CN113556523B - Virtual reality live-action projection system - Google Patents
Virtual reality live-action projection system Download PDFInfo
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- CN113556523B CN113556523B CN202110779343.2A CN202110779343A CN113556523B CN 113556523 B CN113556523 B CN 113556523B CN 202110779343 A CN202110779343 A CN 202110779343A CN 113556523 B CN113556523 B CN 113556523B
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- projection
- fixedly arranged
- heat conducting
- sided
- cylinder
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3179—Video signal processing therefor
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- 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
- G03B21/16—Cooling; Preventing overheating
-
- 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
- G03B21/28—Reflectors in projection beam
Abstract
The invention discloses a virtual reality live-action projection system, which relates to the technical field of projection and comprises a base, wherein a reflection box is fixedly arranged on the base, a projection cylinder is fixedly connected on the reflection box, a light source is fixedly arranged in the projection cylinder, the system also comprises a heat dissipation component fixedly arranged on the projection cylinder, the heat dissipation component can be used for adjusting heat dissipation efficiency, the projection component fixedly arranged on the projection cylinder is used for projecting pictures and has a focusing function, and the reflection component fixedly arranged in the reflection box is used for dividing the projection pictures, so that observability is improved, and viewers positioned at different angles can watch the pictures; the invention has novel structure, realizes the split-screen of the projection picture and has high observability.
Description
Technical Field
The invention relates to the technical field of projection, in particular to a virtual reality live-action projection system.
Background
The projection system is an optical system for imaging an object on a projection screen after illumination, and the system is suitable for any projector, liquid crystal screen, LED large screen, plasma, digital video wall and the like based on action tracking technology. The projection system converts the motion of the interactive participant into graphical image interactive feedback. The device has practical 24 sets of interaction effects and customizable high-resolution content, and can realize the projection area which is incomparable in the same industry so as to meet the interaction requirements of different users. In short, the interactive projection system enables a user to experience an unprecedented smooth interactive experience by creating an immersive interactive experience.
Patent No. (CN 202023001052.0) discloses a heat dissipating device for a projector and a projector, and the projection of the projector does not realize a split screen function although the heat dissipating function is proposed.
Disclosure of Invention
Aiming at the technical problems, the invention provides a virtual reality live-action projection system, which realizes split screen of live-action projection, improves observability and can perform heat dissipation adjustment.
The technical scheme adopted by the invention is as follows: the utility model provides a virtual reality live-action projecting system, includes the base, fixedly mounted has the reflection case on the base, fixedly connected with projection section of thick bamboo on the reflection case, projection section of thick bamboo internal fixation is provided with the light source, still includes the radiating component of fixedly set up on the projection section of thick bamboo, radiating component includes refrigeration diode and deformation rope, refrigeration diode fixed mounting is on the light source, is fixedly provided with the heat-conducting plate on the refrigeration diode, is fixedly provided with a plurality of elastic heat-conducting strips that are used for the heat conduction on the heat-conducting plate, deformation rope and the one end contact of every elastic heat-conducting strip; the projection assembly is fixedly arranged on the projection cylinder and comprises a first convex lens and a second convex lens, wherein the first convex lens and the second convex lens are used for adjusting the focal length; the reflecting assembly is fixedly arranged in the reflecting box and comprises a single-sided reflecting mirror I, a double-sided reflecting mirror and a single-sided reflecting mirror II, wherein the single-sided reflecting mirror I and the single-sided reflecting mirror II are respectively arranged in the reflecting box in a sliding manner, and the double-sided reflecting mirror is rotatably arranged in the reflecting box;
further, the heat dissipation assembly further comprises a winding motor and a fan, one end of the elastic heat conducting fin is fixedly connected with the heat conducting plate, the winding motor is fixedly installed on the projection cylinder, a connector is fixedly connected to an output shaft of the winding motor, the connector is fixedly connected with the deformation rope, and the fan is rotatably installed on the heat conducting plate.
Further, the projection assembly further comprises a focusing air cylinder and a display screen frame, the focusing air cylinder is fixedly arranged on the projection cylinder, a piston rod of the focusing air cylinder is fixedly connected with the convex lens II, the display screen frame is fixedly arranged in the projection cylinder, a vacuum pump is fixedly arranged on the projection cylinder, a display screen is slidably arranged on the display screen frame, and the display screen is driven through a belt transmission structure.
Further, the reflection assembly further comprises an adjusting cylinder, the adjusting cylinder is fixedly arranged on the reflection box, an adjusting sliding seat is fixedly arranged on a piston rod of the electromagnet I, an adjusting rod I and an adjusting rod II are rotatably connected to the adjusting sliding seat, one end of the adjusting rod I is rotatably connected with the single-sided mirror I, one end of the adjusting rod II is rotatably connected with the single-sided mirror II, a double-sided mirror connecting rod is fixedly arranged on the double-sided mirror, a sliding groove is formed in the double-sided mirror connecting rod, and the double-sided mirror is driven by the electromagnetic assembly.
Further, the electromagnetic assembly comprises a guide rod, the guide rod is fixedly arranged on the reflecting box, an electromagnet I and an electromagnet II are respectively fixedly arranged at two ends of the guide rod, a reversing slide seat is further arranged on the guide rod in a sliding mode, the guide rod is in sliding connection with a sliding groove on the connecting rod of the double-sided reflecting mirror, and the electromagnet I and the electromagnet II are electrified to control the reversing slide seat to reciprocate.
Compared with the prior art, the invention has the beneficial effects that: (1) According to the invention, the connecting head is driven to rotate by the winding motor, so that the deformation rope is twisted, is in contact with one end of the elastic heat conduction sheet and is in a tightening state, a part of area on the undeformed elastic heat conduction sheet is not in contact with the heat conduction plate, and when the deformation rope is twisted, the elastic heat conduction sheet is deformed under stress, so that the contact area between the elastic heat conduction sheet and the heat conduction plate is enlarged, and the adjustment of heat conduction efficiency is realized; (2) The projection picture is reflected to the first single-sided reflecting mirror and the second single-sided reflecting mirror by the double-sided reflecting mirror, the first single-sided reflecting mirror and the second single-sided reflecting mirror reflect the picture to the watching carrier, so that the split screen of the picture is realized, and the watching of viewers at different angles is facilitated; (3) The vacuum pump can pump out the air in the projection cylinder, form vacuum in the projection cylinder, reduce the refraction of light and improve the projection quality.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention.
Fig. 2 is a schematic diagram of a partial enlarged structure of a heat dissipating assembly according to the present invention.
Fig. 3 is a schematic view of a partially enlarged structure of an electromagnetic assembly according to the present invention.
Fig. 4 is a schematic view of a partial enlarged structure of a projection assembly according to the present invention.
Fig. 5 is a schematic view of a partial enlarged structure of a display screen according to the present invention.
FIG. 6 is a schematic view of a reflective assembly according to the present invention.
Detailed Description
The invention will be further described with reference to specific examples, illustrative examples and illustrations of which are provided herein to illustrate the invention, but are not to be construed as limiting the invention.
Examples: as shown in fig. 1, 2, 3, 4, 5 and 6, in a virtual reality projection system, a support rod 101 is movably arranged on a base 102, a reflection box 104 is fixedly arranged on the base 102, and a projection cylinder 107 is fixedly connected on the reflection box 104; a light source 122 is fixedly arranged in the projection cylinder 107, a refrigeration diode 121 is fixedly arranged on the light source 122, and a heat conducting plate 120 is fixedly arranged on the refrigeration diode 121.
A plurality of elastic heat conducting fins 108 for conducting heat are fixedly arranged on the heat conducting plate 120, one end of each elastic heat conducting fin 108 is fixedly connected with the side surface of the heat conducting plate 120, which is opposite to the refrigerating diode 121, the other end of each elastic heat conducting fin 108 is a free end, the side surface of the elastic heat conducting fin 108, which faces the heat conducting plate 120, is always attached to the side surface of the heat conducting plate 120, which is opposite to the refrigerating diode 121, the winding motor 112 is fixedly arranged on the projection cylinder 107, the connector 111 is fixedly connected to the output shaft of the winding motor 112, the connector 111 is fixedly connected with the deformation ropes 110, the deformation ropes 110 are contacted with the movable end of each elastic heat conducting fin 108, and the fan 109 is rotatably arranged on the heat conducting plate 120; the elastic heat conducting strip 108 has elasticity, the winding motor 112 drives the connector 111 to rotate, so that the deformation rope 110 is twisted, the deformation rope 110 is in contact with one end of the elastic heat conducting strip 108 and is in a tightening state, a part of area on the undeformed elastic heat conducting strip 108 is not in contact with the heat conducting plate 120, when the deformation rope 110 is twisted, the elastic heat conducting strip 108 is deformed under stress, and then the contact area between the elastic heat conducting strip 108 and the heat conducting plate 120 is enlarged, the heat conducting efficiency is adjusted, and the fan 109 rotates, so that the purpose of rapid heat dissipation is achieved.
The first convex lens 125 is fixedly arranged on the projection cylinder 107, the second convex lens 126 is slidably arranged on the projection cylinder 107, the focusing cylinder 123 is fixedly arranged on the projection cylinder 107, a piston rod of the focusing cylinder 123 is fixedly connected with the second convex lens 126, the display screen frame 124 is fixedly arranged in the projection cylinder 107, and the projection cylinder 107 is fixedly provided with the vacuum pump 103; the display screen 127 is slidably arranged on the display screen frame 124, the display screen 127 is driven by a belt transmission structure, the belt transmission structure comprises a transposition motor 128, a belt 129 and two belt pulleys 130, the transposition motor 128 is fixedly arranged on the display screen frame 124, one belt pulley 130 is fixedly connected to an output shaft of the transposition motor 128, the other belt pulley 130 is rotatably arranged on the display screen frame 124, the two belt pulleys 130 are connected through the belt 129, and the belt 129 is fixedly connected with the display screen 127.
The first single-sided reflecting mirror 131 and the second single-sided reflecting mirror 133 are respectively and slidably arranged in the reflecting box 104, the double-sided reflecting mirror 132 is rotatably arranged in the reflecting box 104, the adjusting cylinder 116 is fixedly arranged on the reflecting box 104, the adjusting sliding seat 113 is fixedly arranged on a piston rod of the adjusting cylinder 116, the adjusting sliding seat 113 is rotatably connected with the first adjusting rod 105 and the second adjusting rod 106, one end of the first adjusting rod 105 is rotatably connected with the first single-sided reflecting mirror 131, and one end of the second adjusting rod 106 is rotatably connected with the second single-sided reflecting mirror 133.
The double-sided mirror 132 is fixedly provided with a double-sided mirror connecting rod 117, the double-sided mirror connecting rod 117 is provided with a chute, the guide rod 115 is fixedly arranged on the reflecting box 104, two ends of the guide rod 115 are respectively fixedly provided with an electromagnet 114 and an electromagnet 119, the guide rod 115 is also provided with a reversing slide seat 118 in a sliding manner, and the guide rod 115 is in sliding connection with the chute on the double-sided mirror connecting rod 117.
When the invention is executed, the transposition motor 128 drives the belt pulley 130, the display screen 127 is driven by the belt to move, and different display contents can be arranged on the display screen 127, so that the projection contents can be conveniently selected; when the display content on the display screen 127 is located at the front end of the light source 122, the vacuum pump 103 can pump out the air in the projection cylinder 107, and vacuum is formed in the projection cylinder 107, so that the refraction of light is reduced, and the projection quality is improved.
The focusing cylinder 123 controls the distance between the convex lens II 126 and the convex lens I125 to realize projection focusing; the heat generated by the light source 122 is seriously generated due to long-time operation of the light source 122, the refrigerating diode 121 is used for reducing the temperature of the light source 122, meanwhile, the heat generated by the light source 122 is transmitted to the heat conducting plate 120, the heat conducting plate 120 transmits the heat to the elastic heat conducting sheet 108, so that the heat can be rapidly transmitted out, and the fan 109 rotates to play a role of heat dissipation; the winding motor 112 drives the connector 111 to rotate, so that the deformation rope 110 is twisted, the deformation rope 110 is in contact with the movable end of the elastic heat conduction sheet 108 and is in a tightening state, a part of areas on the undeformed elastic heat conduction sheet 108 are not in contact with the heat conduction plate 120, when the deformation rope 110 is twisted, the elastic heat conduction sheet 108 is deformed under force, and the contact area between the elastic heat conduction sheet 108 and the heat conduction plate 120 is enlarged, so that the adjustment of heat conduction efficiency is realized.
The projected picture is reflected to the first single-sided mirror 131 and the second single-sided mirror 133 through the double-sided mirror 132, and the second electromagnet 119 and the first electromagnet 114 are electrified in a conversion way, so that the reversing slide seat 118 performs reciprocating motion; the electromagnet II 119 is electrified, the electromagnet I114 is not electrified, so that the reversing slide seat 118 moves to one side, otherwise, the electromagnet II 119 is not electrified, the electromagnet I114 is electrified, so that the reversing slide seat 118 moves to the other side, the frequency of reciprocating motion of the reversing slide seat 118 is improved by improving the conversion power frequency, and the double-sided mirror connecting rod 117 is enabled to rapidly reciprocate under the connection of the reversing slide seat 118 and the double-sided mirror connecting rod 117, so that the double-sided mirror 132 rapidly swings.
The projection picture is reflected to the first single-sided mirror 131 and the second single-sided mirror 133 by the double-sided mirror 132, and the first single-sided mirror 131 and the second single-sided mirror 133 reflect the picture to the watching carrier, so that split screens of the picture are realized, and the watching of viewers at different angles is facilitated; because the swinging frequency of the double-sided mirror 132 is high, the images reflected by the double-sided mirror 132 will be continuous, no jump flash will occur, the adjusting cylinder 116 controls the adjusting slide 113 to move, and under the connecting action of the adjusting lever 105 and the adjusting lever 106, the single-sided mirror 131 and the single-sided mirror 133 realize the distance adjustment.
The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the present invention without inventive labor, as those skilled in the art will recognize from the above-described concepts.
Claims (2)
1. The utility model provides a virtual reality live-action projecting system, includes the base, fixedly mounted has the reflection case on the base, fixedly connected with projection section of thick bamboo on the reflection case, projection section of thick bamboo internal fixation is provided with the light source, its characterized in that still includes:
the heat dissipation assembly is fixedly arranged on the projection cylinder and comprises a refrigeration diode and a deformation rope, the refrigeration diode is fixedly arranged on the light source, a heat conducting plate is fixedly arranged on the refrigeration diode, a plurality of elastic heat conducting fins for conducting heat are fixedly arranged on the heat conducting plate, one end of each elastic heat conducting fin is fixedly connected with the side surface of the heat conducting plate, which is opposite to the refrigeration diode, the other end of each elastic heat conducting fin is a free end, the side surface of the elastic heat conducting fin, which faces the heat conducting plate, is always attached to the side surface of the heat conducting plate, which is opposite to the refrigeration diode, and the deformation rope is in contact with the movable end of each elastic heat conducting fin;
the projection assembly is fixedly arranged on the projection cylinder and comprises a first convex lens and a second convex lens, wherein the first convex lens and the second convex lens are used for adjusting the focal length;
the reflecting assembly is fixedly arranged in the reflecting box and comprises a single-sided reflecting mirror I, a double-sided reflecting mirror and a single-sided reflecting mirror II, wherein the single-sided reflecting mirror I and the single-sided reflecting mirror II are respectively arranged in the reflecting box in a sliding manner, and the double-sided reflecting mirror is rotatably arranged in the reflecting box;
the heat dissipation assembly further comprises a winding motor and a fan, one end of the elastic heat conducting fin is fixedly connected with the heat conducting plate, the winding motor is fixedly arranged on the projection cylinder, a connector is fixedly connected to an output shaft of the winding motor, the connector is fixedly connected with the deformation rope, and the fan is rotatably arranged on the heat conducting plate;
the reflection assembly further comprises an adjusting cylinder, the adjusting cylinder is fixedly arranged on the reflection box, an adjusting sliding seat is fixedly arranged on a piston rod of the adjusting cylinder, the adjusting sliding seat is rotationally connected with an adjusting rod I and an adjusting rod II, one end of the adjusting rod I is rotationally connected with the single-sided mirror I, one end of the adjusting rod II is rotationally connected with the single-sided mirror II, a double-sided mirror connecting rod is fixedly arranged on the double-sided mirror, a sliding groove is arranged on the double-sided mirror connecting rod, and the double-sided mirror is driven by the electromagnetic assembly;
the electromagnetic assembly comprises a guide rod, the guide rod is fixedly arranged on the reflecting box, an electromagnet I and an electromagnet II are respectively fixedly arranged at two ends of the guide rod, a reversing slide seat is further arranged on the guide rod in a sliding mode, and the guide rod is in sliding connection with a slide groove on the connecting rod of the double-sided reflecting mirror.
2. The virtual reality projection system of claim 1, wherein: the projection assembly further comprises a focusing air cylinder and a display screen frame, the focusing air cylinder is fixedly arranged on the projection cylinder, a piston rod of the focusing air cylinder is fixedly connected with the convex lens II, the display screen frame is fixedly arranged in the projection cylinder, a vacuum pump is fixedly arranged on the projection cylinder, a display screen is slidably arranged on the display screen frame, and the display screen is driven through a belt transmission structure.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110779343.2A CN113556523B (en) | 2021-07-09 | 2021-07-09 | Virtual reality live-action projection system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110779343.2A CN113556523B (en) | 2021-07-09 | 2021-07-09 | Virtual reality live-action projection system |
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| CN113556523A CN113556523A (en) | 2021-10-26 |
| CN113556523B true CN113556523B (en) | 2023-06-13 |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101017390A (en) * | 2006-02-10 | 2007-08-15 | 台湾精星科技股份有限公司 | Heat dissipating device |
| RU68143U1 (en) * | 2006-10-23 | 2007-11-10 | Денис Юрьевич Новиков | PROJECTION UNIT FOR OUTDOOR VIDEO ADVERTISING |
| CN101630066A (en) * | 2009-08-17 | 2010-01-20 | 浙江大学 | Three-dimensional display device of full-view visual field based on high-speed projector |
| CN105549314A (en) * | 2016-03-09 | 2016-05-04 | 京东方科技集团股份有限公司 | Projection display device |
| CN106439470A (en) * | 2016-11-30 | 2017-02-22 | 广东技术师范学院 | Industrial lubricating oil rapid cooling device |
| CN107422458A (en) * | 2017-09-08 | 2017-12-01 | 杭州有人光电技术有限公司 | A kind of full HD projection lens of L-type short focus of low F numbers |
| CN109799616A (en) * | 2019-02-20 | 2019-05-24 | 成都理想境界科技有限公司 | A kind of projection display equipment |
| CN110501752A (en) * | 2019-07-10 | 2019-11-26 | 中国科学院上海技术物理研究所 | A kind of detector radiator based on TEC refrigeration |
| CN112859501A (en) * | 2020-12-31 | 2021-05-28 | 山东百特展览工程有限公司 | Interactive projection system for full-sense multimedia exhibition |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101246301A (en) * | 2007-02-12 | 2008-08-20 | 财团法人工业技术研究院 | Projection device |
| CN209844758U (en) * | 2019-04-30 | 2019-12-24 | 重庆鸽牌电线电缆有限公司 | Heat radiator for motor |
-
2021
- 2021-07-09 CN CN202110779343.2A patent/CN113556523B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101017390A (en) * | 2006-02-10 | 2007-08-15 | 台湾精星科技股份有限公司 | Heat dissipating device |
| RU68143U1 (en) * | 2006-10-23 | 2007-11-10 | Денис Юрьевич Новиков | PROJECTION UNIT FOR OUTDOOR VIDEO ADVERTISING |
| CN101630066A (en) * | 2009-08-17 | 2010-01-20 | 浙江大学 | Three-dimensional display device of full-view visual field based on high-speed projector |
| CN105549314A (en) * | 2016-03-09 | 2016-05-04 | 京东方科技集团股份有限公司 | Projection display device |
| CN106439470A (en) * | 2016-11-30 | 2017-02-22 | 广东技术师范学院 | Industrial lubricating oil rapid cooling device |
| CN107422458A (en) * | 2017-09-08 | 2017-12-01 | 杭州有人光电技术有限公司 | A kind of full HD projection lens of L-type short focus of low F numbers |
| CN109799616A (en) * | 2019-02-20 | 2019-05-24 | 成都理想境界科技有限公司 | A kind of projection display equipment |
| CN110501752A (en) * | 2019-07-10 | 2019-11-26 | 中国科学院上海技术物理研究所 | A kind of detector radiator based on TEC refrigeration |
| CN112859501A (en) * | 2020-12-31 | 2021-05-28 | 山东百特展览工程有限公司 | Interactive projection system for full-sense multimedia exhibition |
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