Electronic musical instrument and electronic keyboard musical instrument

Abstract

An electronic musical instrument and an electronic keyboard instrument capable of optimizing a playback angle from a playback member for a player. The present invention is provided with: a main body case (30); a keyboard (20) provided inside the main body case and having a plurality of keys arranged in the left-right direction of the main body case; each speaker (50R) and each high-frequency speaker, which are provided inside the main body case; and a perforated member (40), the wall part (42) extends in the left-right direction, and the low inclined hole forms an acute angle relative to the front-back direction and is opened in the wall part in a manner of inclining upwards from the inner side of the main body shell to the outer side. And a high inclined hole that opens in the wall portion so as to be inclined at an acute angle greater than the angle of the low inclined hole from the inside toward the outside of the main body case with respect to the front-rear direction, the perforated member including a plurality of low inclined regions having the low inclined hole and a plurality of high inclined regions having a high inclined hole (46). The low inclined region and the high inclined region are arranged adjacent to each other along the left-right direction.

Description

Technical Field

[0001] The present disclosure relates to electronic musical instruments and electronic keyboard instruments. Background Art

[0002] In the past, it is known that in electronic musical instruments that can obtain a percussion feeling and tone close to that of a real piano, a sound-releasing hole is provided for emitting the sound from a sound-releasing member such as a speaker to the outside of a frame. For example, Japanese Patent Publication No. 11-52955 discloses a speaker device for an electronic organ, which includes a speaker and two grilles as sound-releasing holes arranged in a manner opposite to the speaker. In this speaker device, each grille is composed of a left and right variable grille and an upper and lower variable grille, and the sound-releasing angle of the sound from the speaker can be changed by changing the angle of the blade plates of the left and right variable grille and the upper and lower variable grille. Summary of the invention

[0003] Problems to be solved by the invention

[0004] In the speaker device disclosed in Japanese Patent Application Laid-Open No. 11-52955, the sound emitting angle for the performer can be adjusted by making the sound emitting angles of one grille and the other grille different. However, the speaker device disclosed in Japanese Patent Application Laid-Open No. 11-52955 cannot cope with the situation where the sound emitting angle for the performer is optimized without providing a movable mechanism such as a rotation.

[0005] An object of the present disclosure is to provide an electronic musical instrument and an electronic keyboard musical instrument capable of optimizing the sound emitting angle from a sound emitting member for a player.

[0006] Means used to solve problems

[0007] The electronic musical instrument disclosed herein comprises: a frame; an operating member arranged in the frame, arranged in the left-right direction of the frame, and extending in the front-rear direction of the frame; a sound emitting member arranged in the frame; and a perforated member having a wall portion extending in the left-right direction, a first inclined hole, and a second inclined hole, the first inclined hole opening in the wall portion in a manner of forming an acute angle with respect to the front-rear direction and inclining from the inner side of the frame toward the outer side, the second inclined hole opening in the wall portion in a manner of inclining from the inner side of the frame toward the outer side with respect to the front-rear direction at an acute angle larger than the angle of the first inclined hole with respect to the front-rear direction, the perforated member including a plurality of first inclined regions having the first inclined holes and a plurality of second inclined regions having the second inclined holes, the plurality of first inclined regions and a plurality of second inclined regions being arranged along the left-right direction in a manner of configuring the first inclined regions and the second inclined regions to be adjacent to each other.

[0008] The electronic keyboard musical instrument disclosed in the present invention includes the above-mentioned electronic musical instrument, wherein the operation element is a keyboard having a plurality of keys.

[0009] Effects of the Invention

[0010] According to the present disclosure, it is possible to provide an electronic musical instrument and an electronic keyboard musical instrument capable of optimizing the sound emitting angle from the sound emitting member for a player. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is an overall perspective view of the electronic keyboard instrument according to the first embodiment as viewed from the front.

[0012] Figure 2 This is a perspective view of the main body of the electronic keyboard instrument according to the first embodiment as viewed from the rear side.

[0013] Figure 3 This is a perspective view of the main body of the electronic keyboard instrument according to the first embodiment as viewed from the front side, with the front top plate and the right side panel removed.

[0014] Figure 4 is a cross-sectional view of the main body of the electronic keyboard instrument according to the first embodiment, Figure 2 Cross-sectional view of section IV-IV in FIG.

[0015] Figure 5 This is a perspective view of a part of the main body of the electronic keyboard instrument according to the first embodiment, as viewed from the rear side.

[0016] Figure 6 This is a perspective view of the sound emitting member of the electronic keyboard instrument according to the first embodiment as viewed from the rear side.

[0017] Figure 7 is a cross-sectional view of a sound emitting member of an electronic keyboard musical instrument according to a first embodiment, Figure 6 Cross-sectional view of section VII-VII in FIG.

[0018] Figure 8 is a cross-sectional view of a sound emitting member of an electronic keyboard musical instrument according to a first embodiment, Figure 6 Cross-sectional view of section VIII-VIII in FIG.

[0019] Fig. 9 It is a front view of the sound emitting member of the electronic keyboard musical instrument according to the second embodiment.

[0020] Fig. 10A This is a schematic cross-sectional view showing a method for molding the sound emitting member of the electronic keyboard musical instrument according to the first embodiment.

[0021] Fig. 10BIt is a schematic cross-sectional view showing a molding method of the sound emitting member of the electronic keyboard musical instrument according to the second embodiment. DETAILED DESCRIPTION

[0022] (First Embodiment)

[0023] Reference Figures 1 to 8 A first embodiment of the present disclosure will be described. Figure 1 The electronic keyboard instrument (electronic musical instrument) 1 shown in the figure includes a main body 10 and a leg 100. Figure 1 As shown, the main body 10 includes a keyboard (operating member) 20 and a main body shell (frame) 30 that holds the keyboard 20 in a surrounding manner. The keyboard 20 has a plurality of keys 22 consisting of white keys 22W and black keys 22B, and the striking portion is exposed. The leg 100 includes a pair of side plate members 110, a pedal frame 120, and a pedal device 130. In addition, in the following, the arrangement direction of the plurality of keys 22 of the keyboard 20 is set to the left-right 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 ( Figure 1 The near front side of the electronic keyboard instrument is set as the front direction), and the up-down direction of the electronic keyboard instrument 1 is set as the up-down direction ( Figure 1 The upper side of the PCB is set as the upward direction) for explanation.

[0024] like Figure 1 As shown, a pair of side plate members 110 are plate-like members erected on the installation surface on the left and right sides of the electronic keyboard instrument 1 with the two 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 respectively made of wood and have a texture feature. The structure of the main body 10 is described in detail below.

[0025] like Figure 1 to Figure 4 As shown, when viewed from the upper side and the lower side, the main body housing 30 is a roughly rectangular shape that is long in the horizontal direction with the left and right directions as the longitudinal direction, and has a front surface plate 32, a rear surface plate 33, a left side panel 34, a right side panel 35, a front side top plate (second plate-shaped member) 36F, a rear side top plate 36B, and each thick plate-shaped member of the lower surface plate 37, and the longitudinal section is roughly L-shaped (refer to Figure 4 ). In addition, Figure 2 The state where the rear surface plate 33 is removed is shown in FIG. Figure 33 shows a state where the right side panel 35 and the front side top panel 36F are removed. The front surface plate 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 the lower side of the keyboard 20, constituting the front surface of the main body housing 30. A power button 32a is disposed at the right end of the front surface plate 32. The rear surface plate 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, constituting the rear surface of the main body housing 30.

[0026] The left side panel 34 and the right side panel 35 are both roughly rectangular shapes that are long in the front-to-back direction, and a step is provided in the roughly central portion in the front-to-back direction so that the front side is roughly equal in height to 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, and constitute the left side surface and the right side surface of the main body shell 30. The front side top plate 36F is a roughly rectangular shape that is 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, and constitutes a portion of the upper surface of the main body shell 30. The rear side top plate 36B is a roughly rectangular shape that is 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, and constitutes a portion 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 on which a volume knob 24a and the like are arranged is provided between the keyboard 20 and the right side panel 35. Also, a setting panel section 26 on which various setting buttons 26a and the like are arranged is provided between the keyboard 20 and the left side panel 34.

[0027] like Figure 1 to Figure 4 As shown, the rear side top plate 36B is rotatably mounted on the rear surface plate 33 in a manner that the front side is open. 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 (see FIG. 1 ) that are spaced apart in the left-right direction and open upward. Figure 2 ). The upper surface and side surfaces of the cover plate 11 are covered by a saran net. When the rear side top plate 36B is opened, the cover plate 11 covers the lower opening of the rear side top plate 36B, and the interior of the main body case 30 cannot be observed. In addition, a music stand 36F1 is installed in the approximately central part of the front side top plate 36F in the left-right direction. The lower surface plate 37 is a roughly rectangular shape that is long in the left-right direction, is arranged below the main body 10, and constitutes the lower surface of the main body case 30.

[0028] like Figure 3 and Figure 4As shown in FIG. 1 , a substantially rectangular plate-shaped console member 12 that is long in the left-right direction is provided at 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 to cover 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 makes it impossible to see the inside of the main body case 30 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 at the rear side of each key 22, the movement of each key 22 in the front-back direction is restricted.

[0029] like Figure 4 As 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 downwardly with two plate surfaces facing the front-back direction. The lower end of the first sheet metal member 13 is attached to the lower surface plate 37. The rear side of the keyboard 20 is fixed to the main body case 30 through the first sheet metal member 13. The space in front of the first sheet metal member 13 becomes the space provided on the lower side of the keyboard 20. In addition, a plurality of notches are provided at the lower end of the first sheet metal member 13. The space in front of and behind the first sheet metal member 13 inside the main body case 30 is connected through the plurality of first sheet metal members 13 and the notches provided in the first sheet metal member 13.

[0030] like Figure 3 As shown, the portion between the front surface plate 32 of the main body housing 30 and the console member 12 is open to the upper front side, and the upper surface and a part of the front surface of the striking surface portion of each key 22 of the keyboard 20 are exposed to the outside from the opening portion. Figure 3 and Figure 4 As shown, the main body 10 is provided with a key cover 38 that covers the portion of the keyboard 20 that is exposed to the outside. The key cover 38 is a thick plate-like member, and is composed of a front cover portion 38a and a rear cover portion 38b that are plate-like members that are long in the left-right direction and are roughly rectangular in shape 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 front mounting member 14 that is long in the laterally direction. On the portion (handle portion) close to the center of the front mounting member 14, two installation opening portions 14a that are long in the laterally direction and are roughly rectangular in shape and open in a manner that penetrates the front mounting member 14 are respectively provided on both sides in the left-right direction (see Figure 3 and Figure 5 ).

[0031] The rear cover 38b is rotatably connected to the rear link member BL fixed to the main body case 30 via the rear mounting member 15 having a laterally long shape. The front cover 38a and the rear cover 38b are connected in a manner that can be folded twice via a hinge, and are stored in the space on the rear side of the first sheet metal member 13 inside the main body case so as to be freely accessible from the gap between the console member 12 and the operation panel 18 described later. In the electronic keyboard musical instrument 1, when the power is turned off, the key cover 38 is drawn out from the inside of the main body 10, and covers the opening of the main body case 30 where the keyboard 20 is exposed, covering the exposed part of the keyboard 20.

[0032] In the electronic keyboard instrument 1, in a state where 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, in a state where 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 small gap is generated between the lower surface plate 37 and the rear mounting member 15. Therefore, in a state where the key cover 38 is stored, the interior of the main body case 30 is divided into a front side space FS provided on the front side of the key cover 38 and a rear side space BS provided on the rear side of the key cover 38.

[0033] like Figure 3 and Figure 4 As shown, on the front side top plate 36F ( Figure 3 A second sheet metal member 16 extending in the left-right direction is installed on the lower surface of the second sheet metal member 16 (not shown in the figure). An operating panel 18 (first plate-like member) that is long in the left-right direction and is in the shape of a roughly rectangular thick plate is provided at the front end portion of the second sheet metal member 16 so that the two plate surfaces face the front-to-back direction. The operating panel 18 is arranged between the key cover 38 and the front side top plate 36F with gaps on its upper and lower sides that are open to the front side. Most of the space between the key cover 38 and the front side top plate 36F is covered by the operating panel 18, and the rear side space BS cannot be observed. A portion of the front surface of the operating panel 18 is a touch panel, and a plurality of switches (not shown) that accept touch operations are provided. Therefore, the operating panel 18 has a touch operation detection mechanism for performing touch operations and an LED lighting mechanism for irradiating light to the switches.

[0034] A stepped portion 16a is provided on the front side of the second sheet metal member 16. A perforated member 40 in the shape of a roughly rectangular plate that is longer in the left-right direction is screwed and fixedly mounted on the step portion 16a with the two plate surfaces facing the front-to-back direction. The perforated member 40 is made of a resin formed by injection molding, and has a wall portion 42 provided with a plurality of holes (low-inclined holes 44 and high-inclined holes 46 described later) that penetrate in the plate thickness direction. In addition, the perforated member 40 is provided on the rear side of the operating panel 18 on the second sheet metal member 16 in the form of a space slightly spaced apart from the operating panel 18 in the front-to-back direction. As Figure 4As shown in FIG. 1 , the lower side portion of the hole member 40 overlaps with the operation panel 18 in the front-rear direction. The structure of the hole member 40 will be described in detail later.

[0035] like Figure 2 and Figure 4 As shown, the electronic keyboard instrument 1 is provided with two speakers (first sound emitting members) 50R, 50L on the rear side of the upper surface of the lower surface plate 37 in the rear side space BS. The two speakers 50R, 50L are arranged on the lower side and rear side of the keyboard 20 in the form of sound emitting parts 50R1, 50L1 in a substantially truncated cone shape arranged on the upper side of the lower surface plate 37. The sound from each sound emitting part 50R1, 50L1 is emitted to the rear side space BS. One speaker 50R (hereinafter also referred to as "right speaker 50R") is arranged at a position close to the right side of the upper surface of the lower surface plate 37, corresponding to the sound emission of the high range. The other speaker 50L (hereinafter also referred to as "left speaker 50L") is arranged at a position close to the left side of the upper surface of the lower surface plate 37 in the form of being parallel to the right speaker 50R in the left-right direction, corresponding to the sound emission of the low range.

[0036] In the position near the left-right center in the rear side of the upper surface of the lower surface plate 37 between the two speakers 50R, 50L, two reflection members 60 for reflecting the sound emitted from the two speakers 50R, 50L are arranged side by side in the left-right direction. Each reflection member 60 is a roughly thick plate-shaped member configured with two plate surfaces slightly tilted relative to the left-right direction, and is installed by being screwed to the lower surface plate 37 at the lower end. The front surface of each reflection member 60 is a reflection surface (not shown) for reflecting each sound. Since these reflection surfaces are tilted to the right speaker 50R side, at least a part of the sound emitted from the right speaker 50R is reflected by each reflection surface toward the front side and the roughly center side of the left-right direction.

[0037] Tweeters (second sound emitting members) 70R and 70L are respectively provided at positions obliquely above and in front of the speakers 50R and 50L in the rear side space BS. Each tweeter 70R and 70L is substantially cylindrical in shape, with its column axis direction and sound emitting direction facing obliquely above and in front, and is connected to the second sheet metal member 16 via a sub sheet metal 17 (see FIG. Figure 4 and Figure 5 ) is mounted on the second sheet metal member 16. Hereinafter, the high-frequency speaker 70R disposed on the right end side of the rear side space BS will also be referred to as the "right high-frequency speaker 70R", and the high-frequency speaker 70L disposed on the left end side of the right rear side space BS will also be referred to as the "left high-frequency speaker 70L".

[0038] Next, the structure of each component provided in the front side space FS will be described. Figure 4 As shown in FIG. 1 , a first support member 80 is provided on the front side of the first sheet metal member 13 in the front side space FS. The first support member 80 is provided to substantially span the entire area of ​​the lower side of the keyboard 20, and is in a laterally long shape similar to the keyboard 20. The first support member 80 is a hollow member open downward. The keyboard 20 is supported on the main body housing 30 by the first support member 80 and a second support member 88 described later. In addition, the second sheet metal member 16 described above is provided on the rear side of the first support member 80.

[0039] The front end portion of the first supporting member 80 is a convex portion 80a that protrudes upward in a convex shape. 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 upward in a table-like shape. Between the convex portion 80a and the table-shaped portion 80b is a concave portion 80c that is recessed downward in a concave shape. A rotation fulcrum portion 80b1 that rotatably supports the rear end portion of each key 22 of the keyboard 20 is provided on the rear side portion of the upper surface of the table-shaped portion 80b. 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 to emit a sound corresponding to the struck key 22. In the concave portion 80c, a plurality of concave portion openings 80d (refer to Figure 4 ).

[0040] 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 substantially triangular weight portion 84a and an arm portion 84b extending linearly from the weight portion 84a to the front side. The arm portion 84b is rotatably supported by a shaft support material 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 striking feeling close to that of a real piano can be obtained.

[0041] A second support member 88 disposed on the lower surface plate 37 is provided in the space inside the first support member 80 in front of 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 surface plate 37. The keyboard 20 is indirectly supported by the wooden main body case 30 via the first support member 80 by the second support member 88. A shaft support member 86 that supports the arm portion 84b of the hammer member 84 is provided on the second support member 88.

[0042] Next, the perforated member 40 provided on the rear side of the operation panel 18 will be described in detail. Figure 6As shown, the perforated member 40 has a substantially rectangular plate-shaped wall portion 42 that is long in the left-right direction. The wall portion 42 is provided with a plurality of low-inclined holes (first inclined holes) 44 and high-inclined holes (second inclined holes) 46 that are opened in a substantially front-back direction. Here, Figure 7 and Figure 8 FIG. 4 shows a cross section of the low-inclined hole 44 and the high-inclined hole 46 with the left side as the front side. Figure 8 As shown, the low-inclined hole 44 is a hole that opens on the wall portion 42 at an acute angle θ1 relative to the front-rear direction and is inclined upward from the inside of the main body housing 30 toward the outside (front side). Figure 7 As shown, the high inclined hole 46 is a hole provided in the wall portion 42 from the inside toward the outside of the main body case 30 and is inclined upward at an acute angle greater than the angle θ2 formed by the low inclined hole 44 with respect to the front-rear direction (in other words, at a steep angle).

[0043] The perforated member 40 is arranged so that the low-inclined holes 44 and the high-inclined holes 46 face the gap between the operation panel 18 and the front side top plate 36F and are inclined upward. The plurality of low-inclined holes 44 and the high-inclined holes 46 are substantially honeycomb-shaped and are arranged adjacent to each other in a manner staggered in the vertical direction. When observing a cross section cut in the left-right direction, the low-inclined holes 44 and the high-inclined holes 46 arranged at the same height appear spaced apart. In addition, as Figure 7 and Figure 8 As shown, the upper and lower ends of the wall portion 42 are stepped toward the inside and extend outward, and a low-inclined hole 44 and a high-inclined hole 46 are provided on the wall portion 42 between the upper and lower ends.

[0044] like Figure 6 As shown, the wall portion 42 is divided into nine regions R1 to R9 along the left-right direction. The sizes of the regions R1 to R9 are substantially equal. In addition, the region R2 opposite to the right tweeter 70R and the region R8 opposite to the left tweeter 70L are set with a width (left-right direction size) slightly larger than that of the other regions R1, R3 to R7 and R9. Each region R1 to R9 includes a low-inclination region (first inclination region) R2, R4, R6, R8 having a plurality of low-inclination holes 44 and a high-inclination region (second inclination region) R1, R3, R5, R7, R9 having a plurality of high-inclination holes 46. The low-inclination regions R2, R4, R6, R8 and the high-inclination regions R1, R3, R5, R7, R9 are alternately arranged along the left-right direction in the wall portion 42, in other words, they are arranged in a configuration where the low-inclination regions R2, R4, R6, R8 and the high-inclination regions R1, R3, R5, R7, R9 are adjacent to each other. Specifically, both end portions in the left-right direction and the center portion of the wall portion 42 are high-inclination regions R1 , R5 , and R9 , respectively.

[0045] In addition, in the present embodiment, the low-inclination holes 44 of the low-inclination areas R2 and R8 respectively provided on both sides of the left-right center of the wall 42 have a smaller inclination angle to the upper side than the low-inclination areas R4 and R6 respectively provided on both sides of the left-right center of the wall 42, and the high-inclination holes 46 of the high-inclination area R5 provided on the left-right center of the wall 42 have a smaller inclination angle to the upper side than the high-inclination areas R1, R3, R7, and R9 respectively provided on both ends of the left-right center of the wall 42. Specifically, the low-inclination areas R2 and R8 have an inclination angle of 20° with respect to the front-back direction, while the low-inclination areas R4 and R6 have an inclination angle of 26° with respect to the front-back direction, and the high-inclination area R5 has an inclination angle of 36° with respect to the front-back direction, while the high-inclination areas R1, R3, R7, and R9 have an inclination angle of 46° with respect to the front-back direction.

[0046] Screw holes 48 for screwing the hole member 40 to the second sheet metal member 16 are provided at the left and right ends of the wall portion 42 and at the boundary portions of the regions R1 to R7 so ​​as to penetrate the wall portion 42 in the front-rear direction. Then, the hole member 40 is attached to the second sheet metal member 16 in such a manner that the gap between the operation panel 18 and the front side top plate 36F is located on the extension line of the through-through direction of the inclined low-inclined hole 44 and the high-inclined hole 46 (see FIG. Figure 4 ). In addition, the front surface and side surfaces of the wall portion 42 of the porous member 40 are covered by the yarn wheel net, except Figure 2 and Figure 5 Other than that, illustration is omitted.

[0047] Here, refer to Figure 5 The positional relationship between the tweeters 70R and 70L and the perforated member 40 will be described. Figure 5 4 is a perspective view of a portion of the components showing the positional relationship between the right tweeter 70R and the perforated member 40 (the second sheet metal member 16 is omitted). Figure 5 As shown, the right tweeter 70R is arranged at a distance from the perforated member 40 in such a manner as to be opposite to the right end side of the perforated member 40 on the upper side of the keyboard 20 (the left tweeter 70L is also arranged to be opposite to the left end side of the perforated member 40 on the upper side of the keyboard 20). Specifically, the right tweeter 70R is arranged to be opposite to the low-inclined area R2 of the perforated member 40, and the left tweeter 70L is arranged to be opposite to the low-inclined area R2 of the perforated member 40. Each of the tweeters 70R and 70L is inclined upward toward the perforated member side, and its inclination angle (i.e., sound emission angle) is set to 20°, similar to the inclination angle of the low-inclined areas R2 and R8.

[0048] Next, the communication paths P1 to P4 provided inside the main body housing 30 and serving as sound emission paths for the sounds emitted from the speakers 50R and 50L will be described. Figure 4 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 emitting paths for allowing 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 extends from the speakers 50R, 50L through the gap between the lower surface plate 37 and the rear mounting member 15 to the front side space FS, passes through the lower side of each hammer member 84, and passes through the concave 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.

[0049] The second communication path P2, which is 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 the gap between the lower surface plate 37 and the rear mounting member 15, passes through the rear side of the first sheet metal member 13 and passes upward, and reaches the outside of the main body case 30 from the mounting opening 14a. Here, at least a part of the high-range sound emitted from the right speaker 50R and passing through the first communication path P1 and the second communication path P2 is reflected to the gap side between the lower surface plate 37 and the rear mounting member 15 by the reflection surface of each reflection member 60, and reaches the rear side of the first sheet metal member 13. Therefore, a part of the high-range sound emitted from the right speaker 50R efficiently reaches the rear side of the first sheet metal member 13.

[0050] The third communication path P3, which is the third communication path, is a communication path that passes through the rear side space BS upward from each speaker 50R, 50L, passes through the low-inclined hole 44 and the high-inclined hole 46 of the perforated member 40, and reaches the outside of the main body case 30 from the gap between the operation panel 18 and the front side top plate 36F. In addition, since the sound emitted from each tweeter 70R, 70L passes through the low-inclined hole 44 and the high-inclined hole 46 of the perforated 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, which is the fourth communication path, is a communication path that passes through the rear side 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.

[0051] Here, at least a portion of the high-frequency sound emitted from the right speaker 50R and passing through the third communication path P3 and the fourth communication path P4 is reflected to the upper side of the back side space BS by the reflection surface 64a of each reflection member 60. Therefore, a portion of the high-frequency sound emitted from the right speaker 50R efficiently reaches the upper side of the back side space BS. As described above, in the electronic keyboard instrument 1, by having four communication paths P1 to P4 for sound emission, it is possible to effectively emit sound from the inside of the main body case 30 to the player side (the front of the main body case 30 and the substantially center side in the left-right direction), and obtain a good sound image.

[0052] Next, the effect of sound emission through the third communication path P3 will be described in detail. When the sound emitted from each speaker 50R, 50L and through the third communication path P3, and the sound emitted from each tweeter 70R, 70L pass through the low-inclined hole 44 and the high-inclined hole 46 of the perforated member 40, they are guided diagonally upward to the front by the inclination of the low-inclined hole 44 and the high-inclined hole 46. As a result, the sound directed toward the perforated member 40 in the rear side space BS is efficiently propagated through the perforated member 40 to the gap between the operation panel 18 and the front side top plate 36F and reaches the outside of the main body case 30, thereby improving the effect of sound emission to the player side through the third communication path P3.

[0053] In addition, since a plurality of low-inclined regions R2, R4, R6, and R8 and a plurality of high-inclined regions R1, R3, R5, R7, and R9 are alternately provided in the left-right direction in the perforated member 40, by adjusting the inclination angles of the low-inclined holes 44 and the high-inclined holes 46, it is possible to suppress the following situation, that is, the deviation of the volume of the sound emitted to the player side, that is, the front side of the electronic keyboard instrument 1 through the third communication path P3 (the deviation of the volume of the high-range and the volume of the low-range) locally occurs in the entire left-right direction, thereby causing the uniformity of the sound reaching the player to decrease (hereinafter referred to as "the unevenness of the sound"). In this embodiment, by adjusting the inclination angles of the low-inclined holes 44 and the high-inclined holes 46 of each region R1 to R9 individually in the above manner, the sound emitting angle of each region R1 to R9 can be optimized. As a result, the unevenness of the sound emitted to the player side through the third communication path P3 can be greatly suppressed.

[0054] Here, if the inclination angles of the low-inclination holes 44 and the high-inclination holes 46 provided in the hole member 40 are all the same, or if the low-inclination regions R2, R4, R6, R8 and the high-inclination regions R1, R3, R5, R7, R9 are not alternately provided in the left-right direction and there is a bias in the arrangement of the low-inclination holes 44 and the high-inclination holes 46, there is a risk that the sound emitted through the hole member 40 will be too concentrated on the head of the player or too concentrated in directions other than the player. In contrast, in the electronic keyboard instrument 1 of the present embodiment, by adjusting the inclination angles of the low-inclination holes 44 and the high-inclination holes 46 in each region R1 to R9 as described above, even if the gap on the front side of the hole member 40 (the gap between the operation plate 18 and the front side top plate 36F) is narrow as in the present embodiment, the sound emitted through the hole member 40 can be made to have sound diffusion in the up-down direction and the left-right direction. As a result, it is possible to suppress the sound emitted through the hole member 40 from being concentrated in a specific direction.

[0055] As described above, the electronic keyboard musical instrument 1 of this embodiment comprises: a main body shell 30; a keyboard 20, which is arranged in the main body shell 30 and has a plurality of keys 22 arranged in the left-right direction of the main body shell 30; each speaker 50R, 50L and each tweeter 70R, 70L, which are arranged in the main body shell 30; and a perforated member 40, which has a wall portion 42 extending in the left-right direction, a low-inclined hole 44, and a high-inclined hole 46, wherein the low-inclined hole 44 is opened on the wall portion 42 in a manner of forming an acute angle with respect to the front-rear direction and tilting from the inside of the main body shell 30 toward the outside, and the high-inclined hole 46 is opened in a manner of tilting from the inside of the main body shell 30 toward the outside with respect to the front-rear direction. The hole member 40 is opened on the wall portion 42 in a direction inclined from the inside of the main body shell 30 toward the outside at an acute angle larger than the angle of the low-inclination hole 44 relative to the front-to-back direction. The hole member 40 includes a plurality of low-inclination areas R2, R4, R6, R8 having the low-inclination hole 44 and a plurality of high-inclination areas R1, R3, R5, R7, R9 having the high-inclination hole 46. The plurality of low-inclination areas R2, R4, R6, R8 and the plurality of high-inclination areas R1, R3, R5, R7, R9 are arranged along the left-right direction in a configuration in which the low-inclination areas R2, R4, R6, R8 and the high-inclination areas R1, R3, R5, R7, R9 are adjacent to each other.

[0056] In the electronic keyboard instrument 1 of the present embodiment having the above-described structure, the sound that passes through the low-inclined hole 44 and the high-inclined hole 46 of the hole member 40 can be guided to the upper side toward the outside of the main body case 30, that is, the player side, so that the sound emitting effect of the sound that is emitted from each speaker 50R, 50L and each tweeter 70R, 70L and passes through the hole member 40 to the player side can be improved. In addition, by alternately providing the plurality of low-inclined areas R2, R4, R6, R8 and the plurality of high-inclined areas R1, R3, R5, R7, R9 in the left-right direction, the sound emitting angle of the sound that passes through the hole member 40 can be adjusted and optimized in the left-right direction. As a result, the unevenness of the sound that passes through the hole member 40 and is emitted to the player side can be reduced.

[0057] In the electronic keyboard instrument 1 of this embodiment, the low-inclined hole 44 and the high-inclined hole 46 open in a manner inclined toward one of the front and upward direction and the front and downward direction from the inside of the main body case 30. Thus, the low-inclined hole 44 and the high-inclined hole 46 can be given a specific opening direction.

[0058] In addition, in the electronic keyboard instrument 1 of the present embodiment, the low-inclination regions R2, R4, R6, R8 and the high-inclination regions R1, R3, R5, R7, R9 are provided in an odd number in total. Here, the sound that passes through the perforated member 40 and is emitted to the player's side has a greater effect on the concave-convex sense of the sound in the central part in the left-right direction than the effect on the concave-convex sense of the sound at the two end sides in the left-right direction. If the number of each region R1 to R9 provided in the perforated member 40 is an odd number, it is not necessary to configure the boundary of the two regions in the central part in the left-right direction, but to configure a certain region in the central part in the left-right direction. Therefore, the sound emission angle of the sound that passes through the perforated member 40 can be optimized more effectively.

[0059] In addition, in the electronic keyboard instrument 1 of the present embodiment, the hole member 40 includes a high-inclination area R5 in the center portion in the left-right direction. Therefore, while effectively optimizing the sound emission angle of the sound penetrating the hole member 40, the sound is further propagated upward (toward the head side of the performer) in the center portion in the left-right direction, which can improve the performer's audiovisual effect.

[0060] In the electronic keyboard instrument 1 of the present embodiment, the hole member 40 includes a total of nine low-inclination areas R2, R4, R6, R8 and high-inclination areas R1, R3, R5, R7, R9, and the low-inclination holes 44 of the low-inclination areas R4 and R6 respectively provided on both sides of the central part in the left-right direction have a larger inclination angle to the upper side than the low-inclination holes 44 of the low-inclination areas R2 and R8 respectively provided on both ends in the left-right direction. In addition, the high-inclination holes 46 of the high-inclination area R5 provided in the central part in the left-right direction have a smaller inclination angle to the upper side than the high-inclination holes 46 of the high-inclination areas R1 and R9 respectively provided on both ends in the left-right direction. According to this structure, by alternately providing the low-inclination holes 44 and the high-inclination holes 46 in the left-right direction and individually adjusting the inclination angles of the adjacent low-inclination holes 44 and the high-inclination holes 46 in the above manner, the sound emitting angle of each area R1 to R9 can be optimized, and the unevenness of the sound that passes through the hole member 40 and is emitted to the player side can be greatly suppressed.

[0061] In addition, the electronic keyboard instrument 1 of the present embodiment includes: an operation panel 18 extending in the left-right direction and disposed on the upper side of the keyboard 20; and a front side top plate 36F extending in the left-right direction and disposed on the upper side of the operation panel 18 with a gap provided between the operation panel 18, and the perforated member 40 is arranged such that the low-inclined hole 44 and the high-inclined hole 46 face the above-mentioned gap side and are inclined upward. According to this structure, the sound passing through the low-inclined hole 44 and the high-inclined hole 46 of the perforated member 40 can easily reach the outside of the main body case 30, that is, the player side, and the audio-visual effect of the player can be improved.

[0062] Furthermore, in the electronic keyboard instrument 1 of the present embodiment, as sound emitting members, speakers 50R, 50L are provided below and behind the keyboard 20, and tweeters 70R, 70L are provided opposite to both ends in the left-right direction of the hole member 40. According to this structure, while the sound from the speakers 50R, 50L passes through all the low-inclined holes 44 and the high-inclined holes 46 provided in the hole member 40, the sound from the tweeters 70R, 70L passes through the low-inclined holes 44 and the high-inclined holes 46 provided in the left-right direction of the hole member 40. Therefore, due to the synergistic effect of the sound from the speakers 50R, 50L and the sound from the tweeters 70R, 70L, the acoustic effect of the sound that passes through the hole member 40 and reaches the player side can be improved.

[0063] (Second Embodiment)

[0064] Next, refer to Fig. 9 , Fig. 10A and Fig. 10B The second embodiment of the present disclosure is described below. Fig. 9 , Fig. 10A and Fig. 10B As shown, in the electronic keyboard instrument of the second embodiment, the structure and shape of the hole member 240 are different from those of the electronic keyboard instrument 1 of the first embodiment. Since the other structures and effects are the same as those of the first embodiment, their description is simplified or omitted. Fig. 9 , Fig. 10A and Fig. 10B In the second embodiment shown, the same components as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment.

[0065] like Fig. 9 As shown, in the perforated member 240 of the electronic keyboard musical instrument lock of the present embodiment, similarly to the perforated member 40 of the first embodiment, the wall portion 142 is divided into nine regions R10 to R18 along the left-right direction, with the two ends in the left-right direction serving as high-inclination regions R10 and R18, and the low-inclination regions R11, R13, R15, and R17 being alternately arranged with the high-inclination regions R10, R12, R14, R16, and R18 along the left-right direction. In addition, in the perforated member 240, low-inclination holes and high-inclination holes are arranged in two layers in the vertical direction in the wall portion 242 (see also Fig. 10A and Fig. 10B ). Hereinafter, the low-inclination holes and high-inclination holes arranged in the lower layer are referred to as lower-layer low-inclination holes 244L and lower-layer high-inclination holes 246L, and the low-inclination holes and high-inclination holes arranged in the upper layer are referred to as upper-layer low-inclination holes 244U and upper-layer high-inclination holes 246U.

[0066] The lower layer of the perforated member 240 provided in the upper and lower layers is equal to the perforated member 40 of the first embodiment. That is, the shape, size, and inclination angle of each hole of the perforated member 240 are equal to those of the perforated member 40 of the first embodiment, and the two ends and the central part in the left and right directions are respectively the high inclination areas R10, R18, and R14. In addition, the perforated member 240 is configured and sized so that the lower layer part (lower layer low inclination hole 244L, lower layer high inclination hole 246U) is opposite to the operation panel 18 in the front-back direction. Therefore, most of the sound that passes through the opening of the perforated member 240 from the inner side of the main body shell 30 passes through the upper layer low inclination hole 244U, the upper layer high inclination hole 246U, and extends to the outside of the main body shell 30 from the gap between the operation panel 18 and the front side top plate 36F.

[0067] In addition, the lower layer low inclined hole 244L and the lower layer high inclined hole 246U are inclined toward the gap side between the operation panel 18 and the front side top plate 36F, so that it is possible to suppress the following situation that the sound that passes through the opening of the hole member 240 passes through the lower layer low inclined hole 244L and the lower layer high inclined hole 246U and is emitted from the gap between the operation panel 18 and the front side top plate 36F to the outside of the main body case 30. The inclination angle of the lower layer low inclined hole 244L and the lower layer high inclined hole 246U can be a steep angle. In this case, the following structure can be adopted: the sound that passes through the lower layer low inclined hole 244L and the lower layer high inclined hole 246U can be easily emitted from the gap between the operation panel 18 and the front side top plate 36F to the outside of the main body case 30.

[0068] The porous member 240 of this embodiment and a part of the porous member 40 of the first embodiment can be manufactured using a common mold. Fig. 10B As shown, due to the lower layer portion of the porous member 240 (lower layer low inclined hole 244L, lower layer high inclined hole 246L) and Fig. 10A The shape, size, inclination angle, etc. of most of the parts (low-inclined hole 44, high-inclined hole 46) except the upper end of the hole member 40 are equal, and can be manufactured by injection molding using the first cavity Ca1 and the first core Co1 as a common mold. Fig. 10A The upper end of the apertured member 40 shown is similar to the Fig. 10B The upper portion (upper low-inclined hole 244U, upper high-inclined hole 246U) of the porous member 240 shown can be manufactured by injection molding using the second cavity Ca2 and the second core Co2, the third cavity Ca3 and the third core Co3 as respective different molds.

[0069] As described above, the electronic keyboard instrument of this embodiment can obtain the same effect as the electronic keyboard instrument 1 of the first embodiment. That is, the sound passing through the hole member 240 is guided to the player side, and the sound emitting effect to the player side can be improved. In addition, in the hole member 240, the low-inclination areas R11, R13, R15, R17 and the high-inclination areas R10, R12, R14, R16, R18 are alternately arranged in the left-right direction, so that the unevenness of the sound passing through the hole member 240 and emitted to the player side can be reduced.

[0070] Furthermore, as described above, the hole member 240 of the present embodiment and a part of the hole member 40 of the first embodiment can be manufactured using a common mold, so that it is possible to manufacture a plurality of models of different hole members 40, 240 while suppressing the cost of the mold. Therefore, it is possible to manufacture and distribute a plurality of hole members 40, 240 in accordance with the height of the performer, etc., so that the sound passing through the hole members 40, 240 is at the optimal sound emitting angle while suppressing the cost.

[0071] In addition, the embodiments described above are presented as examples and are not intended to limit the scope of the invention. These new embodiments can be implemented in various other ways, and various omissions, substitutions and changes can be made without departing from the scope of the invention. These embodiments and their variations are included in the scope and gist of the invention, and are included in the invention described in the scope of the claim and the scope equivalent thereto.

Claims

1. An electronic musical instrument, wherein: have: Frame; An operating member is disposed on the frame, arranged in the left-right direction of the frame, and extends in the front-back direction of the frame; A sound playing component is arranged in the frame; as well as The hole member comprises a wall portion extending in the left-right direction, a first inclined hole, and a second inclined hole, wherein the first inclined hole is opened on the wall portion in a manner of forming an acute angle with respect to the front-rear direction and being inclined from the inner side of the frame toward the outer side, and the second inclined hole is opened on the wall portion in a manner of being inclined from the inner side of the frame toward the outer side with respect to the front-rear direction at an acute angle greater than the angle of the first inclined hole with respect to the front-rear direction. The perforated member includes a plurality of first inclined areas having the first inclined holes and a plurality of second inclined areas having the second inclined holes, the first inclined areas and the second inclined areas are adjacent to each other, and the plurality of the first inclined areas and the plurality of the second inclined areas are arranged along the left-right direction.

2. The electronic musical instrument according to claim 1, wherein: The first inclined hole and the second inclined hole are opened in a manner inclined toward one of the front and upward direction and the front and downward direction from the inner side of the frame body.

3. The electronic musical instrument according to claim 1, wherein: There are an odd number of the first inclined regions and the second inclined regions in total.

4. The electronic musical instrument according to claim 3, wherein: The perforated member arranges a plurality of the first inclined regions and a plurality of the second inclined regions along the left-right direction such that the second inclined region is disposed at a central portion in the left-right direction.

5. The electronic musical instrument according to claim 4, wherein: The perforated member includes a total of nine first inclined areas and nine second inclined areas, and the first inclined holes of the first inclined areas respectively arranged on both sides of the central part in the left-right direction are inclined relative to the front-to-back direction at an angle greater than the angle of the first inclined holes of the first inclined areas respectively arranged on both end sides in the left-to-right direction.

6. The electronic musical instrument according to claim 4, wherein: The perforated member includes a total of nine first inclined areas and nine second inclined areas, and the second inclined hole of the second inclined area arranged in the central part in the left-right direction is inclined relative to the front-to-back direction at an angle smaller than the angle of the second inclined holes of the second inclined areas respectively arranged at the two end parts in the left-to-right direction relative to the front-to-back direction.

7. The electronic musical instrument according to claim 1, wherein: have: A first plate-shaped member extending in the left-right direction and provided above the operating member; and The second plate-shaped member extends in the left-right direction, is arranged with a gap between the first plate-shaped member and the first plate-shaped member, and is arranged on the upper side of the first plate-shaped member. The perforated member is arranged such that the first inclined hole and the second inclined hole are inclined toward the gap side from the inside of the frame to the outside and upward.

8. The electronic musical instrument according to claim 7, wherein: The perforated member has the first inclined hole and the second inclined hole in two layers in the up-down direction, The first inclined hole and the second inclined hole on the lower layer side are provided to be opposed to the first plate-shaped member in the front-rear direction.

9. The electronic musical instrument according to claim 1, wherein: The sound playing component comprises: A first sound emitting member is provided below and behind the operating member; and The second sound emitting members are respectively provided on the upper side of the operating element and are opposed to both end portions of the perforated member in the left-right direction.

10. An electronic keyboard musical instrument, wherein: An electronic musical instrument according to any one of claims 1 to 9, The operating element is a keyboard having a plurality of keys.

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