JP2010286633A - Keyboard instrument - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a keyboard instrument capable of excellently outputting sound of a loudspeaker toward the front side of a musical instrument body, without making a whole musical instrument large. <P>SOLUTION: A keyboard lid 18 for covering a keyboard section 7 arranged on front side in the musical instrument body 1 so as to be freely opened and closed, is drawably accommodated on an upper side of the loudspeaker 8 in the musical instrument body 1, and a sound output section 26 including a number of small holes 28 in the keyboard lid 18, by which the sound of the loudspeaker 8 is output to the front side of the musical instrument body 1. Thus, when the keyboard section 7 is operated and performed, the sound of the loudspeaker 8 is output toward the front side of the musical instrument body 1 by the number of small holes 28 of the sound output section 26 provided in the keyboard lid 18. Consequently, a space for installing the loudspeaker 8 in the musical instrument body 1 is secured, and the whole musical instrument is not made large, and the sound of the loudspeaker 8 is excellently output to outside of the musical instrument body 1 without closing the sound of the loudspeaker 8 in the musical instrument body 1. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a keyboard instrument such as an electronic piano in which a speaker emits a musical sound in response to a key pressing operation on a keyboard section.

In general, in a keyboard instrument such as an electronic piano, a keyboard cover that can be opened and closed is slidably provided to cover the keyboard part disposed in the instrument body, and the keyboard cover is stored in the rear side of the instrument body when performing, When a key is pressed on the keyboard in this state, the speaker is configured to emit a musical sound according to the key pressing operation.

  In such a keyboard instrument, if a speaker is arranged behind the keyboard part in the instrument body, the keyboard cover is housed on the rear side in the instrument body when playing, so the keyboard cover covers the speaker. The sound of the speaker is trapped in the instrument body, and the player can hear a sound different from the sound actually emitted by the speaker.

  Therefore, in the conventional keyboard instrument, as described in Patent Document 1, a speaker is disposed in the instrument body located above the keyboard lid housed in the instrument body, and the keyboard lid is arranged at the rear part in the instrument body. Even when housed on the side, the sound of the speaker does not stay in the instrument body, and the sound of the speaker is favorably emitted toward the front side of the instrument body.

Japanese Patent Laid-Open No. 10-39868

  However, in such a conventional keyboard instrument, in order to place the speaker in the instrument body located above the keyboard lid housed in the instrument body, the speaker is positioned above the keyboard lid housed in the instrument body. There is a problem that a large installation space for installing a speaker must be provided in the musical instrument main body, which increases the thickness of the musical instrument main body and enlarges the entire musical instrument.

  The problem to be solved by the present invention is that the entire musical instrument does not increase in size, and the sound of the speaker can be satisfactorily emitted toward the front side of the instrument body without the sound of the speaker being trapped in the instrument body. Is to provide a musical instrument.

In order to solve the above problems, the present invention includes the following components.
The invention according to claim 1 is a musical instrument main body, a keyboard portion arranged on the front side in the musical instrument main body, a speaker arranged behind the keyboard portion in the musical instrument main body, and the instrument in the musical instrument main body. A keyboard lid that covers the upper side of the keyboard when being pulled out and stored in an upper side of the speaker, and a plurality of speakers that are provided on the keyboard lid and emit sound from the speaker toward the front side of the instrument body And a sound emitting unit having a small hole.

According to a second aspect of the present invention, the keyboard unit is provided in a state corresponding to each of the plurality of keys having optical transparency that rotate in the vertical direction in response to a key pressing operation and each of the plurality of keys. The keyboard apparatus according to claim 1, further comprising: a plurality of light emitting units configured to irradiate light on the inner surfaces of the plurality of keys to cause the plurality of keys to shine, respectively.

  According to the present invention, even when the keyboard cover is housed in the musical instrument main body during performance, the sound of the speaker is emitted toward the front side of the musical instrument main body through the numerous small holes of the sound emitting part provided on the keyboard cover. Therefore, it is possible to secure a space for installing the speaker in the instrument main body located below the keyboard lid housed in the instrument main body. Therefore, the sound of the speaker 8 can be emitted to the outside of the instrument main body, and an acoustically preferable sound can be provided.

It is sectional drawing which showed the state in which the keyboard cover covered the keyboard part in one Embodiment of the electronic keyboard musical instrument to which this invention is applied. FIG. 2 is a cross-sectional view showing a state in which the keyboard lid is housed in the instrument body and the keyboard portion is opened in the electronic keyboard instrument of FIG. 1. It is an expanded sectional view of the principal part which showed the sound emission part in the keyboard cover of FIG. It is the expanded sectional view of the principal part which showed the modification of the small hole in the sound emission part of one Embodiment of FIG.

Hereinafter, an embodiment of an electronic keyboard instrument to which the present invention is applied will be described with reference to FIGS.
As shown in FIGS. 1 and 2, the electronic keyboard instrument includes a musical instrument main body 1. The musical instrument main body 1 is erected at a bottom plate 2, a front plate 3 provided upright at a front end portion (left end portion in FIG. 1) of the bottom plate 2, and a rear end portion (right end portion in FIG. 1) of the bottom plate 2. And a pair of side plates 5 (only one is shown in FIGS. 1 and 2) provided upright on both sides of the bottom plate 2, and the pair of side plates 5 and the back plate 4 And a top plate 6 provided at each upper end portion.

In this case, although not shown, the bottom plate 2 is configured to be disposed on a mounting table having legs. As shown in FIGS. 1 and 2, the front plate 3 is formed with a height that is approximately half of the back plate 4. Further, the pair of side plates 5 is cut out in a substantially L shape at the upper part on the front side. The top plate 6 is formed to be about half the size of the bottom plate 2, and is attached in a state of being arranged across the upper end portion on the rear side of the pair of side plates 5 and the upper end portion of the back plate 6. As a result, the musical instrument main body 1 is configured such that the front half is opened upward as shown in FIGS. 1 and 2.

As shown in FIGS. 1 and 2, the keyboard portion 7 is disposed on the bottom plate 2 in the musical instrument main body 1 so as to correspond to a position located about the front half that is opened upward. On the bottom plate 2 at a position located behind the keyboard portion 7, a speaker 8 for generating a musical sound is disposed downward. In this case, the keyboard unit 7 includes a keyboard chassis 10 disposed on the bottom plate 2 of the instrument body 1.

On the keyboard chassis 10, as shown in FIGS. 1 and 2, a plurality of keys 11 arranged so as to be pivotable in the vertical direction, and each key 11 according to a key pressing operation of the plurality of keys 11. A plurality of hammer members 12 that respectively apply action loads, a switch unit 13 that outputs a switch signal in response to each key pressing operation of the plurality of keys 11, and a plurality of lights that respectively irradiate light inside the plurality of keys 11. A light emitting unit 14 is provided.

In this case, as shown in FIG. 1 and FIG. 2, the plurality of keys 11 are composed of a white key and a black key, are formed of a light-transmitting synthetic resin, and are arranged in a plurality in order of musical scale. Yes. The plurality of hammer members 12 are rotatably attached to the keyboard chassis 10 in a state corresponding to the lower sides of the plurality of keys 11, respectively, and are respectively pushed down according to the key pressing operation of each key 11. The hammer member 12 is configured to apply an action load to each key 11 by rotating against the weight of the hammer member 12.

As shown in FIGS. 1 and 2, the switch unit 13 includes a rubber sheet 16 disposed on the switch substrate 15, and a dome-like bulge is formed on the rubber sheet 16 on the switch pressing unit 17 of the key 11. When the bulging portion is pressed by the switch pressing portion 17, the bulging portion is elastically deformed, and the movable contact inside the bulging portion comes into contact with the fixed contact on the switch substrate 15, Each switch 11 is configured to output a switch signal in response to a key pressing operation.

The plurality of light emitting units 14 are made up of light emitting elements such as light emitting diodes (LEDs), and as shown in FIGS. 1 and 2, each keyboard key 10 has a plurality of keys 11 on the front of each white key and each black key. It is provided corresponding to each part. In this case, the light emitting unit 14 corresponding to the white key is provided on the upper front side of the keyboard chassis 10 and is configured to irradiate light on the front side of the white key. In addition, the light emitting unit 14 corresponding to the black key is provided at an upper portion in the intermediate portion of the keyboard chassis 10 and is configured to irradiate light on the front side inside of the black key.

Accordingly, the plurality of light emitting units 14 are configured to irradiate the emitted light inside the front side of each key 11, and the emitted light passes through each key 11 and shines on the front side of the key 11. ing. The plurality of light emitting units 14 are controlled so that, when a plurality of keys 11 are pressed, the light emitting unit 14 corresponding to the key 11 that has been pressed is lighted. The light emitting unit 14 corresponding to the key 11 corresponding to the performance music is controlled to emit light sequentially.

By the way, as shown in FIGS. 1 and 2, the musical instrument main body 1 is provided with a keyboard lid 18 that covers the upper side of the keyboard portion 7 so as to be opened and closed. As shown in FIG. 1, the keyboard lid 18 is arranged above the keyboard portion 7 to cover the keyboard portion 7 when the keyboard portion 7 is not operated, and when operating the keyboard portion 7, as shown in FIG. 2. Thus, the keyboard portion 7 is exposed by being housed on the rear side (right side in FIG. 2) in the musical instrument main body 1.

In this case, as shown in FIGS. 1 and 2, a front guide portion 19 for slidably guiding the front portion of the keyboard lid 18 is provided on the front upper portion (upper left portion in FIG. 1) on the inner surface of the side plate 5 of the instrument body 1. Are inclined in a forward-downward direction (lower left in FIG. 1). The front guide portion 19 is a groove portion provided on the inner surface of the side plate 5. In addition, a rear guide portion 20 that slidably guides the rear portion of the keyboard lid 18 is slightly lowered at the rear upper side (upper right side in FIG. 1) on the inner surface of the side plate 5 of the instrument body 1 (lower right in FIG. 1). It is provided in an inclined state. The rear guide portion 20 is provided with a rack gear 21 along the rear guide portion 20.

On the other hand, as shown in FIGS. 1 and 2, the front end of the keyboard lid 18 (the left end in FIG. 1) is moved along the front guide 19 while being inserted into the front guide 19. A shaft 22 is provided, and a handle 23 for opening and closing the keyboard lid 18 is provided. Further, a rear guide shaft 24 that moves along the rear guide portion 20 is provided at the rear end portion (right end portion in FIG. 1) of the keyboard lid 18, and the rear guide shaft 24 includes A pinion gear 25 that meshes and rolls with the rack gear 21 of the rear guide portion 20 is rotatably attached.

Further, the keyboard lid 18 is provided with a sound emitting portion 26 as shown in FIGS. The sound emitting portion 26 has a structure in which a large number of small holes 28 are vertically penetrated through a flat plate 27 made of metal or synthetic resin. In this case, the small hole 28 is formed so as to emit the sound of the speaker 8 toward the front side of the instrument body 1.

That is, as shown in FIG. 3, the small hole 28 has a first hole portion 28 a opened upward and a second hole portion 28 b opened downward in contact with each other or biting into each other to communicate with each other. It is formed into a shape. In this case, the first hole portion 28a has an inner diameter of about 0.3 mm to 1 mm, and is provided on the front side (left side in FIG. 3) of the keyboard lid 18 with respect to the second hole portion 28b. ing. The second hole 28b has an inner diameter of about 0.3 mm to 1 mm, and is provided on the rear side (right side in FIG. 3) of the keyboard lid 18 with respect to the first hole 28a. ing.

Thereby, as shown in FIG. 3, the small hole 28 enters the sound of the speaker 8 from the lower side of the second hole 28b and is taken into the first hole 28a therein, and the first hole 28a. 2, the sound of the speaker 8 is transmitted to the front side of the instrument body 1 with the keyboard lid 18 stored in the rear side (right side in FIG. 2) in the instrument body 1 as shown in FIG. 2. The sound is emitted toward (left side in FIG. 3).

Further, as shown in FIG. 3, when the plurality of light emitting portions 14 of the keyboard portion 7 emit light and each key 11 shines, the small holes 28 are incident from the lower side of the second hole portions 28b. Then, by being released from the upper side of the first hole portion 28a, as shown in FIG. 1, even when the keyboard lid 18 is closed and the upper side of the keyboard portion 7 is covered, through the sound emitting portion 26 of the keyboard lid 18, The light emission state of the plurality of keys 11 is configured to be visible.

Next, the operation of the keyboard lid 18 will be described.
First, when the keyboard lid 18 is housed in the musical instrument main body 1 and the keyboard portion 7 is exposed, as shown in FIG. 1, while lifting the handle portion 23 provided at the front end of the keyboard lid 18 by hand, The keyboard lid 18 is moved toward the rear side (right side in FIG. 1) of the instrument body 1.

Then, the front guide shaft 22 provided at the front end portion of the keyboard lid 18 moves toward the rear side of the instrument body 1 along the front guide portion 19 of the instrument body 1 and is provided at the rear end portion of the keyboard lid 18. The rear guide shaft 24 thus moved moves along the rear guide portion 20 of the musical instrument body 1, so that the pinion gear 25 provided on the rear guide shaft 24 meshes with the rack gear 21 of the rear guide portion 20. In the state, it rolls toward the rear side of the instrument body 1.

Thereby, as shown in FIG. 2, the keyboard lid 18 opens the front side (left side in FIG. 2) of the musical instrument main body 1 to expose the keyboard part 7, and the rear side of the musical instrument main body 1 ( It is stored in the right side in FIG. In this state, when a plurality of keys 11 of the keyboard unit 7 are pressed and played, musical sounds corresponding to the performance are emitted from the speaker 8. The emitted sound does not stay in the musical instrument main body 1 and is emitted toward the front side of the musical instrument main body 1 from the sound emitting portion 26 of the keyboard lid 18 accommodated in the musical instrument main body 1.

That is, since the sound emitting unit 26 has a structure in which a large number of small holes 28 are vertically penetrated through the flat plate 27, the sound of the speaker 8 can be emitted to the outside of the instrument body 1 through the large numbers of small holes 28. it can. In this case, since the small hole 28 is formed in a shape in which the first hole portion 28a opened upward and the second hole portion 28b opened downward are brought into contact with each other or bite each other to communicate with each other. The sound of the speaker 8 can be taken in from the lower side of the second hole portion 28b, sent into the first hole portion 28a, and the sent sound can be emitted from the upper side of the first hole portion 28a.

In particular, as shown in FIGS. 2 and 3, the first hole 28a is provided on the front side (left side in FIG. 3) of the keyboard lid 18 with respect to the second hole 28b. Since the portion 28b is provided on the rear side (right side in FIG. 3) of the keyboard lid 18 with respect to the first hole portion 28a, the sound of the speaker 8 is located on the rear side of the second hole portion 28b. By taking in from the lower side and emitting sound from the upper side of the first hole portion 28a located on the front side, as shown in FIG. Can be emitted well toward the front side of the instrument body 1.

Further, when the keyboard cover 18 is drawn out from the rear side (right side in FIG. 2) to the front side (left side in FIG. 2) in the instrument body 1 to cover the keyboard part 7, as shown in FIG. A handle portion 23 provided at the front end portion 18 is pulled out toward the front side. Then, the front guide shaft 22 provided at the front end portion of the keyboard lid 18 moves toward the front side of the instrument body 1 along the front guide portion 19 of the instrument body 1 and is provided at the rear end portion of the keyboard lid 18. When the rear guide shaft 24 moves along the rear guide portion 20 of the musical instrument body 1, the pinion gear 25 provided on the rear guide shaft 24 is engaged with the rack gear 21 of the rear guide portion 20. Then, it rolls toward the front side of the instrument body 1.

Thereby, as shown in FIG. 1, the keyboard lid 18 is pulled out from the rear side (right side in FIG. 2) to the front side (left side in FIG. 2) in the instrument body 1, And covers the upper side of the keyboard part 7. In this state, for example, when automatic performance is selected and operated, the speaker 8 is not covered by the keyboard lid 18, so the sound of the speaker 8 is not trapped in the instrument main body 1, and the sound of the speaker 8 is satisfactorily reproduced. 1 can be emitted to the outside.

At this time, the plurality of light emitting sections 14 of the keyboard section 7 can sequentially emit light according to the selected performance music, and each key 11 can be sequentially illuminated according to the performance music. In this case, even if the keyboard cover 18 covers the keyboard part 7, the light of each key 11 that is sequentially emitted according to the performance music passes through the small holes 28 of the sound emission part 26, so that the sound of the keyboard cover 18 is emitted. Through the unit 26, the light emission state of each key 11 can be seen.

As described above, according to this electronic keyboard instrument, the keyboard lid 18 that covers the keyboard portion 7 disposed on the front side in the musical instrument main body 1 so as to be openable and closable is housed in the musical instrument main body 1 so as to be able to be pulled out above the speaker 8. At the same time, the keyboard lid 18 is provided with a sound emitting portion 26 having a large number of small holes 28 for emitting the sound of the speaker 8 toward the front side of the musical instrument main body 1. The sound can be emitted to the outside, thereby providing an acoustically preferable one.

That is, in this electronic keyboard instrument, when the keyboard section 7 is operated to perform, even if the keyboard cover 19 is housed in the instrument main body 1, a large number of small sound emission sections 26 provided on the keyboard cover 18 are provided. Since the sound of the speaker 8 can be emitted toward the front side of the musical instrument main body 1 through the hole 28, the speaker 8 is installed in the musical instrument main body 1 located below the keyboard lid 18 housed in the musical instrument main body 1. A sufficient space can be ensured, and this prevents the entire instrument from becoming large.

Further, since the sound emitting unit 26 has a structure in which a large number of small holes 28 are vertically penetrated through the flat plate 27, the sound of the speaker 8 can be emitted to the outside of the instrument body 1 through the large number of small holes 28. it can. That is, since the small hole 28 is formed in a shape in which the first hole portion 28a opened upward and the second hole portion 28b opened downward are in contact with each other or bite each other to communicate with each other. The sound of the speaker 8 can be taken in from the lower side of the second hole portion 28b, sent into the first hole portion 28a therein, and the sent sound can be emitted from the upper side of the first hole portion 28a.

In this case, as shown in FIGS. 2 and 3, the first hole 28a is provided on the front side of the keyboard lid 18 with respect to the second hole 28b, and the second hole 28b Since it is provided on the rear side of the keyboard lid 18 with respect to the first hole portion 28a, the sound of the speaker 8 is taken in from the lower side of the second hole portion 28b located on the rear side, and the first position located on the front side. The sound can be emitted from the upper side of the one hole portion 28a. As a result, as shown in FIG. Sound can be emitted well toward the front side.

Further, according to this electronic keyboard instrument, the keyboard unit 7 includes the plurality of light emitting units 14 for selectively irradiating the plurality of keys 11 with light so that each key 11 is lit. Accordingly, the keys 11 can be sequentially illuminated, and at the time of automatic performance, the keys 11 can be sequentially illuminated by the light emitting unit 14 according to the performance music.

In this case, an automatic performance is performed with the keyboard lid 18 disposed on the front side of the instrument body 1 and covering the keyboard section 7, and each key 11 is selected by the plurality of light emitting sections 14 according to the performance music. When the key is lit, the light of each key 11 selectively lit according to the performance tune passes through each small hole 28 of the sound emitting unit 26, so that the keyboard cover 18 covers the keyboard unit 7. However, the light emission state of each key 11 can be seen through the sound emission part 26 of the keyboard lid 18. For this reason, since the light emission state of each key 11 has an effect as illumination, what is preferable in terms of design can be provided.

In the above-described embodiment, a large number of small holes 28 provided in the sound emitting portion 26 of the keyboard lid 18 are formed with a first hole portion 28a opened upward and a second hole portion 28b opened downward. However, the present invention is not limited to this. For example, as in the modification shown in FIG. 4, a large number of small holes 30 are formed obliquely in front of each other. It may be configured to be inclined upward (upward to the left in FIG. 4).

That is, the small hole 30 may be formed so as to be inclined so that the upper portion 30a is positioned on the front side (left side in FIG. 4) of the musical instrument body 1 relative to the lower portion 30b. In this case, the small hole 30 may be formed in a trumpet shape in which the inner diameter of the upper part 30a is larger than the inner diameter of the lower part 30b. Even if it forms in this way, the sound of the speaker 8 can be favorably emitted toward the front side of the musical instrument main body 1 as in the embodiment described above.

In the above-described embodiment, the speaker 8 is mounted on the bottom plate 2 of the musical instrument main body 1 so as to face downward. However, the sound of the speaker 8 is transmitted by the sound emitting unit 26 provided on the keyboard lid 18. Therefore, the speaker 8 does not necessarily have to be provided downward. For example, the speaker 8 may be provided upward or may be provided laterally.

Furthermore, in the above-described embodiment, the case where the present invention is applied to an electronic keyboard instrument having a plurality of hammer members 10 each applying an action load to the keyboard 9 at the time of a key pressing operation has been described. It is not necessary to be a keyboard instrument, and can be widely applied to a simple electronic keyboard instrument that does not use the hammer member 10.

DESCRIPTION OF SYMBOLS 1 Musical instrument main body 2 Bottom plate 3 Front plate 4 Back plate 5 Side plate 6 Top plate 7 Keyboard part 8 Speaker 10 Keyboard chassis 11 Key 13 Switch part 14 Light emission part 18 Keyboard cover 26 Sound emission part 27 Flat plate 28, 30 Small hole

Claims (2)

The instrument body,
A keyboard section arranged on the front side of the instrument body,
A speaker disposed behind the keyboard in the instrument body;
A keyboard lid that covers the upper side of the keyboard part when the musical instrument main body is retractably housed and pulled out on the upper side of the speaker;
A keyboard instrument, comprising: a sound emitting portion provided on the keyboard cover and having a plurality of small holes for emitting the sound of the speaker toward the front side of the instrument body. The keyboard part is provided with a plurality of light-transmitting keys that rotate in the vertical direction in response to a key pressing operation, and a light corresponding to each of the plurality of keys. The keyboard device according to claim 1, further comprising: a plurality of light emitting units that respectively emit the plurality of keys by irradiating the plurality of keys.

Images