| 摘要 |
The present invention relates to a light box which uses an LED module as a light source and which is improved to ensure optimum lighting and have functionality. The light box comprises: frames which form each side of a rectangle, such that channels are formed in the inner sides of the rectangle formed by the frames; LED modules installed in the respective channels of the four sides of the rectangle formed by the frames; and a backlight module which has four sides that are inserted into the respective channels of the frames and supported by the frames, and which directs light emitted from the LED modules upwardly. The backlight module includes a light guide plate for guiding the light emitted from the LED modules; a reflection sheet which contacts a lower portion of the light guide plate so as to reflect the light upwardly; a finishing plate placed at the lower surface of the reflection sheet; one or more gelatin filters located on the light guide plate so as to perform optical filtering to adjust color temperature; and a transparent cover plate arranged on the gelatin filters. |
