light box
noun [ C ] uk/ˈlaɪt ˌbɒks/ us/ˈlaɪt ˌbɑːks/
治疗灯盒（用于治疗诸如季节性抑郁症、睡眠问题和皮肤问题等）
a box that shines with a bright artificial light similar to natural light, used to treat conditions such as SAD (= sadness and low energy caused by lack of light in winter), sleep problems, and skin problems