CN2162744Y

CN2162744Y - Multifunction radio

Info

Publication number: CN2162744Y
Application number: CN93202558U
Authority: CN
Inventors: 谭亦帆; 肖洪彬
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-02-04
Filing date: 1993-02-04
Publication date: 1994-04-20
Anticipated expiration: 2003-02-04

Abstract

The utility model discloses a multifunction speak-back radio. The utility model circuit is composed of an outer shell of the speak-back radio, a frequency modulation transmission main circuit board of an interphone, a receiving and speak-back reception main circuit board, an electric torch, an electronic clock, a compass, a calculator, a microphone, an externally inserted earphone, etc., wherein, the frequency modulation transmission main circuit board of the interphone, the receiving and speak-back reception main circuit board, the electric torch, the electronic clock, the compass, the calculator, the microphone, and the externally inserted earphone are arranged in the outer shell of the speak-back radio. Consequently, the utility model has functions of the interphone, the radio, the electric torch, the clock, the compass, a calculator, etc. The utility model can be used for communication in field construction, outgoing tour, etc. Effective radius for the speaking back function is 1.5 kilometers, and AM medium wave band broadcast, etc. can be listened in to through the radio function. The utility model has the advantages of small size and convenient carrying.

Description

Multifunction radio

The utility model relates to a kind of multi-functional intercommunication broadcast receiver.

The intercom of market sale now.Function singleness can not one-object-many-purposes, exceeds certain distance simultaneously, must change by exchange, and price is more expensive, is difficult to popularize average family and broad masses at present.

Task of the present utility model is exactly the multi-functional intercommunication broadcast receiver that will provide a kind of popular family expenses and field work to use, and requires one-object-many-purposes.Can possess intercommunication, radio reception, torch, electronic clock, calculator and six kinds of functions of compass, the convenient use in 1.5 kilometers radius.

Task of the present utility model is finished in the following way:

A kind of multi-functional intercommunication broadcast receiver receives main circuit board, torch, electronic clock, compass, calculator, microphone, loudspeaker, intercommunication change over switch, external earphone, power-supply battery etc. by intercommunication radio receiver shell, intercom frequency modulation emission main circuit board, broadcast receiver and intercom and forms.It is characterized in that: intercom frequency modulation emission main circuit board and radio reception intercommunication receiving lines plate are housed in the intercom radio receiver shell.Microphone, loudspeaker, intercommunication change over switch, intercommunication radio reception change over switch, earphone, battery are installed on it.Schematic circuit master-plans such as intercom, broadcast receiver, torch, electronic clock, calculator, control respectively, people can use several functions as required respectively or simultaneously.

Accompanying drawing 1 is the positive perspective view of material object of the present utility model; Accompanying drawing 2 is the edge-on structural representations that cut open of material object of the present utility model; Accompanying drawing 3 is intercom frequency modulation radiating portion basic circuit diagrams of the present utility model; Accompanying drawing 4 is that intercom of the present utility model receives and broadcast receiver part basic circuit diagram; Accompanying drawing 5 and accompanying drawing 6 are torch of the present utility model and calculator basic circuit diagram; Accompanying drawing 7 is basic circuit diagrams of electronic clock of the present utility model.

The utility model is described in further detail below in conjunction with accompanying drawing:

With reference to accompanying drawing 1, the utility model receives main circuit board 3, torch 4, electronic clock 5, compass 6, calculator 7, telescopic antenna 8, luminous indicating diode 9 and 10, microphone 11, earphone jack 13, level switch 14, loudspeaker 15, intercommunication change over switch 16, intercommunication radio reception change over

switch

19 and 20, calculator switch 21 and 22(21 for closing by intercommunication radio receiver shell 1, intercom frequency modulation emission main circuit board 2, broadcast receiver and intercommunication, and 22 for opening), parts compositions such as external earphone 23, power-supply battery 24.When using intercommunication function, earlier intercom level switch 14 is opened, pull out antenna 8, and intercommunication radio reception change over switch is allocated to 19 positions, at this moment, light-emitting diode 10 is luminous, and intercom is in accepting state.If a side holds intercom and talks to the opposing party, need press intercommunication change over switch 16 earlier, at this moment, light-emitting diode 10 goes out, and light-emitting diode 9 is bright simultaneously, illustrates that intercom is in emission state.If speech this moment can receive that vice versa to convenient from loudspeaker or earphone.When using the MW receiver function, intercommunication broadcast receiver change over switch is allocated to 20 position, at this moment, light-emitting diode 10 is luminous, and turn tuning knob 12 just can be received the broadcasting of AM medium wave band.Use the torch function, only need push to switch 17.When using electronic clock and need make loudspeaker 15 quarter-bells, can start and allot the button 18 of electronic clock 5.Guide for use pin function needs needle is pointed to the north.When using calculator function, switch can be operated from the position that OFF21 is pushed into ON22.

With reference to accompanying drawing 3, be intercommunication broadcast receiver frequency modulation radiating portion basic circuit diagram.When change over switch 16 is pressed, connect the radiating portion power supply, LED 10 is luminous.When Electret condenser microphone 11 is sensed sound signal, amplify through BG1 and LM386, variable capacitance diode D1 capacity in the oscillating circuit that change is made up of BG2 etc., form the frequency-modulated wave of 44MHZ, through BG3, BG4 amplifies, the BG5 excitation, through BG6, BG7 power amplification, radiate by TX, the emission effective radius is 1.5 kilometers again.Modulation frequency and power can be done corresponding change as required.

With reference to accompanying drawing 4, be wireless reception of intercommunication and wireless basic circuit diagram.This figure is in the intercom operating state.After receiving FM signal, forms the 44MHZ high frequency by BG1 and amplifies, again by CXA1019M finish that FM receives, tuning, frequency conversion, in put, frequency discrimination, audio frequency amplification, and have the noise elimination function.When intercommunication radio reception change over switch K1 when 19 are allocated to 20 positions, the AM(medium wave) radio reception partly finished by CXA1019M amplitude modulation.

With reference to accompanying drawing 5, be torch lighting circuit schematic diagram, small electric bulb adopts the kind of rated voltage 6V electric current 0.1A.

With reference to accompanying drawing 6, for the electronic calculator basic circuit diagram, form cardiac component by TMS0972NL, be total to positive scanning type LED display screen by 8 and serve as the data demonstration, also can operate night.

With reference to accompanying drawing 7, be the electronic clock basic circuit diagram, adopt integrated package SG2333, show by LCDs.In the time of can reading, minute, second, year, month, day.Regulate button, can pass through loudspeaker 15 quarter-bells.

The utility model contrast prior art has the following advantages:

1. one-object-many-purposes, easy and simple to handle is particularly suitable for short distance contact and field work such as power construction and the tourism etc. of family life as going out, purchasing.

2. little, easy to carry, the round the clock use, very flexible of volume.

Claims

1, a kind of multi-functional intercommunication broadcast receiver, receive parts such as main circuit board 3, torch 4, electronic clock 5, compass 6, calculator 7, microphone 11, loudspeaker 15, intercommunication change over switch 16, intercommunication radio reception change over switch 19 and 20, external earphone 23, power-supply battery 24 by intercommunication radio receiver shell 1, intercom frequency modulation emission main circuit board 2, broadcast receiver and intercommunication and form, it is characterized in that being equipped with in the intercommunication radio receiver shell 1 intercom frequency modulation emission main circuit board 2 and radio reception, intercommunication reception main circuit board 3.

2, according to the described a kind of multi-functional intercommunication broadcast receiver of claim 1, it is characterized in that being equipped with torch 4, electronic clock 5, compass 6 and calculator 7.

3,, it is characterized in that receiving on the main circuit board 3 microphone 11, loudspeaker 15, intercommunication change over switch 16, intercommunication radio reception change over switch 19 and 20, external earphone 23, power-supply battery 24 are installed in intercom frequency modulation emission main circuit board 2 and broadcast receiver, intercommunication according to the described a kind of multi-functional intercommunication broadcast receiver of claim 1.