| 摘要 |
At one end of the spread body 1, two light conductive members 2A, 2B on one part of which optical path conversion means 4 are formed are disposed in line with the spread body 1 and each optical path conversion means 4 of the light conductive members 2A, 2B is, when seeing perpendicularly to the spread body 1, disposed alternately with each other. Since each optical path conversion means 4 of the light conductive members 2A, 2B is not impeded with other optical path conversion means 4, illumination is carried out effectively.
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