| 摘要 |
An illuminating/sounding device used for balloon inflation startup comprises an illuminating lamp/sounder, a battery (4) and a casing (5). The casing (5) at least covers the illuminating lamp/sounder. The casing (5) has an air inlet (51), an air outlet (52) and an air channel (6). The air channel (6) connects the air inlet (51) and the air outlet (52) to form a penetrating airflow channel in the casing (5). The illuminating lamp/sounder is provided in the air channel (6). The illuminating lamp/sounder has a sealing device, through which the illuminating lamp/sounder seals the air channel (6). Before a balloon is inflated, the illuminating lamp/sounder cannot be started. After the balloon is inflated, a pressure difference formed between the inner side and the outer side of the balloon enables the illuminating lamp/sounder to move toward an external end of the air channel (6) and seal the air channel (6), and a circuit of the illuminating lamp/sounder is switched on when the air channel (6) is sealed, so that the illuminating lamp/sounder is started to work. |
