WO2012026017A1 - 投写型表示装置のレンズカバー機構 - Google Patents

投写型表示装置のレンズカバー機構 Download PDF

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Publication number
WO2012026017A1
WO2012026017A1 PCT/JP2010/064475 JP2010064475W WO2012026017A1 WO 2012026017 A1 WO2012026017 A1 WO 2012026017A1 JP 2010064475 W JP2010064475 W JP 2010064475W WO 2012026017 A1 WO2012026017 A1 WO 2012026017A1
Authority
WO
WIPO (PCT)
Prior art keywords
lens cover
rail
housing
display device
lens
Prior art date
Application number
PCT/JP2010/064475
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
優一郎 奈良
Original Assignee
Ｎｅｃディスプレイソリューションズ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ｎｅｃディスプレイソリューションズ株式会社 filed Critical Ｎｅｃディスプレイソリューションズ株式会社
Priority to CN201090001552XU priority Critical patent/CN203054432U/zh
Priority to PCT/JP2010/064475 priority patent/WO2012026017A1/ja
Publication of WO2012026017A1 publication Critical patent/WO2012026017A1/ja

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS 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
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/145—Housing details, e.g. position adjustments thereof

Definitions

  • the present invention relates to a projection display device, and more particularly to a lens cover for protecting a projection lens.
  • a projection display device having a lens cover for protecting the projection lens is known.
  • the lens cover is roughly classified into a lens cover that is independent from the casing of the projection display device and a lens cover that is integrated with the casing.
  • the lens cover integrated with the housing is slidably attached to the housing, for example.
  • a lens cover is slidably attached to the front surface of the housing where the projection lens is provided.
  • a guide groove and a guide projection for holding the lens cover so as to be slidable are integrally formed on the casing.
  • the lens cover is held by the guide groove or the guide protrusion, and is movable between a first position that covers the projection lens and a second position that exposes the projection lens.
  • the lens cover When the projection display device is used, the lens cover is slid from the first position to the second position, and the projection lens is exposed. On the other hand, after using the projection display device, the lens cover is slid from the second position to the first position and returned to the original position.
  • JP-A-11-316416 (paragraphs 0016 and 0029, FIG. 16)
  • a groove and a protrusion for holding and guiding the lens cover are integrally formed on the casing. Therefore, the grooves and protrusions are not versatile, and the positions, shapes, and dimensions of the grooves and protrusions need to be specially designed for each housing. In addition, even when only the grooves and protrusions are damaged, it is necessary to replace the entire casing.
  • An object of the present invention is to provide versatility to the lens cover holding means and to allow the means to be exchanged.
  • the lens cover mechanism includes a guide component provided in a casing of the projection display device, a first position that covers the projection lens of the projection display device, and a second position that exposes the projection lens. And a lens cover held by the guide component, and the guide component is a separate component from the housing and is detachably fixed to the housing.
  • the lens cover holding means it is not necessary to design the lens cover holding means exclusively for each housing.
  • the lens cover holding means is damaged, only the damaged lens cover holding means can be replaced.
  • FIG. 1 is an external perspective view of a projection display device provided with a lens cover mechanism of the present invention. It is an enlarged view of the front of a housing. It is a disassembled perspective view which shows the inner side of a housing front surface. It is an enlarged view of an upper side guide component. It is an enlarged view of a lower side guide component. It is a perspective view which shows the arrangement
  • FIG. 1 is a perspective view of a projection display device including a lens cover mechanism according to the present embodiment.
  • the projection display device 1 shown in the figure has a housing 4 composed of a lower housing 2 and an upper housing 3. Although illustration is omitted, various components such as a power supply unit and an optical engine are accommodated in the housing 4.
  • a projection lens 5 is provided on the front surface of the housing 4.
  • an intake port 6 is formed on the side surface of the housing 4, and an exhaust port 7 is formed on the front surface.
  • a cooling fan is provided in the casing, and air is introduced from the intake port 6 and led out from the exhaust port 7 by the action of the cooling fan.
  • An operation panel 8 including a plurality of operation buttons is provided on the upper surface of the housing 4.
  • a concave space 10 set back toward the inside is formed on the front surface of the housing, and the projection lens 5 is formed from a substantially circular opening 9 (FIG. 2) formed in the space 10. Is exposed.
  • the lens cover 20 is disposed in the concave space 10 and can reciprocate between a first position and a second position.
  • the first position is a position where the lens cover 20 covers the projection lens 5.
  • the second position is a position shown in FIG. 1 and a position where the projection lens 5 is exposed. That is, when the illustrated lens cover 20 is slid in the direction of the arrow a, the lens cover 20 moves from the second position to the first position and covers the projection lens 5.
  • the lens cover 20 covering the projection lens 5 is slid in the direction of the arrow b, the lens cover 20 moves from the first position to the second position to expose the projection lens 5.
  • FIG. 2 is a partially enlarged view of the front surface of the housing to which the lens cover 20 is attached.
  • FIG. 3 is an exploded perspective view showing the inside of the front surface of the housing.
  • At least an upper guide part 30, a lower guide part 40, and a switch 50 are provided inside the front surface of the housing.
  • the upper guide part 30, the lower guide part 40, and the switch 50 are independent of each other. Further, the upper guide part 30, the lower guide part 40 and the switch 50 are fixed to the housing 4, but are separate parts from the housing 4. In other words, the upper guide part 30, the lower guide part 40, and the switch 50 can be attached / detached to / from the housing 4.
  • FIG. 4 is an enlarged view of the upper guide part 30, and FIGS. 5A and 5B are enlarged views of the lower guide part 40.
  • the upper guide component 30 includes a base portion 32 in which a through hole 31 into which a screw (not shown) for fixing the component 30 to the housing 4 (FIG. 3) is inserted is formed. And a first convex rail 33 extending upward from the portion 32.
  • the base portion 32 and the first convex rail 33 are integrally formed.
  • the lower guide component 40 includes a base portion 42 formed with a through hole 41 into which a screw (not shown) for fixing the component 40 to the housing 4 (FIG. 3) is inserted.
  • a second convex rail 43 extending downward from the base portion 42.
  • the base portion 42 and the second convex rail 43 are integrally formed.
  • the upper guide part 30 is attached to the inner upper part of the front surface of the housing
  • the lower guide part 40 is attached to the inner lower part of the front surface of the housing.
  • the first convex rail 33 of the upper guide part 30 protrudes into the concave space 10 on the front surface of the housing through a slit (not shown) provided on the front surface of the housing.
  • the 2nd convex rail 43 of the lower side guide component 40 protrudes in the recessed space 10 of a housing front surface through the slit (not shown) provided in the housing front surface.
  • two convex rails 33 and 43 are provided in parallel on the front surface of the housing (in the concave space 10).
  • FIG. 7 is an enlarged view of the rear surface of the lens cover.
  • a first concave rail 21 into which the first convex rail 33 (FIG. 4) of the upper guide component 30 is fitted is formed on the upper back surface of the lens cover 20.
  • a second concave rail 22 into which the second convex rail 43 (FIG. 5) of the lower guide component 40 is fitted is formed at the lower back of the lens cover 20.
  • the two concave rails 21 and 22 are integrally formed with the cover body. In short, two concave rails 21 and 22 are provided in parallel on the back surface of the lens cover 20.
  • FIG. 8 is a cross-sectional view of the lens cover.
  • the first concave rail 21 of the lens cover 20 is opened downward, and the first convex rail 33 (FIG. 3) of the upper guide part 30 is located below the first concave rail 21. Fit from.
  • the second concave rail 22 of the lens cover 20 is opened upward, and the second convex rail 43 (FIG. 5) of the lower guide component 40 is fitted to the second concave rail 22 from above. .
  • the lens cover 20 is slidably held in the direction of arrows ab in FIG. 1 by the combination of the convex rail and the concave rail as described above.
  • the upper guide part 30 and the lower guide part 40 can be attached to various cases other than the case 4 shown in the figure. Moreover, since the upper guide part 30 and the lower guide part 40 are fixed to the housing 4 with screws, they can be removed and replaced.
  • the second convex rail 43 of the lower guide component 40 is fitted to the second concave rail 22 of the lens cover 20.
  • the second convex rail 43 is inserted between the opposed inner surfaces of the second concave rail 22. Therefore, when the entire surface of the second convex rail 43 comes into contact with the inner side surface of the second concave rail 22, the contact resistance increases. Therefore, as shown in FIG. 5, two bulging portions 44 are formed on the surface of the second convex rail 43, and one bulging portion 45 is formed on the back surface. Only 45 contacts the inner surface of the second concave rail 22. Thereby, the contact resistance between the second convex rail 43 and the second concave rail 22 is reduced, and the lens cover 20 slides more smoothly.
  • a plurality of convex portions 23 are formed on the back surface of the lens cover 20, and only these convex portions 23 are in contact with the front surface of the housing. Specifically, two convex portions 23 are formed on the outer surface of the first concave rail 21, and two convex portions 23 are also formed on the outer surface of the second concave rail 22.
  • a plurality of concave portions are formed on the side wall of the lens cover, and a plurality of convex portions are formed on the front surface of the housing (in the concave space). These concave and convex portions are fitted to each other to prevent the lens cover from rattling. Specifically, the several concave portions and convex portions are fitted to each other when the lens cover is in the first position to prevent the lens cover from rattling. Some other recesses and projections fit together when the lens cover is in the second position to prevent rattling of the lens cover. More specific description will be given with reference to FIGS.
  • four recesses 24a to 24d are formed on the side wall of the lens cover 20.
  • four ribs 11a to 11d are formed in the concave space 10 on the front surface of the housing.
  • the rib 11a enters the recess 24a
  • the rib 11b enters the recess 24b.
  • the rib 11c enters the recess 24c
  • the rib 11d enters the recess 24d.
  • Such a combination of the recess and the rib prevents the lens cover 20 from rattling in the vertical direction when the lens cover 20 is in the first position or the second position.
  • a rib 12a is formed above the rib 11a
  • a rib 12b is formed above the rib 11c.
  • An assist mechanism 27 including a spring 25 and a stopper 26 is provided on the rear surface of the lens cover 20.
  • the assist mechanism 27 urges the lens cover 20 in the moving direction when the lens cover 20 slides. Further, when the lens cover 20 is in the first position, the lens cover 20 is urged so that the lens cover 20 remains in the first position. On the other hand, when the lens cover 20 is in the second position, the lens cover 20 is urged so that the lens cover 20 remains in the second position.
  • a switch operation unit 28 is formed on the back surface of the lens cover 20.
  • the switch operation unit 28 contacts the switch 50 provided on the housing side and presses the switch 50.
  • the switch 50 is pressed, the emission of light from the projection lens 5 stops.
  • the lens cover 20 is closed, the emission of light from the projection lens 5 automatically stops.
  • an aluminum tape 29 is attached to the back surface of the lens cover 20. The aluminum tape 29 is attached to a region facing the projection lens 5 when the lens cover 20 is in the first position.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Studio Devices (AREA)
  • Projection Apparatus (AREA)
PCT/JP2010/064475 2010-08-26 2010-08-26 投写型表示装置のレンズカバー機構 WO2012026017A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201090001552XU CN203054432U (zh) 2010-08-26 2010-08-26 投射型显示装置的镜头盖机构
PCT/JP2010/064475 WO2012026017A1 (ja) 2010-08-26 2010-08-26 投写型表示装置のレンズカバー機構

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2010/064475 WO2012026017A1 (ja) 2010-08-26 2010-08-26 投写型表示装置のレンズカバー機構

Publications (1)

Publication Number Publication Date
WO2012026017A1 true WO2012026017A1 (ja) 2012-03-01

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PCT/JP2010/064475 WO2012026017A1 (ja) 2010-08-26 2010-08-26 投写型表示装置のレンズカバー機構

Country Status (2)

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CN (1) CN203054432U (zh)
WO (1) WO2012026017A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104898212A (zh) * 2014-03-04 2015-09-09 日立金属株式会社 通信光检测适配器和通信光检测结构

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107577107B (zh) * 2016-07-05 2021-08-06 中兴通讯股份有限公司 一种投影机壳体结构及投影机

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0244729U (zh) * 1988-09-21 1990-03-28
JPH117058A (ja) * 1997-06-18 1999-01-12 Nikon Corp スライドカバー付きカメラ
JPH11142919A (ja) * 1997-11-07 1999-05-28 Nikon Corp スライドバリア付きカメラ
JP2003302670A (ja) * 2002-04-09 2003-10-24 Olympus Optical Co Ltd レンズバリア付きカメラ
JP2007240551A (ja) * 2006-03-03 2007-09-20 Seiko Epson Corp プロジェクタ
WO2007138859A1 (ja) * 2006-05-26 2007-12-06 Sanyo Electric Co., Ltd. 投写型映像表示装置
JP2008152191A (ja) * 2006-12-20 2008-07-03 Seiko Epson Corp プロジェクタ
JP2009128633A (ja) * 2007-11-22 2009-06-11 Fujifilm Corp 電子機器、バリア部材及び筐体

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0244729U (zh) * 1988-09-21 1990-03-28
JPH117058A (ja) * 1997-06-18 1999-01-12 Nikon Corp スライドカバー付きカメラ
JPH11142919A (ja) * 1997-11-07 1999-05-28 Nikon Corp スライドバリア付きカメラ
JP2003302670A (ja) * 2002-04-09 2003-10-24 Olympus Optical Co Ltd レンズバリア付きカメラ
JP2007240551A (ja) * 2006-03-03 2007-09-20 Seiko Epson Corp プロジェクタ
WO2007138859A1 (ja) * 2006-05-26 2007-12-06 Sanyo Electric Co., Ltd. 投写型映像表示装置
JP2008152191A (ja) * 2006-12-20 2008-07-03 Seiko Epson Corp プロジェクタ
JP2009128633A (ja) * 2007-11-22 2009-06-11 Fujifilm Corp 電子機器、バリア部材及び筐体

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104898212A (zh) * 2014-03-04 2015-09-09 日立金属株式会社 通信光检测适配器和通信光检测结构
JP2015166824A (ja) * 2014-03-04 2015-09-24 日立金属株式会社 通信光検知用アダプタ及び通信光検知構造
US9746368B2 (en) 2014-03-04 2017-08-29 Hitachi Metals, Ltd. Communication light detection adapter and light communication detection structure for checking an optical communication line
CN104898212B (zh) * 2014-03-04 2018-11-30 日立金属株式会社 通信光检测适配器和通信光检测结构

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