Operator

Abstract

To provide an operator that allows light emission, corresponding to an operation mode, to be visually recognized over a wide range, and an electronic musical instrument comprising such an operator.SOLUTION: A pitch bender 40 comprises LEDs 43a to 43c which emit light, and a substantially disk-like operation wheel 44 which can be operated to rotate. The operation wheel 44 has a light guide member 48 which guides light, impinging from the LEDs 43a to 43c, radially from an outer peripheral part, and a reflection surface 48d which reflects a part of the light, guided by the light guide member 48, by the outer peripheral part to an axial direction orthogonal to the radial direction. A player can visually recognize not only light guided by the light guide member 48 and then emitted radially from an end edge 48a of the light guide member 48, but also light reflected by the reflection surface 48d within the light guide member 48 and then emitted axially from a plate face side of the light guide member 48.SELECTED DRAWING: Figure 10

Description

Technical Field

[0001] The present invention relates to an operation Child .

Background Art

[0002] Conventionally, in electronic musical instruments such as electronic pianos, those provided with an operator for imparting performance effects such as pitch bend to musical sounds are known. In this type of electronic musical instrument, one has been proposed that has a light-emitting part and changes the light-emitting mode of the light-emitting part according to the operation mode of the operator, that is, the control mode of the performance effect. For example, Patent Document 1 discloses an electronic keyboard instrument in which any key can be designated as an operator for imparting a performance effect to a musical sound. In this electronic keyboard instrument, a blue LED and a red LED are embedded in each semi-transparent key, and the light-emitting mode of each LED changes according to the control mode of the performance effect.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the electronic musical instrument of Patent Document 1 above, a performer can visually recognize the light emission of the LED by looking at the key in which the light-emitting LED is embedded from the front side of its surface. However, there is a risk that it becomes difficult to visually recognize the light emission of the LED when viewed from an angle deviated from the emission direction of the LED, for example, when the electronic musical instrument is viewed from its side. For this reason, there is a risk that good visibility cannot be obtained for the light emission according to the operation mode of the operator.

[0005] The present invention aims to provide an operation capable of visually recognizing light emission according to an operation mode over a wide range Child .

Means for Solving the Problem

[0006] The operator of one aspect of the present invention includes an operable operation unit, and the operation unit A light guide unit that guides light from a light source unit that is incident thereon and emits the light radially from the outer peripheral portion, and has a wheel member disposed on one side of the plate surface And and a reflecting portion for reflecting a part of the light from the light source portion in a direction different from the radial direction of the operation unit is provided on the inclined surface of the wheel member.

Advantages of the Invention

[0007] According to the present invention, it is possible to provide an operation Child that enables visual recognition of light emission according to the operation mode over a wide range.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Embodiments for Carrying Out the Invention

[0009] Embodiments of the present invention will be described with reference to the drawings. An electronic keyboard musical instrument (electronic musical instrument) 10 shown in FIG. 1 includes a keyboard section 20 having a plurality of white keys and a plurality of black keys, and a case 30. Inside the case 30, a control board (not shown) and the like are housed. Note that coordinate axes are shown in each figure. Hereinafter, in each figure, the X-axis direction is the left-right direction of the electronic keyboard musical instrument 10 (the positive X-axis direction is the left direction), the Y-axis direction in each figure is the front-rear direction of the electronic keyboard musical instrument 10 (the positive Y-axis direction is the front direction), and the Z-axis direction in each figure is the up-down direction of the electronic keyboard musical instrument 10 (the positive Z-axis direction is the up direction).

[0010] The case 30 has a horizontally long rectangular shape with the left-right direction as the longitudinal direction, is made of synthetic resin, and is divided into an upper case 32, a lower case 34, a left case 36, and a right case 38. A dial 12 for controlling the volume of musical sound is provided on a part of the upper surface of the upper case 32. As shown in FIG. 2, the left case 36 has an upper surface panel 36a constituting its upper surface and a case side wall 36b constituting its side wall. An operation opening 36a1 is provided in the front part of the upper surface panel 36a, through which a part (operation wheel 44, to be described later) of a pitch bender (operating element) 40 for applying and controlling pitch bend to musical sound is exposed. A light-emitting button 14 for starting or stopping the light emission of each of the LEDs 43a to 43c (see FIG. 5 and the like) provided on the pitch bender 40 and a setting button 16 for various settings are provided in the rear part of the upper surface panel 36a. Also, an earphone jack 18 is provided on the front surface of the case side wall 36b.

[0011] On the inner surface side of the left case 36, an internal frame 37, which is a frame-shaped member, is provided. Inside the internal frame 37, a first substrate 37a that receives the pressing operations of the light-emitting button 14 and the setting button 16, a second substrate 37b that receives the insertion and removal operations of the earphone jack 18, and a pitch bender 40 and the like are attached. Between the first substrate 37a and the second substrate 37b, and between the first substrate 37a and the pitch bender 40, they are electrically connected by connection wirings (not shown). Also, the first substrate 37a and the second substrate 37b are electrically connected to the control substrate of the electronic keyboard instrument 10 by connection wirings (not shown).

[0012] The configuration of the pitch bender 40 will be described in detail. As shown in FIGS. 3 to 5, the pitch bender 40 includes a variable resistor 41, a fixing fitting 42, a light source substrate 43, an operation wheel (operation part) 44, a torsion spring 45, and a holding member 46. The operation wheel 44 has a substantially disc shape, and has a wheel member 47, a light guide member (light guide part) 48, and a double-sided tape 49 for bonding between the wheel member 47 and the light guide member 48 (see FIG. 5). From the operation opening 36a1 of the left case 36, the upper part of the operation wheel 44 is exposed.

[0013] The variable resistor 41 is a rotary variable resistor that detects the rotation angle, and has a sensor front part 41a, a sensor rear part 41b, a shaft-like part 41c, and three wiring connection parts 41d extending from the lower side of the sensor front part 41a. The sensor front part 41a has a substantially cylindrical shape, and the sensor rear part 41b has a substantially cylindrical shape that is thinner than the sensor front part 41a and protrudes leftward from the left side of the sensor front part 41a. The sensor front part 41a and the sensor rear part 41b constitute a rotation angle sensor.

[0014] The shaft portion 41c extends axially along the left - right direction. The right - hand end portion is inserted into the inside of the cylinder of the sensor rear portion 41b and is rotatable about its axis. The cross - section of the portion of the shaft portion 41c exposed from the sensor rear portion 41b is substantially semi - circular except in the vicinity of the boundary portion with the sensor rear portion 41b. Connection wirings connected to the first substrate 37a are connected to the respective wiring connection portions 41d. The variable resistor 41 detects the rotation angle of the shaft portion 41c from the resistance value that changes according to the rotation of the shaft portion 41c in the sensor front portion 41a and the sensor rear portion 41b, converts the rotation angle into an electrical signal, and outputs it to the first substrate 37a via the connection wiring.

[0015] The fixing bracket 42 is a bracket for fixing the respective members constituting the pitch bender 40 to each other and for fixing the pitch bender 40 to the internal frame 37, and its cross - section is substantially L - shaped (see FIG. 10). The fixing bracket 42 has a flat plate portion 42a arranged in a posture with both plate surfaces facing in the up - down direction, and a standing wall portion 42b that rises flatly from the right - hand end portion of the flat plate portion 42a in a posture with both plate surfaces facing in the left - right direction. Further, the fixing bracket 42 has a first screwing portion 42c that extends downward from a part of the left - hand end portion of the flat plate portion 42a, and second screwing portions 42d that extend flatly to the right from both the front and rear sides of the rising tip portion of the standing wall portion 42b. The fixing bracket 42 is fixed to the internal frame 37 by screwing the first screwing portion 42c and the second screwing portions 42d to the internal frame 37, respectively.

[0016] Inside the vertical wall portion 42b where both the second screwing portions 42d extend, a pair of slits 42b1 that open upward and extend along the vertical direction are provided. Inside both the slits 42b1, a flat-plate-shaped resistor fixing portion 42b2 that extends above both the second screwing portions 42d is provided. At a portion of the resistor fixing portion 42b2 that is located above both the second screwing portions 42d, a fixing opening 42b3 that opens in a circular shape and through which the sensor rear portion 41b of the variable resistor 41 is inserted is provided. The variable resistor 41 is connected to the resistor fixing portion 42b2 by being bolted with the sensor rear portion 41b inserted through the fixing opening 42b3. Since the slits 42b1 are provided on both sides of the resistor fixing portion 42b2, the resistor fixing portion 42b2 has flexibility in the left-right direction (axial direction of the shaft-like portion 41c) compared to other portions of the fixing bracket 42 in a state where the fixing bracket 42 is fixed to the inner frame 37.

[0017] The light source substrate 43 is a flat-plate-shaped printed circuit board arranged with both board surfaces facing in the vertical direction. The light source substrate 43 is arranged on the flat plate portion 42a of the fixing bracket 42 and fixed to the flat plate portion 42a by screwing. On the light source substrate 43, three LEDs (light source portions) 43a, 43b, 43c that emit light in different wavelength bands are provided. Each of the LEDs 43a to 43c is arranged linearly and at equal intervals along the front-rear direction and emits light upward from the light source substrate 43. Also, on the lower surface of the light source substrate 43, a substantially rectangular parallelepiped-shaped light source connection portion 43d is provided (see FIGS. 8 and 10). A connection wiring extending from the first substrate 37a side is connected to the light source connection portion 43d. Note that an insulating plate IP for insulating between the two is sandwiched between the flat plate portion 42a of the fixing bracket 42 and the light source substrate 43.

[0018] The operation wheel 44 is attached to the shaft portion 41c of the variable resistor 41 and rotates around the axis of the shaft portion 41c together with the shaft portion 41c. A part of the upper surface of the operation wheel 44 is provided with an operation recess 44a that is recessed in a substantially arc shape. The operation recess 44a is exposed from the operation opening 36a1 of the left case 36, and is provided so that when the operator rotates the operation wheel 44, it is easy to perform the rotation operation by placing a finger or the like thereon. As shown in FIG. 6, the operation wheel 44 has an initial state P0 in which the operation recess 44a is directed vertically upward, and a first state P1 rotated 45 degrees forward around the axis of the shaft portion 41c from the initial state P0, and a second state P2 rotated 45 degrees backward. It can be rotated within the range.

[0019] The wheel member 47 of the operation wheel 44 is made of synthetic resin and is a substantially fan-shaped plate member with about one-fourth of a circle missing in the lower part. An outer wall portion 47a that extends slightly in a wall shape toward the right is provided at a portion of the edge of the wheel member 47 excluding the lower part (see FIGS. 5 and 7). At the center in the front-rear direction of the upper part of the outer wall portion 47a, a wheel-side recess 47a1 that is recessed in an arc shape and constitutes a part of the operation recess 44a is provided. A wheel-side through hole 47b that opens in a substantially semi-circular shape along the cross-sectional shape of the shaft portion 41c and penetrates in the left-right direction is provided at a substantially central portion of the wheel member 47. The wheel member 47 is fixed to the shaft portion 41c by inserting the shaft portion 41c into the wheel-side through hole 47b.

[0020] Further, around the wheel-side through hole 47b on the left side plate surface of the wheel member 47, a wheel-side protruding portion 47c that protrudes leftward is provided. The wheel-side protruding portion 47c is provided in a substantially L shape when viewed from the left side so that the wheel-side through hole 47b is hidden when the wheel member 47 is viewed from above. Also, on the left side plate surface of the wheel member 47, a spring fixing portion 47d that protrudes in a substantially cylindrical shape toward the left is provided (see FIG. 3). The above-described wheel-side through hole 47b is provided so as to penetrate inside the spring fixing portion 47d. Below the spring fixing portion 47d, a first spring contact portion 47e that protrudes leftward in a substantially flat plate shape with both plate surfaces facing in the vertical direction is provided. The plate surface of the first spring contact portion 47e is gently curved so as to be convex downward.

[0021] The light guide member 48 of the operation wheel 44 has a substantially disc shape and is provided with a material having excellent light transmittance (for example, acrylic resin). As shown in FIG. 7, the light guide member 48 is disposed above the light source substrate 43 with a slight gap provided between each of the LEDs 43a to 43c, and the light emitted from each of the LEDs 43a to 43c enters from the lower portion thereof. The left side plate surface of the light guide member 48 is attached via a double-sided tape 49 to the plate surface located inside the outer wall portion 47a of the wheel member 47, and rotates together with the wheel member 47 around the axis of the shaft-like portion 41c. Note that a tape-side through hole 49a through which the shaft-like portion 41c is inserted is provided at a substantially central portion of the double-sided tape 49. In this way, the wheel member 47 is disposed on one plate surface side of the light guide member 48 and supports the light guide member 48.

[0022] At the edge (outer peripheral portion) 48a of the light guide member 48, at the center in the front-rear direction of the upper portion thereof, there is provided a light guide side recess 48a1 which is formed in a substantially arc shape and has substantially the same shape as the wheel side recess 47a1 and constitutes a part of the operation recess 44a. At a substantially central portion of the light guide member 48, there is provided a light guide side through hole 48b penetrating in the left-right direction. The light guide member 48 has the shaft portion 41c inserted through the light guide side through hole 48b and rotates around the axis of the shaft portion 41c together with the wheel member 47. Around the light guide side through hole 48b on the right side plate surface of the light guide member 48, there is provided a light guide side protruding portion 48c protruding rightward. The light guide side protruding portion 48c is provided in a substantially L shape when viewed from the right side so that the light guide side through hole 48b is hidden when the light guide member 48 is viewed from above.

[0023] The torsion spring 45 has a coil spring portion 45a and a pair of biasing portions 45b. The coil spring portion 45a is a coil spring and is fixed to the spring fixing portion 47d in a state of being wound around the outer peripheral surface of the spring fixing portion 47d. Both ends of the coil spring portion 45a extend to below the spring fixing portion 47d. The pair of biasing portions 45b are formed of elongated cylindrical rubber members inserted through both ends of the coil spring portion 45a. When the operation wheel 44 is in the initial state P0 position, the inner portions of the pair of biasing portions 45b abut against the first spring abutting portion 47e while biasing the first spring abutting portion 47e in a manner of sandwiching the first spring abutting portion 47e.

[0024] The holding member 46 is made of synthetic resin and is a member for holding the position of the torsion spring 45. The holding member 46 has a bottom portion 46a and side plate portions 46b. The bottom portion 46a is disposed above the light source substrate 43 and has a shape that does not cover the light emitting sides of the respective LEDs 43a to 43c. The front and rear both sides of the bottom portion 46a slightly rise upward in a block shape, and the inner surface thereof is recessed in a curved shape along the outer peripheral surface of the operation wheel 44. The side plate portions 46b rise upward in a flat plate shape from the left end portion of the bottom portion 46a to the spring fixing portion 47d of the wheel member 47 with both plate surfaces facing in the left-right direction. At the tip of the side plate portion 46b, a wheel receiving portion 46b1 that is notched in a substantially arc shape along the outer peripheral surface of the spring fixing portion 47d is provided. The wheel receiving portion 46b1 is in proximity to the spring fixing portion 47d with a slight gap therebetween.

[0025] Also, in a portion of the right plate surface of the side plate portion 46b that is located below the first spring contact portion 47e, a second spring contact portion 46c that projects substantially flatly to the right with both plate surfaces facing in the up-down direction is provided. The plate surface of the second spring contact portion 46c is gently curved so as to be convex downward and has substantially the same width as the first spring contact portion 47e. When the operation wheel 44 is in the initial state P0 position, the pair of biasing portions 45b of the torsion spring 45 contact the second spring contact portion 46c while biasing the second spring contact portion 46c in a form that sandwiches the second spring contact portion 46c inside the lower side of the first spring contact portion 47e.

[0026] In the pitch bender 40 configured as described above, when the operation wheel 44 is rotationally operated, the shaft-like portion 41c of the variable resistor 41 interlocks with the operation wheel 44 and the shaft-like portion 41c rotates around its axis. When the shaft-like portion 41c rotates, the variable resistor 41 converts its rotation angle into an electrical signal and outputs the electrical signal to the first substrate 37a. The electrical signal output to the first substrate 37a side is output to the control substrate of the electronic keyboard instrument 10 via the first substrate 37a, and is analyzed and controlled by the control substrate, and a pitch bend effect corresponding to the rotation angle of the operation wheel 44 is imparted to the musical tone of the electronic keyboard instrument 10.

[0027] Also, in the pitch bender 40, when the operation wheel 44 is rotated forward, the wheel-side overhanging portion 47c indirectly contacts the front side of the second spring contact portion 46c in such a manner that it sandwiches the front-side biasing portion 45b of the torsion spring 45 therebetween, and the rotation of the operation wheel 44 forward is restricted in the first state P1 where the operation wheel 44 is rotated 45 degrees forward from the initial state P0. Similarly, when the operation wheel 44 is rotated backward, the wheel-side overhanging portion 47c indirectly contacts the rear side of the second spring contact portion 46c in such a manner that it sandwiches the rear-side biasing portion 45b of the torsion spring 45 therebetween, and the rotation of the operation wheel 44 backward is restricted in the second state P2 where the operation wheel 44 is rotated 45 degrees backward from the initial state P0. Note that within the range where the operation wheel 44 can be rotationally operated, the light source substrate 43 etc. is prevented from being visually recognized from the operation opening 36a1 by the wheel-side overhanging portion 47c and the light guide-side overhanging portion 48c provided on the operation wheel 44.

[0028] Also, in the pitch bender 40, when the operation wheel 44 is rotationally operated, one side of the pair of biasing portions 45b of the torsion spring 45 rotates away from the second spring contact portion 47e while being in contact with the first spring contact portion 47e, and the other side rotates away from the first spring contact portion 47e while being in contact with the second spring contact portion 47e, and the interval between the pair of biasing portions 45b widens. For this reason, in the state where the operation wheel 44 is rotationally operated from the initial state P0, when a finger etc. is released from the operation recess 44a of the operation wheel 44, the operation wheel 44 returns to the position of the initial state P0 by the elastic restoring force of the torsion spring 45. That is, the position of the torsion spring 45 is held by the holding member 46 (the second spring contact portion 47e).

[0029] Also, in the pitch bender 40, the light emission modes of the LEDs 43a to 43c are controlled by a control board according to the pitch bend effect imparted to the musical sound, other operation modes, and the like. Specifically, the control board performs control to change the emission color, emission interval, etc. of the LEDs 43a to 43c. The light emitted from the LEDs 43a to 43c enters the light guide member 48, is guided by the light guide member 48, and is emitted so that the performer can visually recognize it. Thereby, the performer can know the musical sound control state of the electronic keyboard musical instrument 10. Note that the light guiding mode of the light emitted from the LEDs 43a to 43c will be described in detail later.

[0030] Next, a configuration in which light is reflected by the operation wheel 44 will be described in detail. As shown in FIG. 7, on the wheel member 47, an inclined surface 47f is provided from the outer wall portion 47a to the inner surface thereof (the right side plate surface of the wheel member 47). As shown in FIG. 10, the inclined surface 47f is inclined with respect to the radial direction when the wheel member 47 having a substantially fan shape is viewed in a cross section along the radial direction thereof (a direction orthogonal to the left-right direction). Specifically, the inclination angle θ1 of the inclined surface 47f with respect to the radial direction of the wheel member 47 is 45 degrees.

[0031] The light guide member 48 is supported by the wheel member 47, and a substantially left half region of the upper portion of the edge 48a thereof is covered by the outer wall portion 47a of the wheel member 47 (see FIGS. 3 and 4). A portion of the edge 48a of the light guide member 48 covered by the outer wall portion 47a is a reflecting surface (reflecting portion) 48d which is an inclined surface inclined along the inclined surface 47f of the wheel member 47. That is, the reflecting surface 48d is inclined with respect to the radial direction (a direction orthogonal to the left-right direction) of the light guide member 48. Specifically, the inclination angle θ1 of the reflecting surface 48d with respect to the radial direction of the light guide member 48 is 45 degrees (see FIG. 10). The reflecting surface 48d faces the inclined surface 47f with a slight gap therebetween. The surface of the reflecting surface 48d is subjected to embossing in which an uneven surface for diffusely reflecting the light emitted from the LEDs 43a to 43c is provided.

[0032] As shown in FIG. 8, the light guide member 48 having a substantially disc shape is arranged such that the lower portion of its edge 48a overlaps with each of the LEDs 43a to 43c in the vertical direction. The edge 48a of the light guide member 48 is provided with a knurling process over its entire circumference. The lower portion of the edge 48a of the light guide member 48 (specifically, the portion located below the light guide side overhang portion 48c) serves as an incident surface IS on which the light emitted from each of the LEDs 43a to 43c is incident. Further, a portion of the upper portion of the edge 48a of the light guide member 48 (specifically, the portion located above the light guide side overhang portion 48c) that does not face the inclined surface 47f serves as a first emission surface ES1 from which a part of the light guided within the light guide member 48 is emitted.

[0033] Also, a portion of the right side plate surface of the light guide member 48 that is located above the light guide side overhang portion 48c serves as a second emission surface ES2 from which a part of the light guided within the light guide member 48 is emitted. The second emission surface ES2 is a transparent surface. The portion of the right side plate surface of the light guide member 48 excluding the second emission surface ES2 is provided with fine unevenness processing, and emission of light from this portion is suppressed. The left side plate surface of the light guide member 48 is a black printed surface, so that the interior of the wheel member 47 arranged on the left side of the light guide member 48 cannot be visually recognized from the right side of the light guide member 48.

[0034] Next, the optical paths of the light emitted from each of the LEDs 43a to 43c on the light source substrate 43 will be described. As shown in FIGS. 9 and 10, the light emitted from each of the LEDs 43a to 43c enters the incident surface IS of the light guide member 48. The light that has entered the incident surface IS of the light guide member 48 is irregularly reflected at the incident surface IS while its intensity is suppressed by the embossing applied to the incident surface IS, and is diffused in the radial direction within the light guide member 48. A part of the light diffused in the radial direction within the light guide member 48 reaches the first emission surface ES1 and is emitted while being diffused from the first emission surface ES1 (hereinafter, the plurality of optical paths in which the light diffused within the light guide member 48 by the incident surface IS reaches the first emission surface ES1 are collectively referred to as the "first optical path L1"). (Refer to the arrows shown by solid lines in FIGS. 9 and 10). The light emitted from the portion exposed from the operation opening 36a1 among the light emitted from the first emission surface ES1 via the first optical path L1 is emitted outside the operation opening 36a1 in a form in which its optical axis is along the radial direction of the light guide member 48, and can be visually recognized by the performer.

[0035] Also, another part of the light diffused in the radial direction of the light guide member 48 by the incident surface IS reaches the reflection surface 48d. The light that has reached the reflection surface 48d is diffused while being reflected in the direction of the right side plate surface of the light guide member 48 (a direction intersecting the radial direction) by the reflection surface 48d. Specifically, the light that has reached the reflection surface 48d has its optical axis converted by 90 degrees to the right by the reflection surface 48d inclined at an angle of 45 degrees with respect to the radial direction, and is diffused while being reflected to the right along the normal direction of the light guide member 48 having a substantially disk shape (the axial direction of the shaft-like portion 41c orthogonal to the radial direction).

[0036] The light reflected to the right along the normal direction of the light guide member 48 by the reflecting surface 48d reaches the second emission surface ES2 and is emitted while being diffused from the second emission surface ES2 (hereinafter, a plurality of optical paths in which the light diffused in the light guide member 48 by the incident surface IS is reflected by the reflecting surface 48d and reaches the second emission surface ES2 are collectively referred to as the "second optical path L2"). (Refer to the arrow indicated by the broken line in FIG. 10). Among the light emitted from the second emission surface ES2 via the second optical path L2, the light emitted from the portion exposed from the operation opening 36a1 is emitted to the right toward the outside of the operation opening 36a1 in a form in which its optical axis is along the normal direction of the light guide member 48, and can be visually recognized by the performer.

[0037] As described above, the pitch bender 40 according to the present embodiment includes each of the LEDs 43a to 43c that emits light, and an operation wheel 44 that is substantially disk-shaped and rotatable around the axis of the shaft-shaped portion 41c of the variable resistor 41. The operation wheel 44 has a light guide member 48 that guides the light from each of the incident LEDs 43a to 43c and emits the light in the radial direction from the edge 48a, and a reflecting surface 48d that reflects a part of the light guided by the light guide member 48 in the axial direction orthogonal to the radial direction at the edge 48a.

[0038] Since the pitch bender 40 is configured as described above, the performer can visually recognize not only the light guided by the light guide member 48 and emitted in the radial direction from the edge 48a of the light guide member 48 (the light emitted via the first optical path L1), but also the light reflected by the reflecting surface 48d in the light guide member 48 and emitted in the axial direction from the plate surface side of the light guide member 48 (the light emitted via the second optical path L2). Therefore, the performer can obtain good visibility over a wider range compared to the conventional pitch bender 40 in which light is emitted only from the outer surface in the radial direction of the light guide member 48. As described above, in the pitch bender 40 according to the present embodiment, the light emission modes of the respective LEDs 43a to 43c are controlled according to the rotation angle around the axis of the shaft-shaped portion 41c, so that the light emission of the respective LEDs 43a to 43c corresponding to the operation mode of the operation wheel 44 can be visually recognized over a wide range.

[0039] In addition, in the pitch bender 40, the reflecting surface 48d of the operation wheel 44 is provided at the edge 48a of the light guide member 48. Thereby, a specific configuration of the reflecting surface 48d for reflecting a part of the light guided by the light guide member 48 in the axial direction orthogonal to the radial direction at the edge 48a can be provided.

[0040] In addition, in the pitch bender 40, the reflecting surface 48d is an inclined reflecting surface 48d with respect to the radial direction of the light guide member 48. Thereby, the light guided in the radial direction within the light guide member 48 can be reflected by the reflecting surface 48d in the axial direction orthogonal to the radial direction.

[0041] In addition, in the pitch bender 40, the inclination angle θ1 of the reflecting surface 48d with respect to the radial direction of the light guide member 48 is 45 degrees. Thereby, the light guided in the radial direction within the light guide member 48 can be reflected by the reflecting surface 48d in such a manner that its optical axis is along the normal direction of the light guide member 48.

[0042] In addition, in the pitch bender 40, the operation wheel 44 has a wheel member 47 that supports the left side plate surface of the light guide member 48, and the reflecting surface 48d is provided on the light guide member 48 so as to face the inclined surface 47f of the wheel member 47. Thereby, the light guide member 48 can be supported by the wheel member 47 in the operation wheel 44. Further, since the light guided in the radial direction within the light guide member 48 is reflected by the reflecting surface 48d near the edge 48a of the light guide member 48, the light reflected by the reflecting surface 48d can be made easily visible when only the vicinity of the edge 48a of the light guide member 48 is exposed to the outside.

[0043] In addition, in the pitch bender 40, an uneven surface having a knurling process is provided on the reflecting surface 48d. Thereby, since the light reflected by the reflecting surface 48d is diffused while being reflected, the light reflected by the reflecting surface 48d can be made easily visible.

[0044] In addition, the pitch bender 40 includes three LEDs 43a to 43c that emit light in different wavelength bands, and the light guide member 48 guides the light from the three incident LEDs 43a to 43c in the radial direction respectively. Thereby, the light guided in the light guide member 48 and emitted from the light guide member 48 can be changed to various emission colors, and various emission modes corresponding to various operation modes of the operation wheel 44 can be realized.

[0045] Moreover, the electronic keyboard instrument 10 according to the present embodiment includes a pitch bender 40. Thereby, the performer can visually recognize not only the light emitted from each of the LEDs 43a to 43c and emitted through the first optical path L1 from above the electronic keyboard instrument 10, but also the light emitted through the second optical path L2 from the right side of the electronic keyboard instrument 10. Therefore, compared with the conventional electronic keyboard instrument 10, good visibility can be obtained over a wide range, and an electronic keyboard instrument 10 capable of visually recognizing the light emission of each of the LEDs 43a to 43c corresponding to the operation mode of the operation wheel 44 over a wide range can be realized.

[0046] In addition, in the embodiment described above, the configuration in which the reflecting surface 48d, which is a reflecting portion for reflecting the light from each of the incident LEDs 43a to 43c, is provided on the light guide member 48 is illustrated, but a reflecting portion may be provided on the inclined surface of the wheel member 47.

[0047] It should be noted that the embodiments described above are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and its equivalent scope. For example, in the above embodiment, a pitch bender is illustrated as an operator, but other operators such as a modulation wheel may be used. Also, for example, in the above embodiment, an electronic keyboard instrument is illustrated as an electronic musical instrument, but other electronic musical instruments without a keyboard may also be used.

[0048] The invention described in the first claim of the present application is appended below. [1] A light source unit that emits light, and a substantially disk-shaped operation unit that can be rotationally operated. The operation unit has a light guide unit that guides the light from the incident light source unit and emits the light radially from the outer peripheral portion, and a reflection unit that reflects a part of the light guided by the light guide unit in the axial direction orthogonal to the radial direction at the outer peripheral portion. An operator. [2] The operator according to [1], wherein the reflection unit is provided at the outer peripheral portion of the light guide unit. [3] The operator according to [1] or [2], wherein the reflection unit has a reflection surface inclined with respect to the radial direction. [4] The operator according to [3], wherein the inclination angle of the reflection unit with respect to the radial direction is 45 degrees. [5] The operation unit has a wheel member disposed on one plate surface side of the light guide unit, and the reflection unit is provided on the light guide unit so as to face the inclined surface of the wheel member. The operator according to any one of [1] to [4]. [6] The operator according to any one of [1] to [5], wherein the reflection unit is provided with a concavo-convex surface having a knurling process. [7] A plurality of the light source units that emit light in different wavelength bands are provided, and the light guide unit guides the light from the plurality of incident light source units in the radial direction, respectively. The operator according to any one of [1] to [6]. [8] An electronic musical instrument including the operator according to any one of [1] to [7].

Explanation of Signs

[0049] 10 Electronic keyboard musical instrument 12 Dial 14 Light-emitting button 16 Setting button 18 Headphone jack 20 Keyboard section 30 Case 32 Upper case 34 Lower case 36 Left case 36a Upper panel 36a1 Operation opening 36b Case side wall 37 Inner frame 37a First substrate 37b Second substrate 38 Right case 40 Pitch bender 41 Variable resistor 41a Sensor front part 41b Sensor rear part 41c Shaft-like part 41d Wiring connection part 42 Fixing bracket 42a Flat plate part 42b Standing wall part 42b1 Slit 42b2 Resistor fixing part 42b3 Fixing opening 42c First screw fixing part 42d Second screw fixing part 43 Light source substrate 43a LED 43b LED 43c LED 43d Light source connection part 44 Operation wheel 44a Operation recess 45 Torsion spring 45a Coil spring part 45b Biasing part 46 Holding member 46a Bottom 46b Side plate part 46b1 Wheel receiving part 46c Second spring contact part 47 Wheel member 47a1 Wheel-side recess 47b Wheel-side through hole 47c Wheel-side overhanging part 47d Spring fixing part 47e First spring contact part 47f Inclined surface 48 Light guide member 48a Edge 48a1 Light guide-side recess 48b Light guide-side through hole 48c Light guide-side overhanging part 48d Reflective surface 49 Double-sided tape 49a Tape-side through hole ES1 First emission surface ES2 Second emission surface IP Insulating plate IS Incident surface L1 First optical path L2 Second optical path P0 Initial state P1 First state P2 Second state θ1 Tilt angle

Claims

1. An operator having an operable operation unit, wherein the operation unit includes: a light guide unit that guides light from an incident light source unit and emits the light radially from an outer peripheral portion; and a wheel member disposed on one plate surface side of the light guide unit, wherein a reflection unit that reflects a part of the light from the light source unit in a direction different from the radial direction of the operation unit is provided on an inclined surface of the wheel member. The operator.

2. The inclined surface and the reflection unit are provided above the wheel member. The operator according to Claim 1.

3. An outer wall portion extending to one surface side of the wheel member is provided at an edge of the wheel member, and the inclined surface and the reflection unit are provided inside the one surface side of the outer wall portion. The operator according to Claim 1 or 2.

4. The operator includes the light source unit provided below the inclined surface, wherein the reflection unit reflects a part of the light from the incident light source unit in an axial direction orthogonal to the radial direction of the operation unit. The operator according to Claim 1 or 2.

5. The reflection unit is provided with a concavo-convex surface subjected to embossing. The operator according to Claim 1 or 2.

6. An inclination angle of the reflection unit with respect to the radial direction is 45 degrees. The operator according to Claim 1 or 2.

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