Title:
LIGHTING FIXTURE UNIT
Document Type and Number:
Japanese Patent JP2022034989
Kind Code:
A
Abstract:
To form a light distribution pattern for drawing with inexpensive constitution of a lighting fixture unit configured to emit light from a light source unit, which is transmitted through a rotary translucent plate, to the front of the unit through a projection lens.SOLUTION: A lighting fixture unit comprises, as a rotary translucent plate 20, a translucent plate body 22 which comprises six light transmission control parts 22a and an actuator 30 which rotates it. Then one of the six light transmission control parts 22a is arranged selectively at a light transmission control position so as to form a light distribution pattern for drawing with transmitted light from the light transmission control part 22a. In this case, the light transmission plate 22 is so constituted that effective light transmission regions 22Bb1 to 22Bb6 of the six light transmission control parts 22a are in mutually different shapes. Then the light transmission plate body 22 is rotated at intervals of 60° to form six kinds of light distribution patterns for drawing corresponding to shapes of the effective light transmission regions 22Bb1 to 22Bb6.SELECTED DRAWING: Figure 6
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Inventors:
SATO TAKAYOSHI
HONDA TAKAHIKO
HONDA TAKAHIKO
Application Number:
JP2020138982A
Publication Date:
March 04, 2022
Filing Date:
August 19, 2020
Export Citation:
Assignee:
KOITO MFG CO LTD
International Classes:
F21S43/27; F21S43/14; F21S43/20; F21V9/08; F21V9/40
Attorney, Agent or Firm:
Takashi Moriyama
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