Sorry for my late reply, but I wrote to the guy who was making the danish signals for the RailWorks simulator.
He do have some more detailed drawings of the signals, but one of the best drawings is actually the one at blokposten.
Some very important informations are at the page along the drawing (sorry for not seeing this before
Before the 1980's the signals were 800 mm wide, and the distance between the two green lamps were 1500 mm.
After the 1980's the signals were reduced to 600 mm wide and a distance of 1000 mm between the green lamps.
The distance between the other lamps are 305 mm as shown at the drawing for the small main signal.
I hope this information makes it possible for you to make another danish main signal.
The smaller main signal is great, but it is mostly used as an exit signal for stations, and the larger signals with 3 or 4 lamps are much more common.
I recommend an entry signal with 4 lamps (showing one green or yellow+red), and a block signal with 3 lamps (showing two green or red).
The entry signal should have a small yellow sign below the signal, indicating that it's an entry signal to a station (these signs are also provided below the red/white distance markers).
Again I have to thank all guys for making a fantastic Nordic DLC