led gu10 problems

[ban-all-sheds]

Is there any sensible replacements for Halogen GU10's on the market?

No, because you are starting from a position of utterly non-sensible lights in the first place.

Short of changing the 50W lamps for "energy saving" 35W lamps as and when they blow, is there any other option?

Yes - rid yourself of the ridiculous idea that you can light a room with an array of 2" diameter torches, and install something actually designed to do what you need.

 

[Aragorn84]

Just popped the blown lamp out, as you suggested its got a metal ring to hold it in then a loose lead behind it with the bulb holder.

I'll order up a CFL and see how it goes.

Any particular brands/vendors i should try?

 

[johnnykc]

the CFL GU10 will stick out of your fitting by about 20mm and will take a goood minute to reach a decent brightness.......

this may or may not be acceptable to you..

 

[Steve]

megaman. search ebay. i got 6 from there for about £20 (usually about £6-8 each). im not suggesting you bulk order straight away though - you might not like them!

 

[Steve]

the CFL GU10 will stick out of your fitting by about 20mm

this may or may not be acceptable to you..

no it wont. he's just said he has a fitting with a flying lampholder and retaining ring. if there is clearance behind a standard GU10, a CFL will fit!

 

[Aragorn84]

No, because you are starting from a position of utterly non-sensible lights in the first place.

Yes - rid yourself of the ridiculous idea that you can light a room with an array of 2" diameter torches, and install something actually designed to do what you need.

As i said, its a rented house, so i cant really go hacking the roof around to change the lighting, and to be honest, it lights up the kitchen pretty well as is.

 

[333rocky333]

At a hotel I was at last week, all of the lights were GU10 LED replacements. Light coverage and intensity was very impressive

These are used in a lot of shopping centres.

http://www.exergi.co.uk/

 

[johnnykc]

Sos Steve! I accept that it may fit....but you must agree with the slow start up!

 

[Steve]

Sos Steve! I accept that it may fit....but you must agree with the slow start up!

Yes, though I have noticed a marked improvement with the newer models. Though it could just be because I'm comparing with lamps that are about 3 years old (get sluggish with age)

 

[aptsys]

At a hotel I was at last week, all of the lights were GU10 LED replacements. Light coverage and intensity was very impressive

These are used in a lot of shopping centres.

http://www.exergi.co.uk/[/QUOTE]

They looked almost exactly like those, but had fresnel type lenses rather than frosted.

 

[Steve]

Those exergi bulbs - whats the need for all those ribs and vents on them? If they really do give off virtually no heat, why add cost by over-designing them?

 

[ban-all-sheds]

They don't give off much heat when compared to incandescent lights, but bright LEDs do produce a great deal as a percentage of their overall consumption (85-90%), and there is actually a serious problem with keeping them cool, because they cannot tolerate the amount of heat they produce.

It's a dead-end technology, basically, and will be dropped by the makers as soon as something else (e.g. OLED, ESL) is available.

 

[Steve]

it does seem to me that LED is going to end up no more efficient than CFL. When you consider they claim a 7 watt LED lamp is equivalent to a 40 watt halogen. This isnt much better than halogen, and is probably over-claimed.

People were getting excited by LEDs a few years ago when the first lamps had a cluster of about 21 LEDs for about 2 watts. Oh great. But they were useless. Now we are getting close to CFL / halogen output, they are becoming equivalent to CFLs.

 

[aptsys]

It's a dead-end technology, basically, and will be dropped by the makers as soon as something else (e.g. OLED, ESL) is available.

Semiconductor LEDs most definitely aren't a dead end technology.

 

[gblades]

it does seem to me that LED is going to end up no more efficient than CFL. When you consider they claim a 7 watt LED lamp is equivalent to a 40 watt halogen. This isnt much better than halogen, and is probably over-claimed.

People were getting excited by LEDs a few years ago when the first lamps had a cluster of about 21 LEDs for about 2 watts. Oh great. But they were useless. Now we are getting close to CFL / halogen output, they are becoming equivalent to CFLs.

eh?

Halogen is about 20% more efficient than a normal bulb so basing everything on a equivalent light output of a 60W bulb you get :-

normal bulb - 60W
Halogen - 50W
CFL - 11W
LED - 5W