Throw the great invention into the dustbin? It's time to pour cold water on LED!

A 84 foot tall Norway spruce is a 5 meter long line 30000 LED lights with covered, let these people excited. They finally made it. You said on the solid-state lighting and clapping, Edison invented the incandescent light bulb into the dustbin. Over the past 74 years, incandescent bulbs have decorated the tree in New York's Rockefeller Center each year, sending warmth to the season. And this year, we have a solid state lighting technology, which will not waste a lot of electricity every day before lighting the tree by January 2008.

Reported using such LED to replace the incandescent lamp can be the energy consumption of the tree every day is reduced from 3510 to 1297kWh. The energy saved is equivalent to the energy consumed by a 2000 square foot house in a month.

In Rockefeller Center building on the roof assembly made a 365 solar panel matrix. This is the largest private solar panel roof in Manhattan. Really powerful!

So now we should all go out and buy these high-tech decorations to decorate our holiday decorations, such as to make its own contribution, right?

Wrong. You might as well look at gizmodo.com's discussion of the benefits of using LED and then make a decision. It has been pointed out that "these socket type LED lamps mistakenly twisted the copper wire and the aluminum wire pulled out from the LED lamp. They rust from inside to outside, and stop working. These can be seen very clearly. Only after one season the problem will come out. Then the non socket type LED lamp? When the LED lamp burns out, you can't change it. The longer you use, the darker the LED will become. The white LED lamps are the worst, because they are almost like fluorescent lamps. In fact, they are ultraviolet LED light, the surface is covered with a layer of phosphorescent paint. "

Look at this is to say: "they will all rust from the inside to the outside. I have some pictures here. It's easy to see from the outside, you don't even have to open the slot. What do you suppose to do? The results will surprise you, because these LED lights are not guaranteed. If they are damaged halfway through the holiday season, you have to do it yourself. These so-called 'long life LED lights' risk is entirely up to you to bear. The manufacturer will not accept any complaints and provide any warranty. "

Another blog is commented on his experiences from the trial but later returned to the LED lamp incandescent lamp: "last year I used LED light, but it makes me very unhappy. Although I don't want to waste electricity, but this year I think I will still use the old incandescent lamp. "

And one said: "I and my lover in the first Christmas holiday in 1972 after marriage bought five bunches of small incandescent bulbs, now have two strings can be used. At that time the price of each string of less than $2. When does the LED lamp have such durability? "

To January next year, when a large spruce is removed, it will be cut into the wood for habitat for humanity in the construction of the house. I know these wood will have a good use, but I do not know if these LED lights can be used next year.

Source: Electronic Engineering album