CN222914019U

CN222914019U - A three-dimensional enclosed optical machine

Info

Publication number: CN222914019U
Application number: CN202421821386.8U
Authority: CN
Inventors: 程根
Original assignee: Shenzhen Qili Electronic Technology Co ltd
Current assignee: Shenzhen Qili Electronic Technology Co ltd
Priority date: 2024-07-30
Filing date: 2024-07-30
Publication date: 2025-05-27
Anticipated expiration: 2034-07-30

Abstract

A three-dimensional sealed optical machine includes a three-dimensional base, an optical component, a first heat sink and a first cooling fan. The three-dimensional base forms a sealable accommodating cavity through a cover plate, and the optical component is arranged in the accommodating cavity. When the optical machine is working, the LED lamp emits light, and the light forms a light path in the sealed accommodating cavity through the optical component and is projected onto an external screen. In this process, the LED lamp generates a large amount of heat, which will be transferred to the first heat sink through the lamp holder and dissipated by the first heat sink. In the process of heat dissipation, the air outlet of the first cooling fan blows toward the first heat sink, accelerating the heat dissipation efficiency of the first heat sink; at the same time, the air inlet on one side of the first cooling fan forms an airflow through a through hole in the space where the first substrate is away from one side of the first heat sink and the exposed part of the lamp holder, thereby enhancing convection heat dissipation and further improving heat dissipation efficiency.

Description

Three-dimensional airtight optical engine

Technical Field

The utility model relates to the technical field of projector optical machines, in particular to a three-dimensional airtight optical machine.

Background

A projector is a device that can project images or videos onto a curtain, and is increasingly used in daily work and life of people as the age progresses. The optical machine is one of the core components of the projector and is responsible for projecting light generated by the light source onto a screen after being processed by a series of optical components to form an image. The main function of the light engine is to modulate light into an image and enlarge it, and then project it through a lens onto a screen.

In order to prevent dust from entering the optical system to affect light transmission and thus imaging effect, the existing optical machine generally seals core elements (such as a lens, a reflector, a prism, a display screen, etc.) so that light is transmitted in a sealed optical path cavity. When the light machine works, the light source can generate a large amount of heat while emitting light, if the heat generated by the light source cannot be timely emitted, the heat can quickly raise the temperature in the closed light path cavity, so that the temperature of the optical component in the light path cavity is raised, the optical component is damaged, the performance is reduced, the service life is shortened, and the reliability and the stability of the whole projection system are even affected, so that the three-dimensional closed light machine is provided.

Disclosure of utility model

The utility model aims to provide a three-dimensional airtight optical machine, which solves the problems.

To achieve the purpose, the utility model adopts the following technical scheme:

a stereoscopic hermetic optical engine comprising:

The three-dimensional base is provided with a cover plate so as to form a sealable accommodating cavity;

The optical assembly is arranged in the accommodating cavity and comprises an LED lamp, and a lamp holder of the LED lamp is exposed out of the accommodating cavity;

The first radiator is arranged on one side, far away from the accommodating cavity, of the lamp holder and comprises a first substrate, one side of the first substrate is attached to the lamp holder, and a first radiating fin is arranged on the other side of the first substrate;

The first cooling fan is arranged on the base, the base is provided with a through hole communicated with the lamp holder, the first cooling fan is a double-side air suction fan, an air inlet at one side is aligned with the through hole, and an air outlet accelerates the airflow velocity on the first cooling fin.

Optionally, an air deflector is disposed on the base, the air deflector has an air guiding groove, the first cooling fin is accommodated in the air guiding groove, and an air outlet of the first cooling fan is aligned to an air inlet of the air guiding groove.

Optionally, the stereoscopic airtight optical engine further comprises a second radiator, the second radiator comprises a second substrate and second radiating fins arranged on two sides of the second substrate, and the second substrate is a part of the side wall of the accommodating cavity.

Optionally, the optical assembly further comprises a reflecting cup, a first Fresnel lens, a heat insulation sheet, a display screen, a second Fresnel lens, a reflecting mirror and a lens, wherein the first Fresnel lens, the heat insulation sheet, the display screen, the second Fresnel lens, the reflecting mirror and the lens are sequentially arranged on one side of a light outlet of the reflecting cup;

The LED lamp is arranged on the focus of the reflecting cup, the reflecting mirror and the second Fresnel lens are arranged at an included angle, and the lens is arranged on the reflecting angle of the reflecting mirror.

Optionally, the first fresnel lens separates the accommodating cavity into a heat generating area and a heat insulating area, and the second heat sink is communicated with the heat generating area and the heat insulating area;

A second cooling fan is arranged on the inner side of the accommodating cavity so as to form circulating air flow around the heating area and the heat insulation area.

Optionally, the heat insulation area is a space surrounded by the first fresnel lens and the second fresnel lens;

The second cooling fan is a side air suction type fan, the air inlet side of the side air suction type fan is positioned in the heating area, and the air outlet is aligned to one side of the heat insulation area, so that air in the heat insulation area flows to the second cooling fin.

Optionally, a power board, a sound cavity and a main control board are arranged on the base.

Compared with the prior art, the LED light has the beneficial effects that when the optical machine works, the LED light emits light, and the light forms a light path in the closed accommodating cavity through the optical component and is projected on the external screen. In this process, the LED lamp generates a large amount of heat, which is transferred to the first heat sink through the lamp socket and is radiated by the first heat sink. Meanwhile, the air inlet at one side of the first cooling fan enables the first substrate to be far away from one side of the first cooling fin and the space where the exposed part of the lamp holder is located to form air flow through the through hole, so that convection heat dissipation is enhanced, the heat dissipation efficiency is further improved, namely, heat generated by the LED lamp is accelerated, and the problem that the temperature of an optical component in a light path cavity is rapidly increased is solved, and the technical problems that the optical component is damaged, the performance is reduced, the service life is shortened, and even the reliability and the stability of the whole projection system are affected are solved. Compared with the existing ray machine which only accelerates the heat dissipation of the radiating fins through the fan, the three-dimensional closed ray machine can enable the space where one side of the first substrate far away from the first radiating fins and the exposed part of the lamp holder are located to form air flow, and the heat dissipation effect of the ray machine is greatly improved.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.

The structures, proportions, sizes, etc. shown in the drawings are shown only in connection with the present disclosure, and are not intended to limit the scope of the utility model, since any modification, variation in proportions, or adjustment of the size, etc. of the structures, proportions, etc. should be considered as falling within the spirit and scope of the utility model, without affecting the effect or achievement of the objective.

FIG. 1 is a schematic structural diagram of a three-dimensional hermetic optical engine according to the present utility model;

FIG. 2 is an exploded view of the stereoscopic hermetic optical engine of the present utility model;

FIG. 3 is a front view of a stereoscopic hermetic optical engine of the present utility model;

FIG. 4 is a cross-sectional view of A-A of FIG. 3;

FIG. 5 is a right side view of the stereoscopic hermetic optical engine of the present utility model;

fig. 6 is a cross-sectional view of B-B of fig. 5.

The LED lamp is characterized by comprising 10, a base, 11, a cover plate, 12, a through hole, 20, an optical component, 21, an LED lamp, 22, a reflecting cup, 23, a first Fresnel lens, 24, a heat insulation sheet, 25, a display screen, 26, a second Fresnel lens, 27, a reflector, 28, a lens, 30, a first radiator, 31, a first substrate, 32, a first radiating fin, 40, a first radiating fan, 50, an air deflector, 60, a second radiator, 61, a second substrate, 62, a second radiating fin, 70, a second radiating fan, 81, a power panel, 82, a sound cavity, 83 and a main control board.

Detailed Description

In order to make the objects, features and advantages of the present utility model more comprehensible, the technical solutions in the embodiments of the present utility model are described in detail below with reference to the accompanying drawings, and it is apparent that the embodiments described below are only some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. It is noted that when one component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present.

The technical scheme of the utility model is further described below by the specific embodiments with reference to the accompanying drawings.

Referring to fig. 1 to 6, the embodiment of the present utility model provides a stereoscopic hermetic optical device, which includes a stereoscopic base 10, an optical module 20, a first heat sink 30, and a first heat dissipation fan 40. The base 10 includes a standing upright plate and a cross plate provided at one side of the upright plate, the upright plate and the cross plate forming an open accommodation space. The vertical plate is provided with a cover plate 11 which forms a closed accommodating cavity with the base 10.

The optical assembly 20 is disposed in the receiving chamber for forming an optical path and projecting on an external screen. The optical assembly 20 is positioned in the closed accommodating cavity to form a closed optical path system, so that dust is prevented from entering the optical path system to influence light transmission and imaging effect. The optical assembly 20 includes an LED lamp 21, and the LED lamp 21 includes a lamp socket and a lamp bead provided on the lamp socket. Wherein, the lamp pearl sets up in holding the intracavity, and the lamp stand of LED lamp 21 exposes outside holding the chamber to a part of lamp stand is the part of holding the chamber lateral wall.

The first heat sink 30 is disposed on a side of the lamp socket away from the accommodating cavity, and includes a first substrate 31. One side of the first substrate 31 is attached to the lamp socket, and the other side is provided with a first heat sink 32. Alternatively, the side area of the first substrate 31 is larger than the side area of the lamp socket. When the lamp beads emit light and generate heat, most of the heat of the lamp beads is transferred to the lamp holder due to the direct connection between the lamp beads and the lamp holder, and the lamp holder is attached to the first substrate 31, so that the heat on the lamp holder is transferred to the first substrate 31 and finally transferred to the first radiating fins 32.

The first heat radiation fan 40 is disposed on the base 10, and the base 10 is provided with a through hole 12 leading to the lamp socket. The first cooling fan 40 is a double-sided air suction fan (the direction of the arrow in fig. 6 is the air flow direction), and the air inlet on one side is aligned with the through hole 12, the air inlet on the other side is far away from the base 10, and the air outlet blows air towards the first cooling fin 32 to accelerate the air flow velocity on the first cooling fin 32. The cover plate 11 has an air hole leading to the through hole 12. When the first cooling fan 40 is operated, not only the air flow through the first cooling fin 32 but also the air flow of the space where the side of the first substrate 31 far from the first cooling fin 32 and the exposed portion of the lamp socket are located can be accelerated.

Specifically, when the optical engine is in operation, the LED lamp 21 emits light, and the light is projected onto the external screen through the optical assembly 20 in the closed accommodating cavity. In this process, the LED lamp 21 generates a large amount of heat, which is transferred to the first heat sink 30 through the lamp socket, and is radiated by the first heat sink 30. Simultaneously, the air inlet at one side of the first cooling fan 40 enables the air flow to be formed by the air inlet at one side of the first substrate 31 far away from the first cooling fin 32 and the space where the exposed part of the lamp holder is located through the through hole 12, thereby enhancing convection heat radiation, further improving the heat radiation efficiency, namely accelerating the heat radiation generated by the LED lamp 21, thereby avoiding the rapid temperature rise of the optical component 20 in the light path cavity, and solving the technical problems of damage, performance reduction, service life shortening of the optical component 20 and even affecting the reliability and stability of the whole projection system. Compared with the existing ray machine which only accelerates the heat dissipation of the radiating fins by the fan, the three-dimensional closed ray machine can enable the space where one side of the first substrate 31 far away from the first radiating fins 32 and the exposed part of the lamp holder are located to form air flow, and the heat dissipation effect of the ray machine is greatly improved.

Further, the first heat dissipating fan 40 is disposed at one side of the base 10 with its air outlet downward, and the first heat sink 30 is disposed at the bottom end of the base 10. The air deflector 50 is arranged on the base 10, the air deflector 50 is provided with an air guide groove, the first radiating fins 32 are accommodated in the air guide groove, the air outlet of the first radiating fan 40 is aligned with the air inlet of the air guide groove, and the air flow is changed from vertical air to horizontal air in the air guide groove, so that the air flow flowing through the first radiating fins 32 is quickened.

A part of the heat generated by the lamp beads is transferred to the lamp base, and is radiated by the first radiator 30, and a part of the heat is radiated into the accommodating cavity in a heat radiation manner, so that other optical components 20 in the accommodating cavity are heated. For this reason, it is necessary to radiate heat not only from the LED lamp 21 but also from the housing chamber. For this reason, the stereoscopic hermetic optical device of the present embodiment further includes a second heat sink 60, the second heat sink 60 includes a second substrate 61 and second heat sinks 62 disposed at both sides of the second substrate 61, and the second substrate 61 is a portion of a sidewall of the receiving cavity. The second heat sink 62 on one side of the second substrate 61 is located inside the accommodating chamber (referred to as an inner side second heat sink), and the second heat sink 62 on the other side is located outside the accommodating chamber (referred to as an outer side second heat sink). The heat in the accommodating cavity is transferred to the inner side second radiating fins, the inner side second radiating fins are transferred to the outer side second radiating fins, and the outer side second radiating fins radiate the heat to the outside air.

Further, the optical assembly 20 further includes a reflector 22, a first fresnel lens 23, a heat insulating sheet 24, a display screen 25, a second fresnel lens 26, a reflector 27, and a lens 28, which are sequentially disposed on one side of the light outlet of the reflector 22. Wherein the first Fresnel lens 23, the heat insulating sheet 24, the display screen 25 and the second Fresnel lens 26 are parallel to each other. The reflector 27 is disposed at an angle to the second fresnel lens 26, and the lens 28 is disposed at a reflection angle of the reflector 27.

It should be noted that, the lamp beads are disposed at the focal point of the reflective cup 22, the focal point of the reflective cup 22 is located on the plane where the light inlet of the reflective cup 22 is located, and the lamp holder is not only used for bearing the lamp beads, but also for blocking the light inlet of the reflective cup 22, i.e. the part of the lamp holder for blocking the light inlet of the reflective cup 22 is a part of the side wall of the accommodating cavity.

Further, the first Fresnel lens 23 separates the accommodating cavity into a heat generating area and a heat insulating area, the heat generating area is a space from the lamp beads to the first Fresnel lens 23, and optionally, the second Fresnel lens 26 reduces the heat insulating area, i.e. the heat insulating area is reduced to a space formed by surrounding the first Fresnel lens 23 and the second Fresnel lens 26. The second heat sink 62 is located at one end of the first fresnel lens 23 and communicates between the heat generation region and the heat insulation region. A second cooling fan 70 is provided inside the receiving cavity to create a circulating air flow around the heat generating area and the heat insulating area. The heat of the heating area and the heat insulation area flows through the inner second cooling fins along with the internal circulating airflow, and heat exchange is carried out on the inner second cooling fins, so that the heat is transferred to the inner second cooling fins. It should be noted that the heat insulating sheet 24 is used to isolate and absorb the excessive heat generated by the lamp beads, and protect the subsequent optical assembly 20 and the display screen 25 from high temperature. Thus, the heat dissipated by the beads in the receiving chamber is mainly located in the space between the beads and the insulating sheet 24, i.e., the heat generation area and the heat insulation area.

Further, the second cooling fan 70 is a side air suction fan, the air inlet side of the side air suction fan is located at the heat generating area, and the air outlet is aligned to one side of the heat insulating area. When the second cooling fan 70 works, air in the heat generating area enters the heat insulating area through the second cooling fan 70, and the air in the heat insulating area flows into the heat generating area after being cooled by the second cooling fins on the inner side, so that circulation is formed, heat exchange is facilitated on the second cooling fins on the inner side of the accommodating cavity, and therefore the heat radiating effect of the accommodating cavity is improved.

Further, the base 10 is provided with a power board 81, a sound cavity 82 and a main control board 83. The power panel 81 is externally connected with a power supply to provide power for the optical machine, the main function of the sound cavity 82 is to optimize sound output, so that the projector has better volume and tone quality when playing audio, and the main control panel 83 is used for controlling the operation of the optical machine.

While the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that the foregoing embodiments may be modified or equivalents may be substituted for some of the features thereof, and that the modifications or substitutions do not depart from the spirit and scope of the embodiments of the utility model.

Claims

1. A stereoscopic hermetic optical engine, comprising:

a three-dimensional base (10), wherein a cover plate (11) is arranged on the base (10) to form a sealable accommodating cavity;

The optical assembly (20) is arranged in the accommodating cavity, the optical assembly (20) comprises an LED lamp (21), and a lamp holder of the LED lamp (21) is exposed out of the accommodating cavity;

The first radiator (30) is arranged on one side, far away from the accommodating cavity, of the lamp holder, the first radiator (30) comprises a first substrate (31), one side of the first substrate (31) is attached to the lamp holder, and a first radiating fin (32) is arranged on the other side of the first substrate;

The first cooling fan (40) is arranged on the base (10), the base (10) is provided with a through hole (12) leading to the lamp holder, the first cooling fan (40) is a double-side air suction fan, an air inlet on one side is aligned with the through hole (12), and an air outlet accelerates the air flow velocity on the first cooling fin (32).

2. The three-dimensional airtight light machine according to claim 1, wherein an air deflector (50) is disposed on the base (10), the air deflector (50) has an air guiding groove, the first cooling fin (32) is accommodated in the air guiding groove, and an air outlet of the first cooling fan (40) is aligned with an air inlet of the air guiding groove.

3. The stereoscopic hermetic lighting machine according to claim 1, further comprising a second heat sink (60), wherein the second heat sink (60) comprises a second substrate (61) and second heat sinks (62) provided on both sides of the second substrate (61), and the second substrate (61) is a portion of a side wall of the accommodation chamber.

4. The stereoscopic hermetic lighting machine according to claim 3, wherein the optical module (20) further comprises a reflective cup (22) and a first fresnel lens (23), a heat insulating sheet (24), a display screen (25), a second fresnel lens (26), a reflective mirror (27) and a lens (28) sequentially arranged at one side of a light outlet of the reflective cup (22);

The LED lamp (21) is arranged on the focus of the reflecting cup (22), the reflecting mirror (27) and the second Fresnel lens (26) are arranged at an included angle, and the lens (28) is arranged on the reflecting angle of the reflecting mirror (27).

5. The stereoscopic hermetic light machine as claimed in claim 4, wherein the first fresnel lens (23) partitions the accommodation chamber into a heat generating region and a heat insulating region, and the second heat sink (62) communicates the heat generating region and the heat insulating region;

A second cooling fan (70) is disposed inside the receiving cavity to form a circulating air flow around the heat generating region and the heat insulating region.

6. The stereoscopic hermetic lighting machine according to claim 5, wherein the heat-insulating region is a space surrounded by the first fresnel lens (23) and the second fresnel lens (26);

The second cooling fan (70) is a side air suction fan, the air inlet side of the side air suction fan is positioned in the heating area, and the air outlet is aligned to one side of the heat insulation area, so that air in the heat insulation area flows to the second cooling fin (62).

7. The stereoscopic hermetic optical engine according to claim 1, wherein the base (10) is provided with a power board (81), a sound cavity (82) and a main control board (83).