Posilight - look for it in your grocer's freezer


February 16, 2010

A Posilight mono LED strip

A Posilight mono LED strip

If you’re trying to reduce your carbon footprint, replacing traditional fluorescent tube lighting with more energy-efficient alternatives is a good way to start. And when most of us think fluorescents, we think ceiling lights. The fact is, though, a great deal of the world’s fluorescent lights are installed somewhere else - in grocery store coolers and freezers. The creators of a new product called Posilight are hoping to replace those tubes with their own LED-based product that will save power, save money, and save food.

The Posilight is a strip of LED’s, mounted on a unit the same shape and size as a fluorescent tube. That unit and its power supply plug straight into a traditional fluorescent fixture, so no retrofitting is required. It is said to have several advantages over old-school fluorescents:

  • It uses up to 85% less energy
  • It lasts for approximately 50,000 hours
  • Proprietary Near Field lighting technology results in a more even light, so the merchandise looks better
  • It gives off less heat, so the cooler’s compressor doesn’t have to work as hard to compensate for it
  • Because it gives off no ultraviolet rays, the food it’s illuminating will last longer
  • It’s mercury- and lead-free
  • The Posilight is available in a variety of lengths, and in mono (one-strip) and duo (two-strip) versions. It's very reminiscent of a product we've seen on Gizmag before, offered by ReLED Systems.

About the Author
Ben Coxworth An experienced freelance writer, videographer and television producer, Ben's interest in all forms of innovation is particularly fanatical when it comes to human-powered transportation, film-making gear, environmentally-friendly technologies and anything that's designed to go underwater. He lives in Edmonton, Alberta, where he spends a lot of time going over the handlebars of his mountain bike, hanging out in off-leash parks, and wishing the Pacific Ocean wasn't so far away. All articles by Ben Coxworth

Cool, though earthLED already has a similar product (It is nice to see more companies offering such technology)

Jason Miller

Hi.. these numbers are wrong! LED are not more efficient then florescent tubes. A florescent tube gives 50-100 lumens/Watt where LED\'s are 20-80 lumens/Watt. Typical values are incandescent: 14 lumens/Watt, LED: 60 lumens/Watt, florescent: 90 lumens/Watt.

LED\'s do have a much longer lifetime, so they are better for use in hard to reach areas. But they will produce residual heat then a florescent tube giving out the same amount of light. Where LED\'s also win, is that they are directional, so the light goes where you want it; but in a fridge application this is actually not ideal, and what manufactures try to do is mimic the lighting of the florescent tubes.

These numbers are easy to check.. wikipedia if you must; see \"Luminous efficacy\". I\'m disappointed that Mr. Coxworth didn\'t check his sources before publishing!

Rodger Evans

Rodger, you\'re thinking of conventional LEDs. Superbright LEDs are a whole different animal. Luxeon beat 100 lumens per watt years ago and Cree recently broke the 200 lumens per watt barrier.

Something else that somebody should manufacture is an alarm for freezer doors that stay open more than a few seconds. I get steamed whenever I see some nitwit standing there with the freezer door open for at least a minute, reading the box. Hey, moron, here\'s an interesting fact you may not know about glass. It\'s transparent! Read through the door! Or if you must, take the package out, close the door then read the package.


Just saw this in QFC the other day, coupled with motion sensors, so it only turned on when someone was standing in front of the door. Also its kind of fun to walk down an aisle and have each door light up for you as you approach!


@Gadgeteer: Here's another thing about glass - it gets fogged over, and makes it not so transparent. Also, there are some people that have compromised vision, wear eyeglasses and looking through another layer of not-optical quality glass makes it hard to read, especially fine print. Your last sentence is the only logical compromise, but sometimes people are taking this carbon-footprint thing just a little too far. Electricity didn't get more expensive, the providers got greedier...and so far, the public seems willing to be continually raped.

Patrick Dennison
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