| 摘要 |
PROBLEM TO BE SOLVED: To obtain a foldable firework for facilitating stocking and transportation and applicable to sacred fire or bonfire during Bon Festival by applying powder for firework to the inner or outer surface of a tube made of a combustible paper, e.g. a corrugated board, foldable along a plurality of folding lines. SOLUTION: A tube 1 made of a relatively thick combustible paper, e.g. a corrugated board, is formed into an arbitrary shape, preferably square tube. A folding line 2 is made at the corner of the tube 1 by perforation, for example, in order to facilitate folding. Powder 3 is applied to the inner and/or outer surface of the tube 1 and a fuse 4 is put to the upper end part thereof. When the fuse 4 is ignited while setting the tube 1 on the ground surface, the powder 3 explode and firework can be appreciated. When powder 3 for toy fireworks is employed, the fireworks is sustained for a long time and thereby it is applicable to sacred fire or bonfire during Bon Festival.
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