Lighting device

A lighting device, comprising:

• a housing, wherein the housing is a hollow tubular structure;
• an elastic reflective element, configured in the housing, wherein the elastic reflective element has a resisting surface and a reflective surface opposite to each other;
• a light-emitting unit, configured on the elastic reflective element to provide an illumination beam to the reflective surface;
• and
• a switching module, configured in the housing, and adapted to press against the resisting surface to transform a shape of the reflective surface;
• wherein when the switching module has not pressed against the resisting surface, or when the switching module has pressed against the resisting surface but has not yet transformed the shape of the reflective surface, the reflective surface assumes a first state, and the illumination beam reflected by the reflective surface has a first light pattern, and when the switching module presses against the resisting surface and transforms the shape of the reflective surface, the reflective surface assumes a second state, and the illumination beam reflected by the reflective surface has a second light pattern.