Multi-color evenly illuminated knob

Abstract

The present invention discloses a knob that emits uniform light in multiple colors. The rotary shaft is vertically arranged at the top of the knob functional component. The light guide structure is sleeved on the rotary shaft and forms a light guide reflection surface, forming a light guide reflection film angle with the horizontal plane. A panel is provided above the light guide structure, the top surface has a panel lettering area, and the bottom surface of the light guide structure has a panel lighting light guide network point. The screw cap is arranged at the top of the rotary shaft and has a mounting groove. The top has a uniform light reflection surface cone angle, and the bottom has a transparent or translucent screw cap light inlet. The light inlet area at the bottom of the light guide structure is polygonal or circular. A plurality of LED light sources of multiple colors are symmetrically arranged in the light inlet area along the circumference. The corresponding color LEDs can be driven independently and switched according to the back-end control circuit. The light guide structure can convert the horizontal incident light emitted by the LED light source into upward outgoing light, which enters the screw cap for light mixing and uniform light, and then forms a uniform light emitting surface at the top of the screw cap. The knob can emit uniform light in multiple colors, improving the recognition in complex light environments.

Description

Technical Field

[0001] The present invention relates to the technical field of display buttons, and in particular to a knob that emits light in multiple colors evenly. Background Art

[0002] Because ruggedized display button panels need to take into account both dark environments at night and strong lighting environments above the clouds, they often need to be designed with luminous buttons and knobs to ensure accurate judgment and use of buttons and knobs in complex lighting environments.

[0003] The luminous design of most knobs mainly focuses on the illumination of the characters on the panel around the knob. However, the position of the rotating knob is limited by the size of the knob and the layout space of the light source. Generally, it is difficult to adopt a luminous design, and it cannot emit light, which is not conducive to the function identification and application of the knob in complex lighting environments. Summary of the Invention

[0004] The purpose of the present invention is to provide a knob with multi-color uniform lighting, which can emit multi-color uniform light, has a good synchronous display effect, maintains the consistency of character color, and improves the recognition in complex light environments.

[0005] In order to achieve the above-mentioned purpose, the present invention provides a knob with multi-color uniform light emission, which includes a rotary cap, a rotating shaft, an LED light source, a knob functional component, a light-guiding structure and a panel. The rotating shaft is vertically arranged on the top of the knob functional component, and the knob functional component is configured to output a variable electrical signal according to the rotation of the rotating shaft to realize the knob function; the light-guiding structure is sleeved on the rotating shaft and a light-guiding reflection surface is formed near the connection between the rotating shaft and the knob functional component, and the light-guiding reflection surface forms a light-guiding reflection film angle with the horizontal plane, and the light-guiding reflection film angle is set to 0.1-90°; a panel is provided above the light-guiding structure, the top surface of the panel is formed with a panel lettering area, and the bottom surface of the light-guiding structure is formed with a surface that can match the position of the panel lettering area The board illuminates the light-guiding network points; the screw cap cover is arranged at the top of the rotating shaft and a mounting groove that can be fixedly connected to the rotating shaft is formed at the center position inside; the top of the mounting groove is formed with a uniform light reflection surface cone angle, and the cone angle is set to 0.1-180°, and the bottom of the mounting groove is formed with a transparent or translucent screw cap light inlet at a position corresponding to the light-guiding structure; wherein the light-inlet area at the bottom of the light-guiding structure is polygonal or circular, and a plurality of LED light sources of various colors are symmetrically arranged in the light-inlet area along the circumferential direction, and the corresponding color LEDs are set to be able to drive independently and switch work according to the back-end control circuit, and the light-guiding structure is set to be able to convert the horizontal incident light emitted by the LED light source into upward outgoing light, which enters the screw cap for light mixing and uniform light and then forms a uniform luminous surface at the top of the screw cap.

[0006] Preferably, the angle of the light-guiding reflective film is 45°.

[0007] Preferably, the screw cap is made of transparent or translucent resin or glass, and the top surface is sprayed with a background layer and a lettering area is formed by laser or machining.

[0008] Preferably, the outer area of ​​the screw cap is first subjected to a light-reflecting treatment and then to a light-isolating treatment to prevent external light leakage.

[0009] Preferably, a reflective layer is provided at the contact portion between the mounting groove of the screw cap and the rotating shaft and at the top thereof, so as to reflect the light from the surrounding area to the top of the screw cap to illuminate the engraved area.

[0010] Preferably, all areas of the light guide structure except the light inlet and the light outlet are subjected to internal reflection processing, wherein the light guide reflection surface adopts mirror reflection processing.

[0011] Preferably, the panel lettering area is made of transparent or translucent resin or glass, the top surface is sprayed with a background layer and the lettering area is formed by laser or machining, and part of the light emitted from the overlapping area on the light-guiding structure located below the panel lettering area is used to provide illumination for the panel lettering area.

[0012] Preferably, the panel lighting light guide dots are manufactured by laser punching or screen printing, and the dot size is 0.1-0.8 mm.

[0013] Preferably, the number of symmetrical groups of LED light sources is 1-100, and the LED array is designed based on the position of the entire light-entry area.

[0014] Preferably, multiple groups of LED light sources are configured to operate simultaneously to perform color mixing.

[0015] According to the above technical solution, the present invention is based on a symmetrical LED light-emitting group mixed light design, utilizes the light deflection of the special-shaped light-guiding structure, and matches the light-guiding rotary cap to achieve multi-color uniform illumination of the knob. At the same time, part of the light can be transmitted to the panel area around the knob in a timely manner to achieve synchronous display of the panel and rotating character lighting, keep the character color completely consistent, and improve the recognition of the knob in complex lighting environments.

[0016] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following detailed description, they are used to explain the present invention but do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 This is a schematic structural diagram of a knob with multi-color uniform light emission according to an embodiment of the present invention;

[0019] Figure 2 Schematic diagram of the LED light source layout of the light guide plate structure according to an embodiment of the present invention.

[0020] Description of Reference Numerals

[0021] 1-screw cap 2-rotating shaft

[0022] 3- LED light source 4- knob functional parts

[0023] 5-light guide structure 6-panel

[0024] 51-light guide reflective surface 52-light guide reflective film angle

[0025] 53-Panel lighting light guide network 61-Panel lettering area DETAILED DESCRIPTION

[0026] The following describes the specific embodiments of the present invention in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention.

[0027] In the present invention, unless otherwise stated, directional words such as "up, down, top, bottom" contained in the terms merely represent the orientation of the terms in normal usage, or are common names understood by those skilled in the art, and should not be regarded as limitations on the terms.

[0028] See also Figure 1The present invention provides a knob with multi-color uniform lighting, which includes a knob cap 1, a rotating shaft 2, an LED light source 3, a knob functional component 4, a light guide structure 5 and a panel 6. The rotating shaft 2 is vertically arranged on the top of the knob functional component 4, and the knob functional component 4 is configured to output a changing electrical signal according to the rotation of the rotating shaft 2 to realize the knob function; the light guide structure 5 is sleeved on the rotating shaft 2 and is formed with a light guide reflection surface 51 at a position close to the connection between the rotating shaft 2 and the knob functional component 4, and the light guide reflection surface 51 forms a light guide reflection film angle 52 with the horizontal plane, and the light guide reflection film angle 52 is set to 0.1-90 degrees; a panel 6 is provided above the light guide structure 5, and the top surface of the panel 6 is formed with a panel lettering area 61, and the bottom surface of the light guide structure 5 is formed with a position that can be aligned with the panel lettering area 61 Matching panel lighting light guide network 53; the screw cap 1 is covered on the top of the rotating shaft 2 and a mounting groove is formed at the inner center position which can be fixedly connected with the rotating shaft 2. The top of the mounting groove is formed with a uniform light reflection surface cone angle, and the cone angle is set to 0.1-180°. The bottom of the mounting groove is formed with a transparent or translucent screw cap light inlet at a position corresponding to the light guide structure 5; wherein, the light inlet area at the bottom of the light guide structure 5 is polygonal or circular, and a plurality of LED light sources 3 of various colors are symmetrically arranged in the light inlet area along the circumferential direction, and the corresponding color LEDs are set to be able to drive independently and switch work according to the back-end control circuit. The light guide structure 5 is set to be able to convert the horizontal incident light emitted by the LED light source 3 into upward outgoing light, which enters the screw cap 1 for mixing and uniform light and then forms a uniform luminous surface at the top of the screw cap 1.

[0029] Through the above technical solution, based on the symmetrical LED light-mixing design, the light deflection of the special-shaped light-guiding structure is utilized, and matched with the light-guiding rotary cap, the multi-color uniform illumination of the knob is achieved. At the same time, part of the light can be timely transmitted to the panel area around the knob, realizing the synchronous display of the panel and the rotating character lighting, keeping the character color completely consistent, and improving the recognition of the knob in complex lighting environments.

[0030] In this embodiment, in order to facilitate processing and assembly design, preferably, the light guide reflective film angle 52 is 45°.

[0031] In this embodiment, the screw cap 1 is preferably made of a transparent or translucent resin or glass, with a background coating sprayed on the top surface and the engraved area formed by laser or machining. Specifically, when engraving the top of the screw cap 1, a white or translucent coating is first sprayed, followed by an outermost background coating. The outermost background coating is then removed by laser or machining in the shape of the engraving, forming the desired engraving.

[0032] In addition, in this embodiment, it is preferred that the outer area of ​​the screw cap 1 is first subjected to a reflective treatment and then to a light-isolating treatment to prevent external light leakage. Specifically, the light-isolating treatment can be a layer of blackening, painting, or other light-isolating treatment after the reflective treatment, which can effectively prevent external light leakage.

[0033] Furthermore, the contact part between the screw cap mounting groove and the rotating shaft 2 and the top are designed to be reflective, and the reflective material can be sprayed. The uniform light reflecting surface on the top reflects the light from the surrounding to the top of the screw cap 1 to provide uniform lighting for the lettering. The cone angle of the uniform light reflecting surface on the top can be selected according to the size of the knob, screw cap and lettering.

[0034] In addition, all areas of the light guide structure 5 except the light entrance and light exit are treated with internal reflection to improve the light output efficiency, especially the light guide reflection surface 51 at the turning position needs to be treated with mirror reflection to improve the light efficiency and turning efficiency.

[0035] Similarly, the panel lettering area 61 can adopt the same design as the screw cap lettering area to maintain consistent transmittance characteristics. Specifically, the panel lettering area 61 is preferably made of transparent or translucent resin or glass, with a background layer sprayed on the top surface and the lettering area formed by laser or machining. Furthermore, the overlapping area of ​​the light guide structure 5 below the panel lettering area 61 emits a portion of light to illuminate the panel lettering area 61.

[0036] The above-mentioned panel lighting light guide dots 53 are manufactured by laser punching, screen printing, etc. The size and density of the dots are optimized and adjusted according to the density and brightness of the characters. The size of the dots is 0.1-0.8mm.

[0037] like Figure 2 As shown, the light-incoming area at the bottom of the light-guiding structure 5 can be designed as a polygon or a circle. Figure 2 As shown in Figures 2-1 and 2-2, LED light sources are set symmetrically on the corresponding polygonal edges or circles. Two LEDs of the same color can be used at the two ends of the symmetrical position, 1, 3 and 2, 4 respectively. The corresponding color LEDs can be driven independently and switched according to the back-end control circuit, thus achieving a uniform light emission design of two colors. To further improve the uniformity, the number of symmetrical LED groups can be increased, such as Figure 2 As shown in Figures 2-3, the design increases to four symmetrical groups (1 and 5, 2 and 6, 3 and 7, and 4 and 8). The LED array design for the entire light-entry area can be tailored to the light-guiding structure and LED physical dimensions. The number of LED groups can range from 1 to 100. The corresponding color LEDs continue to operate independently, while multiple groups can operate simultaneously for color mixing, achieving full coverage of common colors.

[0038] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the scope of protection of the present invention.

[0039] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0040] In addition, the various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A knob with multi-color uniform lighting, characterized in that: The multi-color uniformly luminous knob comprises a rotary cap (1), a rotating shaft (2), an LED light source (3), a knob functional component (4), a light guide structure (5) and a panel (6), wherein the rotating shaft (2) is vertically arranged on the top of the knob functional component (4), and the knob functional component (4) is configured to output a variable electrical signal according to the rotation of the rotating shaft (2) to realize the knob function; the light guide structure (5) is sleeved on the rotating shaft (2) and is formed with a light guide reflection surface (51) near the connection between the rotating shaft (2) and the knob functional component (4), and the light guide reflection surface (51) forms a light guide reflection film angle (52) with a horizontal plane, and the light guide reflection film angle (52) is set to 0.1-90°; the panel (6) is provided above the light guide structure (5), the top surface of the panel (6) is formed with a panel lettering area (61), and the bottom surface of the light guide structure (5) is formed with a light guide film angle (52) that can be aligned with the panel lettering area ( 61) panel lighting light guide points (53) with matching positions; the screw cap (1) is covered on the top of the rotating shaft (2) and a mounting groove is formed at the center position inside the screw cap, which can be matched and fixed with the rotating shaft (2); the top of the mounting groove is formed with a uniform light reflection surface cone angle, and the cone angle is set to 0.1-180 degrees; the bottom of the mounting groove is formed with a transparent or translucent screw cap light inlet at a position corresponding to the light guide structure (5); wherein the light inlet area at the bottom of the light guide structure (5) is polygonal or circular, and a plurality of LED light sources (3) of multiple colors are symmetrically arranged in the light inlet area along the circumferential direction, and LEDs of the same color are set to be able to drive independently and switch their work according to the back-end control circuit, and the light guide structure (5) is set to be able to convert the horizontal incident light emitted by the LED light source (3) into an upward outgoing light, which enters the screw cap (1) for light mixing and uniform light, and then forms a uniform light-emitting surface at the top of the screw cap (1).

2. The multi-color uniformly luminous knob according to claim 1, characterized in that: The light-guiding reflective film angle (52) is 45°.

3. The multi-color uniformly luminous knob according to claim 1, characterized in that: The screw cap (1) is made of transparent or translucent resin or glass, and a background layer is sprayed on the top surface and a lettering area is formed by laser or machining.

4. The multi-color uniformly luminous knob according to claim 3, characterized in that: The outer area of ​​the screw cap (1) is first subjected to a light-reflecting treatment and then to a light-isolating treatment to prevent external light leakage.

5. The multi-color uniformly luminous knob according to claim 4, characterized in that: A reflective layer is provided at the contact portion and top of the mounting groove of the screw cap (1) and the rotating shaft (2), for reflecting light from the surrounding area to the top of the screw cap (1) to illuminate the engraved area.

6. The multi-color uniformly luminous knob according to claim 1, characterized in that: The areas other than the light inlet and the light outlet on the light guide structure (5) are all subjected to inner light reflection treatment, wherein the light guide reflection surface (51) is subjected to mirror reflection treatment.

7. The multi-color uniformly luminous knob according to claim 1, characterized in that: The panel lettering area (61) is made of transparent or translucent resin or glass, a background layer is sprayed on the top surface and the lettering area is formed by laser or machining, and part of the light emitted from the overlapping area on the light guide structure (5) below the panel lettering area (61) is used to provide illumination for the panel lettering area (61).

8. The multi-color uniformly luminous knob according to claim 1, characterized in that: The panel lighting light guide dots (53) are manufactured by laser dotting or screen printing, and the dot size is 0.1-0.8 mm.

9. The multi-color uniformly luminous knob according to claim 1, characterized in that: The LED light sources (3) are arranged in an array design in the entire light-entry area, and the number of symmetrical groups of the LED light sources (3) is 1-100.

10. The multi-color uniformly luminous knob according to claim 9, characterized in that: Multiple groups of LED light sources (3) are configured to operate simultaneously to perform color mixing.

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