| 摘要 |
To provide a line light irradiation device in which waste of the light sources can be reduced and illuminance unevenness between the light source units can be prevented. A line light irradiation device 1 includes a plurality of light source units 6 on which a plurality of light source mounting substrates 10 are juxtaposed on a base 71 in a row, and the plurality of light source units 6 are juxtaposed in a row. The plurality of light source mounting substrates 10 are positioned on and fixed to the base 71 at predetermined intervals. Thus, if a light source in a certain light source unit becomes defective, this light source unit can be removed so as to exchange only the light source mounting substrate on which the defective light source is mounted. Therefore, the normal light sources can be left as they are as much as possible, and waste of the light sources can be reduced. Further, the light source mounting substrates 10 are positioned and fixed at predetermined intervals, and thus dimensional errors do not accumulate in the light source mounting substrates 10 at the juxtaposition ends . Accordingly, illuminance unevenness can be prevented between adjacent light source units. |
