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Title:
LIGHTING APPARATUS
Document Type and Number:
Japanese Patent JP2011070808
Kind Code:
A
Abstract:

To simplify a power-supply structure to light sources 7, 8, and 9 and improve the efficiency of use of light from the light sources 7, 8, and 9.

A lighting apparatus 100 includes a light guide member 1 which guides light from the light source 7, and a light guide member 2 which guides light from the light sources 8 and 9, the light guide members 1 and 2 being stacked in the direction of the axis of the lighting apparatus 100. Light guided by the light guide member 1 is emitted out of the outer peripheral surface 1a of the light guide member 1, and light guided by the light guide member 2 is emitted out of the outer peripheral surface 2a of the light guide member 2. A through-hole 3 is formed on the light guide member 1. The light source 7 is disposed to face an end face 1b of the light guide member 1, while the light sources 8 and 9 are disposed to face an end face 2b of the light guide member 2 across the through-hole 3. The inner peripheral surface 1d of the light guide member 1 is provided with a reflecting means 5. Light from the light sources 8 and 9 is guided to travel through the through-hole 3, passing through the end face 2b of the light guide member 2 to come into the light guide member 2. Out of light emitted from the light sources 8 and 9, light having reached the inner peripheral surface 1d of the light guide member 1 is reflected by the reflecting means 5.


Inventors:
OKI YOJI
TSUCHIYA KINYA
Application Number:
JP2009218944A
Publication Date:
April 07, 2011
Filing Date:
September 24, 2009
Export Citation:
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Assignee:
STANLEY ELECTRIC CO LTD
International Classes:
F21S2/00; F21V8/00; F21Y101/02
Domestic Patent References:
JPS599602A1984-01-19
JP2009104868A2009-05-14
JPH05298534A1993-11-12
JP2006100242A2006-04-13
JP2004014280A2004-01-15
JP2002133909A2002-05-10
JP2007194132A2007-08-02
JPH11213730A1999-08-06
JPH08235925A1996-09-13
JPH0394292A1991-04-19
JP2003132713A2003-05-09
Attorney, Agent or Firm:
Kozo Sakakibara