Electronic musical instrument and electronic keyboard musical instrument

Abstract

The invention provides an electronic musical instrument and an electronic keyboard instrument. The electronic musical instrument includes: a housing; at least one operating member provided in the housing; the sound playing component is arranged in the shell; and a cover member which is housed between the operation member and the sound reproduction member in the housing so as to be able to move in and out, and which covers the operation member in a state in which the cover member is pulled out from the inside of the housing, and which covers the sound reproduction member in a state in which the cover member is housed in the housing. The inside of the housing is divided into a first space on the operation member side and a second space on the sound reproduction member side by the cover member, and a recess provided so as to span the first space and the second space is provided on a plate surface close to the cover member in the housing.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority based on Japanese Patent Application No. 2023-103894 filed on June 26, 2023, and all contents of this basic application are cited here. Technical Field

[0003] The present invention relates to an electronic musical instrument and an electronic keyboard musical instrument. Background Art

[0004] In the past, among electronic keyboard instruments that can provide a keystroke feeling and tone close to that of a real piano, there is known an electronic keyboard instrument that contains a key cover for covering the keyboard in a housing. For example, Japanese Patent Publication No. 2012-145803 discloses an electronic keyboard instrument, which includes: an instrument body, a keyboard portion arranged on the instrument body, a surface speaker unit arranged at the rear of the instrument body inside the instrument body, and a keyboard cover arranged on the instrument body. In this electronic keyboard instrument, the front cover and the rear cover of the keyboard cover are rotatably connected, and the keyboard portion is covered from above in a closed state, and the keyboard portion is opened in an open state to enable performance. Summary of the invention

[0005] In the electronic keyboard instrument of the Japanese Patent Publication No. 2012-145803, the sound emitted from the surface speaker unit toward the front side passes through the opening provided in the instrument body and is emitted to the player's side. However, the keyboard cover is stored inside the instrument body in the open state, and the rear end of the keyboard part is located below the center position of the surface speaker unit. Therefore, in the sound emission path that passes through the lower side of the rear end of the keyboard cover and reaches the keyboard side, the sound emission path becomes narrow, and the sound emitted from the surface speaker unit toward the keyboard side is not fully emitted, and it may not be possible to obtain a good sound image. In addition, if sufficient space for sound emission is provided on the lower side of the rear end of the keyboard cover, there is a problem that the size of the instrument body will become larger.

[0006] An object of the present disclosure is to provide an electronic musical instrument and an electronic keyboard musical instrument that can achieve good sound and image while achieving space saving in a structure in which a key cover is stored in a housing.

[0007] The electronic keyboard musical instrument disclosed in the present invention comprises: a shell; at least one operating member arranged in the shell; a sound-emitting component arranged in the shell; and a cover member which is freely accommodated between the operating member and the sound-emitting component in the shell and covers the operating member when the operating member is pulled out from the shell, and when the cover member is accommodated in the shell, the shell is divided by the cover member into a first space on the operating member side and a second space on the sound-emitting component side, and a recess is provided on a plate surface in the shell close to the cover member so as to straddle the first space and the second space.

[0008] Effects of the Invention

[0009] According to the present disclosure, it is possible to provide an electronic musical instrument and an electronic keyboard musical instrument that can achieve good sound and image while achieving space saving in a structure in which a key cover is stored in a housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is an overall perspective view of an electronic keyboard instrument according to an embodiment of the present disclosure as viewed from the front side.

[0011] Figure 2 This is a perspective view of the main body of the electronic keyboard instrument according to the embodiment of the present disclosure as viewed from the rear side, and is a perspective view of a state in which the rear panel is removed.

[0012] Figure 3 It is a plan view of the main body of the electronic keyboard instrument according to the embodiment of the present disclosure, and is a plan view of a state in which the front top plate and the rear top plate are removed.

[0013] Figure 4 This disclosure Figure 3 An enlarged view of the vicinity of the concave portion.

[0014] Figure 5 is a cross-sectional view of the main body of the electronic keyboard instrument according to the embodiment of the present disclosure, Figure 3 Cross-sectional view of the V-V section.

[0015] Figure 6 is a perspective sectional view of the main body of the electronic keyboard instrument according to the embodiment of the present disclosure, Figure 4 The sectional view corresponds to the stereoscopic sectional view of the cross section. DETAILED DESCRIPTION

[0016] Embodiments of the present invention will be described with reference to the drawings. Figure 1 The electronic keyboard instrument (electronic musical instrument) 1 shown in the figure includes a main body 10 and a leg 100. Figure 1As shown, the main body 10 includes: a keyboard (operating member) 20 having a plurality of keys 22 consisting of white keys 22W and black keys 22B, with the keystroke portions exposed; and a main body shell (housing) 30 that surrounds and holds the keyboard 20. The leg 100 includes a pair of side plate members 110, a pedal frame 120, and a pedal device 130. In addition, the arrangement direction of the plurality of keys 22 of the keyboard 20 is set as the left-right direction (the left-right direction is set as the right-left direction). Figure 1 The left side of the key 22 is set as the left direction), and the extending direction of each key 22 is set as the front-back direction (the Figure 1 The near side of the electronic keyboard instrument 1 is set as the front side), and the up-down direction of the electronic keyboard instrument 1 is set as the up-down direction (set Figure 1 The upper side is set as the upper side) for explanation.

[0017] like Figure 1 As shown, a pair of side plate members 110 are plate-shaped members erected on the installation surface on the left and right sides of the electronic keyboard instrument 1 with both plate surfaces facing the left and right directions, supporting the main body shell 30. The pedal frame 120 connects the side plate members 110 at the lower side of each side plate member 110. The pedal device 130 is arranged at the approximately central part of the pedal frame 120 in the left and right direction. In the electronic keyboard instrument 1, the main body shell 30 of the main body 10 and the side plate members 110 of the leg 100 exposed to the outside are made of wood, and have a characteristic texture. The structure of the main body 10 is described in detail below.

[0018] like Figure 1 to Figure 3 As shown, the main body shell 30 is a horizontally long rectangular shape with the left-right direction as the longitudinal direction when viewed from the upper side and the lower side, and has thick plate-like components such as a front panel 32, a rear panel 33, a left side panel 34, a right side panel 35, a front side top panel 36F, a rear side top panel 36B and a lower panel (bottom panel) 37, and has a longitudinal section that is roughly L-shaped (refer to Figure 5 ). In addition, Figure 2 The state where the rear panel 33 is removed is shown in FIG. Figure 3 36F and the rear top plate 36B are removed. The front panel 32 is a substantially rectangular shape that is long in the left-right direction and is disposed at the lower part of the front end of the main body 10 and below the keyboard 20 to form the front surface of the main body case 30. A power button 32a is provided at the right end of the front panel 32 (see Figure 1 The rear panel 33 is a substantially rectangular shape that is long in the left-right direction, and is disposed at the rear of the main body 10 to constitute the rear surface of the main body case 30 .

[0019] The left side panel 34 and the right side panel 35 are both roughly rectangular in shape and long in the front-to-back direction, and are provided with a step in the roughly central portion in the front-to-back direction so that the front side becomes roughly the same height as the keyboard 20. The left side panel 34 and the right side panel 35 are respectively disposed on the left side and the right side of the main body 10 to constitute the left side surface and the right side surface of the main body shell 30. The front side top plate 36F is roughly rectangular in shape and long in the left-to-right direction, and is disposed on the front side of the upper rear side portion of the main body 10 to constitute a part of the upper surface of the main body shell 30. The rear side top plate 36B is roughly rectangular in shape and long in the left-to-right direction, and is disposed on the rear side of the upper rear side portion of the main body 10 to constitute a part of the upper surface of the main body shell 30. In addition, as Figure 1 and Figure 3 As shown, a volume panel section 24 having a volume button 24a and the like is provided between the keyboard 20 and the right side panel 35. Also, a setting panel section 26 having various setting buttons 26a and the like is provided between the keyboard 20 and the left side panel 34.

[0020] like Figure 1 and Figure 5 As shown in FIG. 1 , the rear side top plate 36B is installed so as to be rotatable relative to the rear panel 33 in a manner that the front side is opened. A cover plate 11 having a substantially rectangular plate shape that is long in the left-right direction is provided on the lower side of the rear side top plate 36B with both plate surfaces facing the up-down direction. The cover plate 11 has a plurality of substantially rectangular upper openings 11a that are open upward and are spaced apart in the left-right direction (see FIG. 1 ). Figure 5 ). The upper surface and side surfaces of the cover plate 11 are covered with a saran net. When the rear side top plate 36B is opened, the lower opening of the rear side top plate 36B is covered by the cover plate 11, so that the interior of the main body shell 30 cannot be seen. In addition, a music stand 36F1 is installed in the approximately middle part of the front side top plate 36F in the left-right direction. The lower panel 37 is a generally rectangular shape that is long in the left-right direction and is arranged below the main body 10 to form the lower surface of the main body shell 30.

[0021] like Figure 3 and Figure 5 As shown in the figure, a console member 12 having a substantially rectangular plate shape that is long in the left-right direction is provided on the rear side of each key 22 of the keyboard 20 with both plate surfaces facing the vertical direction. The console member 12 is provided in a manner that covers the rear end of each key 22 of the keyboard 20 at a position that overlaps with the front end of the front side top plate 36F in the vertical direction. The console member 12 prevents the inside of the main body case 30 from being seen from the outside of the electronic keyboard instrument 1 through the gap at the rear end of the keyboard 20. In addition, by providing the console member 12 on the rear side of each key 22, the movement of each key 22 in the front-back direction is restricted.

[0022] like Figure 5As shown, at the rear end of the lower surface of the console member 12, a plurality of first sheet metal members 13 are provided at intervals in the left-right direction and are substantially plate-shaped and extend downward with both plate surfaces facing the front-back direction. The lower end of the first sheet metal member 13 is attached to the lower panel 37. The rear side of the keyboard 20 is fixed relative to the main body case 30 by the first sheet metal member 13. The space in front of the first sheet metal member 13 is a space provided on the lower side of the keyboard 20. In addition, a plurality of notches, not shown, are provided at the lower end of the first sheet metal member 13. The space in front and behind the first sheet metal member 13 inside the main body case 30 is connected through the notches provided between the plurality of first sheet metal members 13 and the first sheet metal member 13.

[0023] like Figure 5 As shown, the portion between the front panel 32 and the console member 12 of the main body case 30 is open to the upper front side, and the upper surface and a portion of the front surface of the keyboard 20 as the striking surface of each key 22 are exposed to the outside through the opening portion. Figure 5 and Figure 6 As shown in FIG. 1 , a key cover (cover member) 38 is provided on the main body 10 to cover the portion of the keyboard 20 exposed to the outside. The key cover 38 is a thick plate-shaped member, and is composed of a front cover portion (first cover) 38a and a rear cover portion (second cover) 38b, which are substantially rectangular plate-shaped members long in the left-right direction and arranged in parallel front and back. The front cover portion 38a is rotatably connected to the front link member FL fixed to the main body shell 30 via the horizontally long front mounting member 14.

[0024] The rear cover portion 38b is rotatably connected to the rear link member BL fixed to the main body shell 30 via the horizontally long rear mounting member 15. The front cover portion 38a and the rear cover portion 38b are connected via a hinge so as to be foldable into two parts, and are accommodated in the space on the rear side of the first sheet metal member 13 inside the main body shell 30 so as to be freely accessible from the gap between the console member 12 and the operation panel 18 described later. In the present embodiment, by folding the key cover 38 into two parts and accommodating them inside the main body shell 30, space saving of the main body shell 30 is achieved. In addition, in the central portion (handle portion) of the front mounting member 14, two horizontally long and roughly rectangular mounting opening portions (communication holes) 14a (see FIG. 1 ) which are opened in a manner to penetrate the front mounting member 14 are respectively provided on both sides in the left-right direction. Figure 1 wait).

[0025] like Figure 5As shown, the front cover 38a is stored in the space on the rear side of the first sheet metal member 13 in a substantially horizontal posture relative to the lower panel 37, and the rear cover 38b is stored in the space on the rear side of the first sheet metal member 13 in a substantially vertical posture relative to the lower panel 37. In the state where the front cover 38a is stored in the space on the rear side of the first sheet metal member 13, the front mounting member 14 is in a posture covering the space between the rear end of the keyboard 20 and the front cover 38a, and the front mounting member 14 makes it impossible to recognize the inside of the main body case 30 from the outside of the electronic keyboard instrument 1 (view blocking function). In the electronic keyboard instrument 1, after the performance is finished, the key cover 38 is pulled out from the inside of the main body 10, and the opening of the main body case 30 where the keyboard 20 is exposed is covered, and the exposed part of the keyboard 20 is covered.

[0026] In the electronic keyboard instrument 1, when the keyboard 20 is covered by the key cover 38, the gap between the console member 12 and the operation panel 18 is covered by the rear mounting member 15. In addition, when the power is turned on and the key cover 38 is stored in the space on the rear side of the first sheet metal member 13, a slight gap is generated between the lower panel 37 and the rear mounting member 15. Therefore, when the key cover 38 is stored, the interior of the main body case 30 is divided into a front side space (first space) FS provided on the front side (keyboard 20 side) of the key cover 38 and a rear side space (second space) BS provided on the rear side (speakers 50R, 50L side described later) of the key cover 38. In other words, the interior of the main body case 30 is divided into a region on the front side of the key cover 38 and a region on the rear side of the key cover 38. When the key cover 38 is stored in the main body case 30, the outside of the main body case 30 communicates with the front side space FS through the mounting opening 14a.

[0027] like Figure 5 and Figure 6 As shown, the front side top plate 36F (in Figure 3 A second sheet metal component 16 extending in the left-right direction is installed on the lower surface of the cover (not shown). The second sheet metal component 16 is Figure 5 In the cross-sectional view shown, the operation panel 18 is roughly stepped from the front lower side to the rear upper side, and a roughly rectangular thick plate-shaped operation panel 18 that is long in the left-right direction is provided at the front end of the lower part, with the two plate surfaces facing the front-back direction. The operation panel 18 is arranged between the key cover 38 and the front side top plate 36F with a gap that is open to the front side separated by the upper and lower sides. Most of the space between the key cover 38 and the front side top plate 36F is covered by the operation panel 18, so that the rear side space BS is not visible. A part of the front surface of the operation panel 18 is a touch panel, and a plurality of switches (not shown) that accept touch operations are provided. Therefore, the operation panel 18 has a touch operation detection mechanism for performing touch operations and an LED lighting mechanism for illuminating the switches.

[0028] A substantially rectangular plate-shaped perforated member 40 that is long in the left-right direction is screwed and fixed to the front end of the upper portion of the second sheet metal member 16 that is substantially stepped, with both plate surfaces facing the front-to-back direction. The perforated member 40 is made of resin formed by injection molding, and has a plurality of holes that penetrate in the plate thickness direction. The perforated member 40 is provided on the rear side of the operating panel 18 in the form of a slight gap between the second sheet metal member 16 and the operating panel 18 in the front-to-back direction. Figure 5 As shown, the lower side portion of the perforated member 40 overlaps with the operation panel 18 in the front-rear direction.

[0029] like Figure 2 and Figure 3 As shown, the electronic keyboard instrument 1 is provided with two speakers (sound emitting components) 50R and 50L on the rear side of the upper surface of the lower panel 37 in the rear side space BS. The two speakers 50R and 50L are provided on the lower side and rear side of the keyboard 20 in the form of sound emitting parts 50R1 and 50L1 in the shape of a substantially truncated cone arranged above the lower panel 37. The sound from each sound emitting part 50R1 and 50L1 is emitted to the rear side space BS. The speaker 50R on one side (hereinafter also referred to as "the right speaker (high-pitched sound emitting component) 50R") is provided on the right side of the upper surface of the lower panel 37 and corresponds to the sound emission of the high-pitched range. The speaker 50L on the other side (hereinafter also referred to as "the left speaker (low-pitched sound emitting component) 50L") is provided on the left side of the upper surface of the lower panel 37 in the form of being parallel to the right speaker 50R in the left-right direction and corresponds to the sound emission of the low-pitched range.

[0030] In addition, two reflecting members 60 for reflecting the sound emitted from the two speakers 50R and 50L are arranged side by side in the left-right direction between the two speakers 50R and 50L and at the rear side of the upper surface of the lower panel 37, and near the center of the left-right direction. Each reflecting member 60 has a thick plate-shaped screw-fastening portion 62 that is screw-fastened and installed on the upper surface of the lower panel 37, and a thick plate-shaped rising portion 64 that rises approximately vertically from one end of the screw-fastening portion 62. The surface of the rising portion 64 of each reflecting member 60 that faces the front side is a reflecting surface 64a that reflects the sound. Each reflecting member 60 is arranged in a posture that each reflecting surface 64a is slightly inclined toward the right speaker 50R side with respect to the left-right direction. Therefore, at least a part of the sound emitted from the right speaker 50R is reflected by each reflecting surface 64a toward the front side and the approximately center side in the left-right direction.

[0031] like Figure 5As shown, a tweeter 70L is provided at a position obliquely above the front side of the left speaker 50L in the rear side space BS and at the rear side of the hole member 40. Although not shown, a tweeter is also provided at a position obliquely above the front side of the right speaker 50R in the rear side space BS and at the rear side of the hole member 40. Each tweeter 70L is substantially cylindrical and is attached to the second sheet metal member 16 via the sub sheet metal 17 attached to the inner surface side of the second sheet metal member 16 in a manner such that the column axis direction and the sound emitting direction thereof are directed obliquely above the front side (toward the hole member 40 side).

[0032] In addition, if Figure 3 As shown, two concave recesses 39R and 39L are provided in the lower panel 37 at a position slightly inside the left-right direction of the speakers 50R and 50L (approximately at the center of the lower panel 37 in the left-right direction) and slightly in front of the speakers 50R and 50L in the front-back direction. Each of the recesses 39R and 39L is exposed to the key cover 38 side in the main body case 30 (in other words, it is opposite to the key cover 38) and is provided on the plate surface of the lower panel 37 close to the key cover 38. The opening portion of each of the recesses 39R and 39L is generally rectangular with rounded corners when viewed from above. Hereinafter, the recess 39R provided near the right speaker 50R is also referred to as the right recess (high-frequency side recess) 39R, and the recess 39L provided near the left speaker 50L is also referred to as the left recess (bass side recess) 39L. The left-right dimension of the opening portion of the right recess 39R is set larger than the left-right dimension of the opening portion of the left recess 39L, and is set to a dimension slightly larger than the left recess 39L.

[0033] like Figure 3 As shown, when the player M is located at the substantially left-right center of the front side of the keyboard 20 and the main body case 30 is viewed from the upper plane, the recesses 39R and 39L are arranged on and near the imaginary straight lines VL and VL connecting the speakers 50R and 50L to the player M through the mounting openings 14a. Figure 4 Yes Figure 3 The figure is an enlarged view of each recess 39R, 39L and the vicinity of each mounting opening 14a (the portion surrounded by the dotted line). Figure 4 As shown, the outer end 39ER of the right side recess 39R and the outer end 14ER of the right side mounting opening 14a are approximately equal in position in the left-right direction, and the outer end 39EL of the left side recess 39L and the outer end 14EL of the left side mounting opening 14a are approximately equal in position in the left-right direction.

[0034] like Figure 5 and Figure 6As shown in FIG. 1 , the inner side surface of each recess 39R, 39L is a surface substantially perpendicular to the lower panel 37. Each recess 39R, 39L is provided at a position opposite to the rear cover portion 38b of the key cover 38 in the lower panel 37 when the key cover 38 is stored in the main body shell 30, and is provided in a manner spanning the front side space FS and the rear side space BS. In other words, each recess 39R, 39L communicates between the front side space FS and the rear side space BS when the key cover 38 is stored in the main body shell 30. Specifically, the center position (central position) CL of each recess 39R, 39L in the front-back direction substantially coincides with the center position of the rear cover portion 38b of the key cover 38 and the rear mounting member 15 which are set to a substantially perpendicular posture with respect to the lower panel 37. In addition, the depth dimension D1 of each recess 39R, 39L is set to be approximately half of the thickness dimension W1 of the lower panel 37.

[0035] In the present embodiment, at least a portion of the sound emitted from the right speaker 50R passes through the right recess 39R to reach the front side space FS, and at least a portion of the sound emitted from the left speaker 50L passes through the left recess 39L to reach the front side space FS. Here, the sound in the high-frequency range is difficult to reach the near front side of the main body case 30, and the sound in the low-frequency range has the characteristic of easily reaching the near front side of the main body case 30. In the present embodiment, since the right recess 39R is set to be one size larger than the left recess 39L, the high-frequency sound emitted from the right speaker 50R and reaching the front side space FS through the right recess 39R is easier to reach the front side space FS than the low-frequency sound emitted from the left speaker 50L and reaching the front side space FS through the left recess 39L.

[0036] In addition, each recess 39R, 39L is provided until it does not overlap with each speaker 50R, 50L. Each recess 39R, 39L is preferably provided until it is near each speaker 50R, 50L, but since holes for mounting each speaker 50R, 50L on the lower panel 37 are provided around each speaker 50R, 50L, it is sufficient to provide it at a distance that can ensure the strength of the lower panel 37. By providing each recess 39R, 39L until it is near each speaker 50R, 50L, the sound emitted from each speaker 50R, 50L easily reaches the right recess 39R and the left recess 39L, and the sound emission effect brought about by the sound emission path through the right recess 39R and the left recess 39L can be improved.

[0037] Next, the structure of each component provided in the front side space FS will be described. Figure 5 and Figure 6As shown, a first supporting member (supporting member) 80 is provided on the front side of the first sheet metal member 13 in the front side space FS. The first supporting member 80 is provided over substantially the entire area of ​​the lower side of the keyboard 20, and is formed into a horizontally long shape similar to the keyboard 20. The first supporting member 80 is a hollow member open downward. The keyboard 20 is supported on the main body case 30 by the first supporting member 80 and the second supporting member 88 described later. In addition, the second sheet metal member 16 described above is provided on the rear side of the first supporting member 80. In addition, the above-mentioned recesses 39R, 39L are provided in the front-back direction until they are positioned so as not to overlap with the first supporting member 80.

[0038] The front end portion of the first supporting member 80 is a convex portion 80a that protrudes in a convex shape toward the upper side. The portion of the first supporting member 80 located on the lower side of the black key 22B of each key 22 is a table-shaped portion 80b that bulges in a table shape toward the upper side. Between the convex portion 80a and the table-shaped portion 80b is a concave portion 80c that is recessed in a concave shape toward the lower side. On the rear side portion of the upper surface of the table-shaped portion 80b, there is provided a rotation fulcrum portion 80b1 that rotatably supports the rear end portion of each key 22 of the keyboard 20. In addition, a control substrate 85 is provided on the upper surface of the table-shaped portion 80b. A switch is provided on the control substrate 85 so that a sound corresponding to the struck key 22 is emitted. In the concave portion 80c, a plurality of concave portion openings 80d (refer to Figure 3 and Figure 6 ).

[0039] A plurality of hammer members 84 connected to the keys 22 are provided below the table-shaped portion 80b in the space inside the first support member 80. The hammer member 84 includes a weight portion 84a having a substantially triangular shape and an arm portion 84b extending linearly from the weight portion 84a toward the front side. The arm portion 84b is rotatably supported by a shaft support member 86 provided at the front side portion inside the table-shaped portion 80b. When each key 22 is struck, the weight portion 84a of the hammer member 84 rises, and weight can be imparted when each key 22 is struck. Thus, a keystroke feeling close to that of a real piano can be obtained.

[0040] A second support member 88 disposed on the lower panel 37 is provided in a portion of the space inside the first support member 80, which is closer to the front side than the portion where the hammer member 84 is disposed. The second support member 88 is a hollow member open downward, and is attached to the main body case 30 by being screwed to the lower panel 37. The keyboard 20 is indirectly supported by the second support member 88 to the wooden main body case 30 via the first support member 80. The shaft support member 86 that supports the arm portion 84b of the hammer member 84 is provided on the second support member 88.

[0041] Next, the communication paths P1 to P4 provided inside the main body casing 30 and serving as sound emission paths for the sounds emitted from the speakers 50R and 50L will be described. Figure 5 As shown, in the electronic keyboard instrument 1 of the present embodiment, four communication paths P1 to P4 are provided in the main body case 30 as sound emission paths for the sounds emitted from the speakers 50R, 50L to reach the outside of the main body case 30. The first communication path P1 as the first communication path is a communication path that passes from the speakers 50R, 50L through the inside of the recesses 39R, 39L to the front side space FS, passes through the lower side of the hammer members 84 from the recessed opening 80d to the upper side of the first support member 80, and reaches the outside of the main body case 30 from between the keys 22.

[0042] The second communication path P2 as the second communication path is a communication path that reaches the rear side of the first sheet metal member 13 from each speaker 50R, 50L through each recessed portion 39R, 39L, passes upward through the rear side of the first sheet metal member 13, and reaches the outside of the main body case 30 from each mounting opening 14a. In the present embodiment, most of the sound emitted to the outside of the main body case 30 through the first communication path P1 and the second communication path P2 passes through each recessed portion 39R, 39L to reach the front side space FS. Therefore, even when the gap between the rear cover 38b and the lower panel 37 is small, the sound emitted from each speaker 50R, 50L and passes through the first communication path P1 and the second communication path P2 can effectively reach the front side space FS from the rear side space BS.

[0043] In addition, at least a portion of the sound emitted from the right speaker 50R and passing through the first communication path P1 and the second communication path P2 is reflected toward the right recess 39R by the reflection surface 64a of each reflection member 60 obliquely arranged on the right speaker 50R side, and reaches the rear side of the first sheet metal member 13 through the right recess 39R. Therefore, the high-frequency sound emitted from the right speaker 50R effectively reaches the rear side of the first sheet metal member 13.

[0044] The third communication path P3 as the third communication path is a communication path that passes through the rear space BS upward from each speaker 50R, 50L, passes through the hole provided in the hole member 40, and reaches the outside of the main body case 30 from the gap between the operation panel 18 and the front top plate 36F. In addition, since the sound emitted from each high-frequency loudspeaker 70L passes through the hole provided in the hole member 40 and reaches the outside of the main body case 30, it passes through a part of the third communication path P3. The fourth communication path P4 as the fourth communication path is a communication path that passes through the rear space BS upward from each speaker 50R, 50L, and reaches the outside of the main body case 30 from the upper opening 11a of the cover plate 11. In this way, in the electronic keyboard instrument 1, by having four communication paths P1 to P4 for sound emission, a good sound image can be obtained.

[0045] As described above, the electronic keyboard musical instrument 1 according to the present embodiment comprises: a main body case 30; a keyboard 20, which is arranged on the main body case 30 and has a plurality of keys 22; each speaker 50R, 50L, which is arranged in the main body case 30; and a key cover 38, which is freely accommodated between the keyboard 20 and the speakers 50R, 50L in the main body case 30 and covers the keyboard 20 when pulled out from the main body case 30. When the key cover 38 is accommodated in the main body case 30, the main body case 30 is divided by the key cover 38 into a front side space FS on the keyboard 20 side and a rear side space BS on the speaker 50R, 50L side. In the main body case 30, recesses 39R, 39L are provided, which are exposed toward the key cover 38 and are arranged on a plate surface close to the key cover 38 so as to straddle the front side space FS and the rear side space BS.

[0046] In the electronic keyboard instrument 1 of the present embodiment configured as described above, even when the gap between the key cover 38 and the lower panel 37 is small in the state where the key cover 38 is stored in the main body case 30, a sufficient sound emission path from the rear side space BS where the speakers 50R and 50L are provided to the front side space FS where the keyboard 20 is provided can be ensured by the recesses 39R and 39L provided in the lower panel 37 without increasing the size of the main body case 30. Therefore, in the electronic keyboard instrument 1, it is possible to realize a structure in which the key cover 38 is stored in the main body case 30, while achieving space saving and obtaining a good sound image.

[0047] In the electronic keyboard musical instrument 1 according to the present embodiment, the key cover 38 has an installation opening 14a in the handle portion, and the installation opening 14a connects the outside of the main body case 30 with the front side space FS when the key cover 38 is stored in the main body case 30. According to this structure, a sound emission path is formed in the main body case 30, from the rear side space BS where the speakers 50R and 50L are provided to the front side space FS through the recesses 39R and 39L, and from the installation opening 14a to the outside of the main body case. Thus, a specific structure of the sound emission path from the rear side space BS via the recesses 39R and 39L can be provided.

[0048] Furthermore, in the electronic keyboard instrument 1 according to the present embodiment, when the player M is located at the front side in the length direction (front-rear direction) of the keys 22 of the keyboard 20 and at the substantially center portion in the arrangement direction (left-right direction) of the keys 22 of the keyboard 20, and the electronic keyboard instrument 1 is viewed from the upper plane, each mounting opening 14a is provided only on and in the vicinity of the imaginary straight line VL connecting each speaker 50R, 50L and the player M. Thus, compared with a structure in which the mounting opening 14a is provided over substantially the entire area of ​​the front mounting member 14, the sound from each speaker 50R, 50L can be effectively emitted toward the player M from each mounting opening 14a via each recess 39R, 39L while ensuring the strength, sight shielding function, and design of the front mounting member 14.

[0049] In the electronic keyboard instrument 1 according to the present embodiment, the outer ends 39ER and 39EL of the recesses 39R and 39L are substantially equal to the outer ends 14ER and 14EL of the mounting openings 14a in the left-right direction. This makes it possible to realize a structure in which the sound emitted from the speakers 50R and 50L and reaching the rear side of the first sheet metal member 13 through the recesses 39R and 39L from the rear side space BS easily reaches the mounting openings 14a, thereby improving the sound emission effect of the sound emitted from the mounting openings 14a to the outside of the main body case 30.

[0050] Furthermore, the electronic keyboard musical instrument 1 according to the present embodiment includes the first support member 80 for supporting the keyboard 20 on the main body case 30, and each of the recesses 39R and 39L is provided until it does not overlap with the first support member 80. By providing each of the recesses 39R and 39L with a size as large as possible in the limited space inside the main body case 30, it is possible to achieve space saving of the main body case 30 while improving the sound release effect of the sound released to the outside of the main body case 30 through each of the recesses 39R and 39L. Furthermore, the first support member 80 can be stably fixed to the lower panel 37.

[0051] In the electronic keyboard instrument 1 of the present embodiment, each speaker 50R, 50L includes: a left speaker 50L, which is provided on one side in the left-right direction in the main body case 30, and emits a sound on the bass side; and a right speaker 50R, which is provided on the other side in the left-right direction in the main body case 30, and emits a sound on the treble side; the recesses 39R, 39L include a left recess 39L provided near the left speaker 50L and a right recess 39R provided near the right speaker 50R; and the opening of the right recess 39R is set larger than the opening of the left recess 39L. According to this structure, by making the high-pitched sound emitted from the right speaker 50R pass through the right recess 39R whose opening is set larger, it can be made easier to reach the near front side. Therefore, the volume of the sound reaching the near front side, that is, the side of the player (the deviation of the sound of the high-pitched sound and the sound of the bass range) is suppressed from being locally dispersed in the left-right direction, and the uniformity of the sound reaching the player can be improved.

[0052] In addition, in the electronic keyboard instrument 1 according to the present embodiment, when the electronic keyboard instrument 1 is viewed from the upper plane, the openings of the recesses 39R and 39L are substantially rectangular. According to this structure, the size of the opening can be made larger than, for example, the case where the openings of the recesses 39R and 39L are substantially circular. Therefore, the sound that reaches the front side space from the rear side space BS through the recesses 39R and 39L can be easily reached, and the sound release effect of the sound released to the outside of the main body case 30 can be improved.

[0053] In the electronic keyboard musical instrument 1 of the embodiment, the key cover 38 includes a front cover portion 38a and a rear cover portion 38b connected in the longitudinal direction (front-rear direction) of the keys 22 of the keyboard 20, the front cover portion 38a is stored in the main body case 30 in a substantially horizontal posture relative to the lower panel 37, and the rear cover portion 38b is stored in the main body case 30 in a substantially vertical posture relative to the lower panel 37; the center position of each recess 39R, 39L in the front-rear direction is substantially consistent with the center position of the rear cover portion 38b in the front-rear direction. According to this structure, in each recess 39R, 39L, the size of the opening of the portion across the front side space FS is substantially equal to the size of the opening of the portion across the rear side space BS, so that the sound can effectively reach the front side space FS from the rear side space BS through each recess 39R, 39L, and the sound release effect of the sound released to the outside of the main body case 30 can be improved.

[0054] In the electronic keyboard instrument 1 of the embodiment, the depth D1 of each recess 39R, 39L is set to be approximately half the thickness W1 of the lower panel 37. This structure ensures the strength of the lower panel 37 while ensuring the sound emission path through each recess 39R, 39L.

[0055] In addition, the embodiments described above are provided as examples and are not intended to limit the scope of the invention. These new embodiments can be implemented in various other forms, and various omissions, substitutions, and changes can be made without departing from the scope of the subject matter of the invention. These embodiments and their variations are included in the scope or subject matter of the invention, and are included in the invention described in the claims and the scope of their equivalents.

[0056] For example, in the above-mentioned embodiment, a structure in which two speakers are provided on the left and right sides of the upper surface of the lower panel, respectively, is illustrated, but, for example, a structure in which two speakers are provided on the left and right sides of the upper surface of the lower panel, respectively, for a total of four speakers may be provided. Even with such a structure, by providing recesses in a form corresponding to the two speakers on one side, an electronic keyboard instrument capable of obtaining a good sound image can be realized. In addition, for example, in the above-mentioned embodiment, a structure in which a recess is provided on the lower panel is illustrated, but it is not limited thereto, for example, in the case where other plate-like components such as a reinforcing plate are provided on the upper side of the lower panel in an overlapping manner, a recess may also be provided on the plate-like component. In addition, in the case in which a plurality of plate-like components are provided on the upper side of the lower panel, a recess may also be provided on the plate-like component located at the top, i.e., the plate-like component exposed on the key cover side.

Claims

1. An electronic musical instrument, wherein: have: case; At least one operating member, disposed on the housing; A sound playing component is arranged in the housing; and The cover member is freely received between the operating member and the sound emitting member in the housing and covers the operating member when the cover member is pulled out from the housing. When the cover member is accommodated in the housing, the housing is divided into a first space on the operating member side and a second space on the sound emitting member side by the cover member. In the case, a recessed portion is provided on a plate surface close to the cover member so as to straddle the first space and the second space.

2. The electronic musical instrument according to claim 1, wherein: There are a plurality of the above-mentioned operating members, The plurality of operating members are arranged in the left-right direction of the housing and are extended in the front-rear direction of the housing. The housing has a bottom plate disposed below the operating member. The recessed portion is arranged on the plate surface of the bottom plate.

3. The electronic musical instrument according to claim 2, wherein: The cover member has a communication hole in the handle portion, and the communication hole connects the outside of the housing and the first space when the cover member is accommodated in the housing.

4. The electronic musical instrument according to claim 3, wherein: When a performer is located in front of the plurality of operating elements and approximately in the center in the left-right direction and views the electronic musical instrument from an upper plane, the recess is provided on or near an imaginary straight line connecting the sound emitting member and the performer.

5. The electronic musical instrument according to claim 4, wherein: In the arrangement direction, the outer end of the recessed portion and the outer end of the communicating hole are located at substantially the same position.

6. The electronic musical instrument according to claim 3, wherein: When a performer is located in front of the plurality of operating elements and approximately in the center in the left-right direction and views the electronic musical instrument from an upper plane, the communication hole is provided on or near an imaginary straight line connecting the sound emitting component and the performer.

7. The electronic musical instrument according to claim 1, wherein: A supporting member is provided, the supporting member being arranged on the first space side and supporting the operating member on the housing, The recessed portion is provided in the front-rear direction of the housing to a position where the recessed portion does not overlap with the supporting member.

8. The electronic musical instrument according to claim 2, wherein: The sound-playing component includes a bass-side sound-playing component and a treble-side sound-playing component. The bass-side sound-playing component is arranged on one side of the left and right directions in the housing to play the bass-side sound. The treble-side sound-playing component is arranged on the other side of the left and right directions in the housing to play the treble-side sound. The recessed portion includes a bass side recessed portion disposed close to the bass side sound emitting component and a treble side recessed portion disposed close to the treble side sound emitting component. The opening of the high-sound-side recess is larger than the opening of the low-sound-side recess.

9. The electronic musical instrument according to claim 8, wherein: The recessed portion is provided at a position closer to the center in the left-right direction than the low-sound-side sound emitting member and the high-sound-side sound emitting member.

10. The electronic musical instrument according to claim 1, wherein: When the electronic musical instrument is viewed from above, the opening of the recessed portion has a substantially rectangular shape.

11. The electronic musical instrument according to claim 2, wherein: The cover member includes a first cover and a second cover connected in the front-rear direction, the first cover is housed in the housing in a substantially horizontal position relative to the bottom plate, and the second cover is housed in the housing in a substantially vertical position relative to the bottom plate. A central position of the recessed portion in the front-rear direction substantially coincides with a central position of the second cover in a substantially vertical posture.

12. The electronic musical instrument according to claim 2, wherein: The depth dimension of the above-mentioned recessed portion is approximately half of the thickness dimension of the above-mentioned bottom plate.

13. An electronic keyboard musical instrument, wherein: An electronic musical instrument according to any one of claims 1 to 12, The electronic musical instrument has a plurality of the operating elements, and the plurality of operating elements are keyboards.

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