Light bulb, in a comic strip (4)
I believe the answer is:
idea
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">light bulb in a comic strip</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for idea that I've seen before include "Notion, belief" , "Fancy" , "Creative spark" , "Clue" , "Proposal" .)