Title:
VENTILATION FAN
Document Type and Number:
Japanese Patent JP2023070403
Kind Code:
A
Abstract:
To provide a ventilation fan which can secure a region in which a large-sized circuit board larger than a conventional circuit board can be installed without expanding a portion of a body frame that does not contribute to improvement of ventilation performance.SOLUTION: A ventilation fan 1 comprises: a body frame 2 having a cylindrical wind tunnel part 21; a cylindrical motor holding part 3 arranged apart from the wind tunnel part 21 coaxially with a center axis of the wind tunnel part 21; support legs 4 extending toward the motor holding part 3 from the body frame 2 and supporting the motor holding part 3; a motor 5 at least partially arranged in the motor holding part 3 and fixed to the motor holding part 3; blades 6 attached to the motor 5 and generating an airflow while rotating in response to rotation of the motor 5; a motor cover 7 covering an opening of the motor holding part 3 that is oriented to a side opposite the wind tunnel part 21; a circuit board 8 arranged on a face of the motor cover 7 that is oriented to a side opposite the wind tunnel part 21; and a circuit cover 9 covering the circuit board 8.SELECTED DRAWING: Figure 2
Inventors:
MIURA MASAMI
Application Number:
JP2021182552A
Publication Date:
May 19, 2023
Filing Date:
November 09, 2021
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
F24F7/013; F04D29/64; F24F13/20; H02K7/14
Domestic Patent References:
| JP2019117025A | 2019-07-18 | |||
| JP2018161022A | 2018-10-11 | |||
| JPH0429738U | 1992-03-10 |
Attorney, Agent or Firm:
Jun Takamura