Dynamic exit sign for displaying a route direction indication, comprising an illuminated display module for dynamically displaying an arrow in an arrow area of said illuminated display module, said arrow area comprises an assembly of adjacent surface light zones having square geometric shape and triangular geometric shape adapted to be activated independently in at least one and/or the other of two safety colors comprising white and green, said adjacent surface light zones of square and triangular geometric shape (111, 112) being arranged together to form a dynamical white arrow on a green background adapted to indicate the four cardinal directions depending on which surface light zones of said assembly are activated and in which color, said assembly of adjacent surface light zones (111, 112) comprises a printed circuit board of square global geometrical shape, a plurality of spacers projecting from said printed circuit board and forming a matrix of square and triangular compartments (17, 18), at least one punctual light source being fitted on said printed circuit board respectively in each of said square and triangular compartments (17, 18), so that the light emitted by said punctual light source can at least partially pass trough a semi-transparent projection layer disposed on the viewing side of each of said square and triangular compartments (17, 18) such that, on the viewing side, each compartment of the matrix thus illuminated forms a corresponding surface light zone, characterized in that said matrix is formed of 5 x 5 square compartments, comprising at least: - an undivided central square compartment, - first square compartments bordering each of sides of said central square compartment, said first square compartments being each divided in four triangular compartments by spacers extending along of their diagonals, - second square compartments adjacent to said central square compartment only by their respective corner, said second square compartments being each divided in two triangular compartments by a spacer extending along their diagonal opposite to the corner adjacent to said central square compartment, - third square compartments opposite to said central square compartment in view of each of said first square compartments, a triangular compartment being formed in each of said third square compartments by spacers extending along half the diagonal from each corner of said third compartments adjacent to said first compartments. - an undivided central square compartment, - first square compartments bordering each of sides of said central square compartment, said first square compartments being each divided in four triangular compartments by spacers extending along of their diagonals, - second square compartments adjacent to said central square compartment only by their respective corner, said second square compartments being each divided in two triangular compartments by a spacer extending along their diagonal opposite to the corner adjacent to said central square compartment, - third square compartments opposite to said central square compartment in view of each of said first square compartments, a triangular compartment being formed in each of said third square compartments by spacers extending along half the diagonal from each corner of said third compartments adjacent to said first compartments.