The present invention, there is provided a receiving space therein and the lower portion of the diffusion cover 11 is opened, the receiving space is provided inside the connecting portion 16 is coupled to the lower portion of the diffusion cover 11 is opened. ； A through-hole 22 formed at one lower portion of the support tube 20 positioned inside a coupling portion of the diffusion cover 11 and the connector 16； An insertion hole 31 formed on the central axis and inserted into the support tube 20； A terminal body provided with first and second terminals 41 and 45； Insertion hole 51 is formed in the upper portion, the open lower portion is fixed body 50 is coupled to the outer surface of the upper portion of the support tube 20； Light emitter 60 provided with LED elements 61 exposed through the insertion hole 51 of the fixture 50 and first and second lead lines 63 and 65 provided under the LED element 61. )； The upper portion of the inner surface is tightly coupled to the outer surface of the lower portion of the support tube 20 and the lower portion of the sealing member 70 protruding a predetermined length from the lower portion of the support tube 20； The upper part is in close contact with the lower end of the socket 30 and the lower part is the battery body 81 accommodated inside the connector 16, the positive pin 83 which is in contact with the other part of the second terminal 45, and the first part. The battery 80 is provided with a negative electrode groove 85 in contact with the other side of the terminal 41； It is provided on any one of the inner or outer surface of the diffusion cover 11, a diffuser for diffusing light generated by the light emitting unit； provides a light emitting for fishing bobber including a light diffusion function.본 발명은, 내부에는 수용공간이 마련되며 하측부위는 개구되는 확산커버(11), 내부에는 수용공간이 마련되며 개구되는 상측부위가 확산커버(11)의 하측부위와 결합되는 연결체(16)； 하부 일측부위에 관통공(22)이 형성되어 확산커버(11)와 연결체(16)의 결합부위 내부에 위치하는 지지관(20)； 중심축상에 삽입공(31)이 형성되어 지지관(20)에 삽입되는 소켓(30)； 제1, 2단자(41, 45
