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Patent Searching and Data


Title:
WIPER DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/208094
Kind Code:
A1
Abstract:
A wiper device (100) comprises: a power source supply circuit (56) that includes a plurality of switching elements, and that supplies to a wiper motor (18) a voltage which has been converted according to switching control of the plurality of switching elements; a temperature detection unit (RT) that detects a temperature associated with the temperature of at least one of the plurality of switching elements; a current detection unit (82) that detects a current flowing to one of the plurality of switching elements; and a control unit (58) that performs switching control of the switching elements so that the voltage supplied to the wiper motor decreases if the current detected by the current detection unit has exceeded a current limit at the temperature detected by the temperature detection unit.

Inventors:
NATSUME YOHEI (JP)
Application Number:
PCT/JP2019/013745
Publication Date:
October 31, 2019
Filing Date:
March 28, 2019
Export Citation:
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Assignee:
DENSO CORP (JP)
International Classes:
B60S1/08; H02P29/02
Foreign References:
JP2016007975A2016-01-18
JP2017017898A2017-01-19
JP2009044871A2009-02-26
Other References:
ANONYMOUS: "About thermal resistance ( non-official translation )", 11 September 2015 (2015-09-11), pages 1 - 10, XP055647000, Retrieved from the Internet [retrieved on 20190520]
Attorney, Agent or Firm:
TAIYO, NAKAJIMA & KATO (JP)
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