Active heat dissipation closed projector

Abstract

The utility model discloses an active heat dissipation closed projector, which relates to the technical field of projector manufacturing, and comprises a display screen light machine, a display screen radiator, a closed inner cavity and an inner circulation flow guide fan, the display screen radiator comprises an inner heat dissipation part and an outer heat dissipation part which are integrally arranged, the inner heat dissipation part is positioned in the closed inner cavity, and the outer heat dissipation part is positioned in the closed inner cavity. The outer heat dissipation part is located outside the closed inner cavity, the inner circulation flow guide fan guides air flow between the display screen and the inner heat dissipation part in a reciprocating mode, and a display screen heat dissipation air blower which is communicated with the outer heat dissipation part and used for blowing air to the outer heat dissipation part for heat dissipation is arranged outside the closed inner cavity. The heat of the display is guided to the inner heat dissipation part along the closed inner cavity through the inner circulation flow guide fan, the heat of the inner heat dissipation part is diffused to the outer heat dissipation part, and the display screen heat dissipation air blower is started to dissipate heat to the outer heat dissipation part, so that the display screen is subjected to heat dissipation, and a good heat dissipation effect is achieved; therefore, dust or filth is not easy to enter the inside of the ray machine to be adsorbed on the display screen to influence the projection effect of the projector.

Description

Technical Field

[0001] The utility model relates to the technical field of projector manufacturing, in particular to an actively cooled enclosed projector. Background Art

[0002] With the continuous development of modern projector technology, projectors are becoming more and more delicate and compact, so they are loved by people. Projectors are widely used in families, offices, schools and entertainment venues. In a projector, a light output device, such as a projector optical engine, is required to provide a light source for projection. Since the optical engine is a high-power device, it has a high temperature and a large amount of heat generation during operation, which easily causes the temperature of the working environment of the optical engine to be too high. If the heat is not dissipated in time, the electrical components in the projector may be damaged, or the service life of the projector may be shortened, affecting the normal use of the projector.

[0003] In order to facilitate heat dissipation, in the existing technology, projectors use open optical engines or semi-open optical engines. When dissipating heat, since the optical engine of the projector is in an open environment, dust or dirt is likely to enter the interior of the optical engine, resulting in poor brightness, clarity and stability, and affecting the projection effect. Summary of the Utility Model

[0004] The utility model provides an actively cooled enclosed projector to prevent dust or dirt from easily entering the interior of the optical engine during the operation of the projector while achieving a good heat dissipation effect.

[0005] To achieve the above object, the utility model provides the following technical solution: An actively cooled enclosed projector includes a display optical engine and a display radiator. The display optical engine includes a closed inner cavity, a display disposed in the closed inner cavity, and an internal circulation guide fan disposed in the closed inner cavity. The display radiator includes an integrally provided internal heat dissipation part and an external heat dissipation part. The internal heat dissipation part is located inside the closed inner cavity, and the external heat dissipation part is located outside the closed inner cavity. The internal circulation guide fan is used to reciprocally guide the airflow between the display and the internal heat dissipation part. A display heat dissipation blower for blowing air to the external heat dissipation part for heat dissipation is provided outside the closed inner cavity and is connected to the external heat dissipation part.

[0006] In the actively cooled enclosed projector as described above, a first guide channel and a second guide channel that are connected are provided inside the closed inner cavity. The first guide channel is connected to the air outlet of the internal circulation guide fan, the second guide channel is connected to the internal heat dissipation part, the air inlet of the internal circulation guide fan is connected to the internal heat dissipation part, and the internal circulation guide fan, the first guide channel, the second guide channel and the internal heat dissipation part form a circulating heat dissipation channel. The display is disposed in the first guide channel.

[0007] The enclosed projector with active cooling as described above, wherein the display optical engine includes a fixed housing, the enclosed inner cavity is arranged inside the fixed housing, the display optical engine further includes a rear Fresnel member and a front Fresnel member arranged at intervals inside the enclosed inner cavity, the display screen is arranged between the rear Fresnel member and the front Fresnel member, a first flow guide channel is formed between the rear Fresnel member and the front Fresnel member, and a second flow guide channel is formed between the front Fresnel member and the side wall of the fixed housing.

[0008] The enclosed projector with active cooling as described above, wherein the internal circulation guide fan is arranged on the upper side of the internal heat dissipation part, and a first corner flow guide member for separating the first flow guide channel and the second flow guide channel and guiding the air flow to the first flow guide channel is arranged at the air outlet of the internal circulation guide fan.

[0009] The enclosed projector with active cooling as described above, wherein the internal heat dissipation part seals the bottom of the fixed housing, and a heat dissipation fixing part located between the internal heat dissipation part and the external heat dissipation part and used for fixedly connecting with the fixed housing is arranged on the display screen radiator.

[0010] The enclosed projector with active cooling as described above further includes a light source component, the light source component is arranged on the side wall of the fixed housing, a light source radiator attached to the light source component is arranged outside the fixed housing, and a light source heat dissipation blower for blowing air to cool the light source radiator is arranged.

[0011] The enclosed projector with active cooling as described above, wherein the light source heat dissipation blower is vertically arranged relative to the light source radiator, and a second corner flow guide member for communicating the light source heat dissipation blower and the light source radiator is arranged between the light source heat dissipation blower and the light source radiator.

[0012] The enclosed projector with active cooling as described above, wherein at least a first housing mounting opening and a second housing mounting opening are arranged on the fixed housing, and the opening direction of the first housing mounting opening is perpendicular to the opening direction of the second housing mounting opening.

[0013] The enclosed projector with active cooling as described above, wherein a light bucket and a reflection glass are arranged inside the enclosed inner cavity, a lens is arranged on the side wall of the fixed housing, the light bucket is arranged between the light source component and the rear Fresnel member, the reflection glass is arranged between the front Fresnel member and the lens, and the lens and the light source radiator are located on the same side of the fixed housing.

[0014] The enclosed projector with active cooling as described above, wherein the light source component is an LED lamp, and both the display screen radiator and the light source radiator are heat dissipation aluminum profiles.

[0015] Compared with the prior art, the beneficial effects of the technical solution are:

[0016] After adopting the structure of the present utility model, the heat of the display is guided to the inner heat dissipation part along the closed inner cavity by the inner circulation guide fan, the heat of the inner heat dissipation part diffuses to the outer heat dissipation part, and the outer heat dissipation part is cooled by starting the display screen cooling blower, so that the display screen is cooled, and has a good cooling effect. At the same time, the display screen is arranged in the closed inner cavity, so that dust or dirt is not easy to enter the optical machine and adsorb on the display screen, affecting the projection effect of the projector.

[0017] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present utility model. Brief Description of the Drawings

[0018] 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 drawings in the following description 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.

[0019] Figure 1 is the exploded structural schematic diagram of the present utility model;

[0020] Figure 2 is the sectional structural schematic diagram of the present utility model;

[0021] Figure 3 is the structural schematic diagram of the fixed shell of the present utility model;

[0022] Figure 4 is the three-dimensional structural diagram of the present utility model; Detailed Description of the Embodiments

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than 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 efforts shall fall within the protection scope of the present utility model.

[0024] Such as Figures 1 to 4An active heat dissipation closed projector as shown includes a display optical engine 1, and also includes a display radiator 2. The display optical engine 1 includes a closed inner cavity 11, a display screen 12 disposed in the closed inner cavity 11, and an internal circulation guide fan 3 disposed in the closed inner cavity 11. The display radiator 2 includes an integrated internal heat dissipation part 21 and an external heat dissipation part 22. The internal heat dissipation part 21 is located inside the closed inner cavity 11, and the external heat dissipation part 22 is located outside the closed inner cavity 11. The internal circulation guide fan 3 is used to reciprocally guide air flow between the display screen 12 and the internal heat dissipation part 21. An external display heat dissipation blower 4 is provided outside the closed inner cavity 11 and is connected to the external heat dissipation part 22 for blowing air to cool the external heat dissipation part 22. After adopting the structure of the present utility model, the heat of the display 12 is guided along the closed inner cavity 11 to the internal heat dissipation part 21 through the internal circulation guide fan 3. The heat of the internal heat dissipation part 21 diffuses to the external heat dissipation part 22. By starting the display heat dissipation blower 4 to dissipate heat from the external heat dissipation part 22, the display screen 12 is cooled, having a good heat dissipation effect. At the same time, the display screen is disposed in the closed inner cavity 11, so that dust or dirt is not easily introduced into the inside of the optical engine and adsorbed on the display screen 12 to affect the projection effect of the projector.

[0025] As a specific implementation manner rather than a limitation, in order to better guide the air flow inside the closed inner cavity 11 and have a higher heat dissipation efficiency for the display screen 12, a first guide channel 51 and a second guide channel 52 are provided and connected inside the closed inner cavity 11. The first guide channel 51 is connected to the air outlet 31 of the internal circulation guide fan 3, the second guide channel 52 is connected to the internal heat dissipation part 21, the air inlet 32 of the internal circulation guide fan 3 is connected to the internal heat dissipation part 21, and the internal circulation guide fan 3, the first guide channel 51, the second guide channel 52, and the internal heat dissipation part 21 form a circulating heat dissipation channel 5. The display screen 12 is disposed in the first guide channel 51. Since the closed inner cavity 11 is provided with a connected first guide channel 51 and a second guide channel 52 to form a circulating heat dissipation channel, and the display screen 12 is disposed in the first guide channel 51, when the internal circulation guide fan 3 is started, the air flow speed in the circulating heat dissipation channel 5 is increased, and thus the heat of the display screen 12 is guided into the internal heat dissipation part 21 for rapid heat dissipation.

[0026] Further, to make the structure of the display optical engine 1 more compact and smaller in size, the display optical engine 1 includes a fixed housing 13, the closed inner cavity 11 is arranged inside the fixed housing 13, the display optical engine 1 further includes a rear Fresnel element 14 and a front Fresnel element 15 which are arranged at intervals inside the closed inner cavity 11, the display screen 12 is arranged between the rear Fresnel element 14 and the front Fresnel element 15, a first flow guiding channel 51 is formed between the rear Fresnel element 14 and the front Fresnel element 15, and a second flow guiding channel 52 is formed between the front Fresnel element 15 and the side wall of the fixed housing 13. By forming the first flow guiding channel 51 with the front Fresnel element 15 and the rear Fresnel element 14, and forming the second flow guiding channel between the front Fresnel element 15 and the side wall of the fixed housing 13, without affecting the projection effect and projection function, and ensuring a good heat dissipation effect, adopting this structure will make the display optical engine 1 more compact, save the heat dissipation space, and thus free up more usable space to arrange other electronic components, etc., maximizing the utilization of space.

[0027] Further, to enable the internal circulation guide fan 3 to smoothly guide the air in the circulation heat dissipation channel 5, the internal circulation guide fan 3 is arranged on the upper side of the internal heat dissipation part 21, and a first corner flow guiding part 53 for separating the first flow guiding channel 51 and the second flow guiding channel 52 and for guiding the air flow to the first flow guiding channel 51 is arranged at the air outlet 31 of the internal circulation guide fan 3. By arranging the first corner flow guiding part 53, the internal circulation guide fan 3 can be well connected to the first flow guiding channel 51 to form a smooth circulation heat dissipation channel 5.

[0028] As a specific implementation manner rather than a limitation, to make the closed inner cavity 11 form a closed environment so that dust and the like are not easily introduced into the interior of the display optical engine 1 during heat dissipation, the internal heat dissipation part 21 plugs the bottom 131 of the fixed housing 13, and a heat dissipation fixing part 23 for fixedly connecting with the fixed housing 13 is arranged on the display screen radiator 2 and located between the internal heat dissipation part 21 and the external heat dissipation part 22. Preferably, the heat dissipation fixing part 23 is a slightly protruding plate, the internal heat dissipation part 21 and the external heat dissipation part 22 are respectively fixed on the upper and lower surfaces of the heat dissipation fixing part 23, and the heat dissipation fixing part 23 is fixed on the fixed housing 13 to form a sealed space, so that dust and the like are not easily introduced into the interior of the display optical engine during heat dissipation.

[0029] Furthermore, in order to dissipate heat from the light source component and make the structure more compact, a light source component 9 is further included. The light source component 9 is arranged on the side wall of the fixed housing 13. A light source radiator 10 attached to the light source component 9 and a light source cooling blower 6 for blowing air to cool the light source radiator 10 are provided outside the fixed housing 13. The light source cooling blower 6 is vertically arranged relative to the light source radiator 10. A second corner flow guide member 7 for communicating the light source cooling blower 6 and the light source radiator 10 is provided between the light source cooling blower 6 and the light source radiator 10. The heat emitted by the light source component 9 is absorbed by the light source radiator 10, and then the air flow speed around the light source radiator 10 is changed by the light source cooling blower 6, thereby achieving rapid heat dissipation. And the second corner flow guide member 7 can better concentrate the air blown by the light source cooling blower 6 towards the light source radiator 10. The light source cooling blower 6 is vertically arranged relative to the light source radiator 10, making the display optical engine 1 more compact, minimizing the size of the optical engine to the greatest extent, and leaving more space for the external structure.

[0030] Furthermore, in order to more conveniently install the housing of the projector, at least a first housing mounting opening 132 and a second housing mounting opening 133 are provided on the fixed housing 13. The opening direction of the first housing mounting opening 132 is perpendicular to the opening direction of the second housing mounting opening 133. The housing of the projector can be installed through the first housing mounting opening 132 and the second housing mounting opening 133. The mounting posts on the housing of the projector are fixed by screws in cooperation with the first housing mounting opening 132 and the second housing mounting opening 133, so as to achieve the installation of the housing of the projector. The first housing mounting opening 132 and the second housing mounting opening 133 have different orientations, which can adapt to the housing of the projector installed with the fixed housing 13 from different directions, and have strong adaptability.

[0031] As a specific implementation manner rather than a limitation, in order to refract the light of the display screen 12 into the lens 8, a light bucket 16 and a reflective glass 17 are provided in the closed inner cavity 11. A lens 8 is provided on the side wall of the fixed housing 13. The light bucket 16 is arranged between the light source component 9 and the rear Fresnel element 14. The reflective glass 17 is arranged between the front Fresnel element 15 and the lens 8. The lens 8 and the light source radiator 10 are located on the same side of the fixed housing 13. When the projector works, the light of the display screen 12 will be emitted to the reflective glass 17 after passing through the front Fresnel element 15. The reflective glass 17 presents a certain angle, and the angle is aligned with the lens 8. The projected content will be projected to the outside through the lens, such as onto a screen such as a white cloth. The lens 8 and the light source radiator 10 are located on the same side of the fixed housing 13. Adopting this structural layout will also maximize the utilization of the installation space of the display optical engine 1 and make the structure more compact.

[0032] Further, in order to enable the display screen radiator 2 and the light source radiator 10 to have good heat dissipation performance, the light-emitting source component 9 is an LED lamp, and the display screen radiator 2 and the light source radiator 10 are both heat-dissipating aluminum profiles. Preferably, the heat-dissipating aluminum material is 6030 aluminum profile material, and the display screen radiator 2 and the light source radiator 10 are designed with multiple heat-dissipating fins, which can effectively increase the contact area with air and accelerate the heat dissipation speed.

[0033] The specific implementation mode of the present utility model is as follows:

[0034] As Figure 2 The arrow shown is the diversion direction of the heat in the circulating heat dissipation channel. When dissipating heat from the display screen, start the projector, the internal circulation heat conduction fan starts, and the wind direction flows out from the air outlet, enters the first diversion channel through the first corner diversion part, dissipates heat from the display screen installed in the first diversion channel, and then the heat flows to the second diversion channel through the diversion of the internal circulation heat conduction fan until it is diverted to the internal heat dissipation part, and the heat is absorbed by the internal heat dissipation part and then diffused to the external heat dissipation part. The external heat dissipation part is provided with a display screen heat dissipation blower, and the heat dissipation blower of the display screen is used to accelerate the dissipation of the heat in the external heat dissipation part, thereby achieving the effect of dissipating heat from the display screen.

[0035] When dissipating heat from the light-emitting source component, start the projector, the light source heat dissipation blower starts, and the heat dissipated by the light-emitting source component is conducted to the light source radiator, and the heat dissipation blower of the light source is used to accelerate the dissipation of the heat in the light source radiator, thereby achieving the effect of dissipating heat from the light-emitting source component.

[0036] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. An actively cooled enclosed projector, comprising a display optical engine (1), characterized in that, It further includes a display screen radiator (2). The display screen optical engine (1) includes a closed inner cavity (11), a display screen (12) disposed in the closed inner cavity (11), and an internal circulation guide fan (3) disposed in the closed inner cavity (11). The display screen radiator (2) includes an integrated internal heat dissipation part (21) and an external heat dissipation part (22). The internal heat dissipation part (21) is located inside the closed inner cavity (11), and the external heat dissipation part (22) is located outside the closed inner cavity (11). The internal circulation guide fan (3) is used to reciprocally guide the air flow between the display screen (12) and the internal heat dissipation part (21). Outside the closed inner cavity (11), there is a display screen cooling blower (4) connected to the external heat dissipation part (22) and used to blow air for cooling the external heat dissipation part (22).

2. The active heat dissipation enclosed projector according to claim 1, wherein Inside the closed inner cavity (11), there are a first guide channel (51) and a second guide channel (52) that are connected. The first guide channel (51) is connected to the air outlet (31) of the internal circulation guide fan (3), the second guide channel (52) is connected to the internal heat dissipation part (21), the air inlet (32) of the internal circulation guide fan (3) is connected to the internal heat dissipation part (21). The internal circulation guide fan (3), the first guide channel (51), the second guide channel (52), and the internal heat dissipation part (21) form a circulating heat dissipation channel (5), and the display screen (12) is disposed in the first guide channel (51).

3. The active heat dissipation closed projector according to claim 2, characterized in that, The display screen optical engine (1) includes a fixed shell (13), and the closed inner cavity (11) is disposed inside the fixed shell (13). The display screen optical engine (1) further includes a rear Fresnel element (14) and a front Fresnel element (15) that are spaced apart in the closed inner cavity (11). The display screen (12) is disposed between the rear Fresnel element (14) and the front Fresnel element (15). The first guide channel (51) is formed between the rear Fresnel element (14) and the front Fresnel element (15), and the second guide channel (52) is formed between the front Fresnel element (15) and the side wall of the fixed shell (13).

4. The active heat dissipation enclosed projector according to claim 3, wherein The internal circulation guide fan (3) is disposed above the internal heat dissipation part (21). At the air outlet (31) of the internal circulation guide fan (3), there is a first corner guide element (53) for separating the first guide channel (51) and the second guide channel (52) and for guiding the air flow to the first guide channel (51).

5. The active heat dissipation enclosed projector according to claim 3, wherein, The internal heat dissipation part (21) seals the bottom (131) of the fixed shell (13), and on the display screen radiator (2), there is a heat dissipation fixing part (23) located between the internal heat dissipation part (21) and the external heat dissipation part (22) and used for fixedly connecting with the fixed shell (13).

6. The closed projector with active cooling according to claim 3, wherein It further includes a light source component (9). The light source component (9) is disposed on the side wall of the fixed shell (13). Outside the fixed shell (13), there is a light source radiator (10) attached to the light source component (9) and a light source cooling blower (6) for blowing air to cool the light source radiator (10).

7. The active heat dissipation enclosed projector according to claim 6, wherein, The light source cooling blower (6) is vertically arranged relative to the light source radiator (10), and a second corner flow guide member (7) for communicating the light source cooling blower (6) and the light source radiator (10) is provided between the light source cooling blower (6) and the light source radiator (10).

8. The active heat dissipation closed projector according to any one of claims 3-7, characterized in that, At least a first housing mounting opening (132) and a second housing mounting opening (133) are provided on the fixed housing (13), and the opening direction of the first housing mounting opening (132) is perpendicular to the opening direction of the second housing mounting opening (133).

9. The closed projector with active heat dissipation according to claim 6 or 7, characterized in that, A light bucket (16) and a reflective glass (17) are provided in the closed inner cavity (11), a lens (8) is provided on the side wall of the fixed housing (13), the light bucket (16) is arranged between the light emitting source member (9) and the rear Fresnel member (14), the reflective glass (17) is arranged between the front Fresnel member (15) and the lens (8), and the lens (8) and the light source radiator (10) are on the same side of the fixed housing (13).

10. The closed projector with active heat dissipation according to claim 6 or 7, characterized in that, The light emitting source member (9) is an LED lamp, and both the display screen radiator (2) and the light source radiator (10) are heat dissipation aluminum profiles.

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