PROBLEM TO BE SOLVED: To provide an incubator 11 in which a handling person can perform necessary work in an infant accommodation space 25 of the incubator 11 easily and sufficiently since an almost entire opening 44 for inserting hands is actually opened when the handling person opens a hand insertion door 38 and inserts his or her hands into the opening 44 for inserting hands.SOLUTION: In a first state that a first support frame member 103 is attached to a peripheral wall part 22 of an infant accommodation space 25, an incubator is configured so that an opening 44 for inserting hands can be opened or closed by a hand insertion door 38. In a second state that a second support frame member 82, a third support frame member 84, and a diaphragm window forming member 43 are attached to the peripheral wall part 22, the opening 44 for inserting hands is configured so as to function as a diaphragm window 97.SELECTED DRAWING: Figure 11【課題】 取扱者が手入れ扉３８を開放してからこの取扱者の手を手挿入用開口４４に挿入したときに、手挿入用開口４４のほぼ全部が実際に開放されるために、取扱者が保育器１１の児収容空間２５内での必要な作業を容易にかつ十分に行うことができる保育器１１を提供する。【解決手段】 第１の支持枠部材１０３が児収容空間２５の周壁部２２に取り付けられている第１の状態においては、手挿入用開口４４が手入れ扉３８によって開放および閉鎖され得るように構成されるとともに、第２の支持枠部材８２、第３の支持枠部材８４および絞り窓形成部材４３のそれぞれが周壁部２２に取り付けられている第２の状態においては、手挿入用開口４４が絞り窓９７として機能し得るように構成されている。【選択図】図１１
