20cm long-distance inductive control LED (light-emitting diode) module
By employing a blocking design combining light-blocking foam and a windowed display film in the LED module, along with infrared light blocking, the problems of false triggering and insufficient distance in wave sensing were solved, enabling 20cm long-distance wave control.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAMEN ZETTLER ELECTRONICS CO LTD
- Filing Date
- 2025-03-24
- Publication Date
- 2026-04-28
AI Technical Summary
Existing LED modules are prone to false triggering and insufficient waving distance during the hand gesture sensing process.
The device employs a barrier design that combines a first light-blocking foam, a second light-blocking foam, and a windowed display film. By blocking the self-sensing of the infrared emitter and receiver through the light-blocking foam, and combined with the infrared band light-blocking design, it achieves a 20cm long-distance wave sensing function.
It effectively reduces false triggers, increases the distance of the hand gesture sensing, and achieves long-distance hand gesture control of 20cm.
Smart Images
Figure CN224178348U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to an LED module with 20cm long-distance sensing and control, and more particularly to a long-distance waving LED module that reduces false triggering, non-triggering, and has a large waving sensing distance. Background Technology
[0002] With the continuous development of the smart home market and consumers' pursuit of a high-quality life, various home appliances have been constantly innovating in terms of digital display modules, resulting in an increasing number of display module functions and a wide variety of display interfaces. Meanwhile, hand gesture sensing in LED display modules has become a commonly used function; however, problems such as false triggering, failure to trigger, and insufficient waving distance still occur frequently during application. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide an LED module with 20cm long-distance sensing control, which has the characteristics of reducing false triggering, non-triggering, and large hand-waving sensing distance.
[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is: a 20cm long-distance sensing and control LED module. Its innovation lies in the following: the long-distance waving LED display module, from top to bottom, includes a windowed display film, a light guide plate, a housing, and a PCB board. A motherboard connection line is provided below the housing and connected to the PCB board. The windowed display film is connected to the PCB board circuitry. A transmitter and receiver are located above the windowed display film and on its left and right sides, respectively. The transmitter and receiver are directly connected to the PCB board. Below the windowed display film, a first light-blocking foam and a second light-blocking foam are located on the left and right sides of the light guide plate. The first light-blocking foam is located directly below the transmitter, and the second light-blocking foam is located directly below the receiver.
[0005] Preferably, the outer casing is provided with a first mounting area, a second mounting area, and a third mounting area for the light guide plate, the first light-blocking foam, and the second light-blocking foam to be respectively placed, and the length of the light guide plate is 60-90% of the length of the window display film.
[0006] Preferably, the windowed display film is provided with an infrared band light-blocking screen-printed panel.
[0007] Preferably, the transmitting tube is an infrared transmitting tube, and the receiver is an infrared receiver.
[0008] Preferably, the infrared emitting tube is composed of several emitting tube units connected in series, and the power of the emitting tube unit is 150mW.
[0009] Preferably, at least one set of the transmitter and the receiver are disposed on the windowed display diaphragm.
[0010] Preferably, the windowed display film is provided with a digital tube film for digital display, the digital tube film is connected to the circuit of the PCB board, and the digital tube film is disposed above the light guide plate.
[0011] Preferably, a receiving cavity is provided directly below the digital tube film on the light guide plate, and a digital tube shell connected to the digital tube film and the PCB board is placed in the receiving cavity.
[0012] Preferably, the receiving cavity is a non-through-type upper opening structure; the receiving cavity is located at the center of the light guide plate.
[0013] Preferably, the outer casing is provided with a sealing ring located around the upper edge of the outer casing.
[0014] The advantages of this utility model are as follows: by adopting the above structure, the first light-blocking foam and the second light-blocking foam are combined with the window display film to form a barrier design. The light-blocking foam blocks the self-sensing of the infrared emitter and receiver, thereby realizing the hand gesture sensing function. The window size control of the window display film and the infrared band light-blocking design on the window display film realize the 20cm long-distance hand gesture sensing function. Attached Figure Description
[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0016] Figure 1 This is a perspective view of the LED module for 20cm long-distance sensing and control according to this utility model.
[0017] Figure 2 This is a three-dimensional exploded view of the LED module for 20cm long-distance sensing and control according to this utility model.
[0018] Figure 3 This is a schematic diagram of the structure of the LED module for 20cm long-distance sensing and control according to this utility model.
[0019] In the diagram: 1-Windowed display film, 2-Light guide plate, 3-Housing shell, 4-PCB board, 5-Main board connection cable, 6-Emitting tube, 7-Receiver, 8-First light-blocking foam, 9-Second light-blocking foam, 10-Digital tube film, 11-Receiving cavity, 12-Digital tube shell, 13-Sealing ring. Detailed Implementation
[0020] This utility model discloses a 20cm long-distance sensing and control LED module, which, from top to bottom, includes a windowed display film 1, a light guide plate 2, a housing 3, and a PCB board 4. A motherboard connection cable 5 is located below the housing 3, connecting to the PCB board. The windowed display film 1 is connected to the PCB board circuitry. A transmitter 6 and a receiver 7 are located on the windowed display film 1, positioned above it and on its left and right sides. The transmitter 6 and receiver 7 are directly connected to the PCB board. Below the windowed display film 1 are a first light-blocking foam 8 and a second light-blocking foam 9, located on the left and right sides of the light guide plate 2. The first light-blocking foam 8 is directly below the transmitter 6, and the second light-blocking foam 9 is directly below the receiver 7. By adopting the above structure and using the blocking design of the first and second light-blocking foams 8 and the windowed display film 1, the light-blocking foams block the self-sensing of the infrared transmitter and receiver, achieving the hand-gesture sensing function. The motherboard connection cable connects to the PCB board, which provides power and communication, thus enabling the hand-gesture sensing function. The window size control of the window display film 1 and the infrared band light blocking design on the window display film 1 enable the realization of the 20cm long-distance wave sensing function.
[0021] The aforementioned outer casing 3 is provided with a first mounting area, a second mounting area, and a third mounting area for the light guide plate 2, the first light-blocking foam 8, and the second light-blocking foam 9 to be respectively placed. The length of the light guide plate 2 is 60-90% of the length of the window display film 1. To further realize the long-distance hand gesture sensing function, an infrared band light-blocking screen-printed panel is provided on the window display film 1. The emitting tube 6 is an infrared emitting tube 6, and the receiver 7 is an infrared receiver 7. The infrared emitting tube 6 is composed of several emitting tube 6 units connected in series. The power of the emitting tube 6 unit is 150mW, which can extend the effective transmission distance with minimal impact on the overall power consumption and the lifespan of the emitting tube 6.
[0022] To ensure that the transmitter 6 and receiver 7 do not interfere with each other, the window display diaphragm 1 is provided with transmitter 6 and receiver 7 located above the window display diaphragm 1 and on its left and right sides. Furthermore, at least one set of transmitter 6 and receiver 7 is provided on the window display diaphragm 1.
[0023] To reduce interference from external factors, the following processing is required for transmitter 6 and receiver 7: 1. The effective level time received by transmitter 6 and receiver 7 must be greater than 10ms and not exceed 210ms; (adjust these two parameters appropriately according to the length of the window display diaphragm 1) 2. If receiver 7 receives an effective level within the time period when transmitter 6 receives an effective level, the signal is invalid; (overlapping of signal reception time between transmitter 6 and receiver 7 is not allowed) 3. Within the effective level time of transmitter 6 and receiver 7, the number of waveform glitches on one side of receiver 7 must be less than 3; the total number of glitches on both sides must be less than 5; 4. The effective level time received by transmitter 6 and receiver 7 should be less than 3 times the effective level time on the left side; the same applies to the right side (waving is a uniform process).
[0024] To facilitate independent digital display, a digital tube diaphragm 10 for digital display is provided on the windowed display diaphragm 1. The digital tube diaphragm 10 is connected to the PCB board circuitry and is positioned above the light guide plate 2. A receiving cavity 11 is provided directly below the digital tube diaphragm 10 on the light guide plate 2. A digital tube shell 12, which is connected to both the digital tube diaphragm 10 and the PCB board, is placed inside the receiving cavity 11. The receiving cavity 11 is a non-through, top-opening structure and is located at the center of the light guide plate 2. To prevent dust from entering the housing 3, a sealing ring 13 is provided around the upper edge of the housing 3.
[0025] The above embodiments merely illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.
Claims
1. An LED module with 20cm long-distance sensing and control, characterized in that: The 20cm long-distance sensing and control LED module includes, from top to bottom, a windowed display film, a light guide plate, a housing, and a PCB board. A motherboard connection line is located below the housing and connected to the PCB board. The windowed display film is connected to the PCB board circuitry. A transmitter and a receiver are located on the windowed display film, positioned above and to the left and right of the film. The transmitter and receiver are directly connected to the PCB board. Below the windowed display film are a first light-blocking foam and a second light-blocking foam, located to the left and right of the light guide plate. The first light-blocking foam is directly below the transmitter, and the second light-blocking foam is directly below the receiver.
2. The LED module with 20cm long-distance sensing control as described in claim 1, characterized in that: The outer casing is provided with a first mounting area, a second mounting area, and a third mounting area for inserting the light guide plate, the first light-blocking foam, and the second light-blocking foam, respectively. The length of the light guide plate is 60-90% of the length of the window display film.
3. The LED module with 20cm long-distance sensing and control as described in claim 1, characterized in that: The windowed display film is equipped with an infrared band light-blocking screen-printed panel.
4. The LED module with 20cm long-distance sensing and control as described in claim 1, characterized in that: The transmitting tube is an infrared transmitting tube, and the receiver is an infrared receiver.
5. The LED module with 20cm long-distance sensing control as described in claim 4, characterized in that: The infrared emitting tube is composed of several emitting tube units connected in series, and the power of each emitting tube unit is 150mW.
6. The LED module with 20cm long-distance sensing and control as described in claim 1, characterized in that: At least one set of the transmitter and receiver is provided on the windowed display diaphragm.
7. The LED module with 20cm long-distance sensing control as described in claim 1, characterized in that: The windowed display film is provided with a digital tube film for digital display, the digital tube film is connected to the circuit of the PCB board, and the digital tube film is disposed above the light guide plate.
8. The LED module with 20cm long-distance sensing control as described in claim 7, characterized in that: A receiving cavity is provided directly below the digital tube film on the light guide plate, and a digital tube shell connected to the digital tube film and the PCB board is placed in the receiving cavity.
9. The LED module with 20cm long-distance sensing control as described in claim 8, characterized in that: The cavity is a non-through-type upper opening structure; the cavity is located at the center of the light guide plate.
10. The LED module with 20cm long-distance sensing and control as described in claim 1, characterized in that: The outer casing is provided with a sealing ring located around the upper edge of the outer casing.