To enable easy fixing and positioning of a housing.
In a housing 1 which is constructed by fitting a housing cover 12 to a housing base 11, a base 11 side engaging part and a cover 12 side engaging part are provided respectively, and fixing and positioning of the housing base 11 and the housing cover 12 are performed according to engagement with each other. Accordingly, it is possible to provide the housing 1 which can be positioned correctly and easily, and can prevent light leakage through a gap between the housing base part 11 and the housing cover 12. It is also possible to provide a spot light source device which can operate only when the housing cover 12 is correctly installed by using an interlock releasing method at an interlock release part 35c that is linked with the fitting of the housing cover 12.
KAWAI KAZUTO
YOSHIDA KAZUO
OSAJIMA TETSUYA
