Title:
LIGHT PROJECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/159530
Kind Code:
A1
Abstract:
According to the present invention, a light amount control mechanism (8) is provided with: a rotating body (9) disposed inside a casing (3) and supported on the casing (3) side so as to be capable of rotating around a cylinder shaft (3c) of the casing; a manipulation unit (10) attached to the rotating body (9) to allow the rotating body (9) to be rotatably manipulated from outside the casing (3); a variable resistor (11) that allows the amount of current applied to a light emitting diode to be increased and decreased; and a link mechanism (12) for linking the rotating body (9) and the variable resistor (11) so that a movable body of the variable resistor (11) is moved in a direction increasing the amount of current by a forward motion of the rotating body (9), and the movable body of the variable resistor (11) is moved in a direction decreasing the amount of current by a backward motion of the rotating body (9).
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Inventors:
MAEDA TAKEHIKO (JP)
Application Number:
PCT/JP2018/047045
Publication Date:
August 22, 2019
Filing Date:
December 20, 2018
Export Citation:
Assignee:
USHIO LIGHTING INC (JP)
International Classes:
F21S2/00; F21V23/00; F21V23/02; H05B37/02; F21Y115/10
Foreign References:
| JP2011086408A | 2011-04-28 | |||
| US20150155728A1 | 2015-06-04 | |||
| JP2010135095A | 2010-06-17 |
Attorney, Agent or Firm:
NAKAMURA, Nobuhiko (JP)
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