Color film screen knob

Abstract

This utility model discloses a color film screen knob, including a PCB motherboard and an encoder. The encoder has a hollow structure and is mounted on the PCB motherboard. A knob assembly that can rotate around the encoder is disposed on the outside of the encoder. The knob assembly has a receiving cavity with a top opening. The receiving cavity houses a knob display module mounted on the encoder. The knob display module includes a printed color film, a circuit board bracket, and a circuit board arranged sequentially from top to bottom. Multiple sets of SMD LEDs are distributed circumferentially at intervals on the upper surface of the circuit board. The circuit board, SMD LEDs, and the encoder are all electrically connected to the PCB motherboard. This utility model combines SMD LEDs with a printed color film to achieve a high-quality color display effect, meeting the usage scenarios of knobs with screens in home appliances with moderate interaction requirements.

Description

Technical Field

[0001] This utility model belongs to the field of rotary switch technology, specifically a color screen rotary knob. Background Technology

[0002] Encoder knobs with integrated displays combine the physical operation of a knob with the intuitive feedback of a screen, and are widely used in smart homes, automotive central control systems, audio equipment, industrial control, and other fields. Currently, the displays in knobs mainly adopt the following types:

[0003] 1. TFT-LCD can achieve full-color and high-resolution display operation, but TFT-LCD has a high manufacturing cost, and secondly, when displaying different images, it needs to constantly refresh the pixel state, so the power consumption will increase relatively.

[0004] 2. LED digital tubes have the advantages of extremely low cost and high brightness, but the display range is limited and they cannot display letters, symbols or other information. Moreover, when the information to be displayed is too complex, multiple LED digital tubes need to be cascaded, which is quite troublesome to use.

[0005] 3. E-Ink has advantages such as ultra-low power consumption and sunlight visibility, but it refreshes relatively slowly when displaying different images, and it is only available in black and white or three colors, which is relatively limited in color.

[0006] In view of the shortcomings of the above-mentioned knobs in actual use, a color filter screen knob is proposed. Utility Model Content

[0007] The purpose of this utility model is to provide a color screen knob in order to solve the problems mentioned above.

[0008] The technical solution adopted by this utility model is as follows: A color filter screen knob includes a PCB motherboard and an encoder. The encoder has a hollow structure and is mounted on the PCB motherboard. A knob assembly that can rotate around the encoder is provided on the outside of the encoder. The knob assembly has a receiving cavity with a top opening. The receiving cavity contains a knob display module mounted on the encoder. The knob display module includes a printed color filter, a circuit board support, and a circuit board arranged sequentially from top to bottom. Multiple sets of SMD LEDs are distributed circumferentially on the upper surface of the circuit board. The circuit board, SMD LEDs, and the encoder are all electrically connected to the PCB motherboard. The PCB motherboard receives signals from the encoder and sends corresponding control commands to the corresponding SMD LEDs according to the identified signals. The SMD LEDs perform corresponding operations according to the control commands.

[0009] In a preferred embodiment, the circuit board support has a plurality of light-transmitting cavities extending circumferentially, and the plurality of light-transmitting cavities are arranged in a one-to-one correspondence with a plurality of sets of SMD LEDs.

[0010] In a preferred embodiment, the bottom of the circuit board support is recessed to form a mounting cavity for receiving the circuit board, the circuit board has a plurality of through holes along the circumference, and the circuit board support is provided with hooks that pass through the through holes and are engaged with the bottom surface of the circuit board.

[0011] In a preferred embodiment, the knob display module further includes an inner housing, the bottom of which is fixedly mounted on the inner ring surface of the encoder. The inner housing has a second receiving cavity with a top opening, and the printed color film and the circuit board bracket are both installed in the second receiving cavity.

[0012] In a preferred embodiment, the printed color film is bonded to the circuit board support by an adhesive, and a pattern is printed on the top of the printed color film.

[0013] In a preferred embodiment, a glass panel is adhered to the top of the printed color film, and both the glass panel and the printed color film are arranged in a circular plate structure.

[0014] In a preferred embodiment, the knob assembly includes a decorative housing and a knob base. The knob base has a mounting hole at its center that mates with the outer ring surface of the encoder. The decorative housing covers the knob base and is snapped together by multiple sets of circumferentially arranged snap fasteners.

[0015] In a preferred embodiment, the decorative outer shell is generally in the form of a circular ring structure.

[0016] In summary, due to the adoption of the above technical solutions, the beneficial effects of this utility model are as follows: SMD LEDs are combined with high-resolution printed color films as the display elements of the knob. SMD LEDs are small in size and have high brightness. When combined with printed color films, they can achieve high-quality color display effects. At the same time, with the help of the real-time linkage design of the encoder, PCB motherboard and circuit board, dynamic switching interactive feedback can be realized to meet the usage scenarios of knobs with screens in household appliances with medium demand. Attached Figure Description

[0017] Figure 1 This is an exploded three-dimensional structural diagram of the entire utility model;

[0018] Figure 2 This is a schematic diagram of the semi-sectional three-dimensional structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the overall planar structure of this utility model;

[0020] Figure 4 This is a three-dimensional structural diagram of the circuit board in this utility model.

[0021] Marked in the image:

[0022] 100 - Color filter screen knob; 110 - Receiving cavity;

[0023] 11-Glass panel;

[0024] 12-Printed color film;

[0025] 13-Circuit board support, 131-Light-transmitting cavity;

[0026] 14-Circuit board, 141-SMD LED, 142-Through hole;

[0027] 15 - Decorative casing;

[0028] 16-Inner shell;

[0029] 17-Knob base;

[0030] 18-encoder;

[0031] 19-PCB motherboard. Detailed Implementation

[0032] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0033] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0035] Reference Figure 1-4A color filter screen knob 100 includes a PCB motherboard 19 and an encoder 18. The encoder 18 has a hollow structure and is mounted on the PCB motherboard 19. A knob assembly that can rotate around the encoder 18 is provided on its outer side. The knob assembly has a receiving cavity 110 with a top opening. The receiving cavity 110 contains a knob display module mounted on the encoder 18. The knob display module includes a printed color filter 12, a circuit board support 13, and a circuit board 14 arranged sequentially from top to bottom. The printed color filter 12 has a pattern printed on its top. Multiple sets of SMD LEDs 141 (surface mount LEDs) are distributed circumferentially on the upper surface of the circuit board 14. The circuit board 14, SMD LEDs 141, and encoder 18 are all electrically connected to the PCB motherboard 19. The PCB motherboard 19 receives signals from the encoder 18 and sends corresponding control commands to the corresponding SMD LEDs 141 according to the recognized signals. The SMD LEDs 141 perform corresponding operations according to the control commands. The knob display module as a whole uses a combination of SMD LEDs 141 and high-resolution printed color filter 12 to achieve display operation. The LED141 is small in size and has high brightness. When combined with the (high resolution) printed color film 12, it can achieve a high-quality full-color display effect. Moreover, different patterns can be printed on different positions of the printed color film according to different application scenarios, making it more applicable to a wider range of scenarios. Furthermore, when displaying different graphics, the switching speed is faster and the power consumption is lower.

[0036] In addition, by leveraging the real-time linkage design of encoder 18, PCB motherboard 19, circuit board 14 and SMD LED141, dynamic switching interactive feedback can be achieved. During the rotation of the knob, patterns in different directions can be lit and displayed sequentially, which can meet the intelligent dynamic interaction effect between humans and machines and meet the usage scenarios of knobs with screens on household appliances with medium demand.

[0037] It should be noted that the above electrical connection methods and the specific structure of encoder 18 are all existing and well-known technologies, and the specific structure and circuit will not be described in detail here.

[0038] In this embodiment, refer to Figure 1 As shown, multiple light-transmitting cavities 131 are circumferentially opened on the circuit board support 13. The multiple light-transmitting cavities 131 are arranged one-to-one with multiple sets of SMD LEDs 141. The multiple light-transmitting cavities 131 can be separated by a partition formed in the middle of the circuit board support 13. On the one hand, it can achieve the effect of light focusing and improve the brightness of the display. On the other hand, it can avoid the effect of light leakage and ensure the overall aesthetics.

[0039] In this embodiment, refer to Figure 1As shown, the bottom of the circuit board support 13 is recessed inward to form a mounting cavity for accommodating the circuit board 14. The circuit board 14 has multiple through holes 142 circumferentially formed. The circuit board support 13 has hooks (not shown in the figure) that pass through the through holes 142 and are engaged with the bottom surface of the circuit board 14. When assembling the circuit board support 13 and the circuit board 14, the combination operation of the circuit board support 13 and the circuit board 14 can be achieved directly by using the cooperation of the hooks and the through holes 142. Compared with the traditional screw fastening, the assembly is simpler and more convenient. Moreover, assembling the circuit board support 13 on the outside of the circuit board 14 can not only locate the position of the circuit board 14, but also protect the circuit board 14. The number of hooks is preferably three. Of course, in other embodiments, it can also be four, five or even more, which is not limited here.

[0040] In this embodiment, refer to Figure 1 and Figure 2 As shown, the knob display module also includes an inner housing 16. The bottom of the inner housing 16 is fixedly mounted on the inner ring surface of the encoder 18. The inner housing 16 has a second receiving cavity with a top opening. The printed color film 12 and the circuit board support 13 are both installed in the second receiving cavity. The printed color film 12 is bonded to the circuit board support 13 with an adhesive. A glass panel 11 is bonded to the top of the printed color film 12. Both the glass panel 11 and the printed color film 12 are arranged in a circular plate structure. The knob display module can serve as a display function and also as an auxiliary guide and positioning function for the knob assembly. The adhesive used is a transparent adhesive, and the glass panel 11 is preferably made of transparent glass.

[0041] In this embodiment, refer to Figure 1 , Figure 2 and Figure 3 As shown, the knob assembly includes a decorative housing 15 and a knob base 17. The knob base 17 has a mounting hole at its center that mates with the outer ring surface of the encoder 18. The decorative housing 15 covers the knob base 17 and is fastened together by multiple sets of circumferentially arranged snap-fit ​​adapters. The decorative housing 15 has an overall ring-shaped structure. The snap-fit ​​structure is a commonly used assembly structure between existing housings. The specific shape and how to achieve the assembly will not be described in detail here. Of course, in other embodiments, the two can also be combined together by other locking methods such as screws.

[0042] In summary, the overall design uses SMD LED141 combined with printed color film 12 as the display element for the knob, which can achieve a high-quality color display effect. At the same time, with the linkage and cooperation of encoder 18, PCB motherboard 19 and circuit board 14, dynamic switching interactive feedback can be achieved to meet the usage scenarios of knobs with screens in household appliances with moderate needs.

[0043] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A color filter screen knob, comprising a PCB motherboard and an encoder, characterized in that, The encoder has a hollow structure and is mounted on the PCB motherboard. A rotary knob assembly that can rotate around the encoder is provided on the outside of the encoder. The rotary knob assembly has a receiving cavity with an opening at the top. The receiving cavity contains a rotary knob display module mounted on the encoder. The rotary knob display module includes a printed color film, a circuit board bracket, and a circuit board arranged sequentially from top to bottom. The upper surface of the circuit board has multiple sets of SMD LEDs spaced circumferentially. The circuit board, SMD LEDs, and the encoder are all electrically connected to the PCB motherboard. The PCB motherboard receives signals from the encoder and sends corresponding control commands to the corresponding SMD LEDs based on the identified signals. The SMD LEDs perform corresponding operations according to the control commands.

2. The color filter screen knob as described in claim 1, characterized in that: The circuit board support has multiple light-transmitting cavities extending circumferentially, and each of the multiple light-transmitting cavities corresponds to one of the multiple sets of SMD LEDs.

3. The color filter screen knob as described in claim 2, characterized in that: The bottom of the circuit board support is recessed inward to form a mounting cavity for receiving the circuit board. The circuit board has multiple through holes along the circumference. The circuit board support is provided with hooks that pass through the through holes and are engaged with the bottom surface of the circuit board.

4. The color filter screen knob as described in claim 1, characterized in that: The knob display module also includes an inner housing, the bottom of which is fixedly mounted on the inner ring surface of the encoder. The inner housing has a second receiving cavity with a top opening, and the printed color film and the circuit board bracket are both installed in the second receiving cavity.

5. The color filter screen knob as described in claim 4, characterized in that: The printed color film is bonded to the circuit board bracket by an adhesive, and a pattern is printed on the top of the printed color film.

6. The color filter screen knob as described in claim 5, characterized in that: A glass panel is adhered to the top of the printed color film, and both the glass panel and the printed color film are arranged in a circular plate structure.

7. The color filter screen knob as described in claim 1, characterized in that: The knob assembly includes a decorative housing and a knob base. The knob base has a mounting hole at its center that mates with the outer ring surface of the encoder. The decorative housing covers the knob base and is snapped together by multiple sets of circumferentially arranged buckles.

8. The color filter screen knob as described in claim 7, characterized in that: The decorative outer shell has an overall ring-shaped structure.

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