Abstract: A light sign comprising an illuminant (1) provided with substantially parallel channels (2) for discharge tubes (3), at least one translucent sign panel as a support or holder for sign message and a frame (9) which peripherally defines the light sign. The object of the invention is to form a light sign specially intended to be used in such connections where a re-signing often occurs, e.g. on taxi-cabs and where the sign should be very narrow for having as little air resistance as possible, where re-signing should be done with a few manipulations of the sign and without weakening the frame construction of the sign. The light sign should further by simple means be connectible to attachment of different kinds, so that several light signs can be connected with each other forming a continuous unit, e.g., for providing screen walls for exhibition purposes.