Electronic musical instrument and electronic keyboard musical instrument

Abstract

To provide an electronic musical instrument and an electronic keyboard musical instrument that can improve the feeling of uniformity of sounds that reach a player.SOLUTION: An electronic keyboard musical instrument comprises: a body case 30; a keyboard 20 that is provided in the body case 30 and has a plurality of keys 22 arranged in the left-and-right direction of the body case 30; speakers 50R, 50L that include a left speaker 50L provided at one end in the left-and-right direction in the body case 30 and emitting low note sounds, and a right speaker 50R provided at the other end in the left-and-right direction in the body case 30 and emitting high note sounds; and reflecting members 60 that each have a reflecting plate 64a reflecting sounds and are provided between the left speaker 50L and the right speaker 50R in the body case 30. The reflecting members 60 are each provided such that the reflecting plate 64a is inclined toward the right speaker 50R with respect to the left-and-right direction.SELECTED DRAWING: Figure 3

Description

[Technical field]

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

[0002] Conventionally, electronic musical instruments that provide a keystroke sensation and tone similar to that of a real piano have been known. For example, Patent Document 1 discloses an electronic organ (electronic musical instrument) that includes an organ body, a keyboard, and a speaker housed in the organ body, and generates electronic sounds in response to key depressions on the keyboard. In this electronic organ, a reflector is provided on the sound-emitting side of the speaker, and the reflector reflects the sound emitted from the sound-emitting surface of the speaker, allowing the listener to hear better performance sounds, including high-pitched sounds. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2003-302974 A Summary of the Invention [Problem to be solved by the invention]

[0004] There are cases where it is desirable to have the sound emitted from the speaker projected from inside the housing toward the head of the performer, thereby enabling the performer to obtain a good sound image. However, in the electronic organ disclosed in the above Patent Document 1, the speaker is mounted with its sound-emitting surface facing downward, and the sound emitted from the speaker is emitted from below the organ body to the outside and directed toward the reflector, so that the sound emitted from the speaker and reflected by the reflector cannot be delivered effectively toward the performer, and there is a risk that the uniformity of the sound delivered to the performer will be reduced.

[0005] An object of the present invention is to provide an electronic musical instrument and an electronic keyboard instrument that can improve the sense of uniformity of the sound that reaches the player. [Means for solving the problem]

[0006] The electronic musical instrument of the present invention comprises a housing, a plurality of controls provided in the housing and arranged in the left-right direction of the housing, sound emitting members including a bass-side sound emitting member provided on one side of the left-right direction within the housing and emitting bass sounds, and a treble-side sound emitting member provided on the other side of the left-right direction within the housing and emitting treble sounds, and a reflective member having a reflective surface that reflects sound and provided between the bass-side sound emitting member and the treble-side sound emitting member within the housing, the reflective surface of the reflective member being inclined towards the treble-side sound emitting member in the left-right direction.

[0007] An electronic keyboard instrument of the present invention includes the electronic instrument described above, and the operator is a keyboard having a plurality of keys. Effect of the Invention

[0008] According to the present invention, it is possible to provide an electronic musical instrument and an electronic keyboard instrument that can improve the sense of uniformity of the sound that reaches the player. [Brief description of the drawings]

[0009] [Figure 1] 1 is an overall perspective view of an electronic keyboard instrument according to a first embodiment, as viewed from the front side; [Diagram 2] 1 is a perspective view of a main body of an electronic keyboard instrument according to a first embodiment, seen from the rear side. [Diagram 3] FIG. 1 is a perspective view of a main body of an electronic keyboard instrument according to a first embodiment, seen from the front side, with a front top panel and a rear top panel removed. [Figure 4] 4 is a cross-sectional view of the main body of the electronic keyboard instrument according to the first embodiment, taken along line IV-IV in FIG. 2. FIG. [Diagram 5] FIG. 5 is a perspective cross-sectional view of a main body of the electronic keyboard instrument according to the first embodiment, the perspective cross-sectional view being a cross-section corresponding to the cross-sectional view of FIG. 4. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] An embodiment of the present invention will be described with reference to the drawings. An electronic keyboard instrument (electronic 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 the keying portion exposed, and a main body case (housing) 30 that surrounds and holds the keyboard 20. The leg 100 includes a pair of side plate members 110, a pedal frame 120, and a pedal device 130. In the following description, the arrangement direction of the plurality of keys 22 of the keyboard 20 is the left-right direction (the left side of FIG. 1 is the left direction), the extension direction of each key 22 is the front-rear direction (the front side of FIG. 1 is the front direction), and the up-down direction of the electronic keyboard instrument 1 is the up-down direction (the upper side of FIG. 1 is the up direction).

[0011] As shown in FIG. 1, the 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 both plate surfaces facing the left and right directions, 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 the approximate 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 exposed to the outside and each side plate member 110 of the leg 100 are each made of wood, giving them a distinctive texture. The configuration of the main body 10 will be described in detail below.

[0012] As shown in Figs. 1 to 4, the main body case 30 has a horizontally elongated, generally rectangular shape with the left-right direction as viewed from above and below, and includes thick plate-like members, such as 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 section (see Fig. 4). Fig. 2 shows a state in which the rear panel 33 has been removed, and Fig. 3 shows a state in which the front top panel 36F and the rear top panel 36B have been removed. The front panel 32 has a generally rectangular shape that is long in the left-right direction, and is provided at the lower part of the front end of the main body 10 and below the keyboard 20 to form the front surface of the main body case 30. A power button 32a is provided at the right end of the front panel 32 (see Fig. 1). The rear panel 33 has a generally rectangular shape that is long in the left-right direction, and is provided at the rear of the main body 10 to form the rear surface of the main body case 30.

[0013] The left side panel 34 and the right side panel 35 are both substantially rectangular in shape and elongated in the front-rear direction, and a step is provided in the substantially central portion in the front-rear direction so that the front side is at substantially the same height as the keyboard 20. The left side panel 34 and the right side panel 35 are provided on the left and right sides of the main body 10, respectively, and constitute the left and right sides of the main body case 30. The front top panel 36F is substantially rectangular in shape and elongated in the left-right direction, and is provided on the front side of the upper rear part of the main body 10, and constitutes a part of the upper surface of the main body case 30. The rear top panel 36B is substantially rectangular in shape and elongated in the left-right direction, and is provided on the rear side of the upper rear part of the main body 10, and constitutes a part of the upper surface of the main body case 30. As shown in FIG. 1 and FIG. 3, 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. In addition, 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.

[0014] As shown in Figs. 1 and 4, the rear top panel 36B is attached to the rear panel 33 so as to be rotatable so that the front side opens. A cover plate 11, which is substantially rectangular and elongated in the left-right direction, is provided on the lower side of the rear top panel 36B with both plate surfaces facing the up-down direction. The cover plate 11 is provided with a plurality of substantially rectangular upper openings 11a that open upward at intervals in the left-right direction (see Fig. 4). The upper and side surfaces of the cover plate 11 are covered with a saran net. When the rear top panel 36B is in an open state, the openings on the lower side of the rear top panel 36B are covered by the cover plate 11 so that the inside of the main body case 30 cannot be seen. In addition, a music stand 36F1 is attached to the front top panel 36F at substantially the center in the left-right direction. The lower panel 37 is substantially rectangular and elongated in the left-right direction, and is provided below the main body part 10 to form the lower surface of the main body case 30.

[0015] As shown in Figures 3 and 4, a console member 12 in the form of 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 cover the rear ends of each key 22 of the keyboard 20 at a position where it overlaps with the front end of the front top plate 36F in the up-down direction. The console member 12 prevents the inside 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. In addition, the provision of the console member 12 behind each key 22 restricts the movement of each key 22 in the front-rear direction.

[0016] As shown in FIG. 4, a plurality of first sheet metal members 13, each of which is substantially plate-shaped and extends downward with both plate surfaces facing the front-rear direction, are provided at intervals along the left-right direction at the rear end of the lower surface of the console member 12. The lower end of the first sheet metal member 13 is attached to a lower plate 37. The rear side of the keyboard 20 is fixed to the main body case 30 by the first sheet metal member 13. The space in front of the first sheet metal member 13 is a space provided below the keyboard 20. The lower end of the first sheet metal member 13 is provided with a plurality of notches (not shown). The spaces in front of and behind the first sheet metal member 13 inside the main body case 30 are communicated between the plurality of first sheet metal members 13 and by the notches provided in the first sheet metal member 13.

[0017] As shown in FIG. 3, the main body case 30 has an opening at the front upper side between the front panel 32 and the console member 12, and a part of the upper surface and the front surface, which are the striking surfaces of each key 22 of the keyboard 20, are exposed to the outside from this opening. As shown in FIG. 3 and FIG. 4, the main body 10 is provided with a key cover 38 that covers the part of the keyboard 20 that is exposed to the outside. The key cover 38 is a thick plate-like member, and is configured with a front cover part 38a and a rear cover part 38b, which are plate-like members having a substantially rectangular shape elongated in the left-right direction, arranged in parallel from front to back. The front cover part 38a is rotatably connected to the front link member FL fixed to the main body case 30 via the front attachment member 14 having a horizontally elongated shape. Two horizontally elongated substantially rectangular attachment openings 14a that open so as to penetrate the front attachment member 14 are provided on both sides in the left-right direction in a portion (handle portion) near the center of the front attachment member 14 (see FIG. 3).

[0018] 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 attachment member 15. The front cover portion 38a and the rear cover portion 38b are connected in a bifold manner 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). When the power is turned off in the electronic keyboard instrument 1, the key cover 38 is pulled out from inside the main body portion 10 to cover the opening of the main body case 30 through which the keyboard 20 is exposed, and the exposed portion of the keyboard 20 is 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 (hereinafter referred to as a "communication gap G1" (see FIG. 5)) is generated between the lower panel 37 and the rear attachment member 15. Therefore, when the key cover 38 is stored, the inside of the main body case 30 is divided into a front space FS provided in front of the key cover 38 and a rear space BS provided behind the key cover 38.

[0020] As shown in FIG. 3 and FIG. 5, a second sheet metal member 16 extending in the left-right direction is attached to the lower surface of the front side top plate 36F (not shown in FIG. 3). An operation plate 18 having a substantially rectangular thick plate shape elongated in the left-right direction is provided at the front end of the second sheet metal member 16 with both plate surfaces facing the front-rear direction. The operation plate 18 is provided between the key cover 38 and the front side top plate 36F with gaps opening to the front side on both the top and bottom sides. The operation plate 18 covers most of the space between the key cover 38 and the front side top plate 36F so that the rear side space BS is not visible. A part of the front surface of the operation plate 18 is a touch panel, and a plurality of switches (not shown) that accept touch operations are provided. For this reason, the operation plate 18 has 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 side of the second sheet metal member 16 by screws with both plate surfaces facing the front-rear direction. The perforated member 40 is made of resin formed by injection molding, and has a plurality of holes penetrating in the plate thickness direction. The perforated member 40 is provided on 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. 4, a lower portion of the perforated member 40 overlaps with the operation plate 18 in the front-rear direction.

[0022] As shown in Fig. 2 and Fig. 3, the electronic keyboard instrument 1 is provided with two speakers 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 behind the keyboard 20, with the sound emitting parts 50R1, 50L1 having a substantially truncated cone shape disposed above the lower panel 37. Sound from each sound emitting part 50R1, 50L1 is emitted into the rear space BS. One speaker 50R (hereinafter also referred to as the "right speaker (treble sound emitting member) 50R") is provided at a position toward the right side of the upper surface of the lower panel 37, and corresponds to the emission of high-pitched sounds. The other speaker 50L (hereinafter also referred to as the "left speaker (low-pitched sound-emitting member) 50L") is arranged in parallel with the right speaker 50R in the left-right direction, toward the left side of the upper surface of the lower panel 37, and is capable of emitting low-pitched sound.

[0023] Between the two speakers 50R, 50L and at a position on the rear side of the upper surface of the lower panel 37 near the center in the left-right direction, two reflection members 60 that mainly reflect the sound emitted from the right speaker 50R are provided in parallel in the left-right direction. That is, each speaker 50R, 50L is provided at both ends in the left-right direction in the main body case 30, and each reflection member 60 is provided at the center in the left-right direction in the main body case 30. Each reflection member 60 has a thick plate-shaped screw-fastened portion 62 attached by screws to the upper surface of the lower panel 37, and a thick plate-shaped rising portion 64 that rises approximately perpendicularly to the lower panel 37 from one end of the screw-fastened portion 62, and is made of polystyrene foam, foamed polypropylene, or the like.

[0024] Each reflecting member 60 is disposed such that both plate surfaces of the rising portion 64 are slightly inclined toward the right speaker 50R in the left-right direction. The surface of the rising portion 64 of each reflecting member 60 facing forward serves as a reflecting surface 64a that reflects sound. That is, each reflecting member 60 is disposed such that the normal direction of the reflecting surface 64a faces toward the right speaker 50R. Specifically, each reflecting member 60 is disposed such that the normal direction of the reflecting surface 64a is inclined toward the right speaker 50R by about 35° in the left-right direction.

[0025] In this embodiment, since the reflection surface 64a is inclined toward the right speaker 50R, at least a part of the sound emitted from the right speaker 50R is reflected by each reflection surface 64a toward the front side and toward the approximately center side in the left-right direction. Also, as shown in FIG. 5, the front side of the reflection surface 64a and the lower side of the keyboard 20 (the front space FS) are communicated with each other through a communication gap G1. The height dimension H1 of each reflection surface 64a is approximately equal to the height dimension of each speaker 50R, 50L, and is larger than the height dimension H2 of the communication gap G1. Therefore, the high-pitched sound emitted from the right speaker 50R and reflected by each reflection surface 64a is easily able to reach the lower side of the keyboard 20 through the communication gap G1.

[0026] As shown in FIG. 5, a substantially rectangular saran net 66 is provided above each reflecting member 60 in the rear space BS. The saran net 66 has a left-right dimension substantially equal to the left-right dimension of the rear space BS, and a front-rear dimension longer than the distance between the key cover 38 and the rear plate 33. The saran net 66 is curved and disposed so as to have a convex arc shape obliquely downward toward the rear, with its rear end fixed to the rear plate 33 and its front end fixed to the lower plate 37 with its front portion bent downward at a substantially right angle. The saran net 66 covers the upper sides of both speakers 50R, 50L and each reflecting member 60, so that both speakers 50R, 50L and each reflecting member 60 are not visible through a gap between the operation panel 18 and the front top plate 36F, etc.

[0027] As shown in FIG. 3, tweeters 70R and 70L are provided at positions diagonally above the front side of the speakers 50R and 50L in the rear space BS. Each tweeter 70R and 70L is substantially cylindrical, and is attached to the inner surface of the second sheet metal member 16 with its column axis direction and sound emission direction facing diagonally above the front side. Hereinafter, the tweeter 70R provided at the right end of the rear space BS is also referred to as the "right tweeter 70R," and the tweeter 70L provided at the left end of the rear space BS is also referred to as the "left tweeter 70L." The right tweeter 70R and the left tweeter 70L are provided above the keyboard 20 with a gap between them and the perforated member 40 so as to face the right end and the left end of the perforated member 40, respectively. The sound emitted from each tweeter 70R and 70R reaches the perforated member 40.

[0028] Next, the configuration of each member provided in the front space FS will be described. As shown in Fig. 4, a first 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 over 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 by 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.

[0029] The front end of the first support member 80 is 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 is a platform portion 80b that protrudes upward. Between the convex portion 80a and the platform portion 80b is a concave portion 80c that is concave downward. A pivot point portion 80b1 that rotatably supports the rear end portion of each key 22 of the keyboard 20 is provided at the rear portion of the upper surface of the platform portion 80b. In addition, a control board 85 is provided on the upper surface of the platform portion 80b. The control board 85 is provided with a switch so that a sound corresponding to the pressed key 22 is generated. The concave portion 80c is provided with a plurality of concave portion openings 80d that open in the front-rear and up-down directions and are arranged in the left-right direction (see FIG. 3).

[0030] A plurality of hammer members 84 are provided below the base portion 80b in the space inside the first support member 80, and are connected to the respective keys 22. The hammer members 84 each include 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 member 86 provided on the front portion of the inside of the base portion 80b. When each key 22 is struck, the weight portion 84a of the hammer members 84 rises, and weight can be applied to each key 22 when it is struck. This provides a striking sensation similar to that of a real piano.

[0031] A second support member 88 arranged 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 member 84 is arranged. The second support member 88 is a hollow member that opens downward, and is attached to the main body 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 body case 30, which is made of wood. A pivot member 86 that supports the arm portion 84b of the hammer member 84 is provided on the second support member 88.

[0032] Next, the communication paths P1 to P4 provided inside the main body case 30 and serving as sound emission paths for sounds emitted from the speakers 50R and 50L will be described. As shown in Fig. 4, in the electronic keyboard instrument 1 of this embodiment, four communication paths P1 to P4 are provided inside the main body case 30 as sound emission paths for sounds emitted from the speakers 50R and 50L to the outside of the main body case 30. The first communication path P1 is a communication path that extends from each speaker 50R or 50L to the front space FS via the communication gap G1, passes below each hammer member 84, exits from the recessed portion opening 80d to the upper side of the first support member 80, and reaches the outside of the main body case 30 from between each key 22.

[0033] The second communication path P2 is a communication path that extends from each speaker 50R, 50L through the communication gap G1 to the rear side of the first sheet metal member 13, passes through the rear side of the first sheet metal member 13, and exits upward, and reaches the outside of the main body case 30 through the mounting opening 14a. Since high-pitched sounds have a higher vibration frequency into the air and are more likely to attenuate than low-pitched sounds, the high-pitched sounds emitted from the right speaker 50R are less likely to reach the front side of the main body case than the low-pitched sounds emitted from the left speaker 50L. In this embodiment, at least a part of the high-pitched sounds emitted from the right speaker 50R and passing through the first communication path P1 and the second communication path P2 is reflected to the communication gap G1 side by the reflecting surfaces 64a of the reflecting members 60 arranged with an inclination toward the right speaker 50R, and reaches the rear side of the first sheet metal member 13.

[0034] On the other hand, the low-pitched sound emitted from the left speaker 50L and passing through the first and second communication paths P1 and P2 is unlikely to reach the reflecting surfaces 64a of the reflecting members 60 arranged at an angle toward the right speaker 50R directly, and does not reach the communication gap G1 excessively. That is, as shown in Fig. 3, the low-pitched sound emitted from the left speaker 50L passes through a sound emission path that reaches the player arranged at the center in the left-right direction in front of the electronic keyboard instrument 1 without hitting the reflecting surfaces 64a of the reflecting members 60 (see dashed arrow VL). On the other hand, the high-pitched sound emitted from the right speaker 50R passes through both a sound emission path that reaches the player without hitting the reflecting surfaces 64a, and a sound emission path that is reflected by the reflecting surfaces 64a of the reflecting members 60 and reaches the player (see dashed arrow VR).

[0035] In this way, the high-pitched sound emitted from the right speaker 50R reaches the performer through a combination of a sound emission path that passes through the reflecting member 64 and a sound emission path that does not pass through the reflecting member 64, so that the attenuation of the sound is compensated for. Therefore, the high-pitched sound and the low-pitched sound emitted from each speaker 50R, 50L reach the performer in a balanced manner. As a modified example, the reflecting surface 64a of each reflecting member 64 may be covered with a rubber material, so that a part of the low-pitched sound emitted from the left speaker 50L is absorbed by the rubber material. This allows the sounds emitted from each speaker 50R, 50L to be emitted in a more balanced manner.

[0036] The third communication path P3 is a communication path that passes from each speaker 50R, 50L upward through the rear space BS, passes through holes provided in the perforated member 40, and reaches the outside of the main body case 30 through a gap between the operation panel 18 and the front top plate 36F. The sound emitted from each tweeter 70R, 70L passes through a hole provided in the perforated member 40 and reaches the outside of the main body case 30, so it passes through a part of the third communication path P3. The fourth communication path P4 is a communication path that passes from each speaker 50R, 50L upward through the rear space BS, and reaches the outside of the main body case 30 through the upper opening 11a of the cover plate 11.

[0037] In this embodiment, at least a part of the high-pitched sound emitted from the right speaker 50R and passing through the third and fourth communication passages P3 and P4 is reflected to the upper side of the rear space BS by the reflecting surface 64a of each reflecting member 60. Therefore, a part of the high-pitched sound emitted from the right speaker 50R efficiently reaches the upper side of the rear space BS. On the other hand, the low-pitched sound emitted from the left speaker 50L and passing through the third and fourth communication passages P3 and P4 does not reach the upper side of the rear space BS excessively. Therefore, the high-pitched sound and the low-pitched sound emitted from each speaker 50R, 50L reach the upper side of the rear space BS in a well-balanced manner.

[0038] In addition, since the saran net 66 has a characteristic of absorbing high-pitched sounds, a part of the high-pitched sounds emitted mainly from the right speaker 50R and reaching the upper part of the rear space BS through the saran net 66 is absorbed by passing through the saran net 66. Therefore, high-pitched sounds reflected excessively by the reflecting surfaces 64a of the reflecting members 60 are prevented from reaching the upper part of the rear space BS excessively, and a well-balanced sound image can be conveyed to the performer. As described above, the electronic keyboard instrument 1 has four communication paths P1 to P4 for sound emission, so that sound is effectively emitted from inside the main body case 30 to the performer side (the front side of the main body case 30 and approximately the center side in the left-right direction), and a good sound image can be obtained.

[0039] In addition, since two reflecting members 60 are provided at an interval in the left-right direction, the reflection efficiency of the sound emitted from the right speaker 50R and reflected forward by the reflecting surface 64a is increased. Specifically, for example, among the sounds emitted from the right speaker 50R toward the reflecting member 60, the sounds that are not reflected by the right reflecting member 64 (for example, the sounds that go around to the rear side of the right reflecting member 64) are reflected by the rear panel 33 and reach the left reflecting member 64, and are reflected by the left reflecting member 64 to reach the performer, thereby increasing the reflection efficiency of the sound emitted from the right speaker 50R.

[0040] As modifications of the configuration in which two reflecting members 60 are provided on the left and right sides in this manner, the following four modifications can be cited, for example. In the first modification, the left reflecting member 64 is disposed in contact with the inner surface of the rear panel 33. This allows sounds that are not reflected by the right reflecting member 64 to be more reliably reflected forward by the left reflecting member 64. In the second modification, the inclination angles of the reflecting surfaces 64a of the two reflecting members 64 are different from each other. When the rear space BS is larger in the front-to-rear direction, the efficiency of reflecting sound toward the performer can be increased by making the inclination angle of the reflecting surface 64a of the left reflecting member 64 larger (for example, 45°).

[0041] In the third modified example, at least one of the reflecting members 60 is provided with the reflecting surface 64a in a position that is not substantially perpendicular to the lower plate 37. In the case where the sound emitted from the right speaker 50R reaches the performer side via at least each of the communication paths P1 to P4, the reflecting members 60 may be provided with the reflecting surface 64a in a position that is slightly inclined with respect to the lower plate 37. In the fourth modified example, the reflecting surface 64a of the right reflecting member 60 is smaller in height than the reflecting surface 64a of the left reflecting member 60 (but is larger than the height of the communication gap G1), and the reflecting surface 64a of the left reflecting member 60 is provided in a position that is inclined upward. With this configuration, the right reflecting member 60 can more reliably transmit the sound to the first communication path P1 and the second communication path P2, and the left reflecting member 60 can more easily transmit the sound to the third communication path P3 and the fourth communication path P4.

[0042] As described above, the electronic keyboard instrument 1 of this embodiment comprises a main body case 30, a keyboard 20 provided within the main body case 30 and having a plurality of keys 22 arranged in the left-right direction of the main body case 30, speakers 50R, 50L including a left speaker 50L provided on one side of the main body case 30 in the left-right direction and emitting low-pitched sounds, and a right speaker 50R provided on the other side of the main body case 30 in the left-right direction and emitting high-pitched sounds, and a reflective member 60 having a reflective surface 64a that reflects sound and provided between the left speaker 50L and the right speaker 50R within the main body case 30, with the reflective surface 64a inclined towards the right speaker 50R in the left-right direction.

[0043] In the electronic keyboard instrument 1 of the present embodiment configured as described above, the high-pitched sound emitted from the right speaker 50R is reflected toward the player (the front side of the main body case 30 and the approximately center side in the left-right direction) by the reflecting surface 64a of each reflecting member 60 arranged at an angle toward the right speaker 50R, and is efficiently delivered to the player. On the other hand, the low-pitched sound emitted from the left speaker 50L is difficult to reach the reflecting surface 64a of each reflecting member 60. Therefore, the volume of the sound delivered to the player (the variation between the high-pitched sound and the low-pitched sound) is suppressed from being locally scattered in the left-right direction, and the uniformity of the sound delivered to the player can be improved.

[0044] Moreover, in the electronic keyboard instrument 1 according to this embodiment, the speakers 50R, 50L are provided below and behind the keyboard 20. Since the position of the performer in the electronic keyboard instrument 1 is in front of the keyboard 20, the above configuration makes it possible to provide specific positions for the speakers 50R, 50L so that the high-pitched sounds reflected by the reflective surfaces 64a of the reflective members 60 can be effectively delivered to the performer.

[0045] Furthermore, the electronic keyboard instrument 1 according to this embodiment has, within the main body case 30, a first communication passage P1 that runs from each of the speakers 50R, 50L through the front side of each of the reflecting surfaces 64a and the lower side of the keyboard 20 to each space between the multiple keys 22. This provides a specific configuration for emitting high-pitched sounds emitted from the right speaker 50R and reflected by each of the reflecting surfaces 64a from each space between the multiple keys 22 toward the player, thereby further improving the sense of uniformity of the sounds that reach the player.

[0046] In the electronic keyboard instrument 1 according to this embodiment, the main body case 30 has a communication gap G1 that communicates between the front side of the reflecting member 60 and the lower side of the keyboard 20, the first communication passage P1 is a communication passage that passes through the communication gap G1, and the reflection surface 64a has a height dimension H1 that is greater than the height dimension H2 of the communication gap G1. This configuration makes it easier for high-pitched sounds emitted from the right speaker 50R and reflected by each reflection surface 64a to reach the communication gap G1. This makes it easier for high-pitched sounds emitted from the right speaker 50R to reach the player via the first communication passage P1, and further improves the uniformity of the sound that reaches the player.

[0047] Furthermore, the electronic keyboard instrument 1 according to this embodiment has a second communication passage P2 inside the main body case 30, which runs from each speaker 50R, 50L to the upper side of the keyboard 20 via the front side of each reflecting surface 64a. This provides a specific configuration for emitting high-pitched sounds emitted from the right speaker 50R and reflected by each reflecting surface 64a from the upper side of the keyboard 20 toward the player, thereby improving the uniformity of the sound reaching the player.

[0048] Furthermore, the electronic keyboard instrument 1 according to this embodiment has a third communication passage P3 inside the main body case 30, which runs from each of the speakers 50R, 50L to the upper side of the keyboard 20 via the upper side of each of the reflecting surfaces 64a. This provides another specific configuration for emitting high-pitched sounds emitted from the right speaker 50R and reflected by each of the reflecting surfaces 64a from the upper side of the keyboard 20 toward the player, thereby further improving the uniformity of the sound reaching the player.

[0049] Furthermore, the electronic keyboard instrument 1 according to this embodiment has a fourth communication passage P4 inside the main body case 30, which runs from each speaker 50R, 50L through the upper side of each reflecting surface 64a to the upper side of the main body case 30. This provides a specific configuration for emitting high-pitched sounds emitted from the right speaker 50R and reflected by each reflecting surface 64a from the upper side of the main body case 30 toward the player, thereby further improving the uniformity of the sound reaching the player.

[0050] Moreover, the electronic keyboard instrument 1 according to this embodiment includes a saran net 66 that covers the upper side of each speaker 50R, 50L within the main body case 30. With this configuration, among the sounds emitted from each speaker 50R, 50L and reaching the upper part of the rear space BS through the saran net 66, some of the high-pitched sounds are absorbed by passing through the saran net 66. Therefore, the high-pitched sounds reflected by the reflecting surfaces 64a of each reflecting member 60 are prevented from reaching the upper side of the main body case 30 excessively, and the sense of uniformity of the sounds reaching the performer can be further improved.

[0051] In the electronic keyboard instrument 1 according to this embodiment, the left speaker 50L is provided on the left side in the left-right direction in the main body case 30, and the right speaker 50R is provided on the right side in the left-right direction in the main body case 30. In detail, the left speaker 50L and the right speaker 50R are provided on both ends in the left-right direction in the main body case 30, respectively, and each reflecting member 60 is provided on the center side in the left-right direction in the main body case 30. Furthermore, each reflecting member 60 is provided so that the normal direction of the reflecting surface 64a forms an angle of 35° with respect to the left-right direction. According to this configuration, since the player is usually positioned on the left-right center side in front of the electronic keyboard instrument 1, the sound emitted from the right speaker 50R and reflected by the reflecting member 60 can be efficiently transmitted to the player side.

[0052] The above-described embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented 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 in the scope and gist of the invention, and are included in the scope of the invention and its equivalents described in the claims. [Explanation of symbols]

[0053] 1 Electronic keyboard instrument 10 Main unit 11 Cover plate 11a Upper opening 12 console member 13 first sheet metal member 14 Front mounting member 14a Mounting opening 15 Rear mounting member 16 Second sheet metal part 18 Operation panel 20 Keyboard 22 keys 22B black key 22W White keys 24 Power panel 24a Volume knob 26 Volume panel section 26a Setting button 30 Main unit case 32 Front Panel 32a Power Button 33 Rear plate 34 Left side plate 35 Right side plate 36B Rear side top plate 36F Front top 36F1 Music stand 37 Bottom plate 38 Key cover 38a Front cover part 38b Rear cover part 40 Perforated part 50L Left speaker 50L1 Sound output section 50R Right speaker 50R1 Sound emitting part 60 Reflection member 62 Screw-fastening portion 64 Rising portion 64a Reflective surface 66 Saran net 70L Left tweeter 70R Right tweeter 80 First support member 80a Convex portion 80b Platform part 80b1 Rotation fulcrum part 80c Recessed part 80d Recessed part opening 84 Hammer part 84a Weight part 84b Arm section 85 Control board 86 Axial support member 88 Second support member 100 Leg portion 110 Side plate member 120 Pedal frame 130 Pedal device BL Rear link member BS Rear space FL Front link member FS Front space P1 1st communication passage P2 2nd communication passage P3 3rd communication passage P4 4th communication passage

Claims

1. A housing and A plurality of operators provided on the housing and arranged in a left-right direction of the housing; 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; a reflective member having a reflective surface that reflects sound and provided between the low-pitched sound-emitting member and the high-pitched sound-emitting member within the housing; The reflection member is provided such that the reflection surface is inclined toward the treble sound emitting member with respect to the left-right direction. Electronic musical instrument.

2. The sound emitting member is provided below and rearward of the operation element.

2. The electronic musical instrument according to claim 1.

3. a first communication passage extending from the sound emitting member to between the plurality of operators via a front side of the reflecting surface and a lower side of the operator in the housing; 3. The electronic musical instrument according to claim 2.

4. the housing has a gap communicating between a front side of the reflecting member and a lower side of the operating element, the first communication passage is a communication passage passing through the gap, The height dimension of the reflecting surface is greater than the height dimension of the gap.

4. The electronic musical instrument according to claim 3.

5. a second communication passage extending from the sound emitting member to an upper side of the operation element via a front side of the reflection surface in the housing; 3. The electronic musical instrument according to claim 2.

6. a third communication passage extending from the sound emitting member to an upper side of the operation element via an upper side of the reflection surface in the housing; 3. The electronic musical instrument according to claim 2.

7. a fourth communication passage extending from the sound emitting member to an upper side of the housing via an upper side of the reflecting surface in the housing; 3. The electronic musical instrument according to claim 2.

8. A saran net is provided within the housing to cover an upper side of the sound emitting member and the reflecting member.

2. The electronic musical instrument according to claim 1.

9. The bass sound-emitting member is provided on the left side in the left-right direction within the housing, The treble sound emitting member is provided on the right side in the left-right direction within the housing.

2. The electronic musical instrument according to claim 1.

10. the low-pitched sound-emitting member and the treble-pitched sound-emitting member are provided at both ends in the left-right direction within the housing, The reflection member is provided on a central side in the left-right direction within the housing.

10. The electronic musical instrument according to claim 9.

11. The reflection member is provided such that a normal direction of the reflection surface faces toward the treble sound emitting member.

2. The electronic musical instrument according to claim 1.

12. The reflecting member is provided so that the normal direction of the reflecting surface forms an angle within a range of 30° to 40° with respect to the left-right direction.

12. The electronic musical instrument according to claim 11.

13. The reflecting member is provided so that the reflecting surface is substantially perpendicular to the bottom plate of the housing.

2. The electronic musical instrument according to claim 1.

14. An electronic musical instrument comprising: The operator is a keyboard having a plurality of keys. Electronic keyboard instrument.

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