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1. WO2007140646 - PROJECTION SCREENS AND WINDING-UNWINDING MEANS USED FOR THE SAME

Publication Number WO/2007/140646
Publication Date 13.12.2007
International Application No. PCT/CN2006/001172
International Filing Date 31.05.2006
IPC
G03B 21/54 2006.01
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
21Projectors or projection-type viewers; Accessories therefor
54Accessories
G03B 21/56 2006.01
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
21Projectors or projection-type viewers; Accessories therefor
54Accessories
56Projection screens
CPC
G03B 21/54
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
21Projectors or projection-type viewers; Accessories therefor
54Accessories
G03B 21/58
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
21Projectors or projection-type viewers; Accessories therefor
54Accessories
56Projection screens
58collapsible, e.g. foldable; of variable area
Applicants
  • 陈焕杰 CHEN, Huan-chieh [CN]/[CN]
Inventors
  • 陈焕杰 CHEN, Huan-chieh
Agents
  • 北京申翔知识产权代理有限公司 SUNSHINE INTELLECTUAL PROPERTY AGENCY
Priority Data
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) PROJECTION SCREENS AND WINDING-UNWINDING MEANS USED FOR THE SAME
(FR) ÉCRAN DE PROJECTION ET MOYEN D'ENROULEMENT-DEROULEMENT UTILISÉ POUR CEUX-CI
(ZH) 投影机的投影布幕及其卷放装置
Abstract
(EN)
A winding-unwinding means used for projection screens (1) comprises a projection screens (1) fixed to a group of shaft (2) on one end and formed a knob (11) on the other end; a group of shaft (2) with the first end provided with a spring winding-unwinding member (22) having a beaded chain (23) and the second end provided with a decelerator (24) for cushioning the resilient force of the spring winding-unwinding member (22). The user can unwind the projection screens (1) by drawing the knob (11). The projection screens (1) is wound elastically and slowly by the effect of the spring winding-unwinding member (22) and the decelerator (24).
(FR)
La présente invention concerne un moyen d'enroulement-déroulement utilisé pour des écrans de projections (1) et comprenant un écran de projection (1) fixé à un groupe d'arbres (2) au niveau d'une extrémité et formant un bouton (11) à l'autre extrémité, ainsi qu'un groupe d'arbres (2) dont la première extrémité est pourvue d'un élément d'enroulement-déroulement à ressort (22) possédant une chaîne sertie (23) et dont la seconde extrémité est pourvue d'un ralentisseur (24) destiné à amortir la résilience de l'élément d'enroulement-déroulement à ressort (22). L'utilisateur peut dérouler l'écran de projection (1) en tirant le bouton (11). L'écran de projection (1) est enroulé élastiquement et lentement sous l'effet de l'élément d'enroulement-déroulement à ressort (22) et du ralentisseur (24).
(ZH)
本发明关于一种投影机的投影布幕及其卷放装置,主要包括一投影布幕,该投影布幕一侧固定于一轴杆组,且该投影布幕另一开放侧设有握持部;以及一轴杆组,轴杆组的第一端部固定设一弹性卷收机构,且该弹性卷收机构设一珠链卷拉器:且该轴杆组第二端部设一缓速器,以缓冲该弹性卷收机构的弹力;藉由该握持部形成可令使用者握持而手动拉下投影布幕,而该弹性卷收机构的弹性卷收作动对于轴杆组形成连动,以对于该投影布幕形成可弹性卷收,可以提供适合于普遍人士可以接受的所谓「半自动」而结构简易、经济实惠而省力的卷放装置。
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