Patent ID: 7448777

Claim:
A light source module, comprising: a case having an airflow outlet thereon; a light source disposed in the case; a first air-circulation device disposed in the case, the first air-circulation device and the airflow outlet being located at opposite two sides of the light source, wherein the first air-circulation device is located at the front of the light source and blows a first airflow towards the inside of the light source; a second air-circulation device disposed in the case, the second air-circulation device and the first air-circulation device being located at a same side of the light source, wherein the second air-circulation device is located at a side of the light source and blows a second airflow towards the periphery of the light source; and an airflow guider disposed in the case, comprising a first stream-guiding part and a second stream-guiding part connected to said first stream-guiding part, the first stream-guiding part and the airflow outlet being located at a same side of the light source, the second stream-guiding part being over the light source, wherein the first airflow blown into the inside of the light source leaves the inside of the light source at the front of the light source and then flows towards the first stream-guiding part, and then the first airflow is guided by the second stream-guiding part to flow from the front of the light source towards the second air-circulation device, such that the first airflow with a first temperature mixes up with the second airflow with a second temperature, wherein the first temperature is higher than the second temperature, and the first airflow and the second airflow finally exit from the airflow outlet with a moderate temperature.