The present invention outside the position of the protruding portion of the insertion portion of the light-emitting light that is mounted to cut corn it can be known when viewed from the provision of the light-emitting lamps for cutting corn can be carried out quickly separating operation of the cut cone and the light emitting lamp by the shortest rotational movement. the top wall 11 of the A-cut cone 10, a circular through hole 12 and the cutout portion 13 is formed. A light emitting lamp 20 includes the insertion portion 21 of the hole portion 12 fittable into a cylindrical shape, it is formed by the exposure unit 22 is placed on the top wall 11. The exposed portion 22 and the insertion portion 21, the light emitting portion 21a, 22a, respectively. The side surface of the inserting portion 21 is formed capable of projecting portions 21b fitted in the cutout portion 13, the mark portion 22b is disposed on a side surface of the exposed portion 22 of the position corresponding to the position directly above the projecting portion 21b .BACKGROUND 2
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