JP3982029B2 - Keyboard instrument - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a keyboard musical instrument which can emit key based on the performance information.
[0002]
[Prior art]
A function for instructing a player to emit a key to be pressed next has been developed in a performance support device for a keyboard instrument. As an example of a device having such a light emitting function, a keyboard device in which a light emitter is provided on the heel side of the keyboard device has been developed. In this keyboard device, the periphery of the key is molded with resin, an air gap is provided inside, and a part of the upper surface of the key is made transparent so that the light emitted from the light emitter disposed on the heel side is transparent part of the key It is designed to pass through. The player is instructed to emit light by the transmitted light.
[0003]
[Problems to be solved by the invention]
However, in the case of a keyboard instrument having a wooden key, a part of the key cannot be made transparent. Therefore, in the configuration as described above, it is not possible to issue a key emission instruction.
Therefore, a device is used in which a light emitter is provided on the keyboard or a light emitter is provided on the keyboard holding portion of the piano body. However, since the former device is provided with a light emitter in the key that is a movable part, the configuration for supplying power to the light emitter is complicated, power supply to the light emitter is troublesome, and the light emitter obstructs performance operation. There was a problem to do. The latter device has a problem in visibility because the key and the light emitter are separated from each other.
[0004]
The present invention has been made in consideration of the above-described circumstances, and even in a wooden keyboard, the light can be emitted based on the performance information by the light emitting means supported by the support below the keyboard. an object of the present invention is to provide a keyboard musical instrument.
[0005]
[Means for Solving the Problems]
In order to solve the above-described problem, a keyboard instrument according to claim 1 of the present invention is provided with a support body, and is disposed above the support body so as to be rotatable with respect to the support body, and penetrates vertically. the through-hole is perforated to a plurality of keys that does not transmit light by internally clogged, provided in correspondence with the key, and light emitting means supported on said support, the key of each of the through-hole A plurality of light transmissive members that are disposed only in the opening on the upper surface side and can transmit light emitted from the light emitting means, and a control means that controls each of the light emitting means based on performance information that is input. It is characterized by comprising.
[0006]
According to the configuration of the keyboard instrument described above, the light emitted from the light emitting means supported by the support passes through the through hole, and then passes through the light transmitting member and is recognized by the player's vision. Thereby, the key can be emitted based on the performance information. Therefore, since it is not necessary to supply power to the key which is a movable member, it is possible to simplify the wiring configuration and reduce the hindrance to the performance operation. Further, since the player can visually recognize the light transmitted through the light transmitting member provided in each key, the correspondence between the light emitted from the light emitting means and the key is easily understood.
[0007]
According to a second aspect of the present invention, in the keyboard instrument according to the first aspect, the light emitting means is disposed in the through hole.
According to this configuration, since the light emitting means is disposed in the through hole, that is, it is possible to emit light at a position closer to the upper surface of the key, the light emitted from the light emitting means can be formed without forming a large through hole. Will be recognized by the player's vision.
[0008]
A keyboard instrument according to claim 3 is the keyboard instrument according to claim 1 or 2, characterized in that the inner surface of the through hole is a reflective surface that reflects light.
According to the configuration of the third aspect, the light emitted from the light emitting means is reflected in the through hole, and a large amount of light is emitted from the upper surface of the key.
[0009]
The keyboard instrument according to claim 4 is the keyboard instrument according to any one of claims 1 to 3, wherein the light transmitting member is an optical body that diffuses light emitted from the light emitting means upward. Features.
According to the fourth aspect of the present invention, since the light emitted from the light emitting means is diffused upward by the optical body, the light emission of the key can be recognized more clearly with respect to the visual perception of the player.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
A. Configuration of Embodiment First, FIG. 1 is a side sectional view showing the vicinity of a key of a grand piano according to an embodiment of the present invention. In the same figure, the code | symbol 1 shows a shelf board. A frame-like ridge 12 is placed above the shelf 1, and the key 2 is supported above the ridge 12. As the key 2, a wooden one whose inside is densely packed is used, and its surface is covered with a resin such as artificial ivory. The key 2 is freely rotatable via a balance pin 3 protruding from the collar 12, so that a performer can perform by pushing down the front end on the left side in the figure. A plurality of such keys 2 are juxtaposed in the left-right direction, which is the direction perpendicular to the paper surface of the drawing, to constitute a keyboard.
[0013]
Further, a front pin 11 protrudes from the collar 12 so that the roll of the key 2 during key depression is suppressed. Further, the same number of hammer action mechanisms (not shown) as the key 2 are provided above the hook 12, and when the key 2 is rotated, the corresponding hammer action mechanism is actuated to strike a string not shown. To generate sound.
[0014]
FIG. 2 is a front view of two adjacent keys 2. As shown in FIGS. 1 and 2, the key 2 is formed with a through hole 4 penetrating in the vertical direction. The through-hole 4 is fitted with a material having a high reflectivity, for example, an aluminum foil formed in a cylindrical shape, so that the inner surface 4a of the through-hole 4 reflects light emitted from the light emitter 5 described later. It is a reflective surface.
[0015]
Inside the through hole 4, a light emitter (light emitting means) 5 is arranged in a state having an appropriate gap around it, so that when the key 2 is rotated, the inner surface 4 a of the through hole 4 and Contact with the light emitter 5 is prevented. As the light emitter 5, a light bulb, a fluorescent lamp, an LED (Light Emitting Diode), or the like that is elongated in the vertical direction as illustrated can be used.
[0016]
As shown in FIG. 1, a rigid support member 6 is attached to the lower end of the light emitter 5. This support member 6 is attached to the upper surface of the shelf board 1, and the light-emitting body 5 is fixed by this. Note that the light emitter 5 may be fixed by attaching the support member 6 to the flange 12. In the present embodiment, the support member 6 is made of a conductive material, and power can be supplied to the light emitter 5 from a power supply circuit described later. A power supply line may be provided separately from the support member 6 to supply power to the light emitter 5.
[0017]
A concave lens (light transmission member) 8 is disposed in the opening 7 on the upper side of the through hole 4 with the concave surface on the lower side. The light emitted from the light emitter 5 is diffused above the key 2 by the concave lens 8. Instead of the concave lens 8, a member that can transmit light such as glass or transparent resin formed in a plate shape or a column shape may be provided. In addition, if this member is made of the same material as that of the surface of the key 2, it is preferable that the finger touch does not change.
[0018]
Next, a control system for controlling the light emission of the light emitter 5 will be described with reference to FIG. As shown in the figure, the control system includes a performance information reading unit 31, a control unit (control unit) 32, and a power supply circuit (control unit) 33.
[0019]
The performance information reading unit 31 sequentially reads performance information stored in a storage medium such as a floppy disk or a CD-ROM (compact disk-read only memory) and outputs it to the control unit 32 over time. The control unit 32 includes a CPU, a ROM (read only memory) in which a program used in the CPU is recorded, and a RAM (random access memory) serving as a working area. A control signal is output to the power supply circuit 33 based on the played performance information. The power supply circuit 33 supplies current to the light emitter 5 according to a control signal from the control unit 32.
[0020]
B. Operation of Embodiment Next, the operation when the key 2 emits light with this grand piano will be described. First, the performance information stored in a storage medium such as a floppy disk, a CD-ROM, or a hard disk is sequentially read by the performance information reading unit 31. The control unit 32 sequentially outputs control signals to the power supply circuit 33 based on the performance information read by the performance information reading unit 31. When a control signal is input from the control unit 32, the power supply circuit 33 supplies power to the light emitter 5 corresponding to the key 2 corresponding to the performance information, and the light emitter 5 emits light.
[0021]
C. Effects According to the Embodiment In the present embodiment, the light emitted by the light emitter 5 as described above passes through the concave lens 8 and reaches the upper side of the key 2 and is visually recognized by the player. Therefore, since the key can be emitted by the light emitter 5 supported by the shelf 1 on the instrument body side, it is not necessary to wire the key 2 that is a movable member. As a result, the wiring configuration for supplying power to the light emitter 5 can be simplified, and it can be reduced that the performance operation is hindered. In addition, since the player can visually recognize the light transmitted through the concave lens 8 disposed on the upper surface of each key 2, the correspondence between the light emitted from the light emitter 5 and the key 2 is easily understood.
[0022]
Further, since the light emitter 5 is disposed in the through hole 4, that is, it can emit light at a position closer to the upper surface of the key 2, the player can visually recognize it without forming a large through hole. A large amount of light reaches above the key 2. Therefore, the present invention can also be applied to a wooden keyboard in which a large through hole cannot be formed due to interference with other components such as a front pin.
[0023]
Further, since the inner surface of the through hole 4 is formed of aluminum foil or the like, the amount of light reflected by the through hole 4 and transmitted through the concave lens 8 is increased, so that the player's visibility is improved. Further, since the light is diffused above the key 2 by the concave lens 8, the player's visibility is further improved. As a result, the amount of light reaching the upper side of the key 2 can be increased, so that even if a small-sized light-emitting body 5 is used, the player can visually recognize it, and the size of the through hole can be reduced. .
[0024]
D. Modified Example Next, a modified example of the above-described embodiment will be described with reference to FIGS. As shown in FIGS. 4 and 5, in this modification, a through hole 41 is formed in the key 2 so as to penetrate in the vertical direction. The through hole 41 has a large opening 42 on the upper side which is the left side of the drawing. An optical body (light transmitting member) 43 is disposed in the opening 42.
[0025]
As shown in FIG. 4, the optical body 43 is formed such that optical fibers are bundled and shaped so that the binding density of the optical fibers increases toward the lower side of the figure, and is tapered. The optical body 43 can efficiently transmit the light emitted from the light emitting body 5 by radiating the light incident from the bottom of each optical fiber upward and diffuse it above the key 2. As such an optical body 43, for example, “tapered fiber optics” (trade name) manufactured by Hamamatsu Photonics Co., Ltd. can be used. According to this configuration, the same effects as those of the above-described embodiment can be obtained, and the optical body 43 that transmits light is formed large in the forward direction, so that the player's visibility is further improved.
[0026]
The present invention is not limited to the above-described grand piano, but can be applied to all keyboard instruments such as upright pianos, organs, and electronic keyboard instruments.
[0027]
It is also possible to apply to a keyboard instrument that can provide automatic performance by providing solenoid units that operate keys corresponding to each key, energizing the solenoid of the scale corresponding to the performance information, and moving the plunger. is there. Then, at the same time as performing the automatic performance, the lighting decoration function can be given to this type of automatic performance device by causing the operated key to emit light.
[0028]
In addition, as shown in FIG. 6, a key pressing sensor 61 can be provided on the upper surface of the shelf board 1 or the basket 12 corresponding to each key 2. The key pressing sensor 61 detects the position of the key 2 and outputs a position signal to the control unit 32 shown in FIG. In the present invention, since it is not necessary to form a large through hole in the key 2, the key pressing sensor 61 can be attached to the position shown in the drawing.
[0029]
In a keyboard instrument that can be automatically played as described above, an electronic keyboard instrument that applies a reaction force to a key using a solenoid, and the like, by providing the key pressing sensor 61, the amount of power supplied to the solenoid can be controlled more precisely. It becomes possible. Therefore, it is possible to perform more precise automatic performance and impart reaction force to keys.
[0030]
Further, the control unit 32 shown in FIG. 3 determines whether or not the key based on the performance information is pressed based on the position signal output from the key pressing sensor 61, and the key is pressed next only when the correct key is pressed. It is also possible to issue a power key emission instruction.
[0031]
The present invention is also applied to a keyboard instrument training apparatus that has a keyboard similar to a keyboard instrument, but that reduces the sound when the key is pressed or does not generate a sound when the key is pressed. be able to.
[0032]
【The invention's effect】
As described above, according to the present invention, even in a keyboard musical instrument having a wooden key, the light emitting means supported on a support at the bottom of the keyboard, perform light emission of a key based on the performance information, performer Can be seen clearly in the vicinity of where the finger touches.
[Brief description of the drawings]
FIG. 1 is a side sectional view showing the vicinity of a key of a grand piano according to an embodiment of the present invention.
FIG. 2 is a front view of the key of the grand piano.
FIG. 3 is a block diagram showing a configuration of the grand piano.
FIG. 4 is a side sectional view showing the vicinity of a key of a variation of the grand piano.
FIG. 5 is a front view of a key of the grand piano shown in FIG. 4;
6 is a diagram showing a case where a key depression sensor is arranged on the grand piano shown in FIG. 1. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Shelf board (support body), 2 ... Key, 4 ... Through-hole, 4a ... Inner surface (reflection surface), 5 ... Light-emitting body (light emission means), 6 ... Support member, 8 ... Concave lens (light transmission member), 12 ..., 31... Performance information reading unit, 32... Control unit (control unit), 33... Power supply circuit (control unit), 43.

Claims (6)

A support;
Disposed above the support, rotatably provided with respect to the support, have a through hole penetrating in a vertical direction, a plurality of keys that does not transmit light by internally clogged,
A light emitting means provided corresponding to the key and supported by the support;
A plurality of light transmissive members that are disposed only in the opening on the key upper surface side of each of the through holes and are capable of transmitting light emitted from the light emitting means;
A keyboard instrument comprising: control means for controlling each of the light emitting means on the basis of inputted performance information.   The keyboard instrument according to claim 1, wherein the light emitting means is disposed in the through hole.   The keyboard instrument according to claim 1, wherein an inner surface of the through hole is a reflective surface that reflects light.   4. The keyboard instrument according to claim 1, wherein the light transmitting member is an optical body that diffuses light emitted from the light emitting means upward. 5. The keyboard instrument according to claim 1, wherein the light transmission member is a concave lens having a concave surface directed downward at an opening on the key upper surface side of the through hole. The opening of the through hole is greatly opened toward the front side of the key as seen from the performer,
The light transmitting member is a bundle of optical fibers, and is formed in a tapered shape so that the binding density of the optical fibers increases as it goes downward in each of the through holes. The keyboard musical instrument in any one of 4 thru | or 4.

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