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1. (WO2017154810) LIGHTING DEVICE

Pub. No.:    WO/2017/154810    International Application No.:    PCT/JP2017/008677
Publication Date: Fri Sep 15 01:59:59 CEST 2017 International Filing Date: Tue Mar 07 00:59:59 CET 2017
IPC: F21V 15/01
F21S 2/00
Applicants: KOWA COMPANY, LTD.
興和株式会社
Inventors: TAKIMOTO Shigeru
瀧本 滋
Title: LIGHTING DEVICE
Abstract:
This lighting device 1 is provided with: a long frame member 2 which is formed from a first metal and is provided with a long light source part 5; a long cover member 3 which is formed from a resin and is fitted to the frame member 2 so as to cover the light source part 5; and a long base member 4 which is formed from a second metal that has a lower thermal expansion coefficient than the first metal, and which is fitted to the frame member 2 so as to face the cover member 3, with the frame member 2 being interposed therebetween. The frame member 2 is longer than the cover member 3; at least one of end portions of the frame member 2 is provided with a first space S1 that allows deformation of the cover member 3 due to thermal expansion; the base member 4 is longer than the frame member 2; and at least one of end portions of the base member 4 is provided with a second space S2 that allows deformation of the frame member 2 due to thermal expansion.