| 摘要 |
PROBLEM TO BE SOLVED: To miniaturize a printed circuit board and a heat-radiating member by enhancing heat radiation effect of the heat-radiating member, and to enhance reliability and the life of a circuit component. SOLUTION: A heat-radiating member 12, protruding towards the inside of a printed circuit board 20, is disposed so as to turn it inward to the center point of a luminaire body 21, and a heat-radiating member 13 protruding towards the outside of the printed circuit board 20 is disposed so as to turn it outward to the center point of the luminaire body 21. Thereby, heat radiation effect by the heat-radiating members 12, 13 is improved. As a result, the heat- radiating member 13 can be miniaturized and reliability, and the service life of a circuit component can be improved without increasing the size of the printed circuit board 20. |
