[Purpose] A light display method is capable of providing planar light displays of various types of characters with increased degrees of freedom, by using a plurality of point light sources and making light source units interchangeable on a point light source basis.[Constitution] In a light display method making light displays of various types of characters by employing a plurality of point light sources, each light display of the characters A, N, O, and S is made by dividing and segmenting the characters into at least one or more sets of light source units a1, n1, o1, o2, o3, s1, s2, and s3 including at least one of the point light sources, having a common structure in each character A, N, O, and S or a plurality of different characters, and making illumination by light emitted from the point light source as planar illumination light.