CN202487031U - Projection demonstrator - Google Patents

Projection demonstrator Download PDF

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Publication number
CN202487031U
CN202487031U CN2012200486209U CN201220048620U CN202487031U CN 202487031 U CN202487031 U CN 202487031U CN 2012200486209 U CN2012200486209 U CN 2012200486209U CN 201220048620 U CN201220048620 U CN 201220048620U CN 202487031 U CN202487031 U CN 202487031U
Authority
CN
China
Prior art keywords
projection
wood chip
parallel light
base
support
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.)
Expired - Fee Related
Application number
CN2012200486209U
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Chinese (zh)
Inventor
李祥军
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to CN2012200486209U priority Critical patent/CN202487031U/en
Application granted granted Critical
Publication of CN202487031U publication Critical patent/CN202487031U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model provides a projection demonstrator, and belongs to teaching aids. The projection demonstrator comprises a base, a parallel light source, a wood chip and a projection screen, wherein the base is a rectangular board, the parallel light source is located at the central position of a parallel light source support, the wood chip is fixed on a wood chip support through two clamps, the projection screen and the parallel light source support are respectively fixed on each side of the base, and the wood chip support is fixed at a middle portion of the base. A user utilizes the rotation of the wood chip of the projection demonstrator, observes changes of a shadow on the projection screen, and therefore can enable students to intuitively and clearly understand basic characters of an orthographic projection in an actual operation and easily comprehend the basic characters of the orthographic projection when the students learn.

Description

A kind of projection demonstration device
Technical field
The utility model relates to a kind of teaching equipment, specifically a kind of projection demonstration device.
Background technology
How much teachers are when explaining the fundamental characteristics of orthogonal projection for classmates; Explain according to the synoptic diagram of teaching material merely; Students understand gets up to have certain difficulty, need let the student understand more intuitively through practice by specific purpose tool; In the present teaching equipment, the special-purpose educational aid of also not explaining to the orthogonal projection characteristic.
The utility model content
The purpose of the utility model is to provide a kind of projection demonstration device, and this demonstration device can let the student intuitively clearly understand the fundamental characteristics of orthogonal projection through practical operation.
The technical scheme that its technical matters of the utility model solution is taked is: a kind of projection demonstration device; It is characterized in that; Comprise base, source of parallel light, wood chip and projection screen, described base is a rectangular slab, and source of parallel light is positioned at the center of source of parallel light support; Wood chip is fixed on the wood chip support through two clips, and described projection screen, source of parallel light support are individually fixed in the base two ends; The wood chip support is fixed in the base middle part.
The beneficial effect of the utility model is: the user observes the variation of shadow on the projection screen through the rotation of the wood chip of this projection demonstration device, in practical operation, can let the student intuitively clearly understand the fundamental characteristics of orthogonal projection, is more prone to during study understand.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Among the figure: 1 source of parallel light support, 2 wood chip supports, 3 projection screens, 4 wood chips, 5 clips, 6 sources of parallel light, 7 bases.
Embodiment
As shown in Figure 1.A kind of projection demonstration device; Comprise base 7, source of parallel light 6, wood chip 4 and projection screen 3; Described base 7 is a rectangular slab, and source of parallel light 6 is positioned at the center of source of parallel light support 1, and wood chip 4 is fixed on the wood chip support 2 through two clips 5; Wood chip 4 can rotate around wood chip support 2, and described projection screen 3, source of parallel light support 1 are individually fixed in base 7 two ends; Wood chip support 2 is fixed in base 7 middle parts.
When using this demonstration device, rotate wood chip 4, when parallel light that wood chip 4 and source of parallel light 6 are sent, on projection screen 3, obtain a line, demonstrate out the characteristic of concentration of orthogonal projection; When the light that sends when wood chip 4 and source of parallel light 6 is angled, on projection screen 3, obtain a projection of dwindling, demonstrate out the shrinkability of orthogonal projection; When the light that sends when wood chip 4 and source of parallel light 6 is vertical; On projection screen 3, obtain a projection onesize with wood chip; Can demonstrate out the authenticity of orthogonal projection; Classmates intuitively clearly understand the fundamental characteristics of orthogonal projection through observing the variation of shadow on the projection screen, are more prone to during study understand.

Claims (1)

1. projection demonstration device; It is characterized in that; Comprise base, source of parallel light, wood chip and projection screen, described base is a rectangular slab, and source of parallel light is positioned at the center of source of parallel light support; Wood chip is fixed on the wood chip support through two clips, and described projection screen, source of parallel light support are individually fixed in the base two ends; The wood chip support is fixed in the base middle part.
CN2012200486209U 2012-02-15 2012-02-15 Projection demonstrator Expired - Fee Related CN202487031U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012200486209U CN202487031U (en) 2012-02-15 2012-02-15 Projection demonstrator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012200486209U CN202487031U (en) 2012-02-15 2012-02-15 Projection demonstrator

Publications (1)

Publication Number Publication Date
CN202487031U true CN202487031U (en) 2012-10-10

Family

ID=46961436

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2012200486209U Expired - Fee Related CN202487031U (en) 2012-02-15 2012-02-15 Projection demonstrator

Country Status (1)

Country Link
CN (1) CN202487031U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105070153A (en) * 2015-07-31 2015-11-18 湖南科技大学 Multi-surface orthographic projection drawing geometry teaching instrument

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105070153A (en) * 2015-07-31 2015-11-18 湖南科技大学 Multi-surface orthographic projection drawing geometry teaching instrument
CN105070153B (en) * 2015-07-31 2017-10-27 湖南科技大学 A kind of multiaspect orthographic projection descriptive geometry teaching instrument

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20121010

Termination date: 20130215