Organic electroluminescent lighting device

An organic electroluminescent lighting device comprising:

• an organic light-emitting film;
• a pair of electrode films that are stacked to face each other sandwiching the organic light-emitting element;
• wherein the pair of electrode films are formed rectangular and different from each other in polarity;
• wherein the pair of electrode films comprise power supply terminal sections which are connected to the power source;
• wherein power supply terminal sections are each of edge sides which face each other at a surface of one of the electrode films;
• and
• an auxiliary electrode film group including at least one of a plurality of first belt-like auxiliary electrode films and a plurality of second belt-like auxiliary electrode films;
• wherein the first auxiliary electrode films extend in a direction parallel to the edge sides and the second auxiliary electrode films extend in a direction perpendicular to the edge sides;
• wherein the first auxiliary electrode films and the second auxiliary electrode films are located away from each other on the surface of one of the electrode films,
• wherein a sectional area viewed at a section where the plurality of first auxiliary electrode films is cut in the direction perpendicular to the edge sides becomes larger in relation to increasing distance from the edge sides, and a sectional area viewed at a section where the plurality of second auxiliary electrode films is cut in the direction parallel to the edge sides becomes larger in relation to increasing distance from the edge sides.