LED Lighting

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joewatts

  • #43
    Highland Park said:
    60 Leds = 3 Watts = 45 Watts 160-310 Lumens.
    80 Leds = 3 Watts = 50 Watts 180-390 Lumens

    I use these fantastic bulbs from a very reliable eBay seller (led-lamps)

    I am not led-lamps - I have nothing to gain except a better future for our planet
    Click to expand...

    I have also see some high powered LED's which are the equivalent to 3 LED's in one. They are amazingly bright.
     
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    partsbypost

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    Jan 28, 2011
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  • #45
    Sharpydufc said:
    you have to be very careful, there is a LOT of rubbish out there, especially from the east. best not to get sucked in to buying something that seems like a perfect deal. The technology just isnt there yet.
    Click to expand...
    I can verify this first hand, I had some cluster looking ones from eBay, Cheap Chinese crap, lasted about a month before they all blew ! :rolleyes: and was kinda dangerous too, When I removed them they had heat scorching around the base of the bulb ! SHOCKING - LITERALLY :eek:
     
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    RBS

    RBS

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    Jul 13, 2009
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  • #48
    partsbypost said:
    I've been looking around for the GU10, 240 volt versions for some time, Finally think I've decided on some today, from this company www.finbright.com, 3 year warranty, low wattage and its free delivery,
    Whether they are any good or not is hard to tell, What do you guys think ?
    Click to expand...


    Looking great, but only 250 lumen while normal bulb is around 900. You will need few of these, but still 3 x 3.5w is just 10.5w
     
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    partsbypost

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    Jan 28, 2011
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  • #49
    RobCCTV said:
    Looking great, but only 250 lumen while normal bulb is around 900. You will need few of these, but still 3 x 3.5w is just 10.5w
    Click to expand...
    Yea True, I thought that also, But I have got a few of them all installed in the same room together, I might see If I can just try a couple, to sorta test them first, before replacing the lot. I'll phone them after the holiday and let you know how I get on.
     
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    Rhyl Lightworks

  • #50
    I thought it was time to re-visit this post after about 2 years, as LED lamps are really coming into their own now, having come down in price and gone up in brightness. They will soon make compact fluorescent low energy lamps obsolete, as well as the old incandescent lamps (and how anyone can claim halogens are energy saving, as some manufacturers do, is beyond me). The links to the 3W floodlights are:
    http://www.thelightworks.net/index.php?main_page=product_info&cPath=29_74&products_id=1231] for the non PIR version or: http://www.thelightworks.net/index.php?main_page=product_info&cPath=66_28&products_id=1232 for the PIR version.
    LED torches and battery lamps are the only type I would consider now and have been for a year or more - people who consider old incandescent lamps in torches must be mad.

    However, the really exciting thing is the emergence of affordable mains light bulbs, which are LED based. For example this one gives about 20 years of life with average use, a whiter (and better) light than the old incandescent, comes on straight away, gives the equivalent of about an old 90W incandescent lamp but only uses 5.5W of electricity and has other advantages too: http://www.thelightworks.net/index.php?main_page=product_info&cPath=37_101&products_id=1709

    Barrie
     
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    Rhyl Lightworks

  • #52
    RobCCTV said:
    http://www.thelightworks.net/index.php?main_page=product_info&cPath=37_101&products_id=1709

    Not mentioned how many Lm?
    Click to expand...

    This is because most of the great British public, who we mainly direct our sales to, do not understand lumens. They want to know what is the equivalent in old fashioned watts of incandescent bulbs, which they have grown up with over many years and do understand. I know that such comparisons with LED lamps are not really valid, because the type of light is different, but it is the nearest thing we have to make LED comparisons understandable. For the record, these bulbs are 290 lumens.

    Barrie
     
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    Rhyl Lightworks

  • #54
    Because colour temperarure (to the layman quality of light) comes into this as well, and I think is as important (if not more so) than actual light output. The colour temp. of an incandescent bulb is 2700K and of these LEDs is 4000K, and so gives a whiter light. Everyone (without exception) who has replaced a 60W bulb with these prefer them and say they give out more light (although we know they don't). 100W bulbs are undoubtedly brighter, but also the LED bulb is an acceptable (in in most cases preferred) alternative.

    Barrie
     
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    RBS

    RBS

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  • #57
    Scott-CopyandDesign said:
    The colour temperature would put me off a bit. I'm already not a fan of the 'cold' light which comes from a lot of fluorescent tubes. I much prefer something warmer.

    Mind you, I do have LED floorlights. They do the trick quite nicely.
    Click to expand...

    4000K LEDs are great for shops like jewellers, under cabinet in kitchen, in wardrobe or garden or swimming pool. No way as living light source. Feels sooo uncomfortable.
     
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    Rhyl Lightworks

  • #58
    Colour temperature is a matter of personal preference. Persoally I think the warm white (2700K) of incandescents (and fluorescents and nowdays some LEDs are available in this too) is not very nice - the light has a yellowish tinge. 4000K or cool white is a good compromise. Natural sunlight has a higher colour temp. it can be as high as 10000K on a very sunny day in some parts of the world. Higher colour temps. are recommended for people with impaired vision or those doing intricate craft work, etc. They are also said to mitigate the effects of SAD. The old incandescent craftlight bulbs have a colour temp. of about 6000K and we stock compact fluorescents with an even higher colour temp.
    I suppose you pays your money and takes your choice, although I am of the opinion that it is what we have become used to. I think if the positons were reversed and incandescent bulbs were the new thing, many people would complain about those.

    Barrie
     
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    leemason

  • #60
    We've replaced many of the bulbs in our Motorhome with LED's and they work very well. We have the softer ones in the living area and the brighter (whiter) ones in the kitchen. They really are great and much less of a drain on the batteries (when we are not hooked up that is).
     
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    lightfootled

  • #61
    Light Foot LED specialise in LED equivalents (i.e. replacement bulbs/tubes/floodlights etc) helping companies save huge amounts on their ever increasing energy bills. Our LED lights have considerably lower yearly running costs compared to conventional lights, and the power consumption (wattage) is much lower. Furthermore our LED lights also have a much longer life (50,000 hours on average, or 14 years on average at a use of 70 hours/pw) which means less expense on both the unit cost of replacement and any maintenance costs.


    Why Choose LED Lighting?

    Energy Saving – LED light could save up to 70% energy than normal lighting
    Low Heat
    Low Power Consumption
    Green – all our products are made from recyclable materials
    Long Life – 50,000 hours
    Less Maintenance
    Easy Installation
    CE/ROHS/FCC/UL approved and certified
     
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    Rhyl Lightworks

  • #64
    James Greg said:
    After reading all the reviews here I'm seriously thinking of applying LEDs to my home as well but I have one question would it require all new installations? I mean I have energy saver bulbs in my home right now would I have to replace all the bulb holders because of these LEDs?
    Click to expand...

    The present state of led bulbs is as follows:

    They can be fitted to normal bulb holders (i.e. retrofitted) as has been said, so you would not have to replace the fittings.
    They have considerable advantages over both old incandescents and halogens, and compact fluorescent low energy bulbs.
    At present they tend to be less bright than the above unless you want to pay a lot for them, say £20+, but they last about 20 years with average use and their running costs are very low. They will however pay for themselves over the lifetime of the bulb.
    Because of their low power consumption, torches, etc have much longer battery life and the bulbs (in theory) never need replacing and anyone who buys a torch that is not LED is mad.

    Barrie
     
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    sharylchella

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    Sep 2, 2011
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  • #65
    [FONT=arial,helvetica,clean,sans-serif]I am interested in looking at the potential for use of led lighting as part of lighting improvements to an interior space. In addition to led lighting manufacturers on the internet, what are the best sources for technical information?[/FONT]
     
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    Leadstoyouexeter

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    Oct 29, 2011
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    Cornwall
  • #70
    Kernelpower_Ltd said:
    i am in the process of growing all different kind of veg and once the seeds have germinated i am transferring the small stuff into racks with the lights on 12 hours a day , then after a month you can jack it up to 18hrs a day and hey presto . these lights arent any good for growing weed b.t.w , you really need hid lighting for that , but you could use the led lights in the early growth phase and then switch to HID ( mod please delete thread if unsavoury / against the rules )
    Click to expand...

    You can now use them for growing the old weed, they have come on leaps and bounds.

    Weed has so many wonderful uses its reallly barbaric that its illegal but hey ho it would put the Pharmas out of business and they are not going to let that happen, Its cured so many people of devasting illnesses and its a major threat to them....
     
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    paulears

    paulears

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    Jan 7, 2015
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  • #71
    LEDs are now becoming contenders to tungsten - well at least in professional fixtures anyway - at a cost. At least 5 time the price. I've given up using the commonly available GU50 types - a horrible white, and dim! I can buy tungsten for quite low prices, but LEDs cost too much, act like glow worms and produce very odd colours on fabics due to the non-continuous spectrum. CFLs take too long to warm up, and are dim too, and very few of these energy saving lamps can be dimmed!
     
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    H

    HerbertTurner

  • #76
    Rhyl Lightworks said:
    Many people have heard of LED lighting and want bright light at a minute running cost, at a price comparable to other forms of lighting. This is just not available. However things are improving, and now an outside LED floodlight is available (in both a PIR and non-PIR version) which uses only 3W but gives a quite respectable amount of light. It is reasonably priced, and has a 5 year guarantee.

    Barrie
    Click to expand...

    These lights are best in terms of lighting and less energy consumption.. I have just replaced all my home lights with new leds.. I feel proud after making right decision
     
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    paulears

    paulears

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  • #77
    That is complete nonsense!
    These lights are best in terms of lighting and less energy consumption
    Click to expand...
    Best? Energy consumption is certain very good, but on the LED units that come close to the light output, the consumption goes up to close to the tungsten you have replaced. The cost of course is many times higher for LED fixtures. The damn things are, as I explained, quite unreliable, and dimmer capability excludes using cheaper ones which can explode rather noisily if you accidentally swap a dimmer one for a non-dim one - which my wife can attest to after swapping one. There is NO standard for quality of light. Both colour rendition and beam angle are quite different to tungsten. If you have photographs or paintings, illuminating them with LED is horrible!

    Lifespan, as mentioned by others doesn't remotely hit the stupid life predictions (which are produced with maths, not reality).

    I actually like the colour ones, but NOT colour changers that have in-built electronics, because the proof of ageing is evident after just a few months of use - when new, they change at the same time, but a year later, will be a mess! You cannot replace LEDs with identical ones just a few months apart. Ceiling downlighters are the main culprit. Swap one that fails in 6 months and it stands out a mile. A different white and probably brighter - meaning that you have to replace ALL of them if you wish to remain even.

    They are great products - I do actually like them for certain things, but the technology is developing so rapidly, a product shelf life is often 1 month. By then, the factory is using a different batch of LEDs. A 40W old fashioned light bulb could be replaced with no thought as to if the new one would match, and an 40W replacement looked the same 10 years later! You just cannot do this with LED. The 20 ceiling downlighters in my lounge now cost me just 50p if they fail, and I think I'd estimate I've replaced maybe 6 in the last year. They cost me 5p an hour to run. The nearest brightness LEDs that are a direct (ha ha) replacement are currently just over £9 each - so a swapout cost of £180, and running costs about 1p an hour. That's an awful lot of hours to recover the swap cost, and long enough to mean replacements will be problematic.

    To be green means having deep pockets for an inferior product.
     
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    senruite818

  • #78
    Dear Sir or Madam:

    Our company are doing promotion for 70W Corn LED light

    This product was design by our facoty and get patent for this products,

    The advantage for this products as following

    1: its for our patent products
    2: it can be detachable, that means u can take off the head of the led light, in order to deduct the tariff in european country,
    we will take off the power , then we can write down led light accessories to waybil and write with small value for the goods
    to avoid high tariff, when our client received it , they just need put the screw tightly.
    3: for led lights, its for 120 degree. but for corn led lights, its for 360 degree.
    4: this 70 W LED Light is so bright, it can be put in gym, all of place can be very light,
    5: all of our products have passed CR ROHS
    6: For our products, it was designed by 3D Software --PROE 5.0



    So
    If u need any enquiry

    Please feel free to contact us soon

    Your any enquiry are welcome at any time

    Best wishes

    Margaret


    Company name: Shenzhen Senruite Technology co., Ltd

    Address : No.4 Building.Huasheng industrial area. dalang Longhua Town,
    Shenzhen China,
    Zipcode: 518000
     
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    senruite818

  • #79
    Dear Sir or Madam :


    Shenzhen senruite technology co., ltd are led manufacturer from Shenzhen to produce LED lights with so many different model

    U can go to check with our company with google


    If u have any more enquiry for our products
    Please feel free to contact us soon

    Your any enquiry are welcome at any time

    Best wishes

    Margaret
    Company name: Shenzhen Senruite Technology co., Ltd
     
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    senruite818

  • #80
    Shenzhen Senruite technology co., ltd to produce different LED lights like led street light, led garden light, led ceiling light,
    led lawn light, led flood lights, led strip and so on

    If u wanted to know more detailed information

    Please feel free to contact with margaret wang or wang ying

    Best wishes

    Margaret
     
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