Heat generated from a LCD

[Thomas-Lc]

Hey Guys,

I am struggling to determine the heat generated from a LCD like this

http://www.a2l.fr/documentations/Dynascan/DS471LT4.pdf

Do you have any ideas ?

Thanks !

 

[LittleInch]

Says power on mode 280W (typ) 390W (Max)

Does it matter whether it comes from the front of the screen or the back? Heat is heat.



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[Thomas-Lc]

All the power supply to the LCD is equal to heat generated ?
For me, P_power = the power to diplay images minus the power loss
Am I wrong ?

 

[LittleInch]

Virtually all the power to the TV will turn into heat.

If you explained a bit more why you're trying to find out this might help...

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

 

[EdStainless]

The only other outlet for energy is the light, and that isn't much.
You have to remember that virtually all of the heat comes from the backlighting.
If you are running at reduced brightness your power loss will be much less.


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[Thomas-Lc]

Thank you, we can said that all the power used for the system is
essentially convert into heat ?

 

[IRstuff]

Ultimately, even the light emitted is impinging on absorbing materials that will result in increased temperature within the room, unless your display is pointed out a window.

If this is homework, you can use

https://en.wikipedia.org/wiki/Candela_per_square_metre

https://en.wikipedia.org/wiki/Luminous_efficacy

and other resources to figure out what 3000 nits on a 47" display means.

TTFN (ta ta for now)
I can do absolutely anything. I'm an expert!

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[Thomas-Lc]

Thank you very much for your answers !