Projector and internal and external heat transfer dustproof heat dissipation structure thereof

Abstract

The utility model discloses a projector internal and external heat transfer dustproof heat radiation structure and projector, the dustproof heat radiation structure is used for the projector, the projector is internally provided with a to-be-radiated element, the internal and external heat transfer dustproof heat radiation structure comprises a housing, a closed circulation heat radiation cavity, a heat radiation module, a heat radiation module and a heat radiation module, an inner circulating fan is arranged in the circulating heat dissipation cavity; the first radiator comprises a first heat dissipation part, a second heat dissipation part and a heat transfer plate arranged between the first heat dissipation part and the second heat dissipation part in a tightly attached mode, the heat transfer plate is installed on the shell to isolate the circulation heat dissipation cavity from the outside, the first heat dissipation part is located in the circulation heat dissipation cavity, and the second heat dissipation part is located in the circulation heat dissipation cavity. And the second heat dissipation part is positioned outside the circulating heat dissipation cavity. According to the utility model, dust can be prevented from entering the shell to avoid the element to be cooled in the lead, and heat generated by the element to be cooled in the lead can be dissipated out of the shell.

Description

Technical Field

[0001] This utility model relates to the field of projector technology, and in particular to an internal and external heat transfer, dustproof and heat dissipation structure for a projector and a projector. Background Technology

[0002] When a projector is working, the LCD screen inside it releases a lot of heat. Therefore, projectors usually have a heat dissipation device, such as a fan, that draws air from the outside to cool the screen and internal components.

[0003] However, in existing technology, the fan is connected to the outside world. When using outside air to cool the internal components of the projector, dust and other impurities in the outside air will also be brought into the projector. As a result, after a period of use, the internal components, such as the display screen, will be covered with dust. Once the display screen is covered with dust, it will affect the clarity of the image on the projection screen, thereby affecting the projection effect of the projector and affecting the user's viewing and experience.

[0004] Therefore, existing technologies need to be improved. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide an internal and external heat transfer and dust prevention structure for a projector and a projector, which aims to prevent dust from entering the housing and thus avoid the heat dissipation components inside the lead wires, and to dissipate the heat generated by the internal heat dissipation components to the outside of the housing.

[0006] To achieve the above objectives, this utility model proposes an internal and external heat transfer and dustproof heat dissipation structure for a projector, wherein the projector contains components to be cooled, and the internal and external heat transfer and dustproof heat dissipation structure includes:

[0007] case;

[0008] A sealed circulating heat dissipation cavity is provided inside the housing, and an internal circulating fan is provided inside the circulating heat dissipation cavity;

[0009] The first radiator includes a first heat dissipation part, a second heat dissipation part, and a heat transfer plate disposed close to the first heat dissipation part and the second heat dissipation part. The heat transfer plate is installed on the housing to isolate the circulating heat dissipation cavity from the outside. The first heat dissipation part is located inside the circulating heat dissipation cavity, and the second heat dissipation part is located outside the circulating heat dissipation cavity.

[0010] In some embodiments, an external heat dissipation cavity is further provided inside the housing. The air inlet and air outlet of the external heat dissipation cavity are both connected to the outside. An external heat dissipation fan is installed at the air inlet of the external heat dissipation cavity, and a second heat dissipation part is installed inside the external heat dissipation cavity.

[0011] In some embodiments, the housing has a mounting portion on the inner wall of the circulating heat dissipation cavity, and the heat dissipation element is mounted on the mounting portion to form a cavity structure for air to flow through the circulating heat dissipation cavity.

[0012] In some embodiments, the heat dissipation element includes a front lens, a display screen, and a rear lens arranged sequentially at intervals, with the display screen located in the middle of the cavity structure.

[0013] In some embodiments, one end of the cavity structure is connected to the air outlet of the internal circulation fan, and the other end of the cavity structure is connected to the first heat dissipation unit.

[0014] In some embodiments, the internal circulation fan is located at the top of the circulation cooling cavity, and the first heat dissipation part is located at the bottom of the circulation cooling cavity and abuts against the lower end of the mounting part.

[0015] In some embodiments, a second heat sink is further provided in the external heat dissipation cavity, and the second heat sink abuts against the LED light source module of the projector.

[0016] In some embodiments, the second heat sink includes a third heat sink, a fourth heat sink, and a heat transfer rod connecting the third heat sink and the fourth heat sink. The third heat sink is in close contact with the LED light source module and conducts heat to the fourth heat sink through the heat transfer rod.

[0017] In some embodiments, a notch is provided at the lower part of the housing, and the second heat dissipation part and the fourth heat dissipation part are both located at the lower part of the housing and protrude outward from the notch.

[0018] This utility model also proposes a projector, which includes the aforementioned internal and external heat transfer, dust prevention and heat dissipation structure.

[0019] It should be understood that, within the scope of this utility model, the above-mentioned technical features of this utility model and the technical features specifically described below (such as embodiments) can be combined with each other to form new or preferred technical solutions. Due to space limitations, they will not be described in detail here.

[0020] The beneficial effects of this utility model are:

[0021] Because this utility model employs a sealed circulating heat dissipation cavity within the housing, and an internal circulating fan within the cavity, the air circulates within the cavity. During this circulation, the heat generated by the components to be cooled inside the projector is carried to the first heat dissipation section within the cavity. The first heat dissipation section then conducts the heat to the second heat dissipation section outside the cavity via a heat transfer plate, thereby transferring the heat from the cavity to the outside and dissipating it. This prevents external dust from entering the cavity, providing dust protection for the components to be cooled, while simultaneously achieving heat dissipation through internal and external conduction. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0023] Figure 1 This is a structural schematic diagram of a first embodiment of the projector of this utility model.

[0024] Figure 2 for Figure 1 A cross-sectional schematic diagram showing the internal and external heat transfer, dust prevention, and heat dissipation structure of this utility model.

[0025] Figure 3 for Figure 2 A partial structural diagram.

[0026] Figure 4 This is a schematic diagram of the structure of the first radiator of this utility model.

[0027] Figure 5 This is a schematic diagram of the first cross-section of the external heat dissipation cavity of this utility model.

[0028] Figure 6 This is a second cross-sectional schematic diagram of the external heat dissipation cavity of this utility model.

[0029] Figure 7 This is a schematic diagram of the structure of the second radiator of this utility model.

[0030] Figure 8 for Figure 1 A schematic diagram of the structure from another angle.

[0031] Explanation of reference numerals in the attached figures:

[0032] 100-Heat dissipation structure, 1-Shell, 11-Notch, 2-Circulating heat dissipation cavity, 3-Internal circulation fan, 31-Air outlet, 32-Air inlet, 4-First heat sink, 41-First heat dissipation section, 42-Second heat dissipation section, 43-Heat transfer plate, 401-Heat dissipation fins, 5-External heat dissipation channel, 51-Air inlet, 52-Air outlet, 6-External heat dissipation fan, 7-Mounting section, 71-Upper mounting section, 72-Lower mounting section, 8-Cavity structure, 9-Second heat sink, 91-Third heat dissipation section, 92-Fourth heat dissipation section, 93-Heat transfer rod, 200-Projector, 201-LED light source module, 202-Projection light output section, 203-Light source cavity, 300-Component to be cooled, 301-Front lens, 302-Display screen, 303-Rear lens. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0035] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0036] Example 1, please refer to Figures 1 to 3 This utility model proposes an internal and external heat transfer and dustproof heat dissipation structure 100 for a projector 200. The projector 200 contains a heat-dissipating component 300. The internal and external heat transfer and dustproof heat dissipation structure 100 includes: a housing 1, which can be made of materials such as plastic. Multiple cavities can be provided inside the housing 1 for installing components or for light transmission, such as... Figure 2As shown, the housing 1 of this utility model is provided with a light source cavity 203 for transmitting the light emitted by the LED light source to components such as a display screen. In this embodiment, a sealed circulating heat dissipation cavity 2 is provided inside the housing 1, and an internal circulating fan 3 is provided inside the circulating heat dissipation cavity 2. The component to be cooled 300 is disposed inside the circulating heat dissipation cavity 2 or in a cavity communicating with the circulating heat dissipation cavity 2. In this embodiment, as... Figure 2 As shown, the heat-dissipating element 300 is located within the circulating heat dissipation cavity 2, which is located on the right side of the housing 1, while the light source cavity 203 is located on the left side of the housing 1. The circulating heat dissipation cavity 2 and the light source cavity 203 are separated by the heat-dissipating element 300. An internal circulating fan 3 is located within the circulating heat dissipation cavity 2. During its rotation, the internal circulating fan 3 can move the air within the circulating heat dissipation cavity 2, causing it to circulate. This airflow carries the heat generated by the heat-dissipating element 300 within the housing 1 to the first heat sink 4.

[0037] like Figures 2 to 4 As shown, the first radiator 4 in this embodiment includes a first heat dissipation part 41, a second heat dissipation part 42, and a heat transfer plate 43 disposed close to the first heat dissipation part 41 and the second heat dissipation part 42. The heat transfer plate 43 is mounted on the housing 1 to isolate the circulating heat dissipation cavity 2 from the outside. The first heat dissipation part 41 is located inside the circulating heat dissipation cavity 2, and the second heat dissipation part 42 is located outside the circulating heat dissipation cavity 2. That is, part of the first radiator 4 in this embodiment is located inside the circulating heat dissipation cavity 2, and part is located outside the circulating heat dissipation cavity 2. The first heat dissipation part 41 inside the circulating heat dissipation cavity 2 conducts the heat generated by the heat-dissipating element 300 to the second heat dissipation part 42 located outside the circulating heat dissipation cavity 2 through the heat transfer plate 43, and then conducts it to the outside air.

[0038] In this way, the internal and external heat transfer and dustproof heat dissipation structure 100 of this utility model can drive the air flow in the sealed cavity of the circulating heat dissipation cavity 2, and conduct the heat generated by the heat dissipation component 300 in the circulating heat dissipation cavity 2 to the outside of the circulating heat dissipation cavity 2 through the internal and external heat transfer method. At the same time, since the outside air will not enter the circulating heat dissipation cavity 2 during the heat dissipation process, it plays a role in dust prevention.

[0039] Specifically, such as Figure 4As shown, the first heat sink 4 in this embodiment consists of three parts: a first heat dissipation section 41, a second heat dissipation section 42, and a heat transfer plate 43. Both the first heat dissipation section 41 and the second heat dissipation section 42 are composed of multiple spaced-apart heat dissipation fins 401, which can be made of aluminum alloy. When air flows through the gap formed by two adjacent heat dissipation fins 401 in the first heat dissipation section 41, heat is conducted to the heat dissipation fins 401. The heat dissipation fins 401 then conduct the heat to the heat transfer plate 43, which in turn conducts the heat to the heat dissipation fins 401 in the second heat dissipation section 42. When outside air flows through the heat dissipation fins 401 in the second heat dissipation section 42, it carries away the heat from the fins 401, thus completing the entire heat dissipation process. In this embodiment, the multiple heat dissipation fins 401 of the first heat dissipation section 41 are arranged vertically at intervals, so that air in the circulating heat dissipation cavity 2 enters from the top of the first heat dissipation section 41 and exits from the right side of the first heat dissipation section 41. The multiple heat dissipation fins 401 of the second heat dissipation section 41 are arranged horizontally at intervals so that outside air flows in and out from the front and rear ends of the second heat dissipation section 41.

[0040] In this embodiment, as Figure 2 and Figure 3 As shown, the housing 1 has a mounting portion 7 on the inner wall of the circulating heat dissipation cavity 2. The heat dissipation element mounting 300 forms a cavity structure 8 behind the mounting portion 7 to allow air to flow through the circulating heat dissipation cavity 2. Specifically, in this embodiment, the mounting portion 7 includes an upper mounting portion 71 located above and a lower mounting portion 72 located below. The heat dissipation element mounting 300 includes multiple components, and the upper and lower ends of the heat dissipation element mounting 300 are respectively mounted on the upper mounting portion 71 and the lower mounting portion 72. In this embodiment, both the upper mounting portion 71 and the lower mounting portion 72 are configured as slots, and the upper and lower ends of the heat dissipation element mounting 300 are inserted into the slots. Figure 3 As shown, the heat dissipation element 300 forms a cavity structure 8 on the left side of the circulating heat dissipation cavity 2. This cavity structure 8 constitutes part of the air circulation path within the circulating heat dissipation cavity 2. In this way, the air in the circulating heat dissipation cavity 2 will directly blow onto the heat dissipation element 300 during the circulation process. The flowing air has a large contact area with the heat dissipation element 300 and at the same time flows quickly to carry away the heat. This heat dissipation effect is better than the heat dissipation effect when the heat dissipation element 300 is not in the air flow path.

[0041] Specifically, the heat dissipation component 300 in this embodiment includes a front lens 301, a display screen 302, and a rear lens 303 arranged sequentially at intervals, with the display screen 302 located in the middle of the cavity structure 8. For example... Figure 3As shown, the front lens 301 and the rear lens 303 form the two cavity walls of the cavity structure 8, and the display screen 302 is located in the middle of the two cavity walls. The display screen 302 is the main heat-generating element in the projector 200. After the display screen 302 is placed in the middle of the cavity structure 8, the flowing air can dissipate heat from both the left and right sides of the display screen 302 simultaneously, improving the heat dissipation effect. In this embodiment, one end of the cavity structure 8 is connected to the air outlet 31 of the internal circulation fan 3, and the other end of the cavity structure 8 is connected to the first heat dissipation part 41. Figure 3 As shown, the air outlet 31 of the internal circulation fan 3 blows air directly onto the upper end of the cavity structure 8, and then blows the heat from the display screen 302, the front lens 301, and the rear lens 303 down to the first heat dissipation part 41. This structural arrangement is beneficial for heat dissipation.

[0042] In this embodiment, the internal circulation fan 3 is located at the top of the circulation heat dissipation cavity 2, and the first heat dissipation part 41 is located at the bottom of the circulation heat dissipation cavity 2 and abuts against the lower end of the mounting part 7. Figure 3 As shown, the internal circulation fan 3 is located at the top of the internal circulation heat dissipation cavity 2 of the housing 1. Its air inlet 32 ​​faces the cavity below, and its air outlet 31 faces to the left and towards the upper end of the component 300 to be cooled. When the internal circulation fan 3 is working, the air on the right side of the circulation heat dissipation cavity 2 is drawn upward, enters the internal circulation fan 3 from the lower end of the internal circulation fan 3, and is then blown out from the left side of the internal circulation fan 3, directly into the upper end of the cavity structure 8, and then enters the upper end of the first heat dissipation part 41 through the cavity structure 8. After heat exchange in the first heat dissipation part 41, the air enters the right side of the circulation heat dissipation cavity 2 from the right side of the first heat dissipation part 41, and then enters the air inlet 32 ​​of the internal circulation fan 3 again, and so on.

[0043] Since the upper end of the first heat dissipation part 41 directly abuts against the lower end of the mounting part 7, namely the lower mounting part 72, in addition to air cooling, heat on the heat dissipation component 300 can be quickly transferred to the first heat dissipation part 41 through heat conduction, thereby improving the heat dissipation effect.

[0044] Preferably, such as Figure 5 As shown, in this embodiment, an external heat dissipation cavity 5 is also provided inside the housing 1. The air inlet 51 and air outlet 52 of the external heat dissipation cavity 5 are both connected to the outside. An external cooling fan 6 is installed at the air inlet 51 of the external heat dissipation cavity 5, and the second heat dissipation part 42 is installed inside the external heat dissipation cavity 5. The external heat dissipation cavity 5 is another cavity located inside the housing 1, separated from and not connected to the circulating heat dissipation cavity 2. In this embodiment, the external heat dissipation cavity 5 is an L-shaped cavity, with one part located on the side inside the housing 1 and the other part passing through the bottom inside the housing 1. When the external cooling fan 6 is working, as... Figure 5In this embodiment, outside air enters through the air inlet 51 on the upper left side of the housing 1, then flows out below the external cooling fan 6 into the external cooling cavity 5. From there, it flows from left to right through the second heat dissipation section 42 in the lower part of the housing 1, carrying away heat from the second heat dissipation section 42 and flowing into the atmosphere through the air outlet 52 on the right side for rapid heat dissipation. In other words, this embodiment specifically adds an external cooling fan 6 to the second heat dissipation section 42 for air cooling, which is much more effective than allowing the second heat dissipation section 42 to cool naturally, greatly improving the overall heat dissipation effect of the internal and external heat transfer and dustproof heat dissipation structure 100.

[0045] Furthermore, combined Figure 2 , Figure 6 and Figure 7 As shown, a second heat sink 9 is also provided inside the external heat dissipation cavity 5 of this embodiment. The second heat sink 9 abuts against the LED light source module 201 of the projector 200. The LED light source module 201 is located on the left side of the light source cavity 203, and the heat dissipation element 300 is located on the right side of the light source cavity 203. The LED light source module 201 also generates heat when it is working. The provision of the second heat sink 9 can effectively facilitate the airflow in the external heat dissipation cavity 5 to dissipate heat from the LED light source module 201 and improve the service life of the LED light source module 201.

[0046] Specifically, the second heat sink 9 in this embodiment includes a third heat sink 91, a fourth heat sink 92, and a heat transfer rod 93 connecting the third heat sink 91 and the fourth heat sink 92. The third heat sink 91 is in close contact with the LED light source module 201 and conducts heat to the fourth heat sink 92 through the heat transfer rod 93. The fourth heat sink 92 is located in the lower part of the housing 1 and within the external heat dissipation cavity 5. Thus, when the external cooling fan 6 is working, the airflow from the external heat dissipation fan 6 will also pass through the fourth heat sink 92 in the external heat dissipation cavity 5, carrying away the heat from the fourth heat sink 92 to dissipate heat from the LED light source module 201. The fourth heat sink 92 is also composed of multiple horizontally spaced heat dissipation fins.

[0047] In this embodiment, the external heat dissipation cavity 5 is equipped with both the second heat dissipation unit 42 and the fourth heat dissipation unit 92, which are arranged side by side in the bottom of the external heat dissipation cavity 5 inside the housing 1. In this way, the second heat dissipation unit 42 and the fourth heat dissipation unit 92 can share the external cooling fan 6.

[0048] like Figure 1 As shown in the diagram, the lower part of the housing 1 in this embodiment has a notch 11, and the second heat dissipation part 42 and the fourth heat dissipation part 92 are both located at the lower part of the housing 1 and protrude outward from the notch 11. In this way, the second heat dissipation part 42 and the fourth heat dissipation part 92 can be directly exposed to the external atmospheric environment and can directly exchange heat with the atmosphere, thereby improving the heat dissipation effect.

[0049] Please continue to refer to this. Figure 1 and Figure 8 This utility model also proposes a projector 200, which includes the aforementioned internal and external heat transfer and dustproof heat dissipation structure 100. The projector 200 contains the internal and external heat transfer and dustproof heat dissipation structure 100, the heat-dissipating element 300, the LED light source module 201, and the light source cavity 203, etc. A projection light-emitting part 202 is also provided on the side wall of the housing 1, which projects light onto the screen. Because the projector 200 has the aforementioned internal and external heat transfer and dustproof heat dissipation structure 100, the projector 200 of this utility model has the aforementioned dustproof and heat dissipation effects, which will not be elaborated further here.

[0050] The above description is merely an example to clearly illustrate the present utility model and is not intended to limit the patent scope of the present utility model. It is impossible to exhaustively list all the embodiments here. All equivalent structural transformations made using the content of the technical solution of the present utility model under the concept of the present utility model, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. An internal and external heat transfer and dustproof heat dissipation structure for a projector, used in a projector, wherein the projector contains a component to be cooled, characterized in that, The internal and external heat transfer, dust prevention, and heat dissipation structure includes: case; A sealed circulating heat dissipation cavity is provided inside the housing, and an internal circulating fan is provided inside the circulating heat dissipation cavity; The first radiator includes a first heat dissipation part, a second heat dissipation part, and a heat transfer plate disposed close to the first heat dissipation part and the second heat dissipation part. The heat transfer plate is installed on the housing to isolate the circulating heat dissipation cavity from the outside. The first heat dissipation part is located inside the circulating heat dissipation cavity, and the second heat dissipation part is located outside the circulating heat dissipation cavity.

2. The dustproof heat radiation structure for a projector according to claim 1, wherein The housing is also provided with an external heat dissipation cavity. The air inlet and air outlet of the external heat dissipation cavity are both connected to the outside. An external heat dissipation fan is installed at the air inlet of the external heat dissipation cavity. The second heat dissipation unit is installed inside the external heat dissipation cavity.

3. The dustproof heat radiation structure of the projector according to claim 1, wherein The housing has a mounting part on the inner wall of the circulating heat dissipation cavity. After the heat dissipation element is installed in the mounting part, it forms a cavity structure for the air in the circulating heat dissipation cavity to flow through.

4. The dust-proof heat radiation structure of the projector according to claim 3, wherein The heat dissipation component includes a front lens, a display screen, and a rear lens arranged at intervals in sequence, with the display screen located in the middle of the cavity structure.

5. The dust-proof heat radiation structure of the projector according to claim 3, wherein One end of the cavity structure is connected to the air outlet of the internal circulation fan, and the other end of the cavity structure is connected to the first heat dissipation part.

6. The dust-proof heat radiation structure of the projector according to claim 3, wherein The internal circulation fan is located at the top of the circulation heat dissipation cavity, and the first heat dissipation part is located at the bottom of the circulation heat dissipation cavity and abuts against the lower end of the mounting part.

7. The dust-proof heat radiation structure of the projector according to claim 2, wherein A second heat sink is also provided inside the external heat dissipation cavity, and the second heat sink abuts against the LED light source module of the projector.

8. The dust-proof heat radiation structure of the projector according to claim 7, wherein The second heat sink includes a third heat sink, a fourth heat sink, and a heat transfer rod connecting the third heat sink and the fourth heat sink. The third heat sink is in close contact with the LED light source module and conducts heat to the fourth heat sink through the heat transfer rod.

9. The dust-proof heat radiation structure of the projector according to claim 8, wherein The lower part of the housing is provided with a notch, and the second heat dissipation part and the fourth heat dissipation part are both located in the lower part of the housing and protrude outward from the notch.

10. A projector characterized by comprising: It includes the internal and external heat transfer, dust prevention and heat dissipation structure as described in any one of claims 1-9.

Images