JPS57142791

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DESCRIPTION JPS57142791
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an external perspective view of a keyboard
electronic musical instrument according to the present invention, FIG. 2 is a schematic plan view
of line II--FIG. 3, FIG. 3 is an external perspective view of a speaker box, FIG. Is a frequency
characteristic diagram. 1 · · · · · · · · · electronic keyboard keyboard · · · · · · · · · · · · · · · · · · · · ·
keyboard block, 7 · · · · · · · speaker box.
DETAILED DESCRIPTION OF THE INVENTION This invention relates to a keyboard electronic
musical instrument such as an electronic organ. Conventionally, keyboard electronic musical
instruments of this type include large and stationary savinet types, and one compact, portable
type such as a combo type. By the way, the keyboard electronic musical instrument in question is
a component-type keyboard electronic musical instrument compactly configured to be portable.
That is, since this type of keyboard electronic musical instrument has to be configured
compactly, the case is limited to a certain size of 1-10347 rho /, 9 / the size of the droop that can
be carried and held. , 1-cut, and in this limited-sized case 15117. A keyboard break formed by
arranging a large number of white eagles and black keys, a speaker box for emitting music, an
operation switch block, an external terminal block, and the like are arranged in advance.
However, in the case of the key @ electronic musical instrument as described above, it is
necessary to configure the one-hour recording board block to a size of 8 degrees in order to
perform the key depression operation of h note @ t @ block well. Therefore, the keyboard block
occupies most of the space in the housing, and as a result, the speaker box, the operation switch
block, the external terminal block, etc. can be small enough to be disposed in the remaining part
of the housing. In particular, if the speaker box is simply reduced in size, the volume of the
speaker box is reduced, and there is a problem that good frequency characteristics in the low
frequency range can not be obtained. In addition, since the speaker box, the functional switch
block, the external terminal block, and the like are formed in a box shape like a car 2-035, when
these are arranged in the housing; There was also a misconception that it was difficult to 考案
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73 考案以上 1)))))))))). The purpose is to increase the volume of the speaker box without
increasing the size of the case itself and without reducing the size of the keyboard block, and to
obtain good frequency characteristics. It is another object of the present invention to provide a
keyboard electronic musical instrument capable of rationally arranging the blocks and the
speaker box in the housing. Hereinafter, one embodiment of the present invention will be
described in detail based on the drawings. In the figure, reference numeral 1 denotes a keyboard
electronic musical instrument, which is horizontally supported by a support leg 2.2. The
keyboard electronic musical instrument 1 is configured such that a keyboard block 4, an external
terminal block 5, an operation switch block 6 and a speaker box 7 are disposed in a housing 3.
That is, the keyboard block 4 is formed by arranging a large number of white keys 4a and black
keys 4b and so on, and occupies most of the space 3-036 in the housing 3. The external terminal
block 51) is connected to an external eave 1111, such as a headphone or a 7-to pedal, and is
connected to the external panel 1111 '. It is arranged in the direction of the Tak 4 . In this
case, the length of the external meter block 5 is set shorter than the length in the arrangement
direction of the lines 4a, 4b of the keyboard block 4. Further, the operation switch block 6 is
provided with various switches such as a switch, volume switch and the like, and is disposed on
the left side of the keyboard block 4. In this case, the length of the operation switch block 6 is set
shorter than the length of the white 9 a 4 a of the keyboard block 4. Furthermore, the speaker
box 7 emits musical tones based on the key depression operation of the keyboard block 4 and
corresponds to the upper left corner portion of the board block 4 and the external terminal block
5. They are disposed on the left side and above the operation switch block 6 so as to correspond
to each other. That is, as shown in FIG. 3, the upper d self speaker box 7 is folded at the corner so
that one end of the closed frame 8 corresponds to the upper left corner of the keyboard block 4373: The song is formed. In this case, new song formation> 2, 7. Among the respective end
portions 8... 8 b, the end portion 8 .. is formed to have the same size as the left side portion of the
outer terminal block 5, and the above-mentioned end 8 b is the above operation switch Are
formed in the same size as the upper portion of the rack 6. In addition, a speaker 9 is disposed
on the upper surface of the box 8 configured as described above. In addition, it is toi in the
figure, iia, and music stand. Therefore, in the keyboard electronic musical instrument 1
configured as described above, since the speaker box 70 box 8 is newly formed at a right angle
so as to correspond to the upper left corner of the keyboard block 4, the speaker box 7 is Can be
placed on the upper left side of the keyboard block 4 with almost no gap, so that one end 8m of
the box 8 corresponds to the left side of the external terminal block 5; Further, since the end 8 b
of the box 8 corresponds to the upper side of the operation switch lock 6, the box 8 can be
disposed without any gap between them, and as a result, each block in the housing 3 5-038 lock
4.5.6 and the above-mentioned speaker box 7-% Ti ′ ′ ′ ゝ 1tt6.m & 1 ′ ′ 6 ° ′, '; What is
because it is bent At least one of the bent end portions ga and 8b is larger than the conventional
speaker box without enlarging the housing 3 itself or the keyboard block 4. The volume of the
speaker box 7 can be increased, and as a result, it is possible to improve the frequency
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characteristics particularly in the bass range.
That is, when the volume of one speaker box is large, as shown in FIG. 4, the frequency
characteristic of the low frequency MK generally drops gently and extends like a person of a
frequency characteristic curve, and the frequency characteristic is improved. When the volume of
the box is small, the frequency characteristic drops as shown by the frequency characteristic
curve B so that the frequency characteristic is deteriorated. From such a thing, in the said
speaker box 7, since the volume becomes large, the frequency characteristic in a bass region
becomes bad, As a result, the sound of 6-low frequency can be emitted favorably. In the above
embodiment, the box 8) of the speaker box 7 is bent at a position corresponding to the upper left
corner of the keyboard block 4. However, this invention is limited to this. Without, #! It may be a
speaker box in which the box body is bent so as to correspond to the upper right corner of the
board bracket 4. As described above in detail, according to the keyboard electronic musical
instrument according to the present invention, in the keyboard electronic musical instrument in
which at least the speaker box and the keyboard block are disposed in the housing, the speaker
box is bent at a right angle Since the speaker box is arranged corresponding to the corner of the
keyboard block, the speaker box can be enlarged without making the case itself large and
without making the keyboard block small. As well as being able to increase its volume, this can
improve the frequency characteristics especially in the bass range, can emit good sound, and the
speaker box is bent at a right angle. And since it is arranged corresponding to the corner part of
the keyboard poor lock, each above: block and the above speaker box are not There is an effect
that two to / can be rationally arranged without causing Shun gap.
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