US Patent No. 9,329,465

LIGHT SOURCE DEVICE AND PROJECTION-TYPE DISPLAY DEVICE INCLUDING FIRST AND SECOND LIGHT EMITTING ELEMENTS AND AIR FLOW DEVICE


Patent No. 9,329,465
Issue Date May 03, 2016
Title Light Source Device And Projection-type Display Device Including First And Second Light Emitting Elements And Air Flow Device
Inventorship Hiroko Chifu, Tokyo (JP)
Motoyasu Utsunomiya, Tokyo (JP)
Assignee NEC Display Solutions, Ltd., Tokyo (JP)

Claim of US Patent No. 9,329,465

1. A light source device comprising:
a first light emitting element;
a base plate thermally connected to the first light emitting element and having a flat surface formed around the first light
emitting element to face an emitting direction of light output from the first light emitting element;

an air flow device for sending out air;
an optical component disposed between the first light emitting element and the air flow device, the optical component configured
to act on the light emitted from the first light emitting element and to bend a direction of a part of the air sent out from
the air flow device;

a second light emitting element disposed on a downstream side of a bent direction of the air which is bent by the optical
component: and

a second base plate thermally connected to the second light emitting element and having a flat surface formed around the second
light emitting element to face an emitting direction of light output from the second light emitting element,

wherein the air flow device generates a flow of air toward the flat surface of the base plate in a direction perpendicular
to the flat surface; and the optical component reflects the light emitted from the first light emitting element, transmits
the light emitted from the second light emitting element, and synthesizes the light from the first light emitting element
and the light from the second light emitting element.