| 摘要 |
PROBLEM TO BE SOLVED: To provide a light source switch arrangement capable of speedily switching light sources for illumination without interrupting an operation and other activities. SOLUTION: This light source switch arrangement is composed of a light source housing 1 having two light sources 2, 2', a light source switch 3 and a screen plate 4. The light source housing 1 has a side plate (b) surrounding the light sources 2, 2' and a top plate (a), a long hole 5 for the light source switch 3 to slide is provided along a line connecting the centers of the two light sources 2, 2' in the center of the top plate (a). A hollow hole 6 to pass light from the light sources is formed in the light source switch 3. The screen plate 4 is rotatably installed on the lower surface of the top plate (a) of the light source housing 1 and rotates by interlocking with the leftward or right ward sliding movement of the light source switch 3, and when the light source switch 3 is slid to the left end or the right end of the long hole 5, the light from the light sources is passed through the hollow hole 6 of the light source switch 3, and the other region of the long hole 5 is shaded. |
