Patent ID: 11935815
Assignee: UACJ CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 4:
5. The heat sink according to claim 4, wherein:
the plurality of fin plates comprises first fin plates and second fin plates stacked in an alternating manner;
the first fin plates each comprise:
first reference-surface parts;
first recessed parts recessed in a first direction of a stacking direction relative to the first reference-surface parts; and
first protruding parts, which protrude from the first reference-surface parts in a second direction, which is a direction opposite of the first direction; and

the first recessed parts and the first protruding parts are disposed in an alternating manner in a transverse direction and a longitudinal direction of the first fin plate;
the second fin plates each comprise:
second reference-surface parts;
second recessed parts recessed in the first direction relative to the second reference-surface parts; and
second protruding parts, which protrude from the second reference-surface parts in the second direction;

the second recessed parts and the second protruding parts are disposed in an alternating manner in the transverse direction and the longitudinal direction;
the first recessed parts respectively face the second protruding parts; and
the second recessed parts respectively face the first protruding parts.