upside down LED bulb?

r2015

Do upside LED bulbs exist?


I have a standard lamp and I replaced the 60 watt bulb with an LED bulb but because the light from the LED is pointed upwards there is hardly any light coming out of the bottom of the shade to light the chair and surrounding area beneath it.


My wife is complaining that she can't see to do her knitting.


Even a CFL throws more light downwards, though that is the wrong colour for her knitting.

esuhl

LED "bulbs" seem to produce quite a narrow beam of light. The easiest option would be to use a CFL bulb of whatever colour is suitable for knitting.

r2015

LED "bulbs" seem to produce quite a narrow beam of light.

I know that, I was wondering if there were any type of LED bulb that didn't.

Southend1

Try a filament LED. E.g. http://www.ledhut.co.uk/new-products/4-watt-b22-led-golf-ball-bulb.html

poppellerant

When I changed my bulbs from CFL energy savers to LED ones, I did notice that shadows seem sharper - I assume this is because of the narrow 'beam' of light. But I have to admit, I wouldn't go back from LED bulbs - they are brighter and don't take minutes to reach full brightness.

In your situation, I'd get a desk lamp that you can move around.

elstimpo

Southend1 wrote: »

Try a filament LED. E.g. http://www.ledhut.co.uk/new-products/4-watt-b22-led-golf-ball-bulb.html

You'd want to know the specifics about what gas(s) are used inside the product before you go near them. Different companies use different gases, some state 'patented gas', some with helium and others with all sorts of stuff. What happens if you drop one, what gas is released? The other worry would be the LED driver, it's going to be very very small so how does it work?

Lots of questions about filament lamps at the moment.

Nilrem

esuhl wrote: »

LED "bulbs" seem to produce quite a narrow beam of light. The easiest option would be to use a CFL bulb of whatever colour is suitable for knitting.

I suspect it could vary with the make, I've been fitting some OSRAM LED bulbs in the last few weeks (replacing old fittings and CFL's), and I've noticed their round bulbs have a funky bit of glass inside that seems to take the light from the LED's and spread it all over the place (not back up the base of the bulb but a very wide angle all around the front).

bloss0m

Some of the Philips bulbs are like that too but not all

Nilrem wrote: »

I suspect it could vary with the make, I've been fitting some OSRAM LED bulbs in the last few weeks (replacing old fittings and CFL's), and I've noticed their round bulbs have a funky bit of glass inside that seems to take the light from the LED's and spread it all over the place (not back up the base of the bulb but a very wide angle all around the front).

flashg67

A recent B&Q email I got seemed to hint that their LED bulbs were ideal standard replacements - may be rubbish of course, but work checking out?

http://www.diy.com/departments/lighting/DIY779965.cat?mid=wk41-14-Club_Trade-CustCal-LEDbulbs&rid=7564114&ecamp=eml-wk41-14-Trade-CustCal-LEDbulbs

almillar

That filament bulb is 420 lumens - equivalent to roughly a 40W normal bulb. Your wife won't be able to see her knitting depending what's being replaced. LED isn't ready to replace all bulbs in all situations yet, put the CFL back in!

cyclonebri1

If they give out a direct line of light, why does it matter if upside down or not. It won't deviate if on the same axis