Title:
灯具及び照明装置
Document Type and Number:
Japanese Patent JP6979771
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To suppress a temperature rise of an LED while obtaining brightness equivalent to 100 W and wide light distribution characteristics within a range of external dimensions specified as an A-type in JIS C8158.SOLUTION: A lighting fixture has a housing comprising an upper surface part, a lower surface part facing the upper surface part, a periphery formed so as to taper from a circumference of the upper surface part toward a circumference of the lower surface part, and a light source arrangement part being provided on the upper surface part and arranging a light source. Further, the lighting fixture has a cover covering the light source arrangement part and being provided on the housing. Still further, the lighting fixture has external dimensions smaller than external dimensions specified as an A-type in JIS C8158, and a surface area of the periphery of 4,646 square mm or more and of 6,350 square mm or less when power consumption is less than 13.5 W and is greater than 11.5 W.SELECTED DRAWING: Figure 16
Inventors:
Naoki Goto
high month effort
high month effort
Application Number:
JP2017029071A
Publication Date:
December 15, 2021
Filing Date:
February 20, 2017
Export Citation:
Assignee:
Mitsubishi Electric Corporation
Mitsubishi Electric Lighting Co., Ltd.
Mitsubishi Electric Lighting Co., Ltd.
International Classes:
F21K9/237; F21K9/00; F21V29/503; F21V29/70
Domestic Patent References:
| JP2013055034A | ||||
| JP2014179185A | ||||
| JP2017027838A | ||||
| JP2013251139A | ||||
| JP2014165034A | ||||
| JP2015537341A | ||||
| JP2013182776A |
Foreign References:
| US20160363269 |
Attorney, Agent or Firm:
Mizoi International Patent Service Corporation
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