Electronic musical instrument and electronic keyboard instrument

Abstract

To provide an electronic musical instrument and an electronic keyboard musical instrument capable of obtaining an excellent sound image while saving a space in a configuration in which a key cover is housed in a housing.SOLUTION: An electronic keyboard instrument 1 includes a main body case 30, a keyboard 20 provided in the main body case 30 and having a plurality of keys 22, a speaker 50L provided in the main body case 30, and a key cover 38 that is housed between the keyboard 20 and the speaker 50L in the main body case 30 so as to be freely taken in and out and covers the keyboard 20 in a state of being taken out of the main body case 30. 50L, the game machine has a recessed side 39L which is exposed to a key cover 38 side in a body case 30 and is provided so as to straddle a front side space FS and a rear side space BS on a plate surface close to the key cover 38.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to an electronic musical instrument and an electronic keyboard instrument. [Background technology]

[0002] Conventionally, electronic keyboard instruments that provide a keystroke feel and tone similar to that of a real piano and that have a key cover housed within a housing have been known. For example, Patent Document 1 discloses an electronic keyboard instrument that includes an instrument body, a keyboard section disposed within the instrument body, a surface speaker unit disposed within the instrument body at the rear of the instrument body, and a fallboard disposed on the instrument body. In this electronic keyboard instrument, the fallboard has a front cover and a rear cover that are rotatably connected, and in the closed state, it covers the keyboard section from above and in the open state, it exposes the keyboard section so that it can be played. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-145803 Summary of the Invention [Problem to be solved by the invention]

[0004] In the electronic keyboard instrument described in Patent Document 1, sound emitted forward from the flat speaker unit passes through an opening in the instrument body and is projected toward the performer. However, because the fallboard is housed inside the instrument body when open, and the rear end of the keyboard is positioned below the center of the flat speaker unit, the sound path that passes under the rear end of the fallboard to the keyboard is narrowed, and sound emitted from the flat speaker unit toward the keyboard is not sufficiently projected, potentially resulting in an insufficient sound image. Furthermore, providing sufficient space for sound projection under the rear end of the fallboard would increase the size of the instrument body.

[0005] SUMMARY OF THE INVENTION An object of the present invention is to provide an electronic musical instrument and an electronic keyboard instrument that are configured such that key covers are housed within a housing, and that are capable of producing a good sound image while saving space. [Means for solving the problem]

[0006] The electronic musical instrument of the present invention comprises a housing, operators provided in the housing, a sound-emitting member provided within the housing, and a cover member that is stored in and out of the housing between the operators and the sound-emitting member and that covers the operators when the cover member is removed from the housing. When the cover member is stored within the housing, the interior of the housing is divided by the cover member into a first space on the operator side and a second space on the sound-emitting member side. The housing has a recess that is exposed to the cover member side and is provided on a plate surface adjacent to the cover member so as to straddle the first space and the second space. When the housing is viewed in a plan view from above, the recess is located on or in the vicinity of an imaginary line connecting the sound-emitting member and a player operating the operators. The housing has a sound-emitting path within it that allows sound emitted from the sound-emitting member to travel from the second space through the recess to the first space and reach the outside of the housing. [Effects of the Invention]

[0007] According to the present invention, it is possible to provide an electronic musical instrument and an electronic keyboard instrument that are configured such that a key cover is stored within a housing, and that are capable of obtaining a good sound image while saving space. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is an overall perspective view of an electronic keyboard instrument according to an embodiment, as seen from the front side; [Figure 2] 1 is a perspective view of a main body of an electronic keyboard instrument according to an embodiment, seen from the rear side, with a rear panel removed; FIG. [Figure 3] FIG. 2 is a top view of the main body of the electronic keyboard instrument according to the embodiment, with the front and rear top panels removed. [Figure 4]FIG. 4 is an enlarged view of the vicinity of the recess in FIG. 3. [Figure 5] 4 is a cross-sectional view of the main body of the electronic keyboard instrument according to the embodiment, taken along the line VV in FIG. 3. FIG. [Figure 6] 5 is a perspective cross-sectional view of a main body of the electronic keyboard instrument according to the embodiment, the perspective cross-sectional view being a cross-section corresponding to the cross-sectional view of FIG. 4. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0009] An embodiment of the present invention will be described with reference to the drawings. An electronic keyboard instrument (electronic musical instrument) 1 shown in FIG. 1 includes a main body 10 and a leg 100. As shown in FIG. 1, the main body 10 includes a keyboard (operator) 20 having a plurality of keys 22 consisting of white keys 22W and black keys 22B with keying portions exposed, and a main body case (housing) 30 that surrounds and holds the keyboard 20. The leg 100 includes a pair of side panel members 110, a pedal frame 120, and a pedal device 130. In the following description, the arrangement direction of the plurality of keys 22 on the keyboard 20 is defined as the left-right direction (the left side of FIG. 1 is defined as the leftward direction), the extension direction of each key 22 is defined as the front-rear direction (the front side of FIG. 1 is defined as the frontward direction), and the up-down direction of the electronic keyboard instrument 1 is defined as the up-down direction (the upper side of FIG. 1 is defined as the upward direction).

[0010] As shown in FIG. 1 , a pair of side plate members 110 are plate-like members that are erected on the installation surface on both the left and right sides of the electronic keyboard instrument 1 with their plate surfaces facing left and right, and support the main body case 30. The pedal frame 120 connects the side plate members 110 below each other. The pedal device 130 is provided in approximately the center of the pedal frame 120 in the left and right direction. In the electronic keyboard instrument 1, the main body case 30 of the main body 10 that is exposed to the outside and each side plate member 110 of the leg 100 are both made of wood, giving them a distinctive texture. The configuration of the main body 10 will be described in detail below.

[0011] As shown in FIGS. 1 to 3, the main body case 30 has a horizontally elongated, generally rectangular shape with the longitudinal direction extending in the left-right direction when viewed from above and below. It includes thick plate-like members: a front panel 32, a rear panel 33, a left panel 34, a right panel 35, a front top panel 36F, a rear top panel 36B, and a lower panel (bottom panel) 37, and has a generally L-shaped vertical cross section (see FIG. 5). Note that FIG. 2 shows the main body case 30 with the rear panel 33 removed, and FIG. 3 shows the main body case 30 with the front top panel 36F and rear top panel 36B removed. The front panel 32 has a generally rectangular shape that is elongated in the left-right direction and is located at the lower portion of the front end of the main body 10 and below the keyboard 20, constituting 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 FIG. 1). The rear panel 33 has a generally rectangular shape that is elongated in the left-right direction and is located at the rear of the main body 10, constituting the rear surface of the main body case 30.

[0012] The left side panel 34 and the right side panel 35 are both generally rectangular and elongated in the front-to-rear direction, with a step provided in the approximate center in the front-to-rear direction so that the front side is at approximately the same height as the keyboard 20. The left side panel 34 and the right side panel 35 are respectively provided on the left and right sides of the main body 10, constituting the left and right sides of the main body case 30. The front top panel 36F is generally rectangular and elongated in the left-to-right direction, and is provided on the front side of the upper rear portion of the main body 10, constituting a portion of the top surface of the main body case 30. The rear top panel 36B is generally rectangular and elongated in the left-to-right direction, and is provided on the rear side of the upper rear portion of the main body 10, constituting a portion of the top surface of the main body case 30. As shown in FIGS. 1 and 3 , a volume panel 24, on which a volume knob 24a and other controls are arranged, is provided between the keyboard 20 and the right side panel 35. In addition, a setting panel 26, on which various setting buttons 26a and other controls are arranged, is provided between the keyboard 20 and the left side panel 34.

[0013] As shown in FIGS. 1 and 5, the rear top panel 36B is rotatably attached to the rear panel 33 so that its front side opens. A cover panel 11, which is a generally rectangular plate elongated in the left-right direction, is provided below the rear top panel 36B with both plate surfaces facing up and down. The cover panel 11 has a plurality of generally rectangular upper openings 11a that open upward at intervals in the left-right direction (see FIG. 5). The top and side surfaces of the cover panel 11 are covered with a saran net. When the rear top panel 36B is open, the cover panel 11 covers the lower openings of the rear top panel 36B, preventing the interior of the main body case 30 from being seen. A music stand 36F1 is attached to the front top panel 36F at approximately the center in the left-right direction. The lower panel 37, which is generally rectangular elongated in the left-right direction and is provided below the main body 10, forms the lower surface of the main body case 30.

[0014] 3 and 5, a console member 12, which is a generally rectangular plate elongated in the left-right direction, is provided behind each key 22 of the keyboard 20 with both plate surfaces facing up and down. The console member 12 is provided so as to overlap the front end of the front top panel 36F in the up-down direction and cover the rear ends of each key 22 of the keyboard 20. The console member 12 prevents the interior of the main body case 30 from being seen from outside the electronic keyboard instrument 1 through the gap at the rear end of the keyboard 20. Furthermore, by providing the console member 12 behind each key 22, the movement of each key 22 in the front-to-rear direction is restricted.

[0015] As shown in FIG. 5 , a plurality of first sheet metal members 13, each having a generally plate shape and extending downward with both plate surfaces facing the front-rear direction, are provided at intervals in the left-right direction at the rear end of the underside of the console member 12. The lower ends of the first sheet metal members 13 are attached to the lower panel 37. The rear side of the keyboard 20 is fixed to the main body case 30 by the first sheet metal members 13. The space in front of the first sheet metal members 13 is a space provided below the keyboard 20. The lower end of the first sheet metal members 13 is provided with a plurality of notches (not shown). The spaces in front of and behind the first sheet metal members 13 inside the main body case 30 are connected by the spaces between the plurality of first sheet metal members 13 and the notches provided in the first sheet metal members 13.

[0016] As shown in Fig. 5, the main body case 30 has an opening at the upper front between the front panel 32 and the console member 12, and the upper surface, which is the striking surface of each key 22 of the keyboard 20, and a portion of the front surface are exposed to the outside through this opening. As shown in Figs. 5 and 6, the main body 10 is provided with a key cover 38 that covers the exposed portion of the keyboard 20. The key cover 38 is a thick plate-like 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-like members that are elongated in the left-right direction, arranged side by side in the front-to-back direction. The front cover portion 38a is rotatably connected to a front link member FL fixed to the main body case 30 via a horizontally elongated front attachment member 14.

[0017] The rear cover portion 38b is rotatably connected to a rear link member BL fixed to the main body case 30 via a horizontally elongated rear mounting member 15. The front cover portion 38a and the rear cover portion 38b are foldably connected via hinges and are stored in and out of the space behind the first sheet metal member 13 inside the main body case 30 through a gap between the console member 12 and an operation plate 18 (described later). In this embodiment, the key cover 38 is folded in half and stored inside the main body case 30 in this manner, thereby saving space in the main body case 30. Two horizontally elongated, approximately rectangular mounting openings (communication holes) 14a that open so as to penetrate the front mounting member 14 are provided on both left and right sides of a portion (handle portion) near the center of the front mounting member 14 (see FIG. 1, etc.).

[0018] 5, the front cover portion 38a is stored in the space behind the first sheet metal member 13 in an orientation that is approximately horizontal with respect to the lower panel 37, and the rear cover portion 38b is stored in the space behind the first sheet metal member 13 in an orientation that is approximately perpendicular to the lower panel 37. When the front cover portion 38a is stored in the space behind the first sheet metal member 13, the front attachment member 14 is oriented to cover the space between the rear end of the keyboard 20 and the front cover portion 38a, and the front attachment member 14 makes it impossible to see the inside of the main body case 30 from the outside of the electronic keyboard instrument 1 (a concealing function). With the electronic keyboard instrument 1, after finishing playing, for example, by pulling the key cover 38 out from inside the main body unit 10, the opening of the main body case 30 through which the keyboard 20 is exposed is covered, and the exposed portion of the keyboard 20 is also covered.

[0019] 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 plate 18 is covered by the rear attachment member 15. Furthermore, when the power is turned on and the key cover 38 is stored in the space behind the first sheet metal member 13, a small gap is created between the lower panel 37 and the rear attachment member 15. Therefore, when the key cover 38 is stored, the interior of the main body case 30 is divided into a front space (first space) FS provided in front of the key cover 38 (on the keyboard 20 side) and a rear space (second space) BS provided behind the key cover 38 (on the side of each speaker 50R, 50L described below). In other words, the interior of the main body case 30 is divided into an area in front of the key cover 38 and an area behind the key cover 38. When the key cover 38 is stored in the main body case 30, the attachment opening 14a provides communication between the outside of the main body case 30 and the front space FS.

[0020] As shown in FIGS. 5 and 6 , a second sheet metal member 16 extending in the left-right direction is attached to the underside of the front top panel 36F (not shown in FIG. 3 ). In the cross-sectional view shown in FIG. 5 , the second sheet metal member 16 has a generally stepped shape extending from the lower front to the upper rear. An operation plate 18, which is a generally rectangular, thick plate elongated in the left-right direction, is provided at the front end of the lower portion of the second sheet metal member 16, with both plate surfaces facing the front-rear direction. The operation plate 18 is disposed between the key cover 38 and the front top panel 36F, with gaps opening forward on both the top and bottom sides. The operation plate 18 covers most of the space between the key cover 38 and the front top panel 36F, preventing the rear space BS from being seen. A portion of the front surface of the operation plate 18 is a touch panel, and multiple switches (not shown) that accept touch operations are provided. Therefore, the operation plate 18 includes a touch operation detection mechanism for performing touch operations and an LED illumination mechanism for illuminating the switches.

[0021] A perforated member 40, which is a generally rectangular plate elongated in the left-right direction, is attached to the front end of the upper portion of the generally stepped second sheet metal member 16 by screws with both plate surfaces facing the front-rear direction. The perforated member 40 is made of resin by injection molding and has a plurality of holes penetrating through it in the plate thickness direction. The perforated member 40 is also attached to the second sheet metal member 16 behind the operation plate 18 with a small gap between it and the operation plate 18 in the front-rear direction. As shown in FIG. 5 , the lower portion of the perforated member 40 overlaps with the operation plate 18 in the front-rear direction.

[0022] 2 and 3, the electronic keyboard instrument 1 is provided with two speakers (sound-emitting members) 50R, 50L on the rear side of the upper surface of the lower panel 37 in the rear space BS. Both speakers 50R, 50L are provided below and rearward of the keyboard 20, with their approximately truncated cone-shaped sound-emitting sections 50R1, 50L1 disposed above the lower panel 37. Sound from each sound-emitting section 50R1, 50L1 is emitted into the rear space BS. One speaker, 50R (hereinafter also referred to as the "right speaker (treble-pitch sound-emitting member) 50R"), is provided on the right side of the upper surface of the lower panel 37 and is capable of emitting high-pitched sounds. The other speaker 50L (hereinafter also referred to as the "left speaker (low-frequency sound-emitting member) 50L") is arranged in parallel with the right speaker 50R in the left-right direction, on the left side of the upper surface of the lower panel 37, and is capable of emitting low-frequency sound.

[0023] Two reflective members 60 that reflect sound emitted from the speakers 50R and 50L are arranged side by side in the left-right direction on the rear side of the upper surface of the lower panel 37, near the center in the left-right direction. Each reflective member 60 has a thick, plate-like screw-fastened portion 62 that is screwed to the upper surface of the lower panel 37 and a thick, plate-like raised portion 64 that rises approximately vertically from one end of the screw-fastened portion 62. The surface of the raised portion 64 of each reflective member 60 facing forward serves as a reflective surface 64a that reflects sound. Each reflective member 60 is positioned such that each reflective surface 64a is slightly tilted toward the right speaker 50R in the left-right direction. Therefore, at least a portion of the sound emitted from the right speaker 50R is reflected forward and approximately toward the center in the left-right direction by each reflective surface 64a.

[0024] 5, a tweeter 70L is provided at a position diagonally above and forward of the left speaker 50L in the rear space BS and on the rear side of the perforated member 40. Although not shown, a tweeter is also provided at a position diagonally above and forward of the right speaker 50R in the rear space BS, on the rear side of the perforated member 40. Each tweeter 70L is substantially cylindrical and is attached to the second sheet metal member 16 via a sub-sheet metal member 17 attached to the inner surface of the second sheet metal member 16, with its column axis direction and sound emission direction facing diagonally above and forward (towards the perforated member 40).

[0025] As shown in FIG. 3 , the lower panel 37 is provided with two upwardly open concave recesses 39R, 39L at positions slightly inward of the speakers 50R, 50L in the left-right direction (approximately toward the center of the lower panel 37 in the left-right direction) and slightly forward of the speakers 50R, 50L in the front-rear direction. Each recess 39R, 39L is exposed toward the key cover 38 inside the main body case 30 (i.e., faces the key cover 38) and is provided on the surface of the lower panel 37 adjacent to the key cover 38. The opening of each recess 39R, 39L is approximately rectangular with rounded corners when viewed from above. Hereinafter, the recess 39R located closer to the right speaker 50R will be referred to as the right recess (treble-side recess) 39R, and the recess 39L located closer to the left speaker 50L will be referred to as the left recess (bass-side recess) 39L. The right recess 39R has an opening whose left-right dimension is larger than the opening of the left recess 39L, and is provided with a size slightly larger than that of the left recess 39L.

[0026] As shown in Fig. 3, when the player M is positioned approximately in the center in the left-right direction in front of the keyboard 20 and the main body case 30 is viewed in plan from above, the recesses 39R, 39L are located on and in the vicinity of imaginary lines VL, VL that pass through the mounting openings 14a and connect the players M to the speakers 50R, 50L. Fig. 4 is an enlarged view of the recesses 39R, 39L and the mounting openings 14a in Fig. 3 (areas surrounded by dashed lines). As shown in Fig. 4, the outer end 39ER of the right recess 39R and the outer end 14ER of the right mounting opening 14a are positioned approximately equal to each other in the left-right direction, and the outer end 39EL of the left recess 39L and the outer end 14EL of the left mounting opening 14a are positioned approximately equal to each other in the left-right direction.

[0027] As shown in FIGS. 5 and 6 , the inner surface of each recess 39R, 39L is substantially perpendicular to the bottom plate 37. Each recess 39R, 39L is located on the bottom plate 37 at a position facing the rear cover portion 38b of the key cover 38 when the key cover 38 is housed in the main body case 30, and is arranged to straddle the front space FS and the rear space BS. In other words, each recess 39R, 39L communicates between the front space FS and the rear space BS when the key cover 38 is housed in the main body case 30. Specifically, the center position CL of each recess 39R, 39L in the front-to-rear 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 oriented substantially perpendicular to the bottom plate 37. The depth dimension D1 of each recess 39R, 39L is approximately half the thickness dimension W1 of the bottom plate 37.

[0028] In this embodiment, at least a portion of the sound emitted from the right speaker 50R passes through the right recess 39R to reach the front 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 space FS. Here, high-frequency sounds have a tendency to not reach the front side of the main body case 30, while low-frequency sounds have a tendency to reach the front side of the main body case 30. In this embodiment, the right recess 39R is slightly larger than the left recess 39L, so high-frequency sounds that are emitted from the right speaker 50R and reach the front space FS through the right recess 39R are more likely to reach the front space FS than low-frequency sounds that are emitted from the left speaker 50L and reach the front space FS through the left recess 39L.

[0029] The recesses 39R, 39L are provided in positions that do not overlap with the speakers 50R, 50L. While it is preferable that the recesses 39R, 39L are provided close to the speakers 50R, 50L, holes for attaching the speakers 50R, 50L to the bottom panel 37 are provided around the speakers 50R, 50L, the recesses 39R, 39L may be provided at a distance that ensures the strength of the bottom panel 37. By providing the recesses 39R, 39L close to the speakers 50R, 50L, sounds emitted from the speakers 50R, 50L can more easily reach the right recess 39R and the left recess 39L, thereby improving the sound emission effect of the sound emission path that passes through the right recess 39R and the left recess 39L.

[0030] Next, the configuration of each member provided in the front space FS will be described. As shown in Figures 5 and 6, a first support member (support member) 80 is provided on the front side of the first sheet metal member 13 in the front space FS. The first support member 80 is provided across substantially the entire area below the keyboard 20 and has a horizontally elongated shape similar to the keyboard 20. The first support member 80 is a hollow member that is open downward. The keyboard 20 is supported on the main body case 30 by the first support member 80 and a second support member 88, which will be described later. The second sheet metal member 16, described above, is provided on the rear side of the first support member 80. The recesses 39R, 39L described above are provided at positions that do not overlap with the first support member 80 in the front-rear direction.

[0031] The front end of the first support member 80 forms a convex portion 80a that protrudes upward. The portion of the first support member 80 located below the black key 22B of each key 22 forms a platform portion 80b that protrudes upward like a platform. Between the convex portion 80a and the platform portion 80b, a concave portion 80c is formed, concavely recessed downward. The rear portion of the top surface of the platform portion 80b is provided with a pivot point 80b1 that rotatably supports the rear end of each key 22 on the keyboard 20. A control board 85 is also provided on the top surface of the platform portion 80b. The control board 85 is provided with a switch that generates a sound corresponding to the depressed key 22. The concave portion 80c is provided with multiple platform openings 80d that open in the front-rear and up-down directions and are aligned in the left-right direction (see FIGS. 3 and 6).

[0032] A plurality of hammer members 84, which are connected to the respective keys 22, are provided in the space inside the first support member 80 below the base portion 80b. Each hammer member 84 includes a substantially triangular weight portion 84a and an arm portion 84b that extends linearly forward from the weight portion 84a. The arm portion 84b is rotatably supported by a pivot support member 86 provided on the front portion of the inside of the base portion 80b. When a key 22 is struck, the weight portion 84a of each hammer member 84 rises, imparting weight to each key 22 when struck. This provides a keystroke sensation similar to that of a real piano.

[0033] A second support member 88, which is disposed on the bottom plate 37, is provided in a portion of the space inside the first support member 80 that is forward of the portion where the hammer members 84 are disposed. The second support member 88 is a hollow member that opens downward, and is attached to the main case 30 by being screwed to the bottom plate 37. The second support member 88 indirectly supports the keyboard 20 via the first support member 80 with respect to the main case 30, which is made of wood. A pivot support member 86 that supports the arm portion 84b of the hammer member 84 is provided on the second support member 88.

[0034] Next, we will explain the communication paths P1 to P4 that are provided inside the main body case 30 and serve as sound emission paths for sounds emitted from the speakers 50R, 50L. As shown in Fig. 5, the electronic keyboard instrument 1 of this embodiment has four communication paths P1 to P4 provided inside the main body case 30, which are sound emission paths for sounds emitted from the speakers 50R, 50L to reach the outside of the main body case 30. The first communication path P1 is a communication path that runs from each speaker 50R, 50L through each recess 39R, 39L to the front space FS, passes below each hammer member 84, passes through the recess openings 80d to the upper side of the first support member 80, and then runs between each key 22 to the outside of the main body case 30.

[0035] The second communication path P2, which is the second communication path, extends from each speaker 50R, 50L through each recess 39R, 39L to the rear side of the first sheet metal member 13, passes upward through the rear side of the first sheet metal member 13, and then passes through each mounting opening 14a to the outside of the main body case 30. In this embodiment, most of the sound emitted to the outside of the main body case 30 via the first communication path P1 and the second communication path P2 passes through each recess 39R, 39L to the front space FS. Therefore, even if the gap between the rear cover portion 38b and the lower panel 37 is small, sound emitted from each speaker 50R, 50L and passing through the first communication path P1 and the second communication path P2 can efficiently reach the front space FS from the rear space BS.

[0036] 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 reflecting surfaces 64a of the reflecting members 60 arranged at an angle toward the right speaker 50R, passes through the right recess 39R, and reaches the rear side of the first sheet metal member 13. Therefore, high-frequency sounds emitted from the right speaker 50R efficiently reach the rear side of the first sheet metal member 13.

[0037] The third communication path, the third communication path P3, extends from each speaker 50R, 50L upward through the rear space BS, passes through holes in the perforated member 40, and reaches the outside of the main body case 30 via the gap between the operation panel 18 and the front top plate 36F. The sound emitted from each tweeter 70L passes through a portion of the third communication path P3 before passing through the holes in the perforated member 40 and reaching the outside of the main body case 30. The fourth communication path, the fourth communication path P4, extends from each speaker 50R, 50L upward through the rear space BS, and reaches the outside of the main body case 30 via the upper opening 11a of the cover plate 11. Thus, the electronic keyboard instrument 1 has four communication paths P1 to P4 for emitting sound, thereby enabling a good sound image to be obtained.

[0038] As described above, the electronic keyboard instrument 1 of this embodiment comprises a main body case 30, a keyboard 20 provided in the main body case 30 and having a plurality of keys 22, speakers 50R, 50L provided within the main body case 30, and a key cover 38 that is stored in and removable between the keyboard 20 and the speakers 50R, 50L within the main body case 30 and covers the keyboard 20 when removed from the main body case 30. When the key cover 38 is stored within the main body case 30, the inside of the main body case 30 is divided by the key cover 38 into a front space FS on the keyboard 20 side and a rear space BS on the speakers 50R, 50L side, and recesses 39R, 39L are provided on the plate surface exposed to the key cover 38 within the main body case 30 and adjacent to the key cover 38, spanning the front space FS and the rear space BS.

[0039] In the electronic keyboard instrument 1 of this embodiment configured as described above, even if the gap between the key cover 38 and the lower panel 37 is small when the key cover 38 is stored in the main body case 30, a sufficient sound emission path can be secured from the rear space BS, where the speakers 50R, 50L are provided, to the front space FS, where the keyboard 20 is provided, by the recesses 39R, 39L provided in the lower panel 37, without increasing the size of the main body case 30. Therefore, in the electronic keyboard instrument 1, a configuration in which the key cover 38 is stored in the main body case 30 is realized, and a good sound image can be obtained while saving space.

[0040] Furthermore, in the electronic keyboard instrument 1 according to this embodiment, the key cover 38 has an attachment opening 14a in the handle portion that connects the outside of the main body case 30 to the front space FS when the key cover 38 is stored in the main body case 30. With this configuration, a sound emission path is formed within the main body case 30 that runs from the rear space BS, in which the speakers 50R, 50L are provided, through the recesses 39R, 39L to the front space FS, and then from the attachment opening 14a to the outside of the main body case. This makes it possible to provide a specific configuration for the sound emission path that runs from the rear space BS through the recesses 39R, 39L.

[0041] Furthermore, in the electronic keyboard instrument 1 according to this embodiment, when the player M is positioned in front of the keys 22 of the keyboard 20 in the longitudinal direction (front-rear direction) and approximately in the center of the arrangement direction (left-right direction) of the keys 22 of the keyboard 20 and the electronic keyboard instrument 1 is viewed in plan from above, the mounting openings 14a are only provided on and near the imaginary line VL connecting the speakers 50R, 50L and the player M. This ensures the strength, concealment function, and design of the front mounting member 14, while allowing the sound from the speakers 50R, 50L to be effectively emitted from the mounting openings 14a via the recesses 39R, 39L toward the player M, as compared to a configuration in which the mounting openings 14a are provided over approximately the entire area of ​​the front mounting member 14.

[0042] Furthermore, in the electronic keyboard instrument 1 according to this embodiment, the outer ends 39ER, 39EL of the recesses 39R, 39L and the outer ends 14ER, 14EL of the mounting openings 14a are made substantially equal in the left-right direction. This allows for a configuration in which sounds emitted from the speakers 50R, 50L and passing through the rear space BS to the rear side of the first sheet metal member 13 via the recesses 39R, 39L can easily reach the mounting openings 14a, thereby improving the sound emission effect of sounds emitted from the mounting openings 14a to the outside of the main body case 30.

[0043] Furthermore, the electronic keyboard instrument 1 according to this embodiment is equipped with a first support member 80 that supports the keyboard 20 relative to the main body case 30, and the recesses 39R, 39L are provided in positions that do not overlap with the first support member 80. By providing the recesses 39R, 39L in as large a size as possible within the limited space inside the main body case 30 in this way, it is possible to conserve space within the main body case 30 while increasing the sound emission effect of the sound that passes through the recesses 39R, 39L and is emitted to the outside of the main body case 30. Furthermore, the first support member 80 can be stably fixed to the bottom panel 37.

[0044] In the electronic keyboard instrument 1 according to this embodiment, the speakers 50R, 50L include a left speaker 50L located on one side of the main body case 30 in the left-right direction and emitting low-pitched sounds, and a right speaker 50R located on the other side of the main body case 30 in the left-right direction and emitting high-pitched sounds, and the recesses 39R, 39L include a left recess 39L located closer to the left speaker 50L and a right recess 39R located closer to the right speaker 50R, with the opening of the right recess 39R being larger than the opening of the left recess 39L. With this configuration, high-pitched sounds emitted from the right speaker 50R can be more easily transmitted to the front by passing through the right recess 39R with its larger opening. This prevents the volume of the sound reaching the front side, i.e., the performer's side, from being scattered locally across the left and right (variation between high-pitched sounds and low-pitched sounds), thereby improving the sense of uniformity of the sound reaching the performer.

[0045] Furthermore, in the electronic keyboard instrument 1 according to this embodiment, the openings of the recesses 39R, 39L are generally rectangular when viewed from above. This configuration allows the size of the openings to be larger than when the openings of the recesses 39R, 39L are generally circular. This makes it easier for sound to travel from the rear space BS through the recesses 39R, 39L to the front space, thereby improving the sound emission effect of the sound emitted outside the main body case 30.

[0046] Furthermore, in the electronic keyboard instrument 1 according to the embodiment, the key cover 38 has 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, and is stored in the main body case 30 with the front cover portion 38a positioned substantially horizontally relative to the bottom panel 37, and the rear cover portion 38b positioned substantially perpendicularly relative to the bottom panel 37, and the center position of each recess 39R, 39L in the front-rear direction substantially coincides with the center position of the rear cover portion 38b in the front-rear direction. With this configuration, in each recess 39R, 39L, the size of the opening of the portion spanning the front space FS and the size of the opening of the portion spanning the rear space BS are substantially equal, so that sound can efficiently reach the front space FS from the rear space BS through each recess 39R, 39L, and the sound emission effect of sound emitted to the outside of the main body case 30 can be improved.

[0047] Furthermore, in the electronic keyboard instrument 1 according to the embodiment, the depth dimension D1 of each of the recesses 39R, 39L is set to be approximately half the thickness dimension W1 of the lower panel 37. With this configuration, the strength of the lower panel 37 can be ensured while a sound emission path passing through each of the recesses 39R, 39L is secured.

[0048] The above-described embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be embodied in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included within the scope and spirit of the invention, and are also included in the scope of the inventions and their equivalents as defined in the claims.

[0049] For example, in the above embodiment, a configuration in which two speakers are provided, one on each side of the upper surface of the lower panel, for a total of two speakers, is illustrated. However, for example, a configuration in which two speakers are provided on each side of the upper surface of the lower panel, for a total of four speakers, for example, two on each side of the upper surface of the lower panel, for example, can be used. Even with such a configuration, an electronic keyboard instrument capable of producing a good sound image can be realized by providing recesses corresponding to the two speakers on each side. Also, for example, in the above embodiment, a configuration in which a recess is provided on the lower panel is illustrated. For example, if another plate-like member, such as a reinforcing plate, is provided above the lower panel, a recess may be provided on that plate-like member. Furthermore, if multiple plate-like members are provided above the lower panel, a recess may be provided on the uppermost plate-like member, i.e., the plate-like member exposed on the key cover side. [Explanation of symbols]

[0050] 1: electronic keyboard instrument 10: main body 11: cover plate 11a: upper opening 12: console member 13: first sheet metal member 16: second sheet metal member 18: operation panel 20: keyboard 22: key 24: volume panel 26: setting panel 30: main body case 32: front panel 33: rear panel 34: left side panel 35: right side panel 36B: rear top panel 36F: front top panel 37: bottom panel 38: key cover 39L: left side recess 39R: right side recess 40: perforated member 50L: left speaker 50R: right speaker 60: reflecting member 80: first support member 84: hammer member 85: control board 86: pivot support member 88: second support member 120: pedal frame 130: pedal device BS: rear space CL: Center position D1: Depth dimension FL: Front link member FS: Front space P1: First communication passage P2: Second communication passage P3: Third communication passage P4: Fourth communication passage VL: Virtual line

Claims

1. The housing and an operator provided on the housing; a sound emitting member provided within the housing; a cover member that is removably housed between the operator and the sound emitting member in the housing and that covers the operator when the operator is removed from the housing, an interior of the housing is divided by the cover member into a first space on the operating element side and a second space on the sound emitting member side when the cover member is housed in the housing, and the interior of the housing has a recess that is exposed to the cover member side and is provided on a plate surface close to the cover member so as to straddle the first space and the second space; the recess is disposed on or in the vicinity of an imaginary line connecting the sound emitting member and a player who operates the control when the housing is viewed in plan from above, a sound emitting path through which sound emitted from the sound emitting member travels from the second space through the recess to the first space and reaches the outside of the housing; Electronic musical instrument.

2. the operators are arranged in a left-right direction of the housing and extend in a front-rear direction of the housing, the housing has a bottom plate provided below the operator, The recess is provided on the plate surface of the bottom plate.

2. The electronic musical instrument according to claim 1.

3. The cover member has a communication hole in a handle portion, the communication hole communicating between the outside of the housing and the first space when the cover member is housed in the housing.

3. The electronic musical instrument according to claim 2.

4. the recess is provided on or in the vicinity of an imaginary line connecting the sound emitting member and the player when the player is positioned in front of the operator and approximately in the center in the left-right direction and the housing is viewed in plan from above.

4. The electronic musical instrument according to claim 3.

5. an outer end of each of the recesses and an outer end of each of the communication holes are positioned at substantially the same position in the arrangement direction; 5. The electronic musical instrument according to claim 4.

6. the communication hole is provided on or in the vicinity of an imaginary line connecting the sound emitting member and the player when the player is positioned in front of the operator and approximately in the center in the left-right direction and the housing is viewed in plan from above.

4. The electronic musical instrument according to claim 3.

7. a support member for supporting the operation element on the housing; The recess is provided at a position where it does not overlap with the support member.

2. The electronic musical instrument according to claim 1.

8. the sound emitting member includes a low-pitched sound emitting member provided on one side in the left-right direction within the housing and emitting low-pitched sounds, and a high-pitched sound emitting member provided on the other side in the left-right direction within the housing and emitting high-pitched sounds, the recessed portion includes a bass-side recessed portion provided closer to the bass-side sound-emitting member and a treble-side recessed portion provided closer to the treble-side sound-emitting member, The opening of the treble-side recess is larger than the opening of the bass-side recess.

3. The electronic musical instrument according to claim 2.

9. The opening of the recess has a substantially rectangular shape when the housing is viewed from above in a plan view.

2. The electronic musical instrument according to claim 1.

10. the cover member has a first cover and a second cover connected in the front-rear direction, the first cover is stored in the housing in an orientation that is approximately horizontal with respect to the bottom plate, and the second cover is stored in the housing in an orientation that is approximately vertical with respect to the bottom plate, a center position of the recess in the longitudinal direction substantially coincides with a center position of the second cover in the front-rear direction; 3. The electronic musical instrument according to claim 2.

11. The recess has a depth dimension that is approximately half the thickness dimension of the bottom plate.

3. The electronic musical instrument according to claim 2.

12. The electronic musical instrument according to any one of claims 1 to 11, the operator is a keyboard having a plurality of keys, Electronic keyboard instrument.

Images