Daylight full spectrum lightbulbs.

Bronnie

Could you help , please?

I dislike the gloomy light cast by the energy saving bulbs I have at the moment. I would also be interested in trying the full spectrum daylight type bulb, suggested for SAD. I want a bright bulb for the central standard pendant lights in my hall, lounge and bedroom.

1.) Could you please advise if this would be suitable and if it seems a reasonable price. I can't seem to find many other 30w energy saving ones

http://www.lightbulbs-direct.com/product/2205/helix-daylight-energy-saver-30w-bc-b22d/

2.) Does this look like a standard size bayonet fitting (is there a code for the different sizes of bayonet fitting that I should know about please?)

3.) It's 30w but equivalent to 150W. Which wattage do I go by when using it with a lamp-shade that has a max wattage stated?

Any advice much appreciated.

alanobrien

Price is reasonable for a 6400K bulb but you can get lower. I buy mine from ebay here's an example.

http://cgi.ebay.co.uk/DAYLIGHT-6400K-LOWENERGY-LIGHTBULB-BC-SPIRAL-30W-175w-/230531879842?pt=UK_Light_Bulbs&hash=item35acc553a2

That one is a BC fitting bayonet Cap, see the different types here
http://www.lightbulbs-direct.com/article/fittings-caps-and-bases/

When fitting a bulb to match the max lampshade wattage always use the actual bulb wattage whether its a standard incandescent or power saving bulb.

For example a 60 watt energy saving bulb is still a 60 watt light bulb. Power is measured in watts, light output is measured in lux / foot candles.

ormus

The most common sizes of bayonet cap fittings are BC (or B22d, where 22 refers to the diameter in mm of the lamp base)
and small bayonet cap - SBC (or B15d).
For insulation and safety purposes such fitting typically feature a plastic or metal skirt.

for lamp shade wattage, use that wattage or lower. never use higher.

Yorkie1

ormus wrote: »

for lamp shade wattage, use that wattage or lower. never use higher.

Just so I've got it clear in my own mind, if a lampshade says max 60W, what's the maximum wattage low-energy bulb I can put in there?

Is it the equivalent to a traditional 60W bulb (i.e. 11W or whatever it is), or actually a 60W low-energy bulb (which would be equivalent to ever such a lot of watts in a traditional bulb)?

Bronnie

Thanks you for your helpful responses.

Yorkie1 wrote: »

Just so I've got it clear in my own mind, if a lampshade says max 60W, what's the maximum wattage low-energy bulb I can put in there?

Is it the equivalent to a traditional 60W bulb (i.e. 11W or whatever it is), or actually a 60W low-energy bulb (which would be equivalent to ever such a lot of watts in a traditional bulb)?

Was just getting my head round this one too. I'm reading this as if I have a lampshade that says 60w max, I'm OK to use the 30w energy saving bulb I linked to. However in the past I've had lampshades that have scorched when I've used too high a wattage traditional bulb and assumed it was the heat from the light that caused this. Does the bulb linked above not produce the equivalent heat to a traditional 150w bulb then, and will this be ok?

Sorry to sound so horribly confused!

Thanks

patriick

It's the actual wattage of the bulb that determines how much heat it puts out. So an 11W low energy bulb puts out 11W of heat. The equivalent ratings just say what the light output is in terms of normal bulbs which are very inefficient and hence generate much more heat for the same light. You can ignore this for determining whether they can go in your lampshade.

I'm not sure if there is a 60W low energy bulb but if there was one then your lampshade would be ok but you would probably need sunglasses :cool:

So to answer your original question a 30W low energy bulb will be perfectly safe!

Pat

Bronnie

Cheers! Thanks.

travis-powers

Can I ask If these daylight bulbs work? I suffer terribly during the winter months

alanobrien

travis-powers wrote: »

Can I ask If these daylight bulbs work? I suffer terribly during the winter months

6400k (full spectrum) bulbs are very bright and emit much more white light than the old power saving bulbs which emit light which is very yellow.

I use the 6400K lights with plants but they offer the same light spectrum used in SAD lamps which are known to work well for some sufferers.

travis-powers

Thanks Alan I will give them a try

Errata

HELP

Will these http://www.lightbulbs-direct.com/product/2866/helix-daylight-energy-saver-15w-ese27/ be what I need to replace the 2 x 18w Warm White energy saving screw in bulbs in bathroom ceiling fitting ?
I don't think I can cope with another winter feeling depressed every time I switch the light on :mad:

Never thought the day would come when I was flummoxed over which bloomin' light bulb to buy

Ormusssssssssssss (shouts as loud as she can )