A display comprising: a light guide having a light diffusion sheet and a lens sheet on the front surface of itself and a reflection sheet in back surface of itself, a liquid crystal cell arranged in front of said light guide; a light source portion (6a, 6b, 6c) arranged on a side portion of said light guide; a first heat radiation member arranged at the back of said light guide, being in contact with said light source portion (6a, 6b, 6c); a rear housing arranged at the back of said first heat radiation member to cover said first heat radiation member; wherein said first heat radiation member has a first projecting portion protruding toward an inner surface of said rear housing, such that a recess portion is provided between said first heat radiation member and said reflection sheet, wherein an outer surface of said first projecting portion of said first heat radiation member being in surface contact with said inner surface of said rear housing, characterized in that the display further comprising: a cover member partially covering a rear surface of said rear housing so that said rear surface of said rear housing is partially exposed outward, wherein said first heat radiation member is in contact with said reflection sheet in a portion between a portion in which said light source portion is arranged and said first projection portion, and is in contact with said reflection sheet in a portion which extends from said first projection portion in a direction away from said light source portion, wherein said first heat radiation member is arranged in a region of said rear housing exposed outward from said cover member. a light guide having a light diffusion sheet and a lens sheet on the front surface of itself and a reflection sheet in back surface of itself, a liquid crystal cell arranged in front of said light guide; a light source portion (6a, 6b, 6c) arranged on a side portion of said light guide; a first heat radiation member arranged at the back of said light guide, being in contact with said light source portion (6a, 6b, 6c); a rear housing arranged at the back of said first heat radiation member to cover said first heat radiation member; wherein said first heat radiation member has a first projecting portion protruding toward an inner surface of said rear housing, such that a recess portion is provided between said first heat radiation member and said reflection sheet, wherein an outer surface of said first projecting portion of said first heat radiation member being in surface contact with said inner surface of said rear housing, a cover member partially covering a rear surface of said rear housing so that said rear surface of said rear housing is partially exposed outward, wherein said first heat radiation member is in contact with said reflection sheet in a portion between a portion in which said light source portion is arranged and said first projection portion, and is in contact with said reflection sheet in a portion which extends from said first projection portion in a direction away from said light source portion, wherein said first heat radiation member is arranged in a region of said rear housing exposed outward from said cover member.