INFRARED RAY TRANSMITTER, INFRARED RAY RECEIVER, AND AIR CONDITIONER USING INFRARED RAY TRANSMITTER AND INFRARED RAY RECEIVER

摘要

PROBLEM TO BE SOLVED: To provide an infrared ray transmitter and an infrared ray receiver which widen a range that an infrared ray signal can be received and transmitted without increasing an infrared ray transmitting element and an infrared ray receiving element, and to provide an air conditioner including the infrared ray transmitter and the infrared ray receiver.SOLUTION: An air conditioner is provided with a transmitting/receiving part 3 which transmits and receives an infrared ray signal and an infrared ray transmitting element 4 which transmits the infrared ray signal. The infrared ray signal is transmitted from the air conditioner 1 to a humidifier or the like to control the humidifier or the like. The air conditioner is provided with a penetration window 6 which transmits an infrared ray. A concave lens 7 is formed at the penetration window 6. The penetration window 6 diffuses the infrared ray 17 emitted from the infrared ray transmitting element 4 and spreads the infrared ray 17 in a sufficiently wide region. The structure widens a range that the humidifier or the like can be installed.