Title:
INDICATION LIGHT
Document Type and Number:
WIPO Patent Application WO/2021/038809
Kind Code:
A1
Abstract:
When viewed in parallel to a center axis line (C1), three LED substrates (4) constitute an equilateral triangle (T) that surrounds the center axis line (C1), and are placed equidistantly with respect to the center axis line (C1). When viewed in parallel to the center axis line (C1), in an external surface (4a) of each of the LED substrates (4), at least one LED (8) is placed at a pair of placement positions (Q1) at both sides flanking a basis normal (BN) that is a normal to the external surface (4a) and passes through the center axis line (C1). The LED (8) has a light axis (8a) orthogonal to the external surface (4a). Viewed parallel to the center axis line (C1), light radiated from the LEDs (8) at the pair of placement positions (Q1) of each of the LED substrates (4) is converted via an optical system (K) to, and radiated as, radiated parallel light (RPL) in parallel respectively to a pair of radiation basis lines (RB) that pass through the center axis line (C1) on both sides flanking the basis normal (BN), the radiated parallel light (RPL) respectively including the corresponding radiation basis lines (RB).
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Inventors:
TOMIMOTO MASAO (JP)
Application Number:
PCT/JP2019/034004
Publication Date:
March 04, 2021
Filing Date:
August 29, 2019
Export Citation:
Assignee:
PATLITE CORP (JP)
International Classes:
F21S2/00; F21Y115/10
Domestic Patent References:
| WO2017022143A1 | 2017-02-09 |
Foreign References:
| JP2012099243A | 2012-05-24 | |||
| JP2015103511A | 2015-06-04 | |||
| JP2001167610A | 2001-06-22 | |||
| JP2007165057A | 2007-06-28 |
Other References:
See also references of EP 3832193A4
Attorney, Agent or Firm:
AI ASSOCIATION OF PATENT AND TRADEMARK ATTORNEYS (JP)
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