| 摘要 |
PROBLEM TO BE SOLVED: To make it easy to attach a fluorescent lamp having apertures to an irradiation unit and make it possible to adjust an attachment angle even after the fluorescent lamp is attached thereto. SOLUTION: Gear-like indentationare provided on the outer circumference of a cap 10a of a lamp and recessed parts thereof engage with protrusions 13f formed on a lamp locking part 13e. For attaching the above-mentioned lamp to a base table 13a, the lamp is set thereon with a lamp holder 13d detached and then this lamp holder 13d is fixed with a screw or the like. By doing so, an attachment angle around the tube axis of the lamp can be adjusted to an arbitrary value. Therefore, the attachment angle around the tube axis of the lamp can be adjusted so that a light distribution state to a document surface of a copying machine, a scanner, or the like may be optimum. |
