On-vehicle sensor device

An on-vehicle sensor device to be mounted on a vehicle, the on-vehicle sensor device comprising:

• an ultrasonic sensor that includes a transceiver configured to perform at least one of reception or transmission of an ultrasonic wave;
• a sensor housing that houses at least a part of the ultrasonic sensor;
• and
• a sound vibration sensor that is configured to detect a sound or vibration in an audible range, wherein
• the sensor housing houses the sound vibration sensor in addition to the ultrasonic sensor,
• the ultrasonic sensor defines a hollow space facing a back surface of the transceiver,
• the sensor housing supports the ultrasonic sensor to allow displacement of the ultrasonic sensor due to the sound or vibration within the audible range,
• the sensor housing includes therein a compressing portion configured to compress the hollow space by the displacement of the ultrasonic sensor, and
• the sound vibration sensor uses the transceiver of the ultrasonic sensor as a transceiver for the sound vibration sensor.