Tuesday, March 02, 2010

LED Deck Lighting

There's a combination deck/steaming light about midway up Scamper's mast. The steaming light is fine but I've never been happy with the deck light. The incandescent bulb draws almost an amp and is really not that bright.

I tried a "high power", single LED bulb from BulbTown.com. It draws very little current but is quite a bit dimmer than the original. In a pinch it is workable but I wanted a little more light so I poked around for parts to build a bulb I couldn't find anywhere else.


The bulb on the left is a "Miniature Reflector Bulb BA9S Base" from BulbTown.com. The middle bulb is from LEDLight.com. The assembly on the right resulted from cutting the reflector from the first bulb and attaching it to the second bulb. The bulb closest to the camera is the original bulb from the fixture.

The 5-LED bulb (middle and right) draws almost no power but in stock form puts most of its light out the side. I found the incandescent reflector bulb (left) via Googling for "ba9s reflector" and bought 5 of them for experimentation. They're cheap but not very bright. Not sure what they would be good for.

I cut the plastic reflector off with a razor saw, held it onto the LED bulb with some handy butyl tape, which also created a dam, and squirted in some epoxy using a West System syringe. I made 3 so I'd have spares.

The new bulb gives a nice glow to the foredeck, somewhat like bright moonlight. You can't quite read with it but you can do most other tasks and it doesn't affect night vision. Since it draws so little power I can leave it on all night in addition to the anchor light adding a bit of visibility.

7 Comments:

Blogger Joey said...

Very creative idea with using the reflector from the other bulbs. There are better designed LED bulbs that will work better in that spot though. I sell a T10 1.5W LED bulb that almost already has that shape and is very bright heres the link 1.5W T10 LED bulb

2:08 PM  
Blogger John Williams said...

That's a great bulb. Thanks for the link. That fixture needs a BA9s base, not a T10. You have something similar with a BA9s base but it's rated at 1 watt so might not be quite as bright as the 1.5 watt with the T10 base?

4:38 PM  
Blogger Joey said...

Oh I didn't even notice it was a BA9S. Yeah all we have in the BA9S that would work are those 1W bulbs. Still very bright though, very comparable to the 1.5W.

4:42 PM  
Blogger Frank Lin said...

Thanks for sharing this led light, it is great,it is great to buy these led light bulbsled bulb

3:11 AM  
Blogger leddoes said...

This comment has been removed by the author.

12:13 AM  
Blogger leddoes said...

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12:16 AM  
Blogger 孙立冬 said...

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12:45 AM  

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