Title:
LED ILLUMINATION
Document Type and Number:
WIPO Patent Application WO/2012/070277
Kind Code:
A1
Abstract:
An LED illumination (1) comprises: an LED (10); two bases (21 and 22) respectively further comprising a first terminal and a second terminal; a power supply circuit (30) which supplies power to the LED (10); a switch (40) which switches whether to supply external power to the power supply circuit (30) via the bases (21 and 22); a control circuit (50) which controls the switch (40); and a current limiting circuit (60) which limits the current value which is supplied to the control circuit (50) via the bases (21 and 22) to be less than or equal to a reference current value. The control circuit (50) carries out: an adjudication process of adjudicating whether an open state or a short-circuit state exists between the first terminal and the second terminal of the bases (21 and 22) respectively; and a switching process of switching the switch (40) from the off state to the on state if it is adjudicated in the adjudication process that the short-circuit state exists between the first terminal and the second terminal of either base (21 or 22).
Inventors:
ONO YASUHIRO (JP)
MIYAJIMA TAKAHIRO (JP)
MIYAJIMA TAKAHIRO (JP)
Application Number:
PCT/JP2011/066411
Publication Date:
May 31, 2012
Filing Date:
July 20, 2011
Export Citation:
Assignee:
IRIS OHYAMA INC (JP)
ONO YASUHIRO (JP)
MIYAJIMA TAKAHIRO (JP)
ONO YASUHIRO (JP)
MIYAJIMA TAKAHIRO (JP)
International Classes:
H05B37/02; F21S2/00; F21Y101/02
Foreign References:
| JP2010140827A | 2010-06-24 | |||
| JP2009123506A | 2009-06-04 | |||
| JP2008277188A | 2008-11-13 |
Attorney, Agent or Firm:
FUSE, Yukio et al. (JP)
Yukio Fuse (JP)
Yukio Fuse (JP)
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Claims:
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