公开(公告)号：US20220171262A1

公开(公告)日：2022-06-02

申请号：US17518460

申请日：2021-11-03

Applicant: CASIO COMPUTER CO., LTD.

Inventor： Tomoyuki UEDA ,  Tetsuro NARIKAWA

IPC: G03B21/16 ,  G01K7/22 ,  G03B21/20

Abstract: A projector is configured to, in response to a temperature detection value acquired from one or more temperature detection sensors that detect a temperature of a light source unit reaching a set value, reduce a current ratio flowing through the light source unit; and in response to the reduced current ratio falling below a first set ratio, execute a first process.

公开(公告)号：US20180270456A1

公开(公告)日：2018-09-20

申请号：US15883402

申请日：2018-01-30

Applicant: CASIO COMPUTER CO., LTD.

Inventor： Tomoyuki UEDA

IPC: H04N9/31 ,  G03B21/16 ,  G03B21/20 ,  H04N5/74

CPC classification number: H04N9/3144 ,  G03B21/16 ,  G03B21/2013 ,  G03B21/206 ,  H04N5/7458

Abstract: A cooling device according to an embodiment of the invention includes an axial-flow fan and a heat sink having a fin assembly in which a recess portion is formed on a side thereof which faces the axial-flow fan to thereby provide a cooling device in which a space necessary for cooling is reduced, a light source unit including the cooling device and a projector including the light source unit.

公开(公告)号：US20230236485A1

公开(公告)日：2023-07-27

申请号：US18099629

申请日：2023-01-20

Applicant: CASIO COMPUTER CO., LTD.

Inventor： Yuta FUKAMI ,  Tomoyuki UEDA

IPC: G03B21/16 ,  G03B21/20 ,  H05K7/20

CPC classification number: G03B21/16 ,  G03B21/20 ,  H05K7/2039 ,  H05K7/20336

Abstract: A first cooling apparatus includes a first heat sink having multiple first fins having a U-shaped opening and an O-shaped opening which are provide therein, a first heat receiving member configured to be brought into abutment with a heat source, and a first heat pipe which extends from one end which is connected with the heat receiving member towards the other end, and the first heat pipe has a first extending portion which extends from the one end, a bent portion which is bent from the first extending portion and at least a part of which is disposed inside the U-shaped opening, and a second extending portion which extends from the bent portion and at least a part of which is disposed inside the O-shaped opening.

公开(公告)号：US20220171264A1

公开(公告)日：2022-06-02

申请号：US17539554

申请日：2021-12-01

Applicant: CASIO COMPUTER CO., LTD.

Inventor： Tomoyuki UEDA ,  Tetsuro NARIKAWA ,  Toshifumi KASE ,  Akira INOUE

IPC: G03B21/16

Abstract: A projector includes a cooling fan, and a processor, and the processor executes, in a case in which the cooling fan is operating in a first revolution speed mode, a control of switching an operation mode of the cooling fan to a second revolution speed mode whose revolution speed is faster than that of the first revolution speed mode in a case in which an obtained temperature detection value reaches a first threshold, and executes, in a case in which the cooling fan is operating in the second revolution speed mode, a control of switching the operation mode of the cooling fan to a revolution speed mode whose revolution speed is slower than that of the second revolution speed mode in a case in which an obtained temperature detection value decreases below a second threshold which differs from the first threshold.

公开(公告)号：US20230254460A1

公开(公告)日：2023-08-10

申请号：US18125040

申请日：2023-03-22

Applicant: CASIO COMPUTER CO., LTD.

Inventor： Kohei MIURA ,  Tomoyuki UEDA ,  Hirofumi FUJIKURA

IPC: H04N9/31 ,  G09G3/00

CPC classification number: H04N9/3164 ,  G09G3/001 ,  H04N9/3144

Abstract: A projector includes an optical apparatus, a control circuit board disposed above an upper side of the optical apparatus, a cooling fan disposed near a rear surface outside air inlet port in a case which lies opposite to a projection direction and having an upper surface outside air inlet port configured to let in outside air from an upper surface and a lower surface outside air inlet port configured to let in outside air from a lower surface of the case, and a heat sink provided corresponding to a discharge port of the cooling fan and connected with the optical apparatus, and a flow path resistance on a side facing the lower surface outside air inlet port is smaller than a flow path resistance on a side facing the upper surface outside air inlet port.

公开(公告)号：US20150252978A1

公开(公告)日：2015-09-10

申请号：US14636925

申请日：2015-03-03

Applicant: CASIO COMPUTER CO., LTD.

Inventor： Tomoyuki UEDA

IPC: F21V9/16 ,  G03B21/20 ,  F21V8/00 ,  F21K99/00 ,  F21V9/08

CPC classification number: G03B21/204 ,  F21K9/00 ,  F21V9/08 ,  G02B6/0003

Abstract: There is provided a light source unit which includes an excitation light source configured to emit light in a first wavelength range, a wavelength conversion member on which the light in the first wavelength range is incident from an incident side thereof and which is made up of a member formed to include a luminescent material mixed therein which emits light in a second wavelength range having its wavelength peak on a longer wavelength side than a wavelength peak of the light in the first wavelength range, and a first optical filter which is provided at an output side of the wavelength conversion member which lies opposite to the incident side and which transmits a light component of the light in the second wavelength range which has a wavelength shorter than a third wavelength lying in a wavelength range of the light in the second wavelength range.

Abstract translation: 提供了一种光源单元，其包括被配置为发射第一波长范围的光的激发光源，其中第一波长范围的光从其入射侧入射的波长转换构件，其由 其形成为包括混合在其中的发光材料，所述发光材料在比所述第一波长范围内的光的波长峰值更长的波长侧上发射具有波长峰值的第二波长范围的光，以及第一滤光器，其设置在输出端 所述波长转换部件与所述入射侧相对地设置，并且透射在所述第二波长范围内具有比所述第二波长范围内的光的波长范围内的第三波长短的波长的光的光分量。