CROSS REFERENCE TO RELATED APPLICATIONS

The present application is based on and claims priority of Japanese Patent Application No. 2019-011020 filed on Jan. 25, 2019, Japanese Patent Application No. 2019-049091 filed on Mar. 15, 2019, and Japanese Patent Application No. 2019-144383 filed on Aug. 6, 2019.

FIELD

The present disclosure relates to a steering wheel heater that is wound around, for example, a steering wheel for vehicles.

BACKGROUND

Conventionally, a heater device that includes a base material made of a foamed urethane resin and a cord-shaped heater provided on the base material has been proposed (see, for example, Patent Literature 1 (PTL 1)). The heater device is provided in the rim of a steering wheel.

CITATION LIST

Patent Literatures

[PTL 1] Japanese Unexamined Patent Application Publication No. 2011-121477

[PTL 2] Japanese Unexamined Patent Application Publication No. 2017-216240

SUMMARY

The heater device disclosed in PTL 1 and the conductive heater disclosed in PTL 2 still have room for improvement.

Accordingly, the present disclosure provides a steering wheel heater capable of improving upon the above related art.

A steering wheel heater according to an aspect of the present disclosure includes: a base material that is wound around a steering wheel; a heater wire that generates heat by an electric current flowing through the heater wire; and a sewing thread that is used to sew the heater wire to one surface of the base material, wherein a plurality of through holes that have a diameter smaller than a sewing pitch of stitches of the sewing thread used to sew the heater wire are formed in the base material.

Generic or specific aspects of the present disclosure may be implemented by a system, a method, an integrated circuit, a computer program or a computer readable recording medium such as a CD-ROM, or may be implemented by any combination of a system, a method, an integrated circuit, a computer program and a recording medium. Also, the recording medium may be a non-transitory recording medium.

With the steering wheel heater according to the present disclosure, it is possible to improve upon the above related art.

