CN220359317U - Long-endurance ear-hanging tour guide explanation receiving earphone device - Google Patents
Long-endurance ear-hanging tour guide explanation receiving earphone device Download PDFInfo
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- CN220359317U CN220359317U CN202320992754.4U CN202320992754U CN220359317U CN 220359317 U CN220359317 U CN 220359317U CN 202320992754 U CN202320992754 U CN 202320992754U CN 220359317 U CN220359317 U CN 220359317U
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Abstract
The utility model discloses a long-endurance ear-hanging tour guide explanation receiving earphone device which comprises an integrated circuit board, a shell, a battery pack and a loudspeaker unit, wherein the integrated circuit board is provided with a digital radio signal receiving circuit and a digital-to-analog audio circuit, the shell is provided with the integrated circuit board, the battery pack and the loudspeaker unit are arranged in the shell, and the digital radio signal receiving circuit and the digital-to-analog audio circuit are respectively arranged on different low-power chips to work. Compared with the prior art, the digital radio signal receiving circuit and the digital conversion analog audio circuit both adopt low-power chips, the current is as low as 15 milliamperes, the electric energy loss of the utility model is reduced, and meanwhile, the battery pack with large capacity is used for supplying power, so that the endurance time of the utility model is prolonged.
Description
Technical Field
The utility model relates to a tour guide earphone product, in particular to a long-endurance ear-hanging tour guide explanation receiving earphone device.
Background
Outdoor on-site teaching and training, tour guide with group explanation, such as inconvenient charging in occasions like multi-day group or travel group that goes out, often need to use the tour guide earphone of long duration.
Current tour guide earphone products: one is that hanging of drop formula is in the front, listens to the tour guide explanation signal through wired earphone, and wired the connection is inconvenient in the in-service use, and the work of preparing before the use and finishing after the use charges takes up a large amount of work or rest time of tour guide person.
Secondly, the earphone is hung on the ear in a short time, only 4 to 8 hours of time of endurance, and the tour guide needs to carry a huge charging box when the tour is carried out in a provincial or out of the tour in 7 days, so that the earphone is tired, occupies the weight of luggage and generates luggage cost.
Therefore, how to design a long-endurance ear-hanging tour guide explanation receiving earphone device, which can increase endurance time and solve the problem that tour guide is not timely and inconvenient to charge outside is a technical problem to be solved in the industry.
Disclosure of Invention
Aiming at the problems that in the prior art, the tour guide earphone has short duration, only 4 to 8 hours of duration and influences user experience, the utility model provides a long-duration ear-hanging tour guide explanation receiving earphone device.
The utility model provides a long-endurance ear-hanging tour guide explanation receiving earphone device, which comprises an integrated circuit board, a shell, a battery pack and a loudspeaker unit, wherein the integrated circuit board is provided with a digital radio signal receiving circuit and a digital-to-analog audio circuit;
the digital radio signal receiving circuit and the digital conversion analog audio circuit are respectively carried on different low-power consumption chips to work.
Further, the digital radio signal receiving circuit is mounted on an IN310 chip or an IN680 chip to operate;
the digital conversion analog audio circuit is carried on an ES8311 chip to work.
Further, the integrated circuit board further includes a first display circuit connected to the battery pack, the first display circuit including: resistor R5, resistor R6, resistor R10, light emitting diode DS1, light emitting diode DS2, charge management chip U3, and connection terminal J1;
one end of the resistor R5 is connected with 5V voltage input through a USB, the other end of the resistor R is connected to the positive electrode of the light emitting diode DS1, and the negative electrode of the light emitting diode DS1 is connected to the STDBY pin of the charging management chip U3;
one end of the resistor R6 is connected with 5V voltage input through a USB, the other end of the resistor R is connected to the positive electrode of the light-emitting diode DS2, and the negative electrode of the light-emitting diode DS2 is connected to the CHRG pin of the charging management chip U3;
the BAT pin of the charging management chip U3 is connected to the positive electrode of the battery pack, the PROG pin is connected in series with the resistor R10 and then grounded, the VCC pin is connected with 5V voltage input through USB, and the GND pin is grounded;
the VCC port of the wiring terminal J1 is connected with 5V voltage input through USB, and the VSS port is grounded.
Further, the integrated circuit board further includes a power supply circuit connected to and supplying power to the digital radio signal receiving circuit and the digital-to-analog audio circuit, the power supply circuit including: the capacitor C1, the capacitor C2, the voltage conversion chip U1 and the voltage conversion chip U2 are arranged in the capacitor R1;
the voltage conversion chip U1 and the voltage conversion chip U2 both adopt chips 6206-3.3, an IN pin of the voltage conversion chip U1 is connected with charging voltage, a GND pin is grounded, an OUT pin is connected to a power port of the digital conversion analog audio circuit and supplies power to the digital conversion analog audio circuit, and one end of the capacitor C1 is connected to the OUT pin of the voltage conversion chip U1, and the other end of the capacitor C1 is grounded;
the IN pin of the voltage conversion chip U2 is connected to the charging voltage, the GND pin is connected IN series with the resistor R1 and then grounded, the OUT pin is connected to the power port of the digital radio signal receiving circuit and supplies power to the digital radio signal receiving circuit, and one end of the capacitor C2 is connected to the OUT pin of the voltage conversion chip U2, and the other end of the capacitor C2 is grounded.
Further, the integrated circuit board further includes a regulating circuit for regulating the operation of the earphone device, the regulating circuit includes: resistor R18, resistor R21, resistor R22, resistor R27, resistor R28, capacitor C34, diode D1, diode D2, triode Q1, triode Q2, multifunctional switch SW1, volume control switch SW2, volume control switch SW3;
the emitter of the triode Q1 is connected to the positive electrode of the battery pack, the collector of the triode Q1 is connected in series with the capacitor C34 and then grounded, the base of the triode Q1 is connected in series with the resistor R21 and then connected to the positive electrode of the diode D1, the negative electrode of the diode D1 is connected in series with the multifunctional switch SW1 and then grounded, one end of the resistor R18 is connected between the triode Q1 and the positive electrode of the battery pack, the other end of the resistor R18 is connected between the triode Q1 and the resistor R21, and charging voltage is also connected between the triode Q1 and the capacitor C34;
the collector of the triode Q2 is connected between the resistor R21 and the diode D1, the emitter is grounded, the base is connected IN series with the resistor R22 and then is connected to a GPIO-2-0 pin of the IN310 chip or the IN680 chip;
the anode of the diode D2 is connected to the GPIO-3-4 pin of the IN310 chip or the IN680 chip, and the cathode is connected between the diode D1 and the multifunctional switch SW 1;
one end of the resistor R27 is connected to a GPIO-4-1 pin of the IN310 chip or the IN680 chip, and the other end of the resistor R is connected IN series with the volume adjusting switch SW2 and then grounded;
one end of the resistor R28 is connected to the GPIO-3-5 pin of the IN310 chip or the IN680 chip, and the other end of the resistor R is connected IN series with the volume adjusting switch SW3 and then grounded.
Further, the multifunctional switch SW1 is a switch for soft on/off and code matching of the power supply of the earphone device, and is turned on/off in long time, turned on/off in short time, or turned off for mute when the multifunctional switch SW1 is turned on/off in short time;
the volume adjustment switch SW2 and the volume adjustment switch SW3 are volume adjustment switches of the earphone device, and volume is increased when the volume adjustment switch SW2 is triggered and volume is decreased when the volume adjustment switch SW3 is triggered.
Further, the integrated circuit board further includes a second display circuit connected to the digital radio signal receiving circuit, the second display circuit including: resistor R24, resistor R25, light emitting diode D3, light emitting diode D4;
the positive electrode of the light emitting diode D3 is connected to a power port of the digital radio signal receiving circuit, and the negative electrode of the light emitting diode D3 is connected with the resistor R24 IN series and then is connected to a GPIO-3-2 pin of the IN310 chip or the IN680 chip;
the anode of the light emitting diode D4 is connected to the power port of the digital radio signal receiving circuit, and the cathode of the light emitting diode D is connected with the resistor R25 IN series and then is connected to the GPIO-3-3 pin of the IN310 chip or the IN680 chip.
Further, the IN310 chip or the IN680 chip has at least one filter pin connected with a filter circuit, and the filter circuit is used for filtering interference signals IN the digital radio signal.
Compared with the prior art, the utility model has at least the following beneficial effects:
the digital radio signal receiving circuit and the digital conversion analog audio circuit both adopt low-power chips, the current is as low as 15 milliamperes, the electric energy loss of the utility model is reduced, meanwhile, the battery pack with large capacity is adopted for supplying power, the endurance time of the utility model is increased, the endurance time can reach about 10 days, and the industry problem that the tour guide personnel are inconvenient to charge outside is solved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a topology of a digital radio signal receiving circuit in the present utility model;
FIG. 2 is a topology of a digitally converted analog audio circuit of the present utility model;
FIG. 3 is a schematic diagram of a first display circuit according to the present utility model;
FIG. 4 is a topology of a power supply circuit according to the present utility model;
FIG. 5 is a topology of a conditioning circuit according to the present utility model;
fig. 6 is a topology of a second display circuit according to the present utility model.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
Thus, reference throughout this specification to one feature will be used in order to describe one embodiment of the utility model, not to imply that each embodiment of the utility model must be in the proper motion. Furthermore, it should be noted that the present specification describes a number of features. Although certain features may be combined together to illustrate a possible system design, such features may be used in other combinations not explicitly described. Thus, unless otherwise indicated, the illustrated combinations are not intended to be limiting.
The principles and structures of the present utility model are described in detail below with reference to the drawings and the examples.
Current tour guide earphone products: one is that hanging of drop formula is in the front, listens to the tour guide explanation signal through wired earphone, and wired the connection is inconvenient in the in-service use, and the work of preparing before the use and finishing after the use charges takes up a large amount of work or rest time of tour guide person.
Secondly, the earphone is hung on the ear in a short time, only 4 to 8 hours of time of endurance, and the tour guide needs to carry a huge charging box when the tour is carried out in a provincial or out of the tour in 7 days, so that the earphone is tired, occupies the weight of luggage and generates luggage cost.
In order to solve the problems, the utility model aims to solve the industrial problem that the tour guide personnel are inconvenient to charge outside, and the utility model aims to reduce the electric energy loss by adopting a low-power chip so as to increase the endurance time, and simultaneously, more electric energy can be stored by adopting a battery pack with large capacity so as to further increase the endurance time to meet the use requirement of users.
Specifically, the long-endurance ear-hanging tour guide explanation receiving earphone device provided by the utility model comprises an integrated circuit board, a shell provided with the integrated circuit board, and a battery pack and a loudspeaker unit arranged in the shell.
The integrated circuit board is provided with a digital radio signal receiving circuit for receiving a digital radio signal and a digital-to-analog audio circuit for converting the digital radio signal into an analog signal.
In the utility model, a digital radio signal receiving circuit and a digital conversion analog audio circuit are respectively arranged on different low-power consumption chips to work.
The digital radio signal receiving circuit and the digital conversion analog audio circuit are arranged on the low-power consumption chip, so that the electric energy loss of the utility model can be reduced. In the traditional design scheme, the current loss is approximately 70-80 milliamperes, and the current loss is approximately 10-15 milliamperes. Meanwhile, in the utility model, the battery pack adopts a battery pack with large capacity, which can store more electric energy, further improves the endurance time of the utility model, and meets the use requirement of users.
Referring to fig. 1 and 2, IN a preferred embodiment of the present utility model, the digital radio signal receiving circuit employs an IN310 chip or an IN680 chip;
the digital-to-analog audio circuit uses an ES9311 chip.
The digital radio signal receiving circuit is used for converting the high-frequency audio digital signal into a low-frequency audio digital signal, and the digital conversion analog audio circuit can convert the low-frequency audio digital signal into an analog signal, namely, output sound after receiving the low-frequency audio digital signal.
Referring to fig. 3, the integrated circuit board of the present utility model is further provided with a first display circuit connected to the battery pack, the first display circuit includes: resistor R5, resistor R6, resistor R10, light emitting diode DS1, light emitting diode DS2, charge management chip U3, and connection terminal J1;
one end of the resistor R5 is connected with 5V voltage input through a USB, the other end of the resistor R is connected to the positive electrode of the light emitting diode DS1, and the negative electrode of the light emitting diode DS1 is connected to the STDBY pin of the charging management chip U3;
one end of the resistor R6 is connected with 5V voltage input through a USB, the other end of the resistor R is connected to the positive electrode of the light emitting diode DS2, and the negative electrode of the light emitting diode DS2 is connected to the CHRG pin of the charging management chip U3;
the BAT pin of the charging management chip U3 is connected to the positive electrode of the battery pack, the PROG pin is connected in series with the resistor R10 and then grounded, the VCC pin is connected into 5V voltage input through USB, and the GND pin is grounded;
the VCC port of the wiring terminal J1 is connected with 5V voltage input through USB, and the VSS port is grounded.
Here, the STDBY pin is connected to the battery charge completion indication terminal of the charge management chip U3, and the light emitting diode DS1 is connected to the STDBY pin for displaying to alert the user to the completion of charging when the present utility model completes charging;
the CHRG pin is connected to the charge state indication terminal of the charge management chip U3, and the light emitting diode DS2 is connected to the CHRG pin for displaying to alert the user when the present utility model is in the charge state.
Referring to fig. 4, the integrated circuit board of the present utility model is further equipped with a power supply circuit connected to the digital radio signal receiving circuit and the digital-to-analog audio circuit and supplying power thereto, the power supply circuit includes: the capacitor C1, the capacitor C2, the voltage conversion chip U1 and the voltage conversion chip U2 are arranged in the capacitor R1;
the voltage conversion chip U1 and the voltage conversion chip U2 both adopt chips 6206-3.3, an IN pin of the voltage conversion chip U1 is connected with charging voltage, a GND pin is grounded, an OUT pin is connected to a power port of the digital conversion analog audio circuit and supplies power to the power port, and one end of a capacitor C1 is connected to an OUT pin of the voltage conversion chip U1, and the other end of the capacitor C1 is grounded;
the IN pin of the voltage conversion chip U2 is connected to the charging voltage, the GND pin is connected IN series with the resistor R1 and then grounded, the OUT pin is connected to the power port of the digital radio signal receiving circuit and supplies power to the digital radio signal receiving circuit, and one end of the capacitor C2 is connected to the OUT pin of the voltage conversion chip U2, and the other end of the capacitor C2 is grounded.
Here, the voltage conversion chip U1 and the voltage conversion chip U2 each have two OUT pins, and since the connection manners of the two OUT pins are the same, they are collectively described as one OUT pin in the above. Here, the voltage conversion chip U1 functions to convert the charging voltage into a voltage of 3.3V that can be charged by the digital-to-analog audio circuit, and the voltage conversion chip U2 functions to convert the charging voltage into a voltage that can be charged by the digital radio signal receiving circuit.
Referring to fig. 5, the integrated circuit board of the present utility model is further equipped with an adjusting circuit for adjusting the operation of the earphone device, where the adjusting circuit includes: resistor R18, resistor R21, resistor R22, resistor R27, resistor R28, capacitor C34, diode D1, diode D2, triode Q1, triode Q2, multifunctional switch SW1, volume control switch SW2, volume control switch SW3;
the emitter of the triode Q1 is connected to the positive electrode of the battery pack, the collector of the triode Q1 is connected in series with the capacitor C34 and then grounded, the base of the triode Q1 is connected in series with the resistor R21 and then connected to the positive electrode of the diode D1, the negative electrode of the diode D1 is connected in series with the multifunctional switch SW1 and then grounded, one end of the resistor R18 is connected between the triode Q1 and the positive electrode of the battery pack, the other end of the resistor R18 is connected between the triode Q1 and the resistor R21, and charging voltage is also connected between the triode Q1 and the capacitor C34;
the collector of the triode Q2 is connected between the resistor R21 and the diode D1, the emitter is grounded, and the base is connected with the resistor R22 IN series and then is connected to a GPIO-2-0 pin of the IN310 chip or the IN680 chip;
the anode of the diode D2 is connected to the GPIO-3-4 pin of the IN310 chip or the IN680 chip, and the cathode is connected between the diode D1 and the multifunctional switch SW 1;
one end of the resistor R27 is connected to the GPIO-4-1 pin of the IN310 chip or the IN680 chip, and the other end of the resistor R is connected IN series with the volume adjusting switch SW2 and then grounded;
one end of the resistor R28 is connected to the GPIO-3-5 pin of the IN310 chip or the IN680 chip, and the other end of the resistor R is connected IN series with the volume adjusting switch SW3 and then grounded.
Specifically, the multifunctional switch SW1 is used as a switch for soft on/off and code matching of the power supply of the earphone device, and the mute is turned on or off in long-time on/off and short-time on/off of the multifunctional switch SW 1;
the volume adjustment switch SW2 and the volume adjustment switch SW3 are used to adjust the volume of the headphone device, and the volume is increased when the volume adjustment switch SW2 is triggered and the volume is decreased when the volume adjustment switch SW3 is triggered.
By the arrangement of the adjusting circuit, the work of the utility model can be adjusted, thereby meeting the use requirements of users in various scenes and improving the user experience.
Referring to fig. 6, the integrated circuit board of the present utility model is further equipped with a second display circuit connected to the digital radio signal receiving circuit, the second display circuit includes: resistor R24, resistor R25, light emitting diode D3, light emitting diode D4;
wherein, the positive electrode of the light emitting diode D3 is connected to the power port of the digital radio signal receiving circuit and the negative electrode serial resistor R24 and then is connected to the GPIO-3-2 pin of the IN310 chip or the IN680 chip;
the anode of the light emitting diode D4 is connected to the power port of the digital radio signal receiving circuit, and the cathode of the light emitting diode D4 is connected with the resistor R25 IN series and then is connected to the GPIO-3-3 pin of the IN310 chip or the IN680 chip.
Here, the second display circuit is connected to the digital radio signal receiving circuit, and is mainly used to display the communication state of the digital radio signal receiving circuit.
Because clutter interference exists IN the input digital radio signal, the utility model is provided with at least one filtering pin connected with a filtering circuit on an IN310 chip or an IN680 chip, and the filtering circuit is used for filtering the interference signal IN the digital radio signal.
Referring to fig. 1, the VSW pin is a filtering pin, and the inductor L3, the inductor L4, and the capacitor C28 connected to the filtering pin form an LC filter circuit for filtering the input interference signal.
Similarly, the VDDIO1 pin and the VDDIO2 pin are filter pins, and the capacitor C23, the capacitor C24, the capacitor C26 and the capacitor C27 connected with the filter pins are filter circuits for filtering input interference signals;
the VDD-AMS pin is also a filtering pin, and the inductor L1, the capacitor C14 and the capacitor 15 connected with the filtering pin form an LC filter circuit for filtering the input interference signal.
Compared with the prior art, the digital radio signal receiving circuit and the digital conversion analog audio circuit both adopt low-power chips, the current is as low as 15 milliamperes, the electric energy loss of the utility model is reduced, meanwhile, the battery pack with large capacity is adopted for power supply, the endurance time of the utility model is increased, the endurance time can reach about 10 days, and the industry problem that the tour guide personnel are inconvenient to charge outside is solved.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (8)
1. The long-endurance ear-hanging type tour guide explanation receiving earphone device is characterized by comprising an integrated circuit board, a shell, a battery pack and a loudspeaker unit, wherein the integrated circuit board is provided with a digital radio signal receiving circuit and a digital-to-analog audio circuit, the shell is provided with the integrated circuit board, and the battery pack and the loudspeaker unit are arranged in the shell;
the digital radio signal receiving circuit and the digital conversion analog audio circuit are respectively carried on different low-power consumption chips to work.
2. The earphone device of claim 1, wherein said digital radio signal receiving circuit is mounted on an IN310 chip or an IN680 chip for operation;
the digital conversion analog audio circuit is carried on an ES8311 chip to work.
3. The earphone device of claim 1, wherein said integrated circuit board further comprises a first display circuit connected to said battery pack, said first display circuit comprising: resistor R5, resistor R6, resistor R10, light emitting diode DS1, light emitting diode DS2, charge management chip U3, and connection terminal J1;
one end of the resistor R5 is connected with 5V voltage input through a USB, the other end of the resistor R is connected to the positive electrode of the light emitting diode DS1, and the negative electrode of the light emitting diode DS1 is connected to the STDBY pin of the charging management chip U3;
one end of the resistor R6 is connected with 5V voltage input through a USB, the other end of the resistor R is connected to the positive electrode of the light-emitting diode DS2, and the negative electrode of the light-emitting diode DS2 is connected to the CHRG pin of the charging management chip U3;
the BAT pin of the charging management chip U3 is connected to the positive electrode of the battery pack, the PROG pin is connected in series with the resistor R10 and then grounded, the VCC pin is connected with 5V voltage input through USB, and the GND pin is grounded;
the VCC port of the wiring terminal J1 is connected with 5V voltage input through USB, and the VSS port is grounded.
4. The earphone device of claim 1, wherein said integrated circuit board further comprises a power supply circuit connected to and supplying power to said digital radio signal receiving circuit and said digital-to-analog audio circuit, said power supply circuit comprising: the capacitor C1, the capacitor C2, the voltage conversion chip U1 and the voltage conversion chip U2 are arranged in the capacitor R1;
the voltage conversion chip U1 and the voltage conversion chip U2 both adopt chips 6206-3.3, an IN pin of the voltage conversion chip U1 is connected with charging voltage, a GND pin is grounded, an OUT pin is connected to a power port of the digital conversion analog audio circuit and supplies power to the digital conversion analog audio circuit, and one end of the capacitor C1 is connected to the OUT pin of the voltage conversion chip U1, and the other end of the capacitor C1 is grounded;
the IN pin of the voltage conversion chip U2 is connected to the charging voltage, the GND pin is connected IN series with the resistor R1 and then grounded, the OUT pin is connected to the power port of the digital radio signal receiving circuit and supplies power to the digital radio signal receiving circuit, and one end of the capacitor C2 is connected to the OUT pin of the voltage conversion chip U2, and the other end of the capacitor C2 is grounded.
5. The earphone device of claim 2, wherein said integrated circuit board further comprises an adjusting circuit for adjusting the operation of said earphone device, said adjusting circuit comprising: resistor R18, resistor R21, resistor R22, resistor R27, resistor R28, capacitor C34, diode D1, diode D2, triode Q1, triode Q2, multifunctional switch SW1, volume control switch SW2, volume control switch SW3;
wherein the emitter of the triode Q1 is connected to the positive electrode of the battery pack, and the collector is connected in series with the battery pack
The capacitor C34 is grounded, the base electrode is connected in series with the resistor R21 and then connected to the positive electrode of the diode D1, the negative electrode of the diode D1 is connected in series with the multifunctional switch SW1 and then grounded, one end of the resistor R18 is connected between the triode Q1 and the positive electrode of the battery pack, the other end of the resistor R18 is connected between the triode Q1 and the resistor R21, and charging voltage is also connected between the triode Q1 and the capacitor C34;
the collector of the triode Q2 is connected between the resistor R21 and the diode D1, the emitter is grounded, the base is connected IN series with the resistor R22 and then is connected to a GPIO-2-0 pin of the IN310 chip or the IN680 chip;
the anode of the diode D2 is connected to the GPIO-3-4 pin of the IN310 chip or the IN680 chip, and the cathode is connected between the diode D1 and the multifunctional switch SW 1;
one end of the resistor R27 is connected to a GPIO-4-1 pin of the IN310 chip or the IN680 chip, and the other end of the resistor R is connected IN series with the volume adjusting switch SW2 and then grounded;
one end of the resistor R28 is connected to the GPIO-3-5 pin of the IN310 chip or the IN680 chip, and the other end of the resistor R is connected IN series with the volume adjusting switch SW3 and then grounded.
6. The headphone apparatus according to claim 5, wherein the multi-function switch SW1 is a switch for soft on/off and code matching of the headphone apparatus power supply, and mute is turned on or off in long time, short time, or the like of the multi-function switch SW 1;
the volume adjustment switch SW2 and the volume adjustment switch SW3 are volume adjustment switches of the earphone device, and volume is increased when the volume adjustment switch SW2 is triggered and volume is decreased when the volume adjustment switch SW3 is triggered.
7. The earphone device of claim 2, wherein said integrated circuit board further comprises a second display circuit connected to said digital radio signal receiving circuit, said second display circuit comprising: resistor R24, resistor R25, light emitting diode D3, light emitting diode D4;
the positive electrode of the light emitting diode D3 is connected to a power port of the digital radio signal receiving circuit, and the negative electrode of the light emitting diode D3 is connected with the resistor R24 IN series and then is connected to a GPIO-3-2 pin of the IN310 chip or the IN680 chip;
the anode of the light emitting diode D4 is connected to the power port of the digital radio signal receiving circuit, and the cathode of the light emitting diode D is connected with the resistor R25 IN series and then is connected to the GPIO-3-3 pin of the IN310 chip or the IN680 chip.
8. The earphone device of claim 2, wherein said IN310 chip or IN680 chip has at least one filter pin to which a filter circuit is connected, said filter circuit being for filtering interference signals IN digital radio signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320992754.4U CN220359317U (en) | 2023-04-27 | 2023-04-27 | Long-endurance ear-hanging tour guide explanation receiving earphone device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320992754.4U CN220359317U (en) | 2023-04-27 | 2023-04-27 | Long-endurance ear-hanging tour guide explanation receiving earphone device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220359317U true CN220359317U (en) | 2024-01-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320992754.4U Active CN220359317U (en) | 2023-04-27 | 2023-04-27 | Long-endurance ear-hanging tour guide explanation receiving earphone device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220359317U (en) |
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2023
- 2023-04-27 CN CN202320992754.4U patent/CN220359317U/en active Active
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