| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem in which: in the configuration of a conventional projector, a speaker is fixed to the inside of a casing in such a way that the rear of the speaker projects; therefore, the projected rear of the speaker obstructs air flow to cool a light source, an image forming device, and a board.SOLUTION: A light source placed in a space formed by a surface of a rear outside of a pair of speaker boxes and a surface of an inner side of a casing is cooled by air flow generated by a fan, and the inside of the casing is ventilated by two openings provided in the casing. Thereby, the sound quality of the speaker becomes better, and exhaust heat efficiency can be improved by cooling the light source efficiently. |
