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Who would have thought that we’d be holding a 20W LED replacement bulb in our hands in 2012? Well we are, and thanks to LED light manufacturer TESS, we have the first 2000 lumen output bulb that easily matches a 125 watt incandescent bulb. Similar in size to a normal incandescent bulb, the secret of this bulb is a 100 lumen per watt LED luminous output system and an advanced thermal dissipation technology that includes vents and a small internal fan that shunts hot air out of the casing. Pretty neat!

Longevity? Well lumen decay is good, and 70% of the original lumen output is maintained at 40000 hours. Our only concern here is the longevity of the electronics in a bulb putting out serious light. That said, the colour rendering index is as expected – around 70, and with CE, UL and FCC certifications, you are fairly certain of a well designed product.

No one is talking about cost and while that may be the least pretty part of the equation, the product is likely to gain ground quickly. Everite are expecting a 60W replacement to dip below US$10 in latter 2012, so who knows what this bulb will cost. Our guess, US$19-24.

All in, impressive and the sign of things to come in 2012

TESS 20W led light wil change lighting

TESS 20W LED Light

 

 

 

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One more time – buying an LED light based ONLY on the number of watts (W) is a BIG mistake. Why?

Well incandescent lights, like a 60 watt bulb, put out a fairly constant amount of lumens per watt of electricity used – no matter what the brand. Simply stated, look at lumens as being the measure of light output of a light source. The more lumens, the brighter the light. So buying a 60 watt bulb from brand X or Y or Z will not result in a dramatically different lumen output and you can have a high degree of confidence buying by the number of watts.

Not so for LED lighting. Different manufacturers (and there are hundreds) produce lights that have very different “lumen per watt” outputs. Using older technology, the LEDs may only reach outputs of 50 lumens per watt. So buying a 3W LED light will give you about 150 lumens of light.

More recent technology offers over 100 lumens per watt and so a good 3W light can offer 300 lumens of light output.

That is the difference between a light level that allows reading and one that will cause eye strain.

So do not buy a light that does not have the “lumenous flux” rating clearly stated. If you don’t, you’ll be playing Russian roulette when you turn it on – not knowing what you are going to get!

What you will need to know is the lumen output of each of your current lights. For example, a 60 W incandescent bulb puts out around 650-750 lumens. So you need an LED bulb that can match this.

Look for the lumen output, not the wattage!

LED light bulb

LED light bulb that replaces incandescent light bulb

 

 

 

 

 

 

 

 

 

Article by Steve Giddings

 

 

 

 

 

 

 

 

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By 2020, 8 out of 10 lights you see will be LED lights. The lighting revolution is no different to the communication and information technology revolutions that have driven our development.

So what are the 10 great reasons to make the change?

1. Low efficiency

Do you really switch on your lights to heat up the room? No! But 85% of the electricity going into your incandescent lightbulb is emitted as… heat! 60 Watts of energy ends up heating up your room… not great!

2. Longer life

Incandescent lights last for 1000 hours… LED lights last for 30000-50000 hours. A big difference…

3. No UV radiation

Yes, UV radiation is emitted by our current lighting. You are not about to get a beach tan from your lighting, but UV light is an issue, and it will impact fabrics and paintings. LED lights have no UV emissions.

4. Mercury..

Fluorescent lights contain mercury! LED lights contain none. Your choice!

5. No glass

LED lights are made of plastic and aluminum…no glass. So there is no safety issue and no glass that can shatter and cut.

6. Color rendering index

How “real” are the colors under different light sources? Is pink really pink? Under fluorescent light, you may see about 65% of the “real” color. Incandescent lights are better at around 90%, but LEDs come in across the board at around 80-90%. So similar for LED replacements of incandescent lights but if you replace fluorescent lights, you’ll have a great reason to change your lights.

7. Power efficiency

We’ve talked about lumen efficiency per watt of electricity. But what about power efficiency. LED lights use from 2-10 times less power for the same light output. Incandescents  put out less than 15 lumens per watt (consider lumens as a measure of light output). Enter the LED light – 7 Watts at 100 lumens per watt. 7 Watts of electricity will cost you a lot less than 60 Watts! That’s a great reason to replace your lights with LED lights!

8. Directional light

LED lights emit light where you point them…not behind them like an incandescent light. Direct the light where you need it…who needs the ceiling lit when you are more interested in the light on your dining table?

9. Color

You can literally make your LED lights in any color – some even change color with a remote control. So mood lighting is possible and not only can you dim them, but change color as you need to.

10. Finally, safety.

LED lights run on 12 to 24 volts. So a broken bulb will not kill you! A pretty good reason to change your lights to LED lights!

So there are 10 reasons… why not contact LED Lighting Solutions to advise on your LED light replacements.

 

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Y.F. Yeh, Everlight ‘s Chairman, has stated that led light bulbs will drop to less than US$10 in the second half of 2012.

This will come on the back of a soft first half of 2012 and will be driven by stronger demand after June 2012.

LED lights are gaining popularity as consumers begin to understand the energy saving potential and manufacturers hit higher lumen/watt figures and quality improves. Quality improvements are the key to increasing confidence in the industry, where over promising and under delivery are common. Hopefully, softer demand in H1 2012 will drive fly by night companies out of business and will leave more genuine suppliers like LED Lighting Solutions in a better position to advise customers and provide high quality lighting.

All in, this bodes well for the LED lighting industry and more importantly, for the consumer.

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led lights

LED lighting facilitates education in Africa

 

It has only been 20 years since Africa was introduced to the cellphone. In that time, millions of people have gained access to a communication tool that has changed lives and kept friends and families in touch in places that would never have been reached by land lines.

A similar kind of revolution is taking place in Africa – lighting. Light is key to the social fabric of most societies – allowing people to meet, socialise and work after dark. In so many villages across the continent, light is either provided by fires, paraffin lamps or candles. Electricity is a luxury for many – either not available or too expensive to connect and use.

If you’ve ever tried to read a book by candlelight or the flicker of a paraffin lamp, you’ll know that after a while, the low light level and the flicker will tire out your eyes. Yet millions of students study by candle light or paraffin lamps every day. Until now there just hasn’t been an alternative.

Enter a low energy consumption light source (LED lights), a mechanism to create power (solar cells) and a cheap way to store energy (rechargeable batteries).  While solar and battery technology has been around for some time, led lighting has only recently become viable with higher lumen outputs that make their performance acceptable. But that is not the only reason that change is about to accelerate. What will drive the change is the cost reductions in all three technologies.

In fact, with ever increasing oil prices trading off against technological breakthroughs and scale advantages of these new technologies, pricing is coming within range of “affordable”. A 2 watt solar cell with a battery and a series of small LED lights can light up a small house and now with improvements in quality and longevity, the upfront cost of purchase can be recovered very quickly. Thereafter, the lighting is effectively free and plentiful. All this thanks to the amazing low power consumption of led lights. With over 100 lumens per watt now becoming the standard, just 3 watts can light up a desk or a kitchen area with enough light to see and work by.

Besides the cost recovery angle, the quality of the led lights is far superior to the alternatives anyway, and so students can study with cool white light that does not stress the eyes.

As we move through 2012, and the cost of led lighting declines, and new technologies impact the solar cell and battery components, expect to see led lighting move through Africa at a rapid pace. Perhaps not as fast as the cellphone, but like the cellphone, it will bring welcome changes to the social and educational environment in Africa.

An article by LED Lighting Solutions

 

 

 

 

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I took a walk through Builders Warehouse today and was very surprised to see the large number of CFL lighting products on the shelves. Then to my utter amazement…some LED bulbs! Not a great range, but some replacements for 35W incandescents and some GU and MR16 bulbs. The cost? A cool R126 for the 5W LED and R99 for the MR16 bulb…ouch! Compare that to R10 for a 60W incandescent and much the same for the little 3W MR16.

Rushed home to try them out. The family couldn’t see any difference with the MR16 in the ceiling but the 5W LED fell short of the 60W bulb it replaced. To be fair, it was stated as a replacement for a 35W bulb but then there wasn’t a 9W LED on the shelf.

Well we are definitely getting closer to “green” with at least some LED bulbs on the shelves. A bit too pricey and not great quality…yet. But prices internationally are coming down as volume picks up and we may yet see the early adopters giving way to the mainstream in the next few years. Companies like Led Lighting Solutions will be poised to assist this transition. Watch this space

By Steve Giddings

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