Aircraft part .. but what is it and from what bird?

Thanks for taking a look,
i recently bought a box of aircraft bits and pieces and am trying to work out which are related.
So i have ID,d a part of a Heinkel HE111 and was wondering if this light/ vent thing is part of same aircraft.
No markings at all to go on... maybe its not even from an aircraft ??

Looks like a vehicle headlamp black-out mask.