LIGHT UNIT

摘要

Projection portions (22) are formed on the sides (26) of a rectangular light guide except the light incident side (44) and its opposite side (46). The projection portions (22) are fitted in the recess portions (24) formed in a frame (20), and thereby the light guide (16) is secured to the frame (20). A glass plate (38) of a liquid crystal display panel (18) is fixed to the frame (20) by means of double-sided adhesive tape (34). When an impact is given, the shock produced by the collision between the light guide (16) and the glass plate (38) can be lessened. The projection portions (22) are formed over the sides (26) of the light guide (16), and therefore no interference fringes of light composed of bright and dark lines appear near the sides (26). As a result the light guide (16) can have a size a little larger than the display area (28) of the liquid crystal display panel (18). Thus, a small, lightweight light unit hardly damaging the light guide and liquid crystal display panel when it receives an impact and producing no light interference fringes in the display area.