CN219105332U

CN219105332U - Projection apparatus

Info

Publication number: CN219105332U
Application number: CN202223570367.6U
Authority: CN
Inventors: 谭亮
Original assignee: Formovie Chongqing Innovative Technology Co Ltd
Current assignee: Formovie Chongqing Innovative Technology Co Ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-05-30
Anticipated expiration: 2032-12-30

Abstract

The utility model relates to a projection device comprising: the shell is provided with an air inlet and an air outlet which are oppositely arranged, and a heat dissipation air duct communicated with the air inlet and the air outlet is formed in the shell; the heat radiation fan is arranged at the air inlet or the air outlet; and the ray apparatus subassembly set up in the heat dissipation wind channel, just ray apparatus subassembly includes ray apparatus main part and installing support, and the installing support includes the first curb plate and the second curb plate of guide plate and relative setting, and the first end and the first curb plate of guide plate are connected, and the second end is connected with the second curb plate, and first curb plate, guide plate and second curb plate enclose to establish and form installation space, and first curb plate orientation air intake sets up, and the second curb plate orientation air outlet sets up, and the ventilation hole has all been seted up to first curb plate and second curb plate, and ray apparatus main part is installed in installation space. The cold air flows through the air inlet, the heat dissipation air channel and the air outlet in sequence and is guided by the guide plate, so that heat generated by the operation of the main body of the optical machine can be rapidly dissipated to the outside of the shell, and the heat dissipation efficiency is high.

Description

Projection apparatus

Technical Field

The present utility model relates to the field of projection devices, and in particular, to a projection device.

Background

The projector, also called projector, is an electronic device capable of projecting images or videos onto a curtain or a curtain wall, and can be connected with a computer, a mobile phone, a television box, a game machine and other devices through different interfaces to play corresponding video signals. Today, projectors are widely used in homes, offices, schools, and entertainment venues, providing great convenience for people's life, learning, and entertainment.

Generally, the duration of a single working period of the projector is long, and a large amount of heat can be emitted from an optical machine component in the projector due to long-time working, so that the heat in the projector needs to be rapidly discharged, and the influence on the service performance and service life of the optical machine component due to long-time high-temperature environment is avoided. However, most projectors on the market currently have complicated installation and fixing structures of the optical-mechanical components, and poor air flow, which results in poor heat dissipation effect and low heat dissipation efficiency of the optical-mechanical components.

Disclosure of Invention

Based on this, it is necessary to provide a projection device, and it is aimed at solving the problems of complex installation and fixing structure, poor heat dissipation effect and low heat dissipation efficiency in the prior art.

The present application provides a projection apparatus, which includes:

the shell is provided with an air inlet and an air outlet which are oppositely arranged, and a heat dissipation air duct communicated with the air inlet and the air outlet is formed in the shell;

the cooling fan is arranged at the air inlet or the air outlet; and

the ray apparatus subassembly, ray apparatus subassembly set up in the heat dissipation wind channel, just ray apparatus subassembly includes ray apparatus main part and installing support, the installing support includes guide plate and relative first curb plate and the second curb plate that sets up, the guide plate set up in first curb plate with between the second curb plate, just the first end of guide plate with first curb plate is connected, the second end of guide plate with the second curb plate is connected, first curb plate the guide plate with the second curb plate encloses to establish and forms the installation space, first curb plate orientation the air intake sets up, the second curb plate orientation the air outlet sets up, first curb plate with the ventilation hole has all been seted up to the second curb plate, ray apparatus main part install in the installation space.

When the projection equipment of the scheme works, heat generated by the operation of the optical machine main body is accumulated in the heat dissipation air channel of the shell, so that the projection equipment is ensured to be used safely and reliably continuously, the cooling air in the external environment enters the heat dissipation air channel through the cooling fan, the cooling air flows through the vent holes of the first side plate of the mounting bracket, the heat generated by the optical machine main body can be taken away from the vent holes of the second side plate, and finally, the heat is discharged out of the shell from the air outlet, so that the cooling and heat dissipation of the projection equipment are realized. Compared with the prior art, the cold air in the scheme sequentially flows through the air inlet, the heat dissipation air duct and the air outlet, so that heat generated by the operation of the optical machine main body can be rapidly dissipated into the environment; in addition, ray apparatus main part is installed in the installation space that forms by deflector, first curb plate and second curb plate enclose, and installation fixed mode and simple structure, and first curb plate and second curb plate can not form the choked flow to the cold air, are favorable to noise reduction production volume, promote user's use experience and feel.

The technical scheme of the application is further described below:

in one embodiment, a clearance gap is concavely formed at the upper end of the guide plate, a lens is connected to one side of the optical machine main body, which faces the guide plate, and the lens is inserted into the clearance gap.

In one embodiment, the optical engine assembly further comprises a light source heat sink, the light source heat sink being connected to the optical engine body.

In one embodiment, the light source radiator includes a first heat dissipation portion and a second heat dissipation portion that are connected, the first heat dissipation portion is connected to one side of the light machine main body, which is away from the guide plate, the second heat dissipation portion extends along the direction of the first heat dissipation portion towards the guide plate, the first side plate or the second side plate is disposed between the second heat dissipation portion and the light machine main body, and the first heat dissipation portion exceeds the first side plate or the second side plate in the direction away from the guide plate.

In one embodiment, a plurality of heat dissipation columns are arranged on one side of the light machine body, which faces the guide plate.

In one embodiment, the optical engine assembly further comprises an imaging unit heat sink, the imaging unit heat sink is connected with the optical engine body, and the imaging unit heat sink is located above the light source heat sink.

In one embodiment, the projection device further includes a circuit board assembly, the circuit board assembly is disposed in the heat dissipation air duct, the circuit board assembly is mounted on the mounting bracket, and the circuit board assembly and the optical machine assembly are disposed opposite to the heat dissipation fan.

In one embodiment, the circuit board assembly is vertically stacked with the optomechanical assembly or laterally side-by-side.

In one embodiment, the circuit board assembly includes a circuit board and a circuit board bracket, the circuit board is mounted on the circuit board bracket, and the circuit board bracket is mounted on the mounting bracket and above the light source radiator.

In one embodiment, the projection device further includes a first sound box and a second sound box, where the first sound box and the second sound box are respectively disposed on two sides of the optical machine assembly; the first sound box is located between the guide plate and the shell, and the second sound box is located between the light source radiator and the shell.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is an assembled block diagram of a projection device of the present application;

FIG. 2 is an exploded view of the projection device of FIG. 1;

FIG. 3 is a schematic diagram of an opto-mechanical assembly;

FIG. 4 is a partial exploded view of FIG. 3;

fig. 5 is a partially exploded view of a optomechanical assembly.

Reference numerals illustrate:

10. a projection device; 11. a housing; 111. an air inlet; 112. an air outlet; 113. a heat dissipation air duct; 12. a decorative cover; 20. a heat radiation fan; 30. an opto-mechanical assembly; 31. a light machine main body; 311. a lens; 312. a light source radiator; 3121. a first heat dissipation part; 3122. a second heat dissipation part; 313. a light source unit; 3131. a heat radiation column; 314. an imaging unit heat sink; 315. an imaging unit; 32. a mounting bracket; 321. a first side plate; 3211. a vent hole; 322. a second side plate; 323. a deflector; 3231. a clearance gap; 40. a circuit board assembly; 50. a first sound box; 60. and a second sound box.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

As shown in fig. 1 and 2, a projection device 10 is shown in an embodiment of the present application, which is capable of projecting images or videos onto a curtain or curtain wall to meet the needs of a user for work, learning or entertainment.

Illustratively, the projection device 10 includes: housing 11, radiator fan 20, and opto-mechanical module 30. The shell 11 is of a square column structure, is simple and regular in structure, and is convenient to place on a placement plane (such as a tabletop) stably. Of course, the housing 11 may have a regular or irregular structure such as a cylindrical shape, a trapezoidal shape, or the like in other embodiments.

The casing 11 is provided with an air inlet 111 and an air outlet 112 which are oppositely arranged, and a heat dissipation air duct 113 communicated with the air inlet 111 and the air outlet 112 is formed in the casing 11. That is, the air inlet 111, the heat dissipation air duct 113 and the air outlet 112 cooperate to form an air circulation path so as to discharge heat in the housing 11.

In this embodiment, the air inlet 111 and the air outlet 112 may be any one of a large-area opening, a ventilation grille, and the like. Preferably, the air inlet 111 and the air outlet 112 adopt ventilation grids, such as point grids or bar grids, which not only meet the air and heat circulation requirements, but also can prevent dust, mosquitoes and other insects in the external environment from entering the machine body.

In addition, in order to improve the appearance of the product, a decorative cover 12 is further installed on the housing 11, and the decorative cover 12 is covered outside the air inlet 111 and the air outlet 112. The decorative cover 12 is provided with ventilation holes arranged in an array so that air can circulate normally.

In addition, the heat dissipation fan 20 is disposed at the air inlet 111 or the air outlet 112. For example, the heat radiation fan 20 is installed at the air intake 111 in the present embodiment. Of course, according to practical needs, it is also possible to install a cooling fan 20 at both the air inlet 111 and the air outlet 112 to further enhance the air and heat flowing capability.

With continued reference to fig. 2 to 5, the optical module 30 is disposed in the heat dissipation air duct 113, and the optical module 30 includes an optical main body 31 and a mounting bracket 32, wherein the mounting bracket 32 includes a guide plate 323, a first side plate 321 and a second side plate 322 disposed opposite to each other, the guide plate 323 is disposed between the first side plate 321 and the second side plate 322, and a first end of the guide plate 323 is connected to the first side plate 321, and a second end of the guide plate 323 is connected to the second side plate 322. The first side plate 321, the guide plate 323 and the second side plate 322 enclose to form an installation space, the first side plate 321 is arranged towards the air inlet 111, the second side plate 322 is arranged towards the air outlet 112, the first side plate 321 and the second side plate 322 are provided with ventilation holes 3211, and the optical machine main body 31 is arranged in the installation space.

It will be appreciated that the first side plate 321 and the second side plate 322 are perpendicular to the air flowing direction in the heat dissipation air duct 113, or are at an angle.

In summary, implementing the technical scheme of the embodiment has the following beneficial effects: when the projection device 10 of the above-mentioned scheme works, the heat generated by the operation of the optical engine main body 31 is accumulated in the heat dissipation air duct 113 of the housing 11, so as to ensure the safe and reliable continuous use of the projection device 10, the cooling air in the external environment enters the heat dissipation air duct 113 through the heat dissipation fan 20, and flows through the ventilation holes 3211 of the first side plate 321 of the mounting bracket, so that the heat generated by the optical engine main body 31 can be taken away from the ventilation holes 3211 of the second side plate 322, the deflector 323 plays a role in guiding the cooling air flowing between the first side plate 321 and the second side plate 322, so that the air can flow from the first side plate 321 to the second side plate 322 directly to carry the heat to more quickly pass through the mounting bracket 32, the heat dissipation and cooling effect is improved, and the heat is finally discharged out of the housing 11 from the air outlet 112, thereby realizing the cooling and heat dissipation of the projection device 10.

Compared with the prior art, the cold air in the scheme sequentially flows through the air inlet 111, the heat dissipation air duct 113 and the air outlet 112, so that heat generated by the operation of the optical engine main body 31 can be rapidly dissipated into the environment, and as the guide plate 323 is arranged between the first side plate 321 and the second side plate 322, the guide plate 323 plays a guide role on the cold air flowing through the first side plate 321 and the second side plate 322, and can prevent the diffusion of the cold air in the flowing process, the heat dissipation efficiency is high and the heat dissipation effect is good; in addition, the optical engine main body 31 is installed in an installation space formed by surrounding the guide plate 323, the first side plate 321 and the second side plate 322, and the installation fixing mode and the structure are simple, and the first side plate 321 and the second side plate 322 can not form choked flow to cold air, so that noise generation amount is reduced, and user experience is improved.

The number, shape, size, etc. of the ventilation holes 3211 formed in the first side plate 321 and the second side plate 322 may be the same or different. The ventilation holes 3211 may be formed in a partial region of the first side plate 321 and the second side plate 322, or may be fully distributed in the whole plate body. These can all be flexibly selected according to actual needs.

Alternatively, the first side plate 321, the second side plate 322, and the baffle 323 may be detachably assembled, or may be integrally formed. In addition, the mounting bracket 32 further includes a bottom plate, and the first side plate 321, the second side plate 322 and the deflector 323 are all connected to an upper surface of the bottom plate, where the bottom plate is used for assembling and connecting the mounting bracket 32 with the housing 11.

Further, a hollow space 3231 is concavely formed at the upper end of the guide plate 323, a lens 311 is connected to a side of the optical machine body 31 facing the guide plate 323, and the lens 311 is inserted into the hollow space 3231. The clearance gap 3231 can accommodate the lens 311, thereby avoiding the problem of installation interference, and the clearance gap 3231 also plays a role in positioning and supporting the lens 311. Alternatively, the void 3231 may be C-shaped, U-shaped, or the like.

It should be noted that, the air guide plate 323 is not provided with the air vent 3211 to ensure the air guide effect of the air guide plate 323 on the cold air.

With continued reference to fig. 3 to 5, in addition, the optical engine assembly 30 further includes a light source heat sink 312 according to any of the above embodiments, where the light source heat sink 312 is connected to the optical engine body 31. Specifically, the optical engine body 31 includes a light source unit 313, a laser light source, an LED light source or a laser fluorescent light source is disposed in the light source unit 313, and a light source heat sink 312 is connected to the light source unit 313. When in operation, the light source radiator 312 can conduct the heat generated by the light source unit 313 of the optical engine main body 31 into the heat dissipation air duct 113, so as to strengthen the heat dissipation efficiency of the optical engine main body 31, and facilitate the cool air to take away the heat more quickly.

Specifically, the light source heat sink 312 includes a first heat dissipation portion 3121 and a second heat dissipation portion 3122 connected, the first heat dissipation portion 3121 is connected to a side of the light engine body 31 facing away from the deflector 323, the second heat dissipation portion 3122 extends along the direction of the first heat dissipation portion 3121 toward the deflector 323, and the first side plate 321 or the second side plate 322 is disposed between the second heat dissipation portion 3122 and the light engine body 31. The first heat dissipation portion 3121 extends beyond the first side plate 321 or the second side plate 322 in a direction away from the deflector 323, i.e., at least a portion of the first heat dissipation portion 3121 is outside the installation space formed by the installation bracket 32.

In this way, the heat generated by the optical engine main body 31 is transferred to the first heat dissipation portion 3121 and the second heat dissipation portion 3122, and after the cooling fan 20 makes the cool air enter the housing 11, a part of the cool air directly flows through the first heat dissipation portion 3121 to take away the heat on the first heat dissipation portion 3121; the other part of air-cooled air firstly flows through the air vents 3211 on the first side plate 321, flows through the optical machine main body 31, takes away the heat generated by the optical machine main body 31, flows out through the air vents 3211 on the second side plate 322, flows through the second heat dissipation part 3122, takes away the heat on the second heat dissipation part 3122, or the other part of air-cooled air firstly flows through the second heat dissipation part 3122, takes away the heat on the second heat dissipation part 3122, flows through the air vents 3211 on the first side plate 321, flows through the optical machine main body 31, takes away the heat generated by the optical machine main body 31, and flows out through the air vents 3211 on the second side plate 322. By using the first heat radiation portion 3121 and the second heat radiation portion 3122 as the optical machine body 31, the heat radiation area of the light source heat radiator 312 is increased, and the heat radiation efficiency of the optical machine body 31 can be further improved.

Alternatively, the second heat dissipation portion 3122 and the heat dissipation fan 20 are respectively located at both sides of the mounting bracket 32. For example, the second heat dissipation portion 3122 is located at one side of the first side plate 321, and the heat dissipation fan 20 is located at one side of the second side plate 322. The heat radiation fan 20 is used to flow cool air in a direction from the second side plate 322 to the first side plate 321.

In some embodiments, a heat dissipation post 3131 is disposed on a side of the light engine body 31 facing the deflector 323. The heat dissipation post 3131 can increase the heat dissipation surface area of the optical engine body 31, and enhance the heat dissipation effect. According to practical needs, the heat dissipation post 3131 may be integrally formed on the optical engine main body 31, or may be detachably assembled.

Further, a plurality of heat dissipating studs 3131 are provided, and at least a portion of the heat dissipating studs 3131 are protruded toward the deflector 323 to abut against the deflector 323. Through the butt of heat dissipation post 3131 and guide plate 323, can play the installation positioning effect, guarantee that ray apparatus subassembly 30 structure is more stable.

With continued reference to fig. 3-5, in some embodiments, the optical engine body 31 further includes an imaging unit heat sink 314, the imaging unit heat sink 314 is connected to the optical engine body 31, and the imaging unit heat sink 314 is located above the light source heat sink 312. Specifically, the optical bench body 31 includes an imaging unit 315, the imaging unit 315 is connected to the light source unit 313 and located above the light source unit 313, and the lens 311 is connected to the light emitting side of the imaging unit 315. The image forming unit 315 is provided with a light modulator such as DMD or LCoS, for modulating the light emitted from the light source unit 313 into a projection image. The imaging unit radiator 314 can radiate heat for the imaging unit 315, so that the imaging unit 315 is ensured to work safely and reliably.

In addition, the projection apparatus 10 further includes a circuit board assembly 40, the circuit board assembly 40 is disposed in the heat dissipation air duct 113, the circuit board assembly 40 is mounted on the mounting bracket 32, and the circuit board assembly 40 and the optical machine assembly 30 are disposed opposite to the heat dissipation fan 20. For example, in the embodiment, the cooling fan 20 is installed at the air inlet 111, and the circuit board assembly 40 and the optical machine assembly 30 are opposite to the cooling fan 20, so that when the cooling fan 20 works, the cooling air flowing in from the air inlet 111 can directly blow the circuit board assembly 40 and the optical machine assembly 30, thereby taking away heat more quickly and better.

In the present embodiment, the circuit board assembly 40 and the optomechanical assembly 30 are vertically stacked or laterally arranged side by side. Preferably, the circuit board assembly 40 is mounted above the opto-mechanical assembly 30 and the two are stacked and mated. Specifically, the circuit board assembly 40 includes a circuit board and a circuit board bracket, the circuit board is mounted on the circuit board bracket, and the circuit board bracket is mounted on the mounting bracket 32 and is located above the light source heat sink 312. Therefore, the circuit board assembly 40 and the optical machine assembly 30 can be connected more compactly, the space occupation of the shell 11 is reduced, and the projection device 10 is reduced in size to achieve a miniaturized design.

With continued reference to fig. 2, in some embodiments, the projection apparatus 10 further includes a first speaker 50 and a second speaker 60, where the first speaker 50 and the second speaker 60 are disposed on two sides of the optical-mechanical assembly 30, respectively. For example, the first speaker 50 and the second speaker 60 are disposed on opposite sides or adjacent sides of the opto-mechanical assembly 30, respectively. The first speaker 50 and the second speaker 60 may satisfy the audio playing requirements of the projection device 10.

Specifically, the first speaker 50 is located between the baffle 323 and the housing 11. The first speaker 50 is formed in a case structure, and has speakers at both ends thereof, thereby providing better sound effects. The second speaker 60 is located between the light source heat sink 312 and the housing 11. The speaker orientation of the second speaker 60 is different from that of the first speaker 50, so that the first speaker 50 and the second speaker 60 cooperate to output sound in multiple directions at the same time, thereby achieving a sound effect.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Claims

1. A projection device, comprising:

the cooling fan is arranged at the air inlet or the air outlet; and

2. The projection device of claim 1, wherein a clearance gap is concavely formed at the upper end of the guide plate, a lens is connected to a side of the optical machine body facing the guide plate, and the lens is inserted into the clearance gap.

3. The projection device of claim 1, wherein the light engine assembly further comprises a light source heat sink coupled to the light engine body.

4. The projection device of claim 3, wherein the light source heat sink includes a first heat sink portion and a second heat sink portion connected to each other, the first heat sink portion being connected to a side of the light engine body facing away from the baffle, the second heat sink portion extending in a direction of the first heat sink portion toward the baffle, the first side plate or the second side plate being disposed between the second heat sink portion and the light engine body, the first heat sink portion exceeding the first side plate or the second side plate in a direction facing away from the baffle.

5. The projection device of claim 4, wherein a side of the light engine body facing the baffle is provided with a plurality of heat dissipating studs.

6. The projection device of claim 3, wherein the light engine assembly further comprises an imaging unit heat sink, the imaging unit heat sink being coupled to the light engine body and the imaging unit heat sink being located above the light source heat sink.

7. The projection device of claim 4, further comprising a circuit board assembly disposed within the heat dissipation duct, the circuit board assembly mounted on the mounting bracket, and the circuit board assembly and the opto-mechanical assembly both disposed directly opposite the heat dissipation fan.

8. The projection device of claim 7, wherein the circuit board assembly is vertically stacked with the opto-mechanical assembly or laterally side-by-side.

9. The projection device of claim 7, wherein the circuit board assembly includes a circuit board and a circuit board bracket, the circuit board mounted on the circuit board bracket, the circuit board bracket mounted on the mounting bracket and above the light source heat sink.

10. The projection device of claim 3, further comprising a first speaker and a second speaker, the first speaker and the second speaker being disposed on respective sides of the opto-mechanical assembly; the first sound box is located between the guide plate and the shell, and the second sound box is located between the light source radiator and the shell.