JP6548001B2 - Keyboard instrument - Google Patents

Description

  The present invention relates to keyboard instruments such as pianos and organs.

  For example, in a keyboard instrument such as a piano, as described in Patent Document 1, a keyboard unit is provided in the instrument case, and a keyboard lid that covers the keyboard unit so as to be openable and closable is rotatably provided on the instrument case It has been known that the keyboard lid is turned to stand on the upper front plate of the musical instrument case to open the keyboard portion, and in this state, the keyboard portion is depressed to play.

JP 2005-283955 A

  In this case, the keyboard lid is provided with a music stand for putting up the music, and a top plate is provided above the musical instrument case located above the music placed against the music stand. An opening and closing plate is rotatably provided on the top plate in the vertical direction, and a mirror surface is provided on the lower surface of the opening and closing plate.

  In such a keyboard instrument, when playing by pressing the keyboard portion, the keyboard lid is placed on the upper front plate of the instrument case, the music sheet is placed on the music stand of the keyboard lid, and in this state the top plate is opened and closed. When the board is rotated to open the upper part of the musical instrument case, the keyboard portion is reflected on the mirror surface portion provided on the opening and closing plate, and it is possible to play while looking at the keyboard portion reflected on the mirror surface of the opening and closing plate. Is configured as.

  However, in such a keyboard instrument, since the mirror surface portion of the opening and closing plate is disposed above the music stand, the keyboard portion is reflected on the mirror surface portion of the opening and closing plate. There is also a problem that a musical score placed on a music stand is also reflected on the mirror surface, and the keyboard portion reflected on the mirror surface of the opening and closing plate is not easy to see.

  In addition, in such a keyboard instrument, the music stand is located below the opening and closing plate, so if the height of the music is low, the keyboard portion reflected on the mirror surface of the opening and closing plate is separated. Since the angle of movement of the player's line of sight is large, there is a problem that the performance is interrupted when the beginner plays.

  The problem to be solved by the present invention is to provide a keyboard musical instrument capable of favorably viewing the keyboard without looking directly at the keyboard without being influenced by the music stand and the music.

One embodiment of the present invention is a keyboard unit, a music stand, an instrument case provided with the keyboard unit in the inside , and a position where the music unit appears to be reflected and reflected from the player. And a mirror disposed at a position closer to the keyboard section than the keyboard section , the mirror being attached to the instrument case so as to be able to stand upright and fall over in the front-rear direction of the instrument case by a first hinge section It is a keyboard instrument characterized by being

  According to this invention, the mirror is not influenced by the music stand and the music, and the mirror can be reflected so that the keyboard can be seen well by the player. Can be viewed well.

FIG. 1 is a front view showing a first embodiment in which the present invention is applied to an electronic keyboard instrument. It is an expanded sectional view in the AA arrow of the electronic keyboard instrument shown by FIG. FIG. 3 is an enlarged cross-sectional view showing an essential part of a portion where a mirror plate in an electronic keyboard instrument shown in FIG. 2 is attached to a top plate by a hinge portion. It is an expanded sectional view showing a 2nd embodiment which applied this invention to an electronic keyboard instrument. FIG. 5 is an enlarged cross-sectional view of an essential part showing a state in which a sound emitting cover is rotated with respect to a mirror plate of the electronic keyboard instrument shown in FIG. 4; FIG. 5 is a plan view showing the electronic keyboard instrument shown in FIG. 4 in which the keyboard portion is covered with a keyboard lid and the sound output hole is closed with a mirror plate.

First Embodiment
Hereinafter, a first embodiment in which the present invention is applied to an electronic keyboard instrument will be described with reference to FIGS. 1 to 3.
This electronic keyboard instrument includes an instrument case 1 as shown in FIG. 1 and FIG. The musical instrument case 1 is formed in a substantially box-like shape with an open front upper portion (upper left portion in FIG. 2).

  That is, as shown in FIGS. 1 and 2, the musical instrument case 1 includes a bottom plate 2, a front plate 3 erected at the front end (the left end in FIG. 2) of the bottom plate 2, and the bottom plate 2. A rear plate 4 erected at the rear end (the right end in FIG. 2) and a pair of side plates erected on the left and right sides (bottom in FIG. 2) of the bottom plate 2 And a top plate 6 disposed on the rear upper portion of the pair of side plates 5 and the upper portion of the rear plate 4.

  In this case, as shown in FIGS. 1 and 2, the front plate 3 is formed to have a height approximately half that of the rear plate 4. Further, the front end portions of the pair of side plates 5 are formed slightly higher than the front plate 3, and the rear side from the substantially middle portion in the front-rear direction (left and right direction in FIG. 2) is formed at the same height as the rear plate 4 It is formed in the inclination part which inclines from the part toward the middle part to the rear upwards. As a result, the musical instrument case 1 is formed in a substantially box shape having a horizontally long open front side corresponding to each inclined portion of the pair of side plates 5 opened upward.

  In the musical instrument case 1, as shown in FIG. 2, a keyboard unit 7 is provided. The keyboard 7 comprises a keyboard chassis 8 disposed on the bottom plate 2 of the instrument case 1 and a plurality of keys 9 arranged in parallel on the keyboard chassis 8 so as to be vertically rotatable. There is. The keyboard 7 is configured to be depressed in a state in which the plurality of keys 9 are exposed upward from the front side of the musical instrument case 1.

  Further, as shown in FIG. 2, the speaker 10 is disposed downward in the instrument case 1 with the speaker 10 positioned behind the keyboard 7. The speaker 10 is configured to generate musical tones having a pitch corresponding to each key 9 when the keys 9 of the keyboard unit 7 are depressed. In this case, the bottom plate 2 of the musical instrument case 1 is provided with a sound emission hole 2 a for emitting the sound of the speaker 10 toward the lower side of the musical instrument case 1. In the instrument case 1, a console panel 12 is provided to be inclined from the upper side located at the rear of the keyboard 7 toward the lower side of the front of the top 6.

  On the other hand, in the instrument case 1, as shown in FIG. 2, a keyboard lid 13 which covers the upper side of the keyboard 7 is provided so as to be openable and closable by a lid guide 14. The keyboard lid 13 has a front lid 15 and a rear lid 16, and the front lid 15 and the rear lid 16 are foldably connected by a hinge 17. Thus, the keyboard lid 13 is configured to be stored in the musical instrument case 1 by bending the front lid 15 and the rear lid 16 at the hinges 17 when the keyboard portion 7 is opened upward.

  In this case, at the front end of the front lid 15, as shown in FIG. 2, guide shafts 15a respectively projecting toward the inner surfaces of the pair of side plates 5 are provided via the support legs 15b. Further, at the front end portion of the rear lid 16, guide shafts 16a respectively projecting toward the inner surfaces of the pair of side plates 5 are provided via support legs 16b. At a rear end portion of the rear lid 16, a shaft mounting plate 16c described later is attached.

  As shown in FIG. 2, when the keyboard lid 13 covers the upper side of the keyboard 7, the lid guide 14 arranges the front lid 15 and the rear lid 16 in a substantially flat plate shape, and the keyboard lid 13 is the keyboard The front cover 15 and the rear cover 16 are bent with the hinges 17 when the 7 is opened upward, and the bent rear cover 16 is arranged between the rear of the keyboard 7 and the speaker 10 .

  That is, as shown in FIG. 2, the lid guide portion 14 has a guide rail portion 18 and a guide member 19. The guide rail portion 18 obliquely extends upward from the upper side of the front plate 3 to the inner surface of the pair of side plates 5 and passes the upper side of the console panel 12 to a position corresponding to the lower side of the middle portion in the front and rear direction of the top plate 6. It is installed at an incline. The guide rail portion 18 is configured to guide the guide shaft 15 a of the front lid 15 and the guide shaft 16 a of the rear lid 16 in the front-rear direction.

  Thereby, as shown in FIG. 2, when the front cover 15 and the rear cover 16 cover the upper side of the keyboard 7, the guide rail unit 18 tilts the front cover 15 and the rear cover 16 downward in the forward direction. It is configured to be arranged in a flat plate shape in a folded state. In this case, when the front cover 15 and the rear cover 16 cover the upper side of the keyboard 7, the concave portion 18a for restricting the position of the guide shaft 16a of the rear cover 16 is provided substantially in the middle of the guide rail 18. ing.

  As shown in FIG. 2, the guide member 19 is rotatably attached to the support shaft 20 provided on the inner surface of the side plate 5 at a position near the upper portion of the rear end portion of the keyboard 7. The arm portion 21 and a connecting shaft 22 rotatably connecting the end portion of the arm portion 21 and the shaft mounting plate 16c of the rear lid 16 are provided. In this case, a guide shaft 23 is provided at an intermediate portion of the arm portion 21. A pinion gear 24 is rotatably attached to the guide shaft 23.

  That is, as shown in FIG. 2, the guide shaft 23 of the arm portion 21 is guided while drawing a circular arc in the vertical direction along the guide groove 26 of the guide plate 25 provided on the inner surface of the pair of side plates 5. It is configured. The guide groove 26 is provided on the guide plate 25 in a semicircular arc shape centered on the support shaft 20.

  Further, as shown in FIG. 2, the pinion gear 24 of the guide shaft 23 is configured to draw an arc in the vertical direction and move while meshing with the guide gear 27 of the guide plate 25 and rotating. Similar to the guide shaft 23, the guide gear 27 is also provided on the guide plate 25 in a semicircular arc shape centered on the support shaft 20.

  Thus, when the front cover 15 and the rear cover 16 of the keyboard cover 13 cover the upper side of the keyboard 7 and close the cover guide unit 14, the guide shaft 15 a of the front cover 15 is used as the front end of the guide rail unit 18. The guide shaft 16a of the rear lid 16 is positioned in the recess 18a of the guide rail portion 18, and the connecting shaft 22 positioned at the rear end of the rear lid 16 is guided by the arm portion 21 of the guide member 19 The front lid 15 and the rear lid 16 are configured to be arranged in a flat plate in a state of being inclined forward and downward by positioning the front lid 15 and the rear lid 16 at substantially the same height.

  In this case, in the lid guide portion 14, as shown in FIG. 2, the arm portion 21 rotates counterclockwise around the support shaft 20 and stands up, and at the same time, the guide shaft 23 is a guide groove 26 of the guide plate 25. By moving from the lower side to the upper side while the pinion gear 24 meshes with the guide gear 27 of the guide plate 25 and moves from the lower side to the upper side. It is configured to push up the connecting shaft 22 of.

  Further, as shown in FIG. 2, when the keyboard lid 13 is opened and the keyboard 7 is opened upward, as shown in FIG. 2, the guide shaft 15 a of the front lid 15 is located above the console panel 12, that is, the top plate. The front plate 15 is located on the lower side of the top plate 6 by positioning the guide shaft 16a of the rear cover 16 at the rear end of the guide rail portion 18 by positioning the guide rail portion 18 at the lower end of the front end of , And the rear cover 16 is bent at a hinge 17 with respect to the front cover 15, and the connecting shaft 22 located at the rear end of the rear cover 16 is pulled down by the arm portion 21 of the guide member 19, Are arranged between the rear of the keyboard 7 and the speaker 10.

  In this case, as shown in FIG. 2, in the lid guide portion 14, the arm portion 21 rotates clockwise about the support shaft 20 and hangs down, and at the same time, the guide shaft 23 enters the guide groove 26 of the guide plate 25. By moving along from the upper side to the lower side, the pinion gear 24 meshes with the guide gear 27 of the guide plate 25 and moves from the upper side to the lower side while rotating, The connecting shaft 22 is configured to be pulled down.

  By the way, on the top board 6 located in the upper part of the musical instrument case 1, the music stand 28 is attached by the attachment member 32, as shown to FIG. 1 and FIG. Further, a mirror plate 30 is attached by a hinge portion 31 on the top plate 6 positioned on the front side (left side in FIG. 2) of the music stand 28. The music stand 28 includes a music stand portion 28a which is provided standing upright on the top 6 of the musical instrument case 1 in a state of being inclined backward, and a music reception portion 28b provided in the music stand portion 28a. Have.

  In this case, as shown in FIGS. 1 and 2, the music score receiving portion 28b is provided so as to be positioned at almost the same height as the upper portion of the mirror plate 30 when the mirror plate 30 is inclined and stands up. There is. Thus, when the music stand 28 is placed on the music score receiving portion 28 b located substantially at the same height as the upper portion of the mirror surface plate 30 and stood on the music score standing portion 28 a, the music surface 29 is the upper portion of the mirror surface plate 30. It is arranged at a higher position than this so that the musical score 29 can be seen by the player without being blocked by the mirror plate 30.

  On the other hand, as shown in FIGS. 1 to 3, the mirror surface plate 30 includes a movable plate 30a and a mirror surface portion 30b provided on the front surface (left side in FIG. 3) of the movable plate 30a. The mirror plate 30 is attached to the upper end of the front end of the top plate 6 where the lower end of the movable plate 30a approaches the keyboard 7 by a plurality of hinges 31 so as to be able to rise and fall in the front-rear direction. As a result, when the movable plate 30a rotates around the plurality of hinges 31 and stands up in a state in which the movable plate 30a is inclined forward on the top plate 6, the keyboard portion 7 is reflected on the mirror portion 30b. The keyboard unit 7 reflected on the mirror surface unit 30b is configured to be seen by the player.

  In this case, as shown in FIG. 3, the plurality of hinges 31 are torque hinges that hold the mirror plate 30 at an arbitrary angle with respect to the top plate 6, and in the key arrangement direction of the keyboard 7. It is provided at multiple locations on the same axis. That is, the hinge portion 31 includes the mirror surface fixing plate 31 a fixed to the movable plate 30 a of the mirror surface plate 30, the top plate fixing portion 31 b fixed to the top surface of the top plate 6, the mirror surface fixing portion 31 a and the top plate fixing portion A connecting shaft portion 31c rotatably connects both of the connecting shaft portion 31b and the connecting shaft portion 31c in a state where a predetermined load is applied to the moving shaft 31b by a friction force, a spring force or the like.

  For this reason, as shown in FIGS. 2 and 3, in the hinge portion 31, a predetermined load is applied to the mirror surface fixing portion 31a and the top plate fixing portion 31b by the connecting shaft portion 31c. The mirror plate 30 is configured to be held in an inclined state at an arbitrary angle with respect to 6.

  Thereby, as shown in FIG. 2 and FIG. 3, when the mirror plate 30 is erected and turned over with respect to the top plate 6, the hinge portion 31 holds the mirror plate 30 in an inclined state at an arbitrary angle. The keyboard portion 7 is reflected on the mirror surface portion 30b of 30. The keyboard portion 7 thus projected is configured to be inclined to an angle easily viewable to the player, whereby the inclination angle of the mirror surface plate 30 is adjusted.

Next, the operation of such an electronic keyboard instrument will be described.
When playing with this electronic keyboard instrument, first, the keyboard lid 13 is housed in the instrument case 1. At this time, the front end portion of the front lid 15 of the keyboard lid 13 is lifted and pushed backward. Then, the front lid 15 is guided by the guide rail portion 18 of the lid guide portion 14 and moves toward the rear side of the musical instrument case 1.

  At the same time, the rear end portion of the rear lid 16 is guided by the guide member 19 of the lid guide portion 14 and disposed between the keyboard portion 7 and the speaker 10 while the rear lid 16 is bent about the hinge 17. As a result, the keyboard lid 13 is housed in the instrument case 1 and the keyboard unit 7 is exposed to the upper front of the instrument case 1. At this time, the console panel 12 located on the rear upper side of the keyboard 7 is exposed toward the front side of the instrument case 1.

  Then, the music piece 29 is placed on the music stand 28 and the mirror plate 30 is rotated and tilted to a predetermined angle. At this time, the mirror plate 30 is rotated about the plurality of hinges 31 to adjust the inclination angle of the mirror plate 30. That is, when the inclination angle of the mirror plate 30 is adjusted, the keyboard unit 7 is reflected on the mirror surface 30b of the mirror plate 30, and the mirror plate 30 is set to an angle that is easy for the player to see. Cant. Thus, when the inclination angle of the mirror plate 30 is adjusted, the mirror plate 30 is held by the plurality of hinge portions 31 at the adjusted inclination angle.

  In this state, when the performer performs the key depression operation of each key 9 of the keyboard section 7 while watching the music score 29, the player does not look directly at the keyboard section 7, and the mirror surface section 30b of the mirror plate 30. It is possible to play while watching the keyboard section 7 reflected in. At this time, since the mirror surface plate 30 is disposed close to the lower side of the music surface 29, the angle range of the line of sight of the player when the player looks at the keyboard 7 and the music surface 29 reflected on the mirror surface 30 And the movement of the player's line of sight can be kept small, which makes it possible to play well.

  That is, the player does not have to look directly at the keyboard 7 while playing, and can look at the keyboard 7 reflected on the mirror surface 30b of the mirror plate 30 when looking at the music score 29, The movement is small, and the keyboard 7 and the musical score 29 reflected on the mirror surface portion 30b of the mirror surface plate 30 can be viewed almost simultaneously, so that the beginner can play well without interrupting the performance.

  In this case, even if the mirror surface plate 30 is disposed on the front side of the music stand 28, the music score receiving portion 28b of the music stand 28 is positioned on the upper side of the mirror surface plate 30, The musical score 29 is disposed on the upper side of the mirror plate 30. For this reason, since the musical score 29 is not obstructed by the mirror plate 30, the player can view the musical score 29 well, and this also enables good performance.

  Thus, according to this electronic keyboard instrument, the keyboard 7, the music stand 28, and the position at which the player looks reflected from the player 7 are closer than the keyboard 7 to the music stand 28. By providing the mirror surface plate 30 disposed at the position, the mirror surface plate 30 is not affected by the music stand 28 and the music surface 29, and the keyboard portion 7 is well viewed from the player by the mirror surface plate 30. Since the image can be displayed as it is, the keyboard 7 can be visually recognized well without looking at the keyboard 7 directly.

  That is, in this electronic keyboard instrument, since the mirror plate 30 is provided on the top plate 6 located on the top of the musical instrument case 1 located on the front side of the music stand 28, the mirror plate 30 corresponds to the music stand 28 and the music score 29. Since the keyboard 7 can be displayed on the mirror plate 30 so as to look well from the player without being affected, the keyboard 7 can be favorably viewed without directly looking at the keyboard 7. As a result, the player can perform a good performance while pressing the keyboard 7 accurately and the novice can perform well without interrupting the performance.

  In this case, the mirror surface plate 30 is rotatably mounted in the vertical direction on the top plate 6 positioned above the musical instrument case 1 by the hinge portion 31, so that the mirror surface plate 30 can be arbitrarily selected with respect to the top plate 6. It can be inclined at an angle, which allows the keyboard 7 to be easily and satisfactorily displayed on the mirror plate 30 as viewed by the player. In this case, the hinge portion 31 is a torque hinge and can hold the mirror plate 30 at an arbitrary angle with respect to the top plate 6, so that it is convenient and convenient.

  That is, the hinge portion 31 includes the mirror surface fixing plate 31 a fixed to the movable plate 30 a of the mirror surface plate 30, the top plate fixing portion 31 b fixed to the top surface of the top plate 6, the mirror surface fixing portion 31 a and the top plate fixing portion The mirror plate 30 is inclined at an arbitrary angle with respect to the top plate 6 because the connecting shaft portion 31 c rotatably connects both of them in a state where a predetermined load is applied to 31 b. It can be reliably and well held in the state.

  Further, in this electronic keyboard instrument, the music stand 28 a is provided on the top board 6 positioned at the upper part of the musical instrument case 1 so as to be erected in a state of being inclined backwards; The music score receiving portion 28b provided in the standing portion 28a, and the music score receiving portion 28b is provided at approximately the same height as the height of the inclined upper portion of the mirror plate 30. When the music piece 29 is placed on the music score receiving portion 28b and stood on the music score standing portion 28a, the music piece 29 is not blocked by the mirror plate 30, and the player can see the music piece 29 surely and favorably.

  Furthermore, in this electronic keyboard instrument, the keyboard lid 13 that covers the keyboard unit 7 so as to be able to open and close the keyboard unit 7 is foldably accommodated in the instrument case 1, so that the keyboard lid 13 is housed in the instrument case 1 when playing. As a result, the keyboard 7 and the mirror plate 30 can be brought close to each other, and the keyboard cover 13 can prevent the mirror plate 30 from being affected, thereby reliably securing the keyboard 7 to the mirror plate 30. And it can be projected well.

  In this case, the keyboard lid 13 has a front lid 15 and a rear lid 16, and the front lid 15 and the rear lid 16 are foldably connected by a hinge 17, and when the keyboard 7 is opened upward, The lid 15 and the back lid 16 are bent at the hinge 17 while being guided by the lid guide portion 14 and stored in the instrument case 1, so that the keyboard lid 13 can be opened and closed easily and smoothly. 13 can be compactly stored in the musical instrument case 1, whereby the mirror plate 30 can be prevented from being affected by the keyboard lid 13.

Second Embodiment
Next, a second embodiment in which the present invention is applied to an electronic keyboard instrument will be described with reference to FIGS. The same parts as those of the first embodiment shown in FIGS. 1 to 3 are described with the same reference numerals.
In the electronic keyboard instrument, as shown in FIGS. 4 to 6, the top plate 35 and the mirror plate 36 are different in configuration from the first embodiment, and the other configuration is substantially the same as the first embodiment. .

  The top plate 35 is provided on the lower side top plate 37 provided on the inner upper end portion of the pair of side plates 5 and the rear side plate 4 as shown in FIG. 4 and FIG. And an upper top plate 38. The lower top plate 37 has a length in the front-rear direction (the left-right direction in FIG. 4) substantially the same as the length from the middle to the rear plate 4 in the front-rear direction of the pair of side plates 5. The length in the arrangement direction (the direction in the front and back of the sheet in FIG. 4) is formed to be substantially the same as the length of the keyboard 7 in the key arrangement direction.

  Further, as shown in FIGS. 4 and 5, the upper top plate 38 has a length in the front-rear direction (the left-right direction in FIG. 4) shorter than the length in the front-rear direction of the lower top plate 37. The length in the key arrangement direction of the portion 7 is formed to be slightly longer than the length in the key arrangement direction of the lower top plate 37. Thereby, the upper end plate 38 is disposed with its rear end portion at the upper end portion of the back plate 4 and both end portions in the key arrangement direction at the upper end portion on the rear side (right side in FIG. 4) of the pair of side plates 5 In this state, the front end portion is positioned approximately at the middle of the lower top plate 37 in the front-rear direction, and the front side of the lower top plate 37 is exposed upward.

  As shown in FIGS. 4 and 6, a music stand 28 is attached to the front end (the left end in FIG. 4) of the upper top plate 38 by a mounting member 32 in a state of being inclined rearward. As in the first embodiment, the music stand 28 is provided on a music stand portion 28a which is provided upright on the top plate 6 of the musical instrument case 1 in a state of being inclined rearward and the music stand portion 28a. And the music score receiver 28b. Also in this case, the music score receiving portion 28 b is provided at approximately the same height as the upper portion of the mirror plate 36 when the mirror plate 36 stands upright on the lower top plate 37.

  Also, on the lower top plate 37 located on the front side of the upper top plate 38 and exposed to the upper side, as shown in FIGS. 4 and 5, the mirror plate 36 is vertically moved by the plurality of first hinges 39. It is rotatably mounted. That is, the lower end portion of the mirror plate 36, which is one end portion, is located on the lower top plate 37 located near the lower end portion of the music stand 28, that is, the lower top located near the front end portion of the upper upper plate 38. A plurality of first hinges 39 are attached on the plate 37.

  As shown in FIGS. 4 to 6, the mirror plate 36 has a length in the front-rear direction (the left-right direction in FIG. 4) from the length from the front end of the upper top plate 38 to the front end of the lower top plate 37. The length of the keyboard 7 in the key arrangement direction is substantially the same as the length between the pair of side plates 5. Thereby, when the mirror surface plate 36 rotates about the plurality of first hinge portions 39 and is arranged on the lower top plate 37, as shown by a two-dot chain line in FIG. It is comprised so that a part may be arrange | positioned in the state protruded ahead rather than the front-end part of the lower-side top plate 37. As shown in FIG.

  Further, as shown in FIGS. 4 and 5, the mirror plate 36 has a movable plate 36a and a mirror surface portion 36b provided on the front surface (the lower surface in FIG. 5) of the movable plate 36a. A lower end portion located on the front side of 36 a is configured to be rotatably mounted on the lower top plate 37 by a plurality of first hinge portions 39. In this case, on the lower front side of the movable plate 36a of the mirror surface plate 36, a cutout recess 36c for housing a sound release cover 40 described later is provided.

  As shown in FIG. 5, the movable plate 36a is configured such that the lower end portion located on the front side of the cutout recess 36c is rotatably mounted on the lower top plate 37 by the plurality of first hinge portions 39. ing. Thus, as in the first embodiment, when the movable plate 36a rotates around the plurality of first hinges 39 and stands on the lower top plate 37, the mirror plate 36 is a mirror surface portion. The keyboard section 7 is reflected on 36b, and the keyboard section 7 reflected on this mirror surface section 36b is configured to be seen by the player.

  In this case, as shown in FIG. 4 and FIG. 5, the sound output cover 40 is rotatably attached to the notch concave portion 36 c of the mirror plate 36 by the plurality of second hinge portions 41. The sound output cover 40 is configured to be capable of opening and closing a plurality of sound output holes 42 provided on the lower side top plate 37 located on the front side of the upper side top plate 38 and exposed to the upper side. That is, the sound release cover 40 is disposed in the cutout recess 36 c provided in the movable plate 36 a of the mirror plate 36, and is rotatably attached to the movable plate 36 a by the plurality of second hinge portions 41 in this state. It is configured.

  In this case, as shown in FIGS. 4 and 5, the notch 36c provided on the movable plate 36a of the mirror plate 36 has a length in the front-rear direction (in the vertical direction in FIG. 5) of the movable plate 36a. The length of the key arrangement direction of the keyboard 7 (the surface direction of the paper surface in FIG. 5) is half or less than the length of the direction (in FIG. It is also formed with a slightly shorter length.

  Therefore, as shown in FIGS. 4 and 5, the sound output lid 40 has a length in the front-rear direction substantially the same as the length in the front-rear direction of the notch recess 36c, and a length in the key arrangement direction of the mirror The length is the same as the length of the face plate 36 in the key arrangement direction, and the thickness thereof is formed to have substantially the same size as the depth of the notch recess 36 c of the mirror plate 36.

  As a result, as shown in FIGS. 4 and 5, the sound output cover 40 rotates with respect to the mirror plate 36 about the plurality of second hinge portions 41, whereby the sound output cover 40 is received in the notch recess 36 c of the mirror plate 36. While being arranged, when it inclines to mirror plate 36, it is constituted so that it may project out from inside notched recess 36c. That is, the sound output cover 40 is disposed on the lower top plate 37 by rotating about the plurality of second hinge portions 41 in a state where the mirror plate 36 is inclined and stood on the lower top plate 37. At the time, the plurality of sound emission holes 42 of the lower top plate 37 are configured to be closed so as to be openable and closable.

  In this case, when the plurality of sound output holes 42 are arranged on the lower top plate 37 by rotating the sound output lid 40 about the plurality of second hinge portions 41 as shown in FIGS. 4 to 6. The sound output lid 40 is provided in the corresponding area of the lower top plate 37. That is, as shown in FIG. 6, the plurality of sound output holes 42 are slit holes having a long length in the key arrangement direction, and a plurality of the sound emission holes 42 are provided along the key arrangement direction of the lower top plate 37. .

  By the way, as shown in FIGS. 4 and 5, each of the plurality of first hinges 39 connecting the mirror plate 36 and the lower top plate 37 is fixed to the lower top plate 37 with the top fixing portion 39a and A mirror surface fixing portion 39b fixed in the notch concave portion 36c of the mirror surface plate 36 and a predetermined load applied to the top plate fixing portion 39a and the mirror surface fixing portion 39b by a frictional force or a spring force And a connecting shaft 39c rotatably connecting the both.

  As a result, in the first hinge portion 39, as in the hinge portion 31 of the first embodiment, a predetermined load is applied to the top plate fixing portion 39a and the mirror surface fixing portion 39b by the connecting shaft portion 39c. The mirror plate 36 is configured to be held at an arbitrary angle with respect to the lower top plate 37. In this case, as shown in FIG. 6, the plurality of first hinges 39 are respectively provided on the same axis at a plurality of locations located at both ends in the key arrangement direction of the keyboard 7 in the mirror plate 36 and in the middle. ing.

  Further, as shown in FIGS. 4 and 5, each of the plurality of second hinges 41 connecting the sound output cover 40 and the mirror plate 36 is a mirror surface fixing portion fixed in the notch recess 36c of the mirror plate 36. 41a, the sound output fixing portion 41b fixed to the sound output lid 40, and the mirror surface fixing portion 41a and the sound output fixing portion 41b in a state where a predetermined load is applied by a frictional force or a spring force, etc. And a connecting shaft portion 41 c rotatably connecting the

  Thus, the second hinge portion 41 applies a predetermined load to the mirror surface fixing portion 41a and the sound output fixing portion 41b by the connecting shaft portion 41c, similarly to the hinge portion 31 and the first hinge portion 39 of the first embodiment. As a result, the sound output lid 40 is configured to be held in an inclined state at an arbitrary angle with respect to the lower top plate 36 and the mirror plate 36 in an independent state.

  In this case, as shown in FIG. 6, the plurality of second hinge portions 41 are provided at a plurality of places different from the first hinge portion 39. That is, the plurality of second hinge portions 41 are respectively provided on the same axis at a plurality of positions located at both ends of the sound emitting cover 40 in the key arrangement direction of the keyboard 7 and in the middle thereof.

  Further, as shown in FIG. 4, the musical instrument case 1 is provided with a pair of side plates in order to form a sound emission path 43 between the front lid 15 of the keyboard lid 13 housed inside and the lower top plate 37. The height of the rear side of 5 is formed slightly higher than in the first embodiment. For this reason, an upper front plate 44 is provided substantially in the middle of the pair of side plates 5 in the front-rear direction. The upper front plate 44 has a pair of upper end portions disposed on the front end surface of the lower top plate 37 and a lower end portion located above the console panel 12 and above the opening / closing locus of the keyboard lid 13. It is provided between the side plates 5.

Next, the operation of the electronic keyboard instrument of the second embodiment will be described.
When playing with this electronic keyboard instrument, the keyboard lid 13 is housed in the instrument case 1 as in the first embodiment. Also at this time, the front end portion of the front cover 15 of the keyboard cover 13 is lifted and pushed backward. Then, the front lid 15 is guided by the guide rail portion 18 of the lid guide portion 14 and moves toward the rear side of the instrument case 1, and is disposed below the upper front plate 42 in a state corresponding to the lower top plate 37 Be done. In this case, a sound emission path 43 is formed between the lower top plate 37 and the front lid 15.

  At the same time, the rear end portion of the rear lid 16 is guided by the guide member 19 of the lid guide portion 14 and disposed between the keyboard portion 7 and the speaker 10 while the rear lid 16 is bent about the hinge 17. As a result, the keyboard lid 13 is housed in the instrument case 1 and the keyboard unit 7 is exposed to the upper front of the instrument case 1. Also at this time, the console panel 12 located on the rear upper side of the keyboard 7 is exposed toward the front side of the musical instrument case 1.

  Then, the music piece 29 is placed on the music stand 28 and the mirror plate 36 is rotated and tilted to a predetermined angle. At this time, the mirror plate 36 is rotated about the plurality of first hinge portions 39, and the sound output lid 40 is rotated together with the mirror plate 36 about the plurality of second hinge portions 41, so that the tilt angle of the mirror plate 36 is obtained. Adjust the That is, the keyboard unit 7 is reflected on the mirror surface portion 36b of the mirror surface plate 36, and the mirror surface plate 36 is tilted so that the reflected keyboard portion 7 has an angle that can be easily viewed by the player.

  When the inclination angle of the mirror plate 36 is adjusted in this manner, the sound output lid 40 is provided with the plurality of second hinge portions 41 in a state where the sound output lid 40 is disposed in the notch recess 36 c of the mirror surface 36. And the keyboard 7 is reflected on the mirror surface 36b of the mirror plate 36, and the mirror plate 36 is adjusted by the plurality of first hinges 39 in a state in which the reflected keyboard 7 is visible to the player. It is held at a tilt angle.

  In this state, when playing by pressing the keys 9 of the keyboard 7 while playing the music while watching the music score 29, the player does not look directly at the keyboard 7, as in the first embodiment, It is possible to play while looking at the keyboard section 7 reflected on the mirror surface portion 36b of the mirror surface plate 36. Also at this time, since the mirror plate 36 is disposed close to the lower side of the musical score 29, when the player looks at the keyboard 7 and the musical score 29 reflected on the mirror plate 36, The angle range is reduced, and the movement of the player's line of sight can be suppressed to a low level, which makes it possible to perform well.

  That is, also at this time, as in the first embodiment, there is no need for the player to directly look at the keyboard section 7 during performance, and when looking at the musical score 29, the keyboard section 7 reflected on the mirror surface section 36b of the mirror surface plate 36 The player can see the keyboard 7 and the musical score 29 reflected on the mirror surface 36b of the mirror plate 36 almost at the same time, thereby allowing the beginner to interrupt the performance. You can play well.

  Also in this case, even though the mirror plate 36 is disposed on the front side of the music stand 28, the music score receiving portion 28b of the music stand 28 is positioned on the upper side of the mirror plate 36. The musical score 29 is disposed on the upper side of the mirror plate 36. For this reason, since the musical score 29 is not obstructed by the mirror plate 36, the player can view the musical score 29 well, and this also makes it possible to play well.

  In this state, since the sound output cover 40 rotates with the mirror plate 36 about the plurality of second hinge portions 41, the plurality of sound output holes 42 provided in the lower top plate 37 are opened. Therefore, among the tones emitted by the speaker 10, the high tone side tone is emitted from the sound release hole 2 a of the bottom plate 2, and the low tone side tone is between the lower top plate 37 and the front lid 15. The sound is emitted from the plurality of sound emission holes 42 of the lower top plate 37 through the sound emission path 43 of FIG.

  At this time, since the musical tones emitted from the plurality of sound emission holes 42 are not blocked by the mirror plate 36 and the music stand 28, the sound emission from the plurality of sound emission holes 42 toward the front side of the musical instrument case 1 is favorably performed. Be done. Further, the tones emitted from the plurality of sound emission holes 42 are reflected by the sound emission cover 40 and the mirror plate 36 toward the player side. Thereby, the performer can well listen to the musical tone emitted by the speaker 10.

  In this case, when the sound output lid 40 is rotated relative to the mirror plate 36 about the second hinge portion 41 to change the tilt of the sound output lid 40, the lower top plate according to the tilt of the sound output lid 40. The echo directions of the tones emitted from the plurality of sound emitting holes 42 can be changed, whereby the directivity of the released tones can be improved. When the sound output cover 40 is rotated relative to the mirror plate 36 about the plurality of second hinge portions 41 and the sound output cover 40 is disposed on the lower top plate 37, the sound output cover 40 is used. A plurality of sound release holes 42 can be closed. Thereby, the tone quality of the musical tone emitted from the speaker 10 can be changed.

  As described above, according to the electronic keyboard instrument of the second embodiment, as in the first embodiment, the mirror plate 36 can be viewed without directly looking at the keyboard 7 without being affected by the music stand 28 and the music score 29. As a result, the keyboard portion 7 can be visually recognized well, and a plurality of sound emission holes 42 are provided on the lower top plate 37 located on the upper side of the musical instrument case 1 located on the front side of the mirror plate 36. The tones emitted by the speaker 10 can be emitted to the player from the plurality of sound emission holes 42.

  That is, the plurality of sound output holes 42 are provided at a plurality of locations on the lower top plate 37 covered by the mirror plate 36 when the mirror plate 36 is rotated and disposed on the lower top plate 37 of the musical instrument case. Therefore, by tilting the mirror plate 36 on the lower top plate 37 and making it stand up, it is possible to open the plurality of sound emission holes 42, whereby the tones emitted by the speaker 10 are released into the plurality of sounds. The holes 42 can be emitted to the player.

  In this case, the instrument case 1 has a height on the rear side of the pair of side plates 5 in order to form a sound emission path 43 between the front lid 15 of the keyboard lid 13 housed inside and the lower top plate 37. Is formed slightly higher than the first embodiment, and the upper front plate 44 is provided substantially in the middle between the pair of side plates 5 in the front-rear direction. The sound emission path 43 formed between the front lid 15 of the keyboard lid 13 and the lower top plate 37 can favorably emit sound from a plurality of sound emission holes 42 of the lower top plate 37.

  Further, in this electronic keyboard instrument, the sound output cover 40 for closing the plurality of sound output holes 42 so as to be openable and closable is rotatably mounted by the plurality of second hinge portions 41 at the lower front of the mirror plate 36. The sound output cover 40 is rotated with respect to the mirror plate 36 while the mirror plate 36 is inclined on the lower top plate 37 and erected so that the keyboard 7 reflected on the mirror plate 36 is viewed from the player. The plurality of sound output holes 42 of the lower top plate 37 can be closed so as to be openable and closable, and the inclination direction of the sound output lid 40 is adjusted to reflect the echoing direction of the tones emitted from the plurality of sound output holes 42. Can change.

  In this case, each of the plurality of first hinges 39 includes a top plate fixing portion 39a fixed to the lower top plate 37, a mirror surface fixing portion 39b fixed to the mirror surface plate 36, the top plate fixing portion 39a and the mirror surface Since the connecting shaft portion 39c rotatably connects both of the fixed portion 39b with the predetermined load applied thereto, the mirror plate 36 can be arbitrarily selected with respect to the lower top plate 36. It can be held in an inclined state at an angle.

  Further, each of the plurality of second hinges 39 includes a mirror surface individual portion 41 a fixed to the mirror surface plate 36, a sound output fixing portion 41 b fixed to the sound output lid 40, the mirror surface fixing portion 41 a and the sound output fixing portion Since a connecting shaft portion 41c rotatably connecting both of them in a state in which a predetermined load is applied to 41b, a sound output cover is provided to lower side top plate 36 and mirror plate 36 40 can be held in an independent state and in an inclined state at an arbitrary angle.

  In the second embodiment described above, a plurality of sound output holes 42 provided in the lower top plate 37 can be closed so as to be opened and closed by one sound output lid 40 rotatably attached to the mirror surface plate 36. Although the case has been described, the present invention is not limited thereto. For example, a plurality of sound emitting covers corresponding to a plurality of sound emitting holes 42 provided in the lower top plate 37 are rotatably attached to the mirror plate 36. It may be. With this configuration, the sound emission volume from the plurality of sound emission holes 42 can be finely adjusted.

  In the first and second embodiments described above, the mirror plates 30 and 36 are formed in the shape of a long flat plate along the key arrangement direction of the keyboard 7. However, the present invention is not limited to this. The mirror plate may be formed in a curved plate shape which gently curves in a concave curve shape along the key arrangement direction of the keyboard 7. According to this structure, both sides of the keyboard portion 7 can be displayed so as to be easily viewable to the player by the mirror surface plate which is gently curved in a concave curved surface.

  In the first and second embodiments described above, the mirror plates 30 and 36 include the movable plate 30a and the mirror portion 30b. However, the present invention is not limited to this, and the mirror itself may be used.

  Furthermore, although the case where it applied to the electronic keyboard instrument provided with the speaker 10 was described in 1st, 2nd embodiment mentioned above, it does not necessarily need to be an electronic keyboard instrument, for example, it applies also to acoustic piano. be able to.

As mentioned above, although some embodiments of this invention were described, this invention is not limited to these, The invention described in the claim, and the range of equivalence are included.
The invention described in the claims of the present application is appended below.

(Supplementary note)
The invention according to claim 1 is arranged at a position where the keyboard portion, the music stand, and the position where the player can see the reflection of the keyboard portion appear, and at a position closer to the music stand than the keyboard portion. It is a keyboard instrument characterized by having a mirror.

  The invention according to claim 2 is the keyboard musical instrument according to claim 1, further comprising: an instrument case provided with the keyboard section exposed upward, and the mirror includes a first hinge section. A keyboard musical instrument characterized in that the musical instrument case is attached to the musical instrument case so as to be able to stand upright and fall over in the front-rear direction.

  The invention according to claim 3 is the keyboard instrument according to claim 1, wherein the upper part of the instrument case located below the mirror is covered by the mirror when the mirror is inclined toward the keyboard side. It is a keyboard instrument characterized in that a sound emission hole is provided.

  According to a fourth aspect of the present invention, in the keyboard instrument according to the third aspect, a sound output lid closing the sound output hole is rotatably attached to the mirror by a second hinge portion, and the lower portion of the mirror In the keyboard instrument, there is provided a notch concave portion for housing the sound release cover.

  The invention according to claim 5 is the keyboard instrument according to any one of claims 1 to 4, wherein, when the mirror stands upright on the side of the keyboard unit, the keyboard unit is copied to the mirror It is a keyboard musical instrument characterized in that it is a position, and is provided at a position which does not interrupt a musical score erected on the music stand.

  The invention according to claim 6 is the keyboard instrument according to any one of claims 1 to 5, wherein the mirror comprises a mirror surface plate and a mirror surface portion.

DESCRIPTION OF SYMBOLS 1 musical instrument case 6, 35 top board 7 keyboard part 9 key 10 speaker 13 keyboard lid 14 lid guide part 15 front lid 16 back lid 17 hinge 28 music stand 28a score stand 28b score reception part 29 score 30, 36 mirror plate 30a, 36a movable plate 30b, 36b mirror surface portion 31 hinge portion 37 lower keyboard 38 upper top plate 39 first hinge portion 40 sound emitting cover 41 second hinge portion 42 sound emitting hole 43 sound emitting path

Claims (6)

The keyboard section,
Music stand,
An instrument case in which the keyboard unit is provided;
A mirror disposed at a position where the keyboard portion appears to be reflected and reflected from the player, and a position closer to the music stand than the keyboard portion;
Equipped with
The keyboard instrument according to claim 1, wherein the mirror is attached to the musical instrument case so as to be upright and fall over in the front-rear direction of the musical instrument case by a first hinge portion . In the keyboard instrument according to claim 1,
The mirror comprises a mirror plate including a mirror portion,
The keyboard instrument , wherein the mirror plate is attached to a top plate of the instrument case . In the keyboard musical instrument according to claim 2, the upper part of the musical instrument case located below the mirror surface plate, sound output hole covered by the mirror face plate is provided in the mirror surface plate is brought down next to A keyboard instrument characterized by In the keyboard musical instrument according to claim 3, in the mirror surface plate, keyboard instrument, wherein the sound emission lid for closing the sound emitting hole is attached, et al is rotatably by the second hinge portion. 5. The keyboard instrument according to claim 4 , wherein a notch concave portion for housing the sound emitting lid is provided at a lower portion of the mirror plate . The keyboard instrument according to any one of claims 2 to 5, wherein the music stand includes a music score receiving portion provided at substantially the same height as an upper portion of the mirror plate which has stood up. A musical instrument.

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