A bubble adapter for installed security cameras, such as Pan/Tilt/Zoom (“PTZ”) security cameras fits over the head of the PTZ camera, and attaches to a mounting region of a base of the security camera via a field-deployable attachment mechanism. The bubble of the bubble adapter protects and conceals the head of the PTZ camera and its components. Using the bubble adapter, service personnel add bubbles to existing PTZ camera installations that are lacking bubbles in the field. This avoids the expense and downtime associated with the current method for adding bubbles to PTZ camera installations lacking bubbles. The current method requires removing the installed PTZ cameras, and replacing them with PTZ cameras having factory-installed bubbles. In addition, the bubble adapter provides an integrated airflow system that allows the security camera to maintain thermal control when the bubble adapter is attached to the security cameras.