US 2022/0065433 A1Published application

Light source unit and light irradiation device

AssigneeUshio Denki Kabushiki Kaisha

InventorsTakeshi NAKATANI, Takafumi MIZOJIRI, Satoshi MURAKAMI

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Abstract

A light source unit includes a plurality of LED elements; an LED substrate that comprises a plurality of subdivided regions arrayed in a circumferential direction at least at an outwardmost locus as viewed from a direction perpendicular to the mounting surface; and cooling member(s) which are provided at surface(s) on a side opposite the mounting surface of the LED substrate and at which provided at each of the plurality of subdivided regions there are inlet port(s) for flow thereinto of cooling medium for cooling LED element(s), outlet port(s) that are for discharge of cooling medium and that are disposed more toward a center of the LED substrate than inlet port(s) as viewed from the direction perpendicular to the mounting surface of the LED substrate, and flow passage(s) which connect inlet port(s) and outlet port(s) and through interior(s) of which cooling medium flows.

Claims18

Dependent claims

A light source unit that causes a workpiece to be irradiated with light, the light source unit being characterized in that it comprises:

a plurality of LED elements;
an LED substrate that has a mounting surface on which the plurality of LED elements are mounted and that comprises a plurality of subdivided regions arrayed in a circumferential direction at least at an outwardmost locus as viewed from a direction perpendicular to the mounting surface;
and
a cooling member which is provided at a surface on a side opposite the mounting surface of the LED substrate and at which provided at each of the plurality of subdivided regions there are an inlet port for flow thereinto of cooling medium for cooling the LED elements, an outlet port that is for discharge of the cooling medium and that is disposed more toward a center of the LED substrate than the inlet port as viewed from the direction perpendicular to the mounting surface of the LED substrate, and a flow passage which connects the inlet port and the outlet port and through an interior of which the cooling medium flows.

1 more element

Dependencies are inferred from the claim text.