公开(公告)号：US20170009955A1

公开(公告)日：2017-01-12

申请号：US15114331

申请日：2015-01-29

Applicant: KOWA COMPANY, LTD.

Inventor： Suguru Mukumoto

IPC: F21V3/02 ,  F21V17/16 ,  F21V7/00 ,  F21V23/04 ,  F21S8/04 ,  F21V13/08 ,  F21V19/00 ,  F21K9/272 ,  F21V9/08

CPC classification number: F21V3/02 ,  F21K9/272 ,  F21S4/28 ,  F21S8/04 ,  F21V3/06 ,  F21V7/0008 ,  F21V9/08 ,  F21V13/02 ,  F21V13/08 ,  F21V17/166 ,  F21V19/003 ,  F21V23/04 ,  F21Y2105/10 ,  F21Y2115/10

Abstract: LEDs (21) that emit illumination light and a cover unit (30) that houses the LEDs are provided. The cover unit is composed of a front cover part (31) that transmits, diffuses and reflects the illumination light from the LEDs and a rear cover part (32) that reflects the illumination light reflected at the front cover part again toward the front cover part. The front cover part and the rear cover part are integrally molded without a gap and the loss of light fluxes is therefore eliminated. Moreover, the uniformity of luminance distribution of the light-emitting surface is improved to solve the problem in that the side surfaces of the lighting device and the attaching surface (ceiling surface) are dark.

Abstract translation: 提供发射照明光的LED（21）和容纳LED的盖单元（30）。 盖单元由将LED的照明光透射，扩散反射的前盖部（31）和将前盖反射的照明光再次朝向前盖部反射的后盖部（32）构成， 。 前盖部分和后盖部分一体地模制而没有间隙，因此消除了光通量的损失。 此外，提高了发光面的亮度分布的均匀性，以解决照明装置的侧面和安装面（天花板面）较暗的问题。