公开(公告)号：US09983466B2

公开(公告)日：2018-05-29

申请号：US15454935

申请日：2017-03-09

Applicant: JVC KENWOOD Corporation

Inventor： Mitsuharu Fukuda

IPC: G03B21/16 ,  F21V29/60 ,  F21V29/76 ,  F28D15/02 ,  F28F1/32 ,  F28D15/00

CPC classification number: G03B21/16 ,  F21V29/60 ,  F21V29/76 ,  F28D15/00 ,  F28D15/0266 ,  F28D15/0275 ,  F28F1/325

Abstract: A cooling device includes a duct with one opened end and another opened end; a fan disposed inside the duct, the fan being configured to send air present inside the duct in an air-sending direction; a heat sink disposed outside the duct, the heat sink including a base part having an opposed surface opposed to a mouth of the another end of the duct, and heat-sink fins including a plurality of thin plates extending from the opposed surface along the air-sending direction; a heat source in contact with the base part; a heat pipe connected to the heat source or the heat sink; and heat-pipe fins disposed between the fan and the one end of the duct inside the duct, the heat-pipe fins including a plurality of thin plates extending from the heat pipe along the air-sending direction.

公开(公告)号：US10209608B2

公开(公告)日：2019-02-19

申请号：US15622432

申请日：2017-06-14

Applicant: JVC KENWOOD Corporation

Inventor： Toshiro Kohno ,  Mitsuharu Fukuda ,  Yoji Motomiya

IPC: G03B21/16 ,  G03B21/00 ,  G03B33/12

Abstract: A liquid crystal projector apparatus includes: a plurality of display elements configured to individually modulate light of color components different from one another; and a controller configured to control the individual temperatures of the plurality of display elements. When the temperature of the display element in which a temperature rise rate is slowest among the plurality of display elements does not reach a predetermined temperature, the controller controls so that the temperatures of other display elements stay within a predetermined range that takes as a reference the temperature of the display element in which the temperature rise rate is slowest.