| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat sink capable of securing a corresponding surface area with a simple structure and efficiently radiating heat with light weight.SOLUTION: A heat sink 190 radiates heat generated from LEDs 170 mounted on a mounting surface 142 of a light source module 140, and includes a base member 120 which has a board adhesion surface 122 to be adhered to a mounting surface rear face 141, a fin member installation surface 121 which is a rear face of the board adhesion surface, and an inner wall face 124c forming an opening 124 penetrated from the board adhesion surface 122 to the fin member installation surface 121, and a fin member 110 which has a bottom plate 112 having a bottom plate surface 112a and a bottom plate rear face 112b and a pair of fins 111 formed at either end in a short-length direction of the bottom plate surface 112a. As for the fin member 110, the bottom plate rear face 112b is adhered to the mounting surface rear face 141 through the opening 124, and the pair of fins 111 are adhered to the inner wall face 124c. |
