A map information transmission device comprising: dividing means for dividing a region of a map into a plurality of sub regions based on superimposition positions at which a plurality of objects are to be displayed superimposed on the map, the dividing means being configured to perform the division such that a number of objects included in each of the sub regions is a predetermined number or lower; merged image generating means for generating, for each of the sub regions, a merged image that includes a plurality of objects included in the respective sub region, the plurality of objects being arranged in a two-dimensional plane in the merged image; and characterised by: display code generating means for generating, for each of the sub regions, display code that includes clipping information that, for each of the plurality of objects in the respective sub region, designates the position of a respective clipping region of the respective merged image that corresponds to the respective object, and superimpose destination information that, for each of the plurality of objects in the respective sub region, designates a respective region of the map onto which the respective clipping region of the respective merged image designated by the respective clipping information is to be superimposed as a clipped region of the merged image; and transmitting means for transmitting, to a map display device, the merged image and the display code that correspond to the sub region that includes a position in the map received from the map display device. dividing means for dividing a region of a map into a plurality of sub regions based on superimposition positions at which a plurality of objects are to be displayed superimposed on the map, the dividing means being configured to perform the division such that a number of objects included in each of the sub regions is a predetermined number or lower; merged image generating means for generating, for each of the sub regions, a merged image that includes a plurality of objects included in the respective sub region, the plurality of objects being arranged in a two-dimensional plane in the merged image; and characterised by: display code generating means for generating, for each of the sub regions, display code that includes clipping information that, for each of the plurality of objects in the respective sub region, designates the position of a respective clipping region of the respective merged image that corresponds to the respective object, and superimpose destination information that, for each of the plurality of objects in the respective sub region, designates a respective region of the map onto which the respective clipping region of the respective merged image designated by the respective clipping information is to be superimposed as a clipped region of the merged image; and transmitting means for transmitting, to a map display device, the merged image and the display code that correspond to the sub region that includes a position in the map received from the map display device. display code generating means for generating, for each of the sub regions, display code that includes clipping information that, for each of the plurality of objects in the respective sub region, designates the position of a respective clipping region of the respective merged image that corresponds to the respective object, and superimpose destination information that, for each of the plurality of objects in the respective sub region, designates a respective region of the map onto which the respective clipping region of the respective merged image designated by the respective clipping information is to be superimposed as a clipped region of the merged image; and clipping information that, for each of the plurality of objects in the respective sub region, designates the position of a respective clipping region of the respective merged image that corresponds to the respective object, and superimpose destination information that, for each of the plurality of objects in the respective sub region, designates a respective region of the map onto which the respective clipping region of the respective merged image designated by the respective clipping information is to be superimposed as a clipped region of the merged image; and transmitting means for transmitting, to a map display device, the merged image and the display code that correspond to the sub region that includes a position in the map received from the map display device.