According to foreign media reports, at the recent "Novice Inventor Conference" (GGC), a "gravity electric light" invented by a US graduate student won the second prize. "Gravity lights" rely on gravity to generate electricity, which is equivalent to a 12-watt fluorescent lamp and has a long service life.
Clay-Malton from Virginia, USA, received a master's degree from Virginia Tech last year. His research topic is a luminaire made of light-emitting diodes, named "Gravia", which is actually a column made of acrylic material at a height of just over 4 feet (about 1.21 meters). body. The principle of illumination of such a luminaire is that the weight on the luminaire drives the rotor to rotate when it is slowly falling, and the electric energy generated by the rotation will energize the luminaire and cause it to illuminate.
This luminaire has a luminous flux of 600 to 800 lumens (equivalent to the brightness of a 12 watt fluorescent lamp) and lasts for 4 hours. To turn on the luminaire, the operator simply moves the weight on the lamp from the bottom to the top and places it in the top groove. The weight is slowly lowered, and in just a few seconds, the LED luminaire is illuminated.
Clay-Maulton says that operating such a lamp is of course more troublesome than pressing a switch, but it is still acceptable and more interesting, which is like winding a classic clock or sipping a cup of delicious coffee. Maulton estimates that the life of the Gravia lamps can reach more than 200 years. At present, this kind of luminaire named "Gravia" has been applied for and patented.
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