公开(公告)号：US10338457B2

公开(公告)日：2019-07-02

申请号：US15498505

申请日：2017-04-27

Applicant: QISDA CORPORATION

Inventor： Hsien-Tsung Chiu ,  Ying-Fang Lin

IPC: G03B21/16 ,  G03B21/14

Abstract: An electronic device casing can be used in a projector and includes a first casing member and a second casing member. The first casing member includes a first side wall. The first casing member and the second casing member are engaged with each other to form an internal accommodating space. The second casing member includes a second side wall. The first side wall and the second side wall are oppositely disposed to form a narrow passage therebetween. The internal accommodating space is connected to an external space of the electronic device casing through the narrow passage. The narrow passage has a non-straight traveling path. Furthermore, the electronic device can includes an air flow bypass passage near the narrow passage.

公开(公告)号：US20180314139A1

公开(公告)日：2018-11-01

申请号：US15498505

申请日：2017-04-27

Applicant: QISDA CORPORATION

Inventor： Hsien-Tsung Chiu ,  Ying-Fang Lin

IPC: G03B21/16 ,  G03B21/20 ,  H05K5/02

CPC classification number: G03B21/16 ,  G03B21/145

Abstract: An electronic device casing can be used in a projector and includes a first casing member and a second casing member. The first casing member includes a first side wall. The first casing member and the second casing member are engaged with each other to form an internal accommodating space. The second casing member includes a second side wall. The first side wall and the second side wall are oppositely disposed to form a narrow passage therebetween. The internal accommodating space is connected to an external space of the electronic device casing through the narrow passage. The narrow passage has a non-straight traveling path. Furthermore, the electronic device can includes an air flow bypass passage near the narrow passage.

公开(公告)号：US09857670B2

公开(公告)日：2018-01-02

申请号：US15054109

申请日：2016-02-25

Applicant: Qisda Optronics (Suzhou) Co., Ltd. ,  Qisda Corporation

Inventor： Hsien-Tsung Chiu ,  Fang-Chieh Lu ,  Ying-Fang Lin

IPC: G03B21/14 ,  G03B21/00

CPC classification number: G03B21/145 ,  G03B21/00 ,  G03B21/14

Abstract: A power board and ballast module includes a housing, a power board, a ballast and an electrical connector. The power board is disposed in the housing. The ballast is disposed in the housing and electrically connected to the power board. The electrical connector is disposed in the housing and exposed out of the housing, wherein the power board and the ballast are electrically connected to the electrical connector respectively. Projectors using the power board and ballast module are also provided.