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Title:
ILLUMINATOR
Document Type and Number:
WIPO Patent Application WO/1990/005924
Kind Code:
A1
Abstract:
The illuminator according to this invention consists of a rod adapted to transmit the light entering one end thereof to the other end, diffusion stripes, which are formed on the outer circumferential surface of the rod so that the diffusion layer extends continuously or intermittently in the axial direction of the rod, and which are composed of particulate bodies of a high refractive index, a transparent protective cylinder covering the outer circumferential surface of the rod with a clearance left between surface of the rod with a clearance left between the same outer circumferential surface and the inner circumferential surface of the protective cylinder, and a seal member for sealing both ends of the circumferential clearance between the rod and protective cylinder. The light transmitted from one end to the other is sent out in the direction in which the light crosses the axis of the rod, by the diffusion-reflecting effect of the diffusion stripes and owing to the functions of the rod as a lens so as to make the light function as the illuminating light. This light is not accompanied by heat, nor does it require consideration for electric wiring and electric insulation. Accordingly, the light is suitable for the illumination of a refrigerating showcase and the operation of a lighted advertisement.

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Inventors:
YAMASHITA HIROSHI (JP)
FUJII KANENAGA (JP)
HAYAKAWA JUNJI (JP)
KOMIYAMA TORU (JP)
KOIZUMI SHUN (JP)
Application Number:
PCT/JP1985/000081
Publication Date:
May 31, 1990
Filing Date:
February 22, 1985
Export Citation:
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Assignee:
YAMASHITA HIROSHI (JP)
FUJII KANENAGA (JP)
HAYAKAWA JUNJI (JP)
KOMIYAMA TORU (JP)
KOIZUMI SHUN (JP)
International Classes:
F21V8/00; F25D27/00; (IPC1-7): G02B6/00
Foreign References:
JPS50144450A1975-11-20
JPS5165852U1976-05-24
JPS51118741U1976-09-27
JPS5810702A1983-01-21
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