LIGHTING FIXTURE

• Main Authors: MURA YASUO, AKAHORI MITSURU, MATSUSHITA KENJI
• Format: Patent
• Language: English
• Published: 08.06.2006
• Subjects: BLASTING; ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; HEATING; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21Sand F21V, RELATING TO THEFORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THELIGHT EMITTED; LIGHTING; MECHANICAL ENGINEERING; NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS; WEAPONS

PROBLEM TO BE SOLVED: To provide a lighting fixture that can be charged by a light source irradiating slight artificial light. SOLUTION: The lighting fixture 100, arranged in the vicinity of the light source 10 irradiating slight artificial light, is of a charging type storing electricity by converting light energy of the artificial light into electric energy, and is provided with a solar battery 20, DC/DC converter 30, storage battery 40, light-emitting drive circuit 60, high-brightness LED 70, light and shade detecting part 75, detecting circuit 80, electronic switch or the like. The DC/DC converter 30 lowers voltage of a power converted by the solar battery 20 at the start of charging, and amplifies current. The electronic switch 90 directly couples the solar battery with the storage battery 40 to continuously charge after a terminal voltage (or current) of the storage battery 40 reaches a given value, and further, when a current of the storage battery 40 reaches a specified value, electric connection between the solar battery 20 and the DC/DC converter 30 is automatically cut off to complete charging of the storage battery 40. COPYRIGHT: (C)2006,JPO&NCIPI