Electronic musical instrument and electronic keyboard musical instrument
By setting the inclined reflection surface in electronic instruments and keyboard instruments to reflect sound, the sound uneven problem caused by the speaker installation method is solved, and the sound uniformity and the listener experience of the player are improved.
Patent Information
- Application Number
- CN202410774741.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2023-06-26
- Filing Date
- 2024-06-17
- Publication Date
- 2024-12-27
AI Technical Summary
The speaker installation method in the existing electronic organs causes the sound to be unable to reflect effectively towards the player, reducing the uniformity of the sound.
An electronic musical instrument and a keyboard musical instrument are designed, and the sound playback members on the bass and treble sides are provided in the frame, and the reflection surface is set in an inclined manner through the reflection member, so that the sound can be reflected to improve the uniformity of the sound to reach the player.
Achieve uniform distribution of sound and improve the listener's experience.
Smart Images
Figure CN119207341A_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to electronic musical instruments and electronic keyboard instruments. Background Art
[0002] In the past, there are known electronic musical instruments that can provide a percussion feeling and tone close to that of a real piano. For example, Japanese Patent Publication No. 2003-302974 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 sound according to the keys of the keyboard. In this electronic organ, a reflection plate is provided on the sound emitting side of the speaker, and the sound emitted from the sound emitting surface of the speaker is reflected by the reflection plate, so that the listener can hear the performance sound including the sound of the high-pitched range in a better state. Summary of the invention
[0003] Problem that the invention aims to solve
[0004] Sometimes, it is desired that the sound emitted from the speaker be emitted from the inside of the frame toward the side of the player's head so that the player can obtain a good sound image. However, in the electronic organ disclosed in the above-mentioned Japanese Patent Publication No. 2003-302974, the speaker is installed with the sound emitting surface facing downward, and the sound emitted from the speaker is emitted from the bottom of the organ body to the outside and toward the reflection plate. Therefore, the sound emitted from the speaker and reflected by the reflection plate cannot effectively reach the player, which may reduce the uniformity of the sound reaching the player.
[0005] An object of the present disclosure is to provide an electronic musical instrument and an electronic keyboard musical instrument capable of improving the uniformity of sound reaching a player.
[0006] Means used to solve problems
[0007] The electronic musical instrument disclosed herein comprises: a frame; a plurality of operating members arranged in the frame in the left-right direction of the frame; a sound emitting member, including a bass-side sound emitting member arranged at one side of the left-right direction in the frame and emitting a bass-side sound, and a treble-side sound emitting member arranged at the other side of the left-right direction in the frame and emitting a treble-side sound; and a reflecting member having a reflecting surface for reflecting sound, arranged between the bass-side sound emitting member and the treble-side sound emitting member in the frame, the reflecting member being arranged in a manner in which the reflecting surface is inclined toward the treble-side sound emitting member side relative to the left-right direction.
[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 improving the uniformity of sound reaching 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 It is a perspective view of the main body of the electronic keyboard instrument according to the first embodiment as seen from the front side, and is a perspective view of a state in which a front top plate and a rear top plate are 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 is a perspective sectional view of the main body of the electronic keyboard instrument according to the first embodiment, Figure 4 The sectional view corresponds to the stereoscopic sectional view of the cross section. DETAILED DESCRIPTION
[0016] Embodiments of the present disclosure are described with reference to the drawings. Figure 1 The electronic keyboard instrument (electronic musical instrument) 1 shown in the figure includes a main body 10 and a leg 100. Figure 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.
[0017] like Figure 1As 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.
[0018] 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 36F, a rear side top plate 36B, and a lower surface plate (bottom plate) 37. Each thick plate-like member has a roughly L-shaped longitudinal section (refer to Figure 4 ). In addition, Figure 2 The state where the rear surface plate 33 is removed is shown in FIG. Figure 3 36F and the rear top plate 36B are removed. The front panel 32 is a substantially rectangular shape that is long in the left-right direction and is provided at the lower part of the front end of the main body 10 and below the keyboard 20, constituting the front surface of the main body housing 30. A power button 32a is provided at the right end of the front panel 32 (see Figure 1 The rear surface plate 33 is a substantially rectangular shape that is long in the left-right direction, is disposed at the rear of the main body 10 , and constitutes the rear surface of the main body housing 30 .
[0019] 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.
[0020] like Figure 1 and 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 4 ). 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.
[0021] like Figure 3 and Figure 4 As 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.
[0022] 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.
[0023] like Figure 3As 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 ).
[0024] 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 30 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 portion of the keyboard 20.
[0025] In the electronic keyboard instrument 1, when the keyboard 20 is covered by the key cover 38, the gap between the console member 12 and the operation panel 18 is covered by the rear mounting member 15. In addition, when the power is turned on and the key cover 38 is stored in the space on the rear side of the first sheet metal member 13, a small gap (hereinafter referred to as "communication gap G1" (refer to Figure 5 Therefore, in a state where the key cover 38 is accommodated, the interior of the main body case 30 is divided into a front space FS provided on the front side of the key cover 38 and a rear space BS provided on the rear side of the key cover 38 .
[0026] like Figure 3 and Figure 5 As shown, on the front side top plate 36F ( Figure 3A 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 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-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.
[0027] A perforated member 40 having a substantially rectangular plate shape that is long in the left-right direction is screwed and fixedly mounted on the front side of the second sheet metal member 16 with both plate surfaces facing the front-back direction. The perforated member 40 is made of a resin formed by injection molding and has a plurality of holes that penetrate in the plate thickness direction. The perforated member 40 is provided on the rear side of the operating panel 18 in a manner that is slightly spaced apart from the operating panel 18 in the front-back direction. Figure 4 As shown, the lower side portion of the perforated member 40 overlaps with the operation panel 18 in the front-rear direction.
[0028] like Figure 2 and Figure 3 As shown, the electronic keyboard instrument 1 is provided with two speakers 50R and 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 and 50L are arranged on the lower side and rear side of the keyboard 20 in the form of sound emitting parts 50R1 and 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 and 50L1 is emitted to the rear side space BS. One speaker 50R (hereinafter also referred to as "right speaker (high-pitched sound emitting member) 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-pitched range. The other speaker 50L (hereinafter also referred to as "left speaker (low-pitched sound emitting member) 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-pitched range.
[0029] Two reflection members 60 for mainly reflecting the sound emitted from the right speaker 50R are arranged side by side in the left-right direction between the two speakers 50R and 50L and at a position close to the left-right center of the rear side of the upper surface of the lower surface plate 37. That is, each speaker 50R and 50L is respectively arranged at the two end sides in the left-right direction of the main body shell 30, and each reflection member 60 is arranged at the left-right center side of the main body shell 30. Each reflection member 60 has a thick plate-shaped threaded fixing portion 62 that is screwed to the upper surface of the lower surface plate 37, and a thick plate-shaped rising portion 64 that rises from one end of the threaded fixing portion 62 and is approximately perpendicular to the lower surface plate 37, and is formed of foamed polystyrene, foamed polypropylene, etc.
[0030] Each reflecting member 60 is arranged in a posture that the two plate surfaces of the rising portion 64 are slightly inclined toward the right speaker 50R side relative to the left and right direction. The surface of the rising portion 64 of each reflecting member 60 that faces the front side is a reflecting surface 64a that reflects each sound. That is, each reflecting member 60 is arranged so that the normal direction of the reflecting surface 64a is close to the right speaker 50R. Specifically, each reflecting member 60 is in a posture that the normal direction of the reflecting surface 64a is inclined about 35° toward the right speaker 50R relative to the left and right direction.
[0031] In this embodiment, since the reflection surface 64a is inclined toward the right speaker 50R, at least a portion of the sound emitted from the right speaker 50R is reflected by each reflection surface 64a toward the front side and the substantially center side in the left-right direction. Figure 5 As shown, the front side of the reflection surface 64a is connected to the lower side of the keyboard 20 (the front side space FS) by the communication gap G1. The height dimension H1 of each reflection surface 64a is substantially 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-frequency sound emitted from the right speaker 50R and reflected by each reflection surface 64a can easily pass through the communication gap G1 to reach the lower side of the keyboard 20.
[0032] like Figure 5 As shown, a substantially rectangular yarn wheel net 66 is provided above each reflective member 60 in the rear side space BS. The left-right dimension of the yarn wheel net 66 is substantially equal to the left-right dimension of the rear side space BS, and the front-back dimension is longer than the interval between the key cover 38 and the rear surface plate 33. The yarn wheel net 66 is bent and arranged in a manner to form a convex arc shape at the rear oblique lower side, with the rear end portion fixed to the rear surface plate 33, the front portion bent downward at a substantially right angle, and the front end portion fixed to the lower surface plate 37. The yarn wheel net 66 covers the top of the two speakers 50R, 50L and each reflective member 60, so that the two speakers 50R, 50L and each reflective member 60 cannot be observed from the gap between the operation panel 18 and the front side top plate 36F.
[0033] In addition, if Figure 3 As shown, tweeters 70R and 70L are respectively provided at positions obliquely above the front side of each speaker 50R and 50L in the back side space BS. Each tweeter 70R and 70L is substantially cylindrical, and is installed on the inner surface side of the second sheet metal member 16 in a manner such that the column axis direction and the sound emitting direction are oriented obliquely above the front side. Hereinafter, the tweeter 70R provided on the right end side of the back side space BS is referred to as the "right tweeter 70R", and the tweeter 70L provided on the left end side of the back side space BS is referred to as the "left tweeter 70L". The right tweeter 70R and the left tweeter 70L are provided at intervals between the perforated member 40 in a manner opposite to the right end side and the left end side of the perforated member 40 respectively on the upper side of the keyboard 20. Then, the sound emitted from each tweeter 70R and 70R reaches the perforated member 40 side.
[0034] 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.
[0035] 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 3 ).
[0036] 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.
[0037] In the space inside the first supporting member 80, a second supporting member 88 disposed on the lower surface plate 37 is provided at a portion on the front side of the portion where the hammer member 84 is disposed. The second supporting 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 supporting member 80 by the second supporting member 88. The shaft support member 86 that supports the arm portion 84b of the hammer member 84 is provided on the second supporting member 88.
[0038] 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 to the front side space FS via the communication gap G1, 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.
[0039] 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 communication gap G1, passes through the rear side of the first sheet metal member 13 and passes upward, and reaches the outside of the main body housing 30 from the mounting opening 14a. Here, since the high-frequency sound has a large vibration frequency with respect to air and is easily attenuated compared with the low-frequency sound, the high-frequency sound emitted from the right speaker 50R is difficult to reach the front side of the main body housing compared with the low-frequency sound emitted from the left speaker 50L. In the present embodiment, at least a part of the high-frequency 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 communication gap G1 side by the reflection surface 64a of each reflection member 60 arranged obliquely to the right speaker 50R side, and reaches the rear side of the first sheet metal member 13.
[0040] On the other hand, the low-frequency sound emitted from the left speaker 50L and passing through the first communication path P1 and the second communication path P2 is unlikely to directly reach the reflection surface 64a of each reflection member 60 arranged obliquely toward the right speaker 50R, and does not excessively reach the communication gap G1. Figure 3 As shown, the low-frequency sound emitted from the left speaker 50L does not hit the reflecting surface 64a of each reflecting member 60, but reaches the player located at the center side in the left-right direction near the front of the electronic keyboard instrument 1 through the sound emission path (see the dotted arrow VL). On the other hand, the high-frequency sound emitted from the right speaker 50R reaches the player through both the sound emission path without hitting the reflecting surface 64a and the sound emission path reflected by the reflecting surface 64a of each reflecting member 60 and reaching the player (see the dotted arrow VR).
[0041] In this way, the high-range sound emitted from the right speaker 50R reaches the performer by combining the sound emitting path through the reflection member 64 and the sound emitting path not through the reflection member 64, thereby compensating for the attenuation of the sound. Therefore, the high-range sound and the low-range sound emitted from each speaker 50R, 50L reach the performer in a balanced manner. In addition, as a modified example, the following structure can be adopted, wherein the reflection surface 64a of each reflection member 64 is covered with a rubber material, and a part of the low-range sound emitted from the left speaker 50L is absorbed by the rubber material. In this way, the sound emitted from each speaker 50R, 50L can be emitted in a more balanced manner.
[0042] 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 hole provided in the hole member 40, and reaches the outside of the main body case 30 from the gap between the operation panel 18 and the front side top plate 36F. In addition, since the sound emitted from each tweeter 70R, 70L passes through the hole provided in the hole member 40 and reaches the outside of the main body case 30, it passes through a part of the third communication path P3. The fourth communication path P4, 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.
[0043] In the present embodiment, at least a portion of the high-range sound emitted from the right speaker 50R and passing through the third connecting passage P3 and the fourth connecting passage P4 is reflected to the upper side of the rear side space BS by the reflecting surface 64a of each reflecting member 60. Therefore, a portion of the high-range sound emitted from the right speaker 50R efficiently reaches the upper side of the rear side space BS. On the other hand, the low-range sound emitted from the left speaker 50L and passing through the third connecting passage P3 and the fourth connecting passage P4 does not excessively reach the upper side of the rear side space BS. Therefore, the high-range sound and the low-range sound emitted from each speaker 50R, 50L reach the upper side of the rear side space BS in a balanced manner.
[0044] In addition, since the yarn wheel net 66 has the characteristic of absorbing high-frequency sounds, part of the high-frequency sounds that are mainly emitted from the right speaker 50R and pass through the yarn wheel net 66 to reach the upper part of the back side space BS are absorbed by passing through the yarn wheel net 66. Therefore, the high-frequency sounds that are excessively reflected by the reflection surface 64a of each reflection member 60 are suppressed from excessively reaching the upper part of the back side space BS, and a balanced sound image can be transmitted to the player. 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.
[0045] In addition, since two reflection members 60 are provided at intervals in the left-right direction, the reflection efficiency of the sound emitted from the right speaker 50R and reflected by the reflection surface 64a to the front side is improved. Specifically, for example, among the sounds emitted from the right speaker 50R and directed toward the reflection member 60 side, the sound that is not reflected by the reflection member 64 on the right side (for example, the sound that goes around to the rear side of the reflection member 64 on the right side, etc.) is reflected by the rear surface plate 33 and reaches the reflection member 64 on the left side, and is reflected by the reflection member 64 on the left side and reaches the performer, thereby improving the reflection efficiency of the sound emitted from the right speaker 50R.
[0046] As a modification example of the structure in which two reflection components 60 are arranged on the left and right, for example, the following four modifications can be cited. The first modification example is a structure configured in a form in which the reflection component 64 on the left is in contact with the inner surface of the rear surface plate 33. As a result, the sound that is not reflected by the reflection component 64 on the right can be more reliably reflected to the front side by the reflection component 64 on the left. The second modification example is a structure in which the inclination angles of the reflection surfaces 64a in the two reflection components 64 are different from each other. When the rear side space BS is larger in the front-to-back direction, the inclination angle of the reflection surface 64a of the reflection component 64 on the left is larger (for example, 45°), thereby improving the reflection efficiency of the sound to the performer's side.
[0047] The third modification is a structure in which at least one of the reflection members 60 is arranged in a posture in which the reflection surface 64a is not substantially perpendicular to the lower surface plate 37. In the case where the sound emitted from the right speaker 50R reaches the player side at least via each of the communication paths P1 to P4, the reflection member 60 can be arranged in a posture in which the reflection surface 64a is slightly inclined relative to the lower surface plate 37. The fourth modification is a structure in which the height dimension of the reflection surface 64a of the reflection member 60 on the right is smaller than the height dimension of the reflection surface 64a of the reflection member 60 on the left (but larger than the height dimension of the communication gap G1), and the reflection surface 64a of the reflection member 60 on the left is arranged in a posture in which it is inclined upward. According to this structure, the sound can be more reliably transmitted to the first communication path P1 and the second communication path P2 through the reflection member 60 on the right, and the sound can easily reach the third communication path P3 and the fourth communication path P4 through the reflection member 60 on the left.
[0048] As described above, the electronic keyboard musical instrument 1 of the present 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; speakers 50R, 50L, including a left speaker 50L which is arranged on one side in the left-right direction in the main body shell 30 and emits a sound on the bass side, and a right speaker 50R which is arranged on the other side in the left-right direction in the main body shell 30 and emits a sound on the treble side; and a reflection member 60, which has a reflection surface 64a for reflecting sound, and is arranged between the left speaker 50L and the right speaker 50R in the main body shell 30, and the reflection member 60 is arranged in a manner that the reflection surface 64a is inclined toward the right speaker 50R side relative to the left-right direction.
[0049] In the electronic keyboard instrument 1 of the present embodiment having the above-mentioned structure, the high-range sound emitted from the right speaker 50R is reflected to the player side (the near front side of the main body shell 30 and the approximately central side in the left-right direction) by the reflection surface 64a of each reflection member 60 tilted toward the right speaker 50R side, and efficiently reaches the player side. On the other hand, the low-range sound emitted from the left speaker 50L is difficult to reach the reflection surface 64a of each reflection member 60. Therefore, the volume of the sound reaching the player side (the deviation of the sound in the high-range and the sound in the low-range) can be suppressed from being locally dispersed in the entire left-right direction, thereby improving the uniformity of the sound reaching the player.
[0050] In addition, in the electronic keyboard instrument 1 of the present embodiment, each speaker 50R, 50L is provided on the lower side and the rear side of the keyboard 20. In the electronic keyboard instrument 1, since the position of the player is near the front side of the keyboard 20, according to the above structure, it is possible to provide a specific position for installing each speaker 50R, 50L so that the high-frequency sound reflected by the reflection surface 64a of each reflection member 60 can effectively reach the player side.
[0051] In addition, the electronic keyboard instrument 1 of the present embodiment has a first communication path P1 in the main body case 30, which reaches between the keys of the plurality of keys 22 from the speakers 50R and 50L via the front side of the reflection surface 64a and the bottom side of the keyboard 20. Thus, a specific structure for emitting high-frequency sounds emitted from the right speaker 50R and reflected by the reflection surfaces 64a toward the player side from between the keys of the plurality of keys 22 can be provided, and the uniformity of the sound reaching the player can be further improved.
[0052] In addition, in the electronic keyboard musical instrument 1 of the present embodiment, the main body case 30 has a communication gap G1 that connects the front side of the reflection member 60 and the lower side of the keyboard 20, the first communication path P1 is a communication path through the communication gap G1, and the height dimension H1 of the reflection surface 64a is greater than the height dimension H2 of the communication gap G1. According to this structure, the high-frequency sound emitted from the right speaker 50R and reflected by each reflection surface 64a can easily reach the communication gap G1. Thus, the structure in which the high-frequency sound emitted from the right speaker 50R easily reaches the performer via the first communication path P1 can be realized, and the uniformity of the sound reaching the performer can be further improved.
[0053] In addition, the electronic keyboard instrument 1 of the present embodiment has a second communication path P2 in the main body case 30, which extends from the speakers 50R and 50L to the upper side of the keyboard 20 via the front side of the reflection surfaces 64a. This can provide a specific structure for emitting high-pitched sounds emitted from the right speaker 50R and reflected by the reflection surfaces 64a from the upper side of the keyboard 20 toward the player, and can further improve the uniformity of the sound reaching the player.
[0054] In addition, the electronic keyboard instrument 1 of this embodiment has a third communication path P3 in the main body case 30, which reaches the upper side of the keyboard 20 via the upper side of each reflecting surface 64a from each speaker 50R, 50L. Thus, another specific structure for emitting high-pitched sound emitted from the right speaker 50R and reflected by each reflecting surface 64a from the upper side of the keyboard 20 toward the player side can be provided, and the uniformity of the sound reaching the player can be further improved.
[0055] In addition, the electronic keyboard instrument 1 of the present embodiment has a fourth communication path P4 in the main body case 30, which extends from the speakers 50R and 50L via the upper side of the reflection surfaces 64a to the upper side of the main body case 30. Thus, a specific structure for emitting high-frequency sound emitted from the right speaker 50R and reflected by the reflection surfaces 64a from the upper side of the main body case 30 toward the player can be provided, and the uniformity of the sound reaching the player can be further improved.
[0056] In addition, the electronic keyboard instrument 1 of the present embodiment includes a yarn wheel net 66 covering the upper side of each speaker 50R, 50L in the main body case 30. According to this structure, a part of the high-frequency sound among the sounds emitted from each speaker 50R, 50L and reaching the upper side of the rear side space BS through the yarn wheel net 66 is absorbed by passing through the yarn wheel net 66. Therefore, the high-frequency sound reflected by the reflection surface 64a of each reflection member 60 is suppressed from excessively reaching the upper side of the main body case 30, and the uniformity of the sound reaching the player can be further improved.
[0057] In addition, in the electronic keyboard instrument 1 of the present embodiment, the left speaker 50L is arranged on the left side in the left-right direction in the main body shell 30, and the right speaker 50R is arranged on the right side in the left-right direction in the main body shell 30. In detail, the left speaker 50L and the right speaker 50R are respectively arranged on the two end sides in the left-right direction in the main body shell 30, and each reflection member 60 is arranged on the central side in the left-right direction in the main body shell 30. In addition, each reflection member 60 is arranged so that the normal direction of the reflection surface 64a forms an angle of 35° with respect to the left-right direction. According to this structure, since the performer is usually located on the central side in the left-right direction of the near front side of the electronic keyboard instrument 1, the sound emitted from the right speaker 50R and reflected by the reflection member 60 can be efficiently transmitted to the performer side.
[0058] 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; A plurality of operating members are arranged on the frame and arranged in a left-right direction of the frame; a sound emitting member including a low-pitched sound emitting member disposed on one side of the left-right direction in the frame body and emitting a low-pitched sound, and a high-pitched sound emitting member disposed on the other side of the left-right direction in the frame body and emitting a high-pitched sound; and a reflecting member having a reflecting surface for reflecting sound, and arranged between the bass-side sound emitting member and the treble-side sound emitting member in the frame; The reflection member is provided so that the reflection surface is inclined toward the high-sound-side sound emitting member with respect to the left-right direction.
2. The electronic musical instrument according to claim 1, wherein: The sound emitting member is provided below and behind the operating element.
3. The electronic musical instrument according to claim 2, wherein: The housing includes a first communication path extending from the sound emitting member through a front side of the reflecting surface and a lower side of the operating element to a space between the plurality of operating elements.
4. The electronic musical instrument according to claim 3, wherein: The frame has a gap connecting the front side of the reflection member and the lower side of the operation element. The first communication path is a communication path passing through the gap, The height dimension of the reflecting surface is greater than the height dimension of the gap.
5. The electronic musical instrument according to claim 2, wherein: The housing includes a second communication path extending from the sound emitting member to an upper side of the operating element via a front side of the reflecting surface.
6. The electronic musical instrument according to claim 2, wherein: The housing includes a third communication path extending from the sound emitting member to an upper side of the operating element via an upper side of the reflecting surface.
7. The electronic musical instrument according to claim 2, wherein: The frame body includes a fourth communication path extending from the sound emitting member to an upper side of the frame body via an upper side of the reflecting surface.
8. The electronic musical instrument according to claim 1, wherein: The frame body includes a wheel net covering upper sides of the sound emitting member and the reflecting member.
9. The electronic musical instrument according to claim 1, wherein: The bass-side sound emitting member is arranged on the left side in the left-right direction in the frame, The high-sound-side sound emitting member is disposed in the frame on the right side in the left-right direction.
10. The electronic musical instrument according to claim 9, wherein: The low-pitched sound emitting member and the high-pitched sound emitting member are respectively arranged at both ends of the frame in the left-right direction. The reflection member is provided in the frame at the center side in the left-right direction.
11. The electronic musical instrument according to claim 1, wherein: The reflection member is disposed so that the normal direction of the reflection surface is closer to the high-sound-side sound emitting member than to the front direction of the frame.
12. The electronic musical instrument according to claim 11, wherein: The reflecting member is arranged so that an angle between a normal direction of the reflecting surface and the left-right direction is in a range of 30° to 40°.
13. The electronic musical instrument according to claim 1, wherein: The reflective member is arranged such that the reflective surface is substantially perpendicular to the bottom plate of the frame.
14. An electronic keyboard musical instrument, wherein: An electronic musical instrument according to any one of claims 1 to 13, The operating element is a keyboard having a plurality of keys.