The present invention relates to a lamp for a vehicle, wherein light is caused to be incident into a
light guide panel from a side surface of the plate-shaped
light guide panel, the light is propagated within the
light guide panel by means of total reflection and scattered by a scattering pattern formed on a rear surface of the light guide panel so that the light can be radiated to a front surface of the light guide panel, and the light radiated to the front surface is then radiated forward with a predetermined pattern by means of a cover member provided with a lens pattern. A lamp for a vehicle according to the present invention comprises a housing having an opening through which light radiates; a light-transmitting cover member which has a light incidence plane and a light
exit plane, and is fixedly installed on the housing to hermetically cover the opening of the housing and provided with a lens pattern formed on the light incidence plane and / or the light
exit plane; a plate-shaped light guide panel which has a light incidence plane defined at a side surface thereof to receive light and a light
exit plane defined at a front surface thereof to face the cover member and is provided with a scattering pattern for scattering light incident on the light incidence plane thereof toward the light exit plane thereof; a
light source installed at a portion adjacent to the light incidence plane of the light guide panel to emit the light to the light incidence plane; and a reflection plate installed on a rear surface of the light guide panel to reflect the light toward a front surface of the light guide panel.