| 摘要 |
<p>PURPOSE:To prevent display nonuniformity occurring and the light of light sources mixed by forming the thickness of a diffusion plate so as to be formed thinly as being separated from a first light emitting element, and providing a light reduction wall between a second light emitting element. CONSTITUTION:When the light from the first light emitting element 10 is reflected on a reflecting surface 11, the light reflected on a part separated from the first light emitting element arrives at the diffusion plate 5 tracing a longer route. Therefore, the more separated from the first light emitting element 10, the more the light arriving at the diffusion plate 5 is weakened. Meanwhile, the diffusion plate 5 is formed so that the more separated from the first light emitting element 10, the more thinly it is formed, and since the more thin the part, the more a transmission factor is low, the distribution of the light arriving at a character plate 7 can be uniformized. Also, since the upper side of the diffusion plate 5 is blocked from the second light emitting element 20 by the light reduction wall 14, the weak light of the first light emitting element 10 diffused by the diffusion plate 5 can be further weakened when it passes through the light reduction wall 14, which prevents the light mixed with the one emitted from the second light emitting element 20.</p> |
