Projector with reciprocating heat dissipation function

Abstract

The utility model belongs to the technical field of projector heat dissipation, and particularly relates to a projector with reciprocating heat dissipation, which comprises a projector body and a liquid crystal display screen, an inner wall of the projector body is fixedly connected with an inner circulation air duct, an inner partition plate is mounted in the inner circulation air duct, a lower mounting box is mounted in the inner circulation air duct, and the liquid crystal display screen is mounted in the lower mounting box. An outer cooling air duct is fixedly connected to the top end of the inner circulating air duct, upper mounting boxes are fixedly connected to the two ends of the outer cooling air duct, a first outer cooling fan is fixedly connected to the inner wall of one upper mounting box, and a second outer cooling fan is fixedly connected to the inner wall of the other upper mounting box; the heat dissipation effect on the liquid crystal display screen can be effectively achieved by means of overlapping matching of the inner partition plate and the lower mounting box, the first outer heat dissipation fan and the second outer heat dissipation fan alternately extract external air to be conveyed into the outer cooling air channel in the opposite direction, and the load of a single heat dissipation fan can be reduced by means of guiding of the airflow path plate and the airflow path hole for airflow.

Description

Technical Field

[0001] This utility model belongs to the field of projector heat dissipation technology, specifically relating to a projector with reciprocating heat dissipation. Background Technology

[0002] As a crucial component of modern multimedia equipment, projectors generate significant heat during operation due to their internal electronic components. The LCD screen, in particular, is extremely sensitive to temperature changes. Inadequate heat dissipation can lead to performance degradation, shortened lifespan, or even malfunction. Current projector cooling systems often employ an external airflow system in conjunction with a heatsink to cool the internal airflow. This helps prevent dust from the external air from contacting the LCD screen. However, external air still needs to enter the projector and interact with the heatsink and cooling channels. Therefore, a filter is necessary at the air intake to remove dust. Current external airflow systems rely on cooling fans to draw in external air for heat dissipation, requiring continuous operation. These fans flow in the same direction both in intake and exhaust. Over time, dust accumulates on the filter, increasing intake resistance and hindering airflow circulation. This not only reduces cooling efficiency due to decreased airflow but also increases the fan's workload. Utility Model Content

[0003] This invention provides a projector with reciprocating heat dissipation, which can improve the cooling effect and reduce the operating load of the cooling fan.

[0004] This utility model provides the following technical solution: a projector with reciprocating heat dissipation, including a projector body and an LCD screen. An internal circulation air duct is fixedly connected to the inner wall of the projector body. An inner partition plate is installed inside the internal circulation air duct. A lower mounting box is installed inside the internal circulation air duct. An external cooling air duct is fixedly connected to the top of the internal circulation air duct. Upper mounting boxes are fixedly connected to both ends of the external cooling air duct. An external cooling fan 1 is fixedly connected to the inner wall of one upper mounting box, and an external cooling fan 2 is fixedly connected to the inner wall of the other upper mounting box. Airflow path plates are fixedly connected to the inner walls of both upper mounting boxes. The two airflow path plates are located outside the external cooling fan 1 and the external cooling fan 2, respectively. Airflow path holes are opened on the side walls of the airflow path plates. Two filters are installed on the side walls of the projector body.

[0005] The projector body has a heat dissipation hole one on its side wall and a heat dissipation hole two on its side wall.

[0006] The inner wall of the internal circulation duct is fixedly connected to an internal circulation radiator, which is fixedly connected to the liquid crystal display screen.

[0007] The internal circulation duct is fixedly connected to two internal circulation radiators, and the internal circulation radiator is fixedly connected to the internal circulation radiator.

[0008] One of the lower mounting boxes has an internal circulation cooling fan fixedly connected to its inner wall.

[0009] One of the upper mounting boxes has a connecting pipe 1 fixedly connected to its side wall, and the other upper mounting box has a connecting pipe 2 fixedly connected to its side wall.

[0010] The inner partition plate and the heat dissipation component of the lower mounting box extend into the upper mounting box.

[0011] The beneficial effects of this utility model are as follows: the superimposed cooperation of the inner partition plate and the lower mounting box can effectively improve the heat dissipation of the LCD screen. By alternately drawing in external air and delivering it into the external cooling air duct in opposite directions through the external cooling fan one and external cooling fan two, and with the airflow path plate and airflow path holes guiding the airflow, the load of a single cooling fan can be reduced. Furthermore, the dust attached to the two filters can be cleaned alternately during the cooling process. By reducing the air intake obstruction, the cooling effect can be further improved, and the operating load of external cooling fan one and external cooling fan two can be further reduced.

[0012] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the internal circulation air duct in this utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the cooling air duct in this utility model;

[0016] Figure 4 for Figure 3 Enlarged view of part A in the middle.

[0017] In the diagram: 1. Projector body; 11. LCD screen; 12. Heat dissipation hole one; 13. Heat dissipation hole two; 2. Internal circulation air duct; 21. Inner partition plate; 22. Lower mounting box; 23. Internal circulation radiator one; 24. Internal circulation radiator two; 25. Internal circulation cooling fan; 3. External cooling air duct; 31. Upper mounting box; 32. External cooling fan one; 33. External cooling fan two; 34. Airflow path plate; 35. Airflow path hole; 36. Connecting pipe one; 37. Connecting pipe two; 4. Filter screen. Detailed Implementation

[0018] Please see Figures 1-4 The present invention provides the following technical solution: a projector with reciprocating heat dissipation, comprising a projector body 1 and an LCD screen 11, an inner circulation duct 2 fixedly connected to the inner wall of the projector body 1, an inner partition plate 21 installed in the inner circulation duct 2, a lower mounting box 22 installed in the inner circulation duct 2, an outer cooling duct 3 fixedly connected to the top of the inner circulation duct 2, and upper mounting boxes 31 fixedly connected to both ends of the outer cooling duct 3, an outer cooling fan 32 fixedly connected to the inner wall of one upper mounting box 31, an outer cooling fan 33 fixedly connected to the inner wall of the other upper mounting box 31, an airflow path plate 34 fixedly connected to the inner walls of both upper mounting boxes 31, the two airflow path plates 34 being located outside the outer cooling fan 32 and the outer cooling fan 33 respectively, an airflow path hole 35 being opened on the side wall of the airflow path plate 34, and two filters 4 installed on the side wall of the projector body 1.

[0019] In this implementation scheme: When the device is working, the gas in the internal circulation duct 2 circulates under the action of the internal circulation cooling fan 25. When the airflow passes through the inner partition plate 21 and the lower mounting box 22, it is cooled by the inner partition plate 21 and the lower mounting box 22. The cooled airflow cools the LCD screen 11. The combined effect of the inner partition plate 21 and the lower mounting box 22 can effectively dissipate heat from the LCD screen 11. During the heat dissipation process, the external cooling fan 32 simultaneously draws in external air into the upper mounting box 31. After passing through the airflow path hole 35 and the heat dissipation component of the inner partition plate 21, it enters the external cooling duct 3. After passing through the heat dissipation component of the lower mounting box 22, it enters another airflow path plate 34 and is then discharged to the outside through the connecting pipe 37. During this process, the air entering the external cooling duct 3 cools the inner partition plate 21 and the lower mounting box 22, thereby cooling the air in the internal circulation duct 2. After the external cooling fan 32 has been running for a certain period of time, the controller controls the external cooling fan 32 to cool the internal partition plate 21 and the lower mounting box 22. 2. Stop working and simultaneously control the start of external cooling fan 2 33 to draw in external air. The external air flows through the same flow path in the opposite direction and is then discharged through connecting pipe 1 36. During operation, the controller controls external cooling fan 1 32 and external cooling fan 2 33 to start alternately. By alternately drawing in external air and delivering it into the external cooling duct 3 in the opposite direction, the load on a single cooling fan can be reduced. When the airflow flows in the opposite direction, it will exhaust to the outside through the filter screen 4. This can clean the dust attached to the two filters 4 alternately during the cooling process. By reducing the air intake resistance, the air intake volume can be increased, thereby further improving the cooling effect and further reducing the operating load of external cooling fan 1 32 and external cooling fan 2 33. The airflow path plate 34 and airflow path hole 35 play a guiding role so that the bidirectional flowing gas can pass through the heat dissipation components of the inner partition plate 21 and the lower mounting box 22, thereby cooling the inner partition plate 21 and the lower mounting box 22.

[0020] The projector body 1 has a heat dissipation hole 12 on its side wall and a heat dissipation hole 23 on its side wall; the installation of the filter screen 4 can be facilitated by setting heat dissipation hole 12 and heat dissipation hole 23.

[0021] An internal circulation radiator 23 is fixedly connected to the inner wall of the internal circulation air duct 2, and the internal circulation radiator 23 is fixedly connected to the LCD screen 11. By setting the internal circulation radiator 23, a circulation channel can be formed in the internal circulation air duct 2, so that the airflow can circulate and cool the two sides of the LCD screen 11.

[0022] Both ends of the internal circulation air duct 2 are fixedly connected to the internal circulation radiator 24, and the internal circulation radiator 1 23 is fixedly connected to the internal circulation radiator 24. By setting the internal circulation radiator 24, installation space can be provided for the internal partition plate 21, the lower mounting box 22 and the internal circulation cooling fan 25.

[0023] An internal circulation cooling fan 25 is fixedly connected to the inner wall of one of the lower mounting boxes 22; by setting the internal circulation cooling fan 25, the air in the internal circulation duct 2 can be drawn and circulated in the internal circulation duct 2.

[0024] One of the upper mounting boxes 31 has a connecting pipe 36 fixedly connected to its side wall, and the other upper mounting box 31 has a connecting pipe 37 fixedly connected to its side wall; the connecting pipe 36 and the connecting pipe 37 can connect the upper mounting box 31 to the casing of the projector body 1 to prevent the drawn-out external air from entering the rest of the projector body 1.

[0025] The heat dissipation components of the inner partition plate 21 and the lower mounting box 22 extend into the upper mounting box 31; the heat dissipation components of the inner partition plate 21 and the lower mounting box 22 extend into the upper mounting box 31 and thus come into contact with the outside air; the heat dissipation components of the inner partition plate 21 and the lower mounting box 22 are sealed to the upper mounting box 31.

[0026] The working principle and usage process of this utility model: The gas in the internal circulation duct 2 circulates under the action of the internal circulation cooling fan 25. When the airflow passes through the inner partition plate 21 and the lower mounting box 22, it is cooled by the inner partition plate 21 and the lower mounting box 22. The cooled airflow then cools the LCD screen 11. The combined effect of the inner partition plate 21 and the lower mounting box 22 effectively dissipates heat from the LCD screen 11. During the heat dissipation process, the external cooling fan 32 simultaneously draws in external air into the upper mounting box 31. After passing through the airflow path hole 35 and the heat dissipation component of the inner partition plate 21, it enters the external cooling duct 3. Then, after passing through the heat dissipation component of the lower mounting box 22, it enters another airflow path plate 34 and is then discharged externally through the connecting pipe 37. During this process, the air entering the external cooling duct 3 from the outside cools the inner partition plate 21 and the lower mounting box 22, thereby cooling the internal circulation duct 3. The air inside the air duct 2 is cooled. After the external cooling fan 32 has been running for a certain period of time, the controller controls the external cooling fan 32 to stop working and simultaneously controls the external cooling fan 33 to start, drawing in external air. The external air flows through the same flow path in the opposite direction and is then discharged through the connecting pipe 36. During operation, the controller controls the external cooling fan 32 and the external cooling fan 33 to start alternately. By alternately drawing in external air and delivering it into the external cooling air duct 3 in the opposite direction, the load on a single cooling fan can be reduced. When the airflow flows in the opposite direction, it will exhaust to the outside through the filter screen 4. This allows the dust attached to the two filters 4 to be cleaned alternately during the cooling process. By reducing the air intake resistance, the air intake volume can be increased, thereby further improving the cooling effect and further reducing the operating load of the external cooling fan 32 and the external cooling fan 33.

Claims

1. A projector with reciprocating heat dissipation, comprising a projector body (1) and a liquid crystal display screen (11), characterized in that: The inner wall of the projector body (1) is fixedly connected to an internal circulation air duct (2). An inner partition plate (21) is installed in the internal circulation air duct (2). A lower mounting box (22) is installed in the internal circulation air duct (2). An external cooling air duct (3) is fixedly connected to the top of the internal circulation air duct (2). An upper mounting box (31) is fixedly connected to both ends of the external cooling air duct (3). An external cooling fan (32) is fixedly connected to the inner wall of one of the upper mounting boxes (31). An external cooling fan (33) is fixedly connected to the inner wall of the other upper mounting box (31). An airflow path plate (34) is fixedly connected to the inner wall of both upper mounting boxes (31). The two airflow path plates (34) are located outside the external cooling fan (32) and the external cooling fan (33) respectively. An airflow path hole (35) is opened on the side wall of the airflow path plate (34). Two filters (4) are installed on the side wall of the projector body (1).

2. A projector with reciprocating heat dissipation according to claim 1, characterized in that: The projector body (1) has a heat dissipation hole 1 (12) on its side wall and a heat dissipation hole 2 (13) on its side wall.

3. A projector with reciprocating heat dissipation according to claim 1, characterized in that: An internal circulation radiator (23) is fixedly connected to the inner wall of the internal circulation duct (2), and the internal circulation radiator (23) is fixedly connected to the liquid crystal display screen (11).

4. A projector with reciprocating heat dissipation according to claim 3, characterized in that: Both ends of the internal circulation duct (2) are fixedly connected to the second internal circulation radiator (24), and the first internal circulation radiator (23) is fixedly connected to the second internal circulation radiator (24).

5. A projector with reciprocating heat dissipation according to claim 1, characterized in that: An internal circulation cooling fan (25) is fixedly connected to the inner wall of one of the lower mounting boxes (22).

6. A projector with reciprocating heat dissipation according to claim 1, characterized in that: One of the upper mounting boxes (31) has a connecting pipe 1 (36) fixedly connected to its side wall, and the other upper mounting box (31) has a connecting pipe 2 (37) fixedly connected to its side wall.

7. A projector with reciprocating heat dissipation according to claim 1, characterized in that: The heat dissipation components of the inner partition plate (21) and the lower mounting box (22) extend into the upper mounting box (31).

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