| 摘要 |
An electric firing device for fireworks comprising a circuit board ( 7 ) fixed inside of a mounting clip ( 8 ); a firing slot ( 6 ) set in the front of the circuit board ( 7 ); a resistance wire ( 5 ) welded on the circuit board ( 7 ) together with a conductive wire pair ( 9 ) and straddled on said U shaped firing slot ( 6 ); a firework lead wire slot ( 4 ) set on the mounting clip ( 8 ); and a lead wire propulsion stop plate ( 2 ) set on a top cover ( 1 ) and engaged with the mounting clip ( 8 ). The resistance wire ( 5 ) is made of a resistance wire with good electricity to heat conversion capability (such as tungsten wire, nichrome wire, constantan wire, and so on) and spirally-wound.
|
