公开(公告)号：US10738947B2

公开(公告)日：2020-08-11

申请号：US15328292

申请日：2015-07-31

Applicant: SONY CORPORATION

Inventor： Naoki Yotsumoto ,  Masashi Torimoto ,  Masaki Ohno ,  Takashi Sato

IPC: F21K9/237 ,  F21K9/66 ,  F21K9/232 ,  F21V3/02 ,  F21K9/61 ,  F21V33/00 ,  F21S2/00 ,  F21K9/69 ,  F21V29/70 ,  F21K9/238 ,  F21V3/00 ,  F21V17/12 ,  F21V8/00 ,  H04R1/02 ,  F21K9/68 ,  F21V7/04 ,  F21Y101/00 ,  F21Y103/33 ,  F21Y105/18 ,  F21Y115/10

Abstract: A bulb-type light source apparatus includes a light source and a light guide member. The light source is provided annularly. The light guide member includes an outer surface, a light-incident end surface opposing the light source, and an optical pattern portion configured to emit, from the outer surface, light that enters from the light-incident end surface.