Heat dissipation device

A heat dissipation device, comprising:

• a frame body having an airflow channel therein;
• a first partition plate disposed inside the frame body for separating one side of the airflow channel into a first channel and a second channel;
• a second partition plate disposed inside the frame body for separating the other side of the airflow channel into a third channel and a fourth channel;
• a first flow guiding structure laterally disposed at one end of the second partition plate for isolating the fourth channel from the second channel;
• and
• a second flow guiding structure laterally disposed at one end of the first partition plate for isolating the first channel from the third channel,
• wherein the first partition plate, the first flow guiding structure, the second flow guiding structure and the second partition plate collectively form a first flow channel communicating the first channel and the fourth channel and a second flow channel communicating the second channel and the third channel, and wherein the first flow channel and the second flow channel are separate from one another.