A display comprising: a light guide member; a liquid crystal cell arranged in front of the light guide member; a reflection sheet on a back surface of said light guide member; a light source (6a,6b,6c) positioned near an end portion of said light guide member; a rear housing; and a first heat radiation member positioned between said reflection sheet and said rear housing and contacting with said light source; wherein said rear housing is arranged at the back of said light guide member and at the back of said first heat radiation member, said first heat radiation member has a first projecting portion protruding toward an inner surface of said rear housing, such that a recess is provided between said first heat radiation member and said reflection sheet, and an outer surface of said first projecting portion of said first heat radiation member is in surface contact with said inner surface of said rear housing, wherein said rear housing is made by metal, said first heat radiation member consists of single sheet metal and contacts with said light source, said first heat radiation member has a second projecting portion protruding toward said rear housing contacting with said rear housing and mounted with a screw member, said rear housing has a recess portion concaved toward said second projecting portion and mounted with said screw member, said second projecting portion and said recess portion are fixed to each other by said screw member in a state in surface contact with each other, a protrusion height of said first projecting portion with respect to said reflection sheet is larger than a protrusion height of said second projecting portion with respect to said reflection sheet said light source is so constituted that a plurality of light sources is arrayed along one side constituting an outer peripheral portion of said rear housing, and said first heat radiation member and its first projecting portion extends along an array direction of said plurality of light sources a light guide member; a liquid crystal cell arranged in front of the light guide member; a reflection sheet on a back surface of said light guide member; a light source (6a,6b,6c) positioned near an end portion of said light guide member; a rear housing; and a first heat radiation member positioned between said reflection sheet and said rear housing and contacting with said light source; wherein said rear housing is arranged at the back of said light guide member and at the back of said first heat radiation member, said first heat radiation member has a first projecting portion protruding toward an inner surface of said rear housing, such that a recess is provided between said first heat radiation member and said reflection sheet, and an outer surface of said first projecting portion of said first heat radiation member is in surface contact with said inner surface of said rear housing, wherein said rear housing is made by metal, said first heat radiation member consists of single sheet metal and contacts with said light source, said first heat radiation member has a second projecting portion protruding toward said rear housing contacting with said rear housing and mounted with a screw member, said rear housing has a recess portion concaved toward said second projecting portion and mounted with said screw member, said second projecting portion and said recess portion are fixed to each other by said screw member in a state in surface contact with each other, a protrusion height of said first projecting portion with respect to said reflection sheet is larger than a protrusion height of said second projecting portion with respect to said reflection sheet said light source is so constituted that a plurality of light sources is arrayed along one side constituting an outer peripheral portion of said rear housing, and said first heat radiation member and its first projecting portion extends along an array direction of said plurality of light sources