Which lamp bulb for a stronger & warmer lighting?
Every cousin-in-law I know comes to me with the same story: They need a way to know when a light bulb has burned out.  "Well, just look at it."  "Well, I can't, it's out in the doghouse or chicken coop".  (suspecting what's really called for here is a switch to LED) "Why do dogs/chickens need light?" "They don't. They need heat.  I'm using it to heat their space during the winter chills.  Loss of the heat places them in danger."  

#include picard_facepalm.gif

And my answer is... Get an Actual Heater. And I go hit McMaster-Carr and (we're in 120V territory) find an industrial 240V heating element 4x their desired wattage, or a 480V element 16x their desired wattage, and I say "Install this".  And then they do, and 2 winters later they say "Thank you". 

Heat

The problem here is that you are abusing your light to be a comfort heater.  And you have confused "warm" thermally and "strong" as signs of a good bulb (actually, in lighting, "warm" means something else, it means color of light blue vs orange).  Actually they are signs of an inefficient bulb that starts fires.  

So find a way to get an actual heater that gives you the warmth you crave.  It can be hard finding a 40W heater, and I gather you're outside North America, which makes things tougher - as any heating element will either be 230V or 400V, and running a 400V heater on 230V gives 1/3 the heat. (230/400 squared).  

Light

Halogens are good for roughly 15 lumens/watt.  So your 40W halogen was about 600 lumens. 

You say your new lamp is 200 lumens. That explains why it seems dimmer. It is dimmer.

But that's because you willingly chose an LED bulb that is very dim, even by that bulb size's standards. For instance "Buy this with this" engine on Ikea's site recommends this bulb, which is 470 lumens.

I don't know what to tell you. You bought it.  Buy something else.