CN2147029Y - Fire-cracker string device without explosion - Google Patents

Abstract

The utility model relates to a firecracker string device without explosion, characterized in that a unit firecracker is formed by that the inner of a light-permeable firecracker case is combined with small blinking bulbs; two units as a group are respectively formed to a bunch by main conducting wires; the upper end of the main conducting wire extends to a sound electric circuit and a light electric circuit in a control box, and the sound electric circuit and the light electric circuit are connected with a printed circuit board; when the circuit is conducted, the firecracker sound can be given off continuously, and the firecrackers of each units give off the glittering without explosion from top to bottom at the same time, so as to reach the same effect with traditional sound and light. The utility model has the advantage that the paper flying in the sky and the smog permeating in the sky can be avoided when firecrackers blast.

Description

Fire-cracker string device without explosion

The utility model relates to a kind of firecracker device, refers in particular to a kind of without explosion fire-cracker string device.

In some country, comprise China, in festival celebration, celebrating day, general traditional custom all will be seted off firecracker, to increase happy atmosphere.But when setting off firecracker, not only can produce the paper scrap of a large amount of contaminated environment, simultaneously also send strong gas, contaminated air, infringement people's health in addition, also someone will be wound because of carelessness when setting off firecracker, can cause fire sometimes even also, works the mischief.

The purpose of this utility model is to overcome the shortcoming of above-mentioned traditional firecracker, and provide a kind ofly can send the sound identical and reach flash effect and without explosion fire-cracker string device with traditional firecracker explosion time.

The purpose of this utility model is achieved in that the firecracker of some unit is by being constituted in conjunction with the flash of light miniature bulb in the housing, wherein, housing is the firecracker shape of being made by the plastic cement of light-permeable, with two unit firecrackers is one group, be connected on the main traverse line successively with flash of light miniature bulb both positive and negative polarity lead, connect aforementioned every group of unit firecracker on main traverse line successively, its upper end is stretched in the control box, to connect sound, the optical circuit on the printed circuit board (PCB); When this power on circuitry, can send the firecracker sound identical continuously with traditional firecracker explosion time, and the firecracker of each unit from bottom to top sends without explosion flash of light successively synchronously, reach the sound and light program identical, do not produce and there is the phenomenon that firecracker explosion time paper scrap is existed everywhere, smog is boundless and indistinct with traditional firecracker.

Advantage of the present utility model is: the profile of profile of the present utility model and traditional fire-cracker string is identical, can reach the sound and light program identical with traditional firecracker during use, and free from environmental pollution, also can contaminated air; Safe in utilization, avoided injury, the also unlikely fire that causes to the people; A control box also can connect a string above firecracker, can send the sound and light program of firecracker synchronously; In addition, the utility model is also reusable, can save money, and is economical and practical, avoids waste.

Fig. 1 is an outside drawing of the present utility model.

Fig. 2 is the exploded view of unit firecracker among Fig. 1.

Fig. 3 is the connection diagram of every group of unit firecracker of the present utility model.

Fig. 4 is an acousto-optic circuit block diagram of the present utility model.

Fig. 5 is acousto-optic circuit figure of the present utility model.

Fig. 6 is each pin action diagram of voice IC of the present utility model.

Below just in conjunction with Figure of description and embodiment, the utility model is described in further detail.

As shown in Figure 1 and Figure 2, fire-cracker string 1 of the present utility model is by the firecracker 2 usefulness main traverse lines 3 combination bunchiness of some unit, and a control box 4 is arranged at the top, and as seen, its outward appearance roughly firecracker with traditional is identical.Wherein, each unit firecracker 2 is by 6 be combined intos of housing 5 and flash of light miniature bulb; Housing 5 is shapes of being made firecracker by the light-permeable plastic cement, and flash of light miniature bulb 6 is arranged within it, and both are connected by the both positive and negative polarity lead of flash of light miniature bulb.As shown in Figure 3, be one group with two unit firecrackers 2, be connected to the both positive and negative polarity lead of main traverse line 3, be in turn connected into string, the upper end of main traverse line 3 extend in the lighttight control box 4, is connected in the acousto-optic circuit (as shown in Figure 5) of printed circuit board (PCB) 7.

Fig. 4 is the block diagram of the acousto-optic circuit on the printed circuit board (PCB) 7 in the control box 4 of utility model, and it drives display circuit 16 by power supply 8, mu balanced circuit 9, starting circuit 10, voice IC11, sound out-put circuit 12, loudspeaker 13, light timer 14, light control loop 15 and light and is formed.Wherein, power supply 8 is the dc source of 12V or 24V.Entire circuit is by starting circuit 10, voice IC11, passes through sound out-put circuit 12 again, is connected to loudspeaker 13 outputs.The control signal starting light timer 14 of voice IC11 output simultaneously, then its timing signal drives display circuit 16 and be connected to light, to demonstrate the flash effect of firecracker again through light control loop 15.Because the starting of sound out-put circuit 12 and light timer 14 is controlled by voice IC11, then the flash effect of cracker sound and firecracker blast all can be finished synchronously.

As shown in Figure 6, the voice IC11 in the utility model is existing voice IC integrated circuit, and the effect of its each pin is as follows:

1 pin (AUD): loudspeaker output;

2 pin (BUSY): signal output, as long as sound one comes out, BUSY produces pulse, to supply with light timer 14;

3,4 pin (TEST): test is used;

5 pin (STOP): signal output, after message finishes, the of short duration pulse of coming out once;

6 pin, 7 pin (BD): connect loudspeaker 13;

8 pin (GND): ground connection;

9 pin (OSC): after the pulse input, utilize the adjustment of a variable resistance, to adjust speed of sound;

10 pin (TRG1): be used for long string firecracker, but continuous action after the triggering, power supply can fail after cutting;

11 pin (TRG2): be used for long string firecracker, can only trigger once.

12 pin (TRG3): be used for the single-tone firecracker, can only trigger once.

13,14,15 pin (TRG4,5,6): be used for short string firecracker, can only trigger once.

Claims (2)

1, a kind of without explosion fire-cracker string device, it is characterized in that firecracker by being constituted in conjunction with the flash of light miniature bulb in the housing, housing is the firecracker shape, and is to be made by the plastic cement of light-permeable, firecracker with two unit is one group, with the flash of light miniature bulb positive and negative electrode be connected in turn on the main traverse line; Connect described every group of unit firecracker on main traverse line successively, sound, the optical circuit that connects in the control box on the printed circuit board (PCB) stretched in its upper end.

2, according to the without explosion fire-cracker string device described in the claim 1, it is characterized in that sound, the optical circuit on the printed circuit board (PCB) is by starting circuit, voice IC, be connected to loudspeaker output through sound out-put circuit; The control signal starting light timer of voice IC output simultaneously, timing signal is connected to light again and drives display circuit via the light control loop; The starting of sound out-put circuit and light timer, IC is controlled by voice.

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