Solid state lamp for retrofit

A lamp comprising:

• one or more circuit boards configured as a circumferential array defining an interior volume of the lamp, each circuit board having an interior surface, an exterior surface, a first edge, and a second edge;
• solid-state light sources mounted on the exterior surface of the one or more circuit boards;
• a heat sink located in the interior volume interior to the circumferential array and including internal fins extending into the interior volume, the heat sink having one or more external faces in thermal communication with the interior surface of the one or more circuit boards;
• an active cooling device positioned proximal to the interior volume configured to force airflow across the heat sink;
• a capper assembly located proximal to the first edge of the one or more circuit boards, the capper assembly including at least one aperture configured to vent the interior volume;
• and
• a dome assembly located proximal to the second edge, the dome assembly being substantially flat on top and including a secondary circuit board having solid-state light sources, the secondary circuit board including at least one aperture to allow air to pass through into the interior volume, wherein the dome assembly includes at least one vent for air flow into the interior volume.

A lamp comprising:

• one or more circuit boards configured as a circumferential array defining an interior volume of the lamp, each circuit board having an interior surface, an exterior surface, a first edge, and a second edge;
• solid-state light sources mounted on the exterior surface of the one or more circuit boards;
• a heat sink located in the interior volume interior to the circumferential array and including internal fins extending into the interior volume, the heat sink having one or more external faces in thermal communication with the interior surface of the one or more circuit boards;
• an active cooling device positioned proximal to the interior volume configured to force airflow across the heat sink;
• a capper assembly located proximal to the first edge of the one or more circuit boards, the capper assembly including driver electronics within the capper assembly;
• and
• a dome assembly located proximal to the second edge, the dome assembly including a secondary circuit board having solid-state light sources, the secondary circuit board including at least one aperture to allow air to pass through into the interior volume.