超体现身 无电源无电池的LED 2


什么!不用连接电源,不需要电池,LED也能发光!不相信?看过来!

先上一组高清组图

 

你是否曾经想过将自己的身体作为电源?微型手电筒Lumen能够让你梦想成真。Lumen是一款超级迷你的手电筒,只要你动动手指,它就能发光。

它的设计者Ross Zhuravskiy表示,只要使用得当,这款小手电筒可以“永久”照明。

LED新闻图片 微型手电筒Lumen

手电筒Lumen无需电源,当它感应到温差时就会发光

LED新闻图片 微型手电筒Lumen

小电筒内装有TEG(热电发电机),以产生电流

Lumen装有热电发电机,一个陶瓷小棒,当它检测到温差即会产生电流。

它的工作原理非常简单,当你用手指触碰TEG,它的上下两端会形成温差,从而产生电流以点亮手电筒的灯泡。设计者Ross Zhuravskiy表示,人体的温度大约为98°F(华氏温度),周围环境温度大约为82°F,这样的温差能促使Lumen产生大约15 mA、3V的电流,足以点亮Lumen内置的一个5mm大小的CREE LED灯珠,光输出可达3000 mCd。当温差更大时,多余的能量则会被储存起来。

Lumen的外壳有两种材料可选,一种是铝,一种是钛,分别重约35克和45克。除了材料的不同之外,Lumen还分为普通版和高级版,高级版内置一管氚气,可以持续发光超过10年,因此,即使在漆黑的房间里,你也能借助氚气发光轻松找到这个“小家伙”。

下面是英文版的介绍,有兴趣的大牛可自行阅读。

About this project
Have you ever thought how much energy is wasted by humanity? Exactly, right now by You!
I’m absolutely sure that if we want to build a better world and leave next generations thriving earth we need to find alternatives to energy sources that pollute nature.

It’s easy to say: GO GREEN, a bit harder to THINK GREEN. Now I propose you to BE GREEN.

Let me introduce Lumen – flashlight that doesn’t need any external energy source except your warm touch 😉

Heat-activated light
WHAT IS LUMEN?
It is an ordinary flashlight with brightness comparable to your smartphone’s except his main feature – it doesn’t need batteries and virtually eternal.

HOW DOES IT WORK?
Lumen has relatively simple work principle – you touch TEG (Thermoelectric Generator) – small ceramic bar that can produce electric current when we provide temperature difference between upper and lower parts of TEG.

In my application difference between temperature of your body (about 98 °F) and environment (at least 82 °F) is enough to generate power for single led. Metal body of Lumen serve as a radiator.

To better understand the main principle look at diagram:

Courtesy of Power Practical
HOW MUCH POWER WE CAN HARVEST?
As you understand, we can’t power really high-output led just with touching small TEG.

However, when your temperature is 98 °F and air temperature is 82 °F Lumen produce about 15 mA@3v. When difference is bigger – excessive power is stored in a capacitor to power Lumen whenever you need it. Such amount of energy is enough to power 5 mm Cree led with 3000 mCd light output.

Lumen in action
LUMEN SPECIFICATIONS
Weight : ~ 35 gramms \ 1,2 oz for Aluminium version
Weight : ~ 45 gramms \ 1,5 oz for Titanium version
Dimensions: 40 mm x 10mm x 80 mm \ 1,6″ x 0,4″ x 3,2″
5mm ultrabright CREE led
Light output: 3000 mCd
TRITIUM LIGHT
Before you can use flashlight you need to find it! (Yep, I’m a fan of Captain Obvious)

How to help you to find it in a complete darkness? You can order Lumen with tritium vial – glass tube with a phosphor layer in them and tritium gas inside the tube. This tiny vial will produce light for over a decade. Just look at photo:

Lumen with tritium mark in a dark room
Tritium vials in a complete darkness
REWARDS
Lumen is available in 2 body materials: Titanium and Aluminium. Both are available with or without Tritium tubes.

4 types of Lumen
WHAT HAS ALREADY BEEN DONE?
Before I launched Kickstarter campaign I’ve created numerous prototypes to achieve maximum efficiency

Early prototype

Lumen internal parts outside the case
PRODUCTION PLAN

According to my plan I should start shipping Lument to bakers in a 3 month after the end of KS campaign.
P.S. This tiny flashlight is only a first step in my research of green energy sources. If you care about this – please support me. Can’t do this via pledge? I’ll be very grateful if you spread the word through the web: facebook, blogs, twitter, instagram – every repost make me closer to achieve my goal and all of us to a better place to live on.
Risks and challenges
I’ve built several prototypes and absolutely sure that I can produce product I’ve shown in video.

All electrical components are factory made. My work – aluminum body and soldering. And sure – the design.

As any kickstarter project – I can experience temporary difficulties so some delays are inevitable. Though I have experience in mass production and will handle all problems in a timely manner.


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