JPH0641278Y2 - Electronic musical instrument - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention is an electronic musical instrument in which a musical sound is electronically created and a musical sound corresponding to this key is emitted from a speaker by pressing a required key on a keyboard. Improving Sound Emitting Structure (Prior Art) Conventionally, as shown in FIG. 3 and FIG. 4, an electronic musical instrument body 1 having a keyboard K, electronic parts (not shown), a speaker S, etc.
In the electronic musical instrument composed of the left and right support members 2, 2 that support the main body 1 at both the left and right ends thereof, the upper plate 1a of the main body 1 or the front panel 1c is provided with a sound output hole 1b. Alternatively, the speaker S is attached from the rear surface of the front panel 1c toward the sound output hole 1b.

In FIG. 3 and FIG. 4, 1d is a side plate, 1e is a back plate, 1f is a shelf plate, 3 is a base member installed between the left and right support members 2, 2 and 4 Indicates a pedal mounted on the base member 3, and 5 indicates a back plate installed above the left and right support members 2, 2.

With such a sound emission structure, the player directly listens to the musical sound emitted from the speaker S, and there is no feeling that the entire instrument body is ringing like a piano, and improvement is desired. is there.

Further, when the speaker S is mounted on the upper surface plate 1a of the main body 1 or the back surface of the front panel 1c in this way, the space inside the main body is limited by the volume of the speaker S, which affects the storage space for electronic components, operating components, and the like. There was a drawback.

Further, in this structure, the top plate 1a or the front panel 1c
In order to use as a baffle plate, it is necessary to have high rigidity, which causes a drawback of high cost.

(Problems to be Solved by the Invention) This invention provides an electronic musical instrument which solves the above-mentioned drawbacks and obtains acoustic effects such as a change in the directivity of a musical sound emitted from the speaker S. , An electronic musical instrument body 1 in which a keyboard K, electronic parts, a speaker S, etc. are arranged on a shelf board 1f
And a left and right support member 2 for supporting the electronic musical instrument main body 1 at both left and right ends thereof. In the electronic musical instrument, a speaker S having a sound emitting portion facing downward on a shelf 1f behind the keyboard K. And a back plate 5 that reflects the sound emitted from the speaker S
And a plurality of auxiliary holes provided on the same radius from the main hole 2a and the main hole 2a
2b are provided respectively on the left and right supporting members 2, and the back plate 5 is mounted between the supporting members 2 at one end on one side of the main hole 2a of the supporting member 2 and at the other ends on the other side at desired slave holes 2b. The back plate 5 and the speaker S are variably opposed to each other.

(Embodiment) FIG. 1 is a sectional view of an embodiment of an electronic musical instrument according to the present invention, and FIG. 2 is a left and right support member 2, 2, a base member 3,
FIG. 3 is a perspective view of a main part of a stand portion of the electronic musical instrument according to the present invention, which is composed of the back plate 5.

The electronic musical instrument body 1 includes a keyboard K, electronic components (not shown),
The speaker S and the like are arranged on the shelf 1f, and the speaker S is attached to the rear of the keyboard K with the sound emitting portion facing downward. Below the speaker S, a long back plate 5 having a required width and thickness for reflecting sound emitted from the speaker S is provided between the left and right support members 2 and 2 and is opposed to the speaker S. As shown in FIG. 2, the back plate 5 has embedded nuts 6 embedded in the upper and lower sides of the left and right side surfaces.

On the other hand, the left and right support members 2 and 2 have the speaker S of the shelf board 1f.
A main hole 2a is provided at a position where the back plate 5 is oppositely provided, and a plurality of sub-holes 2b are provided below the main hole 2a on the same radius centered on the main hole 2a with a required interval. Then, a screw 7 is screwed into an embedded nut 6 embedded in the upper side surface of the back plate 5 through the main holes 2a in the left and right support members 2, 2 and the lower side surface of the back plate 5 is inserted through an optional sub hole 2b. A structure in which a back plate 5 is attached between the left and right support members 2, 2 by screwing a screw 7 into a buried nut 6 embedded in the back plate 5, and the sound emitted downward from the speaker S is reflected by the back plate 5. The back plate 5 is the support member 2 for fastening the upper side surface.
Secondary hole for loosening the screw 7 of the main hole 2a of the
If the screw 7 of 2b is removed and inserted into another subordinate hole 2b and screwed, the mounting angle of the back plate 5 will change.

As described above, the lower portion of the back plate 5 can be variably attached to a required angle by arbitrarily changing the screwing position of the support member 2 to the subordinate hole 2, and the musical sound emitted from the speaker S can be attached to the required angle by the back plate 5. Can be reflected at.

In the above embodiment, the main hole 2a of the support member 2 is set upward,
Although the sub-hole 2b is provided below, the main hole 2a may be provided below and the sub-hole 2b may be provided above.

Further, although the back plate 5 has a function as a strength reinforcing member of the stand portion, a fixed strength reinforcing member different from the back plate 5 may be provided.

(Effect of the invention) As described above, the speaker is attached to the shelf of the electronic musical instrument main body downward, and the angle of the back plate of the stand is variable, so that the tone color and directivity of the musical sound can be freely adjusted. It has the effect of.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of the electronic musical instrument of the present invention,
FIG. 2 is a perspective view of a main part of a stand part according to the present invention, and FIG.
FIG. 4 is a perspective view of a conventional electronic musical instrument, and FIG. 4 is a sectional view thereof. K ... keyboard, S ... speaker 1 ... electronic musical instrument body, 1f ... shelf plate 2 ... support member 3 ... base member 4 ... pedal, 5 ... back plate 7 ... embedded nut

Claims (1)

[Scope of utility model registration request] 1. An electronic musical instrument main body 1 having a keyboard K, electronic parts, a speaker S, etc. arranged on a shelf 1f, and left and right support members 2 for supporting the electronic musical instrument main body 1 at both left and right ends thereof. In the configured electronic musical instrument, a speaker S having a sound emitting portion facing downward on a shelf 1f behind the keyboard K, and a back plate 5 that reflects the sound emitted from the speaker S,
The support member 2 includes a main hole 2a and left and right support members 2 each having a plurality of sub-holes 2b provided on the same radius from the main hole 2a.
In between, the back plate 5 is attached to the main hole 2a of the support member 2 on one side and both ends on the other side to desired sub holes 2b, and the back plate 5 is variably opposed to the speaker S. Electronic musical instrument characterized by