I have an alcoholic DH (now sober) as well, and I would say your DH would certainly seem to be a problem drinker, for the reasons llaregg highlighted above.
Even if he isn't (and I don't think it is necessary to issue labels at this stage), his going out and getting drunk is clearly affecting the family.
When you're in together, what kind of things do you do? Do you slump on the sofa and watch TV silently and then go to bed?
I agree with BiteofCock re making family life and evenings enjoyable. How about going out for a walk in the evening, or getting out a DVD, reading, listening to music, exercise, board games, box set of a shared tv series you enjoy - whatever things you like doing really.
If you can sit with him calmly and say that of course you don't mind him going out, but you worry about him when he gets so drunk that he puts himself in danger, and can he really try his hardest not to drink to that level.
Of course, if he is an alcoholic, he will agree with you, change for a couple of weeks and then go right back to it, as he will be unable to stop.
But let's hope he isn't, and actually has just got into a habit that he can change.
Good luck - and if he is an alcoholic, don't panic! DH and I are now both drink free and have never had such a full and interesting life.