| 摘要 |
PROBLEM TO BE SOLVED: To provide an LED lamp for ship's light which uses one piece of light emitting element using an LED, has no spots in entire circumference in horizontal direction, and can make a spread in vertical direction within a defined range.SOLUTION: An LED lamp for ship's light is provided with a light-emitting element using an LED and a lens which transmits, refracts, and reflects light from the light-emitting element on the surface side of the light-emitting part of the light-emitting element. The lens has an incident surface of flat plane at a portion facing the light-emitting element and a reflecting surface recessed in a cone shape at the end face on the opposite side to the incident surface. The surrounding of the side part is made a ring-type convex lens part with a convex arc shape continuing to the circumference direction, and light from the light-emitting element entering from the incident surface is reflected by the reflecting surface and is irradiated from the emitting surface on the outer circumference of the ring-type convex lens by keeping the spread in the vertical direction within a prescribed range. |
