Sanyo Electric Co., Ltd.

Masashi Takazawa

Kazuo Takahashi

Norioki Fujimoto

Kiyondo Kobayashi

Yoshitaka Hara

Akira Okonogi

Takashi Odaira

Mamoru Kubo

Tomohito Koizumi

Wazoh Yamada

Fusao Terada

Masanobu Numao

Syozo Kato

Nobuaki Takai

Shigeyoshi Arie

Katuji Wakabayashi

Tetsuo Miyamoto

A solar battery indicator apparatus utilizing a capacitor for accumulating electrical power generated by the solar battery and light emitting diodes for emitting light on the basis of the electrical power supplied from the capacitor. An indicator body makes a prescribed indication on its front surface through the use of optical fibers. Several bundles of optical fibers are utilized with each bundle being associated with a plurality of optical fibers having one of their ends disposed to face an associated one of the light emitting diodes and the other end of each of the bundles of fibers being associated with a particular indicator. The configuration of optical fiber bundles utilize a control portion for controlling light emitting states of respective individual light emitting diodes. In another aspect a bundle of optical fibers have their connection to a light emitting diode such that the light emitting diode and the connection is positioned substantially in the center portion of a sign indicator controlled by the light emitting diode so that the curvature of the individual optical fibers is within a range for optimal light transmission.

Solar battery type indication apparatus

Signpost

Skylight having a light collecting system

A solar lighting apparatus according to the present inveniton is configured so that one lighting prism plate is rotatably arranged in a lighting portion or a plurality of lighting prism plates are rotatably arranged in the lighting portion at intervals of a predetermined distance, and a prism angle of each the lighting prism plate is controlled correspondingly to the height and azimuth of the sun so that the sunlight refracted by the lighting prism plates goes out in a predetermined direction. Therefor, the lighting prism plates and parts relevant thereto are formed under predetermined conditions. A solar lighting controller in a solar lighting apparatus operated under predetermined conditions for improvement of lighting efficiency, reduction of consumed electric power, etc., the controller comprising a solar position detector, a central processing unit including an arithmetic operation storage means such as a micro computer and a necessary means such as an optical axis sensor.

Solar lighting apparatus and controller for controlling the solar

Natural illumination device

Growing community of inventors

Gunma-ken, Japan

Masashi Takazawa