Lighting/sounding device activated by inflation of balloon
A lighting/sounding device activated by inflation of a balloon includes a lighting lamp/sounder, a battery, and a housing at least covering the lighting lamp/sounder. The housing includes an inlet end, an outlet end, and an air channel connecting the inlet end and the outlet end to form a through passage for air flow within the housing. The lighting lamp/sounder is provided within the air channel and has a sealing device for sealing off the air channel. When the balloon is not inflated, the lighting lamp/sounder cannot be activated; after the balloon is inflated, a pressure difference generated between inside and outside the balloon pushes the lighting lamp/sounder towards the outer end of the air channel and seals the air channel; and, when the air channel is sealed up, an electric circuit of the lighting lamp/sounder is closed and the lighting lamp/sounder is activated to operate.
1. A lighting/sounding device activated by inflation of a balloon, wherein the lighting/sounding device is provided inside a balloon and is fixed onto an inner wall of the balloon by an external cover with an exhaust port connected to an outlet end of the lighting/sounding device to form an air channel; and, a piercing device is provided where the lighting/sounding device contacts the inner wall of the balloon within the external cover, and has a pointed tip to pierce the inner wall of the balloon when the external cover is fixed onto the lighting/sounding device to form the air channel.