US 12,001,128 B2
Light source unit for projection type display apparatus
Ryo Tateishi, Tokyo (JP)
Assigned to SONY GROUP CORPORATION, Tokyo (JP)
Appl. No. 17/310,550
Filed by SONY GROUP CORPORATION, Tokyo (JP)
PCT Filed Jan. 27, 2020, PCT No. PCT/JP2020/002676
§ 371(c)(1), (2) Date Aug. 10, 2021,
PCT Pub. No. WO2020/170717, PCT Pub. Date Aug. 27, 2020.
Claims priority of application No. 2019-027480 (JP), filed on Feb. 19, 2019.
Prior Publication US 2022/0107555 A1, Apr. 7, 2022
Int. Cl. G03B 21/16 (2006.01); G09G 3/00 (2006.01); G09G 3/36 (2006.01); H05K 7/20 (2006.01)
CPC G03B 21/16 (2013.01) [G09G 3/002 (2013.01); G09G 3/36 (2013.01); H05K 7/20136 (2013.01); H05K 7/20336 (2013.01); H05K 7/2039 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A light source unit comprising:
a base member having one face and another face that face each other, and having a first region and a second region that are disposed side by side;
a first light-emitting element group disposed in the first region of the one face;
a second light-emitting element group disposed in the second region of the one face, and having substantially the same heat generation amount as the first light-emitting element group;
a first heat dissipation structure provided in the first region on an upstream side; and
a second heat dissipation structure provided in the second region on a downstream side, and having a heat dissipation characteristic equal to or greater than a heat dissipation characteristic of the first heat dissipation structure,
wherein each of the first heat dissipation structure and the second heat dissipation structure is configured by a plurality of fins disposed on the other face of the base member,
wherein a plurality of holes are provided on both the first heat dissipation structure and the second heat dissipation structure such that a density of the plurality of holes increases from the upstream side to the downstream side, and
wherein the plurality of fins structuring the second heat dissipation structure is disposed more densely than the plurality of fins structuring the first heat dissipation structure.