ILLUMINATING DEVICE AND LUMINAIRE

• Main Author: TAKEUCHI NOBUYOSHI
• Format: Patent
• Language: English; Japanese
• Published: 13.08.2020
• Subjects: BLASTING; FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-PORTABLE LIGHTING DEVICES; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS; WEAPONS

To provide an illuminating device that can control light distribution of illumination light by a relatively simple method.SOLUTION: An illuminating device 1 comprises a light source 2 and a light guide plate 3. The light guide plate 3 guides light L1 from the light source 2. The light guide plate 3 comprises an incident surface 35, a reflecting surface 36, and an emitting surface 37. The light L1 is incident on the incident surface 35. The reflecting surface 36 intersects with the incident surface 35, and reflects propagated light that is the light L1 incident on the incident surface 35, and propagated in the light guide plate 3. The emitting surface 37 is opposed to the reflecting surface 36, and emits the propagated light including reflected light reflected by the reflecting surface 36, to the outside of the light guide plate 3. The reflecting surface 36 comprises a bottom surface 361 and a convex part 362. The bottom surface 361 is opposed to the emitting surface 37. The convex part 362 protrudes from the bottom surface 361 in a direction away from the emitting surface 37.SELECTED DRAWING: Figure 1 【課題】比較的簡単な方法で照明光の配光を制御できる照明装置を提供する。【解決手段】照明装置１は、光源２と、導光板３と、を備える。導光板３は、光源２からの光Ｌ１を導光する。導光板３は、入射面３５と、反射面３６と、出射面３７と、を有する。入射面３５は、光Ｌ１を入射する。反射面３６は、入射面３５と交差しており、入射面３５に入射した光Ｌ１であって導光板３内を伝搬する伝搬光を反射する。出射面３７は、反射面３６と対向し、反射面３６で反射した反射光を含む伝搬光を導光板３の外に出射する。反射面３６は、底面３６１と、凸部３６２と、有する。底面３６１は、出射面３７に対向する。凸部３６２は、底面３６１から、出射面３７から離れる向きに突出する。【選択図】図１