Illuminant module and optical projection device

An optical projection device, comprising:

• an illuminant module, comprising:
• a lamp, comprising:
• a lampwick;
• a reflector, wherein at least one portion of the lampwick is disposed in the reflector, the reflector is capable of making light emitted by the lampwick form an illuminating light beam, and the reflector has a first opening to allow the illuminating light beam to pass through;
• and
• a guide cap, connected to the reflector and covering the first opening of the reflector, wherein the guide cap has a guide wall, a first air outlet, and
• a first air inlet;
• a lamp holder, having a space, a second air inlet corresponding to the first air inlet, a third air inlet adjacent to the second air inlet, a fourth air inlet adjacent to the third air inlet, a second air outlet corresponding to the first air outlet, and a third air outlet adjacent to the second air outlet, wherein the lamp is disposed in the space;
• a blower, disposed at the second air inlet and outside the space, wherein the blower is capable of providing a first air current, and the first air current flows into the reflector through the second air inlet and the first air inlet and flows out of the reflector through the first air outlet and the second air outlet;
• and
• an axial fan, disposed adjacent to the third air inlet and the fourth air inlet and outside the space, wherein the axial fan is capable of providing a second air current flowing into the space through the fourth air inlet and providing a third air current flowing into the space through the third air inlet, the second air current flows through a periphery of the reflector and flows out of the space through the third air outlet, and the third air current flows along the guide wall and flows out of the space through the second air outlet;
• a light valve, disposed on a transmission path of the illuminating light beam, wherein the light valve is capable of converting the illuminating light beam into an image light beam;
• and
• a projection lens, disposed on an transmission path of the image light beam, wherein the projection device is capable of projecting the image light beam on a screen.