Character string placement device

A character string placement device comprising:

• an evaluation function calculator that calculates an evaluation function value showing an evaluation to placement of a character string placed at each of a plurality of candidate points, wherein
• said evaluation function calculator includes:
• a character gap function calculator that calculates a character gap function value showing an evaluation to a character gap between a plurality of character strings which are respectively placed at said plurality of candidate points;
• a road angle function calculator that calculates a road angle function value showing an evaluation to an angle of a road node series along which the character string is placed at each of said plurality of candidate points;
• and
• an evaluation function value calculator that calculates said evaluation function value on a basis of said character gap function value and said road angle function value.