LED replacement for halogen spot - Current best?

[ZDP189]

It's Summer again. Every summer my lift (elevator) gets baking, baking hot because it's not air-conditioned and constantly burns 4 x 20W halogen bulbs. It also costs us more than US$100 to run those bulbs per year and I am told that our lift service people cannot or will not convert them to switch off when nobody's in the lift. The biggest problem is the heat.

I cannot change the lift to run fluorescents because the lighting fixtures and ceiling cannot be changed. I've long been looking for a simple LED based replacement for these lights in a halogen reflector form factor, using a small screw-in 12V fitting.

As recently as last summer, no product existed that could match the output of the original lights. I am sure that the new SSC-P7 and higher lumen output emitters should have made things possible by now and it can't be long before the manufacturers pick up on it.

So what then is the highest light output LED device that fits these sockets and can match the light halogen light output (310-700 lumens)? If they can be brought down to 3,000K, or at least 5,500K all the better.

 

[broadgage]

Are you certain that the existing halogen lamps are a small screw fitting?
Most 12 volt halogen lamps in lifts etc seem to be MR16 lamps, with a small 2 pin base.

If these are 12 volt, 20 watt, MR16 lamps, then a number of suppliers offer LED equivalents.
I could recomend a UK supplier, but I assume that you want a USA source.

LED replacements for halogen lamps vary a lot in output, I would avoid fleabay and purchase from a reputable lighting supplier.

Most 12 volt LEDs will only work from DC or line frequency AC, they wont work reliably on the high frequency AC from an electronic transformer.

 

[LEDninja]

A word of warning regarding heat.
LEDs smoke at 140°C.
Halogens are designed to run above 3000°C
It is usually not possible to run LED lamps (and CFLs) in high heat environments inside enclosed (or in-ceiling) fixtures as the heat can not escape. Ventilated fixtures are needed.
We need more info on the fixture in addition to the bulb.

Hong Kong has some weird socket sizes. I remember bayonet instead of E26 medium screw base for regular light bulbs.
What is available in US (115VAC country) may not work in Hong Kong (200VAC country). UK/European stuff (230VAC) will work but not very well.

I think we need to find out exactly what we are replacing.
1) Voltage 12VDC, 12VAC, 120VAC, 230VAC.
2) Socket MR11/16, GU10 bi-pin; E12, E17, E26/27 screw base.
3) Size PAR11 1.375" wide to PAR38 4.75" wide. There are bulbs also with with R## as well as others.

 

[blasterman]

Halogens are designed to run above 3000°C

?

The filament of a Halogen might burn above 1000 Celsius, but halogens will die quickly if their outside environment stays half that hot for very long.