Knob controller

Abstract

The utility model provides a knob controller, which belongs to the technical field of electric appliance switches and comprises a plurality of LED lamps, an encoder, a light guide structure and a shading structure which are mounted on a circuit board of an electric appliance, the encoder comprises an inner ring, and the inner ring is sleeved on the periphery of all the LED lamps and connected to the circuit board; the light guide structure comprises a light guide ring inserted and connected to the inner side of the inner ring, the light guide ring comprises a first end face and a second end face which are oppositely arranged, the first end face is provided with a light guide part, the second end face is a light emitting face for diffuse reflection, and the light guide part is arranged corresponding to the light emitting face and used for refracting light of the corresponding LED lamp to the light emitting face; the light shielding structure sleeves the periphery of the light emitting surface and is used for preventing light scattering. According to the utility model, the brightness of light can be improved, the light can be uniformly displayed, and the user experience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical switches, in particular to a knob controller. Background Art

[0002] Currently, smart kitchen appliances are mostly operated through touch, gestures, voice, and apps. With the increasing performance of smart devices, knobs with integrated screens are emerging as a novel control method, allowing users to select and confirm function settings simply by rotating them. However, existing simple button controls no longer meet the high-end demands of smart devices. Although some knob controllers feature illuminated rings and panels at the bottom, these types of knob controllers often produce diffuse and uneven lighting, resulting in a poor user experience. Utility Model Content

[0003] In order to achieve the purpose of this utility model, this utility model adopts the following technical solutions:

[0004] The utility model provides a knob controller. The knob controller includes:

[0005] Multiple LED lights are installed on the circuit board of the appliance;

[0006] An encoder, comprising an inner ring, wherein the inner ring is sleeved around the outer periphery of all the LED lights and connected to the circuit board;

[0007] A light guide structure, comprising a light guide ring inserted into and connected to the inner side of the inner ring, the light guide ring comprising a first end face and a second end face arranged opposite to each other, the first end face being provided with a light guide portion, the second end face being a light exiting surface for diffuse reflection, the light guide portion being arranged corresponding to the light exiting surface and being used to refract light from the corresponding LED lamp to the light exiting surface;

[0008] The light-shielding structure is sleeved on the periphery of the light-emitting surface to prevent light from scattering.

[0009] According to an embodiment of the present invention, each of the light guiding portions includes a plurality of arc-shaped protruding blocks, and the plurality of arc-shaped protruding blocks are distributed at equal intervals along the first end surface.

[0010] According to one embodiment of the present invention, the arc-shaped protrusion block is semi-cylindrical and the arc surface is oriented in the same direction as the first end face, the central axes of multiple arc-shaped protrusion blocks are coplanar with the first end face, and the central axes of multiple arc-shaped protrusion blocks all intersect at the center of the first end face.

[0011] According to one embodiment of the present invention, the radius of the arc-shaped protruding block is 0.5 mm, and the included angle between the central axes of any two adjacent arc-shaped protruding blocks is a, wherein 5°≤a≤15°.

[0012] According to one embodiment of the present invention, the light guide ring includes a light guide ring body inserted into the inner ring, the circumferential surface of the light guide ring body on the side away from the LED lamp is provided with a flange extending along its radial direction, the outer periphery of the flange is connected to the light guide ring, the outer wall surface of the light guide ring is provided with a frosted layer, and the upper wall surface of the light guide ring forms the light emitting surface.

[0013] According to one embodiment of the present invention, the inner circumference of the inner ring is provided with a plurality of inner ring guide grooves arranged at intervals, and the outer circumference of the light guide ring body is provided with light guide ring guide protrusions matching the inner ring guide grooves;

[0014] Among them, a light guide ring guide protrusion is provided with a light guide ring limiting groove, the inner ring guide groove is provided with an inner ring limiting protrusion matching the light guide ring limiting groove, and the inner ring limiting protrusion is inserted into the light guide ring limiting groove.

[0015] According to one embodiment of the present invention, a light guide ring buckle is provided on the outer periphery of the light guide ring, a clamping block matching the light guide ring buckle is provided on the inner periphery of the inner ring, and the light guide ring buckle is clamped to the clamping block.

[0016] According to one embodiment of the present invention, the knob controller further includes:

[0017] A switch button is connected to the circuit board and is located on the inner periphery of the inner ring. A pressing block corresponding to the switch button is provided on the inner periphery of the light guide ring, and the pressing block abuts against the upper surface of the switch button.

[0018] The presser is inserted into and detachably connected to the inner periphery of the light guide ring and abuts against a side of the pressing block away from the switch button.

[0019] According to one embodiment of the present invention, the light guide ring is connected to a light guide ring claw, the presser is provided with a presser buckle corresponding to the light guide ring claw, and the presser buckle is clamped to the light guide ring claw.

[0020] According to one embodiment of the present invention, the knob controller further includes a display panel, which is covered on a side of the shading structure and the light guide ring close to the light emitting surface, and the display panel is provided with a light emitting area corresponding to the light emitting surface.

[0021] According to an embodiment of the present invention, the encoder further comprises an outer ring rotatably connected to the outer periphery of the inner ring, the outer periphery of the outer ring is sleeved with a knob, and the knob is clamped to the outer ring.

[0022] According to one embodiment of the present invention, the inner circumference of the knob is provided with a first limiting protrusion for circumferential limiting and a second limiting protrusion for axial limiting, the outer wall surface of the outer ring is provided with an outer ring limiting groove matching the first limiting protrusion, and the first limiting protrusion is inserted into the outer ring limiting groove; the bottom of the second limiting protrusion abuts against the top of the outer ring to limit the relative position of the knob and the outer ring in the axial direction.

[0023] According to one embodiment of the present invention, the light shielding structure includes a light shielding ring, the top of the knob is provided with a step outward along its circumference, and the light shielding ring is installed between the light guide ring and the step;

[0024] Wherein, the step is provided with a limiting ring for limiting the position of the light-shielding ring, and the light-shielding ring is sleeved on the outer circumference of the limiting ring.

[0025] Compared with the prior art, the present invention has the following advantages or beneficial effects:

[0026] The utility model can refract the light of the LED lamp onto the light guide ring through the light guide structure and the light shading structure, and then diffusely reflect the light from the light emitting surface of the light guide ring. The light shading ring can restrain the light from scattering, so that the light display is uniform and the user experience is improved.

[0027] The plurality of arc-shaped protruding blocks can improve the light refraction effect, making the light on the display panel more uniform and brighter.

[0028] By assembling the circuit board, the encoder, the light shielding ring, the light guide ring, the presser and the display panel into a whole, the knob controller has a cool lighting feedback effect, and the color, brightness and breathing state can be adjusted, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The above and other features and advantages of the present invention will become more apparent by describing in detail example embodiments thereof with reference to the accompanying drawings.

[0030] Figure 1 is a schematic diagram of a knob controller according to an exemplary embodiment.

[0031] Figure 2 is a cross-sectional view of a knob controller according to an exemplary embodiment.

[0032] Figure 3 is an exploded view of a knob controller board according to an exemplary embodiment.

[0033] Figure 4 is a schematic diagram showing a light guide structure according to an exemplary embodiment.

[0034] Figure 5 FIG. 1 is a bottom view of a light guide structure according to an exemplary embodiment.

[0035] Figure 6 is a schematic diagram of an arc-shaped protruding block according to an exemplary embodiment.

[0036] 1. LED light; 10. Circuit board;

[0037] 2. Encoder; 21. Inner ring; 211. Inner ring guide groove; 212. Inner ring limit protrusion; 213. Clamping block; 22. Outer ring; 221. Outer ring limit groove; 222. Outer ring buckle;

[0038] 3. Light guide structure; 31. Light guide ring; 310. Light emitting surface; 311. Light guide ring body; 3111. Light guide ring guide protrusion; 3112. Light guide ring limiting groove; 312. Flanged edge; 313. Light guide ring; 314. Light guide ring buckle; 315. Pressing block; 316. Light guide ring claw; 32. Light guide portion; 321. Arc-shaped protrusion;

[0039] 4. Shading structure; 41. Shading ring;

[0040] 5. Switch button;

[0041] 6. Presser; 61. Presser buckle;

[0042] 7. Knob; 71. First limiting protrusion; 72. Second limiting protrusion; 73. Step; 731. Limiting ring; 74. Knob claw;

[0043] 8. Display panel; 81. Luminous area. DETAILED DESCRIPTION

[0044] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art. Like reference numerals in the figures represent like or similar structures, and thus their detailed description will be omitted.

[0045] The terms "a", "an", "the", "" are used to indicate that there are one or more elements / components / etc.; the terms "including" and "having" are used to express open-ended inclusion and mean that there may be additional elements / components / etc. in addition to the listed elements / components / etc.

[0046] A knob controller according to an embodiment of the present invention, such as Figure 1-6The knob 7 controller shown includes a plurality of LED lamps 1, an encoder 2, a light guide structure 3 and a light shading structure 4 mounted on a circuit board 10 of an electrical appliance. The encoder 2 includes an inner ring 21. The light guide structure 3 includes a light guide ring 31 inserted into and connected to the inner side of the inner ring 21. The light guide ring 31 includes a first end face and a second end face that are arranged opposite to each other. The inner ring 21 is sleeved on the outer periphery of all LED lamps 1 and is connected to the circuit board 10. The first end face is provided with a light guide portion 32, and the second end face is a light emitting surface 310 for diffuse reflection. The light guide portion 32 is arranged corresponding to the light emitting surface 310 and is used to refract the light of the corresponding LED lamp 1 to the light emitting surface 310. The light shading structure 4 is sleeved on the outer periphery of the light emitting surface 310 to prevent light scattering. In this application, the first end face is the end face of the light guide ring 31 close to each LED lamp 1, that is, the end face of the light guide ring 31 close to each LED lamp 1. Figure 1-2 The bottom surface of the second end surface is the end surface of the light guide ring 31 away from each LED lamp 1. Figure 1-2 Each light guide portion 32 is aligned with its corresponding LED lamp 1. The light generated by the LED lamp 1 is refracted onto the light-emitting surface 310 through the overall structure of the light guide portion 32 and the light guide ring 31. The light-emitting surface 310 is used for diffuse reflection, so that the light is diffusely reflected and emitted from the light-emitting surface 310. The shading structure 4 prevents light from scattering. This application can enhance the light refraction effect, make the light more uniform and bright, and improve the lighting effect of the LED lamp 1.

[0047] In a preferred embodiment of the present invention, Figure 1-6 Each light guide 32 shown includes multiple arcuate protrusions 321, which are evenly spaced along the first end surface. In other words, multiple arcuate protrusions 321 are positioned above each LED lamp 1. These arcuate protrusions 321 are connected to the corresponding annular surface at the bottom of the light guide ring 31 and spaced at regular intervals. This design enhances the light refraction effect, resulting in a more uniform and brighter light.

[0048] In a preferred embodiment of the present invention, Figure 1-6 The arc-shaped raised block 321 shown is semi-cylindrical and the arc surface is oriented in the same direction as the first end face. The central axis of the multiple arc-shaped raised blocks 321 is coplanar with the first end face, and the central axis of the multiple arc-shaped raised blocks 321 all intersect at the center of the first end face. In the present application, the arc-shaped raised block 321 is a semi-cylindrical shape that bulges downward. The central axis of any two adjacent arc-shaped raised blocks 321 intersect and are coplanar, and the central axis of the multiple arc-shaped raised blocks 321 all pass through the center of the first end face. The width of the first end face, that is, the thickness of the light guide ring body 311, is equal to the axial height of the arc-shaped raised block 321. In addition, the multiple arc-shaped raised blocks 321 on the same LED lamp 1 are evenly distributed with the center of the first end face as the center of the circle and at a certain central angle. This design not only allows the light to be refracted to the light-emitting surface 310, but also improves the light refraction effect and achieves the effect of focusing.

[0049] In a preferred embodiment of the present invention, Figure 1-6 The angle between the central axes of the two adjacent arc-shaped protrusions 321 shown is a, wherein 5°≤a≤15°. Since the arc-shaped protrusion 321 is a semi-cylinder, the longitudinal section of the arc-shaped protrusion 321 is a semicircular. In the present application, the radius of the arc-shaped protrusion 321 is 0.5 mm, and the angle between the central axes of the two adjacent arc-shaped protrusions 321 is a, wherein 5°≤a≤15°, and a is preferably 8°, 10° and 12°. In particular, when a=10°, each arc-shaped protrusion 321 is aligned with the corresponding LED lamp 1, which can make the light of the display panel 8 more uniform and bright. It should be noted that "adjacent" in the present application refers to multiple arc-shaped protrusions 321 located on the same LED lamp 1. The angles of the multiple arc-shaped protrusions 321 on different LED lamps 1 are related to the position of the LED lamp 1, and this is not limited in the present application.

[0050] In a preferred embodiment of the present invention, Figure 1-6 The light guide ring 31 shown includes a light guide ring body 311 inserted into the inner ring 21. The circumferential surface of the light guide ring body 311 on the side away from the LED lamp 1 is provided with a flange 312 extending radially thereof. The outer periphery of the flange 312 is connected to a light guide ring 313. The outer wall surface of the light guide ring 313 is provided with a frosted layer, and the upper wall surface of the light guide ring 313 forms a light-emitting surface 310. In the present application, the light guide ring body 311, flange 312, and light guide ring 313 are integrally formed and are all made of transparent plastic. The outer wall surface of the light guide ring 313 is provided with a frosted layer to cause diffuse reflection of light. In this way, the light from the LED lamp 1 is irradiated by the arc-shaped protrusion 321, and then passes through the arc-shaped protrusion 321 to the light guide ring 31, flange 312, and light guide ring 313, and is diffusely reflected from the outer surface of the light guide ring 313 and the light-emitting surface 310.

[0051] In a preferred embodiment of the present invention, Figure 1-6The inner circumference of the inner ring 21 is shown as having multiple spaced-apart inner ring guide grooves 211. The outer circumference of the light guide ring body 311 is provided with light guide ring guide protrusions 3111 that match the inner ring guide grooves 211. One of the light guide ring guide protrusions 3111 is provided with a light guide ring stopper groove 3112. The inner ring guide groove 211 is provided with an inner ring stopper protrusion 212 that matches the light guide ring stopper groove 3112, which is inserted into the light guide ring stopper groove 3112. As the light guide ring 31 moves toward the interior of the inner ring 21, the light guide ring guide protrusions 3111 insert into the inner ring guide grooves 211, connecting the light guide ring 31 to the inner ring 21 and guiding its direction and range of movement. Furthermore, the connection between the inner ring stopper protrusions 212 and the light guide ring stopper grooves 3112 ensures that each light guide portion 32 on the light guide ring 31 corresponds to a corresponding LED lamp 1, ensuring optimal lighting effects.

[0052] In a preferred embodiment of the present invention, Figure 1-6 The light guide ring 31 is shown with a light guide ring buckle 314 on its outer circumference, and a block 213 matching the light guide ring buckle 314 is provided on the inner circumference of the inner ring 21. The light guide ring buckle 314 is engaged with the block 213. The engagement of the light guide ring buckle 314 with the block 213 not only secures the light guide ring 31 and the inner ring 21, but also defines the axial position of the light guide ring 31 and the inner ring 21.

[0053] In a preferred embodiment of the present invention, Figure 1-6 The illustrated knob controller also includes a switch button 5 and a presser 6. The switch button 5 is connected to the circuit board 10 and located on the inner circumference of the inner ring 21. A press block 315 corresponding to the switch button 5 is provided on the inner circumference of the light guide ring 31. The press block 315 abuts the upper surface of the switch button 5. The presser 6 is inserted into and detachably connected to the inner circumference of the light guide ring 31, and abuts the side of the press block 315 away from the switch button 5. The combination of the presser 6, the press block 315, and the switch button 5 creates a cool lighting feedback effect with adjustable color, brightness, and breathing state, enhancing the user experience.

[0054] In a preferred embodiment of the present invention, Figure 1-6 The inner periphery of the light guide ring 31 is connected to the light guide ring claw 316. The presser 6 is provided with a presser buckle 61 corresponding to the light guide ring claw 316. The presser buckle 61 is engaged with the light guide ring claw 316. The presser buckle 61 and the light guide ring claw 316 are used to fix the presser 6 and the light guide ring 31.

[0055] In a preferred embodiment of the present invention, Figure 1-6The knob controller shown also includes a display panel 8, which is covered on the side of the light shielding structure 4 and the light guide ring 31 close to the light emitting surface 310. The display panel 8 is provided with a light emitting area 81 corresponding to the light emitting surface 310. Figure 1-3 The display panel 8 is shown covering the top of the light shielding structure 4, the light guide ring 31, and the presser 6. The light-emitting area 81 of the display panel 8 is aligned with the light-emitting surface 310 of the light guide ring 31. Double-sided tape is used to bond the display panel 8 to the light shielding ring 41, completing the assembly of the knob. When switching lights or selecting functions, the display panel 8 can be pressed to confirm the selection.

[0056] In a preferred embodiment of the present invention, Figure 1-6 The encoder 2 shown also includes an outer ring 22 rotatably connected to the outer circumference of the inner ring 21. The outer circumference of the outer ring 22 is sleeved with a knob 7, which is engaged with the outer ring 22. Knob 7 is provided with a knob claw 74 on its outer circumference, and outer ring 22 is provided with an outer ring buckle 222 that matches the knob claw 74. Knob claw 74 engages with outer ring buckle 222 to assemble the knob 7 and outer ring 22. Rotating knob 7 operates encoder 2, and function selection is achieved through rotation. The simple structure and assembly of the knob 7 reduce production and manufacturing costs. Furthermore, the knob 7 contains no electrical components, eliminating electrical risks.

[0057] In a preferred embodiment of the present invention, Figure 1-6 The inner circumference of the knob 7 is shown as being provided with a first limiting protrusion 71 for circumferential limiting and a second limiting protrusion 72 for axial limiting. The outer wall of the outer ring 22 is provided with an outer ring limiting groove 221 that matches the first limiting protrusion 71. The first limiting protrusion 71 is inserted into the outer ring limiting groove 221; the bottom of the second limiting protrusion 72 abuts the top of the outer ring 22, thereby defining the relative axial position of the knob 7 and the outer ring 22. When the first limiting protrusion 71 is inserted into the outer ring limiting groove 221 and the bottom of the second limiting protrusion 72 abuts the top of the outer ring 22, the knob claw 74 aligns with the outer ring buckle 222, enabling a locking engagement. The first limiting protrusion 71 and the second limiting protrusion 72 respectively limit the circumferential and axial positions of the knob 7 on the outer ring 22. When the first limiting protrusion 71 and the second limiting protrusion 72 are respectively assembled in place, the knob claw 74 and the outer ring buckle 222 can be aligned and clamped, completing the assembly of the knob 7 and the encoder 2, simplifying the assembly process and improving installation efficiency.

[0058] In a preferred embodiment of the present invention, Figure 1-6The illustrated light shielding structure 4 includes a light shielding ring 41. A step 73 is provided along the circumference of the top of the knob 7. The light shielding ring 41 is mounted between the light guide ring 31 and the step 73. The step 73 is provided with a retaining ring 731 for limiting the position of the light shielding ring 41. The light shielding ring 41 is sleeved around the outer circumference of the retaining ring 731. The light shielding ring 41 has an L-shaped longitudinal cross-section and can completely surround the outer circumference of the light guide ring 313. Due to its opaque nature, the light shielding ring 41 effectively prevents light scattering, ensuring uniform illumination of the light emitting area 81 of the display panel 8. The retaining ring 731 also defines the position of the light shielding ring 41, preventing it from shifting and affecting the lighting effect.

[0059] The specific installation process is as follows:

[0060] Attach or weld the inner ring 21 of the encoder 2 to the circuit board 10, and connect multiple LED lights 1 and switch buttons 5 to the area corresponding to the inner ring 21 on the circuit board 10; insert the first limiting protrusion 71 of the knob 7 into the outer ring limiting groove 221, and the bottom of the second limiting protrusion 72 abuts against the top of the outer ring 22, and the knob claw 74 is clamped onto the outer ring buckle 222 of the encoder 2. At this point, the assembly of the knob 7 and the encoder 2 is completed.

[0061] The shading ring 41 is sleeved on the outer periphery of the limiting ring 731 and installed between the light guide ring 31 and the step 73 to realize the assembly of the light guide ring 41 and the light guide ring 31, and the light guide ring limiting groove 3112 on the light guide ring 31 is aligned with the inner ring limiting protrusion 212 on the encoder 2, so that the light guide ring buckle 314 is clamped onto the block 213 on the inner ring 21, and the pressing block 315 in the light guide ring 31 is pushed to the top surface of the switch button 5, and then the block 213 on the inner ring 21 rebounds to complete the assembly of the light guide ring 31 and the encoder 2.

[0062] Align the presser buckle 61 on the presser 6 with the light guide ring claw 316, press the presser 6 downward, the presser buckle 61 rebounds and resets to engage with the light guide ring claw 316, and the installation of the presser 6 and the encoder 2 is completed.

[0063] Align the light-emitting area 81 of the display panel 8 with the light-emitting surface 310 on the light-guiding ring 31, and use double-sided tape to bond the display panel 8 to the light-shielding ring 41 to complete the assembly of the knob controller. This application has a compact structure, is easy to assemble, and has low cost. It also adds a cool interactive and feedback effect. Because each light-guiding portion 32 is aligned with the corresponding LED light 1 on the circuit board 10, the light of the LED light 1 shines upward, passing through the arc-shaped protrusion 321 and the light-guiding ring 31, so that the light is refracted onto the light-guiding ring 313 of the light-guiding ring 31, and diffusely reflected from the light-emitting surface 310 of the frosted surface of the light-guiding ring 313. The light-shielding ring 41 prevents the light from scattering, so that the light-emitting area 81 of the display panel 8 forms a cool display light. Through the application of the above solution, a low-cost, compact, simple control method with lighting effects is realized. The light can display multiple colors, breathing display, bright and dark display, and the light is uniform and does not leak out. The control method is pressable and rotatable, providing a new control experience for kitchen appliances and electronic products.

[0064] In the embodiments of the present invention, the term "plurality" refers to two or more, unless otherwise specified. Terms such as "installed," "connected," and "fixed" should be interpreted broadly. For example, "connected" can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art will understand the specific meanings of these terms in the embodiments of the present invention based on the specific circumstances.

[0065] In the description of the embodiments of the present invention, it is necessary to understand that the terms "upper" and "lower" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the embodiments of the present invention.

[0066] Throughout this specification, terms such as "one embodiment" and "a preferred embodiment" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0067] The above is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, various modifications and variations of the present invention are possible. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A knob controller, characterized in that: include: A plurality of LED lights (1) are mounted on a circuit board (10) of an electrical appliance; An encoder (2) comprising an inner ring (21), wherein the inner ring (21) is sleeved on the outer periphery of all the LED lamps (1) and connected to the circuit board (10); A light guide structure (3) comprising a light guide ring (31) inserted into and connected to the inner side of the inner ring (21), the light guide ring (31) comprising a first end face and a second end face arranged opposite to each other, the first end face being provided with a light guide portion (32), the second end face being a light exiting surface (310) for diffuse reflection, the light guide portion (32) being arranged corresponding to the light exiting surface (310) and being used to refract light from the corresponding LED lamp (1) to the light exiting surface (310); The light-shielding structure (4) is sleeved on the outer periphery of the light-emitting surface (310) and is used to prevent light from scattering.

2. The knob controller according to claim 1, characterized in that: Each of the light guide portions (32) comprises a plurality of arc-shaped protruding blocks (321), and the plurality of arc-shaped protruding blocks (321) are distributed at equal intervals along the first end surface.

3. The knob controller according to claim 2, characterized in that: The arc-shaped protrusion block (321) is semi-cylindrical and the arc surface is oriented in the same direction as the first end surface. The central axes of the plurality of arc-shaped protrusion blocks (321) are coplanar with the first end surface, and the central axes of the plurality of arc-shaped protrusion blocks (321) all intersect at the center of the first end surface.

4. The knob controller according to claim 3, characterized in that: The included angle between the central axes of any two adjacent arc-shaped protruding blocks (321) is a, wherein 5°≤a≤15°.

5. The knob controller according to claim 3, characterized in that: The light guide ring (31) comprises a light guide ring body (311) inserted into the inner ring (21); a circumferential surface of the light guide ring body (311) on a side away from the LED lamp (1) is provided with a flange (312) extending along its radial direction; the outer periphery of the flange (312) is connected to a light guide ring (313); an outer wall surface of the light guide ring (313) is provided with a frosted layer; and an upper wall surface of the light guide ring (313) forms the light emitting surface (310).

6. The knob controller according to claim 5, characterized in that: The inner circumference of the inner ring (21) is provided with a plurality of inner ring guide grooves (211) arranged at intervals, and the outer circumference of the light guide ring body (311) is provided with light guide ring guide protrusions (3111) matching the inner ring guide grooves (211); Among them, a light guide ring guide protrusion (3111) is provided with a light guide ring limiting groove (3112), the inner ring guide groove (211) is provided with an inner ring limiting protrusion (212) matching the light guide ring limiting groove (3112), and the inner ring limiting protrusion (212) is inserted into the light guide ring limiting groove (3112).

7. The knob controller according to claim 2, characterized in that: A light guide ring buckle (314) is provided on the outer periphery of the light guide ring (31), a clamping block (213) matching the light guide ring buckle (314) is provided on the inner periphery of the inner ring (21), and the light guide ring buckle (314) is clamped to the clamping block (213).

8. The knob controller according to claim 2, characterized in that: Also includes: A switch button (5) is connected to the circuit board (10) and is located on the inner periphery of the inner ring (21); a pressing block (315) corresponding to the switch button (5) is provided on the inner periphery of the light guide ring (31), and the pressing block (315) abuts against the upper surface of the switch button (5); The presser (6) is inserted into and detachably connected to the inner periphery of the light guide ring (31), and abuts against a side of the pressing block (315) away from the switch button (5).

9. The knob controller according to claim 8, characterized in that: The light guide ring (31) is connected to a light guide ring claw (316), and the presser (6) is provided with a presser buckle (61) corresponding to the light guide ring claw (316), and the presser buckle (61) is clamped to the light guide ring claw (316).

10. The knob controller according to claim 1, characterized in that: The invention also includes a display panel (8), which is covered on the side of the shading structure (4) and the light guide ring (31) close to the light emitting surface (310), and the display panel (8) is provided with a light emitting area (81) corresponding to the light emitting surface (310).

11. The knob controller according to claim 10, characterized in that: The encoder (2) further comprises an outer ring (22) rotatably connected to the outer periphery of the inner ring (21); a knob (7) is sleeved on the outer periphery of the outer ring (22); and the knob (7) is snap-connected to the outer ring (22).

12. The knob controller according to claim 11, characterized in that: The inner circumference of the knob (7) is provided with a first limiting protrusion (71) for circumferential limiting and a second limiting protrusion (72) for axial limiting. The outer wall surface of the outer ring (22) is provided with an outer ring limiting groove (221) matching the first limiting protrusion (71), and the first limiting protrusion (71) is inserted into the outer ring limiting groove (221); the bottom of the second limiting protrusion (72) abuts against the top of the outer ring (22) to limit the relative position of the knob (7) and the outer ring (22) in the axial direction.

13. The knob controller according to claim 11, characterized in that: The light shielding structure (4) includes a light shielding ring (41); a step (73) is provided outwardly along the circumference of the top of the knob (7); and the light shielding ring (41) is installed between the light guide ring (31) and the step (73); The step (73) is provided with a limiting ring (731) for limiting the position of the light shielding ring (41), and the light shielding ring (41) is sleeved on the outer periphery of the limiting ring (731).

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