| 摘要 |
PROBLEM TO BE SOLVED: To provide a radio wave remote controlled air conditioning device which can extend a remote controlled distance. SOLUTION: A slit (c), which resonates with a frequency lower than a resonance frequency of a receiver antenna (a), is provided on a metal board (b) which installs indoor equipment of an air conditioning device on a wall or the like. The slit (c) reflects received radio waves and collects the efficiency of the receiver antenna (a) on the front surface or the bottom of the indoor equipment. It is, therefore, possible to make the best use of the efficiency of the receiver antenna (a) and extend a remote controlled distance. In addition to that, it is possible to collect the efficiency of the receiver antenna (a) on the front surface or the bottom of the indoor equipment even when a conductor which resonates with a frequency higher than the resonance frequency of the receiver antenna (a) and the received radio waves are guided thereto. The slit (c) is attached to the conductor, which makes it possible to enhance the effect to a more satisfactory extent by reflection and wave guide. |
