Title:
TOILET SEAT DEVICE
Document Type and Number:
Japanese Patent JP2019000422
Kind Code:
A
Abstract:
To reduce the number of components and to save space.SOLUTION: A toilet seat device includes a detection circuit having a photocoupler connected in parallel with a predetermined switch out of a plurality of switches. A plurality of heaters are driven respectively by controlling each of the plurality of switches, and for at least part of the switches out of the remaining ones other than the predetermined switch out of the plurality of switches, control is performed based on a zero-cross point of the voltage of an AC power supply. Furthermore, when the predetermined heater corresponding to the predetermined switch out of the plurality of heaters is not driven, detection of presence/absence of disconnection of the predetermined heater and detection of a zero-cross point are performed based on the behavior of an output of the photocoupler.SELECTED DRAWING: Figure 2
Inventors:
FUJIYA KOJI
Application Number:
JP2017118383A
Publication Date:
January 10, 2019
Filing Date:
June 16, 2017
Export Citation:
Assignee:
AISIN SEIKI
International Classes:
A47K13/30; E03D9/08; F24H1/10; H05B3/00
Attorney, Agent or Firm:
Aitec International Patent Office