Abstract: An automatic alarm device for dripping injection fluid bottle, which is installed in the bottle neck portion, and it comprises of a case body, a buoyant power switching device, a buzzer, and a flashing device.

Abstract: A music tooth brush comprises a hollow brush hair stock, a touch switch containing the hollow part of said brush hair stock, a brush hair board floatingly mounted on the brush hair stock, and a hollow grip handle bar containing the music IC, batteries and sound-generating plate. When the user brushes his teeth with the said tooth brush, the brush hair board can touch and press the touch switch in the brush hair stock to make the circuit in the grip handle bar become electrically conductive, so the sound-generating plate automatically generates the children's favorite music to eliminate their sense of ill feeling against brushing their teeth and further to foster in children a good habit of brushing their teeth after eating.

Abstract: A vehicular internal ventilating device, which includes: an air inlet device, it sucks in fresh air without direct blowing to the driver of passengers; an air exhaust device, it expels the vehicular internal used air and guides the flow direction of the fresh air, and a power supply. The air inlet device sucks in fresh air from the external top front end roof just above windshield and blows it upwardly to the internal top front end ceiling of a vehicle, then, the reflected fresh air current comes to the front seats and the back seats in a curved flow line style and goes out through the exhausting device from the lower side of the back seats. In this way, even the windows of a vehicle are tightly closed, fresh air ventilation and passenger comfortness can still be maintained.