Totally enclosed LCD projector heat radiation structure

Abstract

The utility model relates to a totally enclosed LCD projector heat radiation structure comprising a projector main body, the projector main body is provided with a heat radiation unit, the projector main body is provided with a fan corresponding to the heat radiation unit, the air outlet end of the fan forms an air channel, and the heat radiation unit is located in the air channel; the projector main body comprises a rack, a light machine main body, an LCD display screen, a reflection cup and a light source which are connected in sequence, the fan corresponds to the light machine main body, the LCD display screen and the reflection cup are arranged on the rack, and part of the light machine main body, the LCD display screen and the reflection cup are all located in the air duct. The heat dissipation unit is arranged corresponding to the light machine body, the part of the reflection cup located in the air channel, the LCD display screen and the light source. According to the totally-enclosed heat dissipation structure of the LCD projector, the heat dissipation problem of each heating part of the projector can be solved through a single fan, and a plurality of fans are not needed for heat dissipation, so that a structural frame is simple, the space utilization rate is maximized, an effective air duct is formed, and the totally-enclosed heat dissipation structure of the LCD projector has better market competitiveness.

Description

Technical Field

[0001] This utility model relates to the field of projectors, specifically a fully enclosed heat dissipation structure for an LCD projector. Background Technology

[0002] An LCD projector is a projection device based on liquid crystal display technology. It uses an LCD panel as the core display device and projects images onto a screen or wall through a light source and optical system. It is a common type of projector on the market and is widely used in education, business, home entertainment and other fields. LCD projectors are divided into two types according to their optical path: fully open and fully closed.

[0003] Existing fully enclosed LCD projectors mainly use multiple cooling fans to dissipate heat from each heat-generating component of the LCD separately. Setting up multiple fans not only increases the size of the projector, but also increases the noise and cost of the projector, seriously affecting the performance of the projector.

[0004] Therefore, a fully enclosed LCD projector heat dissipation structure is proposed to solve the problems of large size, high noise and high cost caused by excessive projector fans. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a fully enclosed heat dissipation structure for LCD projectors, solving the problems of large size, high noise, and high cost caused by excessive projector fans.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a fully enclosed LCD projector heat dissipation structure, including a projector body, a heat dissipation unit provided on the projector body, a fan provided on the projector body corresponding to the heat dissipation unit, an air duct formed at the air outlet of the fan, and the heat dissipation unit located within the air duct;

[0007] The projector body includes a frame, an optical engine body, an LCD screen, a reflector, and a light source connected in sequence. The fan is mounted on the frame corresponding to the optical engine body, the LCD screen, and the reflector. Parts of the optical engine body, the LCD screen, and the reflector are located within the air duct, and the heat dissipation unit is located corresponding to the optical engine body, the reflector located in part of the air duct, the LCD screen, and the light source.

[0008] Preferably, the projector body further includes an LCD power driver board and an LCD main control board, both of which are fixed on the frame. The LCD power driver board and the LCD main control board are symmetrically distributed on the upper and lower sides of the reflector cup, and both are located inside the air duct.

[0009] Preferably, the heat dissipation unit includes an LCD screen heat sink, a reflector heat sink, and a light source heat sink. The LCD screen heat sink is located inside the air duct and connected to the LCD screen, and the two are an integral structure. The reflector heat sink is fixed on the reflector cup. The light source heat sink is connected to the light source and fixed at the position of the frame corresponding to the reflector cup, and the light source heat sink is located inside the air duct. The light source heat sink includes a copper pipe, a mounting plate, a first fin group, and a second fin group. The copper pipe is connected to the frame through the mounting plate. The copper pipe passes through the mounting plate, the first fin group, and the second fin group in sequence, and is fixed inside the mounting plate, the first fin group, and the second fin group.

[0010] Preferably, the light source is fixed to the mounting plate by thermally conductive silicone grease, and the light source is located inside the reflector.

[0011] Preferably, the air duct includes a first channel and a second channel that are connected to each other. The LCD main control board, reflector cup, and LCD power driver board are distributed from top to bottom and are arranged in sequence with the first fin group along the air outlet direction of the first channel. The LCD screen heat sink, LCD display screen, optical engine body part and the second fin group are arranged in sequence along the air outlet direction of the second channel and are located in the second channel.

[0012] Preferably, the number of the reflector heat sink is two, and the two reflector heat sinks are fixed symmetrically on the reflector cup. Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0013] This fully enclosed LCD projector cooling structure solves the heat dissipation problem of all heat-generating components with a single fan, eliminating the need for multiple fans. This simplifies the structural framework while maximizing space utilization and creating an effective airflow channel. The cooling unit and all heat-generating components are located within this channel. As the fan circulates air, it effectively removes the heat generated by the components during operation, maintaining the overall projector operating temperature at a suitable level. This results in a smaller, quieter projector, reduced costs, and extended lifespan, making it more competitive in the market. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the right-side structure of this utility model;

[0016] Figure 3 This is a schematic diagram showing the disassembled structure of the frame and the LCD main control board in this utility model.

[0017] The attached figures are labeled as follows: 1. Projector body; 11. Frame; 12. Optical engine body; 13. LCD power driver board; 14. LCD main control board; 15. Reflector cup; 16. LCD display screen; 17. Light source; 2. Heat dissipation unit; 21. LCD screen heat sink; 22. Reflector cup heat sink; 23. Light source heat sink; 231. First fin group; 232. Second fin group; 233. Copper pipe; 234. Mounting plate; 3. Fan; 4. Air duct; 41. First channel; 42. Second channel. Detailed Implementation

[0018] 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.

[0019] Example 1:

[0020] Please see Figure 1-3 The fully enclosed LCD projector heat dissipation structure in this embodiment includes a projector body 1, a heat dissipation unit 2 is provided on the projector body 1, a fan 3 is provided on the projector body 1 corresponding to the heat dissipation unit 2, an air duct 4 is formed at the air outlet of the fan 3, and the heat dissipation unit 2 is located in the air duct 4.

[0021] The projector body 1 includes a frame 11, an optical engine body 12, an LCD screen 16, a reflector 15, and a light source 17 connected in sequence. The fan 3 is mounted on the frame 11 corresponding to the optical engine body 12, the LCD screen 16, and the reflector 15. Parts of the optical engine body 12, the LCD screen 16, and the reflector 15 are located within the air duct 4. The heat dissipation unit 2 is also located corresponding to the optical engine body 12, the part of the reflector 15 located in the air duct 4, the LCD screen 16, and the light source 17.

[0022] Specifically, the projector body 1, heat dissipation unit 2, and fan 3 are all located inside the projector casing.

[0023] When the projector body 1 is started, the fan 3 runs synchronously. After the projector body 1 starts working, the optical engine body 12, reflector 15, LCD screen 16, light source 17 and other components dissipate heat. At this time, the fan 3 blows air into the air duct 4. When the air circulates in the air duct 4, it can carry away the heat dissipated by the optical engine body 12, reflector 15, LCD screen 16, light source 17 and other components located in the air duct 4, thereby cooling down each component. Moreover, the airflow can further improve the heat dissipation effect after passing through the heat dissipation unit 2. Thus, a single fan 3 can cool down multiple components. By dissipating heat from each heat-generating component in the above way, it is not necessary to dissipate heat from each heat-generating component individually. It is only necessary to dissipate heat from each heat-generating component located in the air duct 4 covered by the fan 3 and the heat dissipation unit 2. Using a single fan 3 for heat dissipation not only effectively saves operating costs, but also reduces the size of the projector, reduces the noise of the projector, and improves the market competitiveness of the projector.

[0024] Furthermore, the projector body 1 also includes an LCD power driver board 13 and an LCD main control board 14. The LCD power driver board 13 and the LCD main control board 14 are both fixed on the frame 11. The LCD power driver board 13 and the LCD main control board 14 are symmetrically distributed on the upper and lower sides of the reflector cup 15, and both the LCD power driver board 13 and the LCD main control board 14 are located in the air duct 4. Preferably, the reflector cup 15 is a nickel-plated reflector cup 15.

[0025] Specifically, when the projector is working, the LCD power driver board 13 and the LCD main control board 14 generate heat. When the fan 3 is working, the air flowing through the LCD power driver board 13 and the LCD main control board 14 can dissipate heat and cool down the LCD power driver board 13 and the LCD main control board 14. At the same time, it can also achieve synchronous cooling and heat dissipation of the optical engine body 12 and the reflector cup 15.

[0026] Understandably, the arrangement of the optical engine body 12, LCD power driver board 13, LCD main control board 14, and reflector cup 15 makes the structure more compact. This allows air to circulate within the air duct 4, covering the optical engine body 12, LCD power driver board 13, LCD main control board 14, and reflector cup 15. Consequently, the fan 3 can simultaneously dissipate heat from the optical engine body 12, LCD power driver board 13, LCD main control board 14, and reflector cup 15 without the need for additional air outlet structures. This reduces the projector's cost and size, making it more competitive in the market.

[0027] Furthermore, the heat dissipation unit 2 includes an LCD screen heat sink 21, a reflector heat sink 22, and a light source heat sink 23. The LCD screen heat sink 21 is located inside the air duct 4 and is connected to the LCD display screen 16, and the two are integrated. The reflector heat sink 22 is fixed on the reflector cup 15. The light source heat sink 23 is connected to the light source 17 and fixed at the position of the frame 11 corresponding to the reflector cup 15. The light source heat sink 23 is located inside the air duct 4. The light source heat sink 23 includes a copper pipe 233, a mounting plate 234, a first fin group 231, and a second fin group 232. The copper pipe 233 is connected to the frame 11 through the mounting plate 234. The copper pipe 233 passes through the mounting plate 234, the first fin group 231, and the second fin group 232 in sequence and is fixed inside the mounting plate 234, the first fin group 231, and the second fin group 232.

[0028] It should be noted that the LCD screen heat sink 21, the light cup heat sink 22, and the light source heat sink 23 are respectively installed on the LCD display screen 16 and at the locations of the reflector cup 15 and the frame 11 within the air duct 4. The LCD screen heat sink 21, the light cup heat sink 22, and the light source heat sink 23 can absorb the heat emitted by the LCD display screen 16, the reflector cup 15, and the light source 17. When the fan 3 blows air into the air duct 4, the circulating air passes through the LCD screen heat sink 21, the light cup heat sink 22, and the light source heat sink 23 in sequence, and carries away the heat from the LCD screen heat sink 21, the light cup heat sink 22, and the light source heat sink 23, thereby further cooling down the optical engine body 12, the LCD display screen 16, the reflector cup 15, and the light source 17, and improving the cooling effect.

[0029] Specifically, the circulating air can dissipate heat from the LCD screen 16 when passing through the LCD screen heat sink 21; when passing through the reflector 15, the circulating air will also pass through the light cup heat sink 22. When the circulating air dissipates heat from the reflector 15, the heat sink 22 further increases the heat dissipation area and improves the heat dissipation effect; when the circulating air passes through the frame 11 and the optical engine body 12, it will dissipate heat from both of them. In addition, the light source heat sink 23 is connected to the light source 17. The increased area of ​​the light source heat sink 23 further improves the heat dissipation rate of the light source 17.

[0030] Furthermore, the light source 17 is fixed to the mounting plate 234 by thermally conductive silicone grease, and the light source 17 is located inside the reflector cup 15.

[0031] It is known that after the light source 17 generates heat during operation, it will transfer the generated heat to the mounting plate 234, and then sequentially to the copper tube 233, the first fin group 231 and the second fin group 232. With the cooperation of the first fin group 231 and the second fin group 232, the transferred heat will be carried away by the flowing air, thereby achieving heat dissipation and cooling of the light source 17.

[0032] Furthermore, the air duct 4 includes a first channel 41 and a second channel 42 that are connected. The LCD main control board 14, the reflector cup 15, and the LCD power driver board 13 are arranged from top to bottom and are arranged along the air outlet direction of the first channel 41 with the first fin group 231. The LCD screen heat sink 21, the LCD display screen 16, a part of the optical engine body 12 and the second fin group 232 are arranged along the air outlet direction of the second channel 42 and are located in the second channel 42.

[0033] It should be noted that when fan 3 blows air into air duct 4, the air will circulate in the first channel 41 and the second channel 42. When the air circulates in the first channel 41, the air will pass through the reflector cup 15 and the first fin group 231 in sequence, dissipating heat from the reflector cup 15 and the first fin group 231. When the air passes through the reflector cup 15, it will also come into contact with the light cup heat sink 22, the LCD power driver board 13, and the LCD main control board 14, thereby carrying away the heat generated by the light cup heat sink 22, the LCD power driver board 13, and the LCD main control board 14. When the air circulates in the second channel 42, the air will pass through the LCD screen heat sink 21, the LCD display screen 16, part of the optical engine body 12, and the second fin group 232 in sequence, carrying away heat and cooling the LCD screen heat sink 21, the LCD display screen 16, part of the optical engine body 12, and the second fin group 232.

[0034] It is understandable that by grouping the frame 11, the optical engine body 12, the reflector 15, the LCD power driver board 13, the LCD main control board 14, the LCD screen heat sink 21, the reflector heat sink 22, and the light source heat sink 23 into the first channel 41 and the second channel 42 in the air duct 4, and connecting the upper spaces of the first channel 41 and the second channel 42, the air can circulate more smoothly in the air duct 4, avoiding dead corners, so that the circulating air can carry away heat to the maximum extent.

[0035] Furthermore, there are two light cup heat sinks 22, and the two light cup heat sinks 22 are fixed on the reflector cup 15 in a symmetrical manner.

[0036] It is understandable that the heat sink 22, LCD screen heat sink 21, and light source heat sink 23 are all made of heat dissipation material. The heat dissipation coefficient of the heat dissipation material is higher than that of each heat-generating component. Therefore, under the action of the heat sink 22, LCD screen heat sink 21, and light source heat sink 23, the heat dissipation rate is further improved.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A fully enclosed heat dissipation structure for an LCD projector, characterized in that: The projector includes a projector body (1), a heat dissipation unit (2) is provided on the projector body (1), a fan (3) is provided on the projector body (1) corresponding to the heat dissipation unit (2), the air outlet of the fan (3) forms an air duct (4), and the heat dissipation unit (2) is located in the air duct (4); The projector body (1) includes a frame (11), an optical engine body (12), an LCD display screen (16), a reflector (15), and a light source (17) connected in sequence. The fan (3) is set on the frame (11) corresponding to the optical engine body (12), the LCD display screen (16), and the reflector (15). Parts of the optical engine body (12), the LCD display screen (16), and the reflector (15) are located in the air duct (4). The heat dissipation unit (2) is set on the part of the optical engine body (12), the reflector (15) located in the air duct (4), the LCD display screen (16), and the light source (17).

2. The fully enclosed LCD projector heat dissipation structure according to claim 1, characterized in that: The projector body (1) also includes an LCD power driver board (13) and an LCD main control board (14). The LCD power driver board (13) and the LCD main control board (14) are both fixed on the frame (11). The LCD power driver board (13) and the LCD main control board (14) are symmetrically distributed on the upper and lower sides of the reflector cup (15), and the LCD power driver board (13) and the LCD main control board (14) are both located in the air duct (4).

3. The fully enclosed LCD projector heat dissipation structure according to claim 2, characterized in that: The heat dissipation unit (2) includes an LCD screen heat sink (21), a reflector heat sink (22), and a light source heat sink (23). The LCD screen heat sink (21) is located in the air duct (4) and connected to the LCD screen (16), and the two are integrated. The reflector heat sink (22) is fixed on the reflector cup (15). The light source heat sink (23) is connected to the light source (17) and fixed on the frame (11) at the position corresponding to the reflector cup (15). The light source heat sink (23) is located at... Inside the air duct (4), the light source heat sink (23) includes a copper pipe (233), a mounting plate (234), a first fin group (231), and a second fin group (232). The copper pipe (233) is connected to the frame (11) through the mounting plate (234). The copper pipe (233) passes through the mounting plate (234), the first fin group (231), and the second fin group (232) in sequence, and is fixed inside the mounting plate (234), the first fin group (231), and the second fin group (232).

4. The fully enclosed LCD projector heat dissipation structure according to claim 3, characterized in that: The light source (17) is fixed to the mounting plate (234) by thermally conductive silicone grease, and the light source (17) is located inside the reflector cup (15).

5. The fully enclosed LCD projector heat dissipation structure according to claim 3, characterized in that: The air duct (4) includes a first channel (41) and a second channel (42) that are connected. The LCD main control board (14), the reflector (15), and the LCD power drive board (13) are arranged from top to bottom and are arranged along the air outlet direction of the first channel (41) together with the first fin group (231). The LCD screen heat sink (21), the LCD display screen (16), the optical engine body (12) and the second fin group (232) are arranged along the air outlet direction of the second channel (42) and are located in the second channel (42).

6. The fully enclosed LCD projector heat dissipation structure according to claim 5, characterized in that: The number of the light cup heat sink (22) is two, and the two light cup heat sinks (22) are fixed on the reflector cup (15) in an up-down symmetrical manner.

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