CN206480172U - A kind of English teaching projecting apparatus - Google Patents
A kind of English teaching projecting apparatus Download PDFInfo
- Publication number
- CN206480172U CN206480172U CN201720131674.4U CN201720131674U CN206480172U CN 206480172 U CN206480172 U CN 206480172U CN 201720131674 U CN201720131674 U CN 201720131674U CN 206480172 U CN206480172 U CN 206480172U
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- CN
- China
- Prior art keywords
- installation cavity
- fixed
- cavity
- dividing plate
- projecting apparatus
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Abstract
The utility model discloses a kind of English teaching projecting apparatus, include pedestal, placement platform has been laid on the top surface of pedestal, placement platform holds thing glass by one layer of Fresnel Lenses and one layer and is made, base interior is hollow to form installation cavity, light source is provided with installation cavity, transformer and fan, the light source includes bromine tungsten filament lamp, spherical reflector and condenser, the spherical reflector and the condenser are located at the underface and surface of the bromine tungsten filament lamp respectively, and downward concave surface is formd on the spherical reflector, upward convex surface is formd on the condenser；The transformer is fixed on the bottom of the installation cavity by a damper bar, dividing plate is further fixed in the bottom of installation cavity, described dividing plate one end is fixed on the bottom of the installation cavity, the other end is fixed on the side wall of the installation cavity, and one piece of square cavity is separated out in the installation cavity, the fan is arranged in the cavity, and some air vents have been shaped on the dividing plate.
Description
Technical field：
The utility model is related to English teaching equipment technical field, has been specifically related to a kind of English teaching projecting apparatus.
Background technology
In existing process of English teaching, it is often necessary to using being amplified to word, picture etc. on screen to projecting apparatus,
It is easy to students ' reading, teacher's explanation, but traditional projecting apparatus, many electronic components, these electronics is provided with because it is internal
Vibration can be produced on component in the course of work, causes the light source inside projection to resonate therewith, so that trembling due to light source
The decline for causing overall image quality is moved, in addition, being to open up air vent on the side wall of projecting apparatus, so in existing projecting apparatus
The inside of reprojection instrument sets fan afterwards, promotes inner air and outer air to circulate by fan, but fan faces light source and blown,
The shake of light source can be caused, air vent is directly opened up on the side wall of projecting apparatus in addition, easily allows dust to enter projecting apparatus
Inside, is polluted.
Utility model content：
The purpose of this utility model is to provide for a kind of English that can be lifted image image quality and ensure cooling effect
Educational projector.
The purpose is achieved by the following scheme,
A kind of English teaching projecting apparatus, includes pedestal, the pedestal is a square casing, in the top surface of the pedestal
On laid the placement platform of one piece of level, the placement platform holds thing glass by one layer of Fresnel Lenses and one layer and is made, institute
State Fresnel Lenses and be laid on the lower section for holding thing glass, the base interior is hollow to form installation cavity, installed described
Light source, transformer and fan are provided with chamber, the light source includes bromine tungsten filament lamp, spherical reflector and condenser, the sphere
Reflective mirror and the condenser are located at the underface and surface of the bromine tungsten filament lamp, and the shape on the spherical reflector respectively
Into downward concave surface, upward convex surface is formd on the condenser, the transformer is fixed on institute by a damper bar
The bottom of installation cavity is stated, dividing plate is further fixed in the bottom of installation cavity, described dividing plate one end is fixed on the bottom of the installation cavity,
The other end is fixed on the side wall of the installation cavity, and is separated out in the installation cavity one piece of square cavity, and the fan is set
Put in the cavity, the dividing plate is made up of spring steel, some air vents have been shaped on the dividing plate.
It is used as the bottom of the present utility model for being preferably fixed on the transformer at the top of the damper bar by spring shim
Portion, the bottom of the damper bar is fixed on the bottom of the installation cavity by spring shim.
Improved as of the present utility model, in the fixed vertical elevating lever in the side for holding thing glass, in the liter
Be slidably connected elevator on drop bar, has worn rotating shaft on the elevator, swing arm, the pendulum are arranged in the rotating shaft
Arm, in the fixed tripod in the end of the swing arm, camera lens can be embedded in the bottom of the tripod around the axis of rotation,
The tripod the fixed reflective mirror in top and be formed with angle between the reflective mirror and the tripod.
As further improvement of the utility model, the rectangular triangle in section of the tripod, its bottom is a water
Plane, top is an inclined-plane.
As concrete technical scheme of the present utility model, the cavity is formd out on a surface side wall of the pedestal
Mouthful.
Compared with prior art, the utility model has the advantage of：On the one hand, by setting damper bar, transformation is eliminated
The vibration that device is produced when working causes the resonance of whole pedestal, and then causes the resonance of light source, causes rocking for formed image, separately
On the one hand, air vent has been opened up by being provided between fan and light source on one piece of dividing plate being made up of spring steel, dividing plate, this
Plant air vent and ensure that radiating effect, in addition, the slight wind-force that fan blowing is caused can cause spring steel to occur in natural resiliency
Within the scope of low amplitude vibrations, but its most blowing obstructs by spring steel diaphragm again, therefore will not directly contribute bromine tungsten filament lamp
Rock, so as to also improve image image quality.In addition, opened up on dividing plate air vent rather than on the side wall of pedestal directly
Air vent is opened up, and fan uses induced draught fan, thus it can be prevented that dust to enter inside projecting apparatus and pollutes.
Brief description of the drawings：
Fig. 1 is the structural representation of the utility model embodiment English educational projector；
Fig. 2 is Fig. 1 optical projection schematic diagram.
Embodiment：
The utility model is elaborated below in conjunction with the accompanying drawings preferred embodiment.
The utility model provides a kind of English teaching projecting apparatus, includes pedestal 1, and the pedestal is the side of an inner hollow
Shape casing, its inner hollow forms an installation cavity, and the bottom of installation cavity is the bottom plate of square box, and installation cavity is in square box
Opening is formd on the top surface of body, lid has set the placement platform of one piece of level in opening, and the placement platform is by one layer of Fresnel
Lens 2 and one layer hold thing glass 3 and are made, and Fresnel Lenses is laid on the lower section for holding thing glass, can be put on thing glass holding
Transparency 4, in the fixed vertical elevating lever 5 in side for holding thing glass, be slidably connected elevator 51 on elevating lever, the liter
Dropping block can be slided under the driving of electric power on elevating lever, and rotating shaft 511 has been worn on elevator, has been arranged and puts in rotating shaft
Arm 52, the swing arm can be rotated around the axis, and in the fixed tripod 6 in the end of swing arm, camera lens 61 has been embedded in the bottom of tripod,
Fixed reflective mirror 62 and angle is formed with the top of the tripod between the reflective mirror and the tripod.Specifically
, the rectangular triangle in section of tripod, two right-angle sides of right angled triangle correspond to the bottom and side of tripod respectively
Portion, therefore its bottom of tripod is a horizontal plane, and its top correspond to the hypotenuse of right angled triangle, therefore be an inclined-plane.Reflective mirror
An acute angle is formd between inclined-plane, whole tripod position is in the surface for holding thing glass.
Light source 7, transformer 8 and fan 9 are provided with the installation cavity, the light source includes bromine tungsten filament lamp 71, sphere
Reflective mirror 72 and condenser 73, spherical reflector and the condenser are located at the underface and surface of bromine tungsten filament lamp respectively, and
Downward concave surface is formd on spherical reflector, upward convex surface is formd on condenser, transformer passes through a damper bar
81 (damper bar is conventional damping rod purchased in market) are fixed on the bottom of the installation cavity, and spring shim 82 is passed through at the top of the damper bar
The bottom of transformer is fixed on, the bottom of damper bar is fixed on the bottom of installation cavity by spring shim.When transformer works,
Vibration can be produced, the influence to pedestal can be vibrated by the obvious eliminating transformer of the damper bar, it is to avoid light source etc. produces resonance, makes
Into the shake of image.
Dividing plate 10 is further fixed in the bottom of installation cavity, dividing plate one end is fixed on the bottom of installation cavity, and the other end is fixed on
On the side wall of installation cavity, and be separated out in installation cavity one piece of square cavity, fan is arranged in the cavity, the dividing plate by
Spring steel is made, and some air vent (not shown)s have been shaped on the dividing plate.Pedestal is arranged on compared to by air vent
Side wall on, be arranged on and be advantageous in that dividing plate is the bottom positioned at installation cavity on dividing plate, therefore dust etc. is not easy from lower to upper
Enter inside installation cavity, and fan in the present embodiment is preferably by the fan of that air draught type, can be by interior
Outside suctions out the air inside installation cavity, while ensure that air circulation, also largely prevent dust
Enter in installation cavity.In addition, cavity forms opening on a surface side wall of the pedestal, the opening is easy to dismount in fan
Into cavity.
It is described above to make preferred embodiment of the present utility model, do not depart from for the person of ordinary skill of the art
On the premise of the utility model principle, some variations and modifications can also be made, these also should be regarded as protection of the present utility model
Scope.
Claims (5)
1. a kind of English teaching projecting apparatus, includes pedestal, the pedestal is a square casing, on the top surface of the pedestal
The placement platform of one piece of level is laid, the placement platform holds thing glass by one layer of Fresnel Lenses and one layer and is made, described
Fresnel Lenses is laid on the lower section for holding thing glass, and the base interior is hollow to form installation cavity, in the installation cavity
In be provided with light source, transformer and fan, the light source includes bromine tungsten filament lamp, spherical reflector and condenser, and the sphere is anti-
Light microscopic and the condenser are located at the underface and surface of the bromine tungsten filament lamp respectively, and are formed on the spherical reflector
Downward concave surface, forms upward convex surface on the condenser, it is characterised in that：The transformer passes through a damper bar
The bottom of the installation cavity is fixed on, dividing plate is further fixed in the bottom of installation cavity, described dividing plate one end is fixed on the installation
The bottom of chamber, the other end is fixed on the side wall of the installation cavity, and is separated out in the installation cavity one piece of square cavity, institute
State fan to be arranged in the cavity, the dividing plate is made up of spring steel, some air vents have been shaped on the dividing plate.
2. English teaching projecting apparatus according to claim 1, it is characterised in that：Pass through spring shim at the top of the damper bar
The bottom of the transformer is fixed on, the bottom of the damper bar is fixed on the bottom of the installation cavity by spring shim.
3. English teaching projecting apparatus according to claim 1, it is characterised in that：It is fixed in the side for holding thing glass
Vertical elevating lever, be slidably connected elevator on the elevating lever, and rotating shaft has been worn on the elevator, at described turn
Swing arm is arranged on axle, the swing arm can be around the axis of rotation, in the fixed tripod in the end of the swing arm, described three
The bottom of corner bracket has been embedded camera lens, at the top of the tripod fixed reflective mirror and the reflective mirror and the tripod it
Between be formed with angle.
4. English teaching projecting apparatus according to claim 3, it is characterised in that：The rectangular triangle in section of the tripod
Shape, its bottom is a horizontal plane, and top is an inclined-plane.
5. English teaching projecting apparatus according to claim 1, it is characterised in that：The cavity is in a surface side of the pedestal
Opening is formd on wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720131674.4U CN206480172U (en) | 2017-02-14 | 2017-02-14 | A kind of English teaching projecting apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720131674.4U CN206480172U (en) | 2017-02-14 | 2017-02-14 | A kind of English teaching projecting apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206480172U true CN206480172U (en) | 2017-09-08 |
Family
ID=59748177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720131674.4U Expired - Fee Related CN206480172U (en) | 2017-02-14 | 2017-02-14 | A kind of English teaching projecting apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206480172U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108510809A (en) * | 2018-05-17 | 2018-09-07 | 佛山拾念科技有限公司 | A kind of integrated projector device people of history course teaching |
-
2017
- 2017-02-14 CN CN201720131674.4U patent/CN206480172U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108510809A (en) * | 2018-05-17 | 2018-09-07 | 佛山拾念科技有限公司 | A kind of integrated projector device people of history course teaching |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170908 Termination date: 20190214 |