Title:
UNDERWATER LIGHT-PROJECTING DEVICE AND CONTROL METHOD OF UNDERWATER LIGHT SOURCE POSTURE
Document Type and Number:
Japanese Patent JP2017191706
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a device, etc. for projecting a light to a light projecting object present underwater from underwater.SOLUTION: Buoyant force is applied to a foundation and a light source connected to the foundation by a buoyancy body, and in a state that the foundation is held on the water bottom, and the light source and the buoyancy body are held at a predetermined position underwater, a light is projected to the light projecting object. According to the present invention, a light can be sufficiently irradiated even onto a place that normally a light is less likely to reach. Further, the present invention can be applied even when the site is a sea route since it is not necessary to install an obstacle in the periphery on the water surface.SELECTED DRAWING: Figure 1
Inventors:
KATAHIRA TOMOHITO
HOAKI TOSHIHIRO
HOAKI TOSHIHIRO
Application Number:
JP2016080287A
Publication Date:
October 19, 2017
Filing Date:
April 13, 2016
Export Citation:
Assignee:
TAISEI CORP
International Classes:
F21S2/00; A01K79/00; F21S9/02
Attorney, Agent or Firm:
Sakuo Yamaguchi
Nobuyuki Oshima
Shinjiro Yamaguchi
Nobuyuki Oshima
Shinjiro Yamaguchi
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