| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem in which: in assembling a circuit board on a frame body, a sealing member held between the frame body and the circuit board becomes too hard, and the hardened sealing member gives a stress to the circuit board.SOLUTION: A sealing member 512 is in contact with a circuit board 501Y over the entire periphery of a first plane 514, and the sealing part 512 is pressed by a projection part 226 of an optical box 201 on a fourth plane 517, and thereby a flexible part 520 is deflected on a side of the circuit board 501 to fill a step of 0.3 mm.SELECTED DRAWING: Figure 11 |
