Title:
SIGNAL LAMP
Document Type and Number:
WIPO Patent Application WO/2022/102394
Kind Code:
A1
Abstract:
This signal lamp is provided with: a display unit having a columnar shape; a first light emitting unit which is disposed in a portion, in the axial direction, of the display unit, and which emits first light from an outer peripheral surface; a first light guide path for guiding the first light; a first sensor for detecting the first light guided by the first light guide path; and a communication unit which is electrically connected to the first sensor to transmit information relating to the light emission by the first light emitting unit to the outside. The first light guide path includes: a first part including a first end surface facing the outer peripheral surface of the first light emitting unit; a second part which is connected to the first part and which extends in the axial direction; and a third part including a second end surface, which is the end surface on the opposite side to the first end surface. The first sensor is disposed in such a way as to face the second end surface. The first light guide path guides the first light incident from the first end surface to the second end surface. First light incident from a first side surface of the second part is transmitted to a second side surface that is farther from the first light emitting unit than the first side surface.
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Inventors:
OE MASANOBU (JP)
Application Number:
PCT/JP2021/039454
Publication Date:
May 19, 2022
Filing Date:
October 26, 2021
Export Citation:
Assignee:
SUMITOMO ELECTRIC INDUSTRIES (JP)
International Classes:
G01J1/02; G05B19/418; G05B23/02; G08B5/00
Foreign References:
| JP2019207543A | 2019-12-05 | |||
| JPH09145930A | 1997-06-06 | |||
| US20200178378A1 | 2020-06-04 | |||
| US20060066447A1 | 2006-03-30 |
Attorney, Agent or Firm:
MORITA Takeshi et al. (JP)
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