Title:
交通機関用の表示灯装置
Document Type and Number:
Japanese Patent JP6673679
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an indicator lamp device for transportation which can secure high light intensity and a large lighting area of an indicator lamp and can reduce a depth dimension of the indicator lamp while improving workability of maintenance by using an optical fiber.SOLUTION: An indicator lamp device includes: an optical cable (30) having a plurality of incidence fiber bundles (31), a plurality of emission fiber bundles (33), and a cable part (32); a plurality of light emission elements arrayed on a substrate surface; a fiber holding body which holds end parts of the plurality of incidence fiber bundles in an array corresponding to an array of the plurality of light emission elements; and an indicator lamp arrayed so that end surfaces of the plurality light emission fiber bundles face to an indication direction. An optical fiber is a multicomponent glass fiber of which a wire diameter is 300 μm or less. The optical cable includes an array change part (32A) in which an array of the plurality of optical fibers is pseudo-randomly changed along a light guide direction.SELECTED DRAWING: Figure 2
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Inventors:
Takafumi Noguchi
Taku Ishii
Yuya Miyaji
Hiromi Watanabe
Toshikazu Inomata
Shotaro Sano
Toru Terashima
Taku Ishii
Yuya Miyaji
Hiromi Watanabe
Toshikazu Inomata
Shotaro Sano
Toru Terashima
Application Number:
JP2015237096A
Publication Date:
March 25, 2020
Filing Date:
December 04, 2015
Export Citation:
Assignee:
East Japan Railway Company
Sankosha Co., Ltd.
Sumita Optical Glass Co., Ltd.
Sankosha Co., Ltd.
Sumita Optical Glass Co., Ltd.
International Classes:
B61L29/28; E01F9/615; G02B6/04; G02B6/42; G09F13/00; H01L33/00
Domestic Patent References:
| JP5724696U | ||||
| JP7158020A | ||||
| JP2004354800A | ||||
| JP2000182420A | ||||
| JP200571870A |
Foreign References:
| US4039250 |
Attorney, Agent or Firm:
Gwangyang International Patent Office