I think there is a misunderstanding of the nature of light creation in heated tungsten here.
Here's something you can try for yourself if you have the equipment to demonstrate my point, If you have a prism, look at the spectrum emitted by an incandescent light bulb, and then look at the spectrum given out by, say, a mercury lamp (those bright white fluorescent lamp). If you have a good enough resolution, you'll see a distinct difference between the two.
When I run my class for an experiment at using spectroscopes to look at light from discharge lamps (i.e. atomic gasses), I always throw a wrench by telling the student to also look at the light coming from an incandescent light bulb (maybe everyone should be made to look at this type of demonstration to hammer in the differences). They never fail to be amazed at the glaring (no pun intended) differences. For atomic gasses, you get to see clear, distinct lines, whereas the light from an incandescent bulb gives a rather continuous spectrum!
So already, one can suspect that the emission process here may not be identical!
I'll go even further by asking you to look at the atomic energy level of tungsten. Even if you don't get an exact series of energy states, you'll find that the transition lines do not give you the continuous spectrum that you observe with our spectroscopic measurement. So this is another hint that maybe, this is not an "atomic transition" light, but rather from something else. The issue of electrons in "orbits" may not hold in this case.
A very common idea that most people often miss is that atoms in solids can behave VERY DIFFERENTLY than when they are isolated. Case in point: graphite and diamond. Both are composed of carbon atoms. Yet,
how they are arranged to produce the solid can dramatically alter their properties! If you don't know that both are made up of carbon atoms, you'd think that they are very different elements!
The "tungsten" that has been formed into a wire has different properties than isolated tungsten atom! This is now no longer in the realm of atomic physics, but rather
solid state physics, because in a wire, there are a gazillion tungsten atoms all connected together as a conglomerate! There are behaviors of tungsten wires that are not present in isolated tungsten atoms! So simply looking at the characteristics of tungsten atoms in trying to explain all the properties of the wires will miss a lot of extra physics! The vibrational states (i.e. phonon states) that is present in the wire is severely missing in the isolated atoms. Yet, these phonon states are responsible for a zoo of properties of the solid.
We have addressed in this forum the QM explanation for light from such sources, and there is even a rather decent explanation for it that can be found
elsewhere.
As Phil Anderson used to say, More Is Different! That should be the take-home moral of the story here.
Zz.