| 摘要 |
PROBLEM TO BE SOLVED: To illuminate light suitable to the thickness of a copying material form, and enhance work efficiency by arranging a second illumination part which is fixed to the end of a writing base part having a first illumination part in which a writing surface is used as an outgoing light surface and illuminates from the upper part, and switching two illumination parts. SOLUTION: A first illumination part 5 is arranged on the inside of a light non- transmitting thin box-shaped main body 1a of a writing base part 1, consists of a plate-shaped light conducting member 4 in which a writing surface is used as an outgoing light surface and a straight tube type lamp 7, and the light of the lamp 7 transmits a thin writing form. A second illumination part 2 comprising a box-shaped light non-transmitting cover 2a fixed to the end of the writing base part 1 and a light conducting member 8 which is housed in the cover 2a and in which the surface is used as an outgoing light surface illuminates from the upper part of the thick writing form on a writing surface 4a. The first illumination part 5 and the second illumination part 2 connected to the writing base part 1 with a hollow, cylindrical adjustable device 6 are selectively switched by switching means 3 comprising a reflecting plate capable of rotating in the outer circumference of the lamp 7 and an operation part having a groove 10 for illumination. |
