PROBLEM TO BE SOLVED: To provide a simple device capable of quickly eliminating jet lag anywhere in which, when a person returns to Japan from a trip to a remote country, his or her body hardly fits into Japan time after returning home since there is a big time difference between Japan time and the time of that country.SOLUTION: An LED illuminator, for example, is caused to adhere to a chair 33 or the like, or is placed on a floor, and a light 29 of the LED is irradiated onto a knee back 28 while a person is lying or sitting. Or, a light other than the light of the LED is irradiated onto the knee back 28.SELECTED DRAWING: Figure 8【課題】遠国に旅行して日本に帰国する場合、その外国と日本との間に大きい時差があるために、帰国しても体がなかなか日本の時間に馴染まない時差ボケを、どこででも速やかに取り除くことができる簡易な装置を提供する。【解決手段】例えばＬＥＤ発光体をイス３３などに付着し又は床の上に置き、寝たり座ったりした姿勢で、ＬＥＤの光２９を膝裏２８に照射する構成とする。また、ＬＥＤ以外の光をを膝裏２８に照射する構成とする。【選択図】図８
