Illumination device and projection device

The invention provides a lighting device and a projection device. The lighting device comprises a first heat source, a second heat source, a third heat source, a first porous heat dissipation element, a second porous heat dissipation element, a third porous heat dissipation element, a first flow guide pipe and a second flow guide pipe. The first porous radiating element is connected with a first heat source, the second porous radiating element is connected with a second heat source, and the third porous radiating element is connected with a third heat source. The first flow guide pipe is connected with the first porous heat dissipation element and the third porous heat dissipation element, and the second flow guide pipe is connected with the second porous heat dissipation element and the third porous heat dissipation element. By means of the layout of the lighting device, the heat dissipation efficiency of the heat source is improved in a limited space. 本发明提出了一种照明装置与投影装置。该照明装置包括第一热源、第二热源、第三热源、第一多孔散热元件、第二多孔散热元