PURPOSE: To confirm the flying position at night and easily confirm the grounding position by providing a light emission body illuminated by a lightweight battery serving as a power source mounted on the airframe of a helicopter toy so that luminescence can be observed from below.

CONSTITUTION: A battery 5 such as a lightweight lithium battery is stored in a battery storage body 6 and fitted to an airframe 3 at the rotary center section of a rotary wing 2, and a light emission body 7 such as a light emission diode illuminated by the battery 5 serving as a power source is fitted so that luminescence can be observed from below. When a helicopter toy 1 is to be flown at night, lead wires 7a, 7b of the light emission body 7 are inserted and connected to contacts 6d, 6f provided on the battery storage body 6 to illuminate the light emission body 7, or insertion contacts 9a, 9b of a plug 9 connected to the ends of the wires 8a, 8b connected to the light emission body 7 near a vertical tail wing are inserted and connected to the contacts 6d, 6f, and the light emission body 7 is illuminated for a flight.