Commercial COB lamp, Optic - Vero 29

[PSUAGRO.]

The fan spacing is too tight? When I first saw this fixture it seemed like it........opposing fan directions that close would actually be counter productive IMO.......

 

[Mechmike]

I flipped one of the fans and now she is blowing out some heat

At first look I thought it's a great idea but it needs much better thermal management.
That light would benefit with better cooling for sure. 2 more fans blowing directly at the heat sinks and both side fans exhausting might be enough to cool it adequately.

 

[churchhaze]

What does the power connector look like? Are there prongs in the connector on the case, or is the power cable a death cable?

Does the power cable have 2 male ends? (death)

Comes with an 8 foot power cord, 16 gauge. Also came with carabiners for hanging but I used zinc chains. The unit has a connection point on each corner.

Hooked up and warming up. So far power draw has fallen from 127W cold to 120W warm. Light output has fallen from 13030 lux to 10420 (20%). Some of that is due to temp droop, some is due to the driver warming up and some is due to Vf shift. In order to find out just how much of the loss is due to temp droop, I would have to cut the driver wires to bug in. But I can estimate it based on the power draw. It looks like about 5.5% loss from warming up the drivers and the Vf shift so that leaves about 14.5% loss due to temp droop, yikes! Some parts of the outside of the case are 40C, most part 35C. Once the temp stabilizes I will pop it open and check heatsink temps (probably too high for my baby food thermometer)
View attachment 3315578 View attachment 3315579 View attachment 3315580

 

[SupraSPL]

Yep it needs improved airflow and possible slightly larger heatsinks. Even after flipping the fan and stabilizing, it is still way down, 10740 lux from 13030. That is about 12% temp droop (Tc ~90C, Tj 105C!) but I think we could get it down to 3% temp droop with proper cooling.
9% more light means 9% more buds

 

[churchhaze]

Never mind, I got it! Good stuff!

 

[SupraSPL]

The power cable is like a PC power cord cable, nice quality and 16 gauge. The outlet in the unit is a heavy duty female connector. One possible issue, the case is not grounded. That would be a very easy fix though.

 

[PSUAGRO.]

Maybe I should have looked at the pics first
........they changed the cooling fan placement(apache style now)......could have sworn it was two 80mm fans centered on the top of the casing before?

 

[SupraSPL]

You are right, the larger models show a pair of 80s on top.

 

[alesh]

Which lens are used? These?

 

[bicit]

I can only imagine how hot the larger models get. Seems like a very poor case design overall.

 

[SupraSPL]

Yes those lenses look the same, but minus the reflector. Good link thanks amigo!

The case is very convenient and I love how compact, light and easy to open up it is. But the consequence of that small case (40mm fans) is not enough air movement. Easily fixed if you were to modify the case, but hopefully they can make a design change to address it, which would bring the efficiency up to 34% and provide the lamp with VERY reliable service life.

As it stands (with the fan flipped) , the lamp should be about 30% efficient even when running that hot. So it will grow some bud for sure. I believe you can select a 3000K color temp as well although it will run slightly hotter.

 

[DonPetro]

Seems pretty hokey for a commercial light. I picked up a few packs of those hangers the other day. The drivers are available on ebay for under $24 each. I would say one could build that same light for less than half what its retailing for.

 

[SupraSPL]

That is probably true, but despite that I have a suspicion that this is one of the best values to be had for those who cannot or will not DIY.

 

[DonPetro]

I would have to agree with you there.

 

[bicit]

Have you had a chance to test the effects of the lens yet?

 

[PurpleBuz]

The case is very convenient and I love how compact, light and easy to open up it is. But the consequence of that small case (40mm fans) is not enough air movement. Easily fixed if you were to modify the case, but hopefully they can make a design change to address it, which would bring the efficiency up to 34% and provide the lamp with VERY reliable service life.

I'm surprised they ignored the heat management so much. Reminds a lot of early small design PCs that were really hotboxes.

 

[Ace Yonder]

I wonder what the price breakdown is on that..

$5 fan X2
$20 box
$5 optic x2
$40 meanwell x2
$30 Vero 29 x2
$.25c hangers
$10 plugs, wires, ac inlet
$10 heatsink
$2 pico ez mate x2

Something like that...just off the top of mi head. About $200 or so on the high end to do it yourself. Figured something like this would pop up...sure its one of many to come. Think it'll require more thought to stick around...but its a decent early option. Compared to everything else available..

First, nice price list, I always wonder that when I see products like this. However, you priced for Vero 29s, but Supra said

.... First thing is first, yes it has genuine 4000K 80CRi Bridgelux Vero 18s ....

I believe (but could be wrong), that the Vero 18s are substantially cheaper than Vero 29s, I believe on DigiKey they are about ~$13 (Again, I could be reading things wrong).

 

[SupraSPL]

Ya they sent me the smallest lamp which is Vero 18. I am curious what drivers they are using for the Vero 29 lamp because these LPC-60-1750s only go up to 34Vf, not high enough for the Vero 29 (~38Vf)

Have you had a chance to test the effects of the lens yet?

Not yet, I will try to use one to compare against my DIY reflectors and see how it performs

 

[epicfail]

I would drill a bunch of intake holes in the lid above where the heatsinks are (similar to SDS V-Series) and set both fans to blow out. I thought of using those same cases with V29s to make some panels for someone but decided to go a different route.

Small Case Large Case

 

[SupraSPL]

Good idea EF that would probably be the easiest fix.

So I did 2 quick tests with the glass lens on my Vero 29 and it significantly outperformed my best reflector, and maybe matched it at the edge of the grid. I will have to do some more testing to try and understand what is going on but I was not expecting that. There is a color shift when I add the lens, it turns the light warmer white than its 3000K color.

The lens gives a much sharper cut off than the reflector so maybe my reflector needs to be longer?