CN217561908U - Laser projection system - Google Patents

Abstract

The application discloses laser projection system belongs to the projection display field. The laser projection system includes: the cabinet body and laser projection equipment. The laser projection equipment can be fixed in the containing groove in the cabinet body. I.e. embedding the laser projection device in the cabinet. Therefore, the whole volume of the laser projection system can be reduced, and the miniaturization of the laser projection system is facilitated. Two end parts of one side of the bottom surface of the accommodating groove, which is deviated from the shell in the laser projection equipment, are respectively provided with a first air inlet and a first air outlet, and the air outlet surface of the first cooling fan faces the optical assembly. Therefore, the first heat dissipation fan sucks cold air in the external environment into the shell through the first air inlet, the first heat dissipation fan guides the cold air into the optical assembly, the cold air carries away heat at the optical assembly when passing through the optical assembly, and the heat can be emitted through the first air outlet. Therefore, heat generated by the laser projection equipment during working can be dissipated in time.

Description

Laser projection system

Technical Field

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

Background

The laser projection system comprises a projection screen, laser projection equipment and a counter, wherein the laser projection equipment can project pictures on the projection screen to realize the functions of video playing and the like. Counters are commonly used to support laser projection equipment.

At present, the laser projection equipment is usually placed on the table top of a counter, so that the space occupied by the laser projection equipment and the counter is large, and the miniaturization of a laser projection system is not facilitated.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a laser projection system. The problem that the laser projection equipment in the prior art is high in working temperature can be solved, the technical scheme is as follows:

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

the cabinet body is provided with a containing groove;

fix the laser projection equipment in the storage tank, laser projection equipment includes: the device comprises a shell, an optical assembly and a first cooling fan;

the side, away from the bottom surface of the accommodating groove, of the shell is provided with a first air inlet and a first air outlet, and the first air inlet and the first air outlet are respectively positioned on two sides of the shell;

the optical assembly and the first cooling fan are fixed in the shell, the first cooling fan is located at the position of the first air inlet, and the air outlet surface of the first cooling fan faces the optical assembly.

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

a laser projection system, a cabinet and a laser projection device are provided. The laser projection equipment in the laser projection system can be fixed in the containing groove in the cabinet body. Namely, the laser projection device can be embedded in the cabinet. Therefore, the stability of installation of the laser projection equipment can be ensured, and the laser projection equipment is not easy to displace. And the whole volume of the laser projection system can be effectively reduced, and the miniaturization of the laser projection system is facilitated. In addition, two end parts of one side of the shell in the laser projection equipment, which deviates from the bottom surface of the accommodating groove in the cabinet body, are respectively provided with a first air inlet and a first air outlet, and the air outlet surface of the first heat dissipation fan positioned at the first air inlet faces the optical assembly. Therefore, the first heat dissipation fan can suck cold air in the external environment into the shell through the first air inlet, and the first heat dissipation fan guides the cold air into the position of the optical assembly, so that the heat of the position of the optical assembly can be taken away when the cold air passes through the optical assembly. The heat can be dissipated to the external environment through the first air outlet. Therefore, heat generated by the laser projection equipment during working can be dissipated in time, and normal working of the laser projection equipment is guaranteed.

Drawings

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

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

FIG. 2 is a schematic structural diagram of a laser projection apparatus provided in an embodiment of the present application;

FIG. 3 is a schematic diagram of a portion of the laser projection device shown in FIG. 2;

FIG. 4 is a top view of a laser projection device provided by an embodiment of the present application;

FIG. 5 is a schematic diagram of another laser projection apparatus provided in an embodiment of the present application;

FIG. 6 is a schematic partial structural diagram of another laser projection apparatus provided in an embodiment of the present application;

fig. 7 is a schematic positional relationship between a first heat dissipation fan and a first air inlet and a second air inlet according to an embodiment of the present disclosure;

FIG. 8 is a schematic diagram of another laser projection system provided in an embodiment of the present application;

FIG. 9 is a front view of the laser projection system shown in FIG. 8;

fig. 10 is a schematic structural diagram of another laser projection system provided in an embodiment of the present application.

Specific embodiments of the present application have been shown by way of example in the drawings and 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.

In the related art, a laser projection apparatus in a laser projection system generally includes: the optical module comprises a shell and an optical component fixed in the shell. Laser projection equipment is typically located on the floor of a counter (e.g., a television cabinet) in a laser projection system. Usually, heat dissipation holes are formed in two outer side surfaces of the housing to dissipate heat generated by the optical module during operation. After the laser projection equipment is integrated in the counter, the counter is very easy to shield heat dissipation holes in the laser projection equipment. The heat generated by the laser projection equipment during long-time working cannot be dissipated timely. If the laser projection device works in a high-temperature environment for a long time, the internal structure of the laser projection device is damaged, so that the display effect of the picture projected by the laser projection device is poor.

Referring to fig. 1, fig. 1 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 cabinet 100 and a laser projection apparatus 200.

The cabinet 100 in the laser projection system may have a receiving groove 101.

The laser projection device 200 in the laser projection system may be fixed in the accommodating groove 101 on the cabinet 100. For more clearly seeing the structure of the laser projection apparatus, please refer to fig. 2 and fig. 3, fig. 2 is a schematic structural diagram of a laser projection apparatus provided in an embodiment of the present application, and fig. 3 is a schematic structural diagram of a part of the laser projection apparatus shown in fig. 2. The laser projection apparatus 200 may include: the optical module comprises a shell 201, an optical assembly 202 and a first cooling fan 203. The first air inlet 2011 and the first air outlet 2012 may be disposed on one side of the casing 201 of the laser projection apparatus 200, which is away from the bottom surface of the accommodating groove 101 on the cabinet 100, and the first air inlet 2011 and the first air outlet 2012 may be disposed on two sides of the casing 201, respectively.

The optical component 202 and the first heat dissipation fan 203 in the laser projection apparatus 200 may be both fixed in the housing 201, and the first heat dissipation fan 203 may be located at the first air inlet 2011, and the air outlet surface A1 of the first heat dissipation fan 203 may face the optical component 202 fixed in the housing 201.

In the present embodiment, the laser projection device 200 in the laser projection system can be fixed in the accommodating groove 101 in the cabinet 100. I.e., the laser projection device 200 may be embedded in the cabinet 100. In this way, the stability of the installation of the laser projection apparatus 200 can be ensured, so that the laser projection apparatus 200 is not easily displaced. And the whole volume of the laser projection system can be effectively reduced, and the miniaturization of the laser projection system is facilitated. In addition, two end portions of one side of the casing 201 of the laser projection apparatus 200, which is away from the bottom surface of the accommodating groove 101 on the cabinet 100, have a first air inlet 2011 and a first air outlet 2012 respectively, and an air outlet surface A1 of the first heat dissipation fan 203 located at the first air inlet 2011 faces the optical assembly 202. Thus, the first heat dissipation fan 203 can suck the cool air in the external environment into the housing 201 through the first air inlet 2011, and the first heat dissipation fan 203 guides the cool air to the location of the optical component 202, so that the heat of the location of the optical component 202 can be taken away when the cool air passes through the optical component 202. The heat can be dissipated to the external environment through the first outlet 2012. Therefore, heat generated during the operation of the laser projection device 200 can be dissipated in time, and the normal operation of the laser projection device 200 is ensured.

It should be noted that, in the actual use process, the user may design the cabinet 100 according to the overall shape and size of the laser projection device 200, so that the laser projection device 200 may be directly installed in the accommodating groove 101 on the cabinet 100, and the position of the laser projection device 200 does not need to be adjusted when the position of the cabinet 100 is determined, thereby improving the user experience of the user.

In summary, the embodiment of the present application provides a laser projection system, which may include: the cabinet body and laser projection equipment. The laser projection equipment in the laser projection system can be fixed in the containing groove in the cabinet body. I.e. the laser projection device may be embedded in the cabinet. So, can guarantee the stability of laser projection equipment installation for laser projection equipment is difficult by the aversion. And the whole volume of the laser projection system can be effectively reduced, and the miniaturization of the laser projection system is facilitated. In addition, two end parts of one side of the shell in the laser projection equipment, which is deviated from the bottom surface of the accommodating groove in the cabinet body, are respectively provided with a first air inlet and a first air outlet, and the air outlet surface of the first cooling fan at the first air inlet faces the optical assembly. Therefore, the first heat dissipation fan can suck cold air in the external environment into the shell through the first air inlet, and the first heat dissipation fan guides the cold air into the position of the optical assembly, so that the heat of the position of the optical assembly can be taken away when the cold air passes through the optical assembly. The heat can be dissipated to the external environment through the first air outlet. Therefore, heat generated by the laser projection equipment during working can be dissipated in time, and normal working of the laser projection equipment is guaranteed.

Optionally, please refer to fig. 4, where fig. 4 is a top view of a laser projection apparatus provided in an embodiment of the present application. The side of the housing 201 of the laser projection apparatus 200 facing away from the bottom surface of the accommodating groove 101 on the cabinet 100 may further have a light outlet 2013. The first air inlet 2011 on a side of the housing 201 of the laser projection apparatus 200 facing away from the bottom surface of the receiving groove 101 of the cabinet 100 may include: the plurality of first sub air inlets 20111 and the first outlet 2012 arranged in an array may include: the first sub-air outlets 20121 are arranged in an array. That is, each of the first sub air inlets 20111 and each of the first sub air outlets 20121 indicates a strip-shaped hole. The first sub air inlets 20111 and the first sub air outlets 20121 may be located on two sides of the light outlet 2013. In this case, by respectively disposing the first sub air inlet 20111 and the first sub air outlet 20121 at two sides of the light outlet 2013 on the housing 201, the first heat dissipation fan 203 can suck cold air in the external environment into the housing 201 through the first sub air inlet 20111, and the first heat dissipation fan 203 guides the cold air to the position of the optical component 202, so that heat at the position of the optical component 202 can be taken away when the cold air passes through the optical component 202. This heat can be dissipated to the external environment through the first sub-outlet 20121. Therefore, heat generated during the operation of the laser projection device 200 can be dissipated in time, and the normal operation of the laser projection device 200 is ensured. In this application, an orthographic projection of the optical assembly 202 on the bottom surface of the accommodating groove 101 in the cabinet 100 may be located between an orthographic projection of the first sub air inlet 20111 on the bottom surface of the accommodating groove 101 and an orthographic projection of the first sub air outlet 20121 on the bottom surface of the accommodating groove 101.

In this embodiment, as shown in fig. 4, the first air inlet 2011 on a side of the casing 201 of the laser projection apparatus 200 facing away from the bottom surface of the accommodating groove 101 on the cabinet 100 may further include: the plurality of second sub air inlets 20112 may be arranged on one side of the plurality of first sub air inlets 20111, and the length of the second sub air inlets 20112 may be greater than the length of the first sub air inlets 20111. In this case, since the second sub air inlet 20112 is further provided at one side of the first sub air inlet 20111. Therefore, the first heat dissipation fan 203 can simultaneously suck the cool air in the external environment into the housing 201 through the first sub air inlet 20111 and the second sub air inlet 20112, that is, the amount of the cool air sucked per unit time is increased. Thereby further improving the efficiency of heat dissipation from the optical assembly 202. It should be noted that, in other possible implementation manners, the length of the second sub air inlet 20112 may also be equal to the length of the first sub air inlet 20111, or be less than the length of the first sub air inlet 20111, which is not specifically limited in this embodiment of the application.

Optionally, as shown in fig. 4, the first outlet 2012 of the housing 201 of the laser projection apparatus 200 on the side facing away from the bottom surface of the accommodating groove 101 of the cabinet 100 may further include: the plurality of second sub-outlets 20122 are arranged in an array, and the length of the plurality of second sub-outlets 20122 may be greater than that of the first sub-outlet 20121. In this case, the cool air sucked into the housing 201 through the first air inlet 2011 takes away heat generated from the optical module 202 while passing through the optical module 202, and simultaneously radiates the heat to the external environment through the first sub air outlet 20121 and the second sub air outlet 20122 disposed at one side of the first sub air inlet 20121. In this way, the heat conduction efficiency of the optical assembly 202 during operation is effectively improved, i.e. the heat dissipation efficiency of the laser projection apparatus 200 is improved. It should be noted that, in other possible implementation manners, the length of the second sub-air outlet 20122 may also be equal to the length of the first sub-air outlet 20121, or smaller than the length of the first sub-air outlet 20121, which is not specifically limited in the embodiment of the present application.

In the embodiment of the present application, please refer to fig. 5, and fig. 5 is a schematic structural diagram of another laser projection apparatus provided in the embodiment of the present application. One side of the housing 201 of the laser projection apparatus 200 close to the bottom surface of the accommodating groove 101 on the cabinet 100 may have a second air inlet 2014 opposite to the first air inlet 2011. In this case, the second air inlet 2014 opposite to the first air inlet 2011 is provided at a side of the case 201 close to the bottom surface of the container 101 on the cabinet 100. In this way, the first heat dissipation fan 203 can simultaneously suck the cool air in the external environment into the housing 201 through the first air inlet 2011 and the second air inlet 2014, i.e., the amount of the cool air sucked in per unit time is further increased. Thereby further improving the efficiency of heat dissipation from the optical assembly 202.

Optionally, please refer to fig. 6 and 7, where fig. 6 is a partial structural schematic view of another laser projection apparatus provided in the embodiment of the present application, and fig. 7 is a schematic view of a position relationship between a first cooling fan and a first air inlet and a second air inlet provided in the embodiment of the present application. The second air inlet 2014 of the housing 201 is disposed at one side of the air inlet surface of the first heat dissipation fan 203, and at least a portion of the first air inlet 2011 is disposed at one side of the air inlet surface of the first heat dissipation fan 203. In this case, the first heat dissipation fan 203 does not shield the area where the second air inlet 2014 is located, and does not shield a partial area where the first air inlet 2011 is located. And then make in the shell 201 can be entered into through second air inlet 2014 smoothly to the cold wind among the external environment, and do not influence from first air inlet 2011 department air inlet when having guaranteed that the distribution area of first air inlet 2011 is great.

In the embodiment of the present application, as shown in fig. 5 and 6, one side of the housing 201 of the laser projection apparatus 200, which is close to the bottom surface of the accommodating groove 101 on the cabinet 100, may further have a second air outlet 2015 disposed opposite to the first air outlet 2012. In this case, heat is simultaneously radiated to the external environment through the first outlet 2012 and the second outlet 2015. In this way, the heat conduction efficiency of the optical assembly 202 during operation is further effectively improved, i.e., the heat dissipation efficiency of the laser projection apparatus 200 is further improved.

Optionally, the shape of the air inlet of the first air inlet 2011 and the second air inlet 2014 on the housing 201 may be a long-strip-shaped hole, or may also be a circular hole; the shape of the air outlet of the first air outlet 2012 and the second air outlet 2015 on the housing 201 may be a long strip-shaped hole, or may also be a round hole, which is not specifically limited in the embodiment of the present application. It should be noted that, as shown in fig. 4 and fig. 5, in the embodiments of the present application, the shape of the air inlet of the first air inlet 2011 and the second air inlet 2014 on the housing 201 is a hole with a long strip shape, and the shape of the air outlet of the first air outlet 2012 and the second air outlet 2015 on the housing 201 is a hole with a long strip shape.

In the embodiment of the present application, as shown in fig. 6, the laser projection apparatus 200 may further include: the second heat dissipation fan 204 is fixed in the housing 201, the second heat dissipation fan 204 may be located at the position of the first air outlet 2012, and the air outlet face B1 of the second heat dissipation fan 204 may face the first air outlet 2012 on a side of the bottom face of the housing 201 away from the accommodating groove 101. In this case, by disposing the second heat dissipation fan 204 at the position of the first air outlet 2012, the second heat dissipation fan 204 can increase the heat conduction efficiency of the optical assembly 202 during operation, and thus increase the heat dissipation efficiency of the optical assembly 202 in the laser projection apparatus 200.

Optionally, as shown in fig. 6, the laser projection system may further include: heat conductive sheet 300, heat conductive pipe 400, and fin radiator 500. The heat conductive sheet 300 may be in contact with the optical assembly 202, one end of the heat conductive pipe 400 may be connected to the heat conductive sheet 300, and the other end of the heat conductive pipe 400 may be connected to the fin radiator 500. The finned heat sink 500 is located between the air outlet surface B1 of the second heat dissipation fan 204 and the first air outlet 2012. In this case, the heat generated by the optical assembly 202 during operation can be timely conducted to the fin heat sink 500 through the heat conducting fins 300 and the heat conducting pipes 400, so that the temperature of various parts in the optical assembly 202 is low, and the service life of the optical assembly 202 is effectively ensured. In addition, the heat conducted to the fin heat sink 500 can be dissipated out through the first air outlet 2012 by the second heat dissipation fan 204.

For example, the heat conducting sheet 300 may be connected to a projection lens (not shown) in the optical assembly 202, and the heat conducting pipes 400 are respectively connected to the heat conducting sheet 300 and the fin heat sink 500. In this way, heat at the projection lens in the optical assembly 202 can be dissipated sequentially through the heat-conducting fin 300, the heat-conducting pipe 400, and the fin heat sink 500. In the practical application process, the heat conducting sheet 300 may also be in contact with a laser (not shown in the figure) in the optical assembly 202, so that heat generated by the laser during operation can be dissipated sequentially through the heat conducting sheet 300, the heat conducting pipe 400 and the fin heat sink 500, which is not specifically limited in this embodiment of the application.

In this application, a heat conducting liquid can be injected into the heat conducting pipe 400, and the heat conducting liquid can conduct the heat on the heat conducting sheet to the fin radiator 500 in time in a heat conducting manner. The finned heat sink 500 has a large contact area with air, and dissipates heat to the environment surrounding the optical assembly 202 by heat exchange with the air flowing along. This finned radiator 500 can be the aluminium alloy radiator that adopts natural convection or force convection, includes: an aluminum finned radiator, an aluminum shovel radiator or an aluminum welded fin. The aluminum profile radiator has good heat dissipation capability, and can ensure that heat generated by the optical assembly 202 during operation can be dissipated timely.

In an embodiment of the present application, an optical assembly in a laser projection apparatus may include: an optical-mechanical assembly, a projection lens and a light source assembly (not shown) are arranged in the shell. The optical-mechanical assembly is respectively connected with the light source assembly and the projection lens. By way of example, the projection lens may include: the lens holder, and the speculum and a plurality of lens group of being located in the lens holder. The reflector is positioned on one side of the plurality of lens groups far away from the optical machine component. Each lens set may include: at least one convex lens and/or at least one concave lens.

As an example, the light source assembly may include: laser, fluorescence wheel, filter color wheel and reflection assembly etc.. The laser may be a blue laser. After the blue laser emits blue light, red light and green light are generated through the fluorescent wheel, and then the blue light, the red light and the green light can be reflected to the optical machine component through the reflection component after passing through the color filtering wheel.

The opto-mechanical assembly may further comprise: an illumination assembly (not shown) and a galvanometer (not shown). The lighting assembly is used for processing the light beam input into the optical-mechanical assembly into a laser lighting light beam; the DMD is used as an important component in the optical-mechanical assembly and is used for carrying out image signal modulation on a laser illumination light beam provided by the illumination assembly to form a modulated light beam; the galvanometer in the optical-mechanical assembly is used for periodically moving four positions under the action of electric drive, and modulated light beams passing through the galvanometer sequentially enter the projection lens in a staggered mode. The projection lens can project and image the light beam adjusted by the optical machine component through a plurality of lens groups and the reflecting mirror.

Optionally, please refer to fig. 8 and 9, where fig. 8 is a schematic structural diagram of another laser projection system provided in an embodiment of the present application, and fig. 9 is a front view of the laser projection system shown in fig. 8. The cabinet 100 of the laser projection system may have a cavity 102 between the bottom surface of the receiving groove 101 on the cabinet 100 and the laser projection apparatus 200, and the cabinet 100 may further have an opening 103 communicating with the cavity 102 between the bottom surface of the receiving groove 101 in the cabinet 100 and the laser projection apparatus 200. In this case, when the second air inlet 2014 and the second air outlet 2015 are disposed on one side of the housing 201 close to the bottom surface of the accommodating groove 101 on the cabinet 100, the cavity 102 between the bottom surface of the accommodating groove 101 on the cabinet 100 and the laser projection device 200 and the opening 103 communicated with the cavity 102 can ensure that the first cooling fan 203 smoothly sucks cold air in the external environment into the housing 201 through the opening 103, the cavity 102 communicated with the opening 103 and the second air inlet 2014, and the cold air takes away heat generated by the optical component 202 during operation and then emits the heat out through the second air outlet 2015, the cavity 102 and the opening 103 communicated with the cavity 102. In the process of assembling the actual laser projection device 200 with the cabinet 100, the laser projection device 200 may be clamped in the accommodating groove 101 in the cabinet 100, and a cavity 102 is formed between the laser projection device 200 and the bottom surface of the accommodating groove 101. The cavity 102 can also be used as a placing space, and a remote controller for controlling the laser projection device 200 is placed in the cavity, so that the experience of a user is improved.

Referring to fig. 10, fig. 10 is a schematic structural diagram of another laser projection system according to an embodiment of the present disclosure. The laser projection system may further include: and a projection screen 600, wherein when the laser projection apparatus 200 is in operation, the laser projection apparatus 200 may emit light obliquely upward, so that the laser projection apparatus 200 may project a picture onto the projection screen 600.

In summary, the embodiment of the present application provides a laser projection system, which may include: the cabinet body and laser projection equipment. The laser projection equipment in the laser projection system can be fixed in the accommodating groove in the cabinet body. Namely, the laser projection device can be embedded in the cabinet. Therefore, the stability of installation of the laser projection equipment can be ensured, and the laser projection equipment is not easy to displace. And the whole volume of the laser projection system can be effectively reduced, and the miniaturization of the laser projection system is facilitated. In addition, two end parts of one side of the shell in the laser projection equipment, which is deviated from the bottom surface of the accommodating groove in the cabinet body, are respectively provided with a first air inlet and a first air outlet, and the air outlet surface of the first cooling fan at the first air inlet faces the optical assembly. Therefore, the first heat dissipation fan can suck cold air in the external environment into the shell through the first air inlet, and the first heat dissipation fan guides the cold air into the position of the optical assembly, so that the heat of the position of the optical assembly can be taken away when the cold air passes through the optical assembly. The heat can be dissipated to the external environment through the first air outlet. Therefore, heat generated by the laser projection equipment during working can be dissipated in time, and normal working of the laser projection equipment is guaranteed.

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 to be exemplary only, and not to limit the present application, and any modifications, equivalents, improvements, etc. made within the spirit and scope of the present application are intended to be included therein.

Claims (10)

1. A laser projection system, comprising:

the cabinet body is provided with a containing groove;

fix the laser projection equipment in the storage tank, laser projection equipment includes: the device comprises a shell, an optical assembly and a first cooling fan;

the side, away from the bottom surface of the accommodating groove, of the shell is provided with a first air inlet and a first air outlet, and the first air inlet and the first air outlet are respectively positioned on two sides of the shell;

the optical assembly and the first cooling fan are fixed in the shell, the first cooling fan is located at the position of the first air inlet, and the air outlet surface of the first cooling fan faces the optical assembly.

2. The laser projection system of claim 1, wherein a light outlet is further formed in the housing on a side facing away from the bottom surface of the accommodating groove, and the first air inlet comprises: a plurality of first sub-inlets of array arrangement, first air outlet includes: the first air outlets are arranged in an array manner;

the plurality of first sub air inlets and the plurality of first sub air outlets are respectively positioned on two sides of the light outlet.

3. The laser projection system of claim 2, wherein the first air inlet further comprises: the air inlet structure comprises a plurality of first sub air inlets, a plurality of second sub air inlets arranged in an array, wherein the plurality of second sub air inlets are arranged on one sides of the plurality of first sub air inlets, and the lengths of the second sub air inlets are greater than those of the first sub air inlets.

4. The laser projection system of claim 2, wherein the first air outlet further comprises: the air conditioner comprises a plurality of first sub air outlets, a plurality of second sub air outlets arranged in an array, a plurality of first sub air outlets and a plurality of second sub air outlets, wherein the plurality of second sub air outlets are arranged on one sides of the plurality of first sub air outlets, and the lengths of the second sub air outlets are larger than those of the first sub air outlets.

5. The laser projection system of claim 1, wherein a second air inlet is disposed opposite to the first air inlet on a side of the housing near the bottom surface of the accommodating groove.

6. The laser projection system of claim 5, wherein the second air inlet is located on one side of the air inlet surface of the first heat dissipation fan, and at least a portion of the first air inlet is located on one side of the air inlet surface of the first heat dissipation fan.

7. The laser projection system of claim 1, wherein a second air outlet disposed opposite to the first air outlet is further disposed on a side of the housing near the bottom surface of the accommodating groove.

8. The laser projection system of any one of claims 5 to 7, wherein a cavity is provided between the bottom surface of the accommodating tank and the laser projection device, and the cabinet further has an opening communicating with the cavity.

9. A laser projection system as claimed in any one of claims 1 to 7, wherein the laser projection device further comprises: and the second heat dissipation fan is fixed in the shell and is positioned at the position of the first air outlet, and the air outlet surface of the second heat dissipation fan faces the first air outlet.

10. The laser projection system of claim 9, further comprising: the optical module comprises a heat conducting fin, a heat conducting pipe and a fin radiator, wherein the heat conducting fin is in contact with the optical module, one end of the heat conducting pipe is connected with the heat conducting fin, and the other end of the heat conducting pipe is connected with the fin radiator;

the fin radiator is located between the air outlet surface of the second cooling fan and the first air outlet.

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