An organic electroluminescence (EL) light emitting device comprising: a transparent substrate ; a transparent electrode film formed on the substrate ; a positive electrode contact portion that is electrically connected to the transparent electrode film as a part of the transparent electrode film; a first insulating layer formed on the transparent electrode film such that a light emitting portion is opened; an auxiliary electrode formed on the transparent electrode film ; a second insulating layer formed on the auxiliary electrode ; an organic light emitting layer formed on the transparent electrode film and on the first and second insulating layers ; a negative electrode layer formed on the organic light emitting layer ; a negative electrode contact portion that is in contact with at least part of the negative electrode layer and that is electrically connected to the negative electrode layer ; and a protective layer that, in order to separate and electrically insulate the transparent electrode film and the positive electrode contact portion from the negative electrode contact portion , is formed therebetween, wherein the positive electrode contact portion and the negative electrode contact portion are electrically insulated by the first insulating layer or the protective layer ; and the transparent electrode film is formed without a gap across an area on the substrate including areas where the positive electrode contact portion , the first and second insulating layers , the organic light emitting layer , the negative electrode layer , the negative electrode contact portion and the protective layer are formed; characterised in that the positive electrode contact portion is provided on opposing side edge portions of the transparent electrode film , and in that the auxiliary electrode is formed of a metal material in a gridlike fashion and contacts the positive electrode contact portion on the opposing edge portions of the transparent electrode film. a transparent substrate ; a transparent electrode film formed on the substrate ; a positive electrode contact portion that is electrically connected to the transparent electrode film as a part of the transparent electrode film; a first insulating layer formed on the transparent electrode film such that a light emitting portion is opened; an auxiliary electrode formed on the transparent electrode film ; a second insulating layer formed on the auxiliary electrode ; an organic light emitting layer formed on the transparent electrode film and on the first and second insulating layers ; a negative electrode layer formed on the organic light emitting layer ; a negative electrode contact portion that is in contact with at least part of the negative electrode layer and that is electrically connected to the negative electrode layer ; and a protective layer that, in order to separate and electrically insulate the transparent electrode film and the positive electrode contact portion from the negative electrode contact portion , is formed therebetween, wherein the positive electrode contact portion and the negative electrode contact portion are electrically insulated by the first insulating layer or the protective layer ; and the transparent electrode film is formed without a gap across an area on the substrate including areas where the positive electrode contact portion , the first and second insulating layers , the organic light emitting layer , the negative electrode layer , the negative electrode contact portion and the protective layer are formed; characterised in that the positive electrode contact portion is provided on opposing side edge portions of the transparent electrode film , and in that the auxiliary electrode is formed of a metal material in a gridlike fashion and contacts the positive electrode contact portion on the opposing edge portions of the transparent electrode film. <EOS>