Patent ID: 8714803
Filing Date: 2014-05-06
Classification: F21V,G02B,G09F

Abstract:
1. A lighting device using a light guide plate, comprising: a light guide plate, formed by a single monolithic slab, having elongated dividing grooves extended from a rear surface of the light guide plate for dividing a front surface which light beams are emitted into a plurality of portions by blocking of the light transmission through the dividing grooves; light source units that emit the light beams toward the sidepiece of the light guide plate, wherein the light source units are inserted into the dividing grooves; a reflection sheet coupled to a rear surface of the light guide plate, forming a light reflection unit, to reflect light beams, which are emitted from the light source units, in a direction of a front surface of the light guide plate; and one selected from among a colored sheet, a piece of paper and a piece of cloth, which is attached to the rear surface of a specific block of the plurality of portions of the light guide plate, such that different colors and different tactile senses are imparted to the specific block of the light guide plate, compared with other regular blocks of the light guide plate having rear surfaces attached by the reflection sheets, wherein the light reflection unit is provided with either light reflection grooves or a printed layer, wherein each of the light source units is mounted so as to emit light to any or all of two portions of the light guide plate, which are obtained by dividing the light guide plate along a boundary line of each of the dividing groove.