Bobby Brown -- Somber Walk to Visit Bobbi Kristina in Hospital (VIDEO)

A somber Bobby Brown showed up at Emory University Hospital Wednesday to visit his daughter Bobbi Kristina ... who is still in medical peril after Saturday's near drowning.

Bobby did not answer the photog's questions about his daughter's condition. As we reported, her signs improved earlier in the week -- Bobbi Kristina's brain swelling went down and her eyes are showing some movement. But doctors say they can't predict the outcome since she was without oxygen for somewhere between 2 and 5 minutes as she lay face down in her bathtub.

Bobbi Kristina was transferred to Emory Tuesday because the hospital is renowned for treating brain injuries.

Bobby is also dealing with family drama. We're told he and his family are not getting along with Whitney Houston's relatives, and he also has beef with Nick Gordon.