Lightbulb 2.0: Double the Life, Halve the Materials

In Design Boom's RE-think RE-cycle competition, Mahendra Chauhan and Sanjay Rajput from India propose a novel, extremely TreeHugger way to double the life of the common lightbulb.Their concept: a typical lightbulb is 35 grams, 0.5 grams of which is the tungsten filament. The tungsten fails, the bulb is pitched, 35 grams of materials out the window. Add an extra filament and 2 extra contacts and when the first filament fails, you can rotate the bulb 90 degrees and get a whole other lifetime from the same bulb.

Old way: 35 grams. x number of hours. Effort to buy, change bulb.
New way: 35.5 grams. 2x number of hours. Less effort to "change" bulb.

Now that's what we're talkin' bout people! Nice work Mahendra
and Sanjay! And good for ::DesignBoom for making this contest happen.

::Contest Entry Here

One thought: It looks to TreeHugger like you could just as easily
have 3 filaments and 3 sets of contacts. That would triple the life
of the bulb. Is this thinking flawed? Please comment below.

Like this kind of thinking? Check out some of our recent posts
by John Laumer.

Getting more life from your coffee bodum
Lifecycle thinking and your multi-function Swiss-Army knife
Building your own hybrid desklamp

[by Graham Hill]