What Philips LEDs have you got?
Philips Vision LED Globe E27. The heatsink becomes far too hot to touch, but the Osram does the same thing too in a completely unenclosed fitting after some minutes.
According to the Philips website they output 350 lumen, and consume 7W, so 50 l/W. That is almost as good as a CFL (about 50-60 l/W).
The Philips MASTER LEDbulb has better specs: 470 lumen, 8W, so 59 l/W. Can't find any prices for them.
A 100W incandescent bulb is about 1200 lumen, 40W 480 lumen (12 l/W).