A luminous piano key structure

Abstract

The invention discloses a luminous piano key structure, comprising a PCB board, a luminous structure and a light-guiding keyboard, wherein the luminous structure is mounted on the PCB board, the light-guiding keyboard comprises a piano key and a light-guiding column, a light-guiding groove is arranged on the piano key, the light-guiding column is mounted in the light-guiding groove, the installation position of the luminous structure corresponds to the light-guiding column, and the side of the luminous structure close to the light-guiding column is a luminous surface; the structure is simple and the manufacturing cost is low; the light-guiding structure is arranged on the upper surface of the piano key, so as to increase the bright visual effect of the piano key, and the light-guiding performance is better, so that the brightness is more uniform.

Description

Technical Field

[0001] The invention belongs to the technical field of piano musical instruments, and in particular relates to a luminous piano key structure. Background Art

[0002] At present, the light-transmitting structure on the existing electronic keyboard buttons is generally to directly install LED lights on the bottom of the transparent or translucent button cover. Such a structure not only has poor light transmission effect, but also has serious light crosstalk. There are also some button light-transmitting structures on the market that use transparent materials and opaque materials to make buttons with light-transmitting effects through two-color injection molding. Although this light-transmitting structure has a good light transmission effect, the light is still emitted from the bottom of the button, and there will be losses in the process of light diffusion upwards. The light on the upper surface of the button is weak, resulting in uneven light on the button.

[0003] Therefore, it is necessary to improve the light-transmitting structure of the existing electronic piano buttons to solve the above-mentioned technical problems. Summary of the invention

[0004] The purpose of the present invention is to provide a technical solution for a luminous piano key structure to address the deficiencies in the prior art. The structure is simple and the production cost is low. The light-guiding structure is arranged on the upper surface of the keys, which can increase the bright visual effect of the keys, and the light-guiding performance is better, making the brightness more uniform.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A light-emitting piano key structure, characterized in that it includes a PCB board, a light-emitting structure and a light-guiding keyboard, the light-emitting structure is installed on the PCB board, the light-guiding keyboard includes a piano key and a light-guiding column, the piano key is provided with a light-guiding groove, the light-guiding column is installed in the light-guiding groove, the installation position of the light-emitting structure corresponds to the light-guiding column, and the side of the light-emitting structure close to the light-guiding column is a light-emitting surface; the PCB board is a circuit board of the light-emitting structure, the PCB board is provided with power by a battery, the light-emitting structure can emit light of a single color or multiple colors, each PCB board is provided with a plurality of light-emitting structures, a single light-emitting structure can transmit the emitted light to the light-guiding keyboard, so that the light-guiding keyboard generates light, since there is no other obstruction above the light-guiding column, the light can be well preserved and displayed, and a good visual effect is produced, the light-emitting structure can transmit the light from the side of the light-guiding column to the light-guiding column at an angle of 180°, so that the light-guiding column has a good light-guiding performance. The light-emitting structure can be a light-emitting diode, LED lamp bead, etc., wherein the bottom of the light-emitting structure is fixedly connected to the PCB board, the side of the light-emitting structure facing the key is the light-emitting surface, and the light guide column is fixedly connected to the key. The connection between the two can be by dispensing glue, threaded connection or snap connection, etc. The shape of the light guide column adapts to the shape of the key, and the preferred shape is a shape that is thick at the top and thin around the edges.

[0007] Further, the light-emitting structure includes a first light-emitting element and a second light-emitting element, which are respectively mounted on the upper and lower sides of the PCB board, and the PCB board is horizontally mounted, and the first light-emitting element and the second light-emitting element are side-emitting LED lamp beads; or the light-emitting structure includes a third light-emitting element, which is mounted on the PCB board, and the PCB board is vertically mounted, and the third light-emitting element is a front-emitting LED lamp bead;

[0008] Since the black keys are positioned higher than the white keys when the keys are installed, the first light-emitting element and the second light-emitting element are disposed at the upper and lower ends of the PCB board, so as to better match the installation heights of the black keys and the white keys. Since the side of the light-emitting structure close to the light guide column is the light-emitting surface, and the first light-emitting element and the second light-emitting element use side-emitting LED lamp beads, which can just meet the direction requirements of the light-emitting surface, the use of the third light-emitting element is another installation situation of the present application. At this time, the PCB board is installed vertically, and the side on which the third light-emitting element is installed faces the light guide column. By arranging the third light-emitting elements in two rows above and below or arranging them in one row, they are aligned with the corresponding black and white key positions, and the use of forward-emitting LED lamp beads makes the side close to the light guide column the light-emitting surface. By changing the installation direction of the PCB board, LED lamp beads with different light-emitting modes are selected, so that both the side-emitting LED lamp beads and the front-emitting LED lamp beads can emit light within a 180-degree range on the side of the light guide column. The light-emitting structure in this structure can be a constantly lit structure or a dynamic light-emitting structure. Since each key has a separate light-emitting structure corresponding to it, a sensing device can also be provided in this structure for use with the key. When the key is pressed, the corresponding light-emitting structure emits light, which can achieve a highlighting effect. It is often used in teaching activities, and the use of LED lamp beads is a preferred embodiment of the present invention. Since the LED lamp beads can display a variety of different colors, it can achieve a better color visual effect.

[0009] Furthermore, the piano keys are made of ABS plastic material; the ABS plastic material of the piano keys has good light transmittance, and the keyboard shell made of ABS plastic material also has good light transmittance. Light can be transmitted from the light guide column to the entire keyboard, making the entire keyboard emit light.

[0010] Furthermore, the keys include black keys and white keys, the installation height of the black keys is higher than the installation height of the white keys, the installation height of the black keys matches the installation height of the first light-emitting element, and the installation height of the white keys matches the installation height of the second light-emitting element; the first light-emitting element corresponds to the black keys, and the second light-emitting element corresponds to the white keys. In the present invention, a total of twenty-nine keys are arranged, including seventeen white keys and twelve black keys, containing two full octave ranges and half an octave range, which can meet the playing needs.

[0011] Furthermore, the light guide column includes a light guide plate and a receiving plate. The receiving plate and the light guide plate are an integrated structure. The receiving plate is vertically arranged below one end of the light guide plate. The receiving plate receives the light emitted by the light-emitting structure from the side and diffuses it onto the light guide plate.

[0012] Furthermore, a protrusion is provided at the bottom of the receiving plate, a depression is provided below the side of the key, and the protrusion is installed in the depression; the protrusion is installed in the depression to fix the receiving plate end and the key.

[0013] Furthermore, a claw portion is provided at one end of the light guide column away from the receiving plate, and a clamping portion cooperating with the claw portion is provided at the corresponding position of the key. The claw portion is clamped in the clamping portion, which is a preferred embodiment of the present invention; the light guide column and the other end of the key are fixed by the clamping connection between the claw portion and the clamping portion.

[0014] Furthermore, the surface of the light guide column close to the light-emitting structure is the incident surface, and the incident surface is a glossy surface. The surfaces of the light guide column other than the incident surface are all frosted structures, and the bottom surface of the light guide column is provided with striped protrusions; the incident surface adopts a glossy surface with better light transmittance, while the other surfaces adopt a frosted surface to reduce the divergence of light and prevent light interference between two adjacent keys. The striped protrusions arranged on the bottom surface of the light guide column can be in the form of horizontal stripes, vertical stripes, a combination of horizontal and vertical stripes, or oblique stripes, so that the light in the light guide column is more uniform, avoiding the situation where the two ends are bright and the middle is dark, and enhancing the light guiding effect, among which the light guiding effect of the horizontal stripes is stronger.

[0015] Furthermore, the light guide column is made of transparent acrylic material, and a light guide ink coating or reflective paper is arranged between the bottom of the light guide column and the piano keys, and a nano grating film is embedded on the surface of the light guide column; the light guide ink coating and reflective paper can be used to reflect light, and the nano grating film has good transparency and brightness, and is soft in texture, and is a good coating material.

[0016] Furthermore, the light guide column is a light guide filler, and the light guide filler is a mixture of one or more of TPU rubber, PC board and silicone; the side of the light guide filler is set at one end of the protruding key, and the light in the light-emitting structure is directly transmitted to the light guide filler.

[0017] The present invention also provides an electronic keyboard, which includes a luminous key structure, an upper cover, and a bottom shell. A mounting groove is formed in the bottom shell, and the luminous key structure is mounted in the mounting groove. The upper cover is located above the luminous key structure and is connected to the bottom shell.

[0018] The present invention has the following beneficial effects due to the adoption of the above technical solution:

[0019] The PCB board in the present invention is a circuit board with a light-emitting structure. The PCB board is powered by a battery. The light-emitting structure can emit light of a single color or multiple colors. Multiple light-emitting structures are arranged on each PCB board. A single light-emitting structure can transmit the emitted light to the light-guiding keyboard, thereby making the light-guiding keyboard generate light. Since there is no other obstruction above the light-guiding column, the light can be better preserved and displayed, producing a good visual effect. The light-emitting structure can transmit the light from the side of the light-guiding column to the light-guiding column at an angle of 180°, thereby making the light-guiding column have good light-guiding performance.

[0020] The invention has a simple structure and low manufacturing cost. The light-guiding structure is arranged on the upper surface of the keys, which can increase the bright visual effect of the keys and has better light-guiding performance, making the brightness more uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below in conjunction with the accompanying drawings:

[0022] Figure 1 It is a structural schematic diagram of a luminous piano key structure in the present invention;

[0023] Figure 2 This is a schematic diagram of the connection between the PCB board and the light-emitting structure in the present invention;

[0024] Figure 3 It is a structural schematic diagram of the light guide column in the present invention;

[0025] Figure 4 for Figure 3 A schematic diagram of the structure enlargement in the middle;

[0026] Figure 5 for Figure 3 A magnified schematic diagram of the structure at B in the middle;

[0027] Figure 6 is a schematic diagram of the back side of the light guide column in the present invention;

[0028] Figure 7 It is a structural schematic diagram of the piano keys in the present invention;

[0029] Figure 8 for Figure 7 Enlarged schematic diagram of the structure at point C in the middle.

[0030] In the figure: 1-PCB board; 2-light-emitting structure; 3-light-guiding keyboard; 4-key; 5-light-guiding column; 6-light-guiding groove; 7-first light-emitting element; 8-second light-emitting element; 9-clamping part; 10-black key; 11-white key; 12-incident surface; 13-striped protrusion; 14-light-guiding plate; 15-receiving plate; 16-protruding block; 17-depression; 18-claw part. DETAILED DESCRIPTION

[0031] Here, exemplary embodiments will be described in detail, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are merely examples of devices and methods consistent with some aspects of the present invention as detailed in the appended claims.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In the absence of conflict, the technical features of the present invention can be combined with each other.

[0034] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0035] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplicity and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides various specific examples of processes and materials, but those of ordinary skill in the art can appreciate the application of other processes and / or the use of other materials.

[0036] like Figures 1 to 8 As shown, it is the first embodiment of the present invention: a light-emitting piano key structure, comprising a PCB board 1, a light-emitting structure 2 and a light-guiding keyboard 3, the light-emitting structure 2 is installed on the PCB board 1, the light-guiding keyboard 3 comprises a piano key 4 and a light-guiding column 5, the piano key 4 is provided with a light-guiding groove 6, the light-guiding column 5 is installed in the light-guiding groove 6, the installation position of the light-emitting structure 2 corresponds to the light-guiding column 5, and the side of the light-emitting structure 2 close to the light-guiding column 5 is the light-emitting surface; the PCB board 1 is the circuit board of the light-emitting structure 2, the PCB board 1 is provided with electric energy by a battery, the light-emitting structure 2 can emit a single color or multiple colors of light, each PCB board 1 is provided with a plurality of light-emitting structures 2, a single light-emitting structure 2 can transmit the emitted light to the light-guiding keyboard 3, so that the light-guiding keyboard 3 generates light, since there is no other obstruction above the light-guiding column 5, the light can be well preserved and displayed, and a good visual effect is produced, the light-emitting structure 2 can transmit the light from the side of the light-guiding column 5 to the light-guiding column 5 at an angle of 180°, so that the light-guiding column 5 has a good light-guiding performance. The light-emitting structure 2 can be a light-emitting diode, an LED lamp bead, etc., wherein the bottom of the light-emitting structure 2 is fixedly connected to the PCB board 1, the side of the light-emitting structure 2 facing the key 4 is the light-emitting surface, and the light guide column 5 is fixedly connected to the key 4. The connection between the two can be by dispensing glue, threaded connection or snap connection, etc. The shape of the light guide column 5 adapts to the shape of the key 4, and the preferred shape is a shape that is thick at the top and thin around the edges.

[0037] The light-emitting structure 2 includes a first light-emitting element 7 and a second light-emitting element 8, which are respectively mounted on the upper and lower sides of the PCB board 1, and the PCB board 1 is horizontally mounted. The first light-emitting element 7 and the second light-emitting element 8 are side-emitting LED lamp beads; or the light-emitting structure 2 includes a third light-emitting element, which is mounted on the PCB board 1, and the PCB board 1 is vertically mounted. The third light-emitting element is a front-emitting LED lamp bead;

[0038] Since the position of the black key 10 is higher than the white key 11 when the key 4 is installed, the first light-emitting element 7 and the second light-emitting element 8 are arranged at the upper and lower ends of the PCB board 1, so as to better match the installation height of the black key 10 and the white key 11. Since the side of the light-emitting structure 2 close to the light guide column 5 is the light-emitting surface, and the first light-emitting element 7 and the second light-emitting element 8 use side-emitting LED lamp beads to just meet the direction requirements of the light-emitting surface, the use of a third light-emitting element is another installation situation of the present application. At this time, the PCB board 1 is installed vertically, and the side on which the third light-emitting element is installed faces the light guide column 5. The third light-emitting elements are arranged in two rows above and below or concentrated in one row to be aligned with the corresponding black key 10 and white key 11 positions, and the use of forward-emitting LED lamp beads just makes the side close to the light guide column 5 One side is a light-emitting surface; by changing the installation direction of the PCB board 1, LED lamp beads with different light-emitting modes are selected, so that both the side-emitting LED lamp beads and the front-emitting LED lamp beads can emit light within a 180-degree range on the side of the light guide column 5. The light-emitting structure 2 in this structure can be a constantly lit structure or a dynamic light-emitting mode. Since each key 4 has a separate light-emitting structure 2 corresponding to it, a sensing device can also be set in this structure to be used in conjunction with the key 4. When the key 4 is pressed, the corresponding light-emitting structure 2 emits light, which can achieve a highlighting effect and is mostly used in teaching activities. The use of LED lamp beads is a preferred embodiment of the present invention. Since the LED lamp beads can display a variety of different colors, they can achieve a better color visual effect.

[0039] The keys 4 are made of ABS plastic material; the keys 4 are made of ABS plastic material with good light transmittance, and the shell of the keys 4 made of ABS plastic material also has good light transmittance. Light can be transmitted from the light guide column 5 to the entire key 4, making the entire key 4 emit light.

[0040] The keys 4 include black keys 10 and white keys 11, the installation height of the black keys 10 is higher than the installation height of the white keys 11, the installation height of the black keys 10 matches the installation height of the first light-emitting element 7, and the installation height of the white keys 11 matches the installation height of the second light-emitting element 8; the first light-emitting element 7 corresponds to the black keys 10, and the second light-emitting element 8 corresponds to the white keys 11. In the present invention, a total of twenty-nine keys 4 are arranged, including seventeen white keys 11 and twelve black keys 10, containing two complete octave ranges and half an octave range, which can meet the playing requirements.

[0041] The light guide column 5 includes a light guide plate 14 and a receiving plate 15. The receiving plate 15 and the light guide plate 14 are an integrated structure. The receiving plate 15 is vertically arranged below one end of the light guide plate 14. The receiving plate 15 receives the light emitted by the light emitting structure 2 from the side and diffuses it onto the light guide plate 14.

[0042] A protrusion 16 is provided at the bottom of the receiving plate 15 , and a depression 17 is provided below the side of the key 4 , in which the protrusion 16 is installed; the protrusion 16 is installed in the depression 17 to fix the end of the receiving plate 15 and the key 4 .

[0043] A claw portion 18 is provided at one end of the light guide column 5 away from the receiving plate 15, and a clamping portion 9 cooperating with the claw portion 18 is provided at the corresponding position of the key 4. The claw portion 18 is clamped in the clamping portion 9, which is a preferred embodiment of the present invention; the light guide column 5 and the other end of the key 4 are fixed by the clamping of the claw portion 18 and the clamping portion 9.

[0044] The surface of the light guide column 5 close to the light emitting structure 2 is the incident surface 12, and the incident surface 12 is a glossy surface. The surfaces of the light guide column 5 except the incident surface 12 are all frosted structures. The bottom surface of the light guide column 5 is provided with striped protrusions 13; the incident surface 12 adopts a glossy surface with better light transmittance, while the other surfaces adopt frosted surfaces to reduce the divergence of light and prevent light interference between two adjacent keys 4. The striped protrusions 13 arranged on the bottom surface of the light guide column 5 can be in the form of horizontal stripes, vertical stripes, a combination of horizontal and vertical stripes, or oblique stripes, so that the light in the light guide column 5 is more uniform, avoiding the situation where the two ends are bright and the middle is dark, and enhancing the light guiding effect, among which the light guiding effect of the horizontal stripes is stronger.

[0045] Embodiment 2: A light-guiding column 5 of a light-emitting piano key structure is made of transparent acrylic material. A light-guiding ink coating or reflective paper is provided between the bottom of the light-guiding column 5 and the piano key 4. A nano-grating film is embedded on the surface of the light-guiding column 5. The light-guiding ink coating and reflective paper are used to reflect light. The nano-grating film has good transparency and brightness, and is soft in texture, and is a good coating material. Among them, for a light-guiding column 5, it can use a light-guiding ink layer alone, or a nano-grating film alone, or both at the same time. The light-guiding column 5 of the light-emitting piano key structure can also be made of composite materials, such as a mixture of acrylic and other materials, a compound, etc. It should be understood that as long as the material of the light-guiding column can guide light, it should be used in the embodiments of the present invention.

[0046] Embodiment 3: A light guide column 5 of a luminous key structure is a light guide filler, which is a mixture of one or more of TPU rubber, PC board and silicone; the side of the light guide filler is arranged at one end of the protruding key 4, and the light in the luminous structure 2 is directly transmitted to the light guide filler.

[0047] In some embodiments, the light guide column 5 may not be located in the key 4, but may be located below the key 4, for example, the upper part is an ordinary key 4, and the lower part of the key 4 is the light guide column 5; the light guide column 5 may also be located above the key 4, the lower part is the key 4 holder, and the upper part of the key 4 holder is the light guide column 5.

[0048] The present invention has the following beneficial effects due to the adoption of the above technical solution:

[0049] In the present invention, the PCB board 1 is a circuit board of the light-emitting structure 2. The PCB board 1 is powered by a battery. The light-emitting structure 2 can emit light of a single color or multiple colors. Multiple light-emitting structures 2 are arranged on each PCB board 1. A single light-emitting structure 2 can transmit the emitted light to the light-guiding keyboard 3, thereby making the light-guiding keyboard 3 generate light. Since there is no other obstruction above the light-guiding column 5, the light can be better preserved and displayed, producing a good visual effect. The light-emitting structure 2 can transmit the light from the side of the light-guiding column 5 to the light-guiding column 5 at an angle of 180°, thereby making the light-guiding column 5 have good light-guiding performance.

[0050] The present invention also provides an electronic keyboard, which includes a luminous key 4 structure, an upper cover, and a bottom shell. An installation groove is formed in the bottom shell, and the luminous key 4 structure is installed in the installation groove. The upper cover is located above the luminous key 4 structure and is connected to the above-mentioned bottom shell.

[0051] The present invention has a simple structure and low manufacturing cost. The light-guiding structure is arranged on the upper surface of the keys 4, which can increase the bright visual effect of the keys 4, and has better light-guiding performance, making the brightness more uniform.

[0052] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention to achieve basically the same technical effects are all included in the protection scope of the present invention.

Claims

1. A luminous piano key structure, Features: It includes a PCB board, a light-emitting structure and a light-guiding keyboard, the light-emitting structure is installed on the PCB board, the light-guiding keyboard includes a piano key and a light-guiding column, the piano key is provided with a light-guiding groove, the light-guiding column is installed in the light-guiding groove, the installation position of the light-emitting structure corresponds to the light-guiding column, the side of the light-emitting structure close to the light-guiding column is a light-emitting surface, the light-emitting structure is located on the outer side of the key, the light-guiding column includes a light-guiding plate and a receiving plate, the receiving plate and the light-guiding plate are an integrated structure, the receiving plate is vertically arranged below one end of the light-guiding plate, the receiving plate receives the light emitted by the light-emitting structure and diffuses it onto the light-guiding plate.

2. A luminous piano key structure according to claim 1, Features: The light-emitting structure comprises a first light-emitting element and a second light-emitting element, wherein the first light-emitting element and the second light-emitting element are respectively mounted on the upper and lower sides of the PCB board, the PCB board is mounted horizontally, and the first light-emitting element and the second light-emitting element are side-emitting LED lamp beads; Or the light-emitting structure includes a third light-emitting element, the third light-emitting element is mounted on the PCB board, the PCB board is vertically mounted, and the third light-emitting element is a front-emitting LED lamp bead.

3. A luminous piano key structure according to claim 2, Features: The piano keys include black keys and white keys, the installation height of the black keys is higher than the installation height of the white keys, the installation height of the black keys matches the installation height of the first light-emitting elements, and the installation height of the white keys matches the installation height of the second light-emitting elements.

4. The luminous piano key structure according to claim 1, Features: A protruding block is arranged at the bottom of the receiving plate, a recess is arranged below the side of the key, and the protruding block is installed in the recess.

5. The luminous piano key structure according to claim 1, Features: A claw portion is arranged at one end of the light guide column away from the receiving plate, and a clamping portion cooperating with the claw portion is arranged at a corresponding position of the key, and the claw portion is clamped in the clamping portion.

6. The luminous piano key structure according to claim 1, Features: The surface of the light guide column close to the light emitting structure is an incident surface, the incident surface is a light surface, the surfaces of the light guide column except the incident surface are all frosted surface structures, and the bottom surface of the light guide column is provided with striped protrusions.

7. The luminous piano key structure according to claim 1, Features: The light guide column is made of transparent acrylic material, a light guide ink layer or reflective paper is arranged between the bottom of the light guide column and the piano keys, and a nano grating film is embedded in the outer surface of the light guide column.

8. The luminous piano key structure according to claim 1, Features: The light guide column is a light guide filler, and the light guide filler is a mixture of one or more of TPU rubber, PC board and silica gel.

9. An electronic keyboard, Features: The electronic piano comprises the luminous key structure as claimed in claim 1, an upper cover and a bottom shell, wherein a mounting groove is formed in the bottom shell, the luminous key structure is mounted in the mounting groove, and the upper cover is located above the luminous key structure and connected to the bottom shell.

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