CN210721003U - Folding type projection holographic screen device for volume holographic projector - Google Patents
Folding type projection holographic screen device for volume holographic projector Download PDFInfo
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- CN210721003U CN210721003U CN201921239737.3U CN201921239737U CN210721003U CN 210721003 U CN210721003 U CN 210721003U CN 201921239737 U CN201921239737 U CN 201921239737U CN 210721003 U CN210721003 U CN 210721003U
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Abstract
The utility model discloses a holographic screen device of foldable projection that volume holographic projector used, including two supporting substrate and holographic screen body, holographic screen body comprises first screen and second screen, the mounting groove has been seted up to one side of supporting substrate, and one side that two mounting grooves are close to each other all sets up to the opening, and first screen and second screen fixed mounting are respectively in the mounting groove that corresponds, and the bottom of first screen contacts with the top of second screen, and one side bottom fixed mounting that lies in a supporting substrate of top in two supporting substrate has two first circle covers, and one side top fixed mounting of another supporting substrate has two second circle covers. The utility model discloses simple structure, convenient operation is convenient for fold and fix first screen and second screen fast, and first screen and second screen shelter from the protection by two supporting substrate after folding, effectively avoid exposing at the external damage phenomenon, improve life, reduce occupation space, are favorable to using.
Description
Technical Field
The utility model relates to a holographic screen technical field especially relates to a foldable projection holographic screen device that volume holographic projector used.
Background
The projection holographic screen is also called holographic rear projection screen or composite hologram, and is composed of holographic pixel units, each pixel unit is based on an image plane holographic structure of speckle, and the elementary gratings play roles in modulating light projected by the holographic projector and directionally diffracting and imaging.
The holographic screen of the folding type projection holographic screen device for the existing volume holographic projector does not have the folding protection function, so that the occupied space is large and not portable, the screen surface is exposed violently and easily damaged when the folding type projection holographic screen device is not used, the service life is shortened, and the folding type projection holographic screen device is not beneficial to use.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art and providing a folding type projection holographic screen device for a volume holographic projector.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a folding type projection holographic screen device for a volume holographic projector comprises two supporting base plates and a holographic screen body, wherein the holographic screen body consists of a first screen and a second screen, one side of each supporting base plate is provided with a mounting groove, one side, close to each other, of each mounting groove is provided with an opening, the first screen and the second screen are respectively and fixedly mounted in the corresponding mounting grooves, the bottom of the first screen is contacted with the top of the second screen, the bottom of one side of one supporting base plate positioned above the two supporting base plates is fixedly provided with two first round sleeves, the top of one side of the other supporting base plate is fixedly provided with two second round sleeves, the two second round sleeves are positioned between the two first round sleeves, the first screen and the second screen are positioned between the two second round sleeves, the first round sleeve positioned above the second round sleeve are rotatably sleeved with the same pin shaft, the top of one supporting base plate is provided with a rectangular groove with openings on both sides, two slots have been seted up at the top of another supporting baseplate, the rectangular channel is equipped with the baffle, and two inserted bars of bottom one side fixedly connected with of baffle, the bottom of inserted bar extends to a supporting baseplate's below and blocks mutually with the slot that corresponds, two springs of fixedly connected with between the bottom inner wall of rectangular channel and the bottom of baffle, and the spring movable sleeve establishes on the inserted bar that corresponds, two draw-in grooves have been seted up to the bottom of another supporting baseplate, one side of baffle extends to a supporting baseplate outer and fixedly connected with pull head, two card posts of bottom opposite side fixedly connected with of baffle, and card post and the draw-in groove looks adaptation that corresponds, the bottom of a supporting baseplate and another supporting baseplate's top movable contact.
Preferably, two round holes are formed in the inner wall of the bottom of the rectangular groove, and the side walls of the round holes are in sliding connection with the outer sides of the corresponding inserting rods.
Preferably, a first bearing is fixedly sleeved in the first round sleeve, and an inner ring of the first bearing is fixedly sleeved with the outer side of the corresponding pin shaft.
Preferably, a second bearing is fixedly sleeved in the second round sleeve, and an inner ring of the second bearing is fixedly sleeved with the outer side of the corresponding pin shaft.
Preferably, the bottom of one side of one support substrate is provided with two first fan-shaped grooves of which the bottoms are both openings, the top of one side of the other support substrate is provided with two second fan-shaped grooves of which the tops are both openings, the first fan-shaped groove and the second fan-shaped groove which are positioned on the same side form a semicircle, the side wall of the first fan-shaped groove is fixedly bonded with the outer side of the first round sleeve, and the side wall of the second fan-shaped groove is fixedly bonded with the side wall of the second round sleeve.
Preferably, two sides of the baffle plate are not in contact with the inner walls of the two sides of the rectangular groove.
Compared with the prior art, the beneficial effects of the utility model are that:
through the matching of the first screen, the second screen, the supporting base plates, the mounting grooves, the rectangular grooves, the baffle plates, the pull heads, the inserting rods, the inserting grooves, the springs, the clamping grooves, the clamping columns, the second round sleeves, the first round sleeves and the pin shafts with the round holes, the baffle plates are pulled upwards to drive the two inserting rods to be separated from the two inserting grooves and stretch the two springs, at the moment, one supporting base plate positioned above is rotated clockwise to drive the first screen to rotate, one supporting base plate drives the two first round sleeves to rotate on the corresponding pin shafts respectively, when one side of one supporting base plate rotates to be contacted with one side of the other supporting base plate, the baffle plate rotates to be below the other supporting base plate, the pulling force on the baffle plate is released, at the moment, the springs in the stretching state reset and drive the two clamping columns to be inserted into the corresponding clamping grooves through the baffle plates respectively, at the moment, the folding of the first screen and the second screen, the baffle plate limits one supporting substrate through two inserted rods, and can prevent the rotation phenomenon.
The utility model discloses simple structure, convenient operation is convenient for fold and fix first screen and second screen fast, and first screen and second screen shelter from the protection by two supporting substrate after folding, effectively avoid exposing at the external damage phenomenon, improve life, reduce occupation space, are favorable to using.
Drawings
Fig. 1 is a schematic structural diagram of a foldable projection holographic screen device for a volume holographic projector according to the present invention;
fig. 2 is a schematic side view of a foldable projection holographic screen device for a volume holographic projector according to the present invention;
fig. 3 is a schematic side view of a foldable projection holographic screen device for a volume holographic projector according to the present invention;
fig. 4 is a schematic view of a folded side view structure of a foldable projection holographic screen device for a volume holographic projector according to the present invention;
fig. 5 is a schematic view of the folding side-view cross-sectional structure after folding of the foldable projection holographic screen device for the volume holographic projector.
In the figure: the novel LED lamp comprises a first screen 1, a second screen 2, a supporting base plate 3, a mounting groove 4, a rectangular groove 5, a baffle 6, a pull head 7, an inserted rod 8, a slot 9, a spring 10, a clamping groove 11, a clamping column 12, a second round sleeve 13, a first round sleeve 14, a pin shaft 15 and a round hole 16.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1-5, a foldable projection holographic screen device for volume holographic projector comprises two supporting substrates 3 and a holographic screen body, the holographic screen body is composed of a first screen 1 and a second screen 2, one side of the supporting substrate 3 is provided with a mounting groove 4, one side of the two mounting grooves 4 close to each other is provided with an opening, the first screen 1 and the second screen 2 are respectively and fixedly mounted in the corresponding mounting groove 4, the bottom of the first screen 1 contacts with the top of the second screen 2, the bottom of one side of one supporting substrate 3 above the two supporting substrates 3 is fixedly provided with two first circular sleeves 14, the top of one side of the other supporting substrate 3 is fixedly provided with two second circular sleeves 13, the two second circular sleeves 13 are positioned between the two first circular sleeves 14, the first screen 1 and the second screen 2 are both positioned between the two second circular sleeves 13, the first circular sleeve 14 and the second circular sleeve 13 positioned on the same side are rotatably sleeved with the same pin 15, the top of one supporting substrate 3 is provided with a rectangular groove 5 with two sides provided with openings, the top of the other supporting substrate 3 is provided with two slots 9, the rectangular groove 5 is provided with a baffle 6, one side of the bottom of the baffle 6 is fixedly connected with two insert rods 8, the bottom ends of the insert rods 8 extend to the lower part of one supporting substrate 3 and are clamped with the corresponding slots 9, two springs 10 are fixedly connected between the inner wall of the bottom of the rectangular groove 5 and the bottom of the baffle 6, the springs 10 are movably sleeved on the corresponding insert rods 8, the bottom of the other supporting substrate 3 is provided with two clamping grooves 11, one side of the baffle 6 extends to the outside of one supporting substrate 3 and is fixedly connected with a pull head 7, the other side of the bottom of the baffle 6 is fixedly connected with two clamping columns 12, the clamping columns 12 are matched with the corresponding clamping grooves 11, and the bottom of one supporting substrate 3 is movably contacted with the top of the, the utility model discloses simple structure, convenient operation is convenient for fold and fix first screen 1 and second screen 2 fast, and after folding first screen 1 and second screen 2 are sheltered from the protection by two supporting substrate 3, effectively avoid exposing at the impaired phenomenon outside, improve life, reduce occupation space, are favorable to using.
In the utility model, two circular holes 16 are arranged on the inner wall of the bottom of the rectangular groove 5, the side walls of the circular holes 16 are connected with the outer sides of the corresponding inserted bars 8 in a sliding way, a first bearing is fixedly sleeved in the first round sleeve 14, the inner ring of the first bearing is fixedly sleeved with the outer side of the corresponding pin shaft 15, a second bearing is fixedly sleeved in the second round sleeve 13, the inner ring of the second bearing is fixedly sleeved with the outer side of the corresponding pin shaft 15, two first fan-shaped grooves with the bottoms being respectively arranged in an opening way are arranged at the bottom of one side of one supporting substrate 3, two second fan-shaped grooves with the tops being arranged in an opening way are arranged at the top of one side of the other supporting substrate 3, the first fan-shaped grooves and the second fan-shaped grooves which are positioned at the same side form a semicircle, the side walls of the first fan-shaped grooves are fixedly bonded with the outer side of the first round sleeve 14, the, baffle 6's both sides and rectangular channel 5's both sides inner wall contactless, the utility model discloses simple structure, convenient operation is convenient for fold and fix first screen 1 and second screen 2 fast, and after folding first screen 1 and second screen 2 shelter from the protection by two supporting substrate 3, effectively avoid exposing the phenomenon of injury outward, improve life, reduce occupation space, are favorable to using.
The working principle is as follows: when the folding device is folded, firstly, the baffle 6 is pulled upwards, the baffle 6 drives the two insert rods 8 to move upwards and stretch the two springs 10, the insert rods 8 move upwards and are separated from the corresponding slots 9, at the moment, one support substrate 3 positioned above is rotated clockwise, one support substrate 3 drives the first screen 1 to rotate, simultaneously, one support substrate 3 drives the two first round sleeves 14 to rotate on the corresponding pin shafts 15 respectively, when one side of one support substrate 3 rotates to be contacted with one side of the other support substrate 3, at the moment, the baffle 6 rotates to be positioned below the other support substrate 3, at the moment, the tension on the baffle 6 is released, at the moment, the spring 10 in the stretching state resets to drive the baffle 6 to move back and reset, the baffle 6 drives the two clamping columns 12 to be respectively inserted into the corresponding clamping grooves 11, at the moment, the folding of the first screen 1 and the second screen 2 is finished, at the moment, the clamping grooves 11 limit the baffle 6 through the corresponding clamping, the baffle 6 limits one supporting substrate 3 through two inserting rods 8, can prevent the rotation phenomenon, when the screen needs to be opened for use, the baffle 6 is pulled to drive two clamping columns 12 to be separated from two clamping grooves 11, meanwhile, the baffle 6 drives two inserting rods 8 to move and stretch two springs 10, at the moment, one supporting substrate 3 rotates anticlockwise upwards, when the bottom of one supporting substrate 3 is contacted with the top of the other supporting substrate 3, the tension on the baffle 6 is released at the moment, the springs 10 in the stretching state reset and drive the two inserting rods 8 to downwards insert into the two inserting grooves 9 through the baffle 6, at the moment, the inserting grooves 9 limit one supporting substrate 3 through the corresponding inserting rods 8, so that one supporting substrate 3 is fixed, at the moment, the bottom of the first screen 1 is contacted with the top of the second screen 2 to form a holographic screen body, so that the first screen 1 and the second screen 2 can be quickly folded and fixed, and the first screen 1 and the second screen 2 are shielded and protected by the two supporting substrates 3 after being folded, thereby effectively avoiding the phenomenon of being exposed to external damage and being convenient for being quickly opened and fixed.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
1. A foldable projection holographic screen device for a volume holographic projector comprises two support substrates (3) and a holographic screen body, wherein the holographic screen body consists of a first screen (1) and a second screen (2), and is characterized in that one side of each support substrate (3) is provided with a mounting groove (4), one side, close to each other, of each mounting groove (4) is provided with an opening, the first screen (1) and the second screen (2) are respectively and fixedly mounted in the corresponding mounting grooves (4), the bottom of the first screen (1) is contacted with the top of the second screen (2), the bottom of one side of one support substrate (3) above the two support substrates (3) is fixedly provided with two first circular sleeves (14), the top of one side of the other support substrate (3) is fixedly provided with two second circular sleeves (13), and the two second circular sleeves (13) are positioned between the two first circular sleeves (14), the first screen (1) and the second screen (2) are both positioned between two second round sleeves (13), the first round sleeve (14) and the second round sleeve (13) positioned on the same side are rotatably sleeved with the same pin shaft (15), the top of one supporting substrate (3) is provided with a rectangular groove (5) with two sides both provided with openings, the top of the other supporting substrate (3) is provided with two slots (9), the rectangular groove (5) is provided with a baffle (6), one side of the bottom of the baffle (6) is fixedly connected with two inserting rods (8), the bottom ends of the inserting rods (8) extend to the lower side of one supporting substrate (3) and are clamped with the corresponding slots (9), two springs (10) are fixedly connected between the inner wall of the bottom of the rectangular groove (5) and the bottom of the baffle (6), the springs (10) are movably sleeved on the corresponding inserting rods (8), the bottom of the other supporting substrate (3) is provided with two clamping grooves (11), one side of the baffle (6) extends to the outside of one supporting substrate (3) and is fixedly connected with a pull head (7), the other side of the bottom of the baffle (6) is fixedly connected with two clamping columns (12), the clamping columns (12) are matched with the corresponding clamping grooves (11), and the bottom of one supporting substrate (3) is in movable contact with the top of the other supporting substrate (3).
2. The foldable holographic projection screen device for volume holographic projector according to claim 1, wherein two circular holes (16) are opened on the inner wall of the bottom of the rectangular groove (5), and the side walls of the circular holes (16) are slidably connected with the outer sides of the corresponding inserted rods (8).
3. A foldable holographic projection screen for volume holographic projectors according to claim 1, wherein said first round sleeve (14) has a first bearing fixed therein, and the inner ring of said first bearing is fixed to the outer side of the corresponding pin (15).
4. A foldable holographic projection screen for volume holographic projectors according to claim 1, wherein said second round sleeve (13) is fixed with a second bearing, and the inner ring of said second bearing is fixed with the outer side of the corresponding pin (15).
5. The foldable holographic projection screen device for volume holographic projector according to claim 1, wherein the bottom of one side of one support substrate (3) is formed with two first fan-shaped grooves with open bottoms, the top of one side of the other support substrate (3) is formed with two second fan-shaped grooves with open tops, the first fan-shaped groove and the second fan-shaped groove located on the same side form a semicircle, the side wall of the first fan-shaped groove is fixedly bonded with the outer side of the first circular sleeve (14), and the side wall of the second fan-shaped groove is fixedly bonded with the side wall of the second circular sleeve (13).
6. A foldable projection holographic screen device for a volume holographic projector according to claim 1, characterized in that both sides of said baffle (6) are not in contact with both side inner walls of the rectangular groove (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921239737.3U CN210721003U (en) | 2019-08-02 | 2019-08-02 | Folding type projection holographic screen device for volume holographic projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921239737.3U CN210721003U (en) | 2019-08-02 | 2019-08-02 | Folding type projection holographic screen device for volume holographic projector |
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| Publication Number | Publication Date |
|---|---|
| CN210721003U true CN210721003U (en) | 2020-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921239737.3U Active CN210721003U (en) | 2019-08-02 | 2019-08-02 | Folding type projection holographic screen device for volume holographic projector |
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| CN (1) | CN210721003U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113531321A (en) * | 2021-07-12 | 2021-10-22 | 广东白云学院 | Close hall classroom multimedia teaching equipment |
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2019
- 2019-08-02 CN CN201921239737.3U patent/CN210721003U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113531321A (en) * | 2021-07-12 | 2021-10-22 | 广东白云学院 | Close hall classroom multimedia teaching equipment |
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