CN104317146A - Projector and contrast control structure - Google Patents
Projector and contrast control structure Download PDFInfo
- Publication number
- CN104317146A CN104317146A CN201410612523.1A CN201410612523A CN104317146A CN 104317146 A CN104317146 A CN 104317146A CN 201410612523 A CN201410612523 A CN 201410612523A CN 104317146 A CN104317146 A CN 104317146A
- Authority
- CN
- China
- Prior art keywords
- light blocking
- blocking piece
- adjustment structure
- projector
- screw mandrel
- 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.)
- Pending
Links
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
- G03B21/142—Adjusting of projection optics
Abstract
The invention discloses a projector contrast control structure which comprises a substrate, a first light blocking piece and a second light blocking piece. The first light blocking piece and the second light blocking piece are located on one side and are parallel to each other. The bottom of the first light blocking piece and the bottom of the second light blocking piece are each provided with a light blocking piece center shaft and a light blocking piece rotating shaft. The two light blocking piece center shafts are in rotating fit with two axial holes in the substrate. The two light blocking piece rotating shafts penetrate through two crescent-moon-shaped guide holes in the substrate respectively. The two crescent-moon-shaped guide holes are bent in opposite directions. A trapezoid frame is arranged on the top of a control frame. Two control frame driving grooves parallel to the side edges of the trapezoid are formed in the trapezoid frame. The top ends of the light blocking piece rotating shafts are arranged in the control frame driving grooves. One lead screw penetrates through the trapezoid frame and drives the trapezoid frame to move up and down along the lead screw. The trapezoid frame drives the light blocking piece rotating shafts to move front and back along the crescent-moon-shaped guide holes. The light blocking piece rotating shafts move front and back to drive the first light blocking piece and the second light blocking piece to rotate by 90 degrees in the same direction or opposite directions.
Description
Technical field
The invention belongs to a kind of projector and contrast adjustment structure.
Background technology
Up to the present, the technology of projector is more and more ripe, and people are also more and more stronger to the dependence of projector, such as to the contrast requirement of projector.
The contrast of projector is a problem being difficult to capture always, and contrast is the ratio of brightness divided by the brightness of the darkest point that projector throws into point the brightest on screen.Current contrast ratio of projector is the highest can accomplish 100000:1, contrast when but this just measures, that is just light is all blocked by contrast adjustment structure when test comparison degree, make it can not launch inside projector, measure the contrast come like this and there is no practical significance, because this contrast adjustment structure is failure to actuate when reality uses.If do not have contrast adjustment structure, the contrast of projector can accomplish 2000:1 at most, and this and current televisor contrast, and fall far short.
This patent can provide a kind of new-type dynamic contrast adjustment structure, and he can control the switch of contrast ratio of projector adjustment structure easily.
Existing contrast ratio of projector structure is mainly by gear drive and deceleration, and the material of gear mainly plastics, contrast ratio of projector structure operationally temperature can be higher, easily be out of shape when plastic gear is heated, cause contrast ratio of projector structure cisco unity malfunction and projector can not be started shooting, time serious, contrast ratio of projector adjustment structure there will be hot melt phenomenon.Existing contrast ratio of projector adjustment structure gear quantity is relatively many, and during transmission, resistance is relatively large, and Long-Time Service there will be higher fraction defective, and is easy to occur the phenomenons such as stuck.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of contrast ratio of projector adjustment structure, and it solves the shortcoming of the existing adjustment structure based on gear.
It is as follows that the present invention solves the problems of the technologies described above taked technical scheme:
A kind of contrast ratio of projector adjustment structure, comprise: substrate and the first gear mating plate be parallel to each other and the second gear mating plate that are positioned at side, light barrier central shaft and light barrier revolving shaft is provided with bottom described first gear mating plate and second gear mating plate, and two light barrier central shafts rotate with the shaft hole matching of two on substrate respectively, two light barrier revolving shaftes are each passed through two crescent shape pilot holes on substrate, and these two crescent shape pilot holes bend in opposite directions; The top of described control cage is a ladder frame, described ladder frame is provided with the control cage driver slot that two are parallel to trapezoidal side, the top of light barrier revolving shaft is located in described control cage driver slot, one screw mandrel passes and drives described ladder frame to move up and down along screw mandrel, described ladder frame drives described light barrier revolving shaft to seesaw along described crescent shape pilot hole, drives described first gear mating plate do in opposite directions with second gear mating plate or rotate relative to 90 degree by seesawing of described light barrier revolving shaft.
Further, preferably, the edge side on described substrate is provided with two parallel chutes, and the following bottom of ladder frame is provided with two guide poles, and described guide pole to stretch in chute and along runner movement.
Further, preferably, the both sides up and down of described ladder frame be provided with two connecting holes below, described screw mandrel connects through this connecting hole, and one end of described screw mandrel connects a motor, and the other end is threaded togather mutually with the screw mandrel pilot hole on substrate.
Further, preferably, described crescent shape pilot hole is close to the near-end of chute and axis hole and is in and is parallel on a straight line of chute.
Further, preferably, described chute is parallel to screw mandrel.
Further, preferably, the following connecting hole on the both sides up and down of described ladder frame is a threaded hole.
After this invention takes such scheme, it is without any gears rotational structure, use screw mandrel reducing transmission structure, such output torque is more stable, and resistance is less, and the action of contrast ratio of projector adjustment structure is more even, and, contrast with convention control's degree adjustment structure, structure is more simple, greatly reduces production cost.
Other features and advantages of the present invention will be set forth in the following description, and, partly become apparent from instructions, or understand by implementing the present invention.Object of the present invention and other advantages realize by structure specifically noted in write instructions, claims and accompanying drawing and obtain.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is described in detail, to make above-mentioned advantage of the present invention definitely.Wherein,
Fig. 1 is the explosive view of contrast ratio of projector adjustment structure of the present invention;
Fig. 2 is the running status schematic diagram of contrast ratio of projector adjustment structure of the present invention;
Fig. 3 is the running status schematic diagram of contrast ratio of projector adjustment structure of the present invention.
Embodiment
Describe embodiments of the present invention in detail below with reference to drawings and Examples, to the present invention, how application technology means solve technical matters whereby, and the implementation procedure reaching technique effect can fully understand and implement according to this.It should be noted that, only otherwise form conflict, each embodiment in the present invention and each feature in each embodiment can be combined with each other, and the technical scheme formed is all within protection scope of the present invention.
Specifically, the invention reside in and provide a kind of projector and contrast ratio of projector adjustment structure, this structure can realize the repertoire of traditional structure, and solves a lot of problem of convention control's degree adjustment structure.
As Fig. 1, 2, shown in 3, wherein, a kind of projector, it comprises contrast ratio of projector adjustment structure, comprise: substrate 4 and the first gear mating plate 101 be parallel to each other and the second gear mating plate 102 that are positioned at side, first gear mating plate central shaft 201 and first gear mating plate revolving shaft 301 is provided with bottom described first gear mating plate 101, the bottom of described second gear mating plate 102 is provided with second gear mating plate central shaft 202 and second gear mating plate revolving shaft 302, and first gear mating plate central shaft 201 and second gear mating plate central shaft 202 are each passed through two axis holes on substrate, as the axis hole 12 that second gear mating plate in figure passes, and be mated rotation, wherein, two light barrier revolving shaftes are each passed through two crescent shape pilot holes 11 on substrate, and these two crescent shape pilot holes bend in opposite directions, wherein, the top of the opposite side of described control cage is a ladder frame 9, described ladder frame is provided with the control cage driver slot 10 that two are parallel to trapezoidal side, two light barrier revolving shaftes are through after axis hole, its top is located in described control cage driver slot, and, control cage 9 connects a screw mandrel 7, described screw mandrel 7 passes and drives described ladder frame to move up and down along screw mandrel, described ladder frame drives described light barrier revolving shaft to seesaw along described crescent shape pilot hole, described first gear mating plate is driven to do in opposite directions with second gear mating plate or rotate relative to 90 degree by seesawing of described light barrier revolving shaft.
Due to without any gears rotational structure, use screw mandrel reducing transmission structure, such output torque is more stable, resistance is less, and the action of contrast ratio of projector adjustment structure is more even, and, contrast with convention control's degree adjustment structure, structure is more simple, greatly reduces production cost.
In an embodiment, the edge side on described substrate is provided with two parallel chutes 5, and the following bottom of ladder frame is provided with two guide poles 8, and described guide pole to stretch in chute and along runner movement.
And, the both sides up and down of described ladder frame be provided with two connecting holes 15 below, described screw mandrel connects through this connecting hole, one end of described screw mandrel connects a motor 6, the other end is threaded togather mutually with the screw mandrel pilot hole 13 on substrate, the top of screw mandrel 7 is a screw mandrel locating shaft 14, described screw mandrel locating shaft 14 is threaded togather with described screw mandrel pilot hole 13, and, as shown in Figure 1, described crescent shape pilot hole is close to the near-end of chute and axis hole and is in and is parallel on a straight line of chute, described chute is parallel to screw mandrel, by this structure, above motor function can be realized.
And, the present invention is without any gears rotational structure, use screw mandrel reducing transmission structure, such output torque is more stable, resistance is less, the action of contrast ratio of projector adjustment structure is more even, and it is adjusting cancel out each other lateral stressed when saving catch switch, decreases frictional resistance during action.
As shown in Figure 2, now contrast adjustment structure is in opening.
Action 1: motor 6 rotates after charging, drives screw mandrel 7 to rotate.
Action 2: screw mandrel 7 is moved right by screw threaded connection relation drived control frame 9.
Action 3: first gear mating plate 101 starts to rotate under the driving of control cage chute 10.The action of second gear mating plate is with first gear mating plate, and contrast adjustment structure starts to close, and wherein, shown in Fig. 2, during light barrier rotation 90 degree, contrast adjustment structure is in full off state.
As shown in Figure 3, action 4: motor 6 charges backward upper rotation, drives screw mandrel 7 upwards to rotate.
Action 5: screw mandrel 7 is moved to the left by screw threaded connection relation drived control frame 9.
Action 6: first gear mating plate 101 starts to rotate under the driving of control cage chute 10.The action of second gear mating plate is with first gear mating plate, and contrast adjustment structure starts to open.During the rotation of light barrier shown in Fig. 3 90 degree, contrast adjustment structure is in full-gear.
Last it is noted that the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment to invention has been detailed description, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. a contrast ratio of projector adjustment structure, it is characterized in that, comprise: substrate and the first gear mating plate be parallel to each other and the second gear mating plate that are positioned at side, light barrier central shaft and light barrier revolving shaft is provided with bottom described first gear mating plate and second gear mating plate, and two light barrier central shafts rotate with the shaft hole matching of two on substrate respectively, two light barrier revolving shaftes are each passed through two crescent shape pilot holes on substrate, and these two crescent shape pilot holes bend in opposite directions; The top of described control cage is a ladder frame, described ladder frame is provided with the control cage driver slot that two are parallel to trapezoidal side, the top of light barrier revolving shaft is located in described control cage driver slot, one screw mandrel passes and drives described ladder frame to move up and down along screw mandrel, described ladder frame drives described light barrier revolving shaft to seesaw along described crescent shape pilot hole, drives described first gear mating plate do in opposite directions with second gear mating plate or rotate relative to 90 degree by seesawing of described light barrier revolving shaft.
2. contrast ratio of projector adjustment structure according to claim 1, it is characterized in that, edge side on described substrate is provided with two parallel chutes, and the following bottom of ladder frame is provided with two guide poles, and described guide pole to stretch in chute and along runner movement.
3. contrast ratio of projector adjustment structure according to claim 1 and 2, it is characterized in that, the both sides up and down of described ladder frame be provided with two connecting holes below, described screw mandrel connects through this connecting hole, one end of described screw mandrel connects a motor, and the other end is threaded togather mutually with the screw mandrel pilot hole on substrate.
4. contrast ratio of projector adjustment structure according to claim 2, is characterized in that, described crescent shape pilot hole is close to the near-end of chute and axis hole and is in and is parallel on a straight line of chute.
5. the contrast ratio of projector adjustment structure according to claim 2 or 4, is characterized in that, described chute is parallel to screw mandrel.
6. contrast ratio of projector adjustment structure according to claim 1 and 2, is characterized in that, the following connecting hole on the both sides up and down of described ladder frame is a threaded hole.
7. a projector, is characterized in that, comprises the arbitrary described contrast ratio of projector adjustment structure of claim 1 ~ 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410612523.1A CN104317146A (en) | 2014-11-04 | 2014-11-04 | Projector and contrast control structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410612523.1A CN104317146A (en) | 2014-11-04 | 2014-11-04 | Projector and contrast control structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104317146A true CN104317146A (en) | 2015-01-28 |
Family
ID=52372397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410612523.1A Pending CN104317146A (en) | 2014-11-04 | 2014-11-04 | Projector and contrast control structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104317146A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019184553A1 (en) * | 2018-03-27 | 2019-10-03 | 广景视睿科技（深圳）有限公司 | Aperture and projector |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6926454B1 (en) * | 2004-03-05 | 2005-08-09 | Nisca Corporation | Electromagnetic driving unit and light quantity regulating apparatus using the same |
| CN101233450A (en) * | 2005-07-29 | 2008-07-30 | 松下电器产业株式会社 | Shutter device and drive method |
| CN201876655U (en) * | 2010-06-03 | 2011-06-22 | 东莞市恒生数码制品有限公司 | Front projector contrast regulating system |
| JP4980036B2 (en) * | 2006-12-13 | 2012-07-18 | 日本電産コパル株式会社 | Projector aperture device |
| CN102955335A (en) * | 2011-08-12 | 2013-03-06 | 精工爱普生株式会社 | Dimmer and projector |
| CN103246142A (en) * | 2012-02-07 | 2013-08-14 | 精工爱普生株式会社 | Light-adjusting unit and projector |
| CN103257515A (en) * | 2012-02-20 | 2013-08-21 | 精工爱普生株式会社 | Light-adjusting unit and projector |
| JP2014115603A (en) * | 2012-11-19 | 2014-06-26 | Tokyo Micro:Kk | Projector optical path diaphragm device |
-
2014
- 2014-11-04 CN CN201410612523.1A patent/CN104317146A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6926454B1 (en) * | 2004-03-05 | 2005-08-09 | Nisca Corporation | Electromagnetic driving unit and light quantity regulating apparatus using the same |
| CN101233450A (en) * | 2005-07-29 | 2008-07-30 | 松下电器产业株式会社 | Shutter device and drive method |
| JP4980036B2 (en) * | 2006-12-13 | 2012-07-18 | 日本電産コパル株式会社 | Projector aperture device |
| CN201876655U (en) * | 2010-06-03 | 2011-06-22 | 东莞市恒生数码制品有限公司 | Front projector contrast regulating system |
| CN102955335A (en) * | 2011-08-12 | 2013-03-06 | 精工爱普生株式会社 | Dimmer and projector |
| CN103246142A (en) * | 2012-02-07 | 2013-08-14 | 精工爱普生株式会社 | Light-adjusting unit and projector |
| CN103257515A (en) * | 2012-02-20 | 2013-08-21 | 精工爱普生株式会社 | Light-adjusting unit and projector |
| JP2014115603A (en) * | 2012-11-19 | 2014-06-26 | Tokyo Micro:Kk | Projector optical path diaphragm device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019184553A1 (en) * | 2018-03-27 | 2019-10-03 | 广景视睿科技（深圳）有限公司 | Aperture and projector |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205806833U (en) | A kind of computer multimedia teaching remote training device | |
| CN105757943B (en) | Air outlet switching mechanism and cabinet air-conditioner with it | |
| CN104317146A (en) | Projector and contrast control structure | |
| CN206349103U (en) | A kind of intelligent display screen that there is upset to switch advertisement | |
| CN105068242A (en) | Intelligent light adjustment glass | |
| CN102518382A (en) | Solar protection device | |
| CN203950072U (en) | A kind of gun sight | |
| CN208486811U (en) | A kind of rolling screen door is hampered rebounding system | |
| CN204230099U (en) | The switch interlocking device of ring main unit | |
| CN203659768U (en) | Circuit breaker propulsion mechanism | |
| CN103977562B (en) | A kind of ladder puts down the amusement slide that ladder exchanges | |
| CN107150926A (en) | A kind of power cable device | |
| CN210636963U (en) | Speed-limiting automatic door opening and closing structure | |
| CN104317147B (en) | A kind of rapid comparison degree adjustment structure and projector | |
| CN203839727U (en) | Switch cabinet capable of automatically opening door | |
| CN204632282U (en) | Advertisement banister | |
| CN109405247A (en) | Put leaf transmission mechanism and air conditioner on-hook | |
| CN203384316U (en) | Eccentric shaft inertia torque increasing device | |
| CN202838864U (en) | Advertisement showing device | |
| CN203935609U (en) | The amusement slide that the flat ladder in one species stage exchanges | |
| CN203773205U (en) | Monitor aperture control device and monitor lens | |
| CN101818613B (en) | Curtain | |
| CN205382835U (en) | Mechanism is slideed in transmission of vertical hinged door | |
| CN109963050A (en) | A kind of regulation device for monitoring camera at the top of excavator | |
| CN206737780U (en) | A kind of built-in hollow glass louver for being easy to maintenance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150128 |
|
| RJ01 | Rejection of invention patent application after publication |