| 摘要 |
<P>PROBLEM TO BE SOLVED: To realize improvement in cooling efficiency without causing invasion of dust or the like. <P>SOLUTION: A cabinet 5 having an arrangement face part 6 at which a plurality of light sources 13a are arranged, and a blasting means 15 of sending cooling air to suppress a temperature rise of the light sources are installed. An air flow passage 16b communicating with a face at which the light sources are arranged and an inner space of the cabinet on the opposite side by pinching the arrangement face part of the cabinet is formed, a sealed space 19 isolated from the outside by the inner space and by the air flow passage of the cabinet is formed, and the cooling air is made to be circulated by being sent in a prescribed direction in the sealed space by the blasting means. <P>COPYRIGHT: (C)2007,JPO&INPIT |
