Title:
ILLUMINATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/192830
Kind Code:
A1
Abstract:
At least a part of an illumination device (1) is accommodated in a hole provided in a ceiling. The illumination device (1) comprises: a case (10) of which one side in a Z direction is open; a first light source (25) which is positioned inside the case (10), of which the entire circumference is covered by an inner peripheral surface (88) of the case (10), and which emits first light towards a downwards region in the Z direction; a second light source (80) which is positioned radially outwards of the inner peripheral surface (88), and which emits second light towards an outwards region in an R direction; and an annular plate-shaped light guide plate (83) that includes an inner peripheral surface (83a) into which at least some of the second light enters, and that extends in the R direction. Thereby, the illumination device (1) can emit a spot light and diffused light that is easily spread over a wide area, and can emit beautiful and clear light.
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Inventors:
HASUO MAKOTO
Application Number:
PCT/JP2021/007729
Publication Date:
September 30, 2021
Filing Date:
March 01, 2021
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
F21V8/00; F21S8/02; F21Y115/10; F21Y115/15; F21Y115/20
Foreign References:
| US20120320588A1 | 2012-12-20 | |||
| JP2018147780A | 2018-09-20 | |||
| JP2012174528A | 2012-09-10 | |||
| JP2014056709A | 2014-03-27 | |||
| JP2010205439A | 2010-09-16 | |||
| JP2007027072A | 2007-02-01 |
Attorney, Agent or Firm:
YKI INTELLECTUAL PROPERTY ATTORNEYS (JP)
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