Touch control type LED nixie tube and control circuit

Abstract

A touch control type LED nixie tube and a control circuit relate to the technical field of nixie tubes and comprise a shell and a circuit board arranged in the shell. LED lamp beads are arranged on the circuit board; a display driving chip, wherein the display driving chip is electrically connected with the LED lamp beads; a touch device; a touch control driving chip, wherein the touch control driving chip is electrically connected with the touch control device; and the connector is electrically connected with the display driving chip, and the connector is electrically connected with the touch driving chip. The display driving chip, the touch driving chip, the touch device and the like are all integrated into the LED nixie tube, the use area of the mainboard is reduced, the material cost is reduced, meanwhile, the LED nixie tube is completely separated from the mainboard, multiple products can be controlled by one mainboard, disassembly, assembly and maintenance are convenient, and the maintenance cost is greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to digital tube technical field, concretely is touch type LED digital tube and control circuit. BACKGROUND

[0002] The LED digital tube or the special-shaped display is a display device composed of a plurality of light emitting diodes (LED) packaged together, mainly applied to the digital or function symbol display of household appliances and instruments. When using, the packaged LED digital tube or special-shaped display is usually welded to the main control board with display driving chip, touch driving chip and single-chip microcomputer.

[0003] For example, the Chinese patent with publication number CN212749593U discloses an air fryer main control circuit with capacitive touch and double digital tube display, which comprises a main control chip and a driving chip, bidirectional transmission of information between the main control chip and the driving chip, the input end of the main control chip is connected with an interface circuit, an NTC circuit, a key circuit, an encoder and a memory circuit through wires, the output end of the driving chip is connected with an LED lamp and two digital tubes, the key circuit is a capacitive touch key, and the key circuit comprises four modes of time decrement, temperature increment, starting work and ending work, and a voltage stabilizing capacitor and a filter capacitor are connected between the interface circuit and the main control chip. Through the cooperation of the above electrical elements, the air fryer can be temperature controlled, and the efficiency of the air fryer can be further improved.

[0004] However, at present, the size of the LED digital tube is relatively large, and if a touch spring is additionally added to the main control board, the size of the main control board will be larger, resulting in increased cost and difficult position design of the main control board.

[0005] Therefore, it is urgent to develop a touch type LED digital tube and control circuit to solve the problems in the prior art. SUMMARY

[0006] The utility model discloses a touch type LED digital tube and control circuit, which sets the display driving chip, touch device and touch driving chip on the circuit board of the LED digital tube, to solve the problem of oversized main control board in the background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0008] A touch type LED digital tube comprises a housing and a circuit board arranged in the housing; the circuit board is provided with:

[0009] LED lamp beads;

[0010] A display driving chip is electrically connected with the LED lamp beads.

[0011] Touch device

[0012] Touch driving chip, the touch driving chip is electrically connected with the touch device

[0013] Connector, the connector is electrically connected with the display driving chip, and the connector is electrically connected with the touch driving chip.

[0014] Further, the circuit board is further provided with a touch mounting hole, and the touch device is mounted on the circuit board through the touch mounting hole.

[0015] Further, the LED lamp bead and the touch mounting hole are arranged on the front surface of the circuit board, and the display driving chip and the touch driving chip are arranged on the back surface of the circuit board.

[0016] Further, the touch device is a touch spring, and an LED lamp bead is further arranged in the touch mounting hole, and the touch spring surrounds the LED lamp bead.

[0017] Further, the LED lamp bead is an LED patch lamp bead, the circuit board is a black tin spraying plate, and the LED patch lamp bead is welded with the circuit board through a patch machine.

[0018] Further, a dispersion film is further included, and the dispersion film is arranged on the front surface of the shell.

[0019] Further, a display symbol layer is arranged on the dispersion film.

[0020] Further, an avoiding hole is arranged on the shell, and the touch device is located in the avoiding hole.

[0021] Further, a hollow hole is arranged on the dispersion film, and the position of the hollow hole corresponds to the position of the avoiding hole.

[0022] A control circuit includes a control mainboard and the touch LED nixie tube, and the control mainboard is electrically connected with the touch LED nixie tube through the connector.

[0023] Compared with the prior art, the touch LED nixie tube has the following beneficial effects:

[0024] By integrating the display driving chip, the touch driving chip and the touch device into the LED nixie tube, the use area of the mainboard is reduced, the material cost is reduced, the LED nixie tube is completely separated from the mainboard, one mainboard controls multiple products, and the maintenance cost is greatly reduced.

[0025] Furthermore, this application places the display driver chip and the touch driver chip on the opposite side of the circuit board relative to the LED beads to reduce the space on the circuit board and save manufacturing costs.

[0026] Other features and advantages of this utility model will be disclosed in detail in the following specific embodiments and accompanying drawings. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of an LED digital tube;

[0028] Figure 2 This is a structural diagram of the back of the circuit board;

[0029] Figure 3 This is a structural diagram of the front of the circuit board;

[0030] Figure 4 This is a schematic diagram of the dispersive film structure;

[0031] Figure 5 This is a schematic diagram of the front structure of an LED digital tube;

[0032] Figure 6 This is a schematic diagram of the circuit structure of the display driver chip;

[0033] Figure 7 This is a schematic diagram of the circuit structure of the touch driver chip;

[0034] Figure 8 This is a schematic diagram of the connector's circuit structure.

[0035] The labels for the attached figures are as follows:

[0036] 1. Housing; 2. Circuit board; 21. Display driver chip; 22. Touch driver chip; 23. Touch mounting hole; 24. Touch spring; 25. LED beads; 3. Color dispersion film; 31. Hole. Detailed Implementation

[0037] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0038] A touch-sensitive LED digital tube, such as Figures 1 to 5 As shown, it includes a housing 1 and a circuit board 2 disposed within the housing 1; the circuit board 2 is provided with:

[0039] 25 LED beads;

[0040] Display driver chip 21, which is electrically connected to the LED beads 25;

[0041] Touch devices;

[0042] A touch control driving chip 22 is electrically connected with the touch control device;

[0043] A connector is electrically connected with the display driving chip 21 and the touch control driving chip 22.

[0044] The application integrates the display driving chip 21, the touch control driving chip 22 and the touch control device into the LED nixie tube, reduces the use area of the mainboard, reduces the material cost, separates the LED nixie tube from the mainboard completely, realizes the communication between the nixie tube and the mainboard through the connector, realizes that one mainboard controls multiple products, is convenient to disassemble and maintain, and greatly reduces the maintenance cost.

[0045] The circuit board 2 is further provided with a touch control mounting hole 23, and the touch control device is mounted on the circuit board 2 through the touch control mounting hole 23.

[0046] The LED lamp bead 25 and the touch control mounting hole 23 are arranged on the front surface of the circuit board 2, and the display driving chip 21 and the touch control driving chip 22 are arranged on the back surface of the circuit board 2.

[0047] The application arranges the display driving chip 21 and the touch control driving chip 22 on the other surface of the circuit board 2, so as to reduce the space on the circuit board 2 and save the manufacturing cost.

[0048] Optionally, the connector can also be arranged on the back surface of the circuit board 2.

[0049] The touch control device is a touch control spring 24, the touch control mounting hole 23 is further provided with an LED lamp bead 25, and the touch control spring 24 surrounds the LED lamp bead 25. Specifically, the touch control spring 24 surrounds the LED lamp bead 25 in the front view of the circuit board 2.

[0050] In the embodiment, the back surface of the circuit board 2 is provided with a circuit, the touch control spring is electrically connected with the circuit on the back surface of the circuit board 2, and the LED lamp bead 25 is also electrically connected with the circuit on the back surface of the circuit board 2.

[0051] The application uses the touch control spring 24 and simultaneously arranges the LED lamp bead 25 at the mounting position of the touch control spring 24, so that the user can judge the state of the touch control spring 24 according to the state of the LED lamp bead 25, and the user experience is improved. Further, the touch control spring 24 surrounds the LED lamp bead 25, so as to save the mounting position and make the light effect of the state display of the touch control spring 24 more uniform.

[0052] The LED lamp bead 25 is an LED patch lamp bead, the circuit board 2 is a black tin spraying board, and the LED patch lamp bead is welded with the circuit board 2 through a patch machine.

[0053] In the embodiment, the model of the display driving chip 21 is TM1681, the model of the touch driving chip 22 is XW09A, and the model of the connector is HX20020-AWB. The display driving chip 21 and the touch driving chip 22 realize communication with an external control mainboard through the connector. Specifically, the control programs between the display driving chip 21 and the LED lamp bead 25 or between the touch driving chip 22 and the touch spring 24 are all prior art, and will not be described here.

[0054] As shown in Figures 6 to 8 The part of the pins of the display driving chip 21 is used for electrical connection with the LED lamp bead 25 to control the lighting of the LED lamp bead 25. The part of the pins of the display driving chip 21 is in communication connection with the connector. The power supply pin of the display driving chip 21 is used for connection with +5v. The PAD pin of the touch driving chip 22 is in electrical connection with the touch spring 24. The power supply pin is connected with +5v through a voltage stabilizer. The part of the communication pins is in electrical connection with the connector. The power supply pin of the connector is used for connection with +5v. In the embodiment, the model of the voltage stabilizer is HT7533, and +5v can be provided by an external control mainboard or an external power supply.

[0055] In the embodiment, the LED number tube further comprises a dispersion film 3, and the dispersion film 3 is arranged on the front surface of the shell 1.

[0056] The dispersion film 3 is provided with a display symbol layer.

[0057] The shell 1 is provided with a relief hole, and the touch device is located in the relief hole. The dispersion film 3 is provided with a hollow hole 31, and the position of the hollow hole 31 corresponds to the position of the relief hole.

[0058] The application comprises the following steps when being installed:

[0059] Through the patch process, the LED patch lamp bead is welded on the circuit board 2 through a patch machine. The patch machine can use reflow soldering for welding.

[0060] The LED lamp test is performed on the semi-finished product with the lamp bead. After the LED lamp test, the display driving chip 21, the touch driving chip 22 and other components are integrated to the back surface of the circuit board 2 of the special-shaped display.

[0061] The display with the integrated touch display is connected to the main control board for testing.

[0062] After the test is completed, the circuit board 2 is combined with the plastic shell 1 through a hot-matching technology, is fixed in the plastic shell 1, and light leakage is prevented from being generated.

[0063] A color film 3 printed with symbols, characters and the like is pasted on the surface of the plastic shell 1, so that light rays can be evenly displayed on the window when the LED patch lamp beads are lighted, and a touch function is realized.

[0064] The control circuit comprises a control mainboard and the touch LED nixie tube, and the control mainboard is electrically connected with the touch LED nixie tube through the connector.

[0065] The utility model discloses a touch LED nixie tube and control circuit, simple structure, convenient to use, high reliability.

[0066] In the utility model, unless another definite provision and limitation, the term " install " " link " " connect " " fixed " and so on term should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated, can be mechanical connection, also can be electric connection, can be directly connected, also can indirectly be connected through intermediate medium, can be the intercommunication of two elements or the interaction of two elements. For ordinary skilled person in the art, the above-mentioned term can be understood according to the specific meaning in the utility model.

Claims

1. A touch LED nixie tube, characterized by, The LED digital tube comprises a shell and a circuit board arranged in the shell; the circuit board is provided with: an LED lamp bead; a display driving chip, which is electrically connected with the LED lamp bead; a touch device; a touch driving chip, which is electrically connected with the touch device; a connector, which is electrically connected with the display driving chip and the touch driving chip.

2. The touch LED nixie tube according to claim 1, characterized in that, The circuit board is further provided with a touch mounting hole, and the touch device is mounted on the circuit board through the touch mounting hole.

3. The touch LED nixie tube according to claim 2, characterized in that, The LED lamp bead and the touch mounting hole are arranged on the front surface of the circuit board, and the display driving chip and the touch driving chip are arranged on the back surface of the circuit board.

4. The touch LED nixie tube according to claim 2, wherein, The touch device is a touch spring; the touch mounting hole is further provided with an LED lamp bead, and the touch spring surrounds the LED lamp bead.

5. The touch LED nixie tube according to claim 4, characterized in that, The LED lamp bead is an LED patch lamp bead, the circuit board is a black tin-plated plate, and the LED patch lamp bead is welded with the circuit board through a patch machine.

6. The touch-controlled LED nixie tube according to any one of claims 1 to 4, characterized in that The LED digital tube further comprises a color dispersion film, which is arranged on the front surface of the shell.

7. The touch LED nixie tube according to claim 6, characterized in that, The color dispersion film is provided with a display symbol layer. 8.The touch LED nixie tube of claim 6, wherein, The shell is provided with a relief hole, and the touch device is located in the relief hole. 9.The touch LED nixie tube of claim 8, wherein, The color dispersion film is provided with a hollow hole, and the position of the hollow hole corresponds to the position of the relief hole.

10. Control circuit, characterized in that The LED digital tube further comprises a control mainboard, which is electrically connected with the touch LED digital tube through the connector.

Images