Title:
PROJECTION APPARATUS
Document Type and Number:
WIPO Patent Application WO/2024/082479
Kind Code:
A1
Abstract:
A projection apparatus, which comprises: a housing (1), a light source assembly (2), and a projection lens (3); the projection apparatus has formed therein an accommodation space (SP), and the projection apparatus further comprises, located in the accommodation space (SP): a second mirror (MR2), a second fan (7), and a lens assembly (LNSG); the second mirror (MR2) is disposed on the light-emitting side of the light source assembly (2) and is used for reflecting into the lens assembly (LNSG) light emitted by the light source assembly (2), and the lens assembly (LNSG) is used for collimating the light; the accommodating space (SP) comprises an airflow space, and the airflow space comprises a first subspace (SP1) and a second subspace (SP2); the first subspace (SP1) is defined by the light source assembly (2), the second mirror (MR2), the lens assembly (LNSG) and part of the housing (1), and the second subspace (SP2) is located around the first subspace (SP1); and the second fan (7) is used for pushing internal air located in the airflow space to circulate, causing the internal air to circulate and flow between the first subspace (SP1) and the second subspace (SP2).
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Inventors:
LI XI (CN)
ZHANG WEI (CN)
WANG GUANGQUAN (CN)
WANG YUJIE (CN)
WANG JINGANG (CN)
CUI FENGYAN (CN)
HAN TIANYANG (CN)
LIU XIAOLONG (CN)
ZHANG WEI (CN)
WANG GUANGQUAN (CN)
WANG YUJIE (CN)
WANG JINGANG (CN)
CUI FENGYAN (CN)
HAN TIANYANG (CN)
LIU XIAOLONG (CN)
Application Number:
PCT/CN2023/073120
Publication Date:
April 25, 2024
Filing Date:
January 19, 2023
Export Citation:
Assignee:
BOE TECHNOLOGY GROUP CO LTD (CN)
BEIJING BOE DISPLAY TECH CO (CN)
BEIJING BOE DISPLAY TECH CO (CN)
International Classes:
G03B21/16; G03B21/20; H04N5/74
Foreign References:
| CN115128889A | 2022-09-30 | |||
| CN114911118A | 2022-08-16 | |||
| CN217443717U | 2022-09-16 | |||
| CN216351743U | 2022-04-19 | |||
| CN216927351U | 2022-07-08 | |||
| CN109643047A | 2019-04-16 | |||
| CN113687567A | 2021-11-23 | |||
| CN114019754A | 2022-02-08 | |||
| CN217506355U | 2022-09-27 | |||
| CN114721208A | 2022-07-08 | |||
| CN217484682U | 2022-09-23 | |||
| CN217404599U | 2022-09-09 | |||
| CN216561377U | 2022-05-17 | |||
| JP2013142783A | 2013-07-22 |
Attorney, Agent or Firm:
TEE & HOWE INTELLECTUAL PROPERTY ATTORNEYS et al. (CN)
Download PDF:
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