PANEL LIGHT SOURCE FLOODLIGHT

摘要

PURPOSE: To efficiently use energy so as to provide a panel light source having soft and uniform light by providing a light source and a concentration mirror at one end of a transparent column having an n-gonal section and emitting light from the front surface of a transparent plate using a plurality of diffusion means and reflection means. CONSTITUTION: Light from a lamp 4 irradiates from a light concentration mirror 6 to a transparent column 1 having an n-gonal section (n is an even number from 4 to 12), is irregularly reflected by diffusion paint 2, and emitted from the upper face of the column 1 on the transparent panel 15. Deviated lift is reflected again on a reflection mirror 7 and a mirror finishing 3 so as to improve efficiency. Light penetrating into the plate 15 repeats total reflection in the plate 15 along with light reflected on the endmost mirror finishing face 17 and is irregularly reflected by the diffusion paint from the rear face so as to be emitted from the front face. Heat generation part is cooled down by cool wind penetrating from a blower 11 to an outlet 10. Therefore uniform and soft diffusion light can be provided from a providing surface light source and at the same time energy can be efficiently consumed.