There are a range of different skylights that can meet your needs.  If you want something that is in the background, providing daylight but looking similar to a light fitting, then you should consider a skylight or tubular daylighting device such as a SkyTunnel.  Alternatively, if you want to add a design feature to your room, a Velux skylight or Atlite roof window might be a better solution.  A roof hatchway can add light into your roof space as well as allowing safe and easy access to your roof for air conditioning, solar panel or other roof maintenance.