craftylittlemonkey wrote:Well that's disappointing to say the least! Sigh. Candles and early bed times it is then.
In all fairness, I am posting the following link about the toxicity found in LEDs that have been crushed. But think, who in their right mind is going to go around crushing the things?
Odonata wrote:Trad bulbs use more energy but they also some heat. Need to account for that. CFs and LED use less energy and don't provide heat.
Irene Kightley wrote:We lived without electric lighting for a while and candles and petrol lamps are lovely but really dangerous (we have cats) and you have to buy candles and petrol.
craftylittlemonkey wrote:Wow, exploding lights. Well that's bright at least.
thecheapguy wrote:i was thinking about making my own light fixture out of christmas lights and i could use resine to hold the leds in place for a cheap led fixture.
Today Lighting Science Group unveiled a new 60-watt replacement LED bulb that “meets or exceeds all of the criteria for the L Prize,” according to CTO Fred Maxik. If you’re not familiar with the competition, in order to win, the lamp must run better than 90 watts per lumen, produce more than 900 lumens, use less than 10 watts, last more than 25,000 hours, have more than a 90 color rendering index, and have a color between 2700-3000 K.
In addition, the winning bulb must have a target consumer price of $22 for year one, $15 for year two, and $8 for year three.
The government-sponsored L Prize competition has other requirements, such as domestic manufacturing minimums and the submission of 2,000 qualifying bulbs, but you get the general idea. It’s not an easy competition.
The new bulb unveiled today is currently being produced in quantities to be tested by the Department of Energy. No retail channel has been established, but the company expects to sell the bulb for $22. LSG told Jetson Green in an email the bulb has no mercury, lead, or other toxins.
LSG already has one of the best, low-cost LED bulbs on the market. The 60-watt replacement Definity LED — 850 lumens, 13 watts, 50,000 hours, price below $30 — is available to commercial/industrial customers and set for Home Depot shelves in May 2011. Another bulb worth watching is the Cree TrueWhite LED, which is not bright enough for the L Prize, but it’s very efficient and features good color.
Brenda Groth wrote:
although a bit pricey I like LED lights OVER CFL's and use a lot of them..
I have LED floods in my front porch lights and in my china and entertainment center cabinets..and use the china cabinet for nightlights as they light up 3 rooms at night (hubby has head injury and is accident prone, got to have night lights)...also we have found several LED nightlights that we use in bedrooms and bathrooms..they work nice.
plan to try to eventually replace as many of our bulbs as possible with LED's..the floods have the regular screw bottoms like normal lightbulbs and are avail at Walmart about $5 each
The only problem I have with these LED headlights (and I own a couple myself) is that they need batteries which all contain toxic substances that almost inevitably end up in landfill. Also, long term post TSHTF.... you won't be able to get batteries. I also once read in a david Suzuki book that the cost of energy you get from small batteries is 750 times as dear as grid energy.
I think people have gotten used to having more light than is really necessary. What does one need to do at night? Generally reading, knitting, what have you... all things people used to do just fine by candlelight. I can't think of anything I ever do that needs more than a little LED task lighting, with the exception perhaps of my shop where I find myself at night on some occasions needing to finish a project... tho I suspect that's more due to my lack of time management. The old folks with bad eyes go to bed at sundown anyway.
Casey Halone wrote:
You know how some phones are powered off the phone line? I wonder how much amps one could draw from that before problems arose?
peter dublin wrote:Interesting magazine, well illustrated, about Low Tech usage and advantages
(Chinese wheelbarrows etc! as well as solar power, pedal power with unusual takes...)
done by someone in Barcelona, Spain
Notice the article
..it says LEDs leading to greater energy use
(for example as used on lots of buldings for effect, and instead of neon lights, with lots of photo examples)