Title:
INSPECTION HOLE
Document Type and Number:
Japanese Patent JP2015175198
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an inspection hole that makes a sheet material such as a light diffusion sheet hardly get wrinkles and that does not deteriorate beauty even when being affected by a tensile force of the sheet material.SOLUTION: An inspection hole 1 comprises: an outer frame 2 that is fixed to an opening H; an inner frame 3 that can be freely opened/closed in the outer frame 2; a light diffusion sheet 44 that is stretched inside the inner frame 3; and a holding member 45 for stretching the light diffusion sheet 44 inside the inner frame 3. The holding member 45 is formed like a frame. The inner frame 3 holds the holding member 45 where the light diffusion sheet 44 is stretched, and does not fix the holding member 45.
Inventors:
FUJIKAWA KATSUNOBU
ANADA YOSHIKO
HIRAOKA KAZUKI
KAWATO TAKASHI
ANADA YOSHIKO
HIRAOKA KAZUKI
KAWATO TAKASHI
Application Number:
JP2014054250A
Publication Date:
October 05, 2015
Filing Date:
March 18, 2014
Export Citation:
Assignee:
DAIKEN CO LTD
TAKIRON CO
TAKIRON CO
International Classes:
E04F19/08; E04F17/06
Domestic Patent References:
| JP2013136871A | 2013-07-11 | |||
| JP2011032721A | 2011-02-17 | |||
| JP2015067973A | 2015-04-13 | |||
| JP2010275747A | 2010-12-09 | |||
| JPS6142010U | 1986-03-18 | |||
| JP2011054493A | 2011-03-17 | |||
| JPS6077613U | 1985-05-30 |
Attorney, Agent or Firm:
Morimoto International Patent Office