CN103439853B - Plane mirror projector optical machine and projector - Google Patents
Plane mirror projector optical machine and projector Download PDFInfo
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- CN103439853B CN103439853B CN201310307245.4A CN201310307245A CN103439853B CN 103439853 B CN103439853 B CN 103439853B CN 201310307245 A CN201310307245 A CN 201310307245A CN 103439853 B CN103439853 B CN 103439853B
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- plane mirror
- transmission shaft
- wallboard
- optical machine
- projector
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Abstract
The invention provides a kind of plane mirror projector optical machine and projector.Plane mirror projector optical machine comprises: casing, is located at the driving mechanism of the first wallboard of casing, comprise motor and and the transmission shaft that connects of motors, transmission shaft two ends are respectively equipped with first and revolve screw thread and second and revolve screw thread.First half-plane mirror and first revolves screw thread and matches.Second half-plane mirror and second revolves screw thread and matches.Motor drives transmission shaft to rotate, drive first, second half-plane mirror mobile in opposite directions with closed light path or opposing movement to open light path.The heat-absorbing block be oppositely arranged with first, second half-plane mirror.Above-mentioned plane mirror projector optical machine, utilize the first half-plane mirror and the second half-plane mirror, the light reflection that bulb can be made to send, and light is penetrated uniformly on heat-absorbing block, it is made to be absorbed, there will not be small size absorb a large amount of light and make this portion temperature sharply raise and burn out components and parts, and then projector is worked abnormal problem.
Description
Technical field
The present invention relates to projection art, particularly relate to a kind of plane mirror projector optical machine and projector.
Background technology
Along with the progress of society, people are more and more deep to the understanding of projector, also more and more higher to the requirement of projector, such as his noise, sharpness, contrast etc.
Traditional projector generally controls contrast by controlling dynamic aperture (IRIS) light barrier, but current contrast ratio of projector is not very high, still there is light can be through when complete black field, the reason that area is too small this is because IRIS is in the light, if continue the area that is in the light increasing IRIS, Hui Shi projector temperature when complete black field is too high and melt, and the light that IRIS reflects back can make the temperature of bulb spheroid raise rapidly, affect the serviceable life of bulb, IRIS light barrier uses metal material made, thermal conductivity is fine, the too high meeting of light barrier temperature makes the support equipment temperature requirement connected with light barrier also can be higher, thus increase the manufacturing cost of IRIS.
Summary of the invention
Based on this, be necessary absorb large calorimetric for IRIS light barrier small size in prior art and can not dispel the heat in time and local temperature is sharply raised, and then make the problem of projector's operation irregularity, a kind of plane mirror projector optical machine and projector are provided.
On the one hand, provide a kind of plane mirror projector optical machine, it comprises:
Casing, its bright dipping end comprises the first wallboard, the second wallboard, the 3rd wallboard, and the second wallboard and the 3rd wallboard are oppositely arranged and are located at the both sides of described first wallboard;
Driving mechanism, is arranged at described first wallboard, described driving mechanism comprise motor and and the transmission shaft that connects of motors, the two ends of described transmission shaft are respectively equipped with first and revolve screw thread and second and revolve screw thread;
First half-plane mirror, revolves screw thread match with described first;
Second half-plane mirror, revolves screw thread match with described second;
Described motor drives described transmission shaft to rotate, so drive described first half-plane mirror and the second half-plane mirror mobile in opposite directions with closed light path or opposing movement to open light path;
Heat-absorbing block, for absorbing the light reflected from described first half-plane mirror, the second half-plane mirror.
Wherein in an embodiment, described first wallboard is provided with correspondence and is parallel to the first half guide grooves of described transmission shaft, the second half guide grooves, under the rotarily driving of described transmission shaft, described first half-plane mirror moves along described the first half guide grooves, and described second half-plane mirror moves along described the second half guide grooves.
Wherein in an embodiment, the first web member that described first half-plane mirror comprises the first mirror body and is connected with described first mirror body, described first web member be provided with to revolve with described first that screw thread matches first revolve threaded hole, described first web member coordinates through described the first half guide grooves and described transmission shaft.
Wherein in an embodiment, the second web member that described second half-plane mirror comprises the second mirror body and is connected with described second mirror body, described second web member be provided with to revolve with described second that screw thread matches second revolve threaded hole, described second web member coordinates through described the second half guide grooves and described transmission shaft.
Wherein in an embodiment, described second wallboard is offered the first through hole matched with the profile of described first half-plane mirror, described first half-plane mirror under the rotarily driving of described transmission shaft through described first through hole.
Wherein in an embodiment, described 3rd wallboard is offered the second through hole matched with the profile of described second half-plane mirror, described second half-plane mirror under the rotarily driving of described transmission shaft through described second through hole.
Wherein in an embodiment, driving mechanism also comprises the pedestal arranging described transmission shaft, the transmission gear being sheathed on described transmission shaft, described transmission gear and described motor match, and described motor drives described transmission shaft counterclockwise or turn clockwise by described transmission gear.
Wherein in an embodiment, described pedestal comprises the first half pedestals and the second half pedestals, described the first half pedestals and described the second half base parallel intervals are arranged, described drive shaft mount is located at described the first half pedestals and described the second half pedestals, described transmission gear is sheathed on the interlude of described transmission shaft, and between described the first half pedestals and described the second half pedestals.
Wherein in an embodiment, described first half-plane mirror comprises the first reflecting surface, described second half-plane mirror comprises the second reflecting surface, and described first reflecting surface and the second reflecting surface are positioned at same plane, and described heat-absorbing block is positioned on the reflected light path of described first reflecting surface, the second reflecting surface.
On the other hand, provide a kind of projector, it comprises emitting bulb, and described projector comprises above-mentioned plane mirror projector optical machine, and described plane mirror projector optical machine is positioned in the light path of described emitting bulb.
The described plane mirror projector optical machine that foregoing invention provides utilizes described driving mechanism to drive described transmission shaft to rotate, and then drive described first half-plane mirror and the second half-plane mirror mobile in opposite directions with closed light path or opposing movement to open light path, thus, effectively avoid IRIS light barrier small size absorb large calorimetric and can not dispel the heat in time, local temperature is sharply raised, and then makes the problem of projector's operation irregularity; Simultaneously, utilize described first half-plane mirror and the second half-plane mirror, the light reflection that bulb can be made to send, and light is penetrated uniformly on heat-absorbing block, it is made to be absorbed uniformly, there will not be small size absorb a large amount of light and make this portion temperature sharply raise and burn out components and parts, and then projector is worked abnormal problem.
Accompanying drawing explanation
The schematic perspective view of the plane mirror projector optical machine that Fig. 1 provides for one embodiment of the invention;
Fig. 2 is the decomposing schematic representation of plane mirror projector optical machine described in Fig. 1.
Embodiment
For the ease of understanding the present invention, below with reference to relevant drawings, the present invention is described more fully.Better embodiment of the present invention is given in accompanying drawing.But the present invention can realize in many different forms, is not limited to embodiment described herein.On the contrary, provide the object of these embodiments be make to disclosure of the present invention understand more thorough comprehensively.
It should be noted that, when element is called as " being fixed on " another element, directly can there is element placed in the middle in it on another element or also.When an element is considered to " connection " another element, it can be directly connected to another element or may there is centering elements simultaneously.Term as used herein " vertical ", " level ", "left", "right" and similar statement just for illustrative purposes, do not represent it is unique embodiment.
Unless otherwise defined, all technology used herein and scientific terminology are identical with belonging to the implication that those skilled in the art of the present invention understand usually.The object of term used in the description of the invention herein just in order to describe concrete embodiment, is not intended to be restriction the present invention.Term as used herein " and/or " comprise arbitrary and all combinations of one or more relevant Listed Items.
See also Fig. 1 and Fig. 2, one embodiment of the invention provides a kind of plane mirror projector optical machine 100, and it comprises casing 10, driving mechanism 20, first half-plane mirror 30, second half-plane mirror 40 and heat-absorbing block 50.
The bright dipping end of casing 10 has the first wallboard 11, second wallboard 13, the 3rd wallboard 15 and the 4th wallboard 17.First wallboard 11 carries driving mechanism 20, and the second wallboard 13 and the 3rd wallboard 15 are oppositely arranged, and are connected to the both sides of the first wallboard 11, and the first wallboard 11 and the 4th wallboard 17 are oppositely arranged.
Driving mechanism 20 is arranged on the first wallboard 11, and it comprises motor 21, transmission shaft 23, pedestal 25, transmission gear 27 and upper cover 29.Motor 21 is connected with transmission shaft 23.The two ends of transmission shaft 23 are respectively equipped with first and revolve screw thread and second and revolve screw thread.Pedestal 25 is for arranging transmission shaft 23.Transmission gear 27 is sheathed on transmission shaft 23, and matches with motor 21.Motor 21 drives transmission shaft 23 counterclockwise or turn clockwise by transmission gear 27, and transmission gear 27 rotates with transmission shaft 23.The merging that matches of upper cover 29 and pedestal 25 is fixed on pedestal 25, prevents the transmission shaft 23 being arranged at pedestal 25 from coming off.
Be understandable that, the main shaft of motor 21 can drive transmission gear to rotate by the driving gear be meshed with transmission gear 27.
In illustrated embodiment, pedestal 25 comprises the first half pedestals 251 and the second half pedestals 252, and the first half pedestals 251 and the second half pedestal 252 parallel interval are arranged.Transmission shaft 23 is set up in the first half pedestals 251 and the second half pedestals 252.Transmission gear 27 is sheathed on the interlude of transmission shaft 23, and between the first half pedestals 251 and the second half pedestals 252.
In illustrated embodiment, the first wallboard 11 is provided with the first half guide grooves 111 and the second half guide grooves 113, and it is corresponding is also parallel to transmission shaft 23.The first half guide grooves 111 are not communicated with mutually with the second half guide grooves 113.Wherein, it is corresponding that the first half guide grooves 111 and first revolve screw thread, and it is corresponding that the second half guide grooves 113 and second revolve screw thread.
First of first half-plane mirror 30 and transmission shaft 23 revolves screw thread and matches.In the present embodiment, first half-plane mirror 30 comprises the first mirror body 31 and the first web member 33, first mirror body 31 is connected with the first web member 33, first web member 33 be provided with to revolve with first of transmission shaft 23 that screw thread matches first revolve threaded hole 331, the first web member 33 coordinates through guide groove 111 and transmission shaft 23.Particularly, the first web member 33 is sheathed on transmission shaft 23 and first and revolves thread helix through the first half guide grooves 111 and coordinate.First mirror body 31 comprises the first reflecting surface 35.4th wallboard 17 is positioned on the reflected light path of first surface of emission 35.The angle of the first reflecting surface 35 and the 4th wallboard 17 is 15-75 degree, and preferably, angle is 45 degree.When angle is 45 degree, the reflected light path of the first half-plane mirror 35 is perpendicular to the 4th wallboard 17.
Second of second half-plane mirror 40 and transmission shaft 23 revolves screw thread and matches.In the present embodiment, second half-plane mirror 40 comprises the second mirror body 41 and the second web member 43, second mirror body 41 is connected with the second web member 43, second web member 43 be provided with to revolve with second of transmission shaft 23 that screw thread matches second revolve threaded hole 431, the second web member 43 coordinates through guide groove 111 and transmission shaft 23.Particularly, the second web member 43 is sheathed on transmission shaft 23 and second and revolves thread helix through the second half guide grooves 113 and coordinate.Second mirror body 41 comprises the second reflecting surface the 45, four wallboard 17 and is positioned on the reflected light path of the second reflecting surface 45.The angle of the second reflecting surface 45 and the 4th wallboard 17 is 15-75 degree, and preferably, angle is 45 degree.When angle is 45 degree, the reflected light path of the second half-plane mirror 45 is perpendicular to the 4th wallboard 17.First reflecting surface 35 and the second reflecting surface 45 in the same plane.
Under the rotarily driving of transmission shaft 23, the first half-plane mirror 30 moves along described the first half guide grooves 111, and described second half-plane mirror moves along described the second half guide grooves 113.
Motor 21 drives transmission shaft 23 to rotate, so drive the first half-plane mirror 30 and the second half-plane mirror 40 mobile in opposite directions with closed light path or opposing movement to open light path.
Further, the second wallboard 13 is provided with the first through hole 131, first half-plane mirror 30 of matching with the profile of the first half-plane mirror 30 under the rotarily driving of transmission shaft 23 through the first through hole 131.3rd wallboard 15 is provided with the second through hole 151, second half-plane mirror 40 of matching with the profile of the second half-plane mirror 40 under the rotarily driving of transmission shaft 23 through the second through hole 151.
Heat-absorbing block 50, for absorbing the light reflected from described first half-plane mirror 30, second half-plane mirror 40.In this illustrated embodiment, heat-absorbing block 50 is arranged on the outside of the 4th wallboard 17.When first reflecting surface 35, second reflecting surface 45 closes, 4th wallboard 17 is positioned on the reflected light path of the first reflecting surface 35, second reflecting surface 45, is absorbed by the heat-absorbing block 50 on the 4th wallboard 17 by the reflected light reflected of the first reflecting surface 35, second reflecting surface 45.The material of heat-absorbing block 50 is the material that heat radiation heat absorptivity is good, general preferable alloy class material, selects iron to be the base material of heat-absorbing block in diagram.
The principle of work of plane mirror projector optical machine 100 is as follows: when motor 21 rotates counterclockwise, driving transmission gear 27 is rotated clockwise, and then drive transmission shaft 23 to rotate clockwise, under first of transmission shaft 23 revolves screw thread and the second effect respectively of revolving screw thread, first half-plane mirror 30 moves along the first half guide grooves 111, second half-plane mirror 40 moves along the second half guide grooves 113, both are for mutually to deviate from movement, thus, light path is slowly opened, screen brightens, and portions of light is absorbed by heat-absorbing block 50 after being reflected by the first half-plane mirror 30 and the second half-plane mirror 40.When motor 21 rotates clockwise, driving transmission gear 27 is rotated counterclockwise, and then drive transmission shaft 23 to rotate counterclockwise, under first of transmission shaft 23 revolves screw thread and the second effect respectively of revolving screw thread, the first half-plane mirror 30 moves along the first half guide grooves 111, second half-plane mirror 40 moves along the second half guide grooves 113, both are movement close to each other, and thus, light path slowly closes, screen is dimmed, and portions of light is absorbed by heat-absorbing block 50 after being reflected by the first half-plane mirror 30 and the second half-plane mirror 40.
In another embodiment, also provide a kind of projector, this projector comprises above-mentioned plane mirror projector optical machine 100, and plane mirror projector optical machine 100 is positioned in the light path of described bulb.The light of bulb luminescence to be reflexed to above heat-absorbing block and to absorb, heat-absorbing block is positioned at above air channel, the end, and the wind that air channel, the end is flowed out is easy to be cooled, and heat-absorbing block maintains static, and can high temperature be born, do not need to consider itself and with the temperature resistant capability of its support equipment.Avoid causing projector's fault because of local overheating.
The described plane mirror projector optical machine that foregoing invention provides utilizes described driving mechanism to drive described transmission shaft to rotate, and then drive described first half-plane mirror and the second half-plane mirror mobile in opposite directions with closed light path or opposing movement to open light path, thus, effectively avoid IRIS light barrier small size absorb large calorimetric and can not dispel the heat in time, local temperature is sharply raised, and then makes the problem of projector's operation irregularity; Simultaneously, utilize described first half-plane mirror and the second half-plane mirror, the light reflection that bulb can be made to send, and light is penetrated uniformly on heat-absorbing block, it is made to be absorbed uniformly, there will not be small size absorb a large amount of light and make this portion temperature sharply raise and burn out components and parts, and then projector is worked abnormal problem.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a plane mirror projector optical machine, is characterized in that, comprising:
Casing, its bright dipping end comprises the first wallboard, the second wallboard, the 3rd wallboard, and the second wallboard and the 3rd wallboard are located at the both sides of described first wallboard respectively, and are oppositely arranged;
Driving mechanism, is arranged at described first wallboard, described driving mechanism comprise motor and and the transmission shaft that connects of motors, the two ends of described transmission shaft are respectively equipped with first and revolve screw thread and second and revolve screw thread;
First half-plane mirror, revolves screw thread match with described first;
Second half-plane mirror, revolves screw thread match with described second;
Described motor drives described transmission shaft to rotate, so drive described first half-plane mirror and the second half-plane mirror mobile in opposite directions with closed light path or opposing movement to open light path; And
Heat-absorbing block, for absorbing the light reflected from described first half-plane mirror, the second half-plane mirror.
2. plane mirror projector optical machine as claimed in claim 1, it is characterized in that, described first wallboard is provided with correspondence and is parallel to the first half guide grooves of described transmission shaft, the second half guide grooves, under the rotarily driving of described transmission shaft, described first half-plane mirror moves along described the first half guide grooves, and described second half-plane mirror moves along described the second half guide grooves.
3. plane mirror projector optical machine as claimed in claim 2, it is characterized in that, the first web member that described first half-plane mirror comprises the first mirror body and is connected with described first mirror body, described first web member be provided with to revolve with described first that screw thread matches first revolve threaded hole, described first web member coordinates through described the first half guide grooves and described transmission shaft.
4. plane mirror projector optical machine as claimed in claim 2, it is characterized in that, the second web member that described second half-plane mirror comprises the second mirror body and is connected with described second mirror body, described second web member be provided with to revolve with described second that screw thread matches second revolve threaded hole, described second web member coordinates through described the second half guide grooves and described transmission shaft.
5. plane mirror projector optical machine as claimed in claim 1, it is characterized in that, described second wallboard is offered the first through hole matched with the profile of described first half-plane mirror, described first half-plane mirror under the rotarily driving of described transmission shaft through described first through hole.
6. plane mirror projector optical machine as claimed in claim 1, it is characterized in that, described 3rd wallboard is offered the second through hole matched with the profile of described second half-plane mirror, described second half-plane mirror under the rotarily driving of described transmission shaft through described second through hole.
7. plane mirror projector optical machine as claimed in claim 1, it is characterized in that, driving mechanism also comprises the pedestal arranging described transmission shaft, the transmission gear being sheathed on described transmission shaft, described transmission gear and described motor match, and described motor drives described transmission shaft counterclockwise or turn clockwise by described transmission gear.
8. plane mirror projector optical machine as claimed in claim 7, it is characterized in that, described pedestal comprises the first half pedestals and the second half pedestals, described the first half pedestals and described the second half base parallel intervals are arranged, described drive shaft mount is located at described the first half pedestals and described the second half pedestals, described transmission gear is sheathed on the interlude of described transmission shaft, and between described the first half pedestals and described the second half pedestals.
9. plane mirror projector optical machine as claimed in claim 1, it is characterized in that, described first half-plane mirror comprises the first reflecting surface, described second half-plane mirror comprises the second reflecting surface, described first reflecting surface and the second reflecting surface are positioned at same plane, and described heat-absorbing block is positioned on the reflected light path of described first reflecting surface and the second reflecting surface.
10. a projector, it comprises emitting bulb, it is characterized in that, described projector comprises the plane mirror projector optical machine as described in any one of claim 1 ~ 9, and described plane mirror projector optical machine is positioned in the light path of described emitting bulb.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310307245.4A CN103439853B (en) | 2013-07-19 | 2013-07-19 | Plane mirror projector optical machine and projector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310307245.4A CN103439853B (en) | 2013-07-19 | 2013-07-19 | Plane mirror projector optical machine and projector |
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| Publication Number | Publication Date |
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| CN103439853A CN103439853A (en) | 2013-12-11 |
| CN103439853B true CN103439853B (en) | 2016-02-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310307245.4A Active CN103439853B (en) | 2013-07-19 | 2013-07-19 | Plane mirror projector optical machine and projector |
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Citations (8)
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| CN1912734A (en) * | 2005-08-09 | 2007-02-14 | 株式会社日立制作所 | Projection display and aperture unit |
| JP2007156230A (en) * | 2005-12-07 | 2007-06-21 | Seiko Epson Corp | Optical diaphragm device and projector |
| JP2008046468A (en) * | 2006-08-18 | 2008-02-28 | Mitsubishi Electric Corp | Projection display apparatus |
| JP2008145949A (en) * | 2006-12-13 | 2008-06-26 | Nidec Copal Corp | Diaphragm apparatus for projector |
| CN101616286A (en) * | 2008-06-27 | 2009-12-30 | 株式会社日立制作所 | Optical unit and projection type video display unit |
| CN102141715A (en) * | 2010-01-28 | 2011-08-03 | 中强光电股份有限公司 | Dynamic aperture module, lighting device and projector |
| JP2013041017A (en) * | 2011-08-12 | 2013-02-28 | Seiko Epson Corp | Dimmer and projector |
| JP2013088783A (en) * | 2011-10-22 | 2013-05-13 | Daiichi Kasei Co Ltd | Diaphragm device |
-
2013
- 2013-07-19 CN CN201310307245.4A patent/CN103439853B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1912734A (en) * | 2005-08-09 | 2007-02-14 | 株式会社日立制作所 | Projection display and aperture unit |
| JP2007156230A (en) * | 2005-12-07 | 2007-06-21 | Seiko Epson Corp | Optical diaphragm device and projector |
| JP2008046468A (en) * | 2006-08-18 | 2008-02-28 | Mitsubishi Electric Corp | Projection display apparatus |
| JP2008145949A (en) * | 2006-12-13 | 2008-06-26 | Nidec Copal Corp | Diaphragm apparatus for projector |
| CN101616286A (en) * | 2008-06-27 | 2009-12-30 | 株式会社日立制作所 | Optical unit and projection type video display unit |
| CN102141715A (en) * | 2010-01-28 | 2011-08-03 | 中强光电股份有限公司 | Dynamic aperture module, lighting device and projector |
| JP2013041017A (en) * | 2011-08-12 | 2013-02-28 | Seiko Epson Corp | Dimmer and projector |
| JP2013088783A (en) * | 2011-10-22 | 2013-05-13 | Daiichi Kasei Co Ltd | Diaphragm device |
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| CN103439853A (en) | 2013-12-11 |
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