request for advice about lightboxes

[baratron]

After a couple of months of feeling blah which hasn't improved, I recognise that the dawn simulator alarm clock I have just isn't enough to deal with my SAD this year. Lying in bed with the full light of it streaming into my eyes barely improves my functionality. I feel like I'm living in perpetual twilight, and have very little inclination to do anything.

But I have a problem with buying a lightbox. I'm very environmentally conscious. Every room in this house, bar the kitchen, is lit with low energy fluorescent bulbs because I want to consume as little electricity as possible. I really don't want to use a lightbox that's running at 200 W for an hour a day, because that's like leaving every light in the house on for an hour a day. And I'm having great trouble finding out the energy consumption of different lightboxes from seller's websites. Some of them mention a 55 W fluorescent tube, or 2 x 80 W bulbs, but others simply say things like "LED lights consume only 1/10 the power of conventional incandescent lights, yet are 10 times brighter". Great, wonderful, white LEDs are lower energy than ordinary lightbulbs - but are they lower energy than a fluorescent tube? And more to the point, are they as good for SAD?

So, uh, if anyone knows someone I can talk to about this, or a retailer that details the energy consumption of every lightbox so I can make a fair comparison, that'd be great. (I simply don't have the energy to visit individual manufacturer's websites to try to take in information :/ )

Comments

[barakta]

I was going to say to baratron that it is likely that if the lightbox isn't using much power then it might not be as effective. No matter how clever our chemistry of lightbulbs at the end of the day energy saving stuff tends to have missing frequencies and as I understand it SAD sufferers need something as close to natural daylight as possible which will inevitably use power.

It might be that a more powerful lightbox will only be necessary for /some/ of the winter, while the existing one is fine until November or whatever.

[baratron.livejournal.com]

I agree with you about frequencies (or wavelengths). I'm not sure that I agree that you need high power to achieve the right wavelengths, though. As far as I know even so-called "full-spectrum" conventional lightbulbs are pretty poor at replicating natural sunlight. It may even be that a fluorescent tube or LED lightbox is better than a conventional bulb. There's all sorts of crap inside fluorescent tubes to change the emitted wavelengths (which is why they should always be recycled).

But I'm being blinded with psuedoscience here (pun not intentional)! Every manufacturer has their own marketing speak and the site I'm looking at doesn't seem to have a side-by-side comparison of the different models. I really want a feature grid like the things you get in mobile phone catalogues so I can narrow it down to maybe 3 or 4 models to examine in detail rather than having to plough through all the crap in all of them. Gah!

This LED lightbox (http://www.electronichealing.co.uk/products/sad_golite.htm) features "patent-pending BLUEWAVE™ technology". The marketing blurb claims that "the specific bandwidth of light that is responsible for treating SAD and related circadian rhythm disorders ranges from 446-477 nm" (no citation given - of course, mere consumers don't need to know such things) and apparently even most full-spectrum bulbs don't replicate that. The manufacturer has found some way to tweak an LED to produce a wavelength band that isn't normally possible in artificial light, or something. There's a nice little graph given, which would be very convincing if not for the lack of units.

If I have to spend £200 on a lightbox I have to spend £200 on a lightbox, y'know? But I want to spend the £200 on one that's going to help reliably.