Three-dimensional closed light machine

Abstract

A three-dimensional sealed light machine comprises a three-dimensional base, an optical assembly, a first radiator and a first cooling fan. The three-dimensional base forms a sealable containing cavity through the cover plate, and the optical assembly is arranged in the containing cavity. When the ray machine works, the LED lamp emits light, and the light forms a light path in the closed containing cavity through the optical assembly and is projected on an external screen. In the process, the LED lamp generates a large amount of heat, and the heat can be transmitted to the first radiator through the lamp holder and is radiated by the first radiator. In the heat dissipation process, air from the air outlet of the first heat dissipation fan blows towards the first heat dissipation fins, and the heat dissipation efficiency of the first heat dissipation fins is improved; and meanwhile, an air inlet in one side of the first cooling fan enables air flow to be formed in the space where the side, away from the first cooling fins, of the first substrate and the exposed part of the lamp holder are located through the through holes, so that convection heat dissipation is enhanced, and the heat dissipation efficiency is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of projector optical engines, in particular to a three-dimensional sealed optical engine. Background Art

[0002] A projector is a device that can project images or videos onto a screen. With the development of the times, projectors are increasingly used in people's daily work and life. The optical engine is one of the core components of a projector, responsible for projecting the light generated by the light source onto the screen through a series of optical components to form an image. The main function of the optical engine is to modulate the light into an image, magnify it, and then project it onto the screen through a lens.

[0003] To prevent dust from entering the optical system and affecting the transmission of light, thereby affecting the imaging effect, the existing optical engines usually enclose the core components (such as lenses, mirrors, prisms, display screens, etc.) to allow light to be transmitted in a sealed optical path cavity. When the optical engine is working, the light source generates a large amount of heat while emitting light. If the heat generated by the light source cannot be dissipated in time, the temperature in the sealed optical path cavity will rise rapidly, causing the temperature of the optical components in the optical path cavity to rise, which will further lead to damage to the optical components, reduction in performance, shortening of lifespan, and even affecting the reliability and stability of the entire projection system. Therefore, a three-dimensional sealed optical engine is proposed. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a three-dimensional sealed optical engine to solve the above problems.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A three-dimensional sealed optical engine, comprising:

[0007] A three-dimensional base, on which a cover plate is provided to form a sealed accommodation cavity;

[0008] An optical component, disposed in the accommodation cavity, the optical component includes an LED lamp, and the lamp holder of the LED lamp is exposed outside the accommodation cavity;

[0009] A first radiator, disposed on the side of the lamp holder away from the accommodation cavity, the first radiator includes a first substrate, one side of the first substrate is attached to the lamp holder, and the other side is provided with first heat dissipation fins;

[0010] A first cooling fan, disposed on the base, the base is provided with a through hole leading to the lamp holder, the first cooling fan is a double-sided air suction fan, and one side air inlet is aligned with the through hole, and the air outlet accelerates the air flow velocity on the first heat dissipation fins.

[0011] Optionally, a wind guide plate is provided on the base. The wind guide plate has a wind guide groove. The first heat sink is received in the wind guide groove, and the air outlet of the first heat dissipation fan is aligned with the air inlet of the wind guide groove.

[0012] Optionally, the three-dimensional sealed optical engine further includes a second radiator. The second radiator includes a second substrate and second heat sinks provided on both sides of the second substrate. The second substrate is a part of the side wall of the accommodation cavity.

[0013] Optionally, the optical component further includes a reflector cup, and a first Fresnel lens, a heat insulation sheet, a display screen, a second Fresnel lens, a reflector, and a lens that are sequentially provided on one side of the light outlet of the reflector cup;

[0014] The LED lamp is disposed at the focus of the reflector cup; the reflector is disposed at an angle with the second Fresnel lens, and the lens is disposed at the reflection angle of the reflector.

[0015] Optionally, the first Fresnel lens divides the accommodation cavity into a heat generation area and a heat insulation area, and the second heat sink communicates the heat generation area and the heat insulation area;

[0016] A second heat dissipation fan is provided inside the accommodation cavity to form an internal circulating air flow around the heat generation area and the heat insulation area.

[0017] Optionally, the heat insulation area is the space surrounded by the first Fresnel lens and the second Fresnel lens;

[0018] The second heat dissipation fan is a side suction fan. The air inlet side of the side suction fan is located in the heat generation area, and the air outlet is aligned with one side of the heat insulation area, so that the air in the heat insulation area flows to the second heat sink.

[0019] Optionally, a power board, a sound cavity, and a main control board are provided on the base.

[0020] Compared with the prior art, the utility model has the following beneficial effects: When the optical machine works, the LED lamp emits light, and the light forms an optical path in the closed accommodation cavity through the optical component and projects onto the external screen. During this process, the LED lamp generates a large amount of heat, which is transferred to the first radiator through the lamp holder and dissipated by the first radiator. During the heat dissipation process, the air outlet of the first cooling fan blows towards 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 air flow through the through hole in the space where the side of the first substrate away from the first heat sink and the exposed part of the lamp holder are located, thereby enhancing the convective heat dissipation and further improving the heat dissipation efficiency, that is, accelerating the dissipation of the heat generated by the LED lamp, so as to avoid the rapid increase in the temperature of the optical component in the optical path cavity, and solve the technical problems of damage to the optical component, reduction in performance, shortening of service life, and even affecting the reliability and stability of the entire projection system. Compared with the existing optical machine that only accelerates the heat dissipation of the heat sink through the fan, the three-dimensional closed optical machine of the utility model can also form an air flow in the space where the side of the first substrate away from the first heat sink and the exposed part of the lamp holder are located, greatly improving the heat dissipation effect of the optical machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] The structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those who are familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present utility model. Therefore, they do not have technical essence. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope that can be covered by the technical content disclosed in the present utility model without affecting the effects that the present utility model can produce and the purposes that can be achieved.

[0023] Figure 1 is a schematic structural diagram of the three-dimensional closed optical machine of the present utility model;

[0024] Figure 2 is an exploded view of the three-dimensional closed optical machine of the present utility model;

[0025] Figure 3 is a front view of the three-dimensional closed optical machine of the present utility model;

[0026] Figure 4 is Figure 3 a sectional view taken along A-A in

[0027] Figure 5 This is the right view of the three-dimensional sealed optical engine of the present utility model;

[0028] Figure 6 It is Figure 5 The sectional view taken along line B-B in

[0029] Illustration: 10, base; 11, cover plate; 12, through hole; 20, optical component; 21, LED lamp; 22, reflector cup; 23, first Fresnel lens; 24, heat insulation sheet; 25, display screen; 26, second Fresnel lens; 27, reflector; 28, lens; 30, first radiator; 31, first substrate; 32, first heat sink; 40, first cooling fan; 50, air guide plate; 60, second radiator; 61, second substrate; 62, second heat sink; 70, second cooling fan; 81, power supply board; 82, sound cavity; 83, main control board. Detailed implementation manners

[0030] In order to make the invention purpose, features and advantages of the present utility model more obvious and understandable, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the embodiments described below are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0031] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component.

[0032] The technical solutions of the present utility model will be further described below with reference to the accompanying drawings and through specific implementation manners.

[0033] Refer to Figures 1 to 6 An embodiment of the present utility model provides a three-dimensional sealed optical engine, including a three-dimensional base 10, an optical component 20, a first radiator 30 and a first cooling fan 40. The base 10 includes a vertical plate and a horizontal plate provided on one side of the vertical plate, and the vertical plate and the horizontal plate form an open receiving space. A cover plate 11 is provided on the vertical plate, forming a sealable receiving cavity with the base 10.

[0034] The optical component 20 is disposed in the accommodation cavity and is used to form an optical path and project it onto an external screen. The optical component 20 is located in the sealed accommodation cavity, and a sealed optical path system can be formed to prevent dust from entering the optical path system, thereby affecting the transmission of light and the imaging effect. The optical component 20 includes an LED lamp 21, and the LED lamp 21 includes a lamp holder and lamp beads disposed on the lamp holder. Among them, the lamp beads are disposed in the accommodation cavity, the lamp holder of the LED lamp 21 is exposed outside the accommodation cavity, and a part of the lamp holder is a part of the side wall of the accommodation cavity.

[0035] The first heat sink 30 is disposed on the side of the lamp holder away from the accommodation cavity and includes a first substrate 31. One side of the first substrate 31 is attached to the lamp holder, and the other side is provided with a first heat sink fin 32. Optionally, the side area of the first substrate 31 is larger than the side area of the lamp holder. When the lamp beads emit light and generate heat, since the lamp beads are directly connected to the lamp holder, most of the heat of the lamp beads will be transferred to the lamp holder, and the lamp holder is attached to the first substrate 31. Therefore, the heat on the lamp holder will be transferred to the first substrate 31 and finally to the first heat sink fin 32.

[0036] The first cooling fan 40 is disposed on the base 10, and the base 10 is provided with a through hole 12 leading to the lamp holder. The first cooling fan 40 is a double-sided air suction fan ( Figure 6 the direction of the arrow in the figure is the air flow direction), and one side air inlet is aligned with the through hole 12, the other side air inlet is away from the base 10, and the air outlet blows air towards the first heat sink fin 32 to accelerate the air flow velocity on the first heat sink fin 32. It should be noted that the cover plate 11 has air holes leading to the through hole 12. When the first cooling fan 40 works, it can not only accelerate the air flow flowing through the first heat sink fin 32, but also accelerate the air flow in the space where the side of the first substrate 31 away from the first heat sink fin 32 and the exposed part of the lamp holder are located.

[0037] Specifically, when the optical engine works, the LED lamp 21 emits light, and the light forms an optical path in the sealed accommodation cavity through the optical component 20 and is projected onto an external screen. During this process, the LED lamp 21 generates a large amount of heat, which is transferred to the first radiator 30 through the lamp holder, and the first radiator 30 dissipates the heat. During the heat dissipation process, the air outlet of the first cooling fan 40 blows towards the first heat sink 32, accelerating the heat dissipation efficiency of the first heat sink 32; at the same time, the air inlet on one side of the first cooling fan 40 forms an air flow through the through hole 12 in the space where the side of the first substrate 31 away from the first heat sink 32 and the exposed part of the lamp holder are located, thereby enhancing convective heat dissipation and further improving the heat dissipation efficiency, that is, accelerating the dissipation of the heat generated by the LED lamp 21, so as to prevent the temperature of the optical component 20 in the optical path cavity from rising rapidly, and solve the technical problems of damage, performance reduction, shortened lifespan of the optical component 20, and even affecting the reliability and stability of the entire projection system. Compared with the existing optical engine that only accelerates the heat dissipation of the heat sink through a fan, the three-dimensional sealed optical engine of the present invention can also form an air flow in the space where the side of the first substrate 31 away from the first heat sink 32 and the exposed part of the lamp holder are located, greatly improving the heat dissipation effect of the optical engine.

[0038] Furthermore, the first cooling fan 40 is arranged on one side of the base 10, and the air outlet faces downward; the first radiator 30 is arranged at the bottom end of the base 10. A wind guide plate 50 is arranged on the base 10, the wind guide plate 50 has a wind guide groove, the first heat sink 32 is accommodated in the wind guide groove, the air outlet of the first cooling fan 40 is aligned with the air inlet of the wind guide groove, and the air flow changes from a vertical wind to a horizontal wind in the wind guide groove, so as to accelerate the air flow passing through the first heat sink 32.

[0039] Part of the heat generated by the lamp beads is transferred to the lamp holder and dissipated by the first radiator 30, and another part of the heat is dissipated into the accommodation cavity in the form of thermal radiation, and the temperature of other optical components 20 in the accommodation cavity rises. Therefore, it is necessary not only to dissipate the heat of the LED lamp 21, but also to dissipate the heat of the accommodation cavity. Therefore, the three-dimensional sealed optical engine of this embodiment further includes a second radiator 60, the second radiator 60 includes a second substrate 61 and second heat sinks 62 arranged on both sides of the second substrate 61, and the second substrate 61 is a part of the side wall of the accommodation cavity. The second heat sink 62 on one side of the second substrate 61 is located inside the accommodation cavity (referred to as the inner second heat sink), and the second heat sink 62 on the other side is located outside the accommodation cavity (referred to as the outer second heat sink). The heat in the accommodation cavity is transferred to the inner second heat sink, and the inner second heat sink then transfers it to the outer second heat sink, and the outer second heat sink dissipates the heat into the external air.

[0040] Further, the optical component 20 further includes a reflector cup 22, a first Fresnel lens 23, a heat insulation sheet 24, a display screen 25, a second Fresnel lens 26, a reflector 27, and a lens 28 that are sequentially arranged on one side of the light outlet of the reflector cup 22. Among them, the first Fresnel lens 23, the heat insulation sheet 24, the display screen 25, and the second Fresnel lens 26 are parallel to each other. The reflector 27 is arranged at an angle with the second Fresnel lens 26, and the lens 28 is arranged at the reflection angle of the reflector 27.

[0041] It should be noted that the lamp beads are arranged at the focus of the reflector cup 22. The focus of the reflector cup 22 is located on the plane where the light inlet of the reflector cup 22 is located. The lamp holder is not only used to carry the lamp beads but also used to block the light inlet of the reflector cup 22, that is, the part of the lamp holder used to block the light inlet of the reflector cup 22 is a part of the side wall of the accommodating cavity.

[0042] Further, the first Fresnel lens 23 divides the accommodating cavity into a heating area and a heat insulation area. The heating area is the space from the lamp beads to the first Fresnel lens 23; optionally, the second Fresnel lens 26 reduces the heat insulation area, that is, reduces the heat insulation area to the space enclosed by 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 with the heating area and the heat insulation area. A second cooling fan 70 is arranged on the inner side of the accommodating cavity to form a circulating air flow around the heating area and the heat insulation area. The heat in the heating area and the heat insulation area flows through the inner second heat sink along with the circulating air flow and undergoes heat exchange on the inner second heat sink, transferring the heat to the inner second heat sink. It should be noted that the function of the heat insulation sheet 24 is to isolate and absorb the excess heat generated by the lamp beads, protecting the subsequent optical component 20 and the display screen 25 from the influence of high temperature. Therefore, the heat dissipated by the lamp beads in the accommodating cavity is mainly located in the space between the lamp beads and the heat insulation sheet 24, that is, in the heating area and the heat insulation area.

[0043] Further, the second cooling fan 70 is a side suction fan. The air inlet side of the side suction fan is located in the heating area, and the air outlet is aligned with one side of the heat insulation area. When the second cooling fan 70 works, the air in the heating area enters the heat insulation area through the second cooling fan 70, and the air in the heat insulation area flows into the heating area after being cooled by the inner second heat sink, thus forming a cycle, which is conducive to the heat exchange of the heat in the accommodating cavity on the inner second heat sink, thereby improving the heat dissipation effect of the accommodating cavity.

[0044] Further, a power supply board 81, a sound cavity 82, and a main control board 83 are arranged on the base 10. The power supply board 81 is externally connected to a power supply to provide power for the optical engine; the main function of the sound cavity 82 is to optimize the sound output, so that the projector has better volume and sound quality when playing audio; the main control board 83 is used to control the operation of the optical engine.

[0045] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A three-dimensional sealed optical machine, characterized in that: include: A three-dimensional base (10), wherein a cover plate (11) is provided on the base (10) to form a sealable accommodating cavity; An optical component (20) is arranged in the accommodating cavity, the optical component (20) comprising an LED lamp (21), a lamp holder of the LED lamp (21) being exposed outside the accommodating cavity; A first heat sink (30) is arranged on a side of the lamp holder away from the accommodating cavity, the first heat sink (30) comprising a first substrate (31), one side of the first substrate (31) being in contact with the lamp holder, and the other side of the first substrate being provided with a first heat sink (32); The first cooling fan (40) is arranged on the base (10), and the base (10) is provided with a through hole (12) leading to the lamp holder. The first cooling fan (40) is a double-sided suction fan, and the air inlet on one side is aligned with the through hole (12), and the air outlet accelerates the air flow velocity on the first heat sink (32).

2. The three-dimensional sealed optical machine according to claim 1, characterized in that: The base (10) is provided with an air guide plate (50), the air guide plate (50) having an air guide groove, the first heat sink (32) being accommodated in the air guide groove, and the air outlet of the first heat dissipation fan (40) being aligned with the air inlet of the air guide groove.

3. The three-dimensional sealed optical machine according to claim 1, characterized in that: It also comprises a second heat sink (60), the second heat sink (60) comprising a second substrate (61) and second heat sinks (62) arranged on both sides of the second substrate (61), the second substrate (61) being a part of the side wall of the accommodating cavity.

4. The three-dimensional sealed optical machine according to claim 3, characterized in that: The optical assembly (20) further comprises a reflective cup (22), and a first Fresnel lens (23), a heat shield (24), a display screen (25), a second Fresnel lens (26), a reflector (27), and a lens (28) which are sequentially arranged on one side of a light outlet of the reflective cup (22); The LED lamp (21) is arranged at the focal point of the reflective cup (22); the reflector (27) and the second Fresnel lens (26) are arranged at an angle, and the lens (28) is arranged at the reflection angle of the reflector (27).

5. The three-dimensional sealed optical machine according to claim 4, characterized in that: The first Fresnel lens (23) divides the accommodating cavity into a heating area and a heat insulation area, and the second heat sink (62) connects the heating area and the heat insulation area; A second heat dissipation fan (70) is arranged inside the accommodating cavity to form a circulating airflow around the heating area and the heat insulation area.

6. The three-dimensional sealed optical machine according to claim 5, characterized in that: The heat insulation area is a space enclosed by the first Fresnel lens (23) and the second Fresnel lens (26); The second heat dissipation fan (70) is a side suction fan, the air inlet side of the side suction fan is located in the heating area, and the air outlet is aligned with one side of the insulation area, so that the air in the insulation area flows toward the second heat sink (62).

7. The three-dimensional sealed optical machine according to claim 1, characterized in that: The base (10) is provided with a power supply board (81), a sound cavity (82) and a main control board (83).

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