I have a similar issue on a few streets I ride although only one of them has an official bike lane, the rest it is the shoulder edge. In such cases I normally "take the lane" and when I have a few cars backed up behind me wanting to pass and there is an open area of some length between trash cans I will signal a right turn and slip over into the bike-lane/shoulder-edge and make a lasso circular motion with my up-stretched left arm to signal the backed up cars to make their move and pass me and as soon as they have I signal a left lane change and I'm back out in the main lane and "taking the lane" until once again I have a line of cars backed up behind me AND there is an open stretch in the bike lane between trash cans sufficient enough to allow me to slip over into it for long enough to allow them to pass. If there aren't any large breaks between trash cans to allow me to still continue at my pace while they pass I don't get over and I hold the lane.

That is my $0.02 and how I handle the situation - YMMV.