Title:
LIGHT SOURCE DRIVE DEVICE, ILLUMINATING DEVICE, AND CURRENT SETTING METHOD
Document Type and Number:
WIPO Patent Application WO/2019/106855
Kind Code:
A1
Abstract:
A light source drive device (100) is provided with: a first terminal (52), to which a light source can be connected, and a setting unit (90) for setting a current flowing to the light source can be also connected; a constant current drive circuit (10) that controls the current flowing to the light source so that the current is a constant current; a conversion circuit (30), which converts a voltage supplied from the setting unit (90) connected to the first terminal (52), and which outputs a voltage signal thus converted; and a control circuit (40), which sets the current value of the constant current on the basis of the voltage signal thus converted, and which outputs, to the constant current drive circuit (10), a setting signal indicating the current value thus set.
Inventors:
RYOHHEI TADA
Application Number:
PCT/JP2018/006910
Publication Date:
June 06, 2019
Filing Date:
February 26, 2018
Export Citation:
Assignee:
SHARP KK (JP)
International Classes:
H05B37/02
Foreign References:
| JP2015018780A | 2015-01-29 | |||
| US9161410B1 | 2015-10-13 |
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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