LED MODULE AND ILLUMINATION DEVICE

• Main Authors: YAMAKAWA MASAHIKO, KONDO HIROYASU, ONO HIROSHI, KUNO KATSUMI, TSUDA RYOJI, KATO MITSUAKI
• Format: Patent
• Language: English; Japanese
• Published: 12.05.2016
• Subjects: BASIC ELECTRIC ELEMENTS; BLASTING; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-PORTABLE LIGHTING DEVICES; SEMICONDUCTOR DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS; WEAPONS

PROBLEM TO BE SOLVED: To provide an LED module which is emitted like a filament light source of an incandescent lamp.SOLUTION: An LED module includes: a visible light LED light source including a light emission plane which emits a visible light as an emission light; a visible light permeable axially symmetric transparent member which is provided while covering the LED light source; and an axially symmetric light scattering member which is disposed within the transparent member separately from the LED light source, and by which the visible light incident from the LED light source through the transparent member is scattered and emitted to the outside of the transparent member. The light scattering member is disposed in such a manner that a projection image to be projected in parallel towards the light emission plane is overlapped with at least a part of the light emission plane, and the emission light indicates continuous emission spectrum distribution in a wavelength region from 380 nm to 780 nm.SELECTED DRAWING: Figure 4 【課題】白熱電球のフィラメント光源のような光り方をするＬＥＤモジュールを提供する。【解決手段】ＬＥＤモジュールは、出射光として可視光を出射する光出射面を有する可視光ＬＥＤ光源と、ＬＥＤ光源を覆って設けられた可視光透過性軸対称透明部材と、ＬＥＤ光源から離間して透明部材の内部に配置され、ＬＥＤ光源から透明部材を通って入射した可視光を散乱させて透明部材の外部に出射する軸対称光散乱部材とを備える。光散乱部材は、光出射面に向けて平行投影されるその投影像が光出射面の少なくとも一部に重なるように配置され、出射光は、３８０ｎｍから７８０ｎｍの波長領域において、連続した発光スペクトル分布を示す。【選択図】 図４