Circuit board of glow tube watch and glow tube watch
By designing the accommodating slots and pins on the circuit board of the glow tube watch, the problem of excessive watch thickness is solved, and a thinner and more beautiful watch design is achieved.
Patent Information
- Application Number
- CN202421941537.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-12
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-08-12
AI Technical Summary
The glow tube watches on the market have a large circuit board thickness, which increases the thickness of the watch, making them uncomfortable and unsightly worn.
An M-type circuit board is designed to reduce the longitudinal height of the circuit board by opening a receiving slot on the circuit board to accommodate the bottom of the glow tube, and installing pins on the circuit board to simplify the driving circuit to reduce the number of connection points.
The thinning of the circuit board is achieved, reducing the overall thickness of the watch, making the watch thinner and more beautiful, while maintaining the functional integrity of the circuit board.
Smart Images
Figure CN222939396U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of glow tube watches, in particular to a circuit board of a glow tube watch and a glow tube watch. Background Art
[0002] For the glow tube watches on the market, since a fixed model of glow tube is selected, such as the IN16 glow tube with a diameter of 13 mm and a length of 40 mm. Usually, the circuit board is located below the glow tube, and the control circuit board for driving the glow tube and responsible for timekeeping and other logic control functions usually requires a thickness of 1.6 mm. There are components with different heights on the circuit board, and general resistors and capacitors will reach a component thickness of 1.5 mm. In this case, the circuit movement of the glow tube watch will reach a thickness of 13 + 1.6 + 1.5 = 16.1 mm. Coupled with the metal thickness required for the outer shell itself, the finished product thickness will soon reach a thicker level. Usually, it will reach a dial diameter of 50 mm and a thickness of more than 16 mm, making it bulky, uncomfortable and unaesthetic to wear. Content of the Utility Model
[0003] To solve the above problems, the purpose of the utility model is to provide a circuit board of a glow tube watch and a glow tube watch.
[0004] The utility model is implemented by the following methods:
[0005] A circuit board of a glow tube watch, comprising a circuit board body and a glow tube. An installation position of the glow tube is provided on the circuit board body. A receiving groove is opened from the upper surface downward at the position where the glow tube is installed on the circuit board body. The receiving groove is used to receive a part of the glow tube, and the width of the receiving groove is smaller than the diameter of the glow tube.
[0006] Preferably, there are two receiving grooves, and there are two glow tubes. The two receiving grooves are respectively used to sink the bottom of one glow tube.
[0007] Preferably, the cross-section of the circuit board body is in the shape of M, N, T or U.
[0008] Preferably, the two glow tubes are installed in parallel with the same orientation and have a spacing greater than zero. A transformer, or a high-voltage filtering capacitor, or a button battery, or a clock chip is installed on the circuit board body between the nozzles of the two glow tubes; the two openings of the M-shaped circuit board body are located in the opposite direction of the nozzles of the glow tubes.
[0009] Preferably, a keypad or a battery is disposed in the gap between the two glow tubes on the circuit board body, or a keypad or a battery is disposed on a side of the glow tube away from the other glow tube on the circuit board body; alternatively, a keypad is disposed on a side of the glow tube away from the other glow tube on the circuit board body, and a battery is disposed on a side of the other glow tube away from the glow tube on the circuit board body; the battery and the keypad are electrically connected to the circuit board body.
[0010] Preferably, a pin simplification driving circuit is connected to one end of the glow tube away from the air nozzle, the pins of the glow tube are connected to the pin simplification driving circuit, and the pin simplification driving circuit is electrically connected to one side of the circuit board body having two openings, for series-parallel connection of the pins of the glow tube to reduce the number of pins connected to the circuit board body.
[0011] Preferably, the pin simplification driving circuit includes an anode gating power supply circuit, a cathode gating circuit and a series-parallel conversion chip. The anode pins of the two glow tubes are electrically connected to the anode gating power supply circuit, the cathode pins of the glow tube are electrically connected to the cathode gating circuit, the anode gating power supply circuit and the cathode gating circuit are electrically connected to the series-parallel conversion chip, and the series-parallel conversion chip is electrically connected to the corresponding interface of the circuit board body.
[0012] Preferably, the pin simplification driving circuit includes a series-parallel chip. The cathode pins and anode pins of the two glow tubes are connected to the corresponding pins of the series-parallel conversion chip, and the series-parallel conversion chip is electrically connected to the corresponding interface of the circuit board body.
[0013] Preferably, the pin simplification driving circuit includes a series-parallel conversion chip and an anode gating power supply circuit. The cathode pins of the two glow tubes are directly connected to the corresponding pins of the series-parallel conversion chip, the anode pins of the two glow tubes are electrically connected to the anode gating power supply circuit, the anode gating power supply circuit is electrically connected to the series-parallel conversion chip, and the series-parallel conversion chip is electrically connected to the corresponding interface of the circuit board body.
[0014] A glow tube watch includes a housing, and a circuit board of the glow tube watch as described in any one of the above is disposed in the housing.
[0015] The beneficial effects of the present utility model are as follows: The present utility model provides a circuit board for a glow tube watch. Compared with the prior art, the present utility model has at least the following technical effects: 1. By opening a receiving groove at the position of the circuit board body for installing the glow tube, the bottom area of the glow tube can be received, so that the bottom of the glow tube is sunk into the receiving groove of the circuit board body, and the longitudinal height of the circuit board body after installing the glow tube can be reduced by the depth of the receiving groove compared with the height after installing the original ordinary circuit board, which helps to make the glow tube watch thinner, and it can be realized that the overall thickness after assembling the glow tube and the circuit board body is equal to the size of the glow tube itself. 2. Two receiving grooves are provided to facilitate receiving two glow tubes, and the two are combined to display time. 3. The M-shaped circuit board body allows the glow tube to sink, so that the end of the outer edge of the glow tube far from the air nozzle is flush with the end of the circuit board body with two openings; and due to the component layout design on the M-shaped circuit main board, the higher components are placed in the middle position between the two glow tubes of the circuit board body and the gaps at the bottoms on both sides of the two glow tubes, so that the overall thickness of the circuit main board plus the glow tube does not increase, maintaining the minimum thickness effect. Larger components, such as transformers, high-voltage filtering capacitors, button batteries, and clock chips, are installed on the circuit board body between the air nozzles of the two glow tubes. 4. Since the M-shaped circuit board design makes the area available for connection at one end with two openings in its cross-section limited, at least 11 pins of one glow tube need to be connected to the circuit for electrical drive, and 22 pins are required for two glow tubes. It is impossible to place 22 solder joints for connection. Therefore, a pin simplification drive circuit is provided to transfer the glow tube and the circuit board body. After the serial-to-parallel conversion of the pin simplification circuit, the number of pins that need to be connected to the main board body is only a single digit, which is sufficient for connection even with limited area. 5. The pin simplification circuit board can be designed in the form of only having a serial-to-parallel chip, without the need to set an anode gating power supply circuit and a cathode gating circuit for high-voltage isolation, which helps to design the pin simplification circuit to be smaller and does not increase the volume of the entire circuit board.
[0016] The present utility model provides a glow tube watch. Compared with the prior art, the present utility model has at least the following technical effects: By adopting the above circuit board design, the overall structure of the circuit board is thinner, so that the overall appearance of the glow tube watch can be made thinner, smaller, and more beautiful. Description of the Drawings
[0017] Figure 1 It is a schematic structural diagram of a circuit board of a glow tube watch of the present utility model.
[0018] Figure 2 It is a longitudinal sectional schematic diagram of a circuit board of a glow tube watch of the present utility model
[0019] Figure 3It is another schematic structural diagram of the circuit board of a glow tube watch of the present utility model.
[0020] Figure 4 It is a schematic structural diagram of the circuit board of a glow tube watch of the present utility model after removing the glow tube.
[0021] Figure 5 It is a schematic structural diagram of the circuit board body of the present utility model.
[0022] Figure 6 It is a schematic connection diagram of the connection relationship between the glow tube and the simplified driving circuit of the pins of the present utility model.
[0023] Figure 7 It is a schematic circuit diagram of the simplified driving circuit of the pins in the first embodiment of the present utility model.
[0024] Figure 8 It is a schematic circuit diagram of the simplified driving circuit of the pins in the second embodiment of the present utility model.
[0025] Figure 9 It is a schematic circuit diagram of the simplified driving circuit of the pins in the third embodiment of the present utility model.
[0026] Explanation of the reference numerals in the drawings: 1. Circuit board body; 11. Accommodating groove; 2. Glow tube; 21. Gas nozzle; 3. Transformer; 4. Simplified driving circuit of pins; 5. Button board; 6. Battery. Detailed implementation manners
[0027] The following further describes the present utility model in conjunction with the accompanying drawings and specific embodiments.
[0028] First embodiment
[0029] Please refer to Figures 1 to 7 , a circuit board of a glow tube 2 watch, including a circuit board body 1 and a glow tube 2. An installation position of the glow tube 2 is provided on the circuit board body 1. An accommodating groove 11 is opened downward from the upper surface at the position where the glow tube 2 is installed on the circuit board body 1. The accommodating groove 11 is used to accommodate a part of the glow tube 2. The width of the accommodating groove 11 is smaller than the diameter of the glow tube 2. By opening the accommodating groove 11 at the position where the glow tube 2 is installed on the circuit board body 1, the bottom area of the glow tube 2 can be accommodated, so that the bottom of the glow tube 2 is sunk into the accommodating groove 11 of the circuit board body 1. After the glow tube 2 is installed, the longitudinal height of the circuit board body 1 can be reduced by the depth of the accommodating groove 11 compared with the height after the installation of the original ordinary circuit board, which helps to make the glow tube 2 watch thinner, and it can be realized that the overall thickness after the assembly of the glow tube 2 and the circuit board body 1 is equal to the size of the glow tube 2 itself.
[0030] Please refer to Figures 1 to 7, preferably, there are two accommodating grooves 11, and two glow tubes 2 are provided. The two accommodating grooves 11 are respectively used to sink the bottoms of one glow tube 2. Providing two accommodating grooves 11 facilitates accommodating two glow tubes 2, and the two are combined to display time. Of course, it can also be selected according to the actual number of glow tubes 2 that form a combined display. For example, if there are four glow tubes 2, four accommodating grooves 11 can be provided, and it is not limited thereto.
[0031] Please refer to Figures 1 to 6 , preferably, the cross-section of the circuit board body 1 is in the shape of M, N, T, or U. It can also be that the accommodating groove 11 is not communicated with the edge of the circuit board body 1 (mouth shape), or it can also be in the shape of a "wei" character. Preferably, the M shape is used. First, when the diameter of the dial is fixed, if the accommodating groove 11 is placed in the middle, there will be limited space above, below, left, and right, and some larger components cannot be installed on the circuit board and will exceed the edge of the circuit board body 1. However, when designed in the form of an M shape that is aligned with only one end edge (that is, the open end), the circuit board body 1 on the side far from the open end can have a larger size to accommodate larger components, such as a transformer 3, a button battery 6, etc.
[0032] Please refer to Figures 1 to 6 , preferably, the two glow tubes 2 are installed in parallel with the same orientation and have a spacing greater than zero. A transformer 3, or a high-voltage filtering capacitor (not labeled), or a button battery 6 (not labeled), or a clock chip (not labeled) is installed on the circuit board body 1 between the nozzles 21 of the two glow tubes 2; the two openings of the M shape of the circuit board body 1 are in the opposite direction of the nozzles 21 of the glow tubes 2. The size of the nozzle 21 part of some glow tubes 2 is small, so there is enough three-dimensional space to place components such as transformers, maximizing the utilization of space.
[0033] Please refer to Figures 1 to 6, preferably, a keypad 5 or a battery 6 is disposed in the gap between the two glow tubes 2 on the circuit board body, or a keypad 5 or a battery 6 is disposed on the side of the circuit board body where the glow tube 2 faces away from the other glow tube 2; or, a keypad 5 is disposed on the side of the circuit board body where the glow tube 2 faces away from the other glow tube 2, and a battery 6 is disposed on the side of the circuit board body where the other glow tube 2 faces away from the glow tube 2; the battery 6 and the keypad 5 are electrically connected to the circuit board body. The M-shaped circuit board body allows the glow tube 2 to sink, so that the end of the outer edge of the glow tube 2 away from the gas nozzle 21 is flush with the end of the circuit board body having two openings; and due to the component layout design on the M-shaped circuit board, the higher components are placed in the middle position between the two glow tubes 2 of the circuit board body and the gaps at the bottoms on both sides of the two glow tubes 2, so that the overall thickness of the circuit board plus the glow tube 2 does not increase, maintaining the minimum thickness effect. Larger components, such as a transformer 3, a high-voltage filtering capacitor, a button battery 6, and a clock chip, etc., are installed on the circuit board body 1 between the gas nozzles 21 of the two glow tubes 2. Generally, the battery 6 and the keypad 5 are placed on both sides or in the center of the glow tube 2 to achieve the power supply of the movement and the interactive use of the user.
[0034] Please refer to Figures 1 to 7 , preferably, a pin simplification drive circuit 4 is connected to the end of the glow tube 2 away from the gas nozzle 21. The pins of the glow tube 2 are connected to the pin simplification drive circuit 4, and the pin simplification drive circuit 4 is electrically connected to the side of the circuit board body having two openings, and is used to serialize and parallelize the pins of the glow tube 2 to reduce the number of pins connected to the circuit board body. Since the M-shaped circuit board design makes the area available for connection at the end with two openings in its cross-section limited, at least 11 pins of one glow tube 2 need to be connected to the circuit for electrical drive, and 22 pins are required for two glow tubes 2. It is impossible to place 22 solder joints for connection. Therefore, a pin simplification drive circuit 4 is provided to transfer the glow tube 2 and the circuit board body. After the serialization and parallelization of the pin simplification circuit, the number of pins that need to be connected to the main board body is only a single digit, which is sufficient for connection even with limited area. The pin simplification drive circuit 4 is arranged as described above to reduce the horizontal area occupation.
[0035] Please refer to Figure 7, preferably, the pin simplification drive circuit 4 includes an anode gating power supply circuit, a cathode gating circuit, and a serial-to-parallel conversion chip. The anode pins of the two glow tubes 2 are electrically connected to the anode gating power supply circuit, the cathode pins of the glow tubes 2 are electrically connected to the cathode gating circuit, the anode gating power supply circuit and the cathode gating circuit are electrically connected to the serial-to-parallel conversion chip, and the serial-to-parallel conversion chip is electrically connected to the corresponding interface of the circuit board body 1. Specifically, it consists of two glow tubes 2 of NT1 NT2, and two corresponding groups of anode gating power supply circuits for the glow tubes 2 and 12 shared cathode gating circuits, and two serial-to-parallel conversion ICs: among them, the input signals CNA1 CNA2 of the anode gating circuit and the input signals CN0-CN9, CNL, CNR of the 12 cathode gating circuits are all connected to the output ports of the serial-to-parallel conversion chip. The serial-to-parallel conversion chip can be 74HC595. Considering volume and space limitations, 74HC595BQ is usually used, which is a QFN small patch package. Because this serial-to-parallel conversion chip is usually a low-voltage process and operates on a 3.3 or 5V logic voltage platform, it cannot be directly connected to the anode or cathode pins of the glow tube 2 (the anode power supply of the glow tube 2 is above 135V, usually 170V or higher, and when the digital cathode is extinguished, the voltage can also reach 51V-110V or higher). High-voltage isolation devices are required to isolate the pins of the chip and the pins of the glow tube 2. Therefore, the cathode gating circuit can select high-voltage triodes or high-voltage MOS tubes of models such as A42 and 5551. The commonly used models are MMBTA42 in SOT323 package or SOT23 package, and MMST5551 in SOT323 package or SOT23 package. The package size is small and can be flexibly arranged on the small drive board of the glow tube 2. Among them, the anode gating circuit of the glow tube 2 usually needs to use a Darlington tube structure composed of two triodes to realize the function of switching a signal of 3.3 / 5v to a voltage of 135V or higher. The Darlington tube structure usually consists of two triodes, which can be two A42 (NPN) or one A42 and one A92 (PNP), or can also be realized by an equivalent high-voltage MOS tube. For the serial-to-parallel conversion chip, a standard serial-to-parallel function chip such as 74HC595 is generally used. Multiple 595s can realize the state control of 8 times the number of IO pins by sharing SHCP, STCP, and 1 DATA signal pin. In the scenario used in this patent, 3 input signals are required to control the state of 2 + 12 = 14 output IO pins, and there are still two pins idle.Therefore, it can also be optimized to use an independent chip or a programmable MCU to achieve 1 - 3 data inputs, corresponding to 12 - pin outputs. For example, using one STM32L031G6U6 or one arduino MCU, its input is realized by the three - wire control method of 595 or the 1 - wire single - bus (such as the CAN communication protocol) to achieve signal input. This MCU decodes the input signal into outputs corresponding to 14 pins, which can simplify the state of the multi - pin control of the glow tube 2 from 14 pins to 1 to 3 control pins. The 22 pins of two glow tubes 2 are processed and sorted by the pin - simplified driving circuit 4 into a few 6 pins, generally including HV high - voltage, SHCP, STCP, DATA data signals of three shift registers, and VCC GND power supply of the shift register, which can complete the driving of the glow tube 2 by the M - type main board, saving 16 solder joints and making the product easier to produce and weld.
[0036] In addition to the above - mentioned low - voltage chip plus isolated control of the high - voltage glow tube 2 solution, it is also possible to directly use serial - to - parallel conversion chips that support high - voltage, such as HV5523, HV57708, 595 chips that support high - voltage, etc. The output pins of these chips can withstand 51V or higher voltages themselves, so they can be directly connected to the digital cathodes of the glow tube 2 to drive the corresponding digits. The following is an example:
[0037] Embodiment 2
[0038] See Figure 7 And Figure 8 , the difference between Embodiment 2 and Embodiment 1 is that: the pin - simplified driving circuit 4 includes a serial - to - parallel conversion chip and an anode - gating power - supply circuit. The cathode pins of the two glow tubes 2 are directly connected to the corresponding pins of the serial - to - parallel conversion chip, the anode pins of the two glow tubes 2 are electrically connected to the anode - gating power - supply circuit, the anode - gating power - supply circuit is electrically connected to the serial - to - parallel conversion chip, and the serial - to - parallel conversion chip is electrically connected to the corresponding interface of the circuit board body 1. This design uses TD68023AFN as the driving chip for the cathode of the glow tube 2. The internal design of this chip is a Darlington transistor array, so it already has the function of driving high - voltage with low - voltage signals, and thus can be directly connected to the digital cathode of the glow tube 2 for driving. In this case, a high - voltage isolation device such as A42 is not required for the cathode. This solution can also further simplify the design of the driving circuit small board of the glow tube 2, reduce components and thus optimize the overall size. And for the anode - gating power - supply circuit, see Embodiment 1.
[0039] Embodiment 3
[0040] See Figure 7 And Figure 9, the difference between Embodiment 3 and Embodiment 1 is that: the pin simplified drive circuit 4 includes a serial-parallel chip, the cathode pins and anode pins of the two glow tubes 2 are connected to the corresponding pins of the serial-parallel conversion chip, and the serial-parallel conversion chip is electrically connected to the corresponding interface of the circuit board body 1. Using HV5523 as one of the circuit solutions for driving the glow tube 2, because of the rich interfaces of HV5523, all the pins of these two glow tubes are respectively connected to HV5523. At the same time, the anodes of the two glow tubes are also directly connected to the HV high-voltage power supply. Note that the connection methods of the cathodes and anodes of the two glow tubes 2 are not necessarily as shown in the picture. The method shown in the picture is usually called the direct drive method. In the previous figures, the corresponding digital cathodes of the two glow tubes 2 are connected in pairs, and the anodes are controlled by two groups of Darlington circuits respectively. In fact, only one digit of one glow tube 2 is selected and lit at the same moment. This drive method is the scan drive.
[0041] A glow tube watch, including a housing, and a circuit board of the glow tube watch as described in any one of the above is provided inside the housing.
[0042] The working principle of the present utility model is as follows:
[0043] By digging a receiving groove 11 in the circuit board body 1, the glow tube 2 installed thereon can partially sink into the circuit board, so that the thickness of the assembled circuit board body and the glow tube 2 is equal to the diameter of the glow tube 2, which helps to reduce the thickness of the entire module. Applying the circuit board body with an M-shaped layout can leave a larger area of the whole space for installing larger components, and reasonably arranging each device on the circuit board body helps to miniaturize and maximize the space utilization efficiency. The pin simplified drive circuit 4 is arranged at one end of the opening to perform serial-parallel conversion on the pins of the glow tube 2 to reduce the number of pins to be connected. Even if the area of the circuit board body 1 is reduced due to the digging of the receiving groove 11, only a single-digit number of connection points need to be set, so that the glow tube 2 can be normally connected and controlled even when the area becomes smaller, and it does not occupy the area of the closed end of the circuit board body 1 on the side of the gas nozzle 21 of the glow tube 2, so that the overall volume can be reduced to make the glow tube 2 watch thinner and lighter.
[0044] The following points should be noted: First, in the description of the present application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, which can be a mechanical connection or an electrical connection, or the communication inside two components, and can be directly connected. "Up", "down", "left", "right", etc. are only used to represent the relative position relationship. When the absolute position of the described object changes, the relative position relationship may change.
[0045] Secondly: In the accompanying drawings of the disclosed embodiments of the present utility model, only the structures related to the disclosed embodiments are involved. For other structures, reference can be made to the general design. Without conflict, the same embodiment and different embodiments of the present utility model can be combined with each other.
[0046] Finally, the above are only the preferred embodiments of the present utility model. The protection scope of the present utility model is not limited to the above embodiments. All technical solutions falling within the concept of the present utility model belong to the protection scope of the present utility model.
[0047] It should be noted that for those of ordinary skill in the art in this technical field, several improvements and refinements made without departing from the principle of the present utility model should also be regarded as within the protection scope of the present utility model.
Claims
1. A circuit board for a Nixie tube watch, comprising a circuit board body and a Nixie tube, characterized in that: The circuit board body is provided with a mounting position for the nixie tube. The circuit board body is provided with a receiving groove extending downward from the upper surface at the position for mounting the nixie tube. The receiving groove is used to receive part of the nixie tube. The width of the receiving groove is smaller than the diameter of the nixie tube.
2. The circuit board of a Nixie tube watch according to claim 1, characterized in that: There are two containing grooves, there are two nixie tubes, and the two containing grooves are used to sink into the bottom of one nixie tube respectively.
3. The circuit board of a Nixie tube watch according to claim 2, characterized in that: The cross section of the circuit board body is M-shaped, N-shaped, T-shaped or U-shaped.
4. The circuit board of a Nixie tube watch according to claim 3, characterized in that: The two Nixie tubes are installed in parallel in the same direction and have a spacing greater than zero. A transformer, or a high-voltage filter capacitor, or a button battery, or a clock chip is installed on the circuit board body between the gas nozzles of the two Nixie tubes; the two M-shaped openings of the circuit board body are located in opposite directions of the gas nozzles of the Nixie tubes.
5. The circuit board of a Nixie tube watch according to claim 4, characterized in that: A keypad or a battery is arranged in the gap between the two Nixie tubes on the circuit board body, or a keypad or a battery is arranged on the side of the Nixie tube away from the other Nixie tube on the circuit board body; or a keypad is arranged on the side of the Nixie tube away from the other Nixie tube on the circuit board body, and a battery is arranged on the side of the other Nixie tube away from the Nixie tube on the circuit board body; The battery and the keypad are electrically connected to the circuit board body.
6. The circuit board of a Nixie tube watch according to claim 3, characterized in that: One end of the nixie tube away from the gas nozzle is connected with a pin-simplified driving circuit, the pins of the nixie tube are connected to the pin-simplified driving circuit, and the pin-simplified driving circuit is electrically connected to a side of the circuit board body having two openings, and is used to connect the pins of the nixie tube in series and in parallel to reduce the number of pins connected to the circuit board body.
7. The circuit board of a Nixie tube watch according to claim 6, characterized in that: The pin simplified driving circuit includes an anode gating supply circuit, a cathode gating circuit and a serial-to-parallel conversion chip. The anode pins of the two Nixie tubes are electrically connected to the anode gating supply circuit, the cathode pins of the Nixie tubes are electrically connected to the cathode gating circuit, the anode gating supply circuit and the cathode gating circuit are electrically connected to the serial-to-parallel conversion chip, and the serial-to-parallel conversion chip is electrically connected to the corresponding interface of the circuit board body.
8. The circuit board of a Nixie tube watch according to claim 6, characterized in that: The pin-simplified driving circuit includes a serial-parallel chip, the cathode pins and anode pins of the two Nixie tubes are connected to corresponding pins of the serial-parallel converter chip, and the serial-parallel converter chip is electrically connected to the corresponding interface of the circuit board body.
9. The circuit board of a Nixie tube watch according to claim 6, characterized in that: The pin simplified driving circuit includes a serial-to-parallel converter chip and an anode gating power supply circuit. The cathode pins of the two Nixie tubes are directly connected to the corresponding pins of the serial-to-parallel converter chip, the anode pins of the two Nixie tubes are electrically connected to the anode gating power supply circuit, the anode gating power supply circuit is electrically connected to the serial-to-parallel converter chip, and the serial-to-parallel converter chip is electrically connected to the corresponding interface of the circuit board body.
10. A Nixie tube watch, comprising a housing, characterized in that: The housing is provided with a circuit board of a Nixie tube watch as claimed in any one of claims 1 to 9.