Light guide column, light emitting structure and illumination device using the same

A light emitting structure, comprising:

• a circuit board;
• at least one light source, disposed on the circuit board;
• at least one light guide column, disposed on the circuit board and on the top of the light source, wherein the light guide column comprises:
• a column body having a first end and a second end opposite to the first end, the column body is axially extending;
• a cavity on the first end for gathering the light source;
• a reflection structure on the second end, when light emitted from the light source is transmitted through the column body to the reflection structure, a portion of the light is reflected by the reflection structure to emit toward the lateral surface of the column body and others transmitted to the front side direction;
• and
• a micro-structure being on the lateral surface of the column body can facilitate the emitting light from the column body uniformly.

An illumination device, comprising:

• a holder;
• a circuit board, disposed on the holder;
• at least one light source, disposed on the circuit board;
• and
• at least one light guide column, disposed on the circuit board and on top of the light source, wherein the light guide column comprises:
• a column body having a first end and a second end opposite to the first end;
• a cavity on the first end for gathering the light source;
• a reflection structure on the second end, when light emitted from the light source is transmitted through the column body to the reflection structure, a portion of light is reflected by the reflection structure to emit toward the lateral surface of the column body and others transmitted to the front side direction;
• and
• a micro-structure being on the lateral surface of the column body can facilitate the emitting light from the column body uniformly.