US Patent 12092833 Head-mounted display device

A head-mounted display device includes a body, a fan, a first valve, and a first shape memory alloy element. The body is configured to be worn on a face of a user. The body has an air channel, an air outlet, and a first air inlet. The first air inlet is communicated with the air outlet through the air channel. The fan is disposed in the air channel and is configured to drive air inside the air channel to flow. The first valve is disposed in the air channel. The first shape memory alloy element is connected between the first valve and the body, and is configured to move the first valve to adjust airflow inside the air channel.