WO2021110158A1 - 激光投影设备 - Google Patents

激光投影设备 Download PDF

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Publication number
WO2021110158A1
WO2021110158A1 PCT/CN2020/134061 CN2020134061W WO2021110158A1 WO 2021110158 A1 WO2021110158 A1 WO 2021110158A1 CN 2020134061 W CN2020134061 W CN 2020134061W WO 2021110158 A1 WO2021110158 A1 WO 2021110158A1
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WO
WIPO (PCT)
Prior art keywords
lifting
motor
rod
curtain
screen
Prior art date
Application number
PCT/CN2020/134061
Other languages
English (en)
French (fr)
Inventor
钟强
陈友才
杨长明
Original Assignee
青岛海信激光显示股份有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from CN201911235824.6A external-priority patent/CN112925153B/zh
Priority claimed from CN201911235821.2A external-priority patent/CN112925160B/zh
Priority claimed from CN201911235893.7A external-priority patent/CN112925161B/zh
Application filed by 青岛海信激光显示股份有限公司 filed Critical 青岛海信激光显示股份有限公司
Publication of WO2021110158A1 publication Critical patent/WO2021110158A1/zh

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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
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G03B21/58—Projection screens collapsible, e.g. foldable; of variable area

Definitions

  • This application relates to the field of projection technology, and in particular to a laser projection device.
  • the laser projection equipment mainly includes a projection host and a projection screen.
  • the projection host is mainly used to emit light beams to the projection screen
  • the projection screen is used to reflect the light beams emitted by the projection host to display images in the display area on the projection screen.
  • the display area on the projection screen refers to the area where the optical film is arranged.
  • the projection screen when using laser projection equipment for projection, can be fixed on a support, such as a wall, and then the projection host is placed directly in front of the projection screen to ensure that the beam emitted by the projection host can be projected.
  • the display area of the screen forms a display screen.
  • the support body is usually destroyed and punched, and a certain space will continue to be occupied after the projection screen is fixed.
  • the projection host is independently fixed, it is easily affected by external factors and changes in position. As a result, the emitted light beam may deviate from the display area on the projection screen, or the projection image may be distorted.
  • This application provides a laser projection device, including:
  • a receiving portion the receiving portion has a first receiving portion and a second receiving portion
  • optical engine the optical engine is arranged in the inner cavity of the first accommodating part, the first accommodating part is provided with a light-transmitting area, and the light beam emitted by the optical engine can pass through the light-transmitting area;
  • a projection screen including a curling mechanism and a curtain
  • the crimping mechanism is arranged in the inner cavity of the second accommodating part, the first end of the curtain is connected with the crimping mechanism, and the crimping mechanism can control the curtain to be retracted to the second accommodating part ;
  • the second accommodating portion is provided with an opening, the second end of the screen can pass through the opening and be unfolded, and the screen can receive the light beam passing through the light-transmitting area after being unfolded.
  • FIG. 1 is a schematic structural diagram of a laser projection device provided by an embodiment of the present application.
  • FIG. 2A is a schematic diagram of an exploded structure of a laser projection device provided by an embodiment of the present application.
  • 2B is a schematic diagram of an exploded structure of another laser projection device provided by an embodiment of the present application.
  • 3A is a schematic structural diagram of a crimping mechanism provided by an embodiment of the present application.
  • 3B is a schematic structural diagram of another crimping mechanism provided by an embodiment of the present application.
  • FIG. 4 is a schematic cross-sectional structure diagram of a reel provided by an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a roller provided by an embodiment of the present application.
  • Figure 6 is a schematic structural diagram of a reel provided by an embodiment of the present application.
  • FIG. 7 is a schematic diagram of an exploded structure of another laser projection device provided by an embodiment of the present application.
  • Figure 8 is a schematic structural diagram of a lifting mechanism provided by an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a support frame provided by an embodiment of the present application.
  • Fig. 10 is a schematic structural diagram of another support frame provided by an embodiment of the present application.
  • 111 light-transmitting area
  • 121 opening
  • 311 crimping controller
  • 312 crimping motor
  • 313 reel
  • 3121 motor body; 3122: roller; 3131: boss; 3132: card slot; 31221: groove;
  • 341 Lifting controller
  • 342 Lifting motor
  • 343 Support frame
  • 3434 fixed rod; 3432: cross rod; 3433: first lifting component; 3434: second lifting component;
  • 34341 slide rail; 34334: first lifting rod; 34332: second lifting rod; 34333: first elastic member; 34334: first push-pull rod; 34335: first sliding block; 34336: first support rod; 34337: first Two sliding blocks; 34338: the first limit block.
  • FIG. 1 illustrates a schematic structural diagram of a laser projection device according to an embodiment of the present application
  • FIG. 2A illustrates an exploded structure schematic diagram of a laser projection device according to an embodiment of the present application
  • the laser projection device includes: a storage unit 1, an optical engine 2 and a projection screen 3, and the projection screen 3 includes a curling mechanism 31 and a curtain 32.
  • the accommodating part 1 has a first accommodating part 11 and a second accommodating part 12, the optical engine 2 is arranged in the inner cavity of the first accommodating part 11, the first accommodating part 11 is provided with a light-transmitting area 111, and the optical engine 2 emits light The light beam can pass through the light-transmitting area 111.
  • the crimping mechanism 31 is arranged in the inner cavity of the second accommodating portion 12, and the first end of the curtain 32 is connected to the crimping mechanism 31, and the crimping mechanism 31 can control the curtain 32 to be retracted to the second accommodating portion 12, and the second accommodating portion 12
  • An opening 121 is provided, and the second end of the screen 32 can pass through the opening 121 and be unfolded. After the screen 32 is unfolded, it can receive the light beam passing through the light-transmitting area 111.
  • the optical engine 2 is arranged in the inner cavity of the first accommodating portion 11, the crimping mechanism 31 is arranged in the inner cavity of the second accommodating portion 12, and the first end of the curtain 32 and the crimping mechanism 31 are fixedly connected.
  • the integrated design of the optical engine 2 and the screen 32 is realized, and changes in the relative position between the optical engine 2 and the screen 32 are avoided. Since the curling mechanism 31 can control the curtain 32 to be retracted to the second accommodating portion 12, and the second end of the curtain 32 can pass through the opening 121 and unfold, the curtain 32 can be folded or unfolded, and laser projection is avoided. The problem of equipment taking up a lot of space when not in use. After the curtain 32 is unfolded, the light beam emitted by the optical engine 2 can pass through the light-transmitting area 111 provided in the first accommodating portion 11 and project on the curtain 32, thereby realizing the display of the screen.
  • the curling mechanism 31 drives the first end of the curtain 32 to rotate in a positive direction along the circumferential direction of the curling mechanism 31, thereby curling the curtain 32 on the curling mechanism 31 along the first end, so as to realize the folding of the curtain 32.
  • the curling mechanism 31 drives the first end of the curtain 32 to rotate in a reverse direction along the circumferential direction of the curling mechanism 31.
  • the second end of the curtain 32 can pass through the opening 121 and unfold.
  • the clockwise direction may be determined as the forward direction
  • the counterclockwise direction may be determined as the reverse direction.
  • the optical engine 2 may be an ultra-short-focus optical engine 2, of course, the optical engine 2 may also be a short-focus optical engine 2 or a long-focus optical engine 2.
  • the optical engine 2 may include a light source, an optomechanical system, a lens, a DMD (Digital Micromirror Device, Digital Micromirror Array) chip, a control circuit board, an audio processing system, an audio system, a heat dissipation system, and a heat sink, and a light source and The lenses are all fixedly connected to the optomechanical system.
  • the DMD chip is set in the optomechanical system.
  • the DMD chip, audio processing system and heat dissipation system are respectively electrically connected to the control circuit board.
  • the audio processing system is also electrically connected to the audio system, and the heat dissipation system is also electrically connected to the heat sink. Electric connection.
  • the control circuit board modulates the light beam emitted to the DMD chip by controlling the DMD chip, and carries the image output by the control circuit board through the modulated light beam
  • the information is emitted to the lens, and then a light beam is emitted through the lens to the screen 32 included in the projection screen 3 for display.
  • the control circuit board controls the audio processing system to process the audio information output by the control circuit board, and sends the processed audio information through the speaker.
  • the control circuit board can control the heat dissipation system to drive the radiator to dissipate heat, so as to avoid high temperature from affecting the functions of each device.
  • the vertical distance between the center point of the light-transmitting area 111 and the plane on which the screen 32 is unfolded is equal to the ratio between the throw ratio of the optical engine 2 and the width of the display area on the screen 32.
  • the width refers to the size value of the display area along the length of the opening 121.
  • the length of the display area on the screen 32 along the longitudinal direction of the opening 121 may be less than or equal to the width of the screen 32.
  • the center point of the light-transmitting area 111 may refer to the center point of the light beam emitted by the optical engine 2, that is, the light outlet of the optical engine 2 is located in the central area of the light-transmitting area 111.
  • the width of the curtain 32 refers to the length of the side of the curtain 32 in the same direction as the longitudinal direction of the opening 121.
  • the throw ratio is the performance parameter of the optical engine 2 itself
  • the throw ratio of the optical engine 2 is related to the selected optical engine 2. That is, if a different optical engine 2 is selected, the throw ratio is different, and the light transmission area 111 is different. The vertical distance between the center point and the plane where the curtain 32 is unfolded is also different.
  • the vertical distance between the center point of the light-transmitting area 111 and the plane when the curtain 32 is unfolded can be calculated from the projection ratio of the optical engine 2 and the width of the display area, and then the vertical distance is determined as the light-transmitting
  • the vertical distance between the center point of the area 111 and the center line of the opening 121 along the length direction can ensure that the light beam emitted by the optical engine 2 can be completely projected on the display area of the screen 32.
  • the distance from the center point of the light-transmitting area 111 to the two ends of the opening 121 may be equal. In this way, the projection formed by the light beam emitted by the optical engine 2 can be located in the central area of the display area on the screen 32.
  • the midpoint of one side of the screen 32 along the width direction of the display area coincides with the midpoint of the opening 121 along the length direction.
  • the display area is located in the central area of the screen 32.
  • the receiving portion 1 may have a T-shaped structure, and the volume of the first receiving portion 11 is smaller than the volume of the second receiving portion 12.
  • first accommodating portion 11 and the second accommodating portion 12 may be detachably connected, of course, the first accommodating portion 11 and the second accommodating portion 12 may also be non-detachable connection, that is, The first accommodating portion 11 and the second accommodating portion 12 may be integrally connected.
  • first accommodating portion 11 and the second accommodating portion 12 are detachably connected, if the optical engine 2 fails, the first accommodating portion 11 can be detached, and then the optical The first accommodating portion 11 of the engine 2 is sent for maintenance as a whole. If the crimping mechanism 31 included in the projection screen 3 fails, the second accommodating portion 12 can be disassembled, and the second accommodating portion provided with the crimping mechanism 31 can be removed. The part 12 is sent for repair as a whole, thereby avoiding sending the entire laser projection device for repair.
  • the first accommodating portion 11 and the second accommodating portion 12 can be connected by a telescopic rod, and the telescopic rod can extend and contract along its own axial direction, that is, as the telescopic rod expands and contracts, the first accommodating portion can be adjusted.
  • the vertical distance between the center point of the light-transmitting area 111 on the accommodating portion 11 and the opening 121 on the second accommodating portion 12, thereby adjusting the projection between the center point of the light beam emitted by the optical engine 2 and the plane where the curtain 32 is unfolded The distance is used to adjust the size of the display screen of the display area on the screen 32 of the light beam emitted by the optical engine 2.
  • the laser projection device It can be adapted to the optical engine 2 with different throw ratios.
  • the curtain may include a soft cloth and an optical film.
  • the first side of the soft cloth and the back of the optical film can be laminated and bonded, so that the optical film can be protected by the soft cloth.
  • the curtain may also include only the optical film, the optical film also includes a rollable substrate layer, and the rollable substrate layer is used to support the optical film.
  • the optical film may be a multilayer optical structure layer, and the optical structure layer includes a substrate layer, a diffusion layer, a Fresnel lens layer, and a reflection layer in order along the emission direction of the projected image beam.
  • the base material layer can also be arranged between the diffusion layer and the Fresnel lens layer.
  • the length of the above-mentioned soft cloth is greater than the length of the optical film, and the length of the optical film can be set as the length for displaying a picture of a preset size.
  • the offset area can be set to a soft cloth until the area that reaches the reel.
  • the laser projection device includes: a storage unit 1, an optical engine 2, and a projection screen 3.
  • the projection screen includes a curling mechanism 31, a curlable substrate 33, and a curtain 32.
  • the accommodating part 1 has a first accommodating part 11 and a second accommodating part 12, the optical engine 2 is arranged in the inner cavity of the first accommodating part 11, the first accommodating part 11 is provided with a light-transmitting area 111, and the optical engine 2 emits light The light beam can pass through the light-transmitting area 111.
  • the curling mechanism 31 is arranged in the inner cavity of the second accommodating portion 12, the first end of the curlable substrate 33 is fixedly connected to the curling mechanism 31, the curtain 32 is laminated and bonded on the first side surface of the curlable substrate 33, and the curling mechanism 31 can be controlled
  • the rollable substrate 33 is retracted to the second accommodating portion 12, and the second accommodating portion 12 is provided with an opening 121.
  • the second end of the rollable substrate 33 can pass through the opening 121 and expand. After the rollable substrate 33 is unfolded, the curtain 32 It can receive the light beam that passes through the light-transmitting area 111.
  • the optical engine 2 is disposed in the inner cavity of the first accommodating portion 11
  • the crimping mechanism 31 is disposed in the inner cavity of the second accommodating portion 12
  • the first end of the crimpable substrate 33 is fixed to the crimping mechanism 31.
  • the curtain 32 and the first side of the rollable substrate 33 are laminated and bonded, which realizes the integrated design of the optical engine 2 and the curtain 32, and avoids the change of the relative position between the optical engine 2 and the screen 32.
  • Through the rollable substrate 33 to support the curtain 32 to ensure the flatness of the curtain 32 after unfolding.
  • the curling mechanism 31 can control the curlable substrate 33 to be folded to the second accommodating portion 12, and the second end of the curlable substrate 33 can pass through the opening 121 and unfold, so that the curlable substrate 33 can be folded or unfolded,
  • the curtain 32 can be stowed or unfolded, and the problem of large space occupied by the laser projection device when not in use is avoided.
  • the light beam emitted by the optical engine 2 can pass through the light-transmitting area 111 provided in the first accommodating portion 11 and project on the curtain 32, thereby realizing the display of the screen.
  • the curling mechanism 31 can drive the first end of the curlable substrate 33 to rotate in a positive direction along the circumferential direction of the curling mechanism 31, thereby curling the curlable substrate 33 on the curling mechanism 31 along the first end to realize the curling
  • the retracting of the base plate 33 further realizes the retracting of the curtain 32.
  • the curling mechanism 31 can drive the first end of the curlable substrate 33 to rotate in the reverse direction along the circumferential direction of the curling mechanism 31.
  • the second end of the curlable substrate 33 can pass through the opening 121 and unfold, thereby realizing the unfolding of the curtain 32 .
  • the clockwise direction may be determined as the forward direction
  • the counterclockwise direction may be determined as the reverse direction.
  • the curtain 32 may include a soft cloth and an optical film.
  • the first side of the soft cloth and the back of the optical film can be laminated and bonded, and the second side of the soft cloth can be connected to the rollable film.
  • the first side surface of the substrate 33 is bonded, so that the optical film can be protected by a soft cloth to prevent the curlable substrate 33 from damaging the optical film.
  • the curtain 32 may also include only an optical film, and the optical film is directly laminated and bonded on the rollable substrate 33, as long as the screen 33 can be used to display the screen, which is not limited in the embodiment of the present application.
  • the rollable substrate 33 may have a rolling door structure to facilitate the curling of the rollable substrate 33.
  • the supporting effect of the rollable substrate 33 can be used to ensure the curtain. Flatness of 32.
  • the number of rollable door-shaped rollable substrates 33 may be two, and the length of each rollable substrate 33 may be greater than or equal to the length of the curtain 32, and the sum of the widths of the two rollable substrates 33 may be less than the width of the curtain 32. .
  • two rollable substrates 33 in a rolling door structure can be fixed on both sides of the curtain 32 along the length direction, respectively, so as to support the two sides of the curtain 32, thereby preventing the middle position of the curtain 32 from being on the second side of the curtain 32. Curls and wrinkles occur under the pulling force of one end and the second end, so as to improve the display effect of the screen 32.
  • the length of the curtain 32 refers to the length of the side on the curtain 32 where the second end of the curtain 32 is expanded in the same direction
  • the width of the curtain 32 refers to the side of the curtain 32 that is perpendicular to the second end of the curtain 32 in the expansion direction. length.
  • two rollable substrates 33 in a rolling door structure can be fixed on the front surface of the screen 32.
  • both rollable substrates 33 can also be fixed on the back of the screen 32, which is not limited in the embodiment of the present application.
  • the number of rollable door-shaped rollable substrates 33 may also be one, and the length of the rollable substrate 33 may be greater than the length of the curtain 32, and the width of the rollable substrate 33 may be greater than or equal to that of the curtain 32. The width.
  • the back surface of the curtain 32 can be fixed on the first side surface of the rollable substrate 33, so that the entire area of the screen 32 can be supported by the rollable substrate 33, so as to prevent the middle part of the screen 32 from being at the first end of the screen 32. Curls and wrinkles occur under the action of the pulling force of the second end, which reduces the display effect of the screen 32.
  • the back surface of the screen 32 refers to the side of the screen 32 away from the optical engine 2 when the screen 32 is unfolded.
  • the rollable substrate 33 may have a smooth planar structure when unfolded.
  • the size of the rollable substrate 33 that is flat when unfolded may be the same or similar to the size of the rollable substrate 33 that is in the shape of a rolling door described above, which is not limited in the embodiment of the present application.
  • the rollable substrate 33 that is smooth and flat when unfolded may be a synthetic cloth, and the synthetic cloth may be directly laminated and bonded with the optical film.
  • the rollable substrate 33 that is smooth and flat when unfolded can also be made of other materials, such as steel sheets, which are not limited in the embodiment of the present application.
  • the hardness of the rollable substrate 33 that is smooth and flat when unfolded may be between 60-70 Rockwell hardness.
  • the curlable substrate 33 can pass through the opening 121 and unfold under its own tension to realize the unfolding of the curtain 32; Curl in the circumferential direction, so as to drive the curtain 32 fixed on the rollable substrate 33 to be curled synchronously, so as to realize the folding or unfolding of the curtain 32.
  • the flatness of the rollable substrate 33 that is smooth and flat when unfolded can be determined artificially based on the throw ratio of the optical engine 2. For example, when the throw ratio of the optical engine 2 is 0.25, the flatness of the rollable substrate 33 can be 0.5. /10000.
  • the second side surface of the rollable substrate 33 may be provided with a protective coating.
  • the protective coating can avoid the light-receiving surface of the curtain 32 and the rollable substrate.
  • the direct contact with 33 can prevent the rollable substrate 33 from scratching the light-receiving surface of the screen 32, thereby improving the service life of the screen 32.
  • the protective coating may be a Teflon coating or a foam-like soft material coating, as long as the screen 32 can be isolated and protected, which is not limited in the embodiments of the present application.
  • the crimping mechanism 31 may include: a crimping controller 311, a crimping motor 312, and a reel 313.
  • the crimping controller 311 is electrically connected to the crimping motor 312, and the crimping motor 312 is connected to the reel 313. The ends are fixedly connected, and the first end of the screen 32 is fixedly connected to the roll 313.
  • the crimping controller 311 can control the start and stop of the crimping motor 312, and the crimping motor 312 can drive the reel 313 to rotate.
  • the curling controller 311 can control the curling motor 312 to rotate forward or backward when receiving a control signal sent by a remote controller that is communicatively connected to it.
  • the curling controller 311 may also be electrically connected with a control button. At this time, a control signal may be sent to the curling controller 311 through the control button to control the curling motor 312 to rotate forward or backward.
  • the crimping controller 311 may include a single-chip microcomputer and a signal receiver.
  • the single-chip microcomputer is electrically connected to the signal receiver and the crimping motor 312 respectively. In this way, after the signal receiver receives the control signal, the signal receiver sends the control signal to the single-chip microcomputer. Based on the control signal, the curling motor 312 is controlled to rotate forward or reverse.
  • the ends of the crimping motor 312 and the reel 313 can be restricted in the circumferential direction, and the crimping motor 312 and the reel 313 can move in the axial direction, so that the reel 313 can follow the crimping motor 312 to rotate synchronously and realize the crimping at the same time.
  • the motor 312 and the reel 313 are detachable.
  • the number of the crimping motor 312 can be one, so that the motor shaft of the crimping motor 312 can be connected to one end of the reel 313, and the end of the reel 313 away from the crimping motor 312 is connected to The inner wall of the second accommodating portion 12 is axially connected.
  • the end of the reel 313 connected to the inner wall shaft of the second accommodating portion 12 can provide support for the end of the reel 313 away from the crimping motor 312 through the shaft.
  • the end of the reel 313 connected with the inner wall shaft of the second accommodating portion 12 swayed, and the end of the reel 313 connected with the inner wall shaft of the second accommodating portion 12 can also be prevented from bending due to gravity.
  • the number of the crimping motors 312 may be two, and the two crimping motors 312 are respectively located on both sides of the reel 313 and are fixedly connected to the two ends of the reel 313 in the circumferential direction of the reel 313.
  • the inner wall of the reel 313 may be provided with a wedge groove (not shown in the figure) along the axial direction, and a wedge (not shown in the figure) may be provided on the motor shaft of the crimping motor 312, and the wedge can be It is clamped in the wedge groove along the circumferential direction of the winding drum 313, so that the motor shaft of the winding motor 312 and the winding drum 313 can be fixed in the circumferential direction, and the motor shafts of the winding drum 313 and the winding motor 312 can realize synchronous rotation.
  • the cross section of the wedge groove provided on the inner wall of the reel 313 can be rectangular or trapezoidal, or other shapes, as long as the torque of the crimping motor 312 can be transmitted, which is not limited in the embodiment of the present application.
  • the number of wedge grooves provided on the inner wall of the reel 313 may be one or multiple. When the number of the wedge grooves is multiple, the multiple wedge grooves may be provided along the circumferential direction of the reel 313.
  • the specific number of wedge grooves is set according to the torque transmitted by the crimping motor 312, as long as it can ensure that the torque of the crimping motor 312 is transmitted to the reel 313, and the reel 313 has a certain service life, the embodiment of the present application There is no restriction on this.
  • the crimping motor 312 may be a stepping motor, so that the crimping controller 311 can conveniently control the crimping motor 312.
  • the curling controller 311 can control the forward rotation and reverse rotation of the stepping motor by sending a control signal to the stepping motor, thereby driving the reel 313 to forward and reverse rotation.
  • the crimping motor 312 may also be other motors, such as a DC geared motor, etc., as long as it can be easily controlled by the crimping controller 311, which is not limited in the embodiment of the present application.
  • FIG. 3B shows a schematic structural diagram of another crimping mechanism.
  • the crimping mechanism 31 may include: a crimping controller 311, a crimping motor 312, and a reel 313.
  • the crimping controller 311 is electrically connected to the crimping motor 312, and the crimping motor 312 is fixedly connected to the end of the reel 313.
  • the first end of the curled substrate 33 is fixedly connected to the roll 313.
  • the crimping controller 311 can control the start and stop of the crimping motor 312, and the crimping motor 312 can drive the reel 313 to rotate.
  • the curling controller 311 can control the curling motor 312 to rotate forward or backward when receiving a control signal sent by a remote controller that is communicatively connected to it.
  • the crimping controller 311 may also be electrically connected with a control button. At this time, a control signal can be sent to the crimping controller 311 through the control button to control the crimping motor 312 to rotate forward or backward.
  • the crimping controller 311 may include a single-chip microcomputer and a signal receiver.
  • the single-chip microcomputer is electrically connected to the signal receiver and the crimping motor 312 respectively. In this way, after the signal receiver receives the control signal, the signal receiver sends the control signal to the single-chip microcomputer. Based on the control signal, the curling motor 312 is controlled to rotate forward or reverse.
  • the ends of the crimping motor 312 and the reel 313 can be restricted in the circumferential direction, and the crimping motor 312 and the reel 313 can move in the axial direction, so that the reel 313 can follow the crimping motor 312 to rotate synchronously and realize the crimping at the same time.
  • the motor 33 and the reel 313 are detachable.
  • the number of the crimping motor 312 can be one, so that the motor shaft of the crimping motor 312 can be shaft connected to one end of the reel 313, and the end of the reel 313 away from the crimping motor 312 is connected to the second accommodating portion 12 The inner wall shaft is connected.
  • the end of the reel 313 connected to the inner wall shaft of the second accommodating portion 12 can provide support for the end of the reel 313 away from the crimping motor 312 through the shaft.
  • the end of the reel 313 connected with the inner wall shaft of the second accommodating portion 12 swayed, and the end of the reel 313 connected with the inner wall shaft of the second accommodating portion 12 can also be prevented from bending due to gravity.
  • the number of the crimping motors 312 may be two, and the two crimping motors 312 are respectively located on both sides of the reel 313 and are fixedly connected to the two ends of the reel 313 in the circumferential direction of the reel 313.
  • the crimping motor 312 includes a motor body 3121 and a roller 3122.
  • the motor body 3121 is electrically connected to the crimping controller 311, and the motor shaft of the motor body 3121
  • the roller 3122 is fixedly connected to the roller 3122.
  • a groove 31221 is provided on the circumferential surface of the roller 3122 along the axial direction.
  • the inner wall of the drum 313 is provided with a boss 3131 matching the groove 31221. The boss 3131 can be confined in the groove 31221.
  • the roller 3122 fixed on the motor shaft of the motor body 3121 is stuffed into the inner cavity of the reel 313, so that the groove 31221 on the roller 3122 is matched with the boss 3131 in the inner cavity of the reel 313, and the motor is moved by the roller 3122.
  • the torque on the motor shaft of the main body 3121 is transmitted to the reel 313, so that the reel 313 and the motor shaft of the motor main body 3121 can be rotated synchronously, and the reel 313 and the winding motor 312 can be rotated synchronously.
  • the cross section of the boss 3131 provided on the inner wall of the reel 313 can be rectangular or trapezoidal, of course, it can also have other shapes, as long as the torque of the crimping motor 312 can be transmitted, which is not limited in the embodiment of the present application.
  • the number of bosses 3131 provided on the inner wall of the reel 313 may be one or multiple.
  • the number of bosses 3131 is multiple, multiple bosses 3131 may be provided along the circumferential direction of the reel 313.
  • the specific number of the boss 3131 is set according to the torque transmitted by the motor body, as long as it can ensure that the torque of the motor body is transmitted to the reel 313, and the reel 313 has a certain service life. This is not limited.
  • the motor body may be a stepping motor, so that the control of the curling motor 312 by the curling controller 311 can be facilitated.
  • the motor body may also be other motors, as long as it can be easily controlled by the crimping controller 311, which is not limited in the embodiment of the present application.
  • the outer wall of the reel 313 may be provided with a card slot 3132 along the axial direction, and the first end of the screen 32 can be provided with a card strip matching the card slot 3132 (not shown in the figure). ), the clip strip can be limited in the slot 3132 along the radial direction of the reel 313, so that the first end of the screen 32 can be limited in the circumferential direction of the reel 313.
  • the first end of the curtain 32 and the reel 313 can be curled synchronously by the restriction of the clip, so that the curtain 32 can be crimped on the reel 313.
  • the roll 313 can provide a certain pulling force to the first end of the screen 32, which can cooperate with the second end of the screen 32 when it is unfolded, so that the screen 32 is more It is flat, thereby improving the display effect of the screen 32.
  • the cross section of the card slot 3132 and the cross section of the card strip can both have an inverted T-shaped structure.
  • the card strip can be directly inserted into the card slot 3132 along the length of the card slot 3132.
  • the fixed connection between the card bar and the card slot 3132 is realized, so that the first end of the screen 32 can be fastened to the reel 313 conveniently and quickly.
  • cross section of the card slot 3132 and the cross section of the card strip can be both inverted T-shaped or square. Of course, they can also have other shapes, as long as the card slot 3132 can realize the alignment of the card strip.
  • the limit of the circumferential direction of the reel 313 is sufficient, which is not limited in the embodiment of the present application.
  • the depth of the card slot 3132 and the height of the card strip may be equal.
  • the screen 32 can be close to the roll 313, thereby avoiding the curtain 32 from being caught by the clip or the slot 3132 when the height of the clip is greater than or less than the depth of the slot 3132. The phenomenon of shear force at the edge.
  • the outer wall of the reel 313 and the first end of the curtain 32 can also be restricted.
  • the bonding of one end realizes the limitation of the first end of the curtain 32 in the circumferential direction of the reel 313.
  • the second end of the curtain 32 can also be restricted in the circumferential direction of the reel 313 by other means. This is not repeated in the embodiment of the application.
  • the projection screen 3 in addition to the screen 32 that can pass through the opening 121 and unfold under its own tension, can also include a lifting mechanism. In this way, the screen 32 can pass through the opening 121 and be supported by the lifting mechanism. Unfold.
  • the reel structure mentioned in the above embodiment can be as shown in FIG. 6, and the cross section of the card slot 3133 and the cross section of the card strip 331 can both be in an inverted T-shaped structure.
  • the card bar 331 can be directly inserted into the card slot 3133 along the length of the card slot 3133 to limit the card bar 331 through the card slot 3133 to realize the fixed connection between the card bar 331 and the card slot 3133, which can be convenient and quick
  • the first end of the rollable substrate 33 is fixed on the roll 313.
  • cross section of the card slot 3133 and the cross section of the card strip 331 can be both inverted T-shaped or square. Of course, they can also have other shapes, as long as the card slot 3133 can realize the alignment of the card strip.
  • the limit of 331 along the circumferential direction of the reel 313 is sufficient, which is not limited in the embodiment of the present application.
  • the depth of the card slot 3133 and the height of the card bar 331 may be equal.
  • the rollable substrate 33 can be close to the roll 313, thereby avoiding the rollable substrate 33 when the height of the clip 331 is greater than or less than the depth of the groove 3133.
  • the outer wall of the reel 313 can also be used to limit the position of the first end of the roll 313.
  • the lamination and bonding of the first end of the rollable substrate 33 realizes the limitation of the first end of the rollable substrate 33 in the circumferential direction of the roll 313.
  • the second end of the rollable substrate 33 can also be adjusted in other ways.
  • the limit of the circumferential direction of the reel 313 is not repeated in the embodiment of the present application.
  • the optical engine is arranged in the inner cavity of the first accommodating part
  • the crimping mechanism is arranged in the inner cavity of the second accommodating part
  • the first end of the screen is fixedly connected with the crimping mechanism to achieve
  • the integrated design of the optical engine and the screen avoids changes in the relative position between the optical engine and the screen. Since the curling mechanism can control the curtain to be folded to the second accommodating part, and the second end of the curtain can pass through the opening and unfold, the curtain can be folded or unfolded, and the laser projection device can be avoided when it is not in use. The problem of large space.
  • the embodiment of the application determines the vertical distance between the optical engine and the plane of the screen through the transmittance of the optical engine and the width of the display area on the screen, thereby ensuring that the light beam emitted by the optical engine can be completely projected on the display area. , Thereby improving the display effect.
  • the lifting mechanism may include a lifting controller, a lifting motor, and a support frame, the lifting controller is electrically connected to the lifting motor, the first end of the support frame is fixedly connected to the second accommodating portion 12, and the support frame The second end is fixedly connected to the second end of the screen 32.
  • the lifting controller can control the start and stop of the lifting motor, and the lifting motor can adjust the distance between the second end of the support frame and the second accommodating portion 12.
  • the lifting motor can drive the second end of the support frame to rise, and then drive the second end of the curtain 32 to rise. At this time, it can be realized while the curling mechanism 31 controls the reverse rotation of the curtain 32. The unfolding of the curtain 32.
  • the lifting motor drives the second end of the support frame to descend
  • the second end of the curtain 32 can be driven to descend. At this time, the curtain 32 can be retracted while the curling mechanism 31 controls the curtain 32 to rotate forward.
  • the first end of the support frame can be fixed on the outer wall of the second accommodating part 12.
  • the first end of the support frame can also be fixed in the inner cavity of the second accommodating part 12 through the opening 121.
  • the second end of the support frame can be caught in the opening 121 when the curtain 32 is curled, so as to ensure that the curtain 32 can be completely stowed in the second container. It is placed in the portion 12, so as to realize the protection of the curtain 32.
  • the lifting controller may control the lifting motor to rotate forward or reverse to control the rising or falling of the support frame when receiving the control signal sent by the remote controller that is communicatively connected with it.
  • the lifting controller may also be electrically connected with a control button. At this time, a control signal can be sent to the lifting controller through the control button to control the raising or lowering of the support frame through the forward or reverse rotation of the lifting motor.
  • the lifting controller may include a single-chip microcomputer and a signal receiver.
  • the single-chip microcomputer is electrically connected to the signal receiver and the lifting motor. In this way, after the signal receiver receives the control signal, the signal receiver sends the control signal to the single-chip microcomputer, and the single-chip microcomputer is based on the control signal.
  • the control signal controls the forward or reverse rotation of the lifting motor.
  • the lifting controller and the crimping controller 311 may be the same controller.
  • the same controller receives the start signal sent by the remote controller that is in communication with it, it can control the curling motor 312 and the lifting motor to start at the same time based on the start signal.
  • the curling motor 312 The reel 313 is driven to reverse synchronously, and the lifting motor drives the second end of the support frame to rise, so as to realize the unfolding of the curtain 32.
  • the same controller When the laser projection device is turned off, after the same controller receives the shutdown signal sent by the remote controller that is in communication with it, it can control the curling motor 312 and the lifting motor to start at the same time based on the shutdown signal. At this time, the curling motor 312 drives the winding. The cylinder 313 rotates forward synchronously, and the lifting motor drives the second end of the support frame to descend, so as to realize the curling of the curtain 32.
  • the controller when the screen is unfolded, the height of the second end of the curtain 32 that needs to be raised can be pre-designed, and then the running time of the curling motor 312 and the lifting motor can be controlled in advance according to the height, that is, the same
  • the controller receives the start signal, it can automatically control the second end of the screen 32 to be raised to the required height within the running time, so as to realize the full expansion of the screen 32; or when the closing signal is received, during the running time
  • the inner automatically controls the curtain 32 to be curled on the roll 313 to realize the complete retracting of the curtain 32.
  • the same controller can also be manually controlled to realize the full expansion or folding of the curtain 32.
  • the support frame may include a fixed rod, a cross rod, a first lifting component and a second lifting component
  • the fixed rod is fixedly connected to the second accommodating portion 12
  • the cross rod is fixedly connected to the second end of the screen 32
  • the first end of the first lifting component and the first end of the second lifting component are respectively connected to the cross bar
  • the second end of the first lifting component and the second end of the second lifting component are both connected to the fixed rod and the lifting motor
  • the lifting The motor can adjust the distance between the fixed rod and the cross rod through the first lifting component and the second lifting component.
  • the first lifting assembly and the second lifting assembly can be controlled by the lifting motor to adjust the distance between the fixed rod and the crossbar, so as to realize the adjustment of the distance between the crossbar and the second accommodating portion 12, and then the curling mechanism 31 While driving the first end of the curtain 32 to rotate, the curtain 32 can be retracted or unfolded.
  • the fixing rod can be directly fixed on the outer wall of the second accommodating portion 12, of course, it can also be fixed on the inner cavity of the second accommodating portion 12.
  • the first lifting assembly can drive the crossbar to be completely retracted inside the second accommodating part 12 after the curtain 32 is curled, so as to reduce the amount of laser projection equipment.
  • first end of the first lifting assembly and the first end of the second lifting assembly may be connected to the two ends of the crossbar, and the second end of the first lifting assembly and the second end of the second lifting assembly may be respectively connected to the two ends of the crossbar. Connected to both ends of the fixed rod. In this way, when the first lifting assembly and the second lifting assembly are raised and lowered, the supporting force received by the crossbar can be evenly distributed, so as to improve the levelness and stability of the crossbar, and further improve the stability of the support of the crossbar on the screen 32.
  • a sliding rail is provided on the fixed rod
  • the first lifting assembly includes a first support rod and a second sliding block, the first end of the first support rod is connected to the cross rod, and the second end of the first support rod Connected with the second sliding block, the second sliding block is slidably arranged on the sliding rail, and connected with the lifting motor, the lifting motor can drive the second sliding block to slide along the sliding rail to adjust the gap between the first support rod and the fixed rod ⁇ The included angle.
  • the lifting motor can drive the second sliding block to slide along the sliding rail to increase or decrease the angle between the first support rod and the fixed rod, so as to realize the raising or lowering of the first end of the first support rod.
  • the rise or fall of the crossbar can be realized.
  • connection between the first end of the first support rod and the cross bar and the connection between the second end of the first support rod and the second slider can be hinged, of course, it can also be other connection methods, such as shaft pin connection, etc.
  • first end of the first support rod and the crossbar can be rotatable, and the second end of the first support rod and the second slider can be rotatable, the embodiment of the present application does not limit this.
  • the first lifting assembly may further include a first limiting block, the first limiting block is fixed on the sliding rail, and the first limiting block can limit the first sliding block.
  • the first limit block can be fixed at the edge of the sliding rail. In this way, when the first sliding block moves along the sliding rail to the edge of the sliding rail, the Limit to prevent the first sliding block from falling out of the slide rail.
  • the first support rod may be electrically connected to a lifting controller, and the lifting controller can control the first support rod to extend or contract in the length direction.
  • the lift controller can control the first support rod to extend or contract in the length direction, and then adjust the height of the crossbar to adjust the height of the screen 32 .
  • the first support rod may be a jack or the like, as long as it can be extended or shortened by itself.
  • a sliding rail may be provided on the fixed rod
  • the first lifting assembly may include a first lifting rod, a second lifting rod, a first elastic member, a first push-pull rod, and a first sliding block.
  • the first end of the rod and the first end of the second lifting rod are hinged into a V-shaped structure by an elastic member, and the distance between the second end of the first lifting rod and the second end of the second lifting rod can be compressed, the first The second end of the lifting rod is hinged with the cross bar, and the second end of the second lifting rod is hinged with the fixed rod.
  • the first end of the first push-pull rod is hinged with the outer wall of the second lifting rod, the second end of the first push-pull rod is hinged with the first sliding block, and the first sliding block is slidably arranged on the slide rail and connected with the lifting motor ,
  • the lifting motor can drive the first sliding block to slide along the sliding rail.
  • the lifting motor can drive the first sliding block to slide along the sliding rail to drive the second end of the first push-pull rod to move synchronously through the first sliding block.
  • the movement of the second end of the first push-pull rod causes the first push-pull rod and the sliding rail to move synchronously. Increase or decrease the included angle between the first push-pull rod, and then raise or lower the first end of the first push-pull rod to increase or decrease the included angle between the second lifting rod and the slide rail.
  • the angle of the V-shaped structure at the hinged joint between the first end of the second lifting rod and the first end of the first lifting rod will increase or decrease accordingly, thereby making The second end of the first lifting rod is raised or lowered to realize the raising or lowering of the first end of the first lifting assembly.
  • the first elastic member may be a torsion spring. After the first end of the first lifting rod and the first end of the second lifting rod are hinged into a V-shaped structure by the first elastic member, the torsion spring provides elastic force to make the V
  • the opening 121 of the shaped structure has a tendency to open, so that the second end of the first lifting rod has an upward tendency, which in turn can always provide a supporting force for the crossbar to improve the supporting effect of the support frame.
  • the first elastic member may also be other elements, as long as the opening 121 of the V-shaped structure has a tendency to open, which is not limited in the embodiment of the present application.
  • the two ends of the first elastic member can be welded to the outer wall of the first support rod and the outer wall of the second support rod, of course, can also be fixedly connected to the outer wall of the first support rod and the outer wall of the second support rod in other ways As long as the two ends of the elastic member are respectively fixedly connected with the outer wall of the first end of the first lifting rod and the outer wall of the first end of the second lifting rod, this is not limited in the embodiment of the present application.
  • the lifting motor may include a motor body and a lead screw.
  • the lead screw is arranged on the fixed rod, and one end of the lead screw is connected to the motor body.
  • the first sliding block is threadedly connected to the lead screw.
  • the motor body can drive the lead screw. Rotate in the circumferential direction to encourage the first sliding block to slide along the sliding rail in the axial direction of the screw.
  • the motor shaft of the motor body rotates forward or reverse
  • the motor shaft of the motor body drives the lead screw to rotate forward or reverse synchronously
  • the lead screw drives the first slider to move forward or backward along the slide rail, thereby
  • the motor body controls the movement of the first sliding block along the sliding rail.
  • the lead screw can be arranged in the groove 31221 of the slide rail and be threadedly connected with the first sliding block. In this way, the threaded connection between the first sliding block and the lead screw and the sliding of the first sliding block along the sliding rail can be realized at the same time. It can also save space and facilitate installation.
  • the motor body may be a stepping motor, so that it is convenient for the lifting controller to control the lifting motor.
  • the lifting controller can control the forward and reverse rotation of the stepper motor by sending a control signal to the stepper motor, and the stepper motor drives the lead screw to rotate forward and backward to realize the sliding of the first slider along the slide rail. Switching of directions.
  • the lifting motor may be a threaded screw stepping motor, and the motor shaft of the threaded screw stepping motor is directly threaded with the first sliding block, so that the movement of the first sliding block along the sliding rail can be realized.
  • the first lifting assembly may further include a self-lubricating gasket.
  • the self-lubricating gasket may be disposed between the first sliding block and the sliding rail, and can move synchronously with the first sliding block.
  • the self-lubricating gasket can lubricate the first sliding block and the sliding rail, so that the friction between the first sliding block and the sliding rail can be reduced, thereby The moving speed of the first sliding block is stabilized, and the load of the lifting motor can be reduced.
  • the self-lubricating gasket may be a polyoxymethylene resin gasket.
  • the self-lubricating gasket can also be other gaskets, as long as it can lubricate the first sliding block and the sliding rail, which is not limited in the embodiment of the present application.
  • the components and the connection manner of the components included in the second lifting assembly may be the same or similar to the components and the connection manner of the components included in the first lifting assembly described in the first manner. It may be the same or similar to the components included in the first lifting assembly described in the second manner above and the connection manner of the components, which is not limited in the embodiment of the present application.
  • Figure 7 shows a schematic structural diagram of another laser projection device.
  • the laser projection device includes: a storage unit 1, an optical engine 2 and a projection screen 3.
  • the projection screen 3 includes a lifting mechanism 34, a curling mechanism 31 and a screen 32.
  • the accommodating part 1 has a first accommodating part 11 and a second accommodating part 12, the optical engine 2 is arranged in the inner cavity of the first accommodating part 11, the first accommodating part 11 is provided with a light-transmitting area 111, and the optical engine 2 emits light The light beam can pass through the light-transmitting area 111.
  • the curling mechanism 31 is arranged in the inner cavity of the second accommodating portion 12, the first end of the curtain 32 is connected to the curling mechanism 31, the curling mechanism 31 can control the curtain 32 to be retracted to the second accommodating portion 12, and the lifting mechanism 34 is arranged in the second housing portion 12.
  • the second accommodating part 12 On the second accommodating part 12, the second accommodating part 12 is provided with an opening 121.
  • the second end of the curtain 32 passes through the opening 121 and is fixedly connected to the lifting mechanism 34.
  • the lifting mechanism 34 can control the curtain 32 to unfold, and the curtain 32 can be received after being unfolded.
  • the light beam passing through the light-transmitting area 111 the light-transmitting area 111.
  • the optical engine 2 is arranged in the inner cavity of the first accommodating portion 11, the crimping mechanism 31 is arranged in the inner cavity of the second accommodating portion 12, and the first end of the curtain 32 is fixedly connected to the crimping mechanism 31 ,
  • the integrated design of the optical engine 2 and the screen 32 is realized, and the relative position change between the optical engine 2 and the screen 32 is avoided.
  • the curling mechanism 31 is arranged in the second accommodating portion 12, the lifting mechanism 34 is arranged on the second accommodating portion 12, and the curtain 32 is connected to the curling mechanism 31 and the lifting mechanism 34 respectively, so that the curtain 32 can be stowed or retracted. Expand, thereby reducing the space occupied by the projection screen 3 when not in use.
  • the lifting mechanism 34 and the curling mechanism 31 can simultaneously provide support for the curtain 32 and apply a certain force to the curtain 32 to ensure the flatness of the curtain 32 after unfolding.
  • the light beam emitted by the optical engine 2 can pass through the first A light-transmitting area 111 provided in the accommodating portion 11 is projected on the screen 32, thereby realizing the display of the screen.
  • the curling mechanism 31 can drive the first end of the curtain 32 to rotate in the circumferential direction of the curling mechanism 31, while the lifting mechanism 34 drives the second end of the curtain 32 to descend, thereby curling the curtain 32 along the first end.
  • the curling mechanism 31 is used to realize the folding of the curtain 32.
  • the curling mechanism 31 can drive the first end of the curtain 32 to rotate in a reverse direction along the circumferential direction of the curling mechanism 31, while the lifting mechanism 34 drives the second end of the curtain 32 to rise, so that the lifting mechanism 34 supports the curtain 32 to achieve The unfolding of the curtain 32.
  • the clockwise direction may be determined as the forward direction
  • the counterclockwise direction may be determined as the reverse direction.
  • the lifting mechanism 2 may include a lifting controller 341, a lifting motor 342, and a supporting frame 343.
  • the lifting controller 341 is electrically connected to the lifting motor 342, and the first end of the supporting frame 343 is connected to the first end of the supporting frame 343.
  • the two accommodating parts 1 are fixedly connected, and the second end of the support frame 343 is fixedly connected to the second end of the screen 32.
  • the lifting controller 341 can control the start and stop of the lifting motor 342, and the lifting motor 342 can adjust the distance between the second end of the support frame 343 and the second accommodating portion 12.
  • the lifting motor 342 can drive the second end of the support frame 343 to rise, thereby driving the second end of the curtain 32 to rise.
  • the curling mechanism 31 can control the reverse of the curtain 32
  • the curtain 32 is unfolded while rotating.
  • the lifting motor 342 drives the second end of the support frame 343 to descend
  • the second end of the curtain 32 can be driven to descend.
  • the curtain 32 can be retracted while the curling mechanism 31 controls the curtain 32 to rotate forward.
  • the first end of the support frame 343 can be fixed on the outer wall of the second accommodating part 1, of course, the first end of the support frame 343 can also be fixed in the inner cavity of the second accommodating part 12 through the opening 121.
  • the second end of the support frame 343 can be caught at the opening 121 when the curtain 32 is curled, so as to ensure that the curtain 32 can be completely stowed in the second accommodating part 12.
  • the second accommodating part 1 realizes the protection of the curtain 32.
  • the lifting controller 341 can control the lifting motor 342 to rotate forward or reverse to control the rising or falling of the support frame 343 when receiving a control signal sent by a remote controller that is communicatively connected with it.
  • the lifting controller 341 may also be electrically connected with a control button. At this time, a control signal may be sent to the lifting controller 341 through the control button to control the rising or falling of the support frame 343 through the forward or reverse rotation of the lifting motor 342. .
  • the lifting controller 341 may include a single-chip microcomputer and a signal receiver.
  • the single-chip microcomputer is electrically connected to the signal receiver and the lifting motor 342 respectively. In this way, after the signal receiver receives the control signal, the signal receiver sends the control signal to the single-chip microcomputer. Based on the control signal, the forward or reverse rotation of the lifting motor 342 is controlled.
  • the support frame 343 may include a fixing rod 3434, a cross rod 3432, a first lifting assembly 3433, and a second lifting assembly 3434, and the fixing rod 3434 is fixedly connected to the second accommodating portion 12,
  • the cross bar 3432 is fixedly connected to the second end of the curtain 32.
  • the first end of the first lifting assembly 3433 and the first end of the second lifting assembly 3434 are respectively connected to the cross bar 3432.
  • the second end and the first end of the first lifting assembly 3433 are connected to the cross bar 3432.
  • the second ends of the two lifting components 3434 are both connected to the fixed rod 3434 and the lifting motor 342.
  • the lifting motor 342 can adjust the distance between the fixed rod 3434 and the cross bar 3432 through the first lifting component 3433 and the second lifting component 3434.
  • the first lifting assembly 3433 and the second lifting assembly 3434 can be controlled by the lifting motor 342 to adjust the distance between the fixed rod 3434 and the cross bar 3432, so as to realize the adjustment of the distance between the cross bar 3432 and the second accommodating portion 12 , And further, when the curling mechanism 31 drives the first end of the curtain 32 to rotate, the curtain 32 can be stowed or unfolded at the same time.
  • the fixing rod 3434 can be directly fixed on the outer wall of the second accommodating portion 1, of course, it can also be fixed on the inner cavity of the second accommodating portion 12. In this way, when the fixing rod 3434 is fixed in the inner cavity of the second accommodating portion 1, the first lifting assembly 3433 can drive the cross bar 3432 to be completely retracted to the inside of the second accommodating portion 12 after the curtain 32 is curled, so as to reduce the projection The space occupied by the system.
  • first end of the first lifting assembly 3433 and the first end of the second lifting assembly 3434 may be connected to the two ends of the cross bar 3432, while the second end of the first lifting assembly 3433 and the second end of the second lifting assembly 3434 The second end may be connected to both ends of the fixing rod 3434 respectively.
  • a sliding rail 34341 is provided on the fixed rod 3434.
  • the first lifting assembly 3433 includes a first support rod 34336 and a second sliding block 34337.
  • the first end of the first support rod 34336 is connected to The cross bar 3432 is connected, and the second end of the first support bar 34336 is connected with the second sliding block 34337.
  • the second sliding block 34337 is slidably arranged on the slide rail 34341 and connected with the lifting motor 342.
  • the lifting motor 342 can drive the The two sliding blocks 34337 slide along the sliding rail 34341 to adjust the angle between the first support rod 34336 and the fixed rod 3434.
  • the lifting motor 342 can drive the second sliding block 34337 to slide along the sliding rail 34341 to increase or decrease the angle between the first support rod 34336 and the fixed rod 3434, thereby realizing the first support rod 34336.
  • the rise or fall of the end to achieve the rise or fall of the crossbar 3432.
  • connection between the first end of the first support bar 34336 and the cross bar 3432 and the connection between the second end of the first support bar 34336 and the second slider 34337 can be hinged, of course, it can also be other connection methods, such as Axle pin connection, etc., as long as the first end of the first support rod 34336 and the cross bar 3432 can be rotatable, and the second end of the first support rod 34336 and the second slider 34337 can be rotated, the implementation of this application The example does not limit this.
  • the first lifting assembly 3433 may further include a first limiting block 34338, the first limiting block 34338 is fixed on the sliding rail 34341, and the first limiting block 34338 can limit the first sliding block 34335.
  • the first limit block 34338 can be fixed at the edge of the slide rail 34341. In this way, when the first slider 34335 moves along the slide rail 34341 to the edge of the slide rail 34341, it can pass through the set first limit block 34338 The first sliding block 34335 is restricted to prevent the first sliding block 34335 from falling out of the sliding rail 34341.
  • first supporting rod 34336 may be electrically connected to the lifting controller 341, and the lifting controller 341 can control the first supporting rod 34336 to extend or contract in the length direction.
  • the lift controller 341 can control the first support bar 34336 to extend or contract in the length direction, thereby adjusting the height of the cross bar 3432.
  • the first support rod 34336 may be a jack or the like, as long as it can be extended or shortened by itself.
  • a sliding rail 34341 may be provided on the fixed rod 3434, and the first lifting assembly 3433 may include a first lifting rod 34334, a second lifting rod 34332, a first elastic member 34333, and a second lifting rod 34334.
  • the first end of the first lifting rod 34334 and the first end of the second lifting rod 34332 are hinged into a V-shaped structure by an elastic member, and the second end of the first lifting rod 34334 and The distance between the second ends of the second lifting rod 34332 is compressible, the second end of the first lifting rod 34334 is hinged with the cross bar 3432, and the second end of the second lifting rod 34332 is hinged with the fixing rod 3434.
  • the first end of the first push-pull rod 34334 is hinged with the outer wall of the second lifting rod 34332, the second end of the first push-pull rod 34334 is hinged with the first sliding block 34335, and the first sliding block 34335 is slidably arranged on the slide rail 34341 , And connected with the lifting motor 342, the lifting motor 342 can drive the first sliding block 34335 to slide along the sliding rail 34341.
  • the lifting motor 342 can drive the first sliding block 34335 to slide along the sliding rail 34341 to drive the second end of the first push-pull rod 34334 to move synchronously through the first sliding block 34335.
  • the movement of the second end of the first push-pull rod 34334 promotes the movement of the second end of the first push-pull rod 34334.
  • the angle between a push-pull rod 34334 and the slide rail 34341 increases or decreases, so that the first end of the first push-pull rod 34334 rises or falls, so as to realize the angle between the second lift rod 34332 and the slide rail 34341.
  • the angle between the second lifting rod 34332 and the sliding rail 34341 increases or decreases, the first end of the second lifting rod 34332 is hinged with the first end of the first lifting rod 34334
  • the angle of the V-shaped structure will increase or decrease accordingly, so that the second end of the first lifting rod 34334 is raised or lowered, and the first end of the first lifting assembly 3433 is raised or lowered.
  • the first elastic member 34333 may be a torsion spring. After the first end of the first lifting rod 34334 and the first end of the second lifting rod 34332 are hinged into a V-shaped structure by the first elastic member 34333, the torsion spring provides elastic force, In order to make the opening of the V-shaped structure have a tendency to open, so that the second end of the first lifting rod 34334 has an upward tendency, and thus the crossbar 3432 can always be provided with a supporting force to improve the supporting effect of the support frame 343.
  • first elastic member 34333 may also be other elements, as long as the opening of the V-shaped structure has a tendency to open, which is not limited in the embodiment of the present application.
  • the two ends of the first elastic member 34333 can be respectively welded to the outer wall of the first support rod 34336 and the outer wall of the second support rod. Of course, it can also be connected to the outer wall of the first support rod 34336 and the second support rod in other ways.
  • the outer wall is fixedly connected, as long as the two ends of the elastic member are respectively fixedly connected with the outer wall of the first end of the first lifting rod 34334 and the outer wall of the first end of the second lifting rod 34332, which is not limited in the embodiment of the present application. .
  • the lifting motor 342 may include a motor body (not shown in the figure) and a lead screw (not shown in the figure).
  • the lead screw is arranged on the fixed rod 3434, and one end of the lead screw is connected to the motor body.
  • the first slider 34335 is threadedly connected with the lead screw, and the motor body can drive the lead screw to rotate in the circumferential direction to promote the first slider 34335 to slide along the slide rail 34341 in the axial direction of the lead screw.
  • the motor shaft of the motor body rotates forward or reverse
  • the motor shaft of the motor body drives the lead screw to rotate forward or reverse synchronously
  • the lead screw drives the first slider 34335 to move forward or backward along the slide rail 34341
  • the motor body controls the movement of the first sliding block 34335 along the sliding rail 34341.
  • the lead screw can be arranged in the groove of the slide rail 34341 and be threadedly connected with the first sliding block 34335. In this way, the threaded connection between the first sliding block 34335 and the lead screw and the first sliding block 34335 along the sliding rail can be realized at the same time. 34341 sliding, and can also save space, easy to install.
  • the motor body may be a stepping motor, so that it is convenient for the lifting controller 341 to control the lifting motor 342.
  • the lifting controller 341 can control the forward rotation and reverse rotation of the stepping motor by sending a control signal to the stepping motor, and the stepping motor drives the lead screw to rotate forward and backward to realize the sliding of the first slider 34335. Switching of the sliding direction of the rail 34341.
  • the lifting motor 342 may be a threaded screw stepping motor, and the motor shaft of the threaded screw stepping motor is directly threaded with the first sliding block 34335, so that the first sliding block 34335 can be moved along the slide rail. 34341's move.
  • the first lifting assembly 3433 may further include a self-lubricating gasket (not shown in the figure).
  • the self-lubricating gasket may be disposed between the first sliding block 34335 and the sliding rail 34341, and can be connected to the first sliding block 34335 and the sliding rail 34341.
  • the slider 34335 moves synchronously.
  • the self-lubricating gasket can lubricate the first sliding block 34335 and the sliding rail 34341, so that the friction between the first sliding block 34335 and the sliding rail 34341 The force is reduced, so that the moving speed of the first sliding block 34335 can be stabilized, and the load of the lifting motor 342 can be reduced.
  • the self-lubricating gasket may be a polyoxymethylene resin gasket.
  • the self-lubricating gasket can also be other gaskets, as long as it can lubricate the first sliding block 34335 and the sliding rail 34341, which is not limited in the embodiment of the present application.
  • the components and the connection manner of the components included in the second lifting assembly 3434 may be the same or similar to the components and the connection manner of the components included in the first lifting assembly 3433 described in the first manner. Of course, it can also be the same or similar to the components included in the first lifting assembly 3433 described in the second manner above and the connection manner of the components, which is not limited in the embodiment of the present application.
  • the optical engine is arranged in the inner cavity of the first accommodating part
  • the crimping mechanism is arranged in the inner cavity of the second accommodating part
  • the first end of the screen is fixedly connected with the crimping mechanism
  • the integrated design of the optical engine and the screen is realized, and the relative position change between the optical engine and the screen is avoided.
  • the curling mechanism is arranged in the second accommodating part
  • the lifting mechanism is arranged on the second accommodating part.
  • the curtain is connected to the curling mechanism and the lifting mechanism through the curtain to realize the folding or unfolding of the curtain, thereby reducing the shadow of the projection screen. The space occupied when in use.
  • the lifting mechanism and the curling mechanism can provide support for the curtain at the same time, and apply a certain force to the curtain to ensure the flatness of the curtain after unfolding.
  • the light beam emitted by the optical engine can pass through the transparent set of the first accommodating part.
  • the light area is projected on the screen to realize the display of the picture.
  • the provision of a self-lubricating gasket between the first slider and the sliding rail can facilitate reducing the friction between the first slider and the sliding rail, so as to improve the lifting stability of the first lifting assembly

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  • General Physics & Mathematics (AREA)
  • Overhead Projectors And Projection Screens (AREA)

Abstract

一种激光投影设备，包括：收纳部（1）、光学引擎（2）和投影屏幕（3），收纳部（1）具有第一容置部（11）和第二容置部（12），光学引擎（2）设置在第一容置部（11）的内腔，第一容置部（11）设有透光区（111），卷曲机构（31）设置在第二容置部（12）的内腔，幕布（32）的第一端与卷曲机构（31）连接，卷曲机构（31）能够控制幕布（32）收起至第二容置部（12），第二容置部（12）设有开口（121）。

Description

激光投影设备
本申请要求在2019年12月5日提交中国专利局、申请号为201911235824.6、发明名称为“激光投影设备”，以及2019年12月5日提交中国专利局、申请号为201911235821.2，发明名称为“激光投影设备”，以及2019年12月5日提交中国专利局、申请号为201911235893.7，发明名称为“激光投影设备”的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及投影技术领域，特别涉及一种激光投影设备。
背景技术
随着科技的不断发展，激光投影设备越来越多的应用于人们的工作和生活中。其中，激光投影设备主要包括投影主机和投影屏幕，投影主机主要用于出射光束至投影屏幕，投影屏幕用于对投影主机出射的光束进行反射，以在投影屏幕上的显示区域实现画面的显示。其中，投影屏幕上的显示区域是指设置有光学膜片的区域。
相关技术中，在使用激光投影设备进行投影时，可以先将投影屏幕固定在支撑体上，比如墙面，再将投影主机放置在投影屏幕的正前方，以保证投影主机出射的光束能够在投影屏幕的显示区域形成显示画面。
然而，在将投影屏幕固定在支撑体上时，通常会对支撑体进行破坏打孔，且在投影屏幕固定后会持续占据一定空间。另外，由于投影主机独立固定，很容易受外界因素影响，发生位置的移动变化，导致出射的光束可能偏离投影屏幕上的显示区域，或者发生投影画面的畸变。
发明内容
本申请提供了一种激光投影设备，包括：
收纳部，所述收纳部具有第一容置部和第二容置部；
光学引擎，所述光学引擎设置在所述第一容置部的内腔，所述第一容置部设置有透光区，所述光学引擎出射的光束能够透过所述透光区；
投影屏幕，所述投影屏幕包括卷曲机构和幕布；
所述卷曲机构设置在所述第二容置部的内腔，所述幕布的第一端与所述卷曲机构连接，所述卷曲机构能够控制所述幕布收起至所述第二容置部；
所述第二容置部设置有开口，所述幕布的第二端能够穿过所述开口并展开，所述幕布展开后能够接收透过所述透光区的光束。
附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所需要使用的 附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本申请实施例提供的一种激光投影设备的结构示意图；
图2A是本申请实施例提供的一种激光投影设备的爆炸结构示意图；
图2B是本申请实施例提供的又一种激光投影设备的爆炸结构示意图；
图3A是本申请实施例提供的一种卷曲机构的结构示意图；
图3B是本申请实施例提供的又一种卷曲机构的结构示意图；
图4是本申请实施例提供的一种卷筒的剖面结构示意图；
图5是本申请实施例提供的一种滚轮的结构示意图；
图6是本申请实施例提供的一种卷筒的结构示意图；
图7是本申请实施例提供的另一种激光投影设备的爆炸结构示意图；
图8是本申请实施例提供的一种升降机构的结构示意图；
图9是本申请实施例提供的一种支撑架的结构示意图；
图10是本申请实施例提供的另一种支撑架的结构示意图。
附图标记：
1：收纳部；2：光学引擎；3：投影屏幕；
11：第一容置部；12：第二容置部；
31：卷曲机构；32：幕布；33：可卷曲基板；34：升降机构；
111：透光区；121：开口；311：卷曲控制器；312：卷曲电机；313：卷筒；
3121：电机本体；3122：滚轮；3131：凸台；3132：卡槽；31221：凹槽；
341：升降控制器；342：升降电机；343：支撑架；
3434：固定杆；3432：横杆；3433：第一升降组件；3434：第二升降组件；
34341：滑轨；34334：第一升降杆；34332：第二升降杆；34333：第一弹性件；34334：第一推拉杆；34335：第一滑块；34336：第一支撑杆；34337：第二滑块；34338：第一限位块。
具体实施方式
为使本申请的目的、技术方案和优点更加清楚，下面将结合附图对本申请实施方式作进一步地详细描述。
图1示例了本申请实施例的一种激光投影设备的结构示意图，图2A示例了本申请实施例的一种激光投影设备的爆炸结构示意图。如图1和图2A所示，激光投影设备包括：收纳部1、光学引擎2和投影屏幕3，投影屏幕3包括卷曲机构31和幕布32。收纳部1具有第一容置部11和第二容置部12，光学引擎2设置在第一容置部11的内腔，第一容置部11设置有透光区111，光学引擎2出射的光束能够透过透光区111。卷曲机构31设 置在第二容置部12的内腔，幕布32的第一端与卷曲机构31连接，卷曲机构31能够控制幕布32收起至第二容置部12，第二容置部12设置有开口121，幕布32的第二端能够穿过开口121并展开，幕布32展开后能够接收透过透光区111的光束。
本申请实施例中，将光学引擎2设置在第一容置部11的内腔，卷曲机构31设置在第二容置部12的内腔，幕布32的第一端和卷曲机构31固定连接，实现了光学引擎2与幕布32的一体化设计，避免了光学引擎2与幕布32之间相对位置发生的变化。由于卷曲机构31能够控制幕布32收起至所述第二容置部12，且幕布32的第二端能够穿过开口121并展开，从而可以实现幕布32的收起或者展开，避免了激光投影设备在不使用时占据空间大的问题。在幕布32展开后，光学引擎2出射的光束能够穿过第一容置部11设置的透光区111投射在幕布32上，从而实现对画面的显示。
实际实现过程中，卷曲机构31带动幕布32的第一端沿卷曲机构31的圆周方向正向转动，从而将幕布32沿第一端卷曲在卷曲机构31上，以实现幕布32的收起。卷曲机构31带动幕布32的第一端沿卷曲机构31的圆周方向反向转动，此时幕布32的第二端能够穿过开口121并展开。其中，可以将顺时针方向确定为正向，将逆时针方向确定为反向。
其中，光学引擎2可以为超短焦光学引擎2，当然，光学引擎2也可以为短焦光学引擎2或长焦光学引擎2。
在一些实施例中，光学引擎2可以包括光源、光机系统、镜头、DMD(Digital Micromirror Device，数字微镜阵列)芯片、控制电路板、音频处理系统、音响、散热系统和散热器，光源和镜头均与光机系统固定连接，DMD芯片设置在光机系统内，DMD芯片、音频处理系统和散热系统分别与控制电路板电连接，音频处理系统还与音响电连接，散热系统还与散热器电连接。
这样，光源出射的光束至光机系统内的DMD芯片上，控制电路板通过对DMD芯片进行控制以对出射至DMD芯片上的光束进行调制，并通过调制后的光束携带控制电路板输出的图像信息出射至镜头，进而通过镜头出射光束至投影屏幕3包括的幕布32进行显示。另外，控制电路板控制音频处理系统对控制电路板输出的音频信息进行处理，并将处理后的音频信息通过音响外放。在对图像信息显示以及对音频信息外放时，控制电路板可以控制散热系统驱动散热器进行散热，以避免高温影响各器件的功能。
在一些实施例中，透光区111的中心点与幕布32展开时所在的平面之间的垂直距离等于光学引擎2的投射比与幕布32上的显示区域的宽度之间的比值，显示区域的宽度是指显示区域沿开口121的长度上的尺寸值。
其中，幕布32上的显示区域沿与开口121的长度方向的长度可以小于或等于幕布32的宽度。透光区111的中心点可以是指光学引擎2出射的光束的中心点，也即是光学引擎2的出光口位于透光区111的中心区域。幕布32的宽度是指幕布32上与开口121的长度方向同向的边的长度。
其中，由于投射比是光学引擎2本身的性能参数，因此光学引擎2的投射比与选取的光学引擎2有关，也即是选取不同的光学引擎2，则投射比不同，进而透光区111的中心点与幕布32展开时所在的平面之间的垂直距离也不相同。
这样，在实际设置过程中，可以通过光学引擎2的投射比与显示区域的宽度计算出透光区111的中心点与幕布32展开时所在平面的垂直距离，进而将该垂直距离确定为透光区111的中心点与开口121的沿长度方向的中心线之间的垂直距离，从而可以保证光学引擎2出射的光束能够完整的投影在幕布32的显示区域。
进一步的，透光区111的中心点到开口121的两端之间的距离可以相等。这样，可以使光学引擎2出射的光束形成的投影位于幕布32上的显示区域的中心区域。
需要说明的是，设置幕布32时为了使形成的投影刚好与显示区域重合，以提高显示效果，幕布32沿显示区域的宽度方向上的一条边的中点与开口121沿长度方向的中点重合，且显示区域位于幕布32的中心区域。
在一些实施例中，如图2A所示，收纳部1可以呈T形结构，且第一容置部11的体积小于第二容置部12的体积。
其中，第一容置部11与第二容置部12之间可以是可拆卸式连接，当然第一容置部11与第二容置部12之间也可以为不可拆卸式连接，也即是第一容置部11与第二容置部12之间可以为一体式连接。
需要说明的是，当第一容置部11与第二容置部12之间可拆卸连接时，若光学引擎2出现故障，则可以将第一容置部11拆卸下来，进而将设置有光学引擎2的第一容置部11整体送去维修，若投影屏幕3包括的卷曲机构31出现故障，则可以将第二容置部12拆卸下来，进而将设置有卷曲机构31的第二容置部12整体送去维修，从而避免将整个激光投影设备送去维修。
在一些实施例中，第一容置部11与第二容置部12可以通过伸缩杆连接，且伸缩杆可以沿自身的轴向伸缩，也即是随着伸缩杆的伸缩，可以调整第一容置部11上的透光区111的中心点与第二容置部12上开口121之间的垂直距离，进而调整光学引擎2出射光束的中心点与幕布32展开时所在平面之间的投影距离，以调整光学引擎2出射的光束在幕布32上显示区域的显示画面的大小。另外，由于第一容置部11上的透光区111的中心点与第二容置部12上开口121之间的垂直距可调，从而在保证显示画面大小的情况下，该激光投影设备可以适应于不同投射比的光学引擎2。
幕布可以包括软布与光学膜片，这样，可以将软布的第一侧面与光学膜片的背部层叠粘接，从而可以通过软布对光学膜片进行保护。当然，幕布也可以仅包括光学膜片，光学膜片中还包括可卷曲基材层，可卷曲基材层用于对光学膜片进行支撑。
光学膜片可以为多层光学结构层，光学结构层沿着投影影像光束的出射方向依次包括：基材层，扩散层，菲涅尔透镜层，反射层。
其中基材层也可以设置在扩散层和菲涅尔透镜层之间。
上述软布的长度大于光学膜片的长度，光学膜片的长度可设置为用于展示预设尺寸的画面的长度。在超短焦投影系统中，由于光线斜向上出射，因此，幕布的下方会存在部分区域不会接收到光线，这部分区域称为“offset”区域。在具体应用时，可将offset区域直至到达卷轴的区域都设置为软布。
在另一些实施例中，图2B所示，激光投影设备包括：收纳部1、光学引擎2和投影 屏幕3，投影屏幕包括：卷曲机构31、可卷曲基板33和幕布32。收纳部1具有第一容置部11和第二容置部12，光学引擎2设置在第一容置部11的内腔，第一容置部11设置有透光区111，光学引擎2出射的光束能够透过透光区111。卷曲机构31设置在第二容置部12的内腔，可卷曲基板33的第一端与卷曲机构31固定连接，幕布32层叠粘接在可卷曲基板33的第一侧面，卷曲机构31能够控制可卷曲基板33收起至第二容置部12，第二容置部12设置有开口121，可卷曲基板33的第二端能够穿过开口121并展开，可卷曲基板33展开后，幕布32能够接收透过透光区111的光束。
本申请实施例中，将光学引擎2设置在第一容置部11的内腔，卷曲机构31设置在第二容置部12的内腔，可卷曲基板33的第一端和卷曲机构31固定连接，幕布32与可卷曲基板33的第一侧面层叠粘接，实现了光学引擎2与幕布32的一体化设计，避免了光学引擎2与幕布32之间相对位置发生的变化，通过可卷曲基板33对幕布32的支撑保证了幕布32展开后的平整度。由于卷曲机构31能够控制可卷曲基板33收起至第二容置部12，且可卷曲基板33的第二端能够穿过开口121并展开，从而可以实现可卷曲基板33的收起或者展开，进而实现了幕布32的收起或者展开，避免了激光投影设备在不使用时占据空间大的问题。在幕布32展开后，光学引擎2出射的光束能够穿过第一容置部11设置的透光区111投射在幕布32上，从而实现对画面的显示。
实际实现过程中，卷曲机构31可以带动可卷曲基板33的第一端沿卷曲机构31的圆周方向正向转动，从而将可卷曲基板33沿第一端卷曲在卷曲机构31上，以实现可卷曲基板33的收起，进而实现幕布32的收起。另外，卷曲机构31可以带动可卷曲基板33的第一端沿卷曲机构31的圆周方向反向转动，此时可卷曲基板33的第二端能够穿过开口121并展开，进而实现幕布32的展开。其中，可以将顺时针方向确定为正向，将逆时针方向确定为反向。
以及，在一些具体实施例中，幕布32可以包括软布与光学膜片，这样，可以将软布的第一侧面与光学膜片的背部层叠粘接，将软布的第二侧面与可卷曲基板33的第一侧面粘接，从而可以通过软布对光学膜片进行保护，以防止可卷曲基板33对光学膜片造成破坏。当然，幕布32也可以仅包括光学膜片，且光学膜片直接层叠粘接在可卷曲基板33上，只要可以通过幕布33实现画面的显示即可，本申请实施例对此不作限定。
在一些实施例中，如图2B所示，可卷曲基板33可以呈卷帘门结构，以便于可卷曲基板33的卷曲，同时在可卷曲基板33展开时，可以通过可卷曲基板33的支撑作用保证幕布32的平整度。
其中，卷帘门状的可卷曲基板33的数量可以为两个，且每个可卷曲基板33的长度可以大于或等于幕布32的长度，两个可卷曲基板33的宽度之和可以小于幕布32的宽度。这样，将两个呈卷帘门结构的可卷曲基板33可以分别沿长度方向固定在幕布32的两侧，以实现对幕布32的两侧的支撑，从而可以防止幕布32的中间位置在幕布32的第一端与第二端的拉力的作用下发生卷曲和褶皱，以提高幕布32的显示效果。
需要说明的是，幕布32的长度是指幕布32上幕布32的第二端的展开方向相同的边的长度，幕布32的宽度是指幕布32上与幕布32的第二端的展开方向垂直的边的长度。
另外，两个呈卷帘门结构的可卷曲基板33均可固定在幕布32的正面，当然两个可卷曲基板33也均可固定在幕布32的背面，本申请实施例对此不作限定。当两个可卷曲基板33固定在幕布32的正面时，幕布32上的显示区域与两个可卷曲基板33的固定区域之间不存在重叠部分。
当然，如图2B所示，卷帘门状的可卷曲基板33的数量也可以为一个，且该可卷曲基板33的长度可以大于幕布32的长度，该可卷曲基板33的宽度可以大于或等于幕布32的宽度。这样，可以将幕布32的背面固定在可卷曲基板33的第一侧面，以通过可卷曲基板33实现对幕布32的全部面积的支撑，从而可以避免幕布32的中间部分在幕布32的第一端与第二端的拉力的作用下发生卷曲和褶皱而降低幕布32的显示效果。其中，幕布32的背面是指幕布32展开时远离光学引擎2的一面。
在另一些实施例中，可卷曲基板33可以在展开时呈光滑的平面状结构。其中，展开时呈平面状的可卷曲基板33的尺寸与上述描述的呈卷帘门状的一个可卷曲基板33的尺寸可以相同或相似，本申请实施例对此不做限定。
其中，如图2B所示，展开时呈光滑的平面状的可卷曲基板33可以是合成布，合成布可以直接和光学膜片层叠粘接。当然展开时呈光滑的平面状的可卷曲基板33也可以是其他材质，比如钢质薄片等，本申请实施例对此不做限定。
其中，在展开时呈光滑的平面状的可卷曲基板33的硬度可以介于60-70洛氏硬度之间。这样，可以便于在卷曲机构31未对可卷曲基板33卷曲时，可卷曲基板33可以在自身的张力作用下穿过开口121并展开，以实现对幕布32展开；还可以便于沿卷曲机构31的圆周方向卷曲，以便于带动固定在可卷曲基板33上的幕布32同步卷曲，从而实现幕布32的收起或者展开。
其中，展开时呈光滑的平面状的可卷曲基板33的平面度可以基于光学引擎2的投射比进行人为确定，比如光学引擎2的投射比为0.25时，可卷曲基板33的平面度可以是0.5/10000。
在一些实施例中，可卷曲基板33的第二侧面可以设置有防护涂层，这样，在卷曲机构31带动可卷曲基板33进行卷曲时，防护涂层可以避免幕布32的受光面与可卷曲基板33的直接接触，从而可以避免可卷曲基板33划伤幕布32的受光面，从而提高幕布32的使用期限。
其中，防护涂层可以是特氟龙涂层，也可以是泡棉类软性材质的涂层，只要能实现对幕布32的隔离保护即可，本申请实施例对此不作限定。
本申请实施例中，如图3A所示，卷曲机构31可以包括：卷曲控制器311、卷曲电机312和卷筒313，卷曲控制器311与卷曲电机312电连接，卷曲电机312与卷筒313的端部固定连接，幕布32的第一端与卷筒313固定连接。卷曲控制器311能够控制卷曲电机312的启停，卷曲电机312能够带动卷筒313旋转。
其中，卷曲控制器311可以在接收到与之通信连接的遥控器发送的控制信号时，控制卷曲电机312正向转动或者反向转动。当然卷曲控制器311也可以电连接有控制按键，此时可以通过控制按键向卷曲控制器311发送控制信号，以控制卷曲电机312正向转动或者 反向转动。
其中，卷曲控制器311可以包括单片机和信号接收器，单片机分别与信号接收器和卷曲电机312电连接，这样，在信号接收器接收到控制信号之后，信号接收器将控制信号发送至单片机，单片机基于该控制信号控制卷曲电机312正转或反转。
其中，卷曲电机312与卷筒313的端部可以沿圆周方向限位，且卷曲电机312与卷筒313可以沿轴向移动，从而可以使卷筒313能够跟随卷曲电机312同步旋转，同时实现卷曲电机312与卷筒313的可拆卸。
在一些实施例中，继续如图3A所示，卷曲电机312的数量可以是一个，这样卷曲电机312的电机轴可以和卷筒313的一端轴连接，卷筒313上远离卷曲电机312的一端与第二容置部12的内壁轴连接。
这样，在卷曲电机312带动卷筒313同步转动时，卷筒313上与第二容置部12的内壁轴连接的一端可以通过轴为卷筒313上远离卷曲电机312的一端提供支撑，以避免卷筒313上与第二容置部12的内壁轴连接的一端发生晃动，并且还可以防止卷筒313上与第二容置部12的内壁轴连接的一端因重力作用而发生弯曲。
在另一些实施例中，卷曲电机312的数量可以是两个，两个卷曲电机312分别位于卷筒313的两侧，且与卷筒313的两端沿卷筒313的圆周方向固定连接。
这样，可以便于通过两个卷曲电机312同时带动卷筒313转动，以为卷筒313的两端提供同样的扭矩，从而可以避免卷筒313的两端因扭矩不同而导致速度不同，进而可以使幕布32匀速收起，以提高投影屏幕3的稳定性。
在一些实施例中，卷筒313的内壁沿轴向可以设置有楔槽(图中未示出)，卷曲电机312的电机轴上可以设置有楔块(图中未示出)，楔块能够沿卷筒313的圆周方向卡紧在楔槽内，从而可以实现卷曲电机312的电机轴与卷筒313沿圆周方向的固定，进而卷筒313与卷曲电机312的电机轴可以实现同步转动。
其中，卷筒313的内壁设置的楔槽的截面可以是矩形或梯形等，当然也可以是其它形状，只要能实现对卷曲电机312的扭矩的传递即可，本申请实施例对此不作限定。
其中，卷筒313的内壁设置的楔槽的数量可以是一个，也可以是多个，当楔槽的数量为多个时，多个楔槽可以沿卷筒313的圆周方向设置。楔槽的具体数量依据卷曲电机312所传递的扭矩的不同进行设置，只要能保证将卷曲电机312的扭矩传递至卷筒313，且该卷筒313具有一定的使用寿命即可，本申请实施例对此不作限定。
需要说明的是，上述实施例中，卷曲电机312可以是步进电机，这样，可以便于卷曲控制器311对卷曲电机312的控制。示例的，卷曲控制器311可以通过发送控制信号至步进电机，以控制步进电机的正转和反转，进而带动卷筒313正转和反转。
当然，卷曲电机312也可以是其他电机，比如直流减速电机等，只要能够便于被卷曲控制器311控制即可，本申请实施例对此不作限定。
以及，对应于图2B，图3B示出了另一种卷曲机构结构示意图。如图3B所示，卷曲机构31可以包括：卷曲控制器311、卷曲电机312和卷筒313，卷曲控制器311与卷曲电机312电连接，卷曲电机312与卷筒313的端部固定连接，可卷曲基板33的第一端与卷 筒313固定连接。卷曲控制器311能够控制卷曲电机312的启停，卷曲电机312能够带动卷筒313旋转。
其中，卷曲控制器311可以在接收到与之通信连接的遥控器发送的控制信号时，控制卷曲电机312正向转动或者反向转动。当然卷曲控制器311也可以电连接有控制按键，此时可以通过控制按键向卷曲控制器311发送控制信号，以控制卷曲电机312正向转动或者反向转动。
其中，卷曲控制器311可以包括单片机和信号接收器，单片机分别与信号接收器和卷曲电机312电连接，这样，在信号接收器接收到控制信号之后，信号接收器将控制信号发送至单片机，单片机基于该控制信号控制卷曲电机312正转或反转。
其中，卷曲电机312与卷筒313的端部可以沿圆周方向限位，且卷曲电机312与卷筒313可以沿轴向移动，从而可以使卷筒313能够跟随卷曲电机312同步旋转，同时实现卷曲电机33与卷筒313的可拆卸。
在一些实施例中，卷曲电机312的数量可以是一个，这样卷曲电机312的电机轴可以和卷筒313的一端轴连接，卷筒313上远离卷曲电机312的一端与第二容置部12的内壁轴连接。
这样，在卷曲电机312带动卷筒313同步转动时，卷筒313上与第二容置部12的内壁轴连接的一端可以通过轴为卷筒313上远离卷曲电机312的一端提供支撑，以避免卷筒313上与第二容置部12的内壁轴连接的一端发生晃动，并且还可以防止卷筒313上与第二容置部12的内壁轴连接的一端因重力作用而发生弯曲。
在另一些实施例中，卷曲电机312的数量可以是两个，两个卷曲电机312分别位于卷筒313的两侧，且与卷筒313的两端沿卷筒313的圆周方向固定连接。
这样，可以便于通过两个卷曲电机312同时带动卷筒313转动，以为卷筒313的两端提供同样的扭矩，从而可以避免卷筒313的两端因扭矩不同而导致速度不同，进而可以使可卷曲基板33与幕布32一并匀速收起，以提高投影屏幕的稳定性。
在一些实施例中，结合如图3A、图3B、图4和图5所示，卷曲电机312包括电机本体3121和滚轮3122，电机本体3121与卷曲控制器311电连接，电机本体3121的电机轴与滚轮3122固定连接，滚轮3122的圆周面上沿轴向设置有凹槽31221，卷筒313的内壁设置有与凹槽31221匹配的凸台3131，凸台3131能够限位在凹槽31221内。
这样，将固定在电机本体3121的电机轴上的滚轮3122塞进卷筒313的内腔，以使滚轮3122上的凹槽31221与卷筒313内腔的凸台3131配合，通过滚轮3122将电机本体3121的电机轴上的扭矩传递至卷筒313，从而可以实现卷筒313与电机本体3121的电机轴的同步转动，进而实现卷筒313与卷曲电机312的同步转动。
其中，卷筒313的内壁设置的凸台3131的截面可以是矩形或梯形，当然也可以是其它形状，只要能实现对卷曲电机312的扭矩的传递即可，本申请实施例对此不作限定。
其中，卷筒313的内壁设置的凸台3131的数量可以是一个，也可以是多个，当凸台3131的数量为多个时，多个凸台3131可以沿卷筒313的圆周方向设置。凸台3131的具体数量依据电机本体所传递的扭矩的不同进行设置，只要能保证将电机本体的扭矩传递至 卷筒313，且该卷筒313具有一定的使用寿命即可，本申请实施例对此不作限定。
需要说明的是，电机本体可以是步进电机，这样，可以便于卷曲控制器311对卷曲电机312的控制。当然，电机本体也可以是其他电机，只要能够便于被卷曲控制器311控制即可，本申请实施例对此不作限定。
还需要说明的是，除了上述两种实施例能够实现卷曲电机312的电机轴与卷筒313的同步转动外，还可以通过其他结构实现卷曲电机312的电机轴与卷筒313的同步转动，本申请实施例对此不作限定。
在一些实施例中，如图4所示，卷筒313的外壁沿轴向可以设置有卡槽3132，幕布32的第一端可以设置有与卡槽3132匹配的卡条(图中未示出)，卡条能够沿卷筒313的径向限位在卡槽3132内，从而可以实现幕布32的第一端沿卷筒313的圆周方向的限位。
这样，在卷筒313转动时，可以通过卡条的限位，实现幕布32的第一端与卷筒313的同步卷曲，从而可以将幕布32卷曲在卷筒313上。并且由于卡条321的限位，可以使卷筒313对幕布32的第一端提供一定的拉力，该拉力可以在和幕布32的第二端展开时的作用下相互配合，使幕布32更为平整，从而提高幕布32的显示效果。
其中，卡槽3132的截面和卡条的截面可以均呈倒T形结构，这样，在卡槽3132与卡条固定连接时，可以直接将卡条沿卡槽3132的长度方向插入卡槽3132中，以通过卡槽3132对卡条进行限位，实现卡条与卡槽3132的固定连接，从而可以方便快捷的将幕布32的第一端固定在卷筒313上。
需要说明的是，卡槽3132的截面与卡条的截面除了可以均呈倒T形之外，也可以均呈方形，当然，也可以均呈其它形状，只要卡槽3132能实现对卡条沿卷筒313的圆周方向的限位即可，本申请实施例对此不作限定。
其中，卡槽3132的深度与卡条的高度可以相等。这样，在卷筒313转动带动幕布32卷曲时，幕布32可以紧贴卷筒313上，从而避免了在卡条的高度大于或小于卡槽3132的深度时，幕布32受到卡条或卡槽3132的边缘的剪切力的现象。
需要说明的是，除了可以通过卡槽3132与卡条的配合实现对幕布32的第一端沿卷筒313的圆周方向的限位之外，还可以通过卷筒313的外壁与幕布32的第一端的粘接，实现对幕布32的第一端沿卷筒313的圆周方向的限位，当然也可以通过其他方式实现对幕布32的第二端沿卷筒313的圆周方向的限位，本申请实施例对此不作赘述。
本申请实施例中，幕布32除了可以在自身的张力作用下穿过开口121并展开外，投影屏幕3还可以包括升降机构，这样，幕布32可以在升降机构的支撑作用下穿过开口121并展开。
上述实施例中提到的卷筒结构，可以如图6所示，卡槽3133的截面和卡条331的截面可以均呈倒T形结构，这样，在卡条331与卡槽3133固定连接时，可以直接将卡条331沿卡槽3133的长度方向插入卡槽3133中，以通过卡槽3133对卡条331进行限位，实现卡条331与卡槽3133的固定连接，从而可以方便快捷的将可卷曲基板33的第一端固定在卷筒313上。
需要说明的是，卡槽3133的截面与卡条331的截面除了可以均呈倒T形之外，也可 以均呈方形，当然，也可以均呈其它形状，只要卡槽3133能实现对卡条331沿卷筒313的圆周方向的限位即可，本申请实施例对此不作限定。
其中，卡槽3133的深度与卡条331的高度可以相等。这样，在卷筒313转动带动可卷曲基板33卷曲时，可卷曲基板33可以紧贴卷筒313上，从而避免了在卡条331的高度大于或小于卡槽3133的深度时，可卷曲基板33受到卡条331或卡槽3133的边缘的剪切力的现象。
需要说明的是，除了可以通过卡槽3133与卡条331的配合实现对可卷曲基板33的第一端沿卷筒313的圆周方向的限位之外，还可以通过卷筒313的外壁与可卷曲基板33的第一端的层叠粘接，实现对可卷曲基板33的第一端沿卷筒313的圆周方向的限位，当然也可以通过其他方式实现对可卷曲基板33的第二端沿卷筒313的圆周方向的限位，本申请实施例对此不作赘述。
本申请上述一个或多个实施例中，将光学引擎设置在第一容置部的内腔，卷曲机构设置在第二容置部的内腔，幕布的第一端和卷曲机构固定连接，实现了光学引擎与幕布的一体化设计，避免了光学引擎与幕布之间相对位置发生的变化。由于卷曲机构能够控制幕布收起至所述第二容置部，且幕布的第二端能够穿过开口并展开，从而可以实现幕布的收起或者展开，避免了激光投影设备在不使用时占据空间大的问题。在幕布展开后，光学引擎出射的光束能够穿过第一容置部设置的透光区投射在幕布上，从而实现对画面的显示。另外，本申请实施例通过光学引擎的透射比和幕布上显示区域的宽度，确定了光学引擎与幕布所在的平面之间的垂直距离，从而保证了光学引擎出射的光束能够完全投影在显示区域上，从而提高了显示效果。
以及，在一些实施例中，升降机构可以包括升降控制器、升降电机和支撑架，升降控制器与升降电机电连接，支撑架的第一端与第二容置部12固定连接，支撑架的第二端与幕布32的第二端固定连接。升降控制器能够控制升降电机的启停，升降电机能够调整支撑架的第二端与第二容置部12之间的距离。
这样，在升降控制器控制升降电机启动之后，升降电机可以带动支撑架的第二端上升，进而带动幕布32的第二端上升，此时可以在卷曲机构31控制幕布32反向旋转的同时实现幕布32的展开。另外，在升降电机带动支撑架的第二端下降时，可以带动幕布32的第二端下降，此时可以在卷曲机构31控制幕布32正向旋转的同时实现幕布32的收起。
其中，支撑架的第一端可以固定在第二容置部12的外壁上，当然，支撑架的第一端也可以穿过开口121固定在第二容置部12的内腔。当支撑架的第一端固定在第二容置部12的内腔时，支撑架的第二端能够在幕布32卷曲时卡在开口121处，以保证幕布32可以完全收起在第二容置部12内，从而实现对幕布32的保护。
其中，升降控制器可以在接收到与之通信连接的遥控器发送的控制信号时，控制升降电机正向转动或者反向转动，以控制支撑架的上升或者下降。当然，升降控制器也可以电连接有控制按键，此时可以通过控制按键向升降控制器发送控制信号，以通过升降电机的正向转动或者反向转动控制支撑架的上升或者下降。
其中，升降控制器可以包括单片机和信号接收器，单片机分别与信号接收器和升降电 机电连接，这样，在信号接收器接收到控制信号之后，信号接收器将控制信号发送至单片机，单片机基于该控制信号控制升降电机的正转或反转。
需要说明的是，当卷曲机构31的结构如上述所述时，升降控制器与卷曲控制器311可以是同一个控制器。这样，在启动激光投影设备时，该同一个控制器接收到与之通信连接的遥控器发送的启动信号之后，可以基于该启动信号控制卷曲电机312与升降电机同时启动，此时，卷曲电机312带动卷筒313同步反转，升降电机带动支撑架的第二端上升，以实现幕布32的展开。在关闭激光投影设备时，该同一个控制器接收到与之通信连接的遥控器发送的关闭信号之后，可以基于该关闭信号控制卷曲电机312与升降电机同时启动，此时，卷曲电机312带动卷筒313同步正转，升降电机带动支撑架的第二端下降，以实现幕布32卷曲。
还需要说明的是，在屏幕实现展开时，可以预先设计好幕布32的第二端需要升高的高度，进而根据该高度预先控制卷曲电机312和升降电机的运行时长，也即是该同一个控制器在接收到启动信号时，可以在该运行时长内自动控制幕布32的第二端升高至需要的高度，以实现幕布32的完全展开；或者在接收到关闭信号时，在该运行时长内自动控制幕布32卷曲在卷筒313上，以实现幕布32的完全收起。当然，也可以通过人为控制该同一个控制器，以实现幕布32的完全展开或收起。
在一些实施例中，支撑架可以包括固定杆、横杆、第一升降组件和第二升降组件，固定杆与第二容置部12固定连接，横杆与幕布32的第二端固定连接，第一升降组件的第一端和第二升降组件的第一端分别与横杆连接，第一升降组件的第二端和第二升降组件的第二端均与固定杆和升降电机连接，升降电机能够通过第一升降组件和第二升降组件调整固定杆与横杆之间的距离。
这样，可以通过升降电机控制第一升降组件和第二升降组件调整固定杆与横杆之间的距离，以实现横杆与第二容置部12之间的距离的调整，进而在卷曲机构31带动幕布32的第一端转动的同时实现幕布32的收起或者展开。
其中，固定杆可以直接固定在第二容置部12的外壁上，当然也可以固定在第二容置部12的内腔。这样，当固定杆固定在第二容置部12的内腔时，幕布32卷曲后第一升降组件可以带动横杆完全收起至第二容置部12的内部，以减小激光投影设备所占用的空间。
进一步地，第一升降组件的第一端和第二升降组件的第一端可以分别连接在横杆的两端，同时第一升降组件的第二端和第二升降组件的第二端可以分别连接在固定杆的两端。这样，在第一升降组件和第二升降组件升降时，可以使横杆所受到的支撑力分布均匀，以提升横杆的水平度和稳定性，进而提升横杆对幕布32支撑的稳定性。
在一些实施例中，固定杆上设置有滑轨，第一升降组件包括第一支撑杆和第二滑块，第一支撑杆的第一端与横杆连接，第一支撑杆的第二端与第二滑块连接，第二滑块可滑动的设置在滑轨上，且与升降电机连接，升降电机能够带动第二滑块沿滑轨滑动，以调整第一支撑杆与固定杆之间的夹角。
这样，升降电机可以带动第二滑块沿滑轨滑动，以使第一支撑杆与固定杆之间的夹角增大或减小，从而实现第一支撑杆的第一端的上升或者下降，进而实现横杆的上升或者下 降。
其中，第一支撑杆的第一端与横杆的连接和第一支撑杆的第二端与第二滑块的连接均可以为铰接，当然，也可以为其他连接方式，比如轴销连接等，只要能实现第一支撑杆的第一端与横杆的可旋转，以及第一支撑杆的第二端与第二滑块的可旋转即可，本申请实施例对此不作限定。
其中，第一升降组件还可以包括第一限位块，第一限位块固定在滑轨上，第一限位块能够对第一滑块进行限位。示例的，第一限位块可以固定在滑轨的边缘处，这样，在第一滑块沿滑轨移动至滑轨的边缘时，可以通过设置的第一限位块对第一滑块进行限位，以防止第一滑块从滑轨上脱出。
进一步地，第一支撑杆可以与升降控制器电连接，升降控制器能够控制第一支撑杆沿长度方向伸长或缩短。这样，在第一滑块移动使第一支撑杆垂直于横杆之后，可以通过升降控制器控制第一支撑杆沿长度方向伸长或缩短，进而调整横杆的高度，以调整幕布32的高度。示例地，第一支撑杆可以为千斤顶等，只要能够实现自身的伸长或者缩短即可。
在另一些实施例中，固定杆上可以设置有滑轨，第一升降组件可以包括第一升降杆、第二升降杆、第一弹性件、第一推拉杆和第一滑块，第一升降杆的第一端与第二升降杆的第一端通过弹性件铰接为V形结构，且第一升降杆的第二端与第二升降杆的第二端之间的距离可压缩，第一升降杆的第二端与横杆铰接，第二升降杆的第二端与固定杆铰接。第一推拉杆的第一端与第二升降杆的外壁铰接，第一推拉杆的第二端与第一滑块铰接，第一滑块可滑动的设置在滑轨上，且与升降电机连接，升降电机能够带动第一滑块沿滑轨滑动。
这样，升降电机可以带动第一滑块沿滑轨滑动，以通过第一滑块带动第一推拉杆的第二端同步移动，第一推拉杆的第二端的移动促使第一推拉杆与滑轨之间的夹角增大或缩小，进而使第一推拉杆的第一端上升或下降，以实现第二升降杆与滑轨之间的夹角的增大或缩小，之后，随着第二升降杆与滑轨之间的夹角的增大或缩小，第二升降杆的第一端与第一升降杆的第一端铰接处的V形结构的角度会相应增大或缩小，进而使第一升降杆的第二端上升或下降，实现第一升降组件的第一端的上升或下降。
其中，第一弹性件可以为扭转弹簧，在第一升降杆的第一端与第二升降杆的第一端通过第一弹性件铰接为V形结构之后，扭转弹簧提供弹力，以使该V形结构的开口121具有张开的趋势，从而使第一升降杆的第二端具有向上的趋势，进而可以为横杆始终提供支撑力，以提高支撑架的支撑效果。
当然，第一弹性件也可以为其他元件，只要能够使V形结构的开口121具有张开的趋势即可，本申请实施例对此不作限定。
其中，第一弹性件的两端可以分别与第一支撑杆的外壁和第二支撑杆的外壁焊接，当然，也可以通过其他方式与第一支撑杆的外壁和第二支撑杆的外壁固定连接，只要实现弹性件的两端分别与第一升降杆的第一端的外壁与第二升降杆的第一端的外壁的固定连接即可，本申请实施例对此不作限定。
在一些实施例中，升降电机可以包括电机本体和丝杠，丝杠设置在固定杆上，且丝杠的一端与电机本体连接，第一滑块与丝杠螺纹连接，电机本体能够带动丝杠沿圆周方向旋 转，以促使第一滑块在丝杠的轴向上沿滑轨滑动。
这样，在电机本体的电机轴正转或反转时，电机本体的电机轴带动丝杠同步正转或反转，继而丝杠带动第一滑块沿滑轨正向移动或反向移动，从而实现电机本体对第一滑块沿滑轨移动的控制。
其中，丝杠可以设置在滑轨的凹槽31221中，且与第一滑块螺纹连接，这样，可以同时实现第一滑块与丝杠的螺纹连接和第一滑块沿滑轨的滑动，并且还可以节省空间，便于安装。
其中，电机本体可以是步进电机，这样，可以便于升降控制器对升降电机的控制。示例的，升降控制器可以通过发送控制信号至步进电机，以控制步进电机的正转和反转，步进电机带动丝杠正转和反转，以实现第一滑块沿滑轨滑动方向的切换。
在另一些实施例中，升降电机可以是螺纹丝杆步进电机，该螺纹丝杆步进电机的电机轴直接与第一滑块螺纹连接，从而可以实现第一滑块沿滑轨的移动。
在一些实施例中，第一升降组件还可以包括自润滑垫片，自润滑垫片可以设置在第一滑块与滑轨之间，且能够与第一滑块同步移动。
这样，在第一滑块沿滑轨移动时，自润滑垫片可以对第一滑块与滑轨起到润滑作用，以使第一滑块与滑轨之间的摩擦力减小，从而可以使第一滑块的移动速度稳定，并可以减小升降电机的负荷。
其中，自润滑垫片可以为聚甲醛树脂垫片。当然，自润滑垫片也可以为其他垫片，只要能对第一滑块与滑轨起到润滑作用即可，本申请实施例对此不作限定。
需要说明的是，本申请实施例中，第二升降组件包括的构件和构件的连接方式可以与上述第一种方式描述的第一升降组件包括的构件和构件的连接方式相同或相似，当然也可以与上述第二种方式描述的第一升降组件包括的构件和构件的连接方式相同或相似，本申请实施例对此不做限定。
图7示出了另一种激光投影设备结构示意图，如图所示，，激光投影设备包括：收纳部1、光学引擎2和投影屏幕3，投影屏幕3包括升降机构34、卷曲机构31和幕布32。收纳部1具有第一容置部11和第二容置部12，光学引擎2设置在第一容置部11的内腔，第一容置部11设置有透光区111，光学引擎2出射的光束能够透过透光区111。卷曲机构31设置在第二容置部12的内腔，幕布32的第一端与卷曲机构31连接，卷曲机构31能够控制幕布32收起至第二容置部12，升降机构34设置在第二容置部12上，第二容置部12设置有开口121，幕布32的第二端穿过开口121与升降机构34固定连接，升降机构34能够控制幕布32展开，幕布32展开后能够接收透过透光区111的光束。
本申请实施例中，将光学引擎2设置在第一容置部11的内腔，将卷曲机构31设置在第二容置部12的内腔，幕布32的第一端与卷曲机构31固定连接，实现了光学引擎2与幕布32的一体化设计，避免了光学引擎2与幕布32之间相对位置发生的变化。将卷曲机构31设置在第二容置部12内，将升降机构34设置在第二容置部12上，通过幕布32分别与卷曲机构31和升降机构34连接，实现了幕布32的收起或展开，从而减小了投影屏幕3不使用时所占的空间。在幕布32展开后，升降机构34和卷曲机构31可以同时为幕 布32提供支撑，并对幕布32施加一定的力，以保证幕布32展开后的平整度，光学引擎2出射的光束能够穿过第一容置部11设置的透光区111投射在幕布32上，从而实现对画面的显示。
实际实现过程中，卷曲机构31可以带动幕布32的第一端沿卷曲机构31的圆周方向正向转动，同时升降机构34带动幕布32的第二端下降，从而将幕布32沿第一端卷曲在卷曲机构31上，以实现幕布32的收起。另外，卷曲机构31可以带动幕布32的第一端沿卷曲机构31的圆周方向反向转动，同时升降机构34带动幕布32的第二端上升，从而通过升降机构34对幕布32的支撑，以实现幕布32的展开。其中，可以将顺时针方向确定为正向，将逆时针方向确定为反向。
本申请实施例中，如图8所示，升降机构2可以包括升降控制器341、升降电机342和支撑架343，升降控制器341与升降电机342电连接，支撑架343的第一端与第二容置部1固定连接，支撑架343的第二端与幕布32的第二端固定连接。升降控制器341能够控制升降电机342的启停，升降电机342能够调整支撑架343的第二端与第二容置部12之间的距离。
这样，在升降控制器341控制升降电机342启动之后，升降电机342可以带动支撑架343的第二端上升，进而带动幕布32的第二端上升，此时可以在卷曲机构31控制幕布32反向旋转的同时实现幕布32的展开。另外，在升降电机342带动支撑架343的第二端下降时，可以带动幕布32的第二端下降，此时可以在卷曲机构31控制幕布32正向旋转的同时实现幕布32的收起。
其中，支撑架343的第一端可以固定在第二容置部1的外壁上，当然，支撑架343的第一端也可以穿过开口121固定在第二容置部12的内腔。当支撑架343的第一端固定在第二容置部12的内腔时，支撑架343的第二端能够在幕布32卷曲时卡在开口121处，以保证幕布32可以完全收起在第二容置部1内，从而实现对幕布32的保护。
其中，升降控制器341可以在接收到与之通信连接的遥控器发送的控制信号时，控制升降电机342正向转动或者反向转动，以控制支撑架343的上升或者下降。当然，升降控制器341也可以电连接有控制按键，此时可以通过控制按键向升降控制器341发送控制信号，以通过升降电机342的正向转动或者反向转动控制支撑架343的上升或者下降。
其中，升降控制器341可以包括单片机和信号接收器，单片机分别与信号接收器和升降电机342电连接，这样，在信号接收器接收到控制信号之后，信号接收器将控制信号发送至单片机，单片机基于该控制信号控制升降电机342的正转或反转。
在一些实施例中，如图8所示，支撑架343可以包括固定杆3434、横杆3432、第一升降组件3433和第二升降组件3434，固定杆3434与第二容置部12固定连接，横杆3432与幕布32的第二端固定连接，第一升降组件3433的第一端和第二升降组件3434的第一端分别与横杆3432连接，第一升降组件3433的第二端和第二升降组件3434的第二端均与固定杆3434和升降电机342连接，升降电机342能够通过第一升降组件3433和第二升降组件3434调整固定杆3434与横杆3432之间的距离。
这样，可以通过升降电机342控制第一升降组件3433和第二升降组件3434调整固定 杆3434与横杆3432之间的距离，以实现横杆3432与第二容置部12之间的距离的调整，进而在卷曲机构31带动幕布32的第一端转动的同时实现幕布32的收起或者展开。
其中，固定杆3434可以直接固定在第二容置部1的外壁上，当然也可以固定在第二容置部12的内腔。这样，当固定杆3434固定在第二容置部1的内腔时，幕布32卷曲后第一升降组件3433可以带动横杆3432完全收起至第二容置部12的内部，以减小投影系统所占用的空间。
进一步地，第一升降组件3433的第一端和第二升降组件3434的第一端可以分别连接在横杆3432的两端，同时第一升降组件3433的第二端和第二升降组件3434的第二端可以分别连接在固定杆3434的两端。这样，在第一升降组件3433和第二升降组件3434升降时，可以使横杆3432所受到的支撑力分布均匀，以提升横杆3432的水平度和稳定性，进而提升横杆3432对幕布4支撑的稳定性。
在一些实施例中，固定杆3434上设置有滑轨34341，如图9所示，第一升降组件3433包括第一支撑杆34336和第二滑块34337，第一支撑杆34336的第一端与横杆3432连接，第一支撑杆34336的第二端与第二滑块34337连接，第二滑块34337可滑动的设置在滑轨34341上，且与升降电机342连接，升降电机342能够带动第二滑块34337沿滑轨34341滑动，以调整第一支撑杆34336与固定杆3434之间的夹角。
这样，升降电机342可以带动第二滑块34337沿滑轨34341滑动，以使第一支撑杆34336与固定杆3434之间的夹角增大或减小，从而实现第一支撑杆34336的第一端的上升或者下降，进而实现横杆3432的上升或者下降。
其中，第一支撑杆34336的第一端与横杆3432的连接和第一支撑杆34336的第二端与第二滑块34337的连接均可以为铰接，当然，也可以为其他连接方式，比如轴销连接等，只要能实现第一支撑杆34336的第一端与横杆3432的可旋转，以及第一支撑杆34336的第二端与第二滑块34337的可旋转即可，本申请实施例对此不作限定。
其中，第一升降组件3433还可以包括第一限位块34338，第一限位块34338固定在滑轨34341上，第一限位块34338能够对第一滑块34335进行限位。示例的，第一限位块34338可以固定在滑轨34341的边缘处，这样，在第一滑块34335沿滑轨34341移动至滑轨34341的边缘时，可以通过设置的第一限位块34338对第一滑块34335进行限位，以防止第一滑块34335从滑轨34341上脱出。
进一步地，第一支撑杆34336可以与升降控制器341电连接，升降控制器341能够控制第一支撑杆34336沿长度方向伸长或缩短。这样，在第一滑块34335移动使第一支撑杆34336垂直于横杆3432之后，可以通过升降控制器341控制第一支撑杆34336沿长度方向伸长或缩短，进而调整横杆3432的高度，以调整幕布32的高度。示例地，第一支撑杆34336可以为千斤顶等，只要能够实现自身的伸长或者缩短即可。
在另一些实施例中，如图10所示，固定杆3434上可以设置有滑轨34341，第一升降组件3433可以包括第一升降杆34334、第二升降杆34332、第一弹性件34333、第一推拉杆34334和第一滑块34335，第一升降杆34334的第一端与第二升降杆34332的第一端通过弹性件铰接为V形结构，且第一升降杆34334的第二端与第二升降杆34332的第二端 之间的距离可压缩，第一升降杆34334的第二端与横杆3432铰接，第二升降杆34332的第二端与固定杆3434铰接。第一推拉杆34334的第一端与第二升降杆34332的外壁铰接，第一推拉杆34334的第二端与第一滑块34335铰接，第一滑块34335可滑动的设置在滑轨34341上，且与升降电机342连接，升降电机342能够带动第一滑块34335沿滑轨34341滑动。
这样，升降电机342可以带动第一滑块34335沿滑轨34341滑动，以通过第一滑块34335带动第一推拉杆34334的第二端同步移动，第一推拉杆34334的第二端的移动促使第一推拉杆34334与滑轨34341之间的夹角增大或缩小，进而使第一推拉杆34334的第一端上升或下降，以实现第二升降杆34332与滑轨34341之间的夹角的增大或缩小，之后，随着第二升降杆34332与滑轨34341之间的夹角的增大或缩小，第二升降杆34332的第一端与第一升降杆34334的第一端铰接处的V形结构的角度会相应增大或缩小，进而使第一升降杆34334的第二端上升或下降，实现第一升降组件3433的第一端的上升或下降。
其中，第一弹性件34333可以为扭转弹簧，在第一升降杆34334的第一端与第二升降杆34332的第一端通过第一弹性件34333铰接为V形结构之后，扭转弹簧提供弹力，以使该V形结构的开口具有张开的趋势，从而使第一升降杆34334的第二端具有向上的趋势，进而可以为横杆3432始终提供支撑力，以提高支撑架343的支撑效果。
当然，第一弹性件34333也可以为其他元件，只要能够使V形结构的开口具有张开的趋势即可，本申请实施例对此不作限定。
其中，第一弹性件34333的两端可以分别与第一支撑杆34336的外壁和第二支撑杆的外壁焊接，当然，也可以通过其他方式与第一支撑杆34336的外壁和第二支撑杆的外壁固定连接，只要实现弹性件的两端分别与第一升降杆34334的第一端的外壁与第二升降杆34332的第一端的外壁的固定连接即可，本申请实施例对此不作限定。
在一些实施例中，升降电机342可以包括电机本体(图中未示出)和丝杠(图中未示出)，丝杠设置在固定杆3434上，且丝杠的一端与电机本体连接，第一滑块34335与丝杠螺纹连接，电机本体能够带动丝杠沿圆周方向旋转，以促使第一滑块34335在丝杠的轴向上沿滑轨34341滑动。
这样，在电机本体的电机轴正转或反转时，电机本体的电机轴带动丝杠同步正转或反转，继而丝杠带动第一滑块34335沿滑轨34341正向移动或反向移动，从而实现电机本体对第一滑块34335沿滑轨34341移动的控制。
其中，丝杠可以设置在滑轨34341的凹槽中，且与第一滑块34335螺纹连接，这样，可以同时实现第一滑块34335与丝杠的螺纹连接和第一滑块34335沿滑轨34341的滑动，并且还可以节省空间，便于安装。
其中，电机本体可以是步进电机，这样，可以便于升降控制器341对升降电机342的控制。示例的，升降控制器341可以通过发送控制信号至步进电机，以控制步进电机的正转和反转，步进电机带动丝杠正转和反转，以实现第一滑块34335沿滑轨34341滑动方向的切换。
在另一些实施例中，升降电机342可以是螺纹丝杆步进电机，该螺纹丝杆步进电机的 电机轴直接与第一滑块34335螺纹连接，从而可以实现第一滑块34335沿滑轨34341的移动。
在一些实施例中，第一升降组件3433还可以包括自润滑垫片(图中未示出)，自润滑垫片可以设置在第一滑块34335与滑轨34341之间，且能够与第一滑块34335同步移动。
这样，在第一滑块34335沿滑轨34341移动时，自润滑垫片可以对第一滑块34335与滑轨34341起到润滑作用，以使第一滑块34335与滑轨34341之间的摩擦力减小，从而可以使第一滑块34335的移动速度稳定，并可以减小升降电机342的负荷。
其中，自润滑垫片可以为聚甲醛树脂垫片。当然，自润滑垫片也可以为其他垫片，只要能对第一滑块34335与滑轨34341起到润滑作用即可，本申请实施例对此不作限定。
需要说明的是，本申请实施例中，第二升降组件3434包括的构件和构件的连接方式可以与上述第一种方式描述的第一升降组件3433包括的构件和构件的连接方式相同或相似，当然也可以与上述第二种方式描述的第一升降组件3433包括的构件和构件的连接方式相同或相似，本申请实施例对此不做限定。
本申请上述一个或多个实施例中，将光学引擎设置在第一容置部的内腔，将卷曲机构设置在第二容置部的内腔，幕布的第一端与卷曲机构固定连接，实现了光学引擎与幕布的一体化设计，避免了光学引擎与幕布之间相对位置发生的变化。将卷曲机构设置在第二容置部内，将升降机构设置在第二容置部上，通过幕布分别与卷曲机构和升降机构连接，实现了幕布的收起或展开，从而减小了投影屏幕不使用时所占的空间。在幕布展开后，升降机构和卷曲机构可以同时为幕布提供支撑，并对幕布施加一定的力，以保证幕布展开后的平整度，光学引擎出射的光束能够穿过第一容置部设置的透光区投射在幕布上，从而实现对画面的显示。另外，在第一滑块与滑轨之间设置自润滑垫片，可以便于减小第一滑块与滑轨之间的摩擦，以提高第一升降组件的升降的稳定性
以上所述仅为本申请的说明性实施例，并不用以限制本申请，凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (16)

  1. 一种激光投影设备，其特征在于，所述激光投影设备包括：
    收纳部，所述收纳部具有第一容置部和第二容置部；
    光学引擎，所述光学引擎设置在所述第一容置部的内腔，所述第一容置部设置有透光区，所述光学引擎出射的光束能够透过所述透光区；
    投影屏幕，所述投影屏幕包括卷曲机构和幕布；
    所述卷曲机构设置在所述第二容置部的内腔，所述幕布的第一端与所述卷曲机构连接，所述卷曲机构能够控制所述幕布收起至所述第二容置部；
    所述第二容置部设置有开口，所述幕布的第二端能够穿过所述开口并展开，所述幕布展开后能够接收透过所述透光区的光束。
  2. 如权利要求1所述的激光投影设备，其特征在于，所述透光区的中心点与所述幕布展开时所在的平面之间的垂直距离等于所述光学引擎的投射比与所述幕布上的显示区域的宽度之间的比值，所述显示区域的宽度是指所述显示区域沿所述开口的长度上的尺寸值。
  3. 如权利要求1所述的激光投影设备，其特征在于，所述收纳部呈T形结构，且所述第一容置部的体积小于所述第二容置部的体积。
  4. 如权利要求1所述的激光投影设备，其特征在于，所述卷曲机构包括：卷曲控制器、卷曲电机和卷筒；
    所述卷曲控制器与所述卷曲电机电连接，所述卷曲电机与所述卷筒的端部固定连接，所述幕布的第一端与所述卷筒固定连接；
    所述卷曲控制器能够控制所述卷曲电机的启停，所述卷曲电机能够带动所述卷筒旋转。
  5. 如权利要求4所述的激光投影设备，其特征在于，所述卷曲电机包括电机本体和滚轮；
    所述电机本体与所述卷曲控制器电连接，所述电机本体的电机轴与滚轮固定连接；
    所述滚轮的圆周面上沿轴向设置有凹槽，所述卷筒的内壁设置有与所述凹槽匹配的凸台，所述凸台能够限位在所述凹槽内。
  6. 如权利要求1所述的激光投影设备，其特征在于，所述升降机构包括升降控制器、升降电机和支撑架；
    所述升降控制器与所述升降电机电连接，所述支撑架的第一端与所述第二容置部固定连接，所述支撑架的第二端与所述幕布的第二端固定连接；
    所述升降控制器能够控制所述升降电机的启停，所述升降电机能够调整所述支撑架的 第二端与所述第二容置部之间的距离。
  7. 如权利要求6所述的激光投影设备，其特征在于，所述支撑架包括固定杆、横杆、第一升降组件和第二升降组件；
    所述固定杆与所述第二容置部固定连接，所述横杆与所述幕布的第二端固定连接，所述第一升降组件的第一端和所述第二升降组件的第一端分别与所述横杆连接，所述第一升降组件的第二端和所述第二升降组件的第二端均与所述固定杆和所述升降电机连接，所述升降电机能够通过所述第一升降组件和所述第二升降组件调整所述固定杆与所述横杆之间的距离。
  8. 如权利要求7所述的激光投影设备，其特征在于，所述固定杆上设置有滑轨，所述第一升降组件包括第一升降杆、第二升降杆、第一弹性件、第一推拉杆和第一滑块；
    所述第一升降杆的第一端与所述第二升降杆的第一端通过所述第一弹性件铰接为V形结构，且所述第一升降杆的第二端与所述第二升降杆的第二端之间的距离可压缩，所述第一升降杆的第二端与所述横杆铰接，所述第二升降杆的第二端与所述固定杆铰接；
    所述第一推拉杆的第一端与所述第二升降杆的外壁铰接，所述第一推拉杆的第二端与所述第一滑块铰接，所述第一滑块可滑动的设置在所述滑轨上，且与所述升降电机连接，所述升降电机能够带动所述第一滑块沿所述滑轨滑动。
  9. 如权利要求8所述的激光投影设备，其特征在于，所述升降电机包括电机本体和丝杠；
    所述丝杠设置在所述固定杆上，且所述丝杠的一端与所述电机本体连接，所述第一滑块与所述丝杠螺纹连接，所述电机本体能够带动所述丝杠沿圆周方向旋转，以促使所述第一滑块在所述丝杠的轴向上沿所述滑轨滑动。
  10. 如权利要求7所述的激光投影设备，其特征在于，所述固定杆上设置有滑轨，所述第一升降组件包括第一支撑杆和第二滑块；
    所述第一支撑杆的第一端与所述横杆连接，所述第一支撑杆的第二端与所述第二滑块连接，所述第二滑块可滑动的设置在所述滑轨上，且与所述升降电机连接，所述升降电机能够带动所述第二滑块沿所述滑轨滑动，以调整所述第一支撑杆与所述固定杆之间的夹角。
  11. 如权利要求10所述的激光投影设备，其特征在于，所述第一支撑杆与所述升降控制器电连接，所述升降控制器能够控制所述第一支撑杆沿长度方向伸长或缩短。
  12. 如权利要求1所述的激光投影设备，其特征在于，所述设备还包括，可卷曲基板，所述幕布设置于所述可卷曲基板上。
  13. 如权利要求12所述的激光投影设备，其特征在于，所述可卷曲基板的硬度介于60-70洛氏硬度之间。
  14. 如权利要求12所述的激光投影设备，其特征在于，所述可卷曲基板的侧面设置有防护涂层。
  15. 如权利要求1所述的激光投影设备，其特征在于，所述收纳部呈T形结构，且所述第一容置部的体积小于所述第二容置部的体积。
  16. 如权利要求1所述的激光投影设备，其特征在于，所述光学引擎为超短焦光学引擎。
PCT/CN2020/134061 2019-12-05 2020-12-04 激光投影设备 WO2021110158A1 (zh)

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JP2006139116A (ja) * 2004-11-12 2006-06-01 Olympus Corp 可搬型防滴スクリーン装置
CN102455586A (zh) * 2010-10-22 2012-05-16 崔定楠 座地升降投影幕
CN204065650U (zh) * 2014-04-01 2014-12-31 天津市宝晶投影器材有限公司 一种便携式投影幕
CN206115131U (zh) * 2016-09-26 2017-04-19 Tcl集团股份有限公司 幕布伸缩装置
CN206473061U (zh) * 2016-11-18 2017-09-08 Tcl集团股份有限公司 投影电视柜
CN208173035U (zh) * 2018-04-08 2018-11-30 山东女子学院 一种便携式小提琴教学训练投影仪

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JP2006139116A (ja) * 2004-11-12 2006-06-01 Olympus Corp 可搬型防滴スクリーン装置
CN102455586A (zh) * 2010-10-22 2012-05-16 崔定楠 座地升降投影幕
CN204065650U (zh) * 2014-04-01 2014-12-31 天津市宝晶投影器材有限公司 一种便携式投影幕
CN206115131U (zh) * 2016-09-26 2017-04-19 Tcl集团股份有限公司 幕布伸缩装置
CN206473061U (zh) * 2016-11-18 2017-09-08 Tcl集团股份有限公司 投影电视柜
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