CN2177512Y

CN2177512Y - Electronic firecrackers

Info

Publication number: CN2177512Y
Application number: CN 93241088
Authority: CN
Inventors: 宋金昌
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-10-08
Filing date: 1993-10-08
Publication date: 1994-09-21
Anticipated expiration: 2003-10-08

Abstract

The utility model relates to an electronic firecracker, which is composed of an ignition heator, a monostable delay circuit, a firecracker sound generating circuit, a power amplifier circuit, a loudspeaker, a sound box, a flash control driving circuit, firecrackers and a DC power supply, etc. With the adoption of the ignition heator, the monostable delay circuit and the flash control driving circuit, the utility model can simulate the firecracker ignition with fire, can send out sound like traditional firecrackers and has the flash effect that sound and light can rotate up and down by turns synchronously. The utility model has the advantages of lifelike appearance, simple circuit and low cost, and can be the best substitute of the traditional firecracker.

Description

Electronic firecrackers

Firecrackers are one of articles for daily use in China's people's lives, celebrate a festival whenever year, and on the celebrating date, people like setting off firecracker and increase red-letter day and celebrating atmosphere; Mars four flies during common then firecracker setting-off, and dense smoke fills the air, and accidents such as the fried blind's eyeball of trick usually appear wound in not only fire hazardous but also contaminated environment.In many big cities No Fireworks, the substitute of some traditional firecrackers has appearred in market at present, as the recording of setting off firecrackers, electronic firecracker etc., but all exist acousto-optic can not be synchronously, simulate effect is poor, cost height, the uneasy congruent shortcoming of AC-powered.

The purpose of this utility model is to provide a kind of naked light to ignite to the public, and profile is very similar to traditional firecrackers to sound, has the electronic firecracker with sound synchronously simulating firecrackers flicker effect.

Electronic firecracker produces circuit by firecrackers sound, power amplification circuit, loudspeaker, audio amplifier, firecrackers are formed, also comprise: ignition heater is placed in the middle of the metal by negative resistance charactertistic thermistor R1 subsides, touches metal with naked light when setting off, and makes thermistor R1 be heated and afterwards triggers monostable flipflop; The monostable time delay circuit is by two nor gates of U1, resistance R 1-R5, capacitor C 1-C2 forms monostable flipflop, resistance sharply descended after ignition heater thermistor R1 was heated, the upset of triggering monostable flipflop, the 1 pin startup firecrackers generation circuit that the 4 pin output high level one tunnel of U1 meets U3 makes its sounding, another road meets 12 of U1,13 pin 11 pin output low levels of U1 after anti-phase connect 23 pin of U2, open flashing control circuit, it is produced and the synchronous flash effect of sound, time-delay automatically reset after 3-10 minute after the monostable circuit self-locking simultaneously, stop firecracker setting-off, delay time depends on C2, the size of R5 value; Flashing control circuit is by BCD decoder U6,4-16 decoder U2, NAND gate U5, resistance R 9-R10, capacitor C 10-C11 forms 16 the tunnel and takes turns on-off circuit, when output S0 connects at the place, be S1 then, then be S2 until S15, take turns to after the S15, " switch " got back to S14, S13 again and come and gone in turn until S0 and connect; The every road of flash driving circuit directly drives two miniature miniature bulbs of series connection with the positive-negative-positive triode; Firecrackers adopt transparent material to make, and the inside is hollow, puts a pea lamp in each firecrackers.

The audio amplifier of electronic firecracker can be made heart type or octagonal etc. with materials such as plastics and stainless steels, and loudspeaker, electronic circuit board are equipped with in the inside, and power switch is arranged on the panel, power supply indicator, volume potentiometer.

Describe the utility model in detail below in conjunction with accompanying drawing:

Fig. 1 is the utility model functional-block diagram;

Fig. 2 is the utility model contour structures schematic diagram;

Fig. 3 is the utility model circuit diagram.

With reference to Fig. 1,2, the utility model is by ignition heater 1, monostable time delay circuit 2, firecrackers sound generating circuit 3, power amplification circuit 4, loudspeaker 5, audio amplifier 6, flashing control circuit 9, flash driving circuit 8, firecrackers 7, dc source 10, power switch 11, power supply indicator 12, volume potentiometer 13 are formed; Hang a string firecrackers 7 below the audio amplifier 6, firecrackers 7 lowermost ends are ignition heater 1.

With reference to Fig. 3, monostable time delay circuit 2 is made up of two formula not gates, resistance R 1-R5, the capacitor C 1-C2 of U1, after being heated, triggers ignition heater R1 the monostable flipflop upset, output high level one tunnel starts firecrackers sound and produces circuit 3, by giving loudspeaker 5 sounding after power amplification circuit 4 amplifications, another road is anti-phase for low level unlatching flashing control circuit U2 through the nor gate of U1, makes acousto-optic synchronous; Monostable flipflop automatically resets after 3-10 minute with regard to the self-locking trigger once triggering the back, and delay time depends on the size of C2, R5 value.

With reference to Fig. 3, flashing control circuit utilizes binary-coded decimal decoder U6,4-16 decoder U2, NAND gate U5, resistance R 9-R10, capacitor C 10-C11 forms 16 the tunnel and takes turns on-off circuit, and the speed of flash of light can change binary-coded decimal decoder clock frequency, adjusts the whole R9 of acousto-optic synchronous adjustable and realizes; Flash driving circuit 16 tunnel every roads all adopt the positive-negative-positive triode directly to drive two bulbs of series connection, and bulb is contained in the firecrackers the inside in order, forms from top to bottom the firecrackers sound and light program of from bottom to top setting off in turn true to nature.Dc source 10 adopts dry cell 4 joint power supplies, can external direct current 6-12V.

The utility model has following advantage compared to existing technology:

1. all closely similar with traditional firecrackers to profile from igniting, sound, flash effect, and acousto-optic is synchronous, sound adjustable size, but repeated multiple times is seted off.

2. simple in structure, with low cost, be perfectly safe, can become the existing best substitute of firecrackers.

With reference to Fig. 3, monostable triggered upset after R1 was heated, and 2, the 4 pin output high level one tunnel of U1 connects 1 pin of U3, starts sound circuit; 12,13 pin that another road meets U1 11 pin of U1 after anti-phase connect 23 pin of U2, open flashing control circuit.3 pin of U5 connect 15 pin of U6, and 10 pin of U5 connect 10 pin of U6, and 8 pin of U5 connect 11 pin of U2, and 6 pin of U5 connect 15 pin of U2, and 2 pin of U6 connect 22 pin of U2, and 14 pin of U6 connect 21 pin of U2, and 11 pin of U6 connect 3 pin of U2, and 6 pin of U6 connect 2 pin of U2.

Claims

1, a kind of electronic firecracker is made up of firecrackers sound generation circuit, power amplification circuit, loudspeaker, audio amplifier, firecrackers; It is characterized in that also comprising:

A. ignition heater is pasted by negative resistance charactertistic thermistor R1 and is placed in the middle of the metal, touches metal with naked light when setting off, and makes the thermistor R1 back that is heated trigger monostable flipflop;

B. monostable time delay circuit, two nor gates by U1, R1-R5, C1-C2 forms monostable flipflop, resistance sharply descended after ignition heater thermistor R1 was heated, the upset of triggering monostable flipflop, the 1 pin startup firecrackers sound generation circuit that the 4 pin output high level one tunnel of U1 meets U3 makes its sounding, 12 of another road U1,13 pin 11 pin output low levels of U1 after anti-phase connect 23 pin of U2, open flashing control circuit, it is produced and the synchronous flash effect of sound, time-delay automatically reset after 3-10 minute after the monostable circuit self-locking simultaneously, stop firecracker setting-off, delay time depends on C2, the value size of R5;

C. flashing control circuit is formed 16 the tunnel by binary-coded decimal decoder U6,4-16 decoder U2, NAND gate U5, resistance R 9-R10, capacitor C 10-C11 and is taken turns on-off circuit, when output S0 connects at the place, be S1 then, then be that S2 or the like is until S15, take turns to after the S15, " switch " gets back to S14 again, S13 or the like comes and goes in turn until S0 and connects, the every road of flash driving circuit directly drives two small bulbs of series connection with the positive-negative-positive triode, firecrackers adopt transparent material to make, the inside is hollow, puts a pea lamp in each firecrackers, weaves into a string firecrackers with lead in order.

2, according to the described electronic firecracker of claim 1, it is characterized in that: audio amplifier can be made heart type or octagonal etc. with materials such as plastics and stainless steels, and be equipped with the inside power switch, power supply indicator, volume potentiometer on loudspeaker, electronic circuit board, the panel.