CN2593479Y - Mobile phone vehicular converting box - Google Patents
Mobile phone vehicular converting box Download PDFInfo
- Publication number
- CN2593479Y CN2593479Y CN 02277879 CN02277879U CN2593479Y CN 2593479 Y CN2593479 Y CN 2593479Y CN 02277879 CN02277879 CN 02277879 CN 02277879 U CN02277879 U CN 02277879U CN 2593479 Y CN2593479 Y CN 2593479Y
- Authority
- CN
- China
- Prior art keywords
- mobile phone
- vehicle
- amplifier
- power amplifier
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
Abstract
The utility model discloses a mobile phone vehicular converting box, which comprises a casing body and a connecting line, wherein, the housing of the casing body is made of sheet metal, and the connecting line is provided with a microphone ans two plugs. The two plugs are respectively used for connecting to an earphone jack of a mobile phone and an input jack of the converting box. The casing body is provided with a circuit board inside. The circuit board comprises a power amplifier circuit, an input jack and an audio frequency switching circuit. An output terminal of the input jack is connected to an input terminal of the power amplifier circuit. The audio frequency switching circuit is connected between an output terminal of the power amplifier circuit and a vehicle-carried acoustic enclosure. The audio frequency switching circuit reaches the vehicle-carried acoustic enclosure through the mobile phone audio signal or the vehicle-carried audio signal. When the mobile phone vehicular converting box is connected with a mobile phone for use, the voice signal dialed to the mobile phone can be played through the vehicle-carried acoustic enclosure directly, and the driver can answer directly through the microphone, achieving both safe driving and conversation, and preventing traffic accidents caused by answering the mobile phone by one hand when driving.
Description
Technical field
The utility model relates to a kind of mobile phone car and carries boxcar.
Background technology
Along with developing rapidly of mobile communication, mobile phone has become the most important means that people exchanged and obtained information mutually, therefore some special occasion guarantee when driving the normal use of mobile phone seem come more important.But when driving, can make the operation of driving very difficult, and cause traffic accident easily, forbid when therefore driving using mobile phone with hand-held with hand-held use mobile phone.Although also there is the minority automobile to be furnished with car phone, there is the shortcoming that price height, utilization rate are low, can not share original phone number in car phone, is difficult to promote the use of.
The utility model content
The purpose of this utility model is to overcome the deficiency of prior art and provides a kind of mobile phone car simple in structure, easy to use to carry boxcar, with guarantee when driving can be safely, make things convenient for answering cell phone.
For realizing above-mentioned purpose, the technical scheme that the utility model adopted is: it comprises box body and connecting line, box case adopts metallic plate, connecting line has a microphone and two plugs, two plugs are used for linking respectively the earphone jack of mobile phone and the input jack of boxcar, be provided with circuit board in the box body, described circuit board comprises power amplifier, input jack, frequency switch circuit, the output of input jack is connected to the input of power amplifier, frequency switch circuit is connected between the output and vehicle-mounted audio amplifier of power amplifier, and frequency switch circuit selects one the road to vehicle-mounted audio amplifier from handset audio signal and onboard audio signal.
Mobile phone car is carried boxcar to link to each other with mobile phone, mobile phone is set to automatic-answering back device, when the driver drives like this if there is phone to throw mobile phone into, the voice signal of squeezing into mobile phone can directly be played back by vehicle-mounted audio amplifier, the driver can directly reply facing to microphone, accomplish that safety drives and conversation is neglected neither, cause traffic accident when preventing to drive because of with a hand answering cell phone time.
Below in conjunction with drawings and the specific embodiments structure of the present utility model is further described.
Description of drawings
Accompanying drawing 1 is the circuit diagram of the utility model preferred embodiment.
Embodiment
Referring to Fig. 1, this mobile phone car carries boxcar and directly connects the interior 12V power supply of car, P1, P2, P3 is the connecting line of band microphone, P1 is a microphone, can adopt microphone or other highly sensitive microphone of band incorporated amplifier in the existing handset earphone, and place steering wheel, on the ceiling in instrument board or driver's cabin the place ahead, P2 is a plug of receiving the handset earphone jack, P3 is a plug of receiving boxcar, J1 is an input jack, power amplifier integrate circuit TDA2030A and peripheral circuit thereof are formed power amplifier, potentiometer R4, capacitor C 4 is formed the input circuit and the volume control circuit of power amplifier, and the handset audio signal is from jack J1 input, through potentiometer R4, capacitor C 4 is delivered to the input of power amplifier TDA2030A, potentiometer R4 can regulate the handset audio signal magnitude of input, and the audio signal through amplifying is from capacitor C 7 outputs; Operational amplifier U2A, U2B, triode N1, relay J 2, J3 are the main frequency switch circuit of forming, wherein amplifier U2A is a voltage amplifier, the signal of capacitor C 8 from the sampling of power amplifier output circuit amplified, the output signal of its amplifier is delivered to the comparator anode that is made of amplifier U2B, the output signal of comparator is delivered to the base stage of triode N1 through resistance R 15, by N1 control relay J2, J3, select to deliver to one the tunnel vehicle-mounted audio amplifier broadcast from handset audio signal and onboard audio signal.Having used two relay J 2, J3 among this figure, is because vehicle-mounted audio amplifier one end of some automobile does not join with power supply ground, if an end of vehicle-mounted audio amplifier joins with power supply ground, then can adopt simpler connected mode.
Using method of the present utility model is summarized as follows: mobile phone car is carried boxcar link to each other with mobile phone, mobile phone is set to automatic-answering back device, this moment is if there is phone to throw mobile phone into, the voice signal of squeezing into mobile phone is input to power amplifier TDA2030A from jack J1, capacitor C 8 is delivered to the comparator anode that is made of amplifier U2B from the signal of power amplifier output circuit sampling after amplifying, comparator output high level, triode N1 conducting, relay J 2, the J3 adhesive, whether work regardless of vehicle audio this moment, the voice of squeezing into mobile phone all pass through vehicle-mounted audio amplifier and play, the driver can directly reply facing to microphone P1, and after having conversed, triode N1 ends, relay J 2, J3 discharges, and vehicle audio returns to original state.
Claims (2)
1, a kind of mobile phone car carries boxcar, it is characterized in that: it comprises box body and connecting line, box case adopts metallic plate, connecting line has a microphone and two plugs, two plugs are used for linking respectively the earphone jack of mobile phone and the input jack of boxcar, be provided with a circuit board in the box body, described circuit board comprises power amplifier, input jack, frequency switch circuit, the output of input jack is connected to the input of power amplifier, frequency switch circuit is connected between the output and vehicle-mounted audio amplifier of power amplifier, and frequency switch circuit selects one the road to vehicle-mounted audio amplifier from handset audio signal and onboard audio signal.
2, mobile phone car according to claim 1 carries boxcar, it is characterized in that, described frequency switch circuit comprises: an amplifier is used to amplify the sampled signal from power amplifier output; One comparator is used for that the output signal and of amplifier is set current potential and compares, and exports a comparison control signal; Switch switching circuit is used under comparison control signal control, selects one road signal to receive vehicle-mounted audio amplifier from handset audio signal and onboard audio signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02277879 CN2593479Y (en) | 2002-12-13 | 2002-12-13 | Mobile phone vehicular converting box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02277879 CN2593479Y (en) | 2002-12-13 | 2002-12-13 | Mobile phone vehicular converting box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2593479Y true CN2593479Y (en) | 2003-12-17 |
Family
ID=33741363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02277879 Expired - Fee Related CN2593479Y (en) | 2002-12-13 | 2002-12-13 | Mobile phone vehicular converting box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2593479Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102572632A (en) * | 2011-12-21 | 2012-07-11 | 上海博泰悦臻电子设备制造有限公司 | Vehicle-mounted information system device with earphone interface |
-
2002
- 2002-12-13 CN CN 02277879 patent/CN2593479Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102572632A (en) * | 2011-12-21 | 2012-07-11 | 上海博泰悦臻电子设备制造有限公司 | Vehicle-mounted information system device with earphone interface |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2593479Y (en) | Mobile phone vehicular converting box | |
| CN201550108U (en) | Vehicle-mounted Bluetooth telephone device | |
| CN200981505Y (en) | Vehicle mounted communication device connector | |
| CN203368474U (en) | A convenient and fast type vehicle-mounted Bluetooth system, an automobile seat headrest | |
| CN201197139Y (en) | Telephone vehicle-mounted receiving device | |
| CN201063799Y (en) | Vehicle-mounted telephone | |
| CN201300785Y (en) | Electric vehicle provided with hand-free talking function | |
| CN2697952Y (en) | Speaker device for vehicle carried mobile telephone set | |
| CN1592446A (en) | On-vehicle telephone device for automatically identifying and wireless connecting to mobile phone | |
| CN213718207U (en) | Short-distance vehicle-mounted voice interaction system | |
| CN2297822Y (en) | Multifunctional wireless mobile telephone hand-held-free receiver | |
| CN2511573Y (en) | Multifunctional steering wheel | |
| CN2563859Y (en) | Action telephone hand free earphone device fixed on car | |
| CN2762454Y (en) | Radio MP3 and handfree telephone device | |
| CN202014360U (en) | Solar energy automobile bluetooth mobile phone sound box having FM emission function | |
| CN201113998Y (en) | Blue tooth mobile phones talker mounted on rear mirror of vehicle | |
| CN2730029Y (en) | Vehicle mobile phone handfree and MP3 radio transmission broadcast device | |
| CN205105203U (en) | Vehicle carried communication device | |
| CN201566556U (en) | Coach middle door calling circuit | |
| CN211892846U (en) | Automobile instrument and automobile | |
| CN2347324Y (en) | Automotive steering wheel mobile telephone | |
| CN201331844Y (en) | Speed limiting reminder | |
| CN2388717Y (en) | Integral portable phone charger for vehicle | |
| CN2666057Y (en) | Vehicle-carrying telephone apparatus of automatic recognition and wireless connecting with mobile phone | |
| CN2591888Y (en) | Vehicle hand-free phone |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |