Halogen floodlight to LED?

[JohnW2]

Ones like this claim to have a 360 'beam angle', and I therefore presume that they have rows of LED elements 'all around' - which seems fine, and hence similar to the halogens they would be replacing ...

However, with ones like this it looks as if they may just have a single row of LED elements pointing in just one direction. Is that the case and, if so, which way around would one put it into a 'floodlight' fitting - pointing towards the outside world or backwards towards the reflector? ... and how 'well' would one expect either if those approaches to work?

 

[AndyPRK]

I’ve got the first one. Yes they have LEDs all around. (Well maybe a smallish gap at the back). Sometimes I have had to remove the reflector screw as it clashes. But the reflector isn’t going anywhere.

Regarding the second one, LEDs pointing out. Probably the only way it fits.
Therefore the reflector doesn’t do a lot.
But I’m very pleased with my £21 version. It has 6 rows

 

[SUNRAY]

Ones like this claim to have a 360 'beam angle', and I therefore presume that they have rows of LED elements 'all around' - which seems fine, and hence similar to the halogens they would be replacing ...
View attachment 379747

However, with ones like this it looks as if they may just have a single row of LED elements pointing in just one direction. Is that the case and, if so, which way around would one put it into a 'floodlight' fitting - pointing towards the outside world or backwards towards the reflector? ... and how 'well' would one expect either if those approaches to work?

View attachment 379748

I use them facing out

EDIT: I've never thought to try them facing back but it strikes me they will be very close to the reflector and create a huge shadow if they actually fit that way, especially after Andy's comment.

 

[JohnW2]

I use them facing out

Thanks. If my assumption that there are no LED elements 'on the back' is correct, that presumably means that the reflector of the fitting does nothing? Do they produce a reasonable beam of light when used like that?

 

[EFLImpudence]

9R7SLED - ETERNA LIGHTING

OBSOLETED PRODUCT 6W | 3000K | 550 lm | 20,000 hrs | A+ Rated | R7s

www.eterna-lighting.co.uk

 

[JohnW2]

9R7SLED - ETERNA LIGHTING

OBSOLETED PRODUCT 6W | 3000K | 550 lm | 20,000 hrs | A+ Rated | R7s

www.eterna-lighting.co.uk

Yep, that's like the (second) one I illustrated in post #16.

 

[EFLImpudence]

Yep, that's like the (second) one I illustrated in post #16.

Yes, I know. That's where I got the picture showing it pointing out.

 

[SUNRAY]

Thanks. If my assumption that there are no LED elements 'on the back' is correct, that presumably means that the reflector of the fitting does nothing? Do they produce a reasonable beam of light when used like that?

The reflector does still do something as the 'beam' is wide enough to reach and an amount is reflected back off the glass too (Only have to open the cover to see the change). removing the the reflector also makes a difference to light level.

Be aware; that style is limited to about 20W and in no way competes with a 300W halogen.

EDIT:I see the extra post since I started this. I haven't tried the 6W Eterna but did the Philips CorePro 14W which is rated at something like 2000lm for a WW, the smallest halogen I use are 300W and the pencil test (placing 2 lights side by side to see what shadows are cast by an object - usually a hand simultaneously) gave almost no shadow from the LED.

 

[JohnW2]

Yes, I know. That's where I got the picture showing it pointing out.

Oh, I see - with the absence of any words/comment, I didn't realise that was the point you were trying to make!

I must say that I would find it difficult to be certain from that photo 'which way around' it is. However, the consensus certainly seems to be that it should point outwards.

 

[JohnW2]

EDIT: I've never thought to try them facing back but it strikes me they will be very close to the reflector and create a huge shadow if they actually fit that way ...

If one of those would be uncomfortably (maybe even impossibly) close to the reflector, does that mean that one of the (round cross-section) "360 degree" ones (as in my first image in post #16) wouldn't stand a chance of fitting ??

 

[JohnW2]

The reflector does still do something as the 'beam' is wide enough to reach and an amount is reflected back off the glass too (Only have to open the cover to see the change). removing the the reflector also makes a difference to light level.
Be aware; that style is limited to about 20W and in no way competes with a 300W halogen.

Thanks. I imagine that I will eventually find uses for the fittings that do not require vast amounts of light. Indeed, at least some of the ones I have found were intended for 120 W - 140 W halogens (or smaller).

 

[SUNRAY]

If one of those would be uncomfortably (maybe even impossibly) close to the reflector, does that mean that one of the (round cross-section) "360 degree" ones (as in my first image in post #16) wouldn't stand a chance of fitting ??

The 360º style are offset.

 

[AndyPRK]

Regarding Your first picture. The terminal pins aren’t in the Center, so more of it sticks outwards. And you couldn’t fit that one facing the other way, even if you wanted to.

I started off with some osram 75W eqv. Thinking it was a good brand name
A very yellow and dim light output.

I then got some Diall 11.5w ones. Very impressed. Bright and white light.

I then discovered the rest of the Diall led range. Impressed with the GLS ones with 330 deg light output. In a Center light they light both upwards and downwards like an incandescent. They mostly seam to do 60w eqv. But they only consume around 5W! Ok for smaller rooms.

 

[AndyPRK]

Diall R7s Warm White Tube LED Energy Saving Light Bulbs Choose Watt Output | eBay

Diall R7s Warm White Tube LED Energy Saving Light Bulbs. Cap fitting is R7s. Provides bright light and high quality, use for Small Aperture Down Lighting / Task Lighting. The neutral colour is perfect for relaxing, working or socialising.

www.ebay.co.uk

See pics

 

[SUNRAY]