Irisohyama Inc developed an electric fan that automatically adjusts the horizontal swing angle of its head by using a human presence sensor and released it April 30, 2014.
The fan does not swing its head too widely and can efficiently send a wind to an area where there is a human. The manufacturer's suggested retail price of the fan is ¥18,000 (approx US$176, excluding tax). Irisohyama aims to sell about 25,000 units in the first year.
The product name of the electric fan is "Human-sensing Oscillating Fan" (model number: LFDJ-301K). With an infrared sensor installed under the fan, it detects an area where there is a human. It swings its head with an angle range of about 85° (its widest angle) for about a minute while detecting the locations and movements of humans. Then, it begins to swing its head to send a wind only to an area where a human or humans exist. The sensitivity of the sensor can be set at three different levels.
When the automatic head swing function is in use, the sensor is always monitoring an area within an angle range of 90°. If it cannot detect any human in an area for about one minute, the electric fan stops sending a wind to the area. If it cannot detect any human in its detection range, it continues the previous operation.