Beyond the power to go without power LED lights come out

Have you ever thought about using your body as a power source? Mini flashlight Lumen can make your dreams come true. Lumen is a super mini flashlight, do not connect the power supply, do not need a battery, as long as you move your fingers, it will be able to shine. Its designer, Ross Zhuravskiy, said that as long as the proper use of this small flashlight can be permanent lighting.

The flashlight Lumen does not need a power supply, it will shine when the temperature is sensed

A small flashlight is equipped with a TEG (thermoelectric generator) to generate an electric current

The Lumen is equipped with a thermoelectric generator, the ceramic rod, when it detects a temperature that produces a current. Its working principle is very simple, when you touch the TEG with your fingers, it will form a temperature difference between the upper and lower ends, resulting in the current to light the flashlight bulb. Designer Ross Zhuravskiy said, the body temperature is about 98 degrees (F degrees Fahrenheit), the ambient temperature is about 82 DEG F, the current temperature can make Lumen produce about 15 mA, 3V, Lumen built-in enough to light the size of a 5mm CREE LED lamp, the light output can be up to 3000 mCd. When the temperature difference is greater, the excess energy is stored.

The shell of the Lumen is available in two materials, one is aluminum, the other is titanium, weighing about 35 grams and about 45 grams. In addition to the different materials, Lumen is also divided into ordinary version and an advanced version, a version of the built-in advanced tritium gas pipe, can continuously light for more than 10 years, therefore, even in the dark room, you can easily find the use of tritium gas emitting "small guy".

Tritium filled Lumen in the dark room

Currently, Lumen platform to raise public Kickstarter has been supported by more than 120 thousand U.S. dollars, and this figure is still increasing. According to the introduction of the Kickstarter page, the event will be launched in February 2016 to supporters around the product. (Chinese LED net Flora)

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