 331 includes an arithmetic device such as a CPU (Central Processing Unit) and a memory such as a ROM (Read Only Memory) and a RAM (Random Access Memory). The ROM stores audio data representing sound related to the image displayed on the display unit 13, a program executed by the CPU, and a threshold value described later. The control part 331 controls each part of the alerting | reporting apparatus 1 by reading a program from ROM by CPU, loading it to RAM, and running it. For example, the control unit 331 calculates the rotation angle of the rotation unit 23 per unit time by counting the rotation signal output from the rotation detection unit 24 for each predetermined period. And the control part 331 detects whether the angle which the rotation part 23 rotated per unit time is more than a threshold value. That is, the control unit 331 functions as a detection unit that detects that the change amount of the posture of the notification unit 10 is equal to or greater than the threshold value. When the control unit 331 detects that the rotation angle of the rotation unit 23 per unit time is equal to or greater than the threshold, the control unit 331 reads out the audio data and outputs an audio signal corresponding to the audio data to the signal processing unit 332. On the other hand, if the angle of rotation of the rotating unit 23 per unit time is less than the threshold, no audio signal is output to the signal processing unit 332. The audio signal output to the signal processing unit 332 is supplied to the electrostatic speaker 12. That is, the control unit 331 and the signal processing unit 332 function as a supply unit that supplies an audio signal to the electrostatic speaker when it is detected that the amount of change in the posture of the notification unit 10 is equal to or greater than a threshold value.

  Thus, sound is emitted from the electrostatic speaker 12 only when the wind direction changes by a certain magnitude or more within a certain period of time. Regardless of the change in the wind direction, it may be considered that the person in the vicinity of the notification device 1 feels troublesome if the sound is always emitted, but the sound is emitted only when the wind direction changes as described above. If so, such annoyance can be suppressed. Furthermore, since the sound wave emitted from the electrostatic speaker 12 is a plane wave having directivity in a direction perpendicular to the sound emitting surface of the electrostatic speaker 12, a person who is in a position where the sound can reach is static. It faces the sound emitting surface of the electric speaker 12, that is, the display surface of the display unit 13. When the person and the display unit 13 are in such a positional relationship, it becomes easier for the person to visually recognize the display surface. That is, when a person notices that a sound is emitted from the notification device 1 and looks at the direction in which the sound is generated, the person can easily see the image because the display surface of the display unit 13 faces the user. Therefore, it is possible to expect a greater advertising effect compared to the case where the configuration of the notification device 1 is not provided.

(About the electrostatic speaker 12)
Here, the electrostatic speaker 12 will be described. FIG. 3 is a diagram showing the structure of the electrostatic speaker 12. The electrostatic speaker 12 includes a vibrating body 121, elastic members 122U and 122L, and electrodes 123U and 123L. The elastic members 122U and 122L have the same configuration, and the electrodes 123U and 123L have the same configuration. For this reason, when it is not necessary to distinguish both about each member, description of "U" and "L" is abbreviate | omitted.

(Configuration of each part of the electrostatic speaker 12)
First, each part constituting the electrostatic speaker 12 will be described.
The vibrating body 121 is made of a synthetic resin film having insulation and flexibility such as PET (polyethylene terephthalate) and PP (polypropylene), and a conductive metal on one surface of the film. It is the sheet-like structure which vapor-deposited and formed the electrically conductive film. The shape of the vibrating body 121 is a rectangle that is long in the vertical direction when viewed from the front.

  The elastic member 122 is a non-woven fabric, for example, and allows passage of air and sound. The elastic member 122 has elasticity, and is deformed when a force is applied from the outside, and returns to its original shape when the force applied from the outside is removed. The shape of each elastic member 122 is a rectangle that is long in the vertical direction when viewed from the front direction, like the vibrating body 121.

  The electrode 123 has, for example, a structure in which a conductive resin film is formed by vapor-depositing a conductive metal on one surface of a film using a synthetic resin film having insulating properties and flexibility such as PET or PP as a base material. Yes. The shape of each electrode 123 is a rectangle that is long in the vertical direction when viewed from the front direction, like the vibrating body 121. The electrode 123 has a plurality of through holes (not shown) penetrating from the front surface to the back surface, and sound can be passed through the holes.

(Structure of electrostatic speaker 12)
Next, the structure of the electrostatic speaker 12 will be described. The vibrating body 121 is disposed between the elastic member 122U and the elastic member 122L. An adhesive is applied with a width of several millimeters inward from each edge of the vibrating body 121, and the vibrating body 121 is fixed to the elastic member 122U and the elastic member 122L by this adhesive action. A portion of the vibrating body 121 where the adhesive is not applied is not fixed to the elastic member 122U and the elastic member 122L. An adhesive is applied with a width of several millimeters inward from each edge of the electrode 123U, and the electrode 123U is fixed to the elastic member 122U by this adhesive action. A portion of the electrode 123U where the adhesive is not applied is not fixed to the elastic member 122U. Similarly, an adhesive is applied with a width of several millimeters inward from each edge of the electrode 123L, and the electrode 123L is fixed to the elastic member 122L by this adhesive action. The portion of the electrode 123L where the adhesive is not applied is not fixed to the elastic member 122L. The conductive film side of the electrode 123U is in contact with the elastic member 122U, and the conductive film side of the electrode 123L is in contact with the elastic member 122L.

(Electrical configuration of the electrostatic speaker 12)
Next, the electrical configuration of the electrostatic speaker 12 will be described.
FIG. 4 is a circuit diagram showing the electrical configuration of the electrostatic speaker 12 and the signal processing unit 332. A signal processing unit 332 is connected to the electrostatic speaker 12. The signal processing unit 332 includes a transformer 336, an amplifier 334, and a bias power source 335. The amplifier 334 amplifies and outputs the audio signal input to the input side terminal. A terminal T1 on the input side of the transformer 336 is connected to the amplifier 334 via the resistor R1. The other terminal T2 on the input side of the transformer 336 is connected to the amplifier 334 via the resistor R2. A terminal T4 on the output side of the transformer 336 is connected to the conductive portion of the electrode 123U. The other terminal T5 on the output side of the transformer 336 is connected to the conductive portion of the electrode 123L. A midpoint terminal T3 of the transformer 336 is connected to a ground GND, which is a reference potential of the signal processing unit 332, via a resistor R3. One end of the bias power source 335 is connected to the vibrating body 121 via the resistor R4, and the other end is connected to the ground GND that is the reference potential of the signal processing unit 332. The bias power source 335 applies a DC bias to the vibrating body 121. In this configuration, the electrostatic speaker 12 operates as a push-pull electrostatic speaker when a voltage corresponding to the audio signal input to the amplifier 334 is applied to the electrode 123. Specifically, it is as follows.

  When an audio signal is input to the amplifier 334, a voltage corresponding to the input audio signal is applied from the transformer 336 to the electrode 123U and the electrode 123L. Then, when a potential difference is generated between the electrode 123U and the electrode 123L due to the applied voltage, the vibrating body 121 between the electrode 123U and the electrode 123L is attracted to one side of the electrode 123U and the electrode 123L. The electrostatic force works. For example, assume that an audio signal is input to the amplifier 334 and the amplified audio signal is supplied to the transformer 336, whereby a positive voltage is applied to the electrode 123U and a negative voltage is applied to the electrode 123L. In this case, since a positive voltage is applied to the vibrating body 121 by the bias power source 335, the vibrating body 121 repels the electrode 123U to which a positive voltage is applied, while a negative voltage is applied. The electrode 123L is attracted and displaced to the electrode 123L side. Also, assume that an audio signal is input to the amplifier 334 and the amplified audio signal is supplied to the transformer 336, so that a negative voltage is applied to the electrode 123U and a positive voltage is applied to the electrode 123L. In this case, the vibrating body 121 repels the electrode 123L to which a positive voltage is applied, and is attracted to the electrode 123U to which a negative voltage is applied and is displaced toward the electrode 123U.

  As described above, the vibrating body 121 is displaced toward the electrode 123U or the electrode 123L according to the audio signal, and the direction of displacement is sequentially changed, so that the vibrating body 121 vibrates. A sound wave corresponding to the state of vibration, specifically, frequency and amplitude is generated from the vibrating body 121. The generated sound wave passes through the elastic member 122, the electrode 123, and the display unit 13 and is radiated to the outside of the notification unit 10.

(Operation)
Next, the operation of the embodiment will be described.
FIG. 5 is a flowchart illustrating a processing procedure when the control unit 331 of the notification device 1 executes a program stored in the ROM. Each time the notification unit 10 receives wind and the rotation unit 23 rotates by a predetermined angle, the rotation detection unit 24 outputs a rotation signal. The control unit 331 calculates the rotation angle of the rotation unit 23 per unit time by counting the rotation signal output from the rotation detection unit 24 for each predetermined unit period (step S510). Next, the control part 331 of the alerting | reporting apparatus 1 determines whether the angle which the rotation part 23 rotated per unit time is more than the threshold value memorize | stored in ROM (step S520). When the rotation angle of the rotation unit 23 per unit time is less than the threshold (step S520; NO), the control unit 331 does not output the audio signal to the signal processing unit 332, and performs the process of step S510. Return. On the other hand, when the rotation angle of the rotating unit 23 per unit time is equal to or larger than the threshold (step S520; YES), the control unit 331 reads out audio data from the ROM and performs signal processing on the audio signal corresponding to the audio data. The data is output to the unit 332 (step S530). The control unit 331 continues outputting this audio signal for a certain period. The signal processing unit 332 amplifies the input audio signal and outputs the amplified audio signal to the electrostatic speaker 12. The electrostatic speaker 12 generates a sound corresponding to the audio signal.

  Thus, in the first embodiment, the sound emission surface of the electrostatic speaker 12 is provided at a position that overlaps the display surface when viewed from the direction perpendicular to the display surface of the display unit 13, and A sound having directivity is emitted in a direction from the sound emitting surface of the electrostatic speaker 12 toward the display surface and perpendicular to the display surface. Regardless of the positional relationship of the person with the notification device 1, since the posture of the notification unit 10 changes depending on the wind direction, the linear direction from the notification unit 10 to the person and the electrostatic speaker 12 emits the signal. In some cases, the direction in which the sound wave travels matches. At this time, the person notices that a sound is emitted from the notification device 1. In particular, since the sound wave emitted from the electrostatic speaker 12 is a directional plane wave, even if a person is located far from the notification device 1, the sound is likely to reach that person. And when a person sees the direction of the sound generation, the display surface of the display unit 13 is facing itself, so that the image displayed there is easy to see, and depending on the image, It will be easier to understand the content of the information provided. Therefore, it becomes possible to give the person around the notification device the opportunity to easily view the information by directly facing the display surface, and to convey the contents of the information by a method other than the display at the opportunity. Is possible. For example, when an image is used for advertising purposes, a greater advertising effect can be expected. Further, since the sound is emitted only for a certain period thereafter when the wind direction changes, it is possible to suppress the annoyance that a person can always hear the sound.

[Second Embodiment]
Next, a second embodiment of the present invention will be described. In the first embodiment, the notification device 1 includes one notification unit 10, whereas the notification device according to the second embodiment includes a plurality of notification units 10. That is, the notification device includes a plurality of sets of the display unit 13 and the electrostatic speaker 12 that are stacked on each other. For this reason, in the second embodiment, in addition to the configuration of the notification unit 10, the support unit 20, and the like, the content of the process for generating sound in the electrostatic speaker 12 is different from that of the first embodiment. The configuration and operation are the same as in the first embodiment. In the description of the following drawings, the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

  FIG. 6 is a perspective view showing an appearance of a notification device 1a according to the second embodiment of the present invention. In the notification device 1a, the notification units 10a-1, 10a-2, and 10a-3 for reporting information, the support unit 20a that supports the notification units 10a-1, 10a-2, and 10a-3, and the support unit 20a are fixed. And a pedestal 30 placed on the ground or floor.

(Configuration of notification units 10a-1, 10a-2, 10a-3)
Since all the configurations of the notification units 10a-1, 10a-2, and 10a-3 are the same, only the configuration of the notification unit 10a-1 will be described here. In addition, when it is not necessary to distinguish each of the notification units 10a-1, 10a-2, and 10a-3, they are referred to as a notification unit 10a. Moreover, when it is not necessary to distinguish each component provided in the alerting | reporting part 10a, a part of code | symbol is abbreviate | omitted similarly to the alerting | reporting part 10a. FIG. 7 is a diagram illustrating the structure of the notification unit 10a-1. As shown in the figure, the notification unit 10a-1 includes electrostatic speakers 12a-11 and 12a-12 as sound emitting means, display units 13a-11 and 13a-12 as display means, and sound absorbing means. Sound-absorbing sheet 14a. The sound absorbing sheet 14a is arranged between the electrostatic speaker 12a-11 and the electrostatic speaker 12a-12, and the sound generated from the electrostatic speaker 12a-11 and the electrostatic speaker 12a-12 are generated. Suppresses the interference of sound. Images such as characters, pictures, and photographs (not shown) are displayed on the surfaces of the display units 13a-11 and 13a-12, and these images function as advertisements for products and services. The display unit 13a-11 is stacked so as to cover a surface of the electrostatic speaker 12a-11 that does not face the sound absorbing sheet 14a. In this configuration, when a sound related to the image displayed on the display unit 13a-11 is emitted from the electrostatic speaker 12a-11, the sound passes through the display unit 13a-11, and the display unit 13a-11. Recognized by those who are watching. The display unit 13a-12 is stacked so as to cover a surface of the electrostatic speaker 12a-12 that does not face the sound absorbing sheet 14a. In this configuration, when a sound related to the image displayed on the display unit 13a-12 is emitted from the electrostatic speaker 12a-12, the sound passes through the display unit 13a-12 and the display unit 13a-12. Recognized by those who are watching.

(Configuration of support portion 20a)
Returning to the description of FIG. The support unit 20 a includes a first support unit 21, second support units 22 a-1, 22 a-2, 22 a-3, a rotation unit 23 a, and a rotation detection unit 24. The configurations of the second support portions 22a-1, 22a-2, 22a-3 are the same. The 1st support part 21 is inserted in the hanging strap 11 provided in the long side of alerting | reporting part 10a-1, 10a-2, 10a-3. The lower end of the first support portion 21 is fixed to the pedestal portion 30, and a rotating portion 23a having a rotatable portion is provided at the upper end thereof. The second support portions 22a-1, 22a-2, and 22a-3 are all cylindrical members such as pipes made of synthetic resin or metal. The 2nd support part 22a-1 is inserted in the hanging strap 11 provided in the short side of the alerting | reporting part 10a-1, and the 2nd support part 22a-2 is the hanging strap 11 provided in the short side of the alerting | reporting part 10a-2. The second support portion 22a-3 is inserted into the hanging strap 11 provided on the short side of the notification portion 10a-3. One end of the second support part 22a-1, one end of the second support part 22a-2, and one end of the second support part 22a-3 are fixed to the rotating part 23a by fixing means such as screws. When this notification device 1a is viewed from above, the longitudinal direction of each of the second support portions 22a-1, 22a-2, 22a-3 is in a state that forms a predetermined angle (120 ° in this embodiment). ing. Further, the longitudinal direction of the second support portions 22a-1, 22a-2, 22a-3 is in a state that forms a predetermined angle (90 degrees in the present embodiment) with respect to the longitudinal direction of the first support portion 21. It has become. The notification units 10a-1, 10a-2, and 10a-3 include the second support unit 22a-1, the first support unit 21, the second support unit 22a-2, the first support unit 21, and the second support unit 22a-3. And it is supported by the 1st support part 21, respectively.

  As described above, since the second support portions 22a-1, 22a-2, 22a-3 can rotate around the rotating portion 23a provided at the upper end of the first support portion 21, the notification portions 10a-1, 10a-2 and 10a-3 are rotatable about the longitudinal direction of the first support portion 21 as a central axis. Therefore, when the wind blows from the certain direction with respect to this alerting | reporting apparatus 1a, 2nd support part 22a-1, 22a-2, 22a-3 and alerting | reporting part 10a-1, 10a with the force of the wind. -2, 10a-3 rotate. The rotation detection unit 24 outputs a rotation signal every time the rotation unit 23a rotates by a predetermined angle. The rotation detection unit 24 is provided at a place where the rotation of the rotation unit 23a can be detected, for example, inside the first support unit 21.

(Configuration of pedestal 30)
The pedestal portion 30 is a disk-shaped member made of, for example, synthetic resin or metal. A hole is provided at a substantially central position on the upper surface of the pedestal part 30, and the lower end of the first support part 21 is inserted into this hole. Thereby, the first support portion 21 is fixed to the pedestal portion 30. A control unit 33a that performs electrical control of the notification device 1a is provided in the pedestal 30. The control unit 33a and the rotation detection unit 24 are electrically connected by wirings that pass through holes provided in the pedestal unit 30 and the first support unit 21, respectively. Further, the electrostatic speaker 12a of the control unit 33a and the notification unit 10a is passed through holes provided in the upper surface of the pedestal unit 30 and the lower end of the first support unit 21, and is provided on the short side of the notification unit 10a. It is electrically connected by the wiring routed around the suspended strap 11. In addition, since this wiring is connected to the slip ring inside the first support portion 21, there is little possibility of preventing the rotation of the rotating portion 23a. Therefore, the possibility that the rotation of the notification unit 10a is also prevented is small. The means for electrically connecting the control unit 33a and the electrostatic speaker 12a of the notification unit 10a is not limited to the slip ring, and may be any structure that has a low possibility of preventing the rotation of the rotating unit 23a.

(Hardware configuration of control unit 33a)
The hardware configuration of the control unit 33a is substantially the same as the hardware configuration of the control unit 33, and will be described with reference to FIG. The control unit 33 a includes a control unit 331 a instead of the control unit 331, and further includes a signal processing unit 332. The control unit 33a is connected to the power supply unit 333, the electrostatic speaker 12a of the notification unit 10a, and the rotation detection unit 24. Here, the notification unit 10a-1 includes electrostatic speakers 12a-11 and 12a-12, and the notification unit 10a-2 includes electrostatic speakers 12a-21 and 12a-22. It is assumed that the notification unit 10a-2 includes electrostatic speakers 12a-31 and 12a-32. The difference between the control unit 331 and the control unit 331a is the content stored in the memory. The memory of the control unit 331a stores sound data and programs representing sounds related to images displayed on the respective display units 13a, threshold values, and a sound management table 3311. Here, the voice management table 3311 will be described.

  FIG. 8 is a diagram showing an example of the voice management table 3311. In the voice management table 3311, “electrostatic speaker ID” and “voice data ID” are described in association with each other. The “electrostatic speaker ID” is information for identifying each electrostatic speaker 12a. “Audio data ID” is information for identifying audio data representing sound generated by each electrostatic speaker 12a. For example, the audio management table 3311 describes the audio data ID “A01” in association with the electrostatic speaker ID “12a-11”. In this case, the control unit 331a outputs an audio signal corresponding to the audio data having the audio data ID “A01” to the signal processing unit 332, so that the electrostatic speaker having the electrostatic speaker ID “12a-11”. The sound corresponding to the audio signal is generated at 12a-11. That is, the control unit 331a reads out the audio data corresponding to the electrostatic speaker 12a from the memory for each electrostatic speaker 12a and sets the audio signal corresponding to the audio data, that is, the electrostatic speaker 12a. An audio signal corresponding to the display content of the display unit 13a is supplied. In this way, the control unit 331a controls the audio signal supplied to each electrostatic speaker 12a based on the contents of the audio management table 3311, thereby generating the same sound on each electrostatic speaker 12a, Different sounds can be generated in each electrostatic speaker 12a.

  The CPU of the control unit 331a controls each unit of the notification device 1a by reading a program stored in the ROM, loading it into the RAM, and executing it. Specifically, as in the first embodiment, the control unit 331a counts the rotation signal output from the rotation detection unit 24 every predetermined unit period, so that the rotation unit 23a rotates per unit time. Calculate the angle. The control unit 331a outputs an audio signal corresponding to the audio data to the signal processing unit 332 when the rotation angle of the rotation unit 23a per unit time is equal to or greater than a threshold value, while the rotation unit 23a When the rotated angle is less than the threshold, an audio signal corresponding to the audio data is not output to the signal processing unit 332. That is, the notification device 1a generates a sound in each electrostatic speaker 12a only when the wind is blowing.

  According to the second embodiment described above, in addition to the same effects as the first embodiment, the display unit 13a and the electrostatic speaker 12a are provided so as to be rotatable around the rotating unit 23a. Has the effect of not only visually recognizing the display surface of a certain display unit 13a, but also being able to view sounds and images that change one after another due to rotation. Therefore, the display related to the advertisement in the notification device 1a can be expected to have a greater advertising effect than the case where the plurality of notification units 10 are not provided as in the notification device 1.

[Modification]
The contents of the above-described embodiment may be modified as follows. Each modification shown below may be implemented in combination as necessary.

(Modification 1)
In the embodiment described above, the second support portion 22 has a linear shape as viewed from the top surface, but may have a shape other than a straight line. FIG. 9 is a perspective view showing an appearance of the notification device 1b according to the first modification. As shown in the figure, the second support portions 22b-1 and 22b-2 are curved in a bow shape when viewed from above, and are fixed to the rotating portion 23b with the counterclockwise direction protruding. . The notification units 10-1 and 10-2 are supported by the second support units 22 b-1 and 22 b-2, and thus have a curved shape as viewed from the top. As described above, the notification units 10-1 and 10-2 are configured to be curved in a bow shape, so that the notification units 10-1 and 10-2 are difficult to release the wind force and the surface from which the wind force is easily released. It becomes easy to predict the direction of rotation when rotating about the first support portion 21 as the central axis. In addition, because of the action of the surface where it is difficult for the wind force to escape, it becomes easy to rotate around the first support portion 21 as the central axis, and therefore the angle at which the rotating portion 23b rotates per unit time tends to be greater than or equal to the threshold value. That is, there are many opportunities for sound to be emitted from the electrostatic speaker 12. Therefore, a person can easily notice the notification device 1b that has made a sound, and can expect a greater advertising effect.

(Modification 2)
In the above-described embodiment, the power supply unit 333 is connected to a commercial power supply by a power cord (not shown), but may be connected to other than the commercial power supply. For example, a power generation means (hereinafter referred to as a wind power generation unit) that converts power when rotating by receiving wind force into electric power may be provided in the notification device, and the power supply unit 333 may be connected to the wind power generation unit. FIG. 10 is a perspective view showing an appearance of a notification device 1c according to the second modification. The notification device 1c includes a pedestal unit 30 in which the control unit 33 is provided, a support unit 20 fixed to the pedestal unit 30, a notification unit 10 supported by the support unit 20, and a wind power generation unit that generates electricity. 40. The support unit 20 includes a first support unit 21, a second support unit 22, a rotation unit 23, and a rotation detection unit 24. The lower end of the first support portion 21 is fixed to the pedestal portion 30, and the rotating portion 23 and the wind power generation portion 40 are provided at the upper end. The wind power generation unit 40 includes a windmill 41, a rotating shaft 42, and a generator 43. The wind power generation unit 40 generates electric power by rotating the rotating shaft 42 by the wind force received by the windmill 41 and transmitting the rotational motion to the generator 43. The wind power generation unit 40 may charge a storage battery (not shown) with the generated electricity. And the power supply part 333 is connected to the wind power generation part 40 with the power cord which is not shown in figure, and controls the electric power supply to the alerting | reporting apparatus 1c. According to the second modification, the notification device 1c can generate the power consumed by the own device by the own device, and thus can be installed in a place where it cannot be connected to the commercial power source. Therefore, the notification device 1c can be installed in a place where there are many people regardless of the presence or absence of a commercial power supply, and a greater advertising effect can be expected.

(Modification 3)
In the above-described embodiment, the example in which the present invention is applied to the flag is described. However, the present invention may be applied to other than the flag.
In the above-described embodiment, the notification device 1 rotates the rotating unit 23 by the wind force, but the power source that rotates the rotating unit 23 is not limited thereto. The notification device may rotate the rotating unit with a power source such as a motor, for example, when the presence of a person is detected by a detection unit such as a sensor. FIG. 11 is a perspective view showing an appearance of a notification device 1d according to a modification. The notification device 1d includes a pedestal portion 30, a support portion 20d, and notification portions 10d-1, 10d-2, and 10d-3. Since all the configurations of the notification units 10d-1, 10d-2, and 10d-3 are the same, they are referred to as the notification unit 10d when it is not necessary to distinguish them. Moreover, when it is not necessary to distinguish each component provided in the alerting | reporting part 10d, a part of code | symbol is abbreviate | omitted similarly to the alerting | reporting part 10d.

  The notification unit 10d includes an electrostatic speaker 12 as a sound emitting unit, a display unit 13 as a display unit, and a detection unit 15 as a detection unit. The detection unit 15 is a human sensor using infrared rays, ultrasonic waves, or the like, detects whether or not a person is present at a position facing the notification unit 10d, and outputs a detection signal indicating that the person has been detected. For example, the detection unit 15-1 detects whether or not a person is present at a position facing the notification unit 10d-1, and the detection unit 15-2 is present at a position facing the notification unit 10d-2. The detection unit 15-3 detects whether or not a person is present at a position facing the notification unit 10d-3. In addition, although the detection part 15 is provided in the display surface of the alerting | reporting part 10d in the figure shown in FIG. 11, it is not restricted to this, It detects whether a person exists in the position facing the alerting | reporting part 10d. It may be provided in any place as long as it can be used.

  The support part 20 d includes a first support part 21, second support parts 22 d-1, 22 d-2, 22 d-3, a third support part 26 d, a rotating part 23 d, and a motor 29. A lower end of the first support portion 21 is fixed to the pedestal portion 30, and a rotating portion 23 d and a motor 29 are provided at the upper end. The rotating portion 23d rotates about the first support portion 21 as a central axis when a driving force is applied from the motor 29. In addition, although the motor 29 is provided in the upper end of the 1st support part 21 in the figure shown in FIG. 11, it is not restricted to this. The motor 29 may be provided in any place as long as it is provided in a place where a driving force can be applied to the rotating portion 23d. The second support portions 22d-1, 22d-2, 22d-3 are cylindrical members such as pipes formed of, for example, synthetic resin or metal. One ends of the second support portions 22d-1, 22d-2, and 22d-3 are inserted into the rotating portion 23d and fixed to the rotating portion 23d by fixing means such as screws. The other ends of the second support portions 22d-1, 22d-2, 22d-3 are inserted into the third support portion 26d and fixed to the third support portion 26d by fixing means such as screws. The third support portion 26d is a circular member made of, for example, synthetic resin or metal. The radius of the third support portion 26d is substantially the same as the length in the longitudinal direction of the second support portions 22d-1, 22d-2, and 22d-3. The circumference of the third support portion 26d is substantially the same as the sum of the lengths of the short sides of the notification portions 10. Further, the third support portion 26 d is inserted into the hanging strap 11 provided on the short side of each notification unit 10 and supports each notification unit 10. As described above, each notification unit 10 can rotate about the first support portion 21 as the central axis by rotating the rotation unit 23d by receiving a driving force from the motor 29.

(Hardware configuration of control unit 33d)
The hardware configuration of the control unit 33d is substantially the same as the hardware configuration of the control unit 33, and will be described with reference to FIG. The control unit 33d includes a control unit 331d, a signal processing unit 332, and a motor drive control unit 55, and is connected to the power source unit 333, the motor 29, the detection unit 15, and the electrostatic speaker 12 of each notification unit 10. . The ROM of the control unit 331d stores sound data and programs representing sounds related to images displayed on the display unit 13 of each notification unit 10, and a sound management table. When the detection signal is supplied from the detection unit 15, the control unit 331 d reads out audio data from the ROM and outputs an audio signal corresponding to the audio data to the signal processing unit 332. Further, when the detection signal is supplied from the detection unit 15, the motor drive control unit 55 outputs a drive signal to the motor 29, and the motor 29 provides a driving force corresponding to the drive signal to the rotation unit 23 d. In other words, the notification device 1d rotates the rotating unit 23d only during the period when the detecting unit 15 detects the presence of a person, and further causes the electrostatic speaker 12 to generate sound. Note that the notification device 1d rotates the rotating unit 23d for a predetermined period after the detecting unit 15 detects the presence of a person, and not only during the period in which the detecting unit 15 detects the presence of a person. Sound may be generated in the type speaker 12.

  In this way, the annoyance that a sound is always emitted can be suppressed. In addition, when a person notices that a sound is emitted from the notification device 1d and looks at the direction in which the sound is generated, the display surface of the display unit 13 faces the user, so that the image can be easily viewed. Furthermore, a person not only visually recognizes the display surface of a certain display unit 13, but also views sounds and images that change one after another by the rotation of the rotating unit 23d. Therefore, it is possible to expect a greater advertising effect compared to the case where the configuration of the notification device 1d is not provided.

  Note that the detection unit 15 may be a microphone that picks up sounds such as human speech. The control unit 331d may function as a voice identification processing unit that detects a person's speaking voice using a known voice recognition technique based on the output of the detection unit 15. In this case, the control unit 331d outputs to the motor drive control unit 55 a detection signal indicating that a human voice has been detected. When receiving the detection signal from the control unit 331d, the motor drive control unit 55 outputs the drive signal to the motor 29. The motor 29 gives a driving force corresponding to the driving signal to the rotating unit 23d. That is, the notification device 1d rotates the rotation unit 23d only during a period in which a human voice is detected by the control unit 331d. Note that the notification device 1d may rotate the rotation unit 23d not only during the period in which the human speaking voice is detected by the control unit 331d but also for a predetermined period after the human speaking voice is detected by the control unit 331d. .

(Modification 4)
Modification 3 may be further modified as follows. FIG. 13 is a front view and a plan view showing an appearance of a notification device 1e according to Modification 4. The notification device 1e includes a support portion 20e, pedestals 30e1 and 30e2, and notification portions 10e-1 to 10e-1. The support portion 20e includes a support belt 25e, a motor 29, a drive roll 27e, and a driven roll 28e. The driven roll 28e is a cylindrical member such as a pipe formed of, for example, synthetic resin or metal. The driven roll 28e is provided on the pedestal 30e2 so as to be rotatable about its axial direction. The drive roll 27e is a columnar member such as a pipe formed of, for example, synthetic resin or metal. The drive roll 27e is provided on the pedestal 30e1 so as to be rotatable about its axial direction. In addition, the driving roll 27e rotates about its axial direction when a driving force is applied from the motor 29. The support belt 25e is an endless belt that is made of a flexible material such as cloth or synthetic resin and is stretched around the drive roll 27e and the driven roll 28e. The support belt 25e rotates in a state where it is stretched between the drive roll 27e and the driven roll 28e by the rotation of the drive roll 27e.

  The notification units 10e-1 to 10e-5 are arranged so as to cover the surface of the support belt 25e. In addition, since all the structure of alerting | reporting part 10e-1-5 is the same, when it is not necessary to distinguish each, it describes as the alerting | reporting part 10e. Moreover, when it is not necessary to distinguish each component provided in the alerting | reporting part 10e, a part of code | symbol is abbreviate | omitted similarly to the alerting | reporting part 10e. The notification unit 10e includes an electrostatic speaker 12 as a sound emitting unit, a display unit 13 as a display unit, a sound absorbing sheet 14 as a sound absorbing unit, and a detecting unit 15 as a detecting unit. The sound absorbing sheet 14 is disposed between the electrostatic speaker 12 and the support belt 25e, and absorbs sound generated from the surface of the electrostatic speaker 12 facing the support belt 25e. Images such as characters, pictures, and photographs are displayed on the surface of the display unit 13 (not shown), and these images function as advertisements for products and services. The display unit 13 covers a surface of the electrostatic speaker 12 that does not face the sound absorbing sheet 14. The detection unit 15 detects whether or not a person is present at a position facing the notification unit 10e, and outputs a detection signal indicating that the person has been detected. For example, the detection unit 15-1 detects whether or not a person is present at a position facing the notification unit 10e-1, and the detection unit 15-2 is present at a position facing the notification unit 10e-2. The detection unit 15-3 detects whether or not there is a person at a position facing the notification unit 10e-3, and the detection unit 15-4 faces the notification unit 10e-4. The detection unit 15-5 detects whether or not there is a person at a position facing the notification unit 10e-5. In addition, although the detection part 15 is provided in the display surface of the alerting | reporting part 10e in the figure shown in FIG. 13, it detects not only this but the person in the position facing the alerting | reporting part 10e. It may be provided in any place as long as it can be used.

  The pedestal part 30e1 and the pedestal part 30e2 are disk-shaped members formed of, for example, synthetic resin or metal. Inside the pedestal portion 30e1, a motor 29 for applying a driving force to the driving roll 27e and a control unit 33d for controlling each part of the notification device 1e are provided. The control unit 33d and the electrostatic speakers 12 of the notification units 10e-1 to 5e-5 are passed through holes provided in the upper surface of the pedestal unit 30e1 and the lower end of the drive roll 27e, and are pulled from the upper end of the drive roll 27e. It is electrically connected by the exposed wiring. In addition, since this wiring is connected to the slip ring inside the drive roll 27e, there is little possibility of preventing the notification unit 10e from rotating.

  Next, the control of the notification device 1e will be described with reference to the block diagram of FIG. The control unit 33d includes a control unit 331d, a signal processing unit 332, and a motor drive control unit 55, and is connected to the power source unit 333, the motor 29, the detection unit 15, and the electrostatic speaker 12 of each notification unit 10e. . When the detection signal is supplied from the detection unit 15, the control unit 331 d reads out audio data from the ROM and outputs an audio signal corresponding to the audio data to the signal processing unit 332. Further, when the detection signal is supplied from the detection unit 15, the motor drive control unit 55 outputs a drive signal to the motor 29, and the motor 29 applies a drive force corresponding to the drive signal to the drive roll 27 e. That is, the notification device 1e rotates the drive roll 27e only during the period in which the detection unit 15 detects the presence of a person, and further causes the electrostatic speaker 12 to generate sound. The notification device 1e rotates not only the period in which the detection unit 15 detects the presence of a person but also the rotation of the drive roll 27 for a predetermined period after the detection unit 15 detects the presence of a person. Sound may be generated in the type speaker 12.

  In this way, the annoyance that a sound is always emitted can be suppressed. Further, when a person notices that a sound is emitted from the notification device 1e and looks at the direction in which the sound is generated, the display surface of the display unit 13 faces the user, so that the image can be easily viewed. Furthermore, a person not only visually recognizes the display surface of a certain display unit 13, but also views sounds and images that change one after another by the rotation of the drive roll 27e. Therefore, it is possible to expect a greater advertising effect compared to the case where the configuration of the notification device 1e is not provided.

(Modification 5)
FIG. 14 is a front view and a plan view showing an appearance of a notification device 1f according to Modification 5. The notification device 1f includes a pedestal portion 30f, a support portion 20f, and notification portions 10f-1 to 10f-1. The configuration of the notification units 10f-1 to 10f-1 to 3 is the same as the configuration of the notification unit 10e. Moreover, since the structure of alerting | reporting part 10f-1-3 is the same, when it is not necessary to distinguish each, it describes as the alerting | reporting part 10f. Moreover, when it is not necessary to distinguish each component provided in the alerting | reporting part 10f, a part of code | symbol is abbreviate | omitted similarly to the alerting | reporting part 10f.

  The pedestal portion 30f is a rectangular parallelepiped member made of, for example, synthetic resin or metal. And the several detection part 15 is provided in the front part of the base part 30f at predetermined intervals. The detection unit 15 detects whether or not a person is present at a position facing the notification unit 10d, and outputs a detection signal indicating that the person has been detected. In addition, although the detection part 15 is provided in the front part of the base part 30f in the figure shown in FIG. 14, it is not restricted to this. The detection unit 15 may be provided in any place as long as it can detect whether or not a person is present at a position facing the notification unit 10f.

  The support portion 20f includes a support belt 25f, a motor 29, a drive roll 27f1, and a drive roll 27f2. The drive rolls 27f1 and 27f2 are columnar members such as pipes made of, for example, synthetic resin or metal. The drive rolls 27f1 and 27f2 are provided on the pedestal 30f with a predetermined interval. The drive rolls 27f1 and 27f2 are provided on the pedestal portion 30f so as to be rotatable about the axial direction thereof. Further, the driving rolls 27f1 and 27f2 are rotated in the same direction around the axial direction by being given a driving force from the motor 29. The support belt 25f is made of a flexible material such as cloth or synthetic resin, for example, and the notification units 10f-1, 10f-2, and 10f-3 are arranged so as to cover the surface thereof. The support belt 25f is a rectangular sheet-like member that is long in the left-right direction when viewed from the front. The side of the support belt 25f in the longitudinal direction (hereinafter referred to as the long side) is longer than the interval between the drive roll 27f1 and the drive roll 27f2, and the side of the support belt 25f in the short direction (hereinafter referred to as the short side). The driving rolls 27f1 and 27f2 are shorter than the axial length. One of the short sides of the support belt 25f is fixed to the drive roll 27f1, and the other short side of the support belt 25f is fixed to the drive roll 27f2. Therefore, a part of the support belt 25f and a part of the notification units 10f-1 to 10f-1 to 3 are wound around the drive roll 27f1 or the drive roll 27f2. In FIG. 14, a part of the support belt 25f and a part of the notification unit 10f-3 are wound around the drive roll 27f2. When the drive roll 27f1 and the drive roll 27f2 rotate, the portion wound around the drive roll 27f2 and the portion wound around the drive roll 27f1 change.

  Inside the pedestal 30f, there are provided a motor 29 for applying a driving force to the drive roll 27f1 and the drive roll 27f2, and a control unit 33f for controlling each part of the notification device 1f. The hardware configuration of the control unit 33f is substantially the same as the hardware configuration of the control unit 33d, and will be described with reference to FIG. The control unit 33f includes a control unit 331f, a signal processing unit 332, and a motor drive control unit 55f, and is connected to the power supply unit 333, the motor 29, the detection unit 15, and the electrostatic speaker 12.

  When the detection signal is supplied from the detection unit 15, the motor drive control unit 55 outputs a drive signal to the motor 29, and the motor 29 applies a drive force corresponding to the drive signal to the drive roll 27 f 1 and the drive roll 27 f 2. The control unit 331f is configured to rotate the drive roll 27f1 based on the state in which the support belt 25f is wound around the drive roll 27f1 and the support belt 25f is not wound around the drive roll 27f2 (hereinafter referred to as a rotation angle). Is calculated based on the drive signal output by the motor drive controller 55f. In the ROM of the control unit 331f, information (position information) for specifying the electrostatic speakers 12 of the notification units 10f-1 to 3-3 disposed on the wound support belt 25f is described in association with the rotation angle. Has been. For example, the ROM of the control unit 331f indicates that the electrostatic speaker 12 of the notification unit 10f-3 is wound as position information in association with the rotation angle a, and the rotation angle b (b> a). The electrostatic speaker 12 of the notification unit 10f-1 is associated with the rotation angle c (b> c) to the effect that the electrostatic speaker 12 of the notification unit 10f-1, 3 is wound. Is described as being wound. The control unit 331f specifies position information corresponding to the calculated rotation angle from the information stored in the ROM, and controls to output an audio signal only to the electrostatic speaker 12 that is not wound. . The reason for this is that it does not make sense to output sounds related to the display contents that cannot be seen by humans, and if sounds are output from the wound electrostatic speaker 12, it is difficult for humans to hear. Because it becomes.

(Modification 6)
FIG. 15 is a perspective view and an exploded view showing an external appearance of a notification device 1g according to Modification 6. The notification device 1g includes a pedestal portion 30g fixed to a wall, a support portion 20g fixed to the pedestal portion 30g, detection portions 50g1 to 3, and notification portions 10g-1 to 6-6 supported by the support portion 20g. It has. The notification unit 10g includes an electrostatic speaker 12g as a sound emitting unit and a display unit 13g as a display unit.

  The support portion 20g is formed of, for example, a synthetic resin or metal, and is a rectangular sheet-like member that is long in the left-right direction when viewed from the front. The support portion 20g is fixed to the pedestal portion 30g in a state where a valley fold fold and a mountain fold fold are repeatedly provided at a predetermined interval. The valley fold here refers to folding so that the line of the crease is inward when viewed from the front direction of FIG. 15 (b), and the mountain fold is the fold line when viewed from the front direction of FIG. 15 (b). Fold it so that the line is on the outside. As shown in FIG. 15B, the support portion 20g includes, in order from the left side, a valley fold fold T1, a mountain fold fold Y1, a valley fold fold T2, a mountain fold fold Y2, and a valley fold fold T3. Is provided. The notification unit 10g is arranged between the adjacent valley fold and mountain fold folds of the support unit 20g. Specifically, the notification unit 10g-1 is disposed between the left side of the support unit 20g and the valley fold fold T1, and the notification unit 10g-2 is formed between the valley fold T1 of the support unit 20g and the mountain fold. The notification portion 10g-3 is disposed between the fold fold Y1 and the valley fold T2 of the support portion 20g, and the notification portion 10g-4 is disposed between the fold Y1 and the support portion 20g. Arranged between the fold T2 and the mountain fold Y2, the notification section 10g-5 is disposed between the mountain fold Y2 and the valley fold T3 of the support section 20g, and the notification section 10g-6 is supported. It arrange | positions between the crease | fold T3 of the valley fold of the part 20g, and the right side. The detection units 50g1, 50g2, and 50g3 are, for example, sensors that detect light, and are provided at the valley fold fold T1, the valley fold fold T2, and the valley fold fold T3 of the support portion 20g.

  The control unit 33g includes a control unit 331g and a signal processing unit 332, and is connected to the power supply unit 333, the electrostatic speaker 12g, and the detection unit 50g. The ROM of the control unit 331g stores sound data, a program, a threshold value, and a sound management table. The CPU of the control unit 331g controls each unit of the notification device 1g by reading a program stored in the ROM, loading it into the RAM, and executing it. For example, when a detection signal indicating that light has been detected is supplied from the detection unit 50g1, the control unit 331g outputs an audio signal corresponding to the audio data to the signal processing unit 332, thereby adjacent to the detection unit 50g1. A sound corresponding to the audio signal is generated in the matching electrostatic speaker 12g-1 and the electrostatic speaker 12g-2. In addition, when the detection signal is supplied from the detection unit 50g2, the control unit 331g outputs a sound corresponding to the audio signal to the electrostatic speaker 12g-3 and the electrostatic speaker 12g-4 adjacent to the detection unit 50g2. generate. In addition, when the detection signal is supplied from the detection unit 50g3, the control unit 331g outputs a sound corresponding to the audio signal to the electrostatic speaker 12g-5 and the electrostatic speaker 12g-6 adjacent to the detection unit 50g3. generate. On the other hand, the control unit 331g does not output the audio signal to the signal processing unit 332 when the detection signal is not output from the detection unit 50g.

  As described above, since the sound is emitted from the electrostatic speaker 12g adjacent to the detection unit 50g only when the detection unit 50g detects light, it is possible to suppress annoyance that a person can always hear the sound. . In this case, since the adjacent electrostatic speakers 12g do not face each other, the sounds emitted from the respective electrostatic speakers 12g are not mixed. Therefore, a sound that is difficult for humans to hear is not emitted.

(Modification 7)
Various examples have been given as the mechanism for supporting the notification unit 10, but this mechanism supports the display unit 13 and the electrostatic speaker 12, and further, the display surface of the display unit 13 and the release of the electrostatic speaker 12. Any mechanism that can change at least one of the posture and the position of the display unit 13 and the electrostatic speaker 12 while maintaining the state where the sound surface is superposed may be used. The mechanism that can change only the posture can be realized, for example, by providing the first support portion 21 shown in FIG. 1 in the vicinity of the center portion instead of the end portion of the notification portion 10. That is, the notification unit 10 is a case where it rotates around its own central portion, and in this case, only the posture of the notification unit 10 changes depending on the wind direction. Moreover, the mechanism which made only the position changeable is a case where the notification unit 10 is reciprocated along a linear rail or the like, for example. In this case, the posture of the notification unit 10, that is, the orientation of the notification unit 10 is not changed, and only the position thereof is changed.

(Modification 8)
In the embodiment described above, a so-called push-pull type electrostatic speaker including two electrodes and one vibrating body is used. However, a so-called single type including one electrode and one vibrating body is used. Alternatively, an electrostatic speaker may be used. In short, an electric field that changes in response to an audio signal is formed, and the charged vibrating body is displaced by receiving an electrostatic force from this electric field, and vibration is generated by sequentially changing the direction of displacement, and the vibration state (frequency, Any structure may be used as long as sound according to amplitude and phase is generated from the vibrating body.

(Modification 9)
In the above-described embodiment, the control unit 331 reads the audio data when the angle at which the rotation unit 23 rotates per unit time (hereinafter referred to as the rotation speed) is greater than or equal to the threshold value, and the audio corresponding to the audio data. The signal was output to the signal processing unit 332. However, the control unit 331 is not limited to the rotation speed, and may output an audio signal to the signal processing unit 332 when the rotation angle of the rotation unit 23 is equal to or greater than a threshold value. In this case, even when the attitude of the notification unit 10, that is, the direction of the notification unit 10 changes gently, an audio signal corresponding to the audio data is output. In any case, the control unit 331 may stop outputting the audio signal corresponding to the audio data as soon as the predetermined time or the time for reproducing the audio data ends.

(Modification 10)
In the embodiment described above, the display unit 13 covers one surface of the sheet-like electrostatic speaker 12 and the other surface, and the back surface of each display unit 13 is in contact with each surface. It was piled up like that. However, at least a part of the display unit 13 and the electrostatic speaker 12 only needs to overlap. Even in such a case, the audio signal has directivity in the direction from the sound emitting surface of the electrostatic speaker 12 toward the display surface of the display unit 13 and perpendicular to the display surface of the display unit 13. A sound corresponding to the sound can be emitted from the sound emitting surface.

DESCRIPTION OF SYMBOLS 1 ... Notification apparatus, 10 ... Notification part, 11 ... Suspension string, 12 ... Electrostatic speaker, 121 ... Vibrating body, 122 ... Elastic member, 123 ... Electrode, 13 ... Display part, 14 ... Sound absorption sheet, 20 ... Support part , 21 ... 1st support part, 22 ... 2nd support part, 23 ... Rotation part, 24 ... Rotation detection part, 26d ... 3rd support part, 29 ... Motor, 30 ... Base part, 33 ... Control unit, 331 ... Control , 3311 ... voice management table, 332 ... signal processing unit, 333 ... power supply unit, 40 ... wind power generation unit, 41 ... windmill, 42 ... rotating shaft, 43 ... generator, 55 ... motor drive control unit.

Claims (4)

A display part that is formed of a material that allows sound to pass through, and that has a display surface for displaying information and a back surface thereof;
A sound emitting surface provided at a position overlapping the display surface when viewed from a direction perpendicular to the display surface at a position on the back surface side of the display unit, and the display from the sound emitting surface An electrostatic speaker that emits sound from the sound emitting surface in a direction toward the surface and having directivity in a direction perpendicular to the display surface;
A mechanism that supports the display unit and the electrostatic speaker, and is capable of changing the posture or position of the display unit and the electrostatic speaker while maintaining the display surface and the sound emitting surface overlapped. And a notification device characterized by comprising: A detection unit for detecting that the amount of change per unit time by the mechanism of the posture or the position of the display unit and the electrostatic speaker is equal to or greater than a threshold;
Supply means for supplying the audio signal to the electrostatic speaker when the detection unit detects that a change amount of the posture or the position of the display unit and the electrostatic speaker is equal to or greater than a threshold value; The notification device according to claim 1, comprising: A plurality of sets of the display unit and the electrostatic speaker in a stacked state;
The supply means includes
Storing audio data corresponding to each of the electrostatic speakers;
The notification apparatus according to claim 2, wherein audio data corresponding to the electrostatic speaker is read and an audio signal corresponding to the audio data is supplied to each of the electrostatic speakers. The mechanism is
The display unit and the electrostatic speaker are supported so that the display unit and the electrostatic speaker can be rotated around the support column. The notification device according to claim 1.

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