Lighting apparatus
First Claim
1. A lighting apparatus for causing light from a light source to enter an incident surface of a light guide plate and to project the light toward an object of illumination from an exit surface of the light guide plate extending in a direction perpendicular to said incident surface,wherein the light source is made by placing a light-emitting diode, on or near a light source rod extending in a longitudinal direction parallel to the incident surface of the light guide plate, and the light source rod and the light guide plate are integrally made by forming a slot in a common plate, said slot keeping said incident surface of the light guide plate and an inner surface of said light source rod away from each other, a back wall of said light source rod extends parallel to said incident surface, and said slot extends parallel to said incident surface of the light guide plate to near longitudinal ends of the lighting apparatus.
1 Assignment
0 Petitions
Accused Products
Abstract
A lighting apparatus for causing the light from a light source to enter the incident surface of a light guide plate and to project the light toward an object of illumination from the exit surface of the light guide plate extending in the direction perpendicular to the incident surface. The light source is made by placing a light-emitting diode on or near the light source rod extending in the longitudinal direction parallel to the incident surface of the light guide plate. The light source rod and the light guide plate are integrally made by forming a slot in a common plate.
-
Citations
25 Claims
-
1. A lighting apparatus for causing light from a light source to enter an incident surface of a light guide plate and to project the light toward an object of illumination from an exit surface of the light guide plate extending in a direction perpendicular to said incident surface,
wherein the light source is made by placing a light-emitting diode, on or near a light source rod extending in a longitudinal direction parallel to the incident surface of the light guide plate, and the light source rod and the light guide plate are integrally made by forming a slot in a common plate, said slot keeping said incident surface of the light guide plate and an inner surface of said light source rod away from each other, a back wall of said light source rod extends parallel to said incident surface, and said slot extends parallel to said incident surface of the light guide plate to near longitudinal ends of the lighting apparatus.
-
21. A lighting apparatus for causing light to project toward an object of illumination, comprising;
-
a light source;
a light guide plate having an incident surface and an exit surface extending in a direction perpendicular to said incident surface, light from the light source entering the incident surface of the light guide plate; and
a light source rod extending in a longitudinal direction parallel to the incident surface of the light guide plate; and
a slot formed in a gap between a longitudinal central portion of the incident surface of the light guide plate and a longitudinal central portion of an inner surface of said light source rod, thereby keeping the longitudinal central portion of the incident surface of the light guide plate and the longitudinal central portion of the inner surface of said light source rod away from each other, a back wall of said light source rod extending parallel to said incident surface of the light guide plate, and said slot extends parallel to said incident surface of the light guide plate, wherein the light source is made by placing a light-emitting diode, on or near the light source rod, and the light source rod and the light guide plate are integrally made by forming a slot in a common plate. - View Dependent Claims (22, 23, 24)
-
-
25. A lighting apparatus for causing light from a light source to enter an incident surface of a light guide plate and to project the light toward an object of illumination from an exit surface of the light guide plate extending in a direction perpendicular to said incident surface comprising:
-
a prism array on a front surface or a rear surface of the light guide plate;
a plurality of outer protective layers laid on an outside of the prism array through at least an intermediate layer; and
a plurality of said intermediate layers, wherein a refractive index of a first inner intermediate layer is larger than a refractive index of the light guide plate and larger than a refractive index of an outer second intermediate layer, wherein the light source is made by placing a light-emitting diode, on or near a light source rod extending in a longitudinal direction parallel to the incident surface of the light guide plate, and the light source rod and the light guide plate are integrally made by forming a slot in a common plate.
-
Specification