LAMP DEVICE AND LIGHTING SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a lamp device in which increase in the quantity of material used and increase in mass can be suppressed, and thermal effect of a light-emitting module and a lighting circuit can be reduced mutually.

SOLUTION: The lamp device 14 includes a base body 17 having an installation wall part 25 and a side wall part 26 protruding to the other face side of the installation wall part 25 from the surroundings of the installation wall part 25. A light-emitting module 18 having a semiconductor light-emitting element is installed on one face of the base body 17. A base 20 is contacted and installed on the side wall part 26 of the base body 17.

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