LIGHT-EMITTING MODULE, LIGHTING LAMP AND STREET LIGHT

• Main Author: SATO NORIFUMI
• Format: Patent
• Language: English; Japanese
• Published: 07.04.2016
• Subjects: BASIC ELECTRIC ELEMENTS; BLASTING; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF; HEATING; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATINGELEMENTS; LIGHTING; MECHANICAL ENGINEERING; NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; NON-PORTABLE LIGHTING DEVICES; SEMICONDUCTOR DEVICES; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS; WEAPONS

PROBLEM TO BE SOLVED: To solve a problem that a brightness just above LEDs becomes high and glaring may occur in the case of constitution of globe by transparent material as well as in the case of constitution of dispersed transparent material in view of a lighting lamp having a light-emitting part using LEDs and showing distribution of light expanding over an entire circumference and LEDs arranged oppositely against and near the inner surface of a globe (an outer tube valve) and light radiated from LEDs passing through the globe and showing outgoing radiation.SOLUTION: Adjoining substrates of a plurality of substrates having LEDs practically mounted are held to show a central angle less than 90 degrees, LEDs at the substrates are arranged at positions where light radiates toward a front plane of each of LEDs is shielded by the substrate arranged at a front side of the LEDs so as to reduce the maximum brightness while the light showing high brightness toward the front plane is not directly outputted to the outside of a lighting lamp and restrict its glaring.SELECTED DRAWING: Figure 1 【課題】 ＬＥＤを用いた発光部を有し、全周に広がる配光を有する照明ランプにおいて、ＬＥＤがグローブ（外管バルブ）の内面に対向し、近接して配置され、ＬＥＤから放射された光がグローブを透過して出射される。そのため、グローブが透明材料で構成されている場合は勿論のこと、拡散透過材料で構成されている場合においてもＬＥＤの直上の輝度が高くなり、グレアが生ずるおそれがある。【解決手段】 ＬＥＤを実装した複数の基板のうち、隣接する基板どうしが９０度未満の中心角をなすように保持されるとともに、前記基板におけるＬＥＤは、前記ＬＥＤから前記ＬＥＤの前方正面に出射される光が、前記ＬＥＤの前方に配置された基板によって遮られる位置に配置されることにより、輝度が高い前方正面への出射光が照明ランプの外部に直接的に出射されないようにして最大輝度を低減し、グレアを抑制する。【選択図】 図１