I picked up an unusual light that contains a total of 112 of these little beauties. Can you guess the make and model of the light they came from? Ive already tipped my hat a few times to some people, so please let others guess if you already know. 
Now all I need is a huge flashlight host and 112 reflectors to stuff all these into!
Well, you got me, could possibly be a replacement for a round flourescent. I have no experience with Nichia but 112 of them could be a good place to jump in.
Ok - when, where, how much?? :bigsmile:
We have round ceiling lights in Japan, which look a lot like that..
Too many brands that have them ;)
edit: this is what I am talking about:
and with cover:
I was thinking road lighting...maybe from Eiko???
Nobody would know what bin/type it is, unless it's written somewhere.
There are a lot of different nichia 219b...
Review: 150 Million Candlepower Militay Xenon Arc Battlefield Illuminator (AN/VSS-3A)
Is it on a tank ?
112 X 300 Lumens ?
35,000 lumen nightlight ?
Torch in the statue of liberty ?
The Great Lighthouse at Alexandria ?
and a source of liquid nitrogen to cool it.
The die size of a Nichia 219 is 3.5mm. If all 112 emitters are in one continuous arc then this light is round and at least 12” in diameter. I can infer from the picture that at least the first 12 emitters are connected in series. The relatively high cost of this configuration leads me to believe that it must be special lighting for the medical field, possibly a movable light fixture in an operating room?
Or some sort of photographic light.
seems besides 5000k they like 3200k too.
These are a warmer color temp in my experience looking at the color of the phosphor.
or maybe a highbay retrofit?
112 emitters ain’t no household unit!
Are they indeed 219b or perhaps 119b (in fixtures I see the 119 used sometimes) ? And what would the colour temp and CRI be ?
Look at post #3 and count those leds... ;)
Yes I see those.
But that’s a CHEAP consumer fixture based on a bunch of low power leds like a cheap” sprinklerhead” flashlight.
look up the nichia 119-219 and do your calculations.
possibly a round fluorescent ceiling fixture replacement module ? (judging by the numbers and arc angle) also are they 219’s or 119’s ? that would be an expensive fixture to have 112 - 219s in it as 119’s are much cheaper.
Dont know of any fluorescent in that form that justifies the use of 112 power leds to replace.
Wow, that actually looks pretty awesome. Seems like it is a mixtures of cool white and warm white LEDs so you get a nice neutral light.
That inspection light I referred to cost $892.
That’s probably not it but what ever those LEDs are in is expensive.
Anyone see any signs of thermal pads under those emitters? They appear to be 119's.
They look to be 119 not 219 and they are probably cool white, not 4500k. The color looks to be cool white. Any photos of it turned on?
There are thermal pads. Look at the thin raised track running straight through the centers of the emitters. That looks to be the thermal trace. If you look closely, it appears that the LED’s are trace wired in 4S groups. For 112 emitters, that would be 28 groups.
Edit: Look between LED 6-7 and between 7-8, and you can see two valleys separating the three traces. Look at the space between LED’s 8-9 and you see a cross shape, where the traces end.
Edit again: Looking now on my home computer, the cross shape looks raised, rather than depressed, suggesting maybe I mis-interpreted what it might be. Maybe that is a hot trace, and the LED’s are connected in series after all? I dunno. I am still a noobie after all. :bigsmile: