LAMP BOX DEVICE CAPABLE OF CONVERTING POINT LIGHT SOURCE INTO UNIFORMLY DISTRIBUTED SURFACE LIGHT SOURCE

摘要

A lamp box device capable of converting a point light source into a uniformly distributed surface light source comprises a box body (1), at least a light converting reflective structure (2) and at least a point light source (3). The box body (1) comprises a containing room (11) and at least a side wall (12) surrounding the containing room (11). The light converting reflective structure (2) is provided at one side wall (12), the inner side of which is provided with multiple reflective plates (21) each facing the containing room (11) and forming an angle with the side wall (12). The point light source (3) is provided in the box body (1) corresponding to the reflective plates (21). When lightened, the point light source (3) casts light to the light converting reflective structure (2), and the reflective plates (21) reflects the light to the containing room (11), thus forming a soft, bright, uniformly distributed surface light source. The device applies a few point light sources to achieve a uniformly distributed surface light source, and is suitable for exhibition or advertising lamp box.