TEMPERATURE DETECTING DEVICE, FIXING DEVICE AND IMAGE FORMING APPARATUS

摘要

A contactless type temperature detecting device includes a temperature detecting sensor, a separating plate, an airflow path forming member, an air blower and an air hole. The temperature detecting sensor has a temperature detecting surface facing a heated body. The separating plate is configured to separate a first space on a side of the temperature detecting surface of the temperature detecting sensor from a second space on an opposite side of the temperature detecting surface. The airflow path forming member is provided on a surface of the separating plate on either one side of the first space or the second space. The air blower is configured to simultaneously form air flow in the first space and the second space. The air hole is provided along an outer circumference of the temperature detecting sensor and configured to communicate the first space with the second space.

主权项

1. A contactless type temperature detecting device configured to detect a temperature of a heated body without contacting, the contactless type temperature detecting device comprising:
a temperature detecting sensor having a temperature detecting surface facing the heated body; a separating plate configured to separate a first space on a side of the temperature detecting surface of the temperature detecting sensor from a second space on an opposite side of the temperature detecting surface; an airflow path forming member provided on a surface of the separating plate on either one side of the first space or the second space; an air blower configured to simultaneously form air flow in the first space and the second space; and an air hole provided along an outer circumference of the temperature detecting sensor and configured to communicate the first space with the second space, wherein the airflow path forming member is configured so that a length of the air flow formed in the first space is longer than that of the air flow formed in the second space.