LED nixie tube and electronic device

Abstract

The utility model discloses a kind of LED nixie tube and electronic equipment, it is related to nixie tube technical field, wherein, LED nixie tube includes shell, display component, bulkhead and support plate, installation cavity is formed in shell;Display component is located in installation cavity, display component includes multiple light emitting diodes, multiple light emitting diodes form preset pattern;Display component is installed on bulkhead, bulkhead is opened with air hole at corresponding each light emitting diode, support plate is connected in the cavity wall of installation cavity, bulkhead is installed on support plate, and heat dissipation channel is opened in support plate, and heat dissipation channel extends along preset pattern.The utility model is added between support plate and display component Bulkhead, bulkhead is opened with air hole at corresponding each light emitting diode, so that the heat of light emitting diode can be normally conducted to heat dissipation channel through air hole, water is directly isolated with light emitting diode contact, avoid light emitting diode being corroded and damaged by moisture.

Description

Technical Field

[0001] This utility model relates to the field of digital tube technology, and in particular to an LED digital tube and electronic device. Background Technology

[0002] An LED digital tube is a display device composed of several light-emitting diodes (LEDs) arranged in a specific structure. A common type is the 7-segment display (7 LED segments + 1 decimal point), which can display Arabic numerals and some letters. By lighting different segments, it can display the numbers "0-9" and some characters (such as A, b, C, d, E, F, etc.). It is commonly used in electronic clocks, instruments, home appliance displays, counters, and other fields.

[0003] To improve heat dissipation, existing LED digital tubes may incorporate airflow channels that connect to the LEDs to dissipate heat. However, these channels also expose the LEDs to the external environment, where moisture may enter and corrode them, thus affecting the lifespan of the LED digital tube. Utility Model Content

[0004] The main purpose of this invention is to propose an LED digital tube and electronic device, which aims to solve the problem in the prior art that moisture in the environment may enter the airflow channel and cause corrosion damage to the light-emitting diode, thus affecting the service life of the LED digital tube.

[0005] To achieve the above objectives, this utility model proposes an LED digital tube, comprising: A housing, wherein a mounting cavity is formed within the housing; A display component is located within the mounting cavity, and the display component includes a plurality of light-emitting diodes, which form a preset pattern. A water-proof plate, on which the display component is mounted, and the water-proof plate has vent holes corresponding to each of the light-emitting diodes, with a plurality of vent holes arranged in an array to cover the preset pattern; A support plate is connected to the cavity wall of the mounting cavity. A water-proof plate is installed on the support plate. A heat dissipation channel is provided in the support plate. The heat dissipation channel extends along the preset pattern. The two ends of the heat dissipation channel are a starting end and an outlet end, respectively. The starting end is located at one end of the preset pattern. The heat dissipation channel passes through the support plate and extends to the cavity wall of the mounting cavity, so that the outlet end communicates with the external environment through the heat dissipation holes on the housing.

[0006] In one embodiment, the vent is a circular hole with a diameter of 1 μm to 10 μm.

[0007] In one embodiment, the water-blocking plate is a hydrophobic microporous membrane.

[0008] In one embodiment, a first water-proof mesh is provided at the heat dissipation hole.

[0009] In one embodiment, the display assembly further includes a circuit board mounted on the support plate. Each of the light-emitting diodes is located on the side of the circuit board away from the support plate and is electrically connected to the circuit board. The side of the circuit board away from the light-emitting diodes is provided with at least two pins. One end of each pin is electrically connected to the circuit board, and the other end passes through the housing and extends out of the mounting cavity. The pins are used for electrical connection with external devices.

[0010] In one embodiment, each of the pins is covered by a waterproof rubber ring on the portion of the housing. The waterproof rubber ring includes a sleeve portion and sealing portions located at both ends of the sleeve portion. The sleeve portion is sleeved on the outside of the pin, and the two sealing portions are located inside and outside the mounting cavity, respectively, and are used to abut against the inner wall and outer wall of the housing, so as to seal the pin with the housing.

[0011] In one embodiment, a plurality of light-emitting diodes form at least two figure-eight structures, the heat dissipation channel is a continuous channel, the starting end is located at one end of one of the figure-eight structures, the heat dissipation channel is respectively wound in a serpentine manner to form a continuous heat dissipation part corresponding to each figure-eight structure, and the heat dissipation parts are interconnected.

[0012] In one embodiment, a cooling fan is provided at the starting end. The cooling fan is used to provide cooling airflow to the cooling channel. The cooling airflow enters the cooling channel from the starting end, flows through each of the cooling parts in sequence, and then flows to the external environment from the outlet end through the cooling hole.

[0013] In one embodiment, an air intake channel is also provided in the support plate. The air intake channel is located at the end of the heat dissipation channel away from the circuit board, and the air intake channel passes through the support plate and extends to the cavity wall of the mounting cavity. An air intake hole is provided in the housing corresponding to the position of the air intake channel, and a second water-proof mesh is provided at the air intake hole.

[0014] This utility model also provides an electronic device, which uses the aforementioned LED digital tube.

[0015] In this invention, a heat dissipation channel extending along the preset pattern is set at the position corresponding to the support plate. This allows the heat generated by each LED during operation to be conducted to the support plate and enter the heat dissipation channel, and then discharged to the external environment through the heat dissipation holes, thus forming a new heat dissipation path and avoiding excessive reliance on pin exhaust. Because the heat dissipation channel is arranged along the preset pattern, it closely follows the actual distribution position of each LED, ensuring that heat is introduced into the heat dissipation channel within the shortest path. This achieves targeted and rapid heat conduction, avoids excessive local temperature rise, and ensures uniform temperature distribution throughout the display component. This significantly improves the heat dissipation efficiency of the LED digital tube and reduces the risk of light decay or damage caused by heat accumulation. Furthermore, by adding a water-insulating plate between the support plate and the display component, and opening vents at the corresponding LEDs, the heat from the LEDs can be normally conducted to the heat dissipation channel through the vents. The array of vents forming the preset pattern also improves heat conduction efficiency. Simultaneously, the small size of the vents prevents water from directly contacting the LEDs while maintaining normal heat conduction, avoiding corrosion damage and extending the lifespan of the LED digital tube. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 A cross-sectional structural diagram of an LED digital tube provided in an embodiment of the present invention; Figure 2 A schematic diagram of the structure of the LED digital tube display component, water-proof plate, and support plate provided in an embodiment of the present utility model; Figure 3 The images show a left and right view of the housing of an LED digital tube according to an embodiment of the present invention.

[0018] Explanation of icon numbers: 100. LED digital tube; 1. Housing; 11. Mounting cavity; 12. Upper shell; 13. Lower shell; 14. Display window; 15. Heat dissipation hole; 16. First water-proof mesh; 2. Display component; 21. Light-emitting diode; 22. Circuit board; 23. Pin; 3. Support plate; 31. Heat dissipation channel; 32. Starting end; 33. Air outlet end; 34. Heat dissipation part; 35. Air inlet channel; 36. Air inlet hole; 37. Second water-proof mesh; 4. Cooling fan; 5. Waterproof plate; 51. Vent hole; 6. Waterproof rubber ring; 61. Sleeving part; 62. Sealing part.

[0019] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0022] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0023] To improve heat dissipation, existing LED digital tubes may incorporate airflow channels that connect to the LEDs to dissipate heat. However, these channels also expose the LEDs to the external environment, where moisture may enter and corrode them, thus affecting the lifespan of the LED digital tube.

[0024] To solve the above problems, this utility model proposes an LED digital tube 100.

[0025] Please combine Figures 1 to 3 The LED digital tube 100 of this embodiment includes a housing 1, a display component 2, a water-insulating plate 5, and a support plate 3. A mounting cavity 11 is formed inside the housing 1. The display component 2 is located inside the mounting cavity 11 and includes a plurality of light-emitting diodes 21. The plurality of light-emitting diodes 21 form a preset pattern. The display component 2 is mounted on the water-insulating plate 5. The water-insulating plate 5 has vent holes 51 corresponding to each light-emitting diode. The plurality of vent holes 51 are arranged in an array to cover the preset pattern. The support plate 3 is connected to the cavity wall of the mounting cavity 11. The water-insulating plate 5 is mounted on the support plate 3. A heat dissipation channel 31 is formed inside the support plate 3. The heat dissipation channel 31 extends along the preset pattern. The two ends of the heat dissipation channel 31 are a starting end 32 and an outlet end 33, respectively. The starting end 32 is located at one end of the preset pattern. The heat dissipation channel 31 passes through the support plate 3 and extends to the cavity wall of the mounting cavity 11 so that the outlet end 33 communicates with the external environment through the heat dissipation holes on the housing 1.

[0026] In the technical solution of this utility model, by setting a heat dissipation channel 31 extending along the preset pattern at the position corresponding to the preset pattern on the support plate 3, the heat generated by each light-emitting diode 21 during operation can be conducted to the support plate 3 nearby and enter the heat dissipation channel 31, and then discharged to the external environment through the heat dissipation hole, thereby forming a new heat dissipation path and avoiding excessive reliance on the pin 23 for heat dissipation. Because the heat dissipation channel 31 is arranged along a preset pattern, the channel can closely fit the actual distribution position of each light-emitting diode 21, ensuring that heat is introduced into the heat dissipation channel 31 in the shortest path, achieving targeted and rapid heat conduction, avoiding excessive local temperature rise, and ensuring uniform temperature distribution of the entire display component 2. This significantly improves the heat dissipation efficiency of the LED digital tube 100 and reduces the risk of device light decay or damage caused by heat accumulation. At the same time, by adding a water-proof plate 5 between the support plate 3 and the display component 2, and by opening vent holes 51 at the corresponding light-emitting diodes 21 through the water-proof plate 5, the heat of the light-emitting diodes 21 can be normally conducted into the heat dissipation channel 31 through the vent holes 51. The array arrangement of the vent holes 51 to form a preset pattern can also improve the heat conduction efficiency. At the same time, the small size of the vent holes 51 can prevent water from directly contacting the light-emitting diodes 21 on the basis of normal heat conduction, avoiding the light-emitting diodes 21 from being corroded and damaged by moisture, and extending the service life of the LED digital tube 100.

[0027] In one embodiment, the vent 51 is a circular hole with a diameter of 1 μm to 10 μm.

[0028] Since the vent 51 is a round hole, it can maintain smooth airflow while avoiding airflow turbulence caused by irregular hole shape, thereby improving the efficiency of heat conduction to the heat dissipation channel 31. At the same time, the diameter of the vent 51 is limited to the range of 1μm to 10μm. On the one hand, the vent diameter within this range can ensure the smooth flow of air molecules, so that the heat generated by the light-emitting diode 21 during operation can be discharged in time through the vent 51 without affecting the overall heat dissipation effect. On the other hand, the vent diameter within this range is much smaller than the diameter of a water droplet, which can effectively prevent liquid water from seeping into the circuit board 22 or the light-emitting diode 21 through the vent 51. Thus, without affecting the airflow and heat dissipation, waterproofing and heat dissipation are achieved, which greatly improves the reliability and service life of the LED digital tube 100.

[0029] In one embodiment, the water-blocking plate 5 is a hydrophobic microporous membrane.

[0030] The hydrophobic properties and microporous structure of the material itself significantly improve the ability to block liquid water: the hydrophobic microporous membrane can use capillary inlet pressure and surface hydrophobicity to prevent water droplets or splashes from seeping into the circuit board 22 and light-emitting diode 21 along the vent 51, while allowing air to flow smoothly through the micropores driven by the cooling fan 4.

[0031] In one embodiment, a first water-proof mesh 16 is provided at the heat dissipation hole 15.

[0032] A first water-proof mesh 16 is provided at the heat dissipation hole 15. The first water-proof mesh 16 can form a protective barrier between the heat dissipation hole 15 and the external environment. When there are water droplets, rain or splashing water in the external environment, the first water-proof mesh 16 can effectively prevent liquid water from directly entering the heat dissipation channel 31 through the heat dissipation hole 15, thereby preventing water from entering the mounting cavity 11 along the heat dissipation airflow and contacting the circuit board 22 or the light-emitting diode 21, causing corrosion damage.

[0033] In one embodiment, the display component 2 further includes a circuit board 22, which is mounted on a support plate 3. Each light-emitting diode 21 is located on the side of the circuit board 22 away from the support plate 3 and is electrically connected to the circuit board 22.

[0034] The heat from each LED 21 can be evenly conducted to the support plate 3 through the circuit board 22, and then discharged through the heat dissipation channel 31 extending along the preset pattern. This effectively increases the heat conduction area and path length, reduces the formation of local hot spots, and improves the overall heat dissipation efficiency. At the same time, since the circuit board 22 separates the LED 21 from the support plate 3, the installation position of the LED 21 can be optimized to avoid heat accumulation caused by direct contact, thereby further reducing the risk of device light decay or damage caused by heat accumulation. Meanwhile, the sealed dustproof effect of the housing 1 is still maintained, achieving an optimized effect that balances dustproof and efficient heat dissipation.

[0035] In one embodiment, the circuit board 22 has at least two pins 23 on the side opposite to the light-emitting diode 21. One end of the pin 23 is electrically connected to the circuit board 22, and the other end passes through the housing 1 and extends out of the mounting cavity 11. The pin 23 is used for electrical connection with external devices.

[0036] This allows the display component 2 to be conveniently and reliably electrically connected to external devices. Pin 23 can supply power to the circuit board 22 to ensure the normal operation of the light-emitting diode 21. At the same time, pin 23 can also form an additional heat conduction path for the circuit board 22, further improving the efficiency of heat transfer from the external environment of the light-emitting diode 21.

[0037] In one embodiment, each pin 23 is covered by a waterproof rubber ring 6 on the portion of the housing 1 through which it passes. The waterproof rubber ring 6 includes a sleeve portion 61 and sealing portions 62 located at both ends of the sleeve portion 61. The sleeve portion 61 is sleeved on the outside of the pin 23, and the two sealing portions 62 are located inside and outside the mounting cavity 11, respectively, and are used to abut against the inner wall and outer wall of the housing 1, so as to seal the pin 23 with the housing 1.

[0038] The waterproof rubber ring 6 is tightly fitted onto the outside of the pin 23 through the sleeve portion 61, ensuring a reliable fit between the pin 23 and the waterproof rubber ring 6, preventing moisture from seeping into the mounting cavity 11 along the gaps between the pins 23. Simultaneously, the waterproof rubber ring 6 has sealing portions 62 at both ends of the sleeve portion 61. One sealing portion 62 is located inside the mounting cavity 11 and abuts against the inner wall of the housing 1, while the other sealing portion 62 is located outside the mounting cavity 11 and abuts against the outer wall of the housing 1. This forms a sealing barrier on both the inner and outer sides of the housing 1, effectively preventing external rainwater, moisture, or dust from entering the mounting cavity 11 through the pin 23 through-holes. This ensures a dry and clean working environment for the internal circuit board 22 and the light-emitting diode 21, preventing moisture-induced short circuits or corrosion damage. Furthermore, the double sealing portion 62 design enhances the overall sealing stability, maintaining the sealing effect even when there are temperature differences or mechanical vibrations in the external environment. This significantly improves the protection level and reliability of the LED digital tube 100 in complex environments, extending its service life.

[0039] In one embodiment, a plurality of light-emitting diodes 21 form at least two figure-eight structures, the heat dissipation channel 31 is a continuous channel, the starting end 32 is located at one end of one of the figure-eight structures, the heat dissipation channel 31 is respectively wound in a serpentine manner to form a continuous heat dissipation part 34 corresponding to each figure-eight structure, and each heat dissipation part 34 is interconnected with each other.

[0040] Understandably, each heat dissipation part 34 is also arranged in a figure-eight shape, corresponding to the bottom of the figure-eight structure, and each heat dissipation part 34 is connected by a single channel, so that the entire heat dissipation channel 31 has only one continuous path, rather than multiple points connected. Through this arrangement, the heat dissipation channel 31 can tightly cover the figure-eight structure where all the light-emitting diodes 21 are located, and heat can flow continuously between each heat dissipation part 34, realizing the uniform distribution and rapid dissipation of heat from the high-temperature area to the low-temperature area. At the same time, the serpentine winding structure formed by the continuous channel increases the contact area and heat transfer path between the heat dissipation channel 31 and the heat source, significantly improving the heat dissipation efficiency, effectively avoiding the generation of local hot spots, thereby reducing the risk of light decay or damage to the light-emitting diodes 21 caused by heat accumulation.

[0041] In one embodiment, the width of the heat dissipation channel 31 is greater than the width of the light-emitting diode 21. The greater width of the heat dissipation channel 31 allows the heat dissipation portion 34 arranged along the heat dissipation channel 31 to completely cover the area where the light-emitting diode 21 is located, increasing the contact area for heat conduction and diffusion, thereby enabling the heat generated by each light-emitting diode 21 to be more fully introduced into the heat dissipation channel 31.

[0042] In one embodiment, a cooling fan 4 is provided at the starting end 32. The cooling fan 4 is used to provide cooling airflow to the cooling channel 31. The cooling airflow enters the cooling channel 31 from the starting end 32, flows through each cooling part 34 in sequence, and then flows to the external environment from the outlet end 33 through the cooling hole.

[0043] After the heat dissipation airflow enters the heat dissipation channel 31 from the starting end 32, it can flow sequentially through the figure-eight structures corresponding to the multiple heat dissipation parts 34 along the continuous channel. The heat dissipation parts 34 formed by the serpentine winding flow continuously between the figure-eight structures, ensuring that the heat is evenly carried away within the entire preset pattern range. Then, it is discharged to the external environment from the air outlet 33 through the heat dissipation holes on the housing 1. Thus, the forced convection provided by the fan enables the heat to be quickly conducted from the light-emitting diode 21 to the heat dissipation channel 31 and continuously discharged, which significantly improves the heat dissipation efficiency and effectively prevents excessive local temperature rise and heat accumulation.

[0044] In one embodiment, an air intake channel 35 is also provided in the support plate 3. The air intake channel 35 is located at the end of the heat dissipation channel 31 away from the circuit board 22. The air intake channel 35 passes through the support plate 3 and extends to the cavity wall of the mounting cavity 11. An air intake hole 36 is provided in the housing 1 corresponding to the position of the air intake channel 35. A second water-proof mesh is provided at the air intake hole 36.

[0045] An air inlet 36 is provided on the housing 1 corresponding to the air inlet channel 35, allowing external air to enter the air inlet channel 35 through the air inlet 36 and flow into the mounting cavity 11 from the air inlet channel 35. This replenishes the airflow in the heat dissipation channel 31, ensuring a continuous and sufficient airflow from the starting end 32 into the heat dissipation channel 31. This allows heat to be continuously carried away as it flows along the continuous heat dissipation channel 31 through the multiple figure-eight structures corresponding to each heat dissipation part 34, thereby further improving the overall heat dissipation efficiency and uniformly reducing the temperature of the light-emitting diode 21. A second water-proof mesh 37 is provided at the air inlet 36. This effectively blocks moisture particles, dust, and other impurities while ensuring that external air can smoothly enter the air inlet channel 35. This prevents rainwater or condensate from entering the mounting cavity 11 with the air inlet and affecting the airflow quality in the heat dissipation channel 31, ensuring that the airflow delivered by the cooling fan 4 remains dry and clean, and improving heat dissipation efficiency. At the same time, the second water-proof mesh 37, as an independent water-proof protective structure, forms a double protection with the first water-proof mesh 16 provided at the heat dissipation hole 15.

[0046] In one embodiment, the air inlet 36 and the heat dissipation hole are located at opposite end sidewalls of the housing 1.

[0047] The air inlet 36 and the heat dissipation hole are located on opposite side walls of the housing 1, thereby avoiding airflow interference caused by the air inlet and outlet being on the same side. This allows the air entering the air inlet channel 35 from the air inlet 36 to flow smoothly into the mounting cavity 11. Under the action of the cooling fan 4, the air flows along the continuous heat dissipation channel 31 through the multiple figure-eight structures corresponding to each heat dissipation part 34, and is then discharged to the external environment from the air outlet 33 through the heat dissipation hole. This ensures that the airflow is continuous and uninterrupted, carrying away the heat generated by each light-emitting diode 21.

[0048] In one embodiment, the housing 1 includes an upper housing 12 and a lower housing 13. A support plate 3 is installed on the inner wall of the lower housing 13. The upper housing 12 covers the lower housing 13 and forms a mounting cavity 11. The display component 2 is located on the side of the support plate 3 facing the upper housing 12. The upper housing 12 has a display window 14 corresponding to the position of each light-emitting diode 21.

[0049] The upper shell 12 can protect the light-emitting diode 21 from impact damage and extend its service life. On the other hand, the display window 14 will not affect the normal display function of the light-emitting diode 21.

[0050] This utility model also provides an electronic device that utilizes the aforementioned LED digital tube 100. The specific structure of the LED digital tube 100 is as described in the above embodiments. Since this bioelectric signal detection device employs all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated upon here. Specifically, the electronic device can be an elevator display screen, a bus display screen, an alarm clock, a calculator, a remote control, or other devices that require displaying simple patterns.

[0051] The above are merely optional embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made under the concept of this utility model using the contents of this utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. An LED digital tube, characterized in that, include: A housing, wherein a mounting cavity is formed within the housing; A display component is located within the mounting cavity, and the display component includes a plurality of light-emitting diodes, which form a preset pattern. A water-proof plate, on which the display component is mounted, and the water-proof plate has vent holes corresponding to each of the light-emitting diodes, with a plurality of vent holes arranged in an array to cover the preset pattern; A support plate is connected to the cavity wall of the mounting cavity. A water-proof plate is installed on the support plate. A heat dissipation channel is provided in the support plate. The heat dissipation channel extends along the preset pattern. The two ends of the heat dissipation channel are a starting end and an outlet end, respectively. The starting end is located at one end of the preset pattern. The heat dissipation channel passes through the support plate and extends to the cavity wall of the mounting cavity, so that the outlet end communicates with the external environment through the heat dissipation holes on the housing.

2. The LED digital tube as described in claim 1, characterized in that, The vent is a round hole with a diameter of 1μm to 10μm.

3. The LED digital tube as described in claim 2, characterized in that, The water-blocking plate is a hydrophobic microporous membrane.

4. The LED digital tube as described in claim 1, characterized in that, A first water-proof mesh is provided at the heat dissipation hole.

5. The LED digital tube as described in claim 1, characterized in that, The display assembly also includes a circuit board mounted on the support plate. Each of the light-emitting diodes is located on the side of the circuit board away from the support plate and is electrically connected to the circuit board. The side of the circuit board away from the light-emitting diodes is provided with at least two pins. One end of each pin is electrically connected to the circuit board, and the other end passes through the housing and extends out of the mounting cavity. The pins are used for electrical connection with external devices.

6. The LED digital tube as described in claim 5, characterized in that, Each of the pins is fitted with a waterproof rubber ring on the portion of the housing. The waterproof rubber ring includes a sleeve portion and sealing portions located at both ends of the sleeve portion. The sleeve portion is fitted over the pin, and the two sealing portions are located inside and outside the mounting cavity, respectively, and are used to abut against the inner and outer walls of the housing, so as to seal the pin with the housing.

7. The LED digital tube as described in claim 5, characterized in that, The plurality of light-emitting diodes form at least two figure-eight structures. The heat dissipation channel is a continuous channel. The starting end is located at one end of one of the figure-eight structures. The heat dissipation channel is wound in a serpentine manner to form a continuous heat dissipation part corresponding to each figure-eight structure, and the heat dissipation parts are interconnected.

8. The LED digital tube as described in claim 7, characterized in that, A cooling fan is provided at the starting end. The cooling fan is used to provide cooling airflow to the cooling channel. The cooling airflow enters the cooling channel from the starting end, flows through each of the cooling parts in sequence, and then flows out of the outlet end through the cooling hole to the external environment.

9. The LED digital tube as described in claim 8, characterized in that, An air intake channel is also provided in the support plate. The air intake channel is located at the end of the heat dissipation channel away from the circuit board. The air intake channel passes through the support plate and extends to the cavity wall of the mounting cavity. An air intake hole is provided in the housing corresponding to the position of the air intake channel. A second water-proof mesh is provided at the air intake hole.

10. An electronic device, characterized in that, The electronic device uses an LED digital tube as described in any one of claims 1 to 9.

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