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Patent Searching and Data


Title:
LIGHTING DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/138459
Kind Code:
A1
Abstract:
[Problem] To offset the direction of a lighting head to a front side directly lower side of the lighting head without adjusting the direction of the lighting head. [Solution] This lighting head (4) has a light source (5), a reflective plate (6), and a diffusion plate (7). The light source (5) is disposed to face the reflective plate (6) in an interior space which is defined by a curved surface shape of the reflective plate (6). An optical axis (A) of light output from the light source (5) faces a vertical direction in a state in which the lighting head (4) faces a directly lower side. The reflective plate (6) has a curved surface shape, which is asymmetrical with respect to the optical axis (A), and guides, in a specific direction, the reflected light obtained by reflecting emission light such that an irradiation area formed on an irradiation surface is offset to a specific direction with respect to the directly lower side of the lighting head (4) in a state in which the lighting head (4) faces the directly lower side. The diffusion plate (7) is mounted in an opening of the reflective plate (6), and diffuses the reflected light such that the light intensity of the irradiation area becomes uniform.

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Inventors:
JIKIHARA YUYA (JP)
TERAO GEN (JP)
Application Number:
JP2018/000266
Publication Date:
July 18, 2019
Filing Date:
January 10, 2018
Export Citation:
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Assignee:
BALMUDA INC (JP)
International Classes:
F21S6/00; F21V3/00; F21V7/06; F21V7/09; F21Y115/10
Foreign References:
JP2005108852A2005-04-21
JP2010073644A2010-04-02
JPS6376204A1988-04-06
Attorney, Agent or Firm:
KUMEGAWA Masamitsu (JP)
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