JP2582306Y2 - Electronic musical instrument - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a main structure of an electronic musical instrument, particularly a keyboard.

[0002]

2. Description of the Related Art A keyboard operated by a keyboard has an operation panel for controlling various musical sounds, rhythms, and timbres on a main body casing, and a keyboard portion is provided on a front surface of the main body casing. Such a keyboard has a built-in speaker in a main body casing and emits an electronic sound in accordance with a performance operation. Therefore, it is necessary to form a space for the speaker in the keyboard main body casing. It is desirable that the capacity of the speaker space be as large as possible in view of the improvement in sound quality of electronic musical instruments in recent years. On the other hand, a portable keyboard in consideration of portability of the keyboard requires a particularly small and compact main body.

[0003]

However, if the capacity of the speaker space is increased in order to improve the sound quality, the size of the main body is inevitably increased, which is contrary to the demand for a compact and compact portable keyboard.

This invention has been made in view of the above-mentioned problems of the prior art, and aims to improve the sound quality by increasing the speaker capacity when using the performance, and to improve the portability by using a small and compact shape when not in use. The purpose is to provide an improved keyboard.

[0005]

In order to achieve the above object, the present invention provides a portable electronic musical instrument having a main body casing forming a speaker space therein and a keyboard provided on a front surface of the main body casing. An operation panel mounted so as to be rotatable with respect to the main body casing and rotatable with respect to the main body casing so as to be housed in the speaker space;
When the keyboard portion is stored in the main body casing
This operation panel is also stored in the main casing,
When the keyboard is pulled out of the main body casing,
The operation panel covers the drawer opening of the main body casing.
It is configured as follows.

That is, in this invention, the keyboard portion is the main body case.
Rotatably mounted on the keyboard
And a control panel that is interlocked with the rotation of the keyboard section, and when the keyboard section is stored in the main body casing, the operation panel is also stored in the main body casing. When the keyboard is pulled out of the main body casing, the operation panel is configured to cover the draw-out opening of the main body casing.

[0007]

When the performance is used, the keyboard is pulled out to the front of the main body casing, and the space in the main body casing is used as a speaker space. When not in use, the keyboard portion protruding from the front of the main body casing is housed in the space used as the speaker space in the main body casing, and the shape of the main body becomes smaller when not in use. At this time, operate with the keyboard
The work panel is also stored in the main body case in conjunction. Keyboard
When the control panel is pulled out, the operation panel
The action of the lid that covers the drawer opening to put the keyboard in and out
do.

[0008]

FIG. 1 is a sectional view of a rotary storage type keyboard according to an embodiment of the present invention. (A) shows a state at the time of use, and (b) shows a state at the time of storage. A speaker space 2 is formed in a main body casing 1 constituting a keyboard main body. The main body casing 1 has a length corresponding to the number of keyboards in a longitudinal direction (a direction perpendicular to the paper surface), and has, for example, speakers (not shown) at both ends. The keyboard 4 and the lower frame 5 are pivotally attached to the main body casing 1 via hinges 6 so as to be rotatable in the direction of arrow A. The operation panel 3 is rotatably attached to the keyboard 4 via a hinge 7. The operation panel 3 is provided with buttons for performing various tone control such as vibrato and percussion, and operations such as tone and rhythm, and various display lamps. The keyboard unit 4 and the operation panel 3 are electrically connected to a musical tone forming unit (not shown).

At the time of playing the keyboard, the keyboard 4 is pulled out from the main casing 1 to the front together with the lower frame 5 as shown in FIG. At this time, the operation panel 3 covers the keyboard drawout opening on the front surface of the main body casing 1. In this state, the operation panel 3, the keyboard portion 4, and the lower frame 5 are fixed by appropriate locking means (not shown). When the keyboard and the like are pulled out in this manner, the capacity of the speaker space 2 in the main body casing 1 is sufficiently large, and the sound quality is improved.

When the keyboard is not used, (b)
As shown in the figure, the keyboard portion 4 and the lower frame 5 are rotated via hinges 6 and housed in the speaker space 2 in the main body casing 1. At this time, the operation panel 3 mounted on the front surface of the main body casing 1 rotates and moves via the hinge 7 in conjunction with the rotation operation of the keyboard portion 4, and is stored in the main body casing 1 as shown in the figure. . In this state, the operation panel 3, the keyboard portion 4, and the lower frame 5 are fixed by appropriate locking means (not shown). In a state where the keyboard and the like are stored in the main body casing 1 in this manner, the length of the keyboard main body in the front-rear direction (left-right direction in the drawing) is shortened, and the keyboard main body is reduced in size and size.

The operation panel 3 is, for example, pivoted at its upper end to the body casing side instead of the above-mentioned pivotally attached structure to the keyboard portion 4, and is pushed into the casing in conjunction with the housing operation of the keyboard portion 4. It is good also as a configuration which can be inserted.

[0012]

As described above, in the rotary storage type keyboard according to the present invention, the keyboard is rotatably mounted on the main body casing, so that the keyboard is rotated from the main body casing to the front during performance. When unfolded, the speaker space capacity in the casing can be increased to improve sound quality, and when not in use, the keyboard can be rotated and stored in unnecessary speaker space when not playing, thus reducing the space in the main body. It can be used effectively to store the keyboard,
As a result, the keyboard body has a small and compact shape, and the portability is improved. In addition, the operation panel
Rotates in conjunction with the keyboard and places the keyboard inside the main casing
When stored, this operation panel is also
When the keyboard is retracted and the keyboard is pulled out of the casing
This operation panel is located on the keyboard on the front of the main unit casing.
Cover the drawer opening. This further simplifies the structure.
A simple and compact configuration is obtained.

[Brief description of the drawings]

FIGS. 1A and 1B are explanatory diagrams of the operation of the rotary storage type keyboard according to the present invention, wherein FIG. 1A shows a state in use and FIG. 1B shows a state in storage.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1; Body casing, 2; Speaker space, 3; Operation panel, 4; Keyboard part, 5; Lower frame, 6, 7;

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) G10H 1/32 G10H 1/00 H04R 1/02 102

Claims (1)

(57) [Scope of request for utility model registration] 1. A portable electronic musical instrument having a main body casing forming a speaker space therein and a keyboard provided on a front surface of the main body casing, wherein the keyboard is rotatably mounted on the main body casing. the keyboard section is rotated and can be stored in the speaker space, said keyboard section
An operation panel mounted so as to be linked to the
When the panel is stored in the main casing,
The keyboard is also housed in the main body casing, and the keyboard part is
When pulled out of the casing, the operation panel
An electronic musical instrument configured to cover a drawer opening of a body casing .