Title:
INDICATOR LIGHT
Document Type and Number:
WIPO Patent Application WO/2022/113339
Kind Code:
A1
Abstract:
An indicator light (1) includes a light source, a lens (4), and a cylindrical globe (5). The light source is disposed on an arrangement surface parallel to a central axial line (C1), and includes a pair of side LEDs (2B, 2C) and a central LED (2A) having an optical axis orthogonal to the arrangement surface. The lens has a central lens part (4A) and a pair of side lens parts (4B, 4C). The central lens part radiates light in a central radiation angle range (A1) centered about a central radiation basis line (L1) which is along a basis normal line (BN) of the arrangement surface. The pair of side lenses (2B, 2C) respectively radiate light in a pair of side radiation angle ranges (A2, A3) that respectively include a pair of side radiation basis lines (L2, L3) that are inclined in directions opposite to each other at an inclination angle of 60° with respect to the central radiation basis line (L1). The central lens part includes: a central light entry portion (32) having a central entry surface (31) through which light from the central LED enters; and a plurality of central light guiding portions (33) which diverge in a branch-like manner from the central light entry portion and extend toward the globe side. In each of the central light guiding portions, light which has refractively entered from an entry region corresponding to the central entry surface to a corresponding central emission surface is emitted refractively from the corresponding central emission surface to a corresponding region in the central radiation angle range.
More Like This:
Inventors:
NISHIMATSU KAZUYA (JP)
TOMIMOTO MASAO (JP)
TOMIMOTO MASAO (JP)
Application Number:
PCT/JP2020/044484
Publication Date:
June 02, 2022
Filing Date:
November 30, 2020
Export Citation:
Assignee:
PATLITE CORP (JP)
International Classes:
F21V5/00; F21V5/04
Domestic Patent References:
| WO2017022143A1 | 2017-02-09 | |||
| WO2017022143A1 | 2017-02-09 |
Foreign References:
| JP2012099243A | 2012-05-24 | |||
| JP2012209049A | 2012-10-25 |
Attorney, Agent or Firm:
AI ASSOCIATION OF PATENT AND TRADEMARK ATTORNEYS (JP)
Download PDF: