A light apparatus has a light module, a housing, and a direction switch structure. The light module has a light source. The light source emits light to a light emitting side of the light module. The housing stores the light module and has a first housing side and a second housing side. The direction switch structure is used by user for switching the light emitting side facing to the first housing side or the second housing side. When the light emitting side of the light module faces to the first housing side, a first light pattern is output by the light apparatus. When the light emitting side of the light module faces to the second housing side, a second light pattern is output by the light apparatus. The first light pattern and the second light pattern have different light characteristics.