JPH04223199A - Blackboard with screen - Google Patents

Blackboard with screen

Info

Publication number
JPH04223199A
JPH04223199A JP41827890A JP41827890A JPH04223199A JP H04223199 A JPH04223199 A JP H04223199A JP 41827890 A JP41827890 A JP 41827890A JP 41827890 A JP41827890 A JP 41827890A JP H04223199 A JPH04223199 A JP H04223199A
Authority
JP
Japan
Prior art keywords
blackboard
screen
screen curtain
crossbeam
curtain
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
JP41827890A
Other languages
Japanese (ja)
Other versions
JP2541379B2 (en
Inventor
Akira Asakura
Kenji Yokoo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kokuyo Co Ltd
Original Assignee
Kokuyo Co Ltd
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 Kokuyo Co Ltd filed Critical Kokuyo Co Ltd
Priority to JP2418278A priority Critical patent/JP2541379B2/en
Publication of JPH04223199A publication Critical patent/JPH04223199A/en
Application granted granted Critical
Publication of JP2541379B2 publication Critical patent/JP2541379B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PURPOSE: To enable a screen curtain to be so inclined forward as to be at right angle to the projecting direction of an image even in the case of projection of the image on the screen curtain from obliquely downward for a blackboard with a screen in which the screen curtain is drawably equipped to the front of the blackboard.
CONSTITUTION: A blackboard with screen in which a screen curtain 8 is drawably equipped onto the front of the blackboard body 11 releasably vertically, rotatably supported between fulcrums 3a, 3b is equipped, so that it can rise and fall freely, between a laid down position in parallel with a crossbeam 5 and a standing up position protruding rear obliquely upward, to one end part of the crossbeam connecting the fulcrums 3a, 3b. A blackboard supporting mechanism supporting in a required angle a forward inclined state of the blackboard body 11 at the standing up position and a screen engaged-detention mechanism 16 deterring respectively in a vertical state and in the forward inclined state, the screen curtain 8 to be drawn out in front of the blackboard body by attaching horizontally rotatably to a bottom surface of the crossbeam 5 or a powder receiver integrated therewith are provided to compose the title blackboard with screen.
COPYRIGHT: (C)1992,JPO&Japio
JP2418278A 1990-12-25 1990-12-25 Blackboard with screen Expired - Lifetime JP2541379B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2418278A JP2541379B2 (en) 1990-12-25 1990-12-25 Blackboard with screen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2418278A JP2541379B2 (en) 1990-12-25 1990-12-25 Blackboard with screen

Publications (2)

Publication Number Publication Date
JPH04223199A true JPH04223199A (en) 1992-08-13
JP2541379B2 JP2541379B2 (en) 1996-10-09

Family

ID=18526165

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2418278A Expired - Lifetime JP2541379B2 (en) 1990-12-25 1990-12-25 Blackboard with screen

Country Status (1)

Country Link
JP (1) JP2541379B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007021786A (en) * 2005-07-12 2007-02-01 Okamura Corp Stand board
CN108961863A (en) * 2018-07-19 2018-12-07 合肥职业技术学院 A kind of multimedia education system for science of financial management

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007021786A (en) * 2005-07-12 2007-02-01 Okamura Corp Stand board
JP4643382B2 (en) * 2005-07-12 2011-03-02 株式会社岡村製作所 Stand board
CN108961863A (en) * 2018-07-19 2018-12-07 合肥职业技术学院 A kind of multimedia education system for science of financial management
CN108961863B (en) * 2018-07-19 2020-07-14 合肥职业技术学院 Multimedia teaching system for financial management

Also Published As

Publication number Publication date
JP2541379B2 (en) 1996-10-09

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