Anthony: actually, the show boosted comic book sales all across the board during that time. Batman and Detective Comics had become low sellers -not well written and the "Bob Kane" art style had become outdated. They were being created for eight year olds, and had lost many older readers, and sales shrunk by a few hundred thousand copies per issue in the 1955-1964 period. The books came close to cancellation in 1964. The books were revitalized by editor Julie Schwartz and the men he picked to save the franchise (writers Gardner Fox, John Broome, and penciler Carmine Infantino), and sales went up enough to keep them running. However, it was the TV show that made Batman more popular than he ever been, and essentially insured he'd stick around for generations to come as others have reinterpreted the character several times since the TV show ended in 1968.
Julie loved the TV show and took it for the fun fantasy it was meant to be. But, after a couple of years, he got tired of the show's influence on the books, and was happy to change direction as soon as he could.