PURPOSE: To attain a remote control transmitter so as to handle a signal with a diversified angle by fitting a balance member to an infrared-ray emitting diode, making the balance member stable in a direction with a weight and providing an outer box protecting them and through which an infrared ray radiates.

CONSTITUTION: The angle is adjusted with a weight 6 in order to keep the transmission direction of an infrared-ray diode 3 in the horizontal direction with respect to a receiver side 4 and a reflecting plate 7 of prism structure or the like able to radiate an infrared-ray at a diversified angle is provided on the inner face of in outer box 2. Even when the outer box 2 is directed in any direction, the weight 6 is turned around a support 5 and directed always downward to allow a support rod 8 supporting the infrared-ray diode 3 to be directed on a line toward a reception section 4. Thus, a transmitter 10 able to cope with diversified angles is formed.