JPS5926391Y2 - electronic musical instruments - Google Patents

Description

[Detailed Description of the Invention] This invention particularly relates to electronic musical instruments such as electronic organs and electronic pianos.

In recent years, so-called electronic organs, electronic pianos, etc. have been developed in which a keyboard is operated to oscillate sound (vibration) using purely electrical components and circuits such as an oscillator, which is then electrically amplified and output from a speaker. electronic musical instruments have been widely put into practical use.

Incidentally, in such electronic musical instruments, the speaker is arranged in the lower part of the electronic musical instrument housing with its sound emitting part facing forward, that is, toward the player. When a teacher's instrument and multiple student instruments are placed facing each other to provide group performance education, the teacher's instrument's speaker and the student's instrument's speaker are placed back to back. Because of the arrangement of the instruments, it was often difficult for the teacher or student to fully hear the other person's performance, even if the teacher or student could hear his or her own performance.

This idea was made in view of the above circumstances, and allows the performance sound to be emitted selectively in one direction or in multiple directions, for example, in a state where the player in the electronic musical instrument housing can primarily hear it. , the purpose of this is to provide an electronic musical instrument that can be freely switched to a state where not only the performer but also the person behind the electronic musical instrument housing can fully hear the sound. At the bottom of the shelf board to be placed, there is provided a cavity that opens substantially in a plurality of directions different from each other, and a speaker is installed in this cavity, the center line of which extends in a substantially vertical direction, and the sound emitting part of the speaker is placed in the cavity. It is arranged so as to be freely switchable between a first position facing the room and a second position where its center line extends substantially horizontally and its sound emitting part faces toward the opening of one of the empty rooms. .

An embodiment of this invention will be described below with reference to the drawings.

In the figure, reference numeral 1 denotes an electronic musical instrument housing, and this electronic musical instrument housing 1 includes a pair of side plates 2, a roof plate 3 disposed between the upper end rear parts of these side plates 2, and a roof plate 3 disposed between the upper end front parts of the side plates 2. a keyboard lid 4 that can be opened and closed; a first shelf board 5 that is disposed between the upper part of the side plate 2 below the roof plate 3 and the keyboard lid 4 and on which a keyboard (not shown) or the like is placed; A back plate 6 disposed between the rear ends of the side plates 2, a front plate 7 disposed between the front parts of the side plates 2, and an upper end of the front plate 7 below the first shelf plate 5. and the back plate 6
and a third shelf board 9 arranged between the lower part of the front board 7 and the back board 6, etc., and the side board 2. A first empty space 10 is formed between the first and second shelf boards 5, 8 and the back board 6, and the side board 2, the back board 6, the front board 7, and the second and third A second empty space 11 is formed between the shelf boards 8°9.

The first shelf 5 is formed by connecting the front end of a rear shelf 5b via a hinge 12 to the rear end of a front shelf 5a on which a keyboard, etc. (not shown) is substantially placed. After that, the shelf board 5b extends horizontally backward with respect to the front shelf board 5a as shown by the solid line in the figure, and vertically downward with respect to the front shelf board 5a as shown by the two-dot chain line in the figure. It is configured to be selectively moved to one of the states extending toward the other, and to be fixed in each of the states by appropriate means.

A speaker 13 is disposed on the upper surface of the rear shelf board 5b, with its center line oriented in a direction perpendicular to the rear shelf board 5b, and with its sound emitting part facing the first empty room 10. installed.

Further, a window is formed in the back plate 6 at a location corresponding to the first empty room 10, and a sound transmitting member 14 made of Saran net or the like is attached to this window by appropriate means.

That is, as can be understood from the figure, the empty chamber 10 opens directly at the front of the electronic musical instrument housing 1, and is substantially open at the rear for sound transmission.

Furthermore, the front plate 7 is divided into two parts, upper and lower, and the upper front plate 7a can be opened and closed with respect to the lower front plate 7b via a hinge 15.

(Incidentally, the upper front plate 7a may be divided into two left and right to form a so-called hinged door structure.

) In the figure, reference numeral 16 is an expression pedal that can be depressed to add intensity to the performance sound.

Therefore, the rear shelf board 5b of the first shelf board 5 is fixed in a horizontal state as shown by the solid line in the figure, and the center line of the speaker 13 extends in the vertical direction so that its sound emitting part is located in the first empty room 10. If the speaker 13 is made to face the electronic musical instrument housing 1 , the sound from the speaker 13 can be emitted to the front of the electronic musical instrument housing 1 through the first empty chamber 10 , and the sound can be emitted from the electronic musical instrument housing 1 through the sound transmission member 14 . It can also be released behind the

In this state, since nothing exists in the first empty room 10, the first empty room 10 can be used as a storage box for storing musical scores, etc., for example.

Further, the rear shelf board 5b of the first shelf board 5 is fixed in the vertical state shown by the two-dot chain line in the figure, and the speaker 13 is placed in the first vacant room 10.
If the center line extends horizontally and the sound emitting part faces the front of the electronic musical instrument housing 1, the sound from the speaker 13 will be directed mainly toward the front of the electronic musical instrument housing 1. It can also be released.

In addition, a second empty space 1 is provided at the rear of the front plate 7, which has a structure that can be opened and closed.
1 is formed, this second empty space 11 can be used as a storage box for storing relatively large items such as bags.

In the above embodiment, the speaker 13 is attached to the upper surface of the rear shelf board 5b of the first shelf board 5, but the speaker 13 is not limited to this, and may be attached to the lower surface of the second shelf board 8, for example. The second shelf board 8 may be configured to be rotatable using a hinge or the like.

As explained in detail above, the electronic musical instrument of this invention has a hollow chamber that opens substantially in a plurality of different directions at the bottom of the shelf board on which the keyboard etc. are placed, and a speaker is installed in this empty chamber. a first position, the center line of which extends in the vertical direction, and the sound emitting part faces the empty room; It has a configuration in which it can be freely switched between a second position facing one opening direction, and the performance sound can be focused on a person in a particular direction by moving the position of the speaker. Alternatively, since it can be heard by a wide range of people from various directions, it can be adapted to a wide range of performance conditions, purposes, etc. Therefore, it can be used, for example, as an electronic musical instrument for teachers in the group performance education system described at the beginning of this specification. Optimal.

Furthermore, the empty room can be used as a storage box as needed, which is extremely convenient from a practical standpoint.

BRIEF DESCRIPTION OF THE DRAWINGS The drawing is a partially omitted vertical sectional side view showing an embodiment of the electronic musical instrument according to the present invention. 1...Electronic musical instrument housing, 5. 8. 9...
...Shelf board, 5a...Front shelf board, 5b...
Rear shelf board, 7...Front board, 7a...Upper front board, 7b...Lower front board, 10.11...Empty room, 12. ... Hinge, 13 ... Speaker, 14 ... Sound transmission member, 15 ... Hinge.

Claims (3)

[Scope of utility model registration request] (1) At the bottom of the shelf board on which the keyboard etc. are placed, there is a space that opens substantially in multiple different directions, and a speaker is installed in this space, the center line of which extends almost vertically. switch between a first position in which the sound emitting portion faces the empty chamber and a second position in which the center line thereof extends substantially horizontally and the sound emitting portion faces toward the opening of one of the empty chambers; An electronic musical instrument characterized by being freely arranged. (2) The electronic musical instrument according to claim 1, wherein the empty chamber is substantially opened in the front and rear directions of the electronic musical instrument housing. (3) A further empty space is provided below the empty space behind the front plate of the electronic musical instrument housing, and the front plate is made openable and closable. electronic musical instrument.