| 摘要 |
An illumination device is provided to suppress light projecting from a point-like light source to its front to the extent the light is not glaring when it is directly watched and to irradiate the light to a necessary area without waste while to diffuse the light from the point-like light source in a obliquely forward direction, a lateral direction, or the like. An illumination device is comprised of a light reflective plate (4), a wiring board (2), and a point-like light source (3), wherein a receiving concave portion (7) is formed by the light reflective plate or the light reflective plate and the wiring board, the point-like light source is received in the receiving concave portion, an incident angle of the light projected from the point-like light source is 0°, its brightness in the case of a distance of 350mm is not greater than 30,000cd/m 2 , and a part or all of the light projected from the point-like light source is reflected on an inner surface of a circumferential wall portion of the receiving concave portion, so that the reflected light is used for illumination. |
