Illumination device
An illumination device includes a housing portion having an opening for inserting an object to be housed, and a bottom face capable of supporting the object to be housed; a light source; and a light-guide plate having a light-emitting face and guiding a light of the light source to emit light from the light-emitting face. The light-guide plate is disposed between the opening of the housing portion and the bottom face, and at least one portion of the light-emitting face of the light-guide plate is arranged to form an acute angle with respect to the bottom face so as to directly irradiate the bottom face from a diagonal direction.
1. An illumination device, comprising:
a housing portion having
an opening-side housing portion including an opening for inserting an object to be housed and a wall member protruding outwardly from a lower portion of the opening-side housing portion, and
a bottom-face-side housing portion arranged below the opening-side housing portion and including
a bottom face adapted to support the object to be housed,
an inclined face arranged at an upper portion of the bottom-faced-side housing portion and tapered toward the bottom face,
an outer wall member arranged outside the inclined face, and
a groove arranged between the outer wall member and the inclined face;
a light source disposed at the housing portion; and
a light-guide plate disposed in the groove of the bottom-face-side housing portion and above the inclined face, for guiding a light of the light source, the light-guide plate including a light-emitting face forming an acute angle in respect to the bottom face to emit the light to directly irradiate the bottom face,
wherein the wall member covers the light-guide plate from above and surrounds the outer wall member.
2. An illumination device according to claim 1 , wherein at least one portion of the light-emitting face is arranged to form 5 to 85 degrees with respect to the bottom face.
3. An illumination device according to claim 1 , wherein the light-emitting face simultaneously irradiates the inclined face and the bottom face.
4. An illumination device according to claim 1 , wherein the light-guide plate includes a back face facing parallel to the light-emitting face.
5. An illumination device according to claim 1 , wherein the light-guide plate includes
a first piece to fit into the groove of the bottom-face-side housing portion, and
a second piece extending from the first piece and including
the light-emitting face, and
a back face facing parallel to the light-emitting face, for directing the light, and
the second piece is inclined upwardly and toward a center of the housing portion so that the light-emitting face faces the inclined face and the bottom face to simultaneously irradiate the inclined face and the bottom face.
6. An illumination device according to claim 3 , wherein the light-emitting face simultaneously irradiates the inclined face and a center portion of the bottom face.
7. An illumination device according to claim 5 , wherein the wall member includes
a first portion extending outwardly away from the center of the housing portion and above the light-guide plate, and
a second portion extending downwardly from the first portion to surround the outer wall member.