Title:
照明器具
Document Type and Number:
Japanese Patent JP6978029
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a lighting fixture, such as a road lamp, having a structure capable of preventing lighting of an illuminance sensor from being interrupted by a spiderweb formed on an outer surface of the lighting fixture, or snow or fallen leaves falling on the lighting fixture, and suitable for external light detection around the lighting fixture with the illuminance sensor.SOLUTION: A lighting fixture includes: an attachment part projecting at the rear of the lighting fixture; a light source for illumination configured to emit light toward a required place; an illuminance sensor configured to detect external light around the lighting fixture; and a control unit configured to control light emission of the light source for illumination, based on detection of the illuminance sensor. A light collection unit configured to collect the external light to the illuminance sensor faces the rear of the lighting fixture, and at least a part of the light collection unit is positioned above the attachment part, in a side view of the lighting fixture.SELECTED DRAWING: Figure 2
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Inventors:
Toru Inaba
Application Number:
JP2017020467A
Publication Date:
December 08, 2021
Filing Date:
February 07, 2017
Export Citation:
Assignee:
Kagatsu Co., Ltd.
International Classes:
F21S8/08; F21V23/00
Domestic Patent References:
| JP2014086248A | ||||
| JP2014143026A | ||||
| JP2016178011A | ||||
| JP2016024954A |
Attorney, Agent or Firm:
Teruo Akimoto
Daisuke Yoshizawa
Daisuke Yoshizawa
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