Projection ray machine with internal circulation heat dissipation function

Abstract

The utility model relates to the technical field of projection ray machines, in particular to an internal circulation heat dissipation projection ray machine which comprises a shell, a lens is fixedly connected to one end of the shell, an expansion box is fixedly connected to one side of the shell, a fan is clamped in the expansion box, a first air opening used for air inlet is formed in one side of the fan, and a second air opening used for air outlet is formed in the other side of the fan. A first air opening used for air outlet is formed in one side of the fan, a second air opening used for air outlet is formed in the other side of the fan, the first air opening and the second air opening both penetrate through the expansion box, a lens and a display screen are clamped in the shell, a second aluminum radiator is clamped to the side, away from the expansion box, of the side wall of the shell, and a cavity is formed in the position, between the fan and the second aluminum radiator, in the shell; the interior of the projection ray machine is in a closed state, the air path of the fan is not connected with the outside, the fan drives air in the projection ray machine to flow through the first air opening and the second air opening, heat dissipation is conducted through the second aluminum radiator, heat dissipation is conducted in the projection ray machine circularly, the heat dissipation effect is good, and external dust is prevented from entering a display screen area.

Description

Technical Field

[0001] The utility model relates to the field of projection optical machines, and specifically to a projection optical machine with internal circulation heat dissipation. Background Technique

[0002] The projection optical machine projects images or videos onto a screen, and adopts new solid light sources such as LED light sources and laser light sources, with high brightness and good color.

[0003] For example, a projection optical machine proposed in the patent application number "CN202222295102.3" has the advantages of effectively realizing heat dissipation, reducing the internal temperature, and ensuring a clear projection picture through structures such as a heat dissipation light shielding member, a light shielding section, and an over - flow light end.

[0004] However, the heat of the projection optical machine is transferred to the heat dissipation section through the light shielding section and then dissipated into the air. The natural heat dissipation method has poor heat dissipation effect, which is not conducive to the rapid dissipation of the internal heat of the projection optical machine. Therefore, a projection optical machine with internal circulation heat dissipation is proposed. Content of the Utility Model

[0005] The purpose of the utility model is to provide a projection optical machine with internal circulation heat dissipation to solve the problems raised in the above - mentioned background technique.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A projection optical machine with internal circulation heat dissipation includes a housing. One end of the housing is fixedly connected with a lens, and one side of the housing is fixedly connected with an extension box. A fan is clamped in the extension box. An air inlet one for air intake is opened on one side of the fan, and an air outlet two for air outlet is opened on the other side of the fan. Both the air inlet one and the air outlet two penetrate through the extension box. A lens and a display screen are clamped inside the housing. On the side wall of the housing far from the extension box, an aluminum radiator two is clamped, and a cavity is opened inside the housing at a position between the fan and the aluminum radiator two.

[0008] Preferably, a fixed cavity is opened at one end of the side wall of the housing far from the lens. A transfer port for heat conduction is opened on one side of the fixed cavity, and an aluminum radiator one is clamped in the fixed cavity.

[0009] Preferably, a diversion plate is fixedly connected inside the cavity. One end of the diversion plate is fixedly connected with one side of the extension box, and the other end is used for diverting the air inlet one. A flow - dividing plate is fixedly connected inside the housing, which is located between the lens and the display screen and cooperates with the air outlet two.

[0010] Preferably, two groups of clamping plates one are fixedly connected inside the housing. One group of clamping plates one is located at one end of the extension box close to the aluminum radiator two, and the other group of clamping plates one is located at one end of the aluminum radiator two close to the aluminum radiator one. Both ends of the lens are clamped inside the two groups of clamping plates one.

[0011] Preferably, two sets of second clamping plates are fixedly connected inside the housing. One set of second clamping plates is located on one side of the second air outlet, and the other set of second clamping plates is located on one side of the aluminum radiator. Both ends of the display screen are respectively clamped inside the two sets of second clamping plates.

[0012] Preferably, extension plates are fixedly connected to both ends of the second aluminum radiator. Two grooves are formed in the inner wall of the housing, and elastic components are fixedly connected in the two grooves. The two elastic components are respectively in clamping fit with the two extension plates.

[0013] Advantages of the utility model:

[0014] In the utility model, the interior of the projection optical machine is in a sealed state, the air path of the fan is not connected to the outside. The fan drives the air flow in the cavity through the first air outlet, blows it between the lens and the display screen through the second air outlet, and then enters the second aluminum radiator for heat dissipation. The heat-dissipated air flows out of the second aluminum radiator, so that the interior of the projection optical machine circulates for heat dissipation, with good heat dissipation effect and preventing external dust from entering the display screen area. Description of the drawings

[0015] 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, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings;

[0016] Figure 1 is the overall structural schematic diagram of the present utility model;

[0017] Figure 2 is the internal structural schematic diagram of the present utility model;

[0018] Figure 3 is the sectional structural schematic diagram of the present utility model;

[0019] Figure 4 is Figure 3 the enlarged schematic diagram of the structure at A of

[0020] The reference numerals in the drawings are as follows:

[0021] 1. Housing; 3. Lens; 4. Expansion box; 5. First aluminum radiator; 6. Fixed cavity; 7. Transfer port; 8. First clamping plate; 9. Second clamping plate; 10. Flow dividing plate; 11. Lens; 12. Display screen; 13. Fan; 14. First air outlet; 15. Deflector; 16. Second air outlet; 18. Cavity; 19. Second aluminum radiator; 20. Extension plate; 21. Groove; 23. Elastic component. Detailed implementation manners

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] A projection optical machine with internal circulation heat dissipation, as Figures 1-4 shown, includes a housing 1. One end of the housing 1 is fixedly connected with a lens 3. The lens 3 is a short-focus high-definition lens with high definition and uniformity. The total focal length of the lens 3 is 79 - 89 mm. The lens 3 adopts a lower off-axis design to achieve clear imaging in a large range. One side of the housing 1 is fixedly connected with an expansion box 4. A fan 13 is clamped in the expansion box 4. An air inlet 14 for air intake is provided on one side of the fan 13, and an air outlet 16 for air outlet is provided on the other side of the fan 13. Both the air inlet 14 and the air outlet 16 penetrate through the expansion box 4. A lens 11 and a display screen 12 are clamped inside the housing 1. An aluminum radiator II 19 is clamped on the side wall of the housing 1 away from the expansion box 4. A cavity 18 is provided inside the housing 1 at a position between the fan 13 and the aluminum radiator II 19.

[0024] The shape and placement position of the aluminum radiator II 19 are calculated and tested in the laboratory. The size and placement angle of the fan 13 are calculated and tested in the laboratory. The display screen 12 has good heat dissipation effect, protecting the display screen 12 and enabling the display screen 12 to work more effectively and normally.

[0025] As Figure 2 shown, since the inside of the projection optical machine is in a closed state, the expansion box 4 is used to provide a space for installing the fan 13. The air path of the fan 13 is not connected to the outside. The fan 13 drives the air flow in the cavity 18 through the air inlet 14, causing the air in the cavity 18 to enter the fan 13. The fan 13 rotates to drive the air to blow towards between the lens 11 and the display screen 12 through the air outlet 16, taking out the heat between the lens 11 and the display screen 12. The air carrying the heat then enters the aluminum radiator II 19 for heat dissipation. The heat-dissipated air flows out of the aluminum radiator II 19 and enters the cavity 18, realizing internal circulation heat dissipation of the projection optical machine, with good heat dissipation effect and avoiding external dust from entering the area of the display screen 12.

[0026] A fixed cavity 6 is provided at one end of the side wall of the housing 1 away from the lens 3. A transfer port 7 for heat conduction is provided on one side of the fixed cavity 6. An aluminum radiator I 5 is clamped in the fixed cavity 6.

[0027] As Figure 2As shown, the fixed cavity 6 is used to install the first aluminum radiator 5. The first aluminum radiator 5 dissipates heat from the LED lamp board inside the projection optical machine. The shape and placement position of the first aluminum radiator 5 are calculated and tested in the laboratory, and it has a good heat dissipation effect on the LED lamp.

[0028] A flow guide plate 15 is fixedly connected inside the cavity 18. One end of the flow guide plate 15 is fixedly connected to one side of the expansion box 4, and the other end is used to divert the air flow to the first air outlet 14. A flow splitting plate 10 is fixedly connected inside the housing 1. The flow splitting plate 10 is located between the lens 11 and the display screen 12, and the flow splitting plate 10 cooperates with the second air outlet 16.

[0029] As Figures 2-3 shown, the flow guide plate 15 facilitates the entry of air inside the cavity 18 into the first air outlet 14. The flow splitting plate 10 splits the air flow from the second air outlet 16, enabling the air to dissipate heat from one side of the lens 11 and one side of the display screen 12.

[0030] Two sets of first clamping plates 8 are fixedly connected inside the housing 1. One set of first clamping plates 8 is located at one end of the expansion box 4 close to the second aluminum radiator 19, and the other set of first clamping plates 8 is located at one end of the second aluminum radiator 19 close to the first aluminum radiator 5. Both ends of the lens 11 are respectively clamped inside the two sets of first clamping plates 8.

[0031] As Figure 2 shown, the first clamping plates 8 facilitate the installation and fixation of the lens 11, making the lens 11 easy to disassemble and replace.

[0032] Two sets of second clamping plates 9 are fixedly connected inside the housing 1. One set of second clamping plates 9 is located on one side of the second air outlet 16, and the other set of second clamping plates 9 is located on the side of the first aluminum radiator 5. Both ends of the display screen 12 are respectively clamped inside the two sets of second clamping plates 9.

[0033] As Figure 2 shown, the second clamping plates 9 facilitate the installation and fixation of the display screen 12, making the display screen 12 easy to disassemble and replace or repair.

[0034] Both ends of the second aluminum radiator 19 are fixedly connected with extension plates 20. Two sets of grooves 21 are opened on the inner wall of the housing 1. Elastic components 23 are fixedly connected inside the two sets of grooves 21, and the two sets of elastic components 23 are respectively in clamping cooperation with the two sets of extension plates 20.

[0035] As Figures 2-4 shown, the second aluminum radiator 19 is installed on the housing through the extension plates 20. The elastic components 23 are in clamping connection with the extension plates 20, preventing the extension plates 20 from being misaligned during the installation process, and making the second aluminum radiator 19 easy to disassemble and assemble.

[0036] The working principle of a projection optical machine with internal circulation heat dissipation provided by the present utility model is as follows:

[0037] Since the interior of this projection optical machine is in a sealed state, the air path of the fan 13 is not connected to the outside. The fan 13 drives the air flow in the cavity 18 through the first air outlet 14, blows towards the space between the lens 11 and the display screen 12 through the second air outlet 16, and then enters the second aluminum radiator 19 for heat dissipation and flows out of the second aluminum radiator 19, enabling the internal circulation heat dissipation of the projection optical machine, with good heat dissipation effect and preventing external dust from entering the area of the display screen 12.

[0038] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed.

Claims

1. A projection optical machine with internal circulation heat dissipation, comprising a housing (1), characterized in that, One end of the housing (1) is fixedly connected to a lens (3), and one side of the housing (1) is fixedly connected to an expansion box (4). A fan (13) is snap-fitted in the expansion box (4). An air inlet one (14) for air intake is provided on one side of the fan (13), and an air outlet two (16) for air outlet is provided on the other side of the fan (13). Both the air inlet one (14) and the air outlet two (16) penetrate through the expansion box (4). A lens (11) and a display screen (12) are snap-fitted inside the housing (1). An aluminum radiator two (19) is snap-fitted on the side wall of the housing (1) away from the expansion box (4). A cavity (18) is provided inside the housing (1) at a position between the fan (13) and the aluminum radiator two (19).

2. The projection optical machine with internal circulation heat dissipation according to claim 1, characterized in that, A fixing cavity (6) is provided at one end of the side wall of the housing (1) away from the lens (3). A transfer port (7) for heat conduction is provided on one side of the fixing cavity (6). An aluminum radiator one (5) is snap-fitted in the fixing cavity (6).

3. The projection optical machine with internal circulation heat dissipation according to claim 1, characterized in that, A flow guide plate (15) is fixedly connected inside the cavity (18). One end of the flow guide plate (15) is fixedly connected to one side of the expansion box (4), and the other end is used for guiding the air inlet one (14). A flow dividing plate (10) is fixedly connected inside the housing (1). The flow dividing plate (10) is located between the lens (11) and the display screen (12), and the flow dividing plate (10) cooperates with the air outlet two (16).

4. The projection optical machine with internal circulation heat dissipation according to claim 2, characterized in that, Two groups of clamping plates one (8) are fixedly connected inside the housing (1). One group of clamping plates one (8) is located at one end of the expansion box (4) close to the aluminum radiator two (19), and the other group of clamping plates one (8) is located at one end of the aluminum radiator two (19) close to the aluminum radiator one (5). Both ends of the lens (11) are snap-fitted inside the two groups of clamping plates one (8).

5. The projection optical machine with internal circulation heat dissipation according to claim 4, characterized in that, Two groups of clamping plates two (9) are fixedly connected inside the housing (1). One group of clamping plates two (9) is located on one side of the air outlet two (16), and the other group of clamping plates two (9) is located on the side of the aluminum radiator one (5). Both ends of the display screen (12) are snap-fitted inside the two groups of clamping plates two (9).

6. The projection optical machine with internal circulation heat dissipation according to claim 1, wherein, Both ends of the aluminum radiator two (19) are fixedly connected with extension plates (20). Two groups of grooves (21) are provided on the inner wall of the housing (1). Elastic components (23) are fixedly connected inside the two groups of grooves (21), and the two groups of elastic components (23) are respectively snap-fitted with the two groups of extension plates (20).

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