F - Mech Eng,Light,Heat,Weapons – 21 – V
Patent
F - Mech Eng,Light,Heat,Weapons
21
V
240/157
F21V 7/00 (2006.01) F21S 11/00 (2006.01)
Patent
CA 1222494
ABSTRACT A method for illuminating a spot inside a tunnel of a highway by the use of a solar ray collecting device which is to be used to focus a solar ray and guide it into an optical conductor. The solar ray transmitted through the optical conductor would illuminate an entrance portion of the tunnel and a light-emitting portion of the optical conductor would disperse so as to gradually weaken the illumination inside the tunnel in accordance with an increase of distance between the entrance portion and a spot to be illluminated in an inner space of said tunnel. 12
455758
Mori Kei
Robic Robic & Associes/associates
LandOfFree
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