SYSTEM FOR DAYLIGHTING - MITSUBISHI RAYON CO

Title:

SYSTEM FOR DAYLIGHTING

Document Type and Number:

Japanese Patent JP2003016816

Kind Code:

A

Abstract:

To provide a very simple and inexpensive daylighting system using a sun-following system.

In this daylighting system, provided with the sun following system for collecting sunlight, and for regulating an optical path of the sunlight to emit the sunlight toward a prescribed direction uses, as the sun-following system, the sun-following system comprising paired azimuth direction control sensors and paired altitude direction control sensors respectively comprising a sustance, of which the electrical resistance value varies in response to luminous energy of received light, a voltage comparison circuit for receiving electrical outputs from the respective sensors in pairs, to compare respective voltages one another, and an azimuth-directional drive and an altitude directional drive for regulating the position of a total-reflection prism sheet face to face the total-reflection sheet prism so as face an azimuth and an altitude of the sun, based on a signal transmitted from the voltage comparison circuit, when the voltage difference exceeds a prescribed value.

Inventors:

SAKAI NOBUHIRO
SATOU TOSHIO
KOBAYASHI MASANORI

Application Number:

JP2001201856A

Publication Date:

January 17, 2003

Filing Date:

July 03, 2001

Export Citation:

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Assignee:

MITSUBISHI RAYON CO
RYOKO KK

International Classes:

G02B26/08; F21S11/00; G02B27/00; G05D3/00; H01L31/04; (IPC1-7): F21S11/00; G02B26/08; G02B27/00; G05D3/00

Domestic Patent References:

JP2878549B2	1999-04-05
JPH0354421U	1991-05-27
JPH08115609A	1996-05-07

Foreign References:

US5317145A

1994-05-31

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