Abstract: A fog sensing apparatus for vehicle windows is provided. The fog sensing apparatus includes: a temperature/humidity sensor module including a glass surface temperature sensor for measuring a temperature of a glass surface of the vehicle window, and a humidity sensor for measuring relative humidity around the glass surface of the vehicle window; a flexible printed circuit board on which the temperature/humidity sensor module is mounted, which a temperature measurement part of the glass surface temperature sensor contacts, and on which a conductive pattern is formed to be connected to electrode terminals of the glass surface temperature sensor and electrode terminals of the humidity sensor; a substrate assembly having a through hole for the temperature/humidity sensor module to pass through, and connection terminals connected to the conductive pattern; and a case covering the substrate assembly, the substrate assembly interposed between the case and the flexible printed circuit board.

Abstract: A fog sensing apparatus for vehicle windows is provided. The fog sensing apparatus includes: a temperature/humidity sensor module including a glass surface temperature sensor for measuring a temperature of a glass surface of the vehicle window, and a humidity sensor for measuring relative humidity around the glass surface of the vehicle window; a flexible printed circuit board on which the temperature/humidity sensor module is mounted, which a temperature measurement part of the glass surface temperature sensor contacts, and on which a conductive pattern is formed to be connected to electrode terminals of the glass surface temperature sensor and electrode terminals of the humidity sensor; a substrate assembly having a through hole for the temperature/humidity sensor module to pass through, and connection terminals connected to the conductive pattern; and a case covering the substrate assembly, the substrate assembly interposed between the case and the flexible printed circuit board.