Projector Cooling

[majorloser]

Has anybody ever tried to add more cooling fan to a projector? I am going to try adding additional fans and maybe even an exhaust duct for my ceiling mounted Optoma H78-DC3. My plan is to add an additional 60mm, 80mm and 92mm fan on the cooling ports of the projector. I was planning on using the projector's 12V trigger to fire a relay to a 12V tranformer/power supply and use a pot to control the speed (and noise level).

I think our Resident Highlander might have tried this, has anybody else had any success?

After an hour or two the projector just CRANKS heat into the room.

 

[mtrycrafts]

I was planning on using the projector's 12V trigger to fire a relay to a 12V tranformer/power supply and use a pot to control the speed (and noise level).
.

No. But, if you are thinking of this, be sure the 12V trigger has sufficient capability to throw a relay. I am talking putting out the necessary current. Some new projectors don't and need a special one. 2.5ma is peanuts. I tried a reed relay at 11ma and would not operate
So, before you start experimenting, find out what it can output in ma.

 

[brian32672]

I tried a reed relay at 11ma and would not operate.

Here is one that should work. (but it's 50.00)
http://www.basshome.com/product_12003_detailed.htm

And for specialty fans, these are the ones that I have used -
(they have about 700 fans to choose, that will run on 0.02amp to 5+ amp, so search for what you need)
http://www.delta.com.tw/product/cp/dcfans/dcfans_main.asp

also go here - http://www.sidewindercomputers.com/delhigper.html

 

[RLA]

Hello
I would not be comfortable blowing air into the intake of the projector.
I think it would be wiser to turn the fan around and use it to draw hot air away from the discharge vent.

 

[majorloser]

Hello
I would not be comfortable blowing air into the intake of the projector.
I think it would be wiser to turn the fan around and use it to draw hot air away from the discharge vent.

I was only thinking about an 80mm fan mounted directly to the filter holder. It wouldn't add much air. I really just want to add a fan to the exhaust just to help boost the air toward the AC intake vent (which is only about 3 feet away). And maybe a small duct to get it there.

I have tray ceiling so the heat just stays up there.