There are a few ways to hide the wires in your projector. One option is to use cord covers. These can be placed over the cords and painted to match the wall color.
Another option is to use Velcro strips to secure the cords to the floor or baseboards. This can help to keep them out of sight and out of the way.
Finally, you can use wire management systems to organize and hide the cords. These typically consist of a series of hooks or clips that can be used to route the cords in a specific direction.