Title:
LED DEVICE AND CONTROL METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2019/003498
Kind Code:
A1
Abstract:
The purpose of the present invention is to obtain an LED device capable of limiting the maximum current from a power source that supplies power to an LED element. This is achieved by an LED device comprising a load module unit having a plurality of LED elements connected in parallel and a plurality of load-switching elements connected in series to each of the plurality of LED elements, and a control unit for controlling the plurality of load-switching elements to turn on or off, wherein the control unit divides the on-period of at least one load-switching element among the plurality of load-switching elements into a plurality of on-periods in the control cycle, and sets on-periods so that at least one of the plurality of on-periods resulting from the division begins when a different load-switching element is timed to turn off.
Inventors:
SAKASHITA TOMOKAZU (JP)
ISHIGURO YOSHIAKI (JP)
WATANABE SHOTA (JP)
ISHIGURO YOSHIAKI (JP)
WATANABE SHOTA (JP)
Application Number:
PCT/JP2018/008359
Publication Date:
January 03, 2019
Filing Date:
March 05, 2018
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H05B37/02
Foreign References:
| JP2011138673A | 2011-07-14 |
Attorney, Agent or Firm:
MURAKAMI, Kanako et al. (JP)
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