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| wquiles:
Several years ago I modded this WoodRiver LED Dual Power Shop Light (Item #149727, available from Woodcraft for $33) by using a severely under-driven P7 LED (200mA). But that light has not been "enough", and I knew that with a plastic head I was limited to how much current I could feed the LED. So I decided to make my own metal head for these lamps so that I can get more use of them. I started from a solid piece of Al: I added some cooling grooves: And using the Nichia 219's I made two prototypes: I am using a frosted narrow and a frosted wide 20mm lens - how do they work? With their flexible neck I can get the light where I need it, but this time I get plenty, beautiful, 4500K 92CRI light: Here I am using one of them to cut more of the heads: Since these work so well, I made some more for me, and a few more just in case: I took 4x of them, sand blasted them, and then coated them with Moly Resin semi-gloss back: Drill holes for LED wires: And they are all done, ready for assembly: I have been using these for the last two days, and they are working great. The surface temp (via IR temp measurement) hovers between 100-110F, with an ambient temp of about 80F. So they are definitely warm to the touch, but not hot enough to burn you when re-adjusting their aim. As a point of comparison, my Electrix 50 watt incandescent gets to about 135F with the same ambient temp - you can't keep your hand on that one for long! By the way, although I used the Nichia 219's here, I did build one LED Shop Lamp using the Cree XP-G Warm White (the Cree has a more throwy beam although both have the same narrow frosted optics). The exposure is stepped down (these are fairly bright!). Here you can see them side-by-side: the one that looks "white" is the Nichia: Will |
| Divided he ad:
--- Quote ---So I decided to make my own metal head for these lamps so that I can get more use of them. --- End quote --- Can't help meself. You know what they say, where there's a will.... :D Very nice lamps there Will :thumbup: I always think I should put a bit more effort into learning about these high power LEDs :smart: One of these days :coffee: Still plodding through my Tuit list :dremel: Ralph. |
| wquiles:
Thanks. One thing I neglected to do was to post "before and after" pictures so that folks can see the dramatic improvements. Stock light on the left, upgraded light on the right - stepped down exposure so that you can see the beam, but camera on manual exposure so that you can compare the relative brightness. First the stock lamp - the beam is horrible and uneven: Then the upgraded lamp - much, much better beam profile, plus much brighter as well: Now the lights are aimed at the chuck on my lathe. Again, camera on manual exposure. First the stock lamp: Then the upgraded lamp - again, much better coverage and much brighter: Will |
| Divided he ad:
As you say... Dramatic improvements :thumbup: Always good to know you can out do the erm... "Professionals"!? :nrocks: Ralph. |
| HS93:
thank you for that , great idea and I think a lot will copy , they should be called wquile lights or Wiggilies , two questions first is what do you use for the flexie and how do you wire the leds, do they need drivers etc what voltage are they ?if anything else is needed can you do a sketch please as a lot of the thicker people like me will want to try and build one thanks peter |
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