Internal circulation double-air-duct projector
By designing the internal circulation dual air duct structure and heat exchange system in the projector, the problem of low heat dissipation efficiency of LCD modules in the prior art is solved, and a more efficient heat dissipation effect is achieved, ensuring that the projector operates stably at lower temperatures .
Patent Information
- Application Number
- CN202421130825.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-22
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-05-22
AI Technical Summary
There is only one cooling air duct for the existing projector, which results in low heat dissipation efficiency of the LCD module and cannot work effectively at a lower suitable temperature.
Design an internal circulation dual-channel projector. By setting the first air duct and the first circulation fan on the left and right ends of the LCD module, the second air duct and the second circulation fan are set at the upper or lower ends of the LCD module to form two cycle convection. The airflow is connected to each other to improve heat dissipation efficiency, and adds a heat exchange base and a cooling fan at the light source assembly to assist heat dissipation.
It achieves faster and more timely heat dissipation effects, improves the heat dissipation efficiency of LCD modules and light source components, and ensures stable operation at lower temperatures.
Smart Images
Figure CN222321639U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of projectors, in particular to an internal circulation double-air duct projector. Background Art
[0002] When the projector is working, the light source component generates a lot of heat, and since the LCD module is located in front of the light source component, it is necessary to set up an additional air duct inside the projector to cool the LCD module. However, the existing projectors only have one cooling air duct inside to cool the LCD module, which results in poor cooling effect and inability to effectively remove the working heat of the LCD module in a timely manner. The heat dissipation efficiency is low, resulting in the LCD module being unable to work at a lower and appropriate temperature. Therefore, we propose an internal circulation dual-duct projector to meet the needs. Utility Model Content
[0003] The purpose of the utility model is to provide an internal circulation double-air duct projector in view of the deficiencies in the prior art, and the internal circulation double-air duct projector can well solve the above-mentioned problems.
[0004] In order to achieve the above requirements, the technical solution adopted by the utility model to solve its technical problems is:
[0005] Provided is an internal circulation dual-duct projector, comprising a shell, on which a lens and a light source assembly emitting light inward are provided; a reflector for reflecting light into the lens is provided in the shell; an LCD module is provided in the shell between the light source assembly and the reflector; left and right ends of the LCD module are both provided with first ducts connecting the front and rear sides thereof, the first duct located on the side of the LCD module away from the lens is provided with a first circulation fan and a first heat exchange fin, and the first heat exchange fin is embedded in the shell; a second duct connecting the front and rear sides thereof is provided at the upper or lower end of the LCD module, the second duct is provided with a second circulation fan and a second heat exchange fin, the second heat exchange fin is embedded in the shell, and the first heat exchange fin and the second heat exchange fin are connected in one piece or separately.
[0006] The internal circulation dual-duct projector described in the utility model, wherein the first circulation fan is located on the back side of the reflector, and the first heat exchange fin is located on the side of the first circulation fan close to the LCD module; the second circulation fan is located below the reflector, and the second heat exchange fin is located on the side of the second circulation fan close to the LCD module.
[0007] The internal circulation dual-duct projector described in the utility model, wherein the first heat exchange fin and the second heat exchange fin are connected to form an L-shaped plate structure, and a mounting position adapted to the contour of the L-shaped plate structure is provided on the outer shell corresponding to the L-shaped plate structure, and a plurality of guide vanes are vertically provided on the inner side wall and the outer side wall of the L-shaped plate structure.
[0008] The internal circulation dual-duct projector described in the utility model, wherein the first air duct is provided with two air outlets at one end close to the LCD module and arranged side by side front to back, one of the air outlets is horizontally aligned with the LCD module, and the other air outlet is located at the rear side of the LCD module.
[0009] The utility model describes an internal circulation dual-duct projector, wherein a window is provided on the outer shell corresponding to the light source assembly, and the light source assembly includes a light cup with a front sealing cover arranged on the window, and a light source body arranged at the rear end of the light cup; the projector also includes a heat exchange base attached to the light source body, and a third heat exchange fin arranged below the heat exchange base; the third heat exchange fin is provided in plurality and arranged side by side longitudinally, and the heat exchange base is connected to the plurality of the third heat exchange fins through a heat conductive member.
[0010] The internal circulation dual-duct projector described in the utility model, wherein the projector also includes a cooling fan for blowing air toward the third heat exchange fin for cooling, the cooling fan is located between the second heat exchange fin and the third heat exchange fin, and a plurality of guide vanes on the outer side of the second heat exchange fin are arranged horizontally side by side.
[0011] The internal circulation dual-duct projector described in the utility model, wherein the projector further includes a duct frame, and the plurality of third heat exchange fins are all arranged in the duct frame.
[0012] In the internal circulation dual-air duct projector described in the utility model, the air outlet at the rear end of the second air duct is horizontally aligned with the LCD module.
[0013] In the internal circulation dual-air duct projector described in the utility model, a cover plate is detachably provided on the top of the shell, and an opening corresponding to the LCD module for the LCD module to be moved in and out is provided on the cover plate.
[0014] The beneficial effect of the utility model is that when working, a circulating convection heat dissipation airflow can be formed on the outside of the LCD module through the two first air ducts and the first circulation fan. Furthermore, another circulating convection heat dissipation airflow on the outside of the LCD module is formed through the cooperation of the two second air ducts and the second circulation fan. At the same time, the two circulating heat dissipation airflows can also be interconnected to form a circulating convection, which can achieve faster and more timely heat dissipation for the LCD module, the reflector and the light source assembly inside the inner cavity of the shell, with high heat dissipation efficiency and excellent effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the utility model will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work:
[0016] Figure 1 It is a bird's-eye view of the utility model's internal circulation double-air duct projector.
[0017] Figure 2 yes Figure 1 Exploded top view.
[0018] Figure 3 yes Figure 1 Aerial view of the explosion.
[0019] Figure 4 yes Figure 3 Another perspective of the picture.
[0020] Figure 5 yes Figure 4 Bottom view of .
[0021] Figure 6 yes Figure 5 Another perspective of the picture.
[0022] Figure 7 It is a side view of the internal circulation double-air duct projector of the utility model.
[0023] Figure 8 yes Figure 7 AA section view.
[0024] Fig. 9 It is a top view of the internal circulation double-air duct projector of the utility model.
[0025] Fig.10 yes Fig. 9 BB cross-sectional view. DETAILED DESCRIPTION
[0026] The terms "first", "second", "third" and "fourth" etc. in the specification and claims of the present invention and the drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products or devices.
[0027] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.
[0028] "Multiple" means two or more. "And / or" describes the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the related objects are in an "or" relationship.
[0029] Moreover, the terms "up, down, left, right, upper end, lower end, longitudinal" etc. indicating directions are all based on the light emitting direction of the LCD module of this solution, that is, the light emitting direction of the light source assembly is the front side.
[0030] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the following will be described clearly and completely in combination with the technical solution in the embodiments of the utility model. Obviously, the described embodiments are partial embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the utility model.
[0031] The internal circulation double air duct projector of the preferred embodiment of the utility model is as follows Figure 1-10 As shown, the housing 10 includes a lens 20 and a light source assembly 30 that emits light inwardly. The lens 20 is arranged at a 90-degree angle with the light emitting direction of the light source assembly. A reflector 40 is arranged in the housing 10 to reflect light into the lens 20. The angles between the reflector 40, the lens 20 and the light emitting direction of the light source assembly 30 are 45 degrees. An LCD module 50 is arranged in the housing between the light source assembly 30 and the reflector 40. The left and right ends of the LCD module 50 are both provided with a first air duct 60 that connects the front and rear sides thereof, that is, the two ends of the first air duct 60 are respectively located on the side of the LCD module 50 facing the reflector 40 and the side facing the light source assembly. A first circulation fan 70 and a first heat exchange fin 80 are provided on the first air duct 60 located on the side of the LCD module 50 away from the lens 20. The first heat exchange fin 80 is embedded in the outer shell 10. After the first circulation fan 70 is started, the air on both sides of the LCD module 50 can circulate through the two first air ducts 60, and when the airflow flows through the first heat exchange fin 80, heat exchange can be generated to transfer the internal heat to the outside of the outer shell 10 for heat dissipation, thereby realizing the first heat dissipation of the LCD module 50.
[0032] Furthermore, the upper or lower end of the LCD module 50 is provided with a second air duct 90 connecting the front and rear sides thereof, and the second air duct 90 is provided with a second circulation fan 100 and a second heat exchange fin 110, and the second heat exchange fin 110 is embedded in the housing 10. Similarly, the cooperation of the second air duct 90 and the second circulation fan 100 can make the air on both sides of the LCD module 50 circulate, and when the air flows through the second heat exchange fin 110, the heat can be dissipated to the outside of the housing 10, thereby achieving a second heat dissipation. The first heat exchange fin 80 and the second heat exchange fin 110 are integrally connected or separately set. The integral connection method makes the heat transfer in the two circulating airflows more uniform and rapid, and can also reduce the assembly steps, while the separate setting method facilitates the separate processing and assembly operations.
[0033] During operation, a circulating convection heat dissipation airflow can be formed on the outside of the LCD module 50 through the two first air ducts 60 and the first circulating fan 70. Furthermore, another circulating convection heat dissipation airflow can be formed on the outside of the LCD module 50 through the cooperation of the two second air ducts 90 and the second circulating fan 100. At the same time, the two circulating heat dissipation airflows can also be interconnected to form a circulating convection, which can achieve faster and more timely heat dissipation for the LCD module 50, the reflector 40 and the light source assembly 30 inside the inner cavity of the shell 10, with high heat dissipation efficiency and excellent effect.
[0034] In this embodiment, the first circulation fan 70 is located on the back side of the reflector 40, so that the airflow can directly blow on the reflector 40, and can also cool the reflector 40, while also avoiding the situation where the airflow directly blows on the reflective surface of the reflector 40 to cause pollution. The first heat exchange fin 80 is located on the side of the first circulation fan 70 close to the LCD module 50; the second circulation fan 100 is located below the reflector 40, and the second heat exchange fin 110 is located on the side of the second circulation fan 100 close to the LCD module 50, that is, below the LCD module 50, so as to transfer the heat on the LCD module 50 to the first heat exchange fin 80 and the second heat exchange fin 110 through the circulating air at the shortest distance, thereby ensuring the timeliness and efficiency of heat dissipation.
[0035] In this embodiment, the first heat exchange fin 80 and the second heat exchange fin 110 are connected to form an L-shaped plate structure to fit the rear side wall and the bottom surface of the housing 10. The housing 10 is provided with a mounting position 120 that matches its contour, and the mounting position 120 is also L-shaped and its two ends are respectively located on the rear side wall and the bottom surface of the housing 10. After assembly, the L-shaped plate structure just completely covers the mounting position 120. The mounting position 120 can directly penetrate the housing 10, or it can not penetrate or adopt a setting method in which one end penetrates and the other end does not penetrate. For the trial method of not penetrating, it is necessary to open a perforation on the mounting position 120 for exposing the first heat exchange fin 80 and the second heat exchange fin 110 to the internal space of the housing 10, wherein a plurality of guide vanes 300 are vertically provided on the inner side wall and the outer side wall of the L-shaped plate structure. Preferably, the present solution adopts a mounting position 120 corresponding to the position of the first heat exchange fin 80 that directly penetrates the outer shell 10, and the guide plate 300a on the inner side of the first heat exchange fin 80 directly extends into the outer shell 10, and the direction of the guide plate 300a is parallel to the direction of the light passing through the LCD module 50, so that the air in the first air duct 60 is in contact with the guide plate 300a for a sufficiently long time when flowing through.
[0036] Furthermore, the position of the installation position 120 corresponding to the second heat exchange fin 110 is set inwardly concave, and a perforation 130 is opened at the position. The perforation 130 is located on the rear side of the LCD module 50, and the guide plate 300b on the inner side of the second heat exchange fin 110 is opposite to the perforation 130. The direction of the guide plate 300b is consistent with the direction of the guide plate corresponding to the first heat exchange fin 80. The concave structure is designed to block the front and rear ends of the guide plate on the second heat exchange fin 110. Another through hole 140 is provided on the front inner wall of the mounting position 120 corresponding to the second circulation fan 100. When in operation, the airflow passes through the through hole 130 away from the second circulation fan 100 and enters the guide plate corresponding thereto. Due to the guiding effect of the second heat exchange fin 110, the airflow moves forward and enters the second circulation fan 100 through the through hole 140 close to the second circulation fan 100 and enters the housing 10 again, then blows toward the side end of the reflector 40 and further enters the first air duct 60 for circulation and enters the rear side of the LCD module 50.
[0037] In the present embodiment, two air vents are provided at one end of the first air duct 60 close to the LCD module 50 and are arranged side by side front to back. One of the two air vents 61 is horizontally aligned with the LCD module 50. Through the air vent 61, a flowing airflow can be formed inside the LCD module 50 to dissipate heat from the inside of the LCD module 50. The other air vent 62 is located at the rear side of the LCD module 50 to dissipate heat from the light source assembly 30, thereby reducing the heat transferred from the light source assembly 30 to the LCD module 50.
[0038] In this embodiment, a window 150 is provided on the housing 10 corresponding to the light source assembly 30, and the light source assembly 30 includes an optical cup 31 with a front sealing cover provided on the window 150, and a light source body 32 provided at the rear end of the optical cup 31. A front Fresnel lens 160 is provided at the front end of the optical cup 31, and the front Fresnel lens 160 can dissipate heat through the airflow formed by the air outlet 62 of the first air duct 60 located at the rear side of the LCD module 50. The projector also includes a heat exchange base 170 attached to the light source body 32, and a third heat exchange fin 180 provided below the heat exchange base 170. A plurality of third heat exchange fins 180 are provided and arranged side by side in the longitudinal direction, and the heat exchange base 170 is connected to the plurality of third heat exchange fins 180 through a heat conductive member 190, so as to make full use of the space below the heat exchange base 170.
[0039] In this embodiment, the projector also includes a cooling fan 200 for blowing air toward the third heat exchange fins 180 for cooling. The cooling fan 200 is located between the second heat exchange fins 110 and the third heat exchange fins 180. A plurality of guide fins on the outside of the second heat exchange fins 110 are arranged horizontally side by side to form an air duct with the third heat exchange fins 180 for air to circulate back and forth. When the cooling fan 200 blows air toward the third heat exchange fins 180, the air around the guide fins on the outside of the second heat exchange fins 110 is also attracted by the cooling fan 200 and flows toward the third heat exchange fins 180, thereby achieving the purpose of dissipating heat for the two structures through the cooling fan 200.
[0040] In this embodiment, the projector further includes a duct frame 210, and a plurality of third heat exchange fins 180 are disposed in the duct frame 210, so that the airflow passing through the third heat exchange fins 180 is more concentrated, thereby ensuring the convection flow rate.
[0041] In this embodiment, the air port 91 at the rear end of the second air duct 90 is horizontally aligned with the LCD module 50 to cool down the front end of the LCD module 50 and the optical cup 31 .
[0042] In this embodiment, a cover plate 220 is detachably provided on the top of the housing 10 for easy disassembly and maintenance. An opening 230 is provided on the cover plate 220 corresponding to the LCD module 50 for its entry and exit, so as to facilitate the disassembly operation of the LCD module 50.
[0043] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the utility model.
Claims
1. An internal circulation dual-duct projector, characterized in that: The invention comprises a shell, on which a lens and a light source assembly emitting light inward are provided; a reflector for reflecting light into the lens is provided in the shell; an LCD module is provided in the shell between the light source assembly and the reflector; first air ducts connecting the front and rear sides of the LCD module are provided at both left and right ends, a first circulation fan and a first heat exchange fin are provided on the first air duct located on the side of the LCD module away from the lens, and the first heat exchange fin is embedded in the shell; a second air duct connecting the front and rear sides of the LCD module is provided at the upper or lower end, a second circulation fan and a second heat exchange fin are provided on the second air duct, and the second heat exchange fin is embedded in the shell, and the first heat exchange fin and the second heat exchange fin are connected in one piece or separately.
2. The internal circulation dual-duct projector according to claim 1, characterized in that: The first circulation fan is located on the back side of the reflector, and the first heat exchange fin is located on the side of the first circulation fan close to the LCD module; the second circulation fan is located below the reflector, and the second heat exchange fin is located on the side of the second circulation fan close to the LCD module.
3. The internal circulation dual-air duct projector according to claim 2, characterized in that: The first heat exchange fin and the second heat exchange fin are connected to form an L-shaped plate structure. A mounting position matching the contour of the L-shaped plate structure is provided on the outer shell. A plurality of guide vanes are vertically provided on the inner side wall and the outer side wall of the L-shaped plate structure.
4. The internal circulation dual-air duct projector according to claim 2 or 3, characterized in that: The first air duct is provided with two air outlets at one end close to the LCD module and arranged side by side front and back, one of the air outlets is horizontally aligned with the LCD module, and the other air outlet is located at the rear side of the LCD module.
5. The internal circulation dual-air duct projector according to claim 2 or 3, characterized in that: A window is provided on the shell corresponding to the light source assembly, and the light source assembly includes a light cup with a front sealing cover provided on the window, and a light source body provided at the rear end of the light cup; the projector also includes a heat exchange base attached to the light source body, and a third heat exchange fin provided below the heat exchange base; a plurality of the third heat exchange fins are provided and arranged side by side longitudinally, and the heat exchange base is connected to the plurality of the third heat exchange fins through a heat conductive member.
6. The internal circulation dual-duct projector according to claim 5, characterized in that: The projector further comprises a cooling fan for blowing air toward the third heat exchange fins to cool them down. The cooling fan is located between the second heat exchange fins and the third heat exchange fins. A plurality of guide fins outside the second heat exchange fins are arranged horizontally side by side.
7. The internal circulation dual-duct projector according to claim 5, characterized in that: The projector further comprises a duct frame, and the plurality of third heat exchange fins are all arranged in the duct frame.
8. The internal circulation dual-duct projector according to claim 1, characterized in that: The air outlet at the rear end of the second air duct is horizontally aligned with the LCD module.
9. The internal circulation dual-duct projector according to claim 1, characterized in that: A cover plate is detachably provided on the top of the housing, and an opening is provided on the cover plate corresponding to the LCD module for the LCD module to be moved in and out.