An information transmission device applied to an open moving machine driven by a driver who is exposed to an outside of the moving machine, the information transmission device comprising: a vibrator (9, 9A, 9B) configured to vibrate a component of the moving machine, the driver in a driving posture being in contact with the component; and a controller communicably connected to an information providing device and configured to control the vibrator (9, 9A, 9B) and a voice output device configured to output a voice to the driver, the information providing device being configured to provide utterance information to the driver as information to be transmitted to the driver, wherein: the controller makes the vibrator (9, 9A, 9B) operate when making the voice output device output the utterance information to the driver by the voice; the controller changes a vibration pattern of the vibrator (9, 9A, 9B) in accordance with a category of the utterance information provided from the information providing device, characterized in that the controller changes the vibration pattern of the vibrator (9, 9A, 9B) in accordance with whether the information to be transmitted to the driver is information indicating a state where the information transmission device is ready to receive utterance from the driver or information indicating a state where the information transmission device is about to output utterance to the driver. a vibrator (9, 9A, 9B) configured to vibrate a component of the moving machine, the driver in a driving posture being in contact with the component; and a controller communicably connected to an information providing device and configured to control the vibrator (9, 9A, 9B) and a voice output device configured to output a voice to the driver, the information providing device being configured to provide utterance information to the driver as information to be transmitted to the driver, wherein: the controller makes the vibrator (9, 9A, 9B) operate when making the voice output device output the utterance information to the driver by the voice; the controller changes a vibration pattern of the vibrator (9, 9A, 9B) in accordance with a category of the utterance information provided from the information providing device, characterized in that the controller changes the vibration pattern of the vibrator (9, 9A, 9B) in accordance with whether the information to be transmitted to the driver is information indicating a state where the information transmission device is ready to receive utterance from the driver or information indicating a state where the information transmission device is about to output utterance to the driver. the controller makes the vibrator (9, 9A, 9B) operate when making the voice output device output the utterance information to the driver by the voice; the controller changes a vibration pattern of the vibrator (9, 9A, 9B) in accordance with a category of the utterance information provided from the information providing device, characterized in that the controller changes the vibration pattern of the vibrator (9, 9A, 9B) in accordance with whether the information to be transmitted to the driver is information indicating a state where the information transmission device is ready to receive utterance from the driver or information indicating a state where the information transmission device is about to output utterance to the driver.