CN218350688U

CN218350688U - Laser projection device

Info

Publication number: CN218350688U
Application number: CN202222486044.2U
Authority: CN
Inventors: 宋强
Original assignee: Qingdao Hisense Laser Display Co Ltd
Current assignee: Qingdao Hisense Laser Display Co Ltd
Priority date: 2022-09-19
Filing date: 2022-09-19
Publication date: 2023-01-20
Anticipated expiration: 2032-09-19

Abstract

The application discloses laser projection equipment belongs to the projection display field. The laser projection apparatus includes: a housing, a plurality of casters, and a locking assembly. Through the intracavity that holds in the casing set up chucking spare, after laser projection equipment's altitude mixture control finishes, through the removal that the handle spare drove chucking spare with the casing in the inner wall butt that holds the chamber to locking the connecting rod in the truckle. Therefore, when the projection equipment is used, the clamping piece integrated in the accommodating cavity cannot be touched by mistake to move. In addition, through the chucking effect of chucking spare, even the truckle body is touched by the mistake, the truckle body takes place the pivoted probability also lower. So, guaranteed the chucking effect of chucking spare to the truckle for the high distance between the truckle body that is used for supporting the casing and the casing can not change. The projection equipment can not generate the bad phenomenon of inclination on the whole, and further the display effect of the picture projected on the laser projection screen is better.

Description

Laser projection device

Technical Field

The application relates to the field of projection display, in particular to laser projection equipment.

Background

With the continuous development of science and technology, laser projection systems are increasingly applied to the work and life of people. The laser projection system mainly comprises: laser projection equipment, projection screen and TV bench. The laser projection equipment emits light beams to the projection screen, and the projection screen receives the light beams to realize the display of pictures.

Currently, laser projection devices typically include: the device comprises a shell and a plurality of casters connected with the shell. The casing can be supported on the television cabinet through a plurality of casters, and the distance between the casing and the television cabinet can be adjusted by rotating the casters so as to adjust the position of the picture projected on the projection screen. In order to lock the rotation of the caster, a lock nut connected to the caster is generally provided outside the housing.

However, when the laser projection apparatus is used, the locking nut is easily touched, so that the caster is easily rotated after the locking nut fails to lock the caster, and the display effect of the picture projected on the projection screen is poor.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides laser projection equipment. The problem that the caster of laser projection equipment among the prior art is touched by mistake and very easily takes place to rotate can be solved, technical scheme is as follows:

in one aspect, a laser projection apparatus is provided, the laser projection apparatus comprising:

a housing having a receiving cavity;

a plurality of casters, the casters comprising: the connecting rod is movably connected with the shell, one part of the connecting rod is positioned in the accommodating cavity, the other part of the connecting rod is positioned outside the accommodating cavity, and the part of the connecting rod, which is positioned outside the accommodating cavity, is fixedly connected with the caster body;

a locking assembly, the locking assembly comprising: the clamping piece is positioned in the accommodating cavity and is movably connected with the part, positioned in the accommodating cavity, of the connecting rod, one part of the handle piece is positioned in the accommodating cavity, and the other part of the handle piece is positioned outside the accommodating cavity;

wherein the handle piece is configured to: the clamping piece is driven to move along the axial direction of the connecting rod.

The beneficial effects brought by the technical scheme provided by the embodiment of the application at least comprise:

a laser projection device may include: a housing, a plurality of casters, and a locking assembly. Through the intracavity setting chucking spare that holds in the casing, after laser projection equipment's altitude mixture control finishes, through the removal that the handle spare drove chucking spare with the inner wall butt that holds the chamber in with the casing to the connecting rod locking in the truckle. Therefore, when the laser projection equipment is used, the clamping piece integrated in the accommodating cavity cannot be touched by mistake to move. In addition, through the chucking effect of chucking spare, even the truckle body is touched by the mistake, the truckle body takes place the pivoted probability also lower. So, guaranteed the chucking effect of chucking spare to the truckle for the high distance between the truckle body that is arranged in supporting the casing among the laser projection equipment and the casing can not change. Therefore, the laser projection equipment cannot generate the bad phenomenon of inclination on the whole, and the display effect of the picture projected on the laser projection screen by the laser projection equipment is better.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a laser projection apparatus provided in an embodiment of the present application;

FIG. 2 is a partial cross-sectional view of a laser projection device provided by an embodiment of the present application;

FIG. 3 is a schematic partial structural diagram of a laser projection apparatus according to an embodiment of the present disclosure;

FIG. 4 is a schematic view of the mounting of the handle member to the housing shown in FIG. 3;

FIG. 5 is a schematic view illustrating an installation of an adjusting lever and a sliding chute according to an embodiment of the present disclosure;

FIG. 6 is a schematic view of a clamp provided in an embodiment of the present application;

FIG. 7 is a schematic structural diagram of a handle member provided in an embodiment of the present application;

FIG. 8 is a schematic diagram illustrating the effect of the clamping member abutting against the inner wall of the accommodating cavity according to the embodiment of the present application;

FIG. 9 is a schematic diagram illustrating the separation of a retainer from the inner wall of a receiving cavity according to an embodiment of the present application;

FIG. 10 is a schematic view of a retainer in contact with an inner wall of a receiving cavity of a housing according to an embodiment of the present application;

FIG. 11 is a schematic view of another embodiment of a retainer;

fig. 12 is a schematic structural diagram of a laser projection system according to an embodiment of the present application.

With the above figures, there are shown specific embodiments of the present application, which will be described in more detail below. These drawings and written description are not intended to limit the scope of the inventive concepts in any manner, but rather to illustrate the inventive concepts to those skilled in the art by reference to specific embodiments.

Detailed Description

To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a laser projection apparatus provided in an embodiment of the present application, and fig. 2 is a partial cross-sectional view of the laser projection apparatus provided in the embodiment of the present application. The laser projection apparatus 000 may include: a housing 100, a plurality of casters 200, and a locking assembly 300.

The housing 100 in the laser projection apparatus 000 may have a receiving chamber 101.

The caster 200 in the laser projection apparatus 000 may include: the connecting rod 202 can be movably connected with the shell 100, one part of the connecting rod 202 can be positioned in the accommodating cavity 101 in the shell 100, and the other part of the connecting rod 202 can be positioned outside the accommodating cavity 101 in the shell 100. The portion of the connection rod 202 outside the receiving cavity 101 in the housing 100 may be fixedly connected to the caster body 201. In the present application, the connecting rod 202 of the caster 200 may be screwed with the housing 100 to achieve the movable connection of the connecting rod 202 with the housing 100. As an example, the laser projection device 000 generally has four corners, the number of the casters 200 in the laser projection device 000 may be two, and the number of the corresponding locking assemblies 300 may be two. In other possible implementations, the number of the casters 200 in the laser projection apparatus 000 may be four, four casters 200 may be respectively located at four corners of the laser projection apparatus 000, and the number of the corresponding locking assemblies 300 may also be four.

The locking assembly 300 in the laser projection device 000 may include: a clasp 301 and a handle piece 302. The clamping member 301 may be located in the accommodating cavity 101 of the housing 100 and may be movably connected to a portion of the connecting rod 202 located in the accommodating cavity 101. A portion of the grip member 302 may be located within the receiving cavity 101 in the housing 100 and another portion of the grip member 302 may be located outside the receiving cavity 101. The portion of the handle member 302 located in the receiving cavity 101 of the housing 100 can be coupled with the retainer 301 of the locking assembly 300. It should be noted that a plurality of locking assemblies 300 may also share one handle member 302, which is not specifically limited in the embodiments of the present application.

Wherein the handle member 302 in the locking assembly 300 may be configured to: bringing the retainer 301 to move in the axial direction of the connecting rod 202.

For example, when commissioning the laser projection device 000, first, the user may appropriately lift the housing 100 in the laser projection device 000; then, the chucking member 301 is moved on the connecting rod 202 by the handle member 302, and the chucking member 301 is separated from the inner wall of the accommodating chamber 101 in the housing 100; thereafter, it is ensured that the grip member 302 does not move (i.e., it is ensured that the retainer does not move relative to the connecting rod), while a force is applied to the connecting rod 202, causing the connecting rod 202 to move relative to the housing 100. Namely, the ratio of the portion of the connecting rod 202 in the caster 200 located inside the accommodating chamber 101 in the housing 100 to the portion located outside the accommodating chamber 101 is adjusted; then, the clamping piece 301 is driven by the handle piece 302 to move on the connecting rod 202, and the clamping piece 301 is abutted with the inner wall of the accommodating cavity 101 in the shell 100; finally, the laser projection device 000 is placed on a television cabinet in the laser projection system, so that the plurality of casters 200 are in contact with the cabinet surface of the television cabinet, and thus the adjustment of the distance between the laser projection device and the television cabinet (specifically, the height adjustment between the casing and the caster body in the laser projection device) can be completed.

In the embodiment of the present application, by providing the chucking member 301 in the accommodation chamber 101 in the housing 100, after the height adjustment of the laser projection apparatus 000 is completed, the chucking member 301 is moved on the connecting rod 202 by the handle member 302 to abut against the inner wall of the accommodation chamber 101 in the housing 100, so as to lock the connecting rod 202 in the caster 200. Thus, the clamping member 301 integrated in the accommodating cavity 101 can not be touched by mistake and can not move when the laser projection device 000 is used. In addition, the possibility that the caster body 201 is rotated is low even if the caster body 201 is erroneously touched by the clamping action of the clamp 301. Thus, the clamping action of the clamping piece 301 on the caster 200 is ensured, so that the height distance between the caster body 201 of the housing 100 for supporting the laser projection device 000 and the housing 100 is not changed, that is, the laser projection device 000 does not incline on the whole, and the display effect of the picture projected on the laser projection screen by the laser projection device 000 is better.

In summary, an embodiment of the present application provides a laser projection apparatus, which may include: a housing, a plurality of casters, and a locking assembly. Through the intracavity setting chucking spare that holds in the casing, after laser projection equipment's altitude mixture control finishes, through the removal that the handle spare drove chucking spare with the inner wall butt that holds the chamber in with the casing to the connecting rod locking in the truckle. Therefore, when the laser projection equipment is used, the clamping piece integrated in the accommodating cavity cannot be touched by mistake to move. In addition, through the chucking effect of chucking spare, even the truckle body is touched by the mistake, the truckle body takes place the pivoted probability also lower. So, guaranteed the chucking effect of chucking spare to the truckle for the high distance between the truckle body that is arranged in supporting the casing among the laser projection equipment and the casing can not change. Therefore, the laser projection equipment cannot generate the bad phenomenon of inclination on the whole, and the display effect of the picture projected on the laser projection screen by the laser projection equipment is better.

Alternatively, the retainer 301 of the locking assembly 300 may be threadedly coupled to the portion of the connecting rod 202 located in the receiving cavity 101 of the housing 100. The handle member 302 in the locking assembly 300 may be configured to: the clamping member 301 is driven to rotate around the axis of the connecting rod 202, so that the clamping member 301 is driven to move on the connecting rod 202. In this case, the clamping member 301 is screwed to the portion of the connection rod 202 located in the receiving cavity 101 of the housing 100. Thus, when the handle 302 drives the clamping member 301 to rotate around the axis of the connecting rod 202, the clamping member 301 can be driven to move on the connecting rod 202 along the length direction of the connecting rod 202. Illustratively, the handle member 302 can rotate the clamping member 301 clockwise around the axis of the connecting rod 202, so that the clamping member 301 moves on the connecting rod 202 toward the caster body 201, and finally can abut against the inner wall of the accommodating cavity 101 in the housing 100, so as to lock the caster 200 by the clamping member 301. The handle 302 can also drive the clamping member 301 to rotate counterclockwise around the axis of the connecting rod 202, so that the clamping member 301 moves on the connecting rod 202 in a direction away from the caster body 201 and finally separates from the inner wall of the accommodating cavity 101 to release the locking effect of the clamping member 301 on the caster 200, so that the caster 200 can rotate to adjust the height of the laser projection device 000.

In an embodiment of the present application, please refer to fig. 3 and fig. 4, where fig. 3 is a schematic partial structural diagram of a laser projection apparatus provided in an embodiment of the present application, and fig. 4 is a schematic installation diagram of a handle member and a housing shown in fig. 3. One surface of the housing 100 adjacent to the caster body 201 may have a slide groove 102 communicating with the accommodation chamber 101 in the housing 100. The portion of the handle member 302 located in the accommodating chamber 101 is connected to the retainer 301 after passing through the slide groove 102. In this case, by providing the sliding slot 102 on the housing 100, the handle member 302 can be easily connected to the clamping member 301 after passing through the sliding slot 102. Thus, when the handle member 302 drives the clamping member 301 to move on the connecting rod 202, the handle member 302 can slide in the sliding groove 102, and the sliding groove 102 can play a certain limiting role for the handle member 302. In this way, the convenience and efficiency of the grip piece 302 driving the clip 301 to move on the connecting rod 202 is improved.

Alternatively, as shown in fig. 3 and 4, the fastening member 301 of the locking assembly 300 may have a coupling hole 3011. The grip piece 302 may include: a handle piece body 3021 and an adjusting rod 3022, the handle piece body 3021 may be located outside the accommodating cavity 101 in the housing 100, a portion of the adjusting rod 3022 may be located inside the accommodating cavity 101, and another portion of the adjusting rod 3022 may be located outside the accommodating cavity 101. The adjusting rod 3022 is fixedly connected to the handle body 3021 at a portion outside the accommodating cavity 101 in the housing 100, and the adjusting rod 3022 is connected to the fastening member 301 after passing through the sliding slot 102 and the connecting hole 3011 in sequence. In this case, by providing the attachment hole 3011 on the clip 301, when the clip 301 is controlled to move on the attachment lever 202 by the handle piece 302, first, the user can hold the handle piece body 3021 by hand and pass the adjustment lever 3022 fixedly attached to the handle piece body 3021 through the chute 102 and the attachment hole 3011 on the clip 301. Then, the user can apply a force to the clip 301 through the handle member body 3021 and the adjustment lever 3022, so that the clip 301 moves in the length direction of the connection rod 202 while rotating with respect to the connection rod 202.

In the embodiment of the present application, please refer to fig. 5, and fig. 5 is a schematic view illustrating an installation of an adjusting lever and a sliding chute provided in the embodiment of the present application. The slide groove 102 in the housing 100 may be a circular arc-shaped guide slide groove a, and the center of the circular arc-shaped guide slide groove a may be located on the axis of the connecting rod 202 in the caster 200. In this case, the slide groove 102 in the housing 100 is provided as the guide slide groove a having an arc shape, and the center of the circular guide slide groove a can be positioned on the axis of the connecting rod 202. Thus, when the grip body 3021 moves on the connecting rod 202 by driving the retaining member 301 through the adjusting rod 3022, the adjusting rod 3022 can slide in the arc-shaped guide chute a, and the arc-shaped guide chute a can play a certain guiding role and a certain limiting role for the movement of the adjusting rod 3022, thereby further improving the convenience and the efficiency of driving the retaining member 301 to move on the connecting rod 202 by the grip 302. When the chute 102 is an arc-shaped guide chute a, the number of the arc-shaped guide chutes a may be the same as the number of the adjustment rods 3022 in the grip 302 so that each adjustment rod 3022 can slide in the corresponding arc-shaped guide chute a.

Optionally, please refer to fig. 3 and fig. 6, fig. 6 is a schematic structural diagram of a clamping member provided in an embodiment of the present application. The number of the connecting holes 3011 in the fastening member 301 may be plural, and the plural connecting holes 3011 may be distributed around the connecting rod 202. The number of the adjustment rods 3022 in the grip member 302 may be at least two, and the number of the connection holes 3011 may be more than the number of the adjustment rods 3022. Wherein the handle piece 302 can be connected with the fastening piece 301 of the locking assembly 300 after at least two adjusting rods 3022 are respectively passed through at least two connecting holes 3011 of the plurality of connecting holes 3011. In this case, the number of the connection holes 3011 of the retainer 301 is plural, and the plural connection holes 3011 are distributed around the connection rod 202. Therefore, a user can connect the clamping piece 301 after the at least two adjusting rods 3022 pass through the at least two connecting holes 3011, and can conveniently drive the clamping piece 301 to rotate relative to the connecting rod 202 through the at least two adjusting rods 3022.

In addition, when the laser projection apparatus 000 is debugged, the number of the connection holes 3011 is larger than that of the adjustment rods 3022. Therefore, a user can conveniently and quickly insert the adjusting rod 3022 in the handle piece 302 into the connecting hole 3011 to be assembled with the clamping piece 301, and the use experience of the user is effectively improved. It should be noted that, in other possible implementations, the number of the connecting holes 3011 and the number of the adjusting rods 3022 may also be the same, and this is not specifically limited in this embodiment of the application. For example, as shown in fig. 3, the number of the adjusting rods 3022 may be two, two adjusting rods 3022 may be connected to two connecting holes 3011 of the connecting holes 3011, and a connecting line of centers of the two connecting holes 3011 intersects with an axis of the connecting rod 202. Or, the number of the adjusting rods 3022 may also be three, the three adjusting rods 3022 may be connected to three connecting holes 3011 of the plurality of connecting holes 3011, and a connecting line of centers of the three connecting holes 3011 may enclose an equilateral triangle, and a center of the equilateral triangle may be located on an axis of the connecting rod 202.

In other possible implementations, the number of the connecting holes 3011 in the fastening member 301 may be at least one, and the number of the adjusting rods 3022 may be one. Wherein, an adjusting rod 3022 can pass through one of the at least one connecting holes 3011 to realize the connection between the handle piece 302 and the clamping piece 301. Thus, a force can also be applied to the retainer 301 by a handle member 302, so that the retainer 301 can be moved on the connecting rod 202.

In the embodiment of the present application, please refer to fig. 7, and fig. 7 is a schematic structural diagram of a handle part provided in the embodiment of the present application. The grip member body 3021 in the grip member 302 may be rod-shaped, and the grip member 302 may further include: at least two adapter rods 3023 corresponding to the at least two adjusting rods 3022 one to one. Each of the adapter rods 3023 may be located outside the accommodating cavity 101 in the housing 100, one end of each adapter rod 3023 may be fixedly connected to an end of the corresponding adjusting rod 3022 located outside the accommodating cavity 101, and the other end of each adapter rod 3023 may be fixedly connected to an end of the handle member body 3021. The extending direction of the adapter rod 3023 may be perpendicular to the extending direction of the adjusting rod 3022, and the extending direction of the adjusting rod 3022 may be perpendicular to the extending direction of the handle member body 3021. In addition, the end of the handle piece body 3021 facing away from the adapter rod 3023 may protrude from the housing 100.

In this case, by providing that the extending direction of the adapter rod 3023 is perpendicular to the extending direction of the adjusting rod 3022, and the extending direction of the adjusting rod 3022 is perpendicular to the extending direction of the handle piece body 3021, and the end of the handle piece body 3021 facing away from the adapter rod 3023 protrudes out of the housing 100 in the laser projection apparatus 000. Therefore, a user can apply acting force to the adjusting rod 3022 through the handle piece body 3021 and the adapter rod 3023, and the convenience of operation is further improved. It should be noted that, in the present application, when the number of the laser projection apparatuses 000 is plural, the plural laser projection apparatuses 000 may share one handle member 302. Therefore, the degree of generalization of the plurality of devices is high, and the manufacturing cost of the laser projection device 000 is effectively reduced.

Optionally, please refer to fig. 6 and 8, fig. 8 is a schematic view illustrating an effect of the clamping member provided by the embodiment of the present application abutting against the inner wall of the accommodating cavity. The coupling bar 202 in the caster 200 may have an external thread, and the retainer 301 in the locking assembly 300 may have a first threaded hole a1 to be fitted with the external thread on the coupling bar 202. In this case, the threaded connection of connecting rod 202 to retainer 301 is achieved by the mating of the external thread in connecting rod 202 in caster 200 with first threaded hole a1 on retainer 301. In this manner, after a force is applied to the clip 301 through the adjustment lever 3022 in the grip piece 302, the clip 301 can be rotated about the axial line of the connection rod 202 to be raised or lowered in the longitudinal direction of the connection rod 202. For example, referring to fig. 8 and 9, fig. 9 is a schematic view illustrating the effect of separating a clamping member from the inner wall of a containing cavity according to an embodiment of the present application. When the clamping member 301 ascends along the length direction of the connecting rod 202, so that one side of the clamping member 301 close to the caster body 201 is separated from the inner wall of the accommodating cavity 101, a user can adjust the distance between the caster body 201 and the bottom surface of the housing 100 through the threaded connection between the connecting rod 202 and the housing 100. When the clamping piece 301 descends along the length direction of the connecting rod 202, one side of the clamping piece 301 close to the caster body 201 is abutted against the inner wall of the accommodating cavity 101, and the clamping piece 301 can lock the caster 200. Thus, even if the caster 200 is erroneously touched, the caster body 201 of the caster 200 is less likely to be rotated by the biasing force of the caster 200 generated by the abutment of the retainer 301 with the inner wall of the housing chamber 101. Therefore, the clamping action of the clamping piece 301 on the caster 200 is effectively guaranteed to be good, and normal use of the laser projection equipment 000 is guaranteed.

In the embodiment of the present application, the housing 100 may have a second threaded hole (not shown) communicating with the receiving cavity 101 and cooperating with an external thread on the connection rod 202, and the connection rod 202 may be threadedly connected with the housing 100. In this case, the connecting rod 202 of the caster 200 can be stably connected to the housing 100 by screwing, so that the caster 200 does not fall off the housing 100 when the connecting rod 202 of the caster 200 is rotated to adjust the distance between the caster body 201 and the bottom surface of the housing 100. For example, in practical applications, a threaded hole may be directly formed in the housing 100 to mate with the external thread of the connecting rod 202. Alternatively, as shown in fig. 8 and 9, an insert nut B may be disposed in the casing 100, and the casing 100 and the connecting rod 202 are screwed through the insert nut B, which is not specifically limited in the embodiments of the present application.

Alternatively, please refer to fig. 10 and 11, in which fig. 10 is a schematic view of a clamping member provided in an embodiment of the present application contacting with an inner wall of a receiving cavity of a housing, and fig. 11 is a schematic view of another clamping member provided in an embodiment of the present application. An inner wall of housing 101 in housing 100 facing retainer 301 may have first support protrusion 103, and a side of retainer 301 close to caster body 201 may have second support protrusion 3012. Wherein the handle piece 302 is configured to: bringing retainer 301 to move on connecting rod 202 in caster 200, first support projection 103 is brought into abutment with second support projection 3012. Alternatively, the first support protrusions 103 are separated from the second support protrusions 3012. In this case, by providing the first support projection 103 on the inner wall of the accommodation chamber 101 in the housing 100, the second support projection 3012 is provided on the side of the retainer 301 close to the caster body 201. Like this, when driving chucking spare 301 through handle piece 302 and rotate on connecting rod 202, can effectually reduce the movement stroke of chucking spare 301 on connecting rod 202. That is, the user can drive the clamping piece 301 to rotate by a small distance through the handle piece 302, that is, the clamping piece 301 can be abutted against the first supporting protrusion 103 arranged on the inner wall of the accommodating cavity 101, so as to clamp the caster 200 by the clamping piece 301.

In the present embodiment, the portion of the handle member 302 located in the receiving cavity 101 of the housing 100 can be detachably connected to the retainer 301. Thus, after the height of the laser projection apparatus 000 is adjusted, the grip member 302 can be separated from the chucking member 301 and the grip member 302 can be removed from the housing 100. In this way, only the caster 200 is provided outside the housing 100 of the laser projection apparatus 000, so that the overall appearance of the laser projection apparatus 000 is highly refined.

In summary, the embodiment of the present application provides a laser projection apparatus, which may include: a housing, a plurality of casters, and a locking assembly. Through the intracavity setting chucking spare that holds in the casing, after laser projection equipment's altitude mixture control finishes, through the removal that the handle spare drove chucking spare with the inner wall butt that holds the chamber in with the casing to the connecting rod locking in the truckle. Therefore, when the laser projection equipment is used, the clamping piece integrated in the accommodating cavity cannot be touched by mistake to move. In addition, through the chucking effect of chucking spare, even the truckle body is touched by the mistake, the truckle body takes place the pivoted probability also lower. So, guaranteed the chucking effect of chucking spare to the truckle for the high distance between the truckle body that is arranged in supporting the casing among the laser projection equipment and the casing can not change. Therefore, the laser projection equipment cannot generate the bad phenomenon of inclination on the whole, and the display effect of the picture projected on the laser projection screen by the laser projection equipment is better.

The embodiment of the application also provides a laser projection system, and the laser projection system can be an ultra-short-focus laser projection system. For example, please refer to fig. 12, and fig. 12 is a schematic structural diagram of a laser projection system according to an embodiment of the present disclosure. The laser projection system may include: a projection screen 001 and a laser projection device 000. The laser projection apparatus 000 may be the laser projection apparatus shown in any of the above embodiments.

In this way, when the laser projection apparatus 000 is in operation, the laser projection apparatus 000 may not only emit light obliquely upward, so that the laser projection apparatus 000 may project a picture onto the projection screen 001. In the present application, the locking assembly 300 is integrated into the laser projection device 000, and the locking of the caster 200 in the laser projection device 000 is performed by the cooperation of the clamping member 301 and the handle member 302 in the locking assembly 300. In this way, during the use of the laser projection apparatus 000, the probability of the undesirable phenomenon that each caster 200 rotates after being touched by mistake is low due to the locking action of each locking assembly 300 on the corresponding caster 200. And then each caster 200 is guaranteed to effectively support the laser projection device 000, so that the laser projection device 000 is not inclined integrally, and the display effect of the picture projected on the projection screen 001 by the laser projection device 000 is guaranteed to be good.

In this application, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" means two or more unless expressly limited otherwise.

The above description is intended only to illustrate the alternative embodiments of the present application, and should not be construed as limiting the present application, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A laser projection device, comprising:

a housing having a receiving cavity;

2. The laser projection device of claim 1, wherein the clamping member is threadedly coupled to a portion of the connecting rod located within the receiving cavity; the handle piece is configured to: the clamping piece is driven to rotate around the axis of the connecting rod so as to drive the clamping piece to move on the connecting rod.

3. The laser projection device as claimed in claim 2, wherein a sliding groove communicating with the accommodating chamber is formed in a surface of the housing adjacent to the caster body, and a portion of the handle member located in the accommodating chamber is connected to the clamping member after passing through the sliding groove.

4. The laser projection device of claim 3, wherein the runner is a circular arc shaped guide runner.

5. The laser projection device of claim 3, wherein the clamping member has a coupling hole, and the handle member includes: the handle piece body is positioned outside the accommodating cavity, one part of the adjusting rod is positioned in the accommodating cavity, and the other part of the adjusting rod is positioned outside the accommodating cavity;

the part of the adjusting rod, which is positioned outside the accommodating cavity, is fixedly connected with the handle piece body, and the part of the adjusting rod, which is positioned in the accommodating cavity, sequentially penetrates through the sliding groove and the connecting hole and then is connected with the clamping piece.

6. The laser projection device of claim 5, wherein the number of the connecting holes is multiple, and the connecting holes are distributed around the connecting rod;

the number of the adjusting rods is at least two, and the number of the connecting holes is more than that of the adjusting rods;

wherein the handle member is coupled to the clamping member after the at least two adjustment rods are respectively inserted through at least two of the plurality of coupling holes.

7. The laser projection device of claim 5, wherein the number of the connecting holes is at least one, and the number of the adjusting rods is one;

wherein, after one of the adjusting rods passes through one of the at least one connecting hole, the handle piece is connected with the clamping piece.

8. The laser projection device of any of claims 2 to 7, wherein the tie bar has an external thread and the retainer has a first threaded hole that mates with the external thread.

9. The laser projection device of claim 8, wherein the housing has a second threaded hole in communication with the receiving cavity and mating with the external thread, and the connecting rod is in threaded connection with the housing.

10. A laser projection device as claimed in any one of claims 1 to 7, wherein the part of the grip member located within the receiving cavity is detachably connected to the clip.