Heat dissipation structure of projector

Abstract

The utility model provides a heat dissipation structure of a projector, which comprises a shell and a partition plate arranged in the shell, the space in the shell comprises a first space located on one side of the partition plate and a second space located on the other side of the partition plate, and a first fan, a second fan, a first Fresnel lens and a second Fresnel lens are arranged in the first space. The display screen is located between the first Fresnel lens and the second Fresnel lens, a first air channel is formed between the first Fresnel lens and the display screen, the first fan drives air in the first air channel to flow, a second air channel is formed between the second Fresnel lens and the display screen, and the second fan drives air in the second air channel to flow. The partition plate is provided with a first air opening communicating with the first air channel and the second space and a second air opening communicating with the second air channel and the second space, a third fan is arranged in the second space, and the first space and the second space communicate with the outer space of the shell. According to the scheme, the heat dissipation effect of the display screen is better, and heat at the position can be quickly discharged out of the shell under the action of the third fan.

Description

Technical Field

[0001] The present application relates to the technical field of projectors, and in particular to a heat dissipation structure of a projector. Background Art

[0002] The display screen is a very important component in a projector. When the temperature inside the projector is too high, the display screen is prone to reduced lumen and black screen. Some existing projectors only have cooling fans designed at the air outlet. The heat dissipation effect inside the projector, especially the heat dissipation effect in the area related to the display screen, is poor, which affects the projection effect of the projector and even affects the service life of the projector.

[0003] Therefore, it is necessary to provide a heat dissipation structure of the projector to dissipate the heat of the internal display screen in a targeted manner to avoid excessive temperature at the display screen. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a heat dissipation structure of a projector, which specifically dissipates the heat of the internal display screen to avoid excessive temperature at the display screen.

[0005] According to the implementation scheme of the utility model, the first scheme is provided: a heat dissipation structure of a projector, comprising a shell and a partition arranged inside the shell, the space inside the shell comprising a first space located on one side of the partition, and a second space located on the other side of the partition, a first fan, a second fan, a first mirror, a second mirror, and a display screen located between the first mirror and the second mirror are provided in the first space, a first air duct is formed between the first mirror and the display screen, the first fan drives the air flow in the first air duct, a second air duct is formed between the second mirror and the display screen, the second fan drives the air flow in the second air duct, the partition is provided with a first air outlet connecting the first air duct and the second space, and a second air outlet connecting the second air duct and the second space, a third fan is provided in the second space, and the first space and the second space are both connected to the external space of the shell.

[0006] In a preferred embodiment, the shell is provided with a third air outlet on one side, and a fourth air outlet on the other opposite side. The third air outlet is communicated with the first space, and the fourth air outlet is communicated with the second space.

[0007] In a preferred solution, a lamp bead and a heat sink are further provided in the shell, the lamp bead is located in the first space and on the side of the first mirror away from the second mirror, and the lamp bead is connected to the heat sink.

[0008] In a preferred solution, the heat sink includes a heat conducting portion connected to the lamp bead, and a heat dissipating portion located in the second space, and the heat dissipating portion is located between the third fan and the fourth air outlet.

[0009] In a preferred solution, the heat sink is located on a side of the lamp bead away from the first mirror.

[0010] In a preferred embodiment, the first space includes a first area located on a side of the first mirror away from the second mirror, and the first fan is located in the first area; the first space also includes a second area located on a side of the second mirror away from the first mirror, and the second fan is located in the second area.

[0011] In a preferred embodiment, a reflector is provided in the first area, the reflective side of the reflector is an optical area, the backlight side of the reflector is an airflow area, the first fan is located in the airflow area, and the optical area and the airflow area are kept sealed.

[0012] In a preferred embodiment, the third air outlet is connected to the second space, and the partition is further provided with a fifth air outlet connecting the air flow area and the second space.

[0013] In a preferred solution, the second fan faces toward or away from the space between the lamp bead and the second mirror.

[0014] In a preferred solution, the partition is further provided with a sixth air outlet connecting the second area and the second space.

[0015] The utility model has the following beneficial effects:

[0016] The first space is provided with a display screen, a first fan and a second fan, and a first air duct and a second air duct are respectively formed on opposite sides of the display screen. Driven by the first fan and the second fan, the air flow in the first air duct and the second air duct is accelerated, so that the heat dissipation effect at the display screen is better, and the partition is also provided with a first air outlet and a second air outlet. The first air outlet connects the first air duct and the second space, and the second air duct outlet connects the second air duct and the second space. Driven by the third fan in the second space, the air can flow quickly between the first space and the second space, so that the heat can be quickly discharged from the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of a heat dissipation structure of a projector according to an embodiment of the utility model;

[0018] Figure 2 A schematic diagram of a heat dissipation structure of a projector according to an embodiment of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the heat dissipation structure of the projector according to an embodiment of the utility model after the light passage is hidden;

[0020] Figure 4 A schematic diagram of a heat dissipation structure of a projector according to an embodiment of the utility model;

[0021] Figure 5 It is a structural schematic diagram of a partition and a part of a shell according to an embodiment of the utility model.

[0022] Reference numerals: 10, housing; 11, first space; 111, first area; 1111, optical area; 1112, air flow area; 112, second area; 12, second space; 13, third air outlet; 14, fourth air outlet; 20, partition; 21, first air outlet; 22, second air outlet; 23, fifth air outlet; 24, sixth air outlet; 31, first fan; 32, second fan; 33, first mirror; 34, second mirror; 35, display screen; 36, first air duct; 37, second air duct; 38, lamp beads; 39, radiator; 391, heat conduction unit; 392, heat dissipation unit; 40, reflector; 50, third fan; DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of this application.

[0024] It should be noted that when an element is referred to as being "fixed on" or "set on" another component, it can be directly on the other component or indirectly set on the other component; when a component is referred to as being "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component.

[0025] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "

[0026] The orientations or positional relationships indicated by "horizontal", "vertical", "top", "bottom", "inside", "outside", etc. are based on the orientations or positional relationships shown in the drawings and are only for the convenience of describing the present application and simplifying the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limitations on the present application.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0028] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them. They are not used to limit the conditions under which this application can be implemented, so they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0029] Please refer to Figure 1 to Figure 5 An embodiment of the utility model provides a heat dissipation structure of a projector, including a housing 10, a partition 20, a first fan 31, a second fan 32, a first mirror 33, a second mirror 34, a display screen 35 and a third fan 50. Among them, the partition 20 is arranged inside the shell 10, and the space inside the shell 10 includes a first space 11 and a second space 12. The first space 11 is located on one side of the partition 20, and the second space 12 is located on the other side of the partition 20. The first fan 31, the second fan 32, the first mirror 33, the second mirror 34 and the display screen 35 are all arranged in the first space 11 and fixed to the partition 20. The display screen 35 is located between the first mirror 33 and the second mirror 34. A first air duct 36 is formed between the first mirror 33 and the display screen 35. The first fan 31 drives the air flow in the first air duct 36. A second air duct 37 is formed between the second mirror 34 and the display screen 35. The second fan 32 drives the air flow in the second air duct 37. The partition 20 is provided with a first air outlet 21 connecting the first air duct 36 and the second space 12, and a second air outlet 22 connecting the second air duct 37 and the second space 12. A third fan 50 is provided in the second space 12. The first space 11 and the second space 12 are both connected to the external space of the shell 10.

[0030] In this embodiment, driven by the first fan 31 and the second fan 32, the air flow in the first air duct 36 and the second air duct 37 is accelerated, so that the heat dissipation effect at the display screen 35 is better, and the partition 20 is also provided with a first air outlet 21 and a second air outlet 22. The first air outlet 21 connects the first air duct 36 with the second space 12, and the second air duct 37 connects the second air duct 37 with the second space 12. Driven by the third fan 50 in the second space 12, the air can flow quickly between the first space 11 and the second space 12, so that the heat can be quickly discharged from the shell 10.

[0031] In a preferred embodiment, the first fan 31 blows air into the first air duct 36, and the second fan 32 blows air into the second air duct 37. Under the attraction of the third fan 50, the air in the first air duct 36 enters the second space 12 through the first air outlet 21, and the air in the second air duct 37 enters the second space 12 through the second air outlet 22. After entering the second space 12, the air can be quickly discharged from the shell 10 under the action of the third fan 50.

[0032] In one embodiment, different from the previous embodiment, the first fan 31 may suck the air in the first air duct 36, the second fan 32 may suck the air in the second air duct 37, and the third fan 50 may guide the air outside the shell 10 to the second space 12, and continue to guide it to the first air duct 36 and the second air duct 37.

[0033] In a preferred embodiment, the housing 10 is provided with a third air outlet 13 on one side, and a fourth air outlet 14 on the other opposite side, the third air outlet 13 is connected to the first space 11, and the fourth air outlet 14 is connected to the second space 12. The third air outlet 13 and the fourth air outlet 14 can allow air to circulate inside and outside the housing 10. Preferably, the third air outlet 13 is suitable for air intake, and the fourth air outlet 14 is suitable for air discharge.

[0034] In a preferred embodiment, reference may be made to Figure 2 to Figure 4 The housing 10 is also provided with a lamp bead 38 and a radiator 39. The lamp bead 38 is located in the first space 11, and the lamp bead 38 is located on the side of the first mirror 33 away from the second mirror 34, and the lamp bead 38 is connected to the radiator 39, and the radiator 39 is used to help the lamp bead 38 dissipate heat.

[0035] Specifically, the heat sink 39 is located on the side of the lamp bead 38 away from the first mirror 33, and the heat sink 39 includes a heat conducting portion 391 and a heat dissipating portion 392. The heat conducting portion 391 is connected to the lamp bead 38 and can conduct heat to the heat dissipating portion 392. The heat dissipating portion 392 is located in the second space 12, and the heat dissipating portion 392 is located between the third fan 50 and the fourth air outlet 14. Under the action of the third fan 50, the heat dissipating portion 392 can dissipate heat outside the fourth air outlet 14. Preferably, the heat dissipating portion 392 includes a plurality of heat sinks to cooperate with the third fan 50 to form convection heat dissipation.

[0036] In a preferred embodiment, reference may be made to Figure 3 The first space 11 includes a first area 111 located on the side of the first mirror 33 away from the second mirror 34, and the first fan 31 is located in the first area 111; the first space 11 also includes a second area 112 located on the side of the second mirror 34 away from the first mirror 33, and the second fan 32 is located in the second area 112.

[0037] In a preferred embodiment, reference may be made to Figure 2 A reflector 40 is provided in the first area 111. The reflective side of the reflector 40 is an optical area 1111 for light path transmission. The backlight side of the reflector 40 is an airflow area 1112 for airflow circulation. The first fan 31 is located in the airflow area 1112. The optical area 1111 and the airflow area 1112 are kept sealed so that air will not enter the optical area 1111 from the airflow area 1112, thereby achieving a dustproof effect.

[0038] In a preferred embodiment, the third air port 13 is connected to the second space 12, and the partition 20 is further provided with a fifth air port 23, which connects the airflow area 1112 with the second space 12, so that air can enter the second space 12 through the third air port 13, and enter the first space 11 through the fifth air port 23. Among them, the third air port 13 is arranged at the bottom of the side wall of the housing 10, and the third air port 13 is not directly connected to the first space 11, but is connected to the second space 12, and is indirectly connected to the first space 11 through the fifth air port 23, which can reduce the dust accumulation of the first fan 31, and also make other electronic components in the second space 12 have a better heat dissipation effect.

[0039] In a preferred embodiment, reference may be made to Figure 2 and Figure 3 The second fan 32 is directed toward or away from the space between the lamp bead 38 and the second mirror 34, and can directly drive the air flow between the lamp bead 38 and the second mirror 34 to achieve a better heat dissipation effect.

[0040] In a preferred embodiment, the partition 20 is further provided with a sixth air vent 24 connecting the second area 112 and the second space 12. The sixth air vent 24 further strengthens the air flow between the lamp beads 38 and the second mirror 34. Under the action of the third fan 50 in the second space 12, the heat dissipation effect is better. Figure 3 It can be seen that after the light channel in the model is hidden, the partition 20 below and the sixth air outlet 24 on the partition 20 are exposed, and the third fan 50 at the bottom can be seen from the sixth air outlet 24.

[0041] Hereby, the first space 11 is provided with a display screen 35, a first fan 31 and a second fan 32, and a first air duct 36 and a second air duct 37 are respectively formed on opposite sides of the display screen 35. Driven by the first fan 31 and the second fan 32, the air flow in the first air duct 36 and the second air duct 37 is accelerated, so that the heat dissipation effect at the display screen 35 is better, and the partition 20 is also provided with a first air outlet 21 and a second air outlet 22. The first air outlet 21 connects the first air duct 36 and the second space 12, and the second air duct 37 connects the second air duct 37 and the second space 12. Driven by the third fan 50 in the second space 12, the air can flow quickly between the first space 11 and the second space 12, so that the heat can be quickly discharged from the shell 10.

[0042] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A heat dissipation structure of a projector, It is characterized in that The invention comprises a shell and a partition arranged inside the shell, the space inside the shell comprises a first space located on one side of the partition and a second space located on the other side of the partition, a first fan, a second fan, a first mirror, a second mirror and a display screen located between the first mirror and the second mirror are arranged in the first space, a first air duct is formed between the first mirror and the display screen, the first fan drives the air flow in the first air duct, a second air duct is formed between the second mirror and the display screen, the second fan drives the air flow in the second air duct, the partition is provided with a first air outlet connecting the first air duct and the second space, and a second air outlet connecting the second air duct and the second space, a third fan is arranged in the second space, and the first space and the second space are both connected to the external space of the shell.

2. The heat dissipation structure of the projector according to claim 1, It is characterized in that The shell is provided with a third air outlet on one side, and a fourth air outlet on the other opposite side. The third air outlet is communicated with the first space, and the fourth air outlet is communicated with the second space.

3. The heat dissipation structure of the projector according to claim 2, It is characterized in that The shell is also provided with a lamp bead and a radiator. The lamp bead is located in the first space and on the side of the first mirror away from the second mirror, and the lamp bead is connected to the radiator.

4. The heat dissipation structure of the projector according to claim 3, It is characterized in that The heat sink includes a heat conducting portion connected to the lamp bead and a heat dissipating portion located in the second space, and the heat dissipating portion is located between the third fan and the fourth air outlet.

5. The heat dissipation structure of the projector according to claim 3, It is characterized in that The heat sink is located on a side of the lamp bead away from the first mirror.

6. The heat dissipation structure of the projector according to claim 3, It is characterized in that The first space includes a first area located on a side of the first mirror away from the second mirror, and the first fan is located in the first area; the first space also includes a second area located on a side of the second mirror away from the first mirror, and the second fan is located in the second area.

7. The heat dissipation structure of the projector according to claim 6, It is characterized in that The first area is provided with a reflector, the reflective side of the reflector is an optical area, the backlight side of the reflector is an airflow area, the first fan is located in the airflow area, and the optical area and the airflow area are kept sealed.

8. The heat dissipation structure of the projector according to claim 7, It is characterized in that The third air outlet is connected to the second space, and the partition is further provided with a fifth air outlet connecting the air flow area and the second space.

9. The heat dissipation structure of the projector according to claim 6, It is characterized in that The second fan faces toward or faces away from the space between the lamp bead and the second mirror.

10. The heat dissipation structure of the projector according to claim 9, It is characterized in that The partition is further provided with a sixth air outlet connecting the second area and the second space.

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