As used in this chapter:
(1) “Outdoor lighting fixture” means an automatically controlled, outdoor artificial illuminating device, whether permanent or portable, used for illumination or advertisement, including searchlights, spotlights, and floodlights, whether for architectural lighting, parking lot lighting, landscape lighting, billboards, or street lighting; and
(2) “Shielded” means a fixture that is covered in a manner that light rays emitted by the fixture, either directly from the lamp or indirectly from the fixture, are projected below a horizontal plane running through the lowest point on the fixture where light is emitted.