Mounting board, and led light source apparatus including the mounting board

PROBLEM TO BE SOLVED: To provide a mounting substrate improving the manufacturing yield and the mounting reliability of an LED light source device, and also to provide an LED light source device including the mounting substrate. SOLUTION: On a component mounting surface 11a of the mounting substrate 11, an inclination preventive structure 20 which is in a square shape in top-surface view is formed projectingly, and an LED chip 10 in an inverted quadranglar pyramid shape is fixed in a square-shaped opening portion 20a. Even if the LED chip 10 is inclined to a normal of the component mounting surface 11a, the inclination preventive structure 20 suppresses a larger inclination to suppress a decrease in light extraction efficiency of the LED chip 10, thereby improving the manufacturing yield and mounting reliability of the LED light source device constituted including the LED chip 10. COPYRIGHT: (C)2009,JPO&INPIT