OVERHEAT PREVENTION CIRCUIT OF PCB PLATE FOR THERMOTHERAPY DEVICE

WIPO Patent Application WO/2011/052860

A1

The present invention relates to an improved PCB plate circuit mounted in a thermotherapy device used for providing heat fomentation and hot massage effects. The PCB plate circuit according to the present invention comprises a main controller for detecting an overheat state of the PCB plate. The main controller includes two separate lines, i.e. a control signal line for transferring a normal control signal and a clock signal line for transferring a clock signal, and the control signal line and the clock signal line are connected to a safety controller. The safety controller comprises a multivibrator connected to the clock signal line, a multiline for transferring a signal that is generated by the multivibrator and an AND gate for conducting an AND operation on input signals from the multiline and the control signal line. Further, the safety controller is connected to a power supply that is turned on/off, under a control signal operated at the AND gate.

WO/2009/089995	RESIDUAL CURRENT DEVICE
WO/2000/013281	PROTECTION DEVICE FOR LOW VOLTAGE NETWORKS
JPS62155720	SIGNAL REGULATING CIRCUIT FOR ELECTRONIC TRIP CIRCUIT BREAKER

CHOI BYUNG-WON (KR)
YU JOON-WOO (KR)
PARK CHANG-SOO (KR)
KIM YONG-HEE (KR)
JEON JAE-YEON (KR)

PCT/KR2010/001908

May 05, 2011

March 30, 2010

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CERAGEM CO LTD (KR)
CHOI BYUNG-WON (KR)
YU JOON-WOO (KR)
PARK CHANG-SOO (KR)
KIM YONG-HEE (KR)
JEON JAE-YEON (KR)

H02H1/00; A61F7/08; A61H1/00

KR100555757B1	2006-03-03
KR100857208B1	2008-09-05
KR200426372Y1	2006-09-19
KR20020087720A	2002-11-23
KR20040054336A	2004-06-25
KR20090026455A	2009-03-13
KR20090048303A	2009-05-13
KR20090103236A	2009-10-01

YOON, Kyung-hyun (KR)
윤경현 (KR)

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