- Patent Title: Indication lighting device and vacuum cleaner including the same
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Application No.: US14885591Application Date: 2015-10-16
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Publication No.: US09946008B2Publication Date: 2018-04-17
- Inventor: Atsushi Fukui , Masaru Fujita , Tomohisa Sakaguchi
- Applicant: Panasonic Intellectual Property Management Co., Ltd.
- Applicant Address: JP Osaka
- Assignee: Panasonic Intellectual Property Management Co., Ltd.
- Current Assignee: Panasonic Intellectual Property Management Co., Ltd.
- Current Assignee Address: JP Osaka
- Agency: Panasonic IP Management
- Agent Kerry S. Culpepper
- Priority: JP2015-008193 20150120
- Main IPC: F21V8/00
- IPC: F21V8/00 ; F21V33/00 ; A47L9/28 ; A47L9/24 ; A47L9/30 ; A47L5/00

Abstract:
An indication lighting device provided is capable of reducing the number of electric wiring from a fixed, part to a moving part when an indication part is provided in the moving part's side. The indication lighting device makes indication by emitting light from a light source arranged in a fixed part to an optical waveguide arranged in a moving part, reflecting the light incident on the optical waveguide by reflection surfaces of prisms of the optical waveguide to an indication part provided in a tip side of the optical waveguide to be propagated, and emitting the light propagated inside the optical waveguide through the indication part.
Public/Granted literature
- US20160209575A1 INDICATION LIGHTING DEVICE AND VACUUM CLEANER INCLUDING THE SAME Public/Granted day:2016-07-21
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