Internal and external circulation heat dissipation system of single-chip LCD projector

Abstract

The utility model discloses an internal and external circulation heat radiation system of a single-chip LCD projector, which comprises a second heat radiator, a single stator arranged on the inner side of a first heat radiator, a linkage rotor fan and a rotor fan which are connected with the single stator, and a third heat radiator arranged at an air outlet of the linkage rotor fan, the light cup and the LED lamp assembly are arranged at an air outlet of the third radiator, the first radiator is arranged at an air outlet of the rotor fan, the first Fresnel lens, the heat insulation glass and the LCD screen are vertically arranged at an air outlet of the first radiator at intervals, and the second Fresnel lens is arranged on the outer side of the LCD screen at intervals. The linkage rotor fan and the rotor fan are arranged at intervals, and the first Fresnel lens, the heat insulation glass and the LCD screen are arranged at intervals to form two sets of air channels. According to the utility model, the temperature of the liquid crystal screen can be effectively controlled, and the service life of the fan is effectively prolonged.

Description

Technical Field

[0001] The utility model relates to a projector heat dissipation technology, in particular to an internal and external circulation heat dissipation system of a single-chip LCD projector. Background Art

[0002] The projector market has experienced rapid growth in recent years. As we all know, the quality and visual quality of a projector depend largely on the quality of its cooling system. Complaints of yellowing and blackening of the screen after a period of use are common. Currently, single-chip LCD projectors on the market mostly utilize a single fan for internal cooling, or a single fan with an external heat sink and copper pipes for heat dissipation, or a separate fan for air cooling of the heat sink. Multiple fans also have limitations when it comes to motherboard configuration, and adding copper pipes increases costs. Even with these solutions, the high heat generated by the optical cup leads to elevated temperatures for the entire internal components, and the internal cooling fan remains susceptible to damage due to prolonged exposure to high temperatures. Utility Model Content

[0003] Purpose of the utility model: The purpose of the utility model is to provide an internal and external circulation heat dissipation system for a single-chip LCD projector, which can effectively control the temperature of the LCD screen and effectively increase the service life of the fan.

[0004] Technical solution: The utility model is an internal and external circulation heat dissipation system for a single-chip LCD projector, comprising a second radiator, a single stator arranged on the inner side of a first radiator, a linked rotor fan and a rotor fan connected to the single stator, a third radiator arranged at the air outlet of the linked rotor fan, a light cup and an LED lamp assembly arranged at the air outlet of the third radiator, a first radiator arranged at the air outlet of the rotor fan, a first filter, heat-insulating glass and an LCD screen vertically spaced apart at the air outlet of the first radiator, and a second filter spaced apart on the outside of the LCD screen; the linked rotor fan and the rotor fan are spaced apart, and the first filter, heat-insulating glass and LCD screen are spaced apart to form two groups of air ducts.

[0005] Furthermore, a space is reserved between the side surface of the rotor fan and the first radiator to facilitate the return of wind to the rotor fan.

[0006] Furthermore, the rotor fan, the first radiator, the first mirror, the heat-insulating glass, the LCD screen, the second mirror, and the second radiator together form a closed optical machine internal circulation heat dissipation channel for achieving internal circulation heat dissipation.

[0007] Furthermore, the linked rotor fan, the third radiator, and the optical cup together form an external circulation heat dissipation channel for achieving external circulation heat dissipation.

[0008] Furthermore, the heat-insulating glass, LCD screen and second mirror are fixedly installed on the optical machine in sequence.

[0009] Furthermore, the optical machine includes an arc-shaped optical machine air duct structure, and the upper ends of the first Philips mirror and the second Philips mirror are connected through the arc-shaped optical machine air duct structure, so that the wind coming out of the double air ducts can return to the rotor fan.

[0010] Furthermore, the air ducts of the first radiator and the third radiator are designed to be larger in the middle and smaller at both ends, so as to increase the speed of air flow and improve the heat dissipation efficiency by reducing the width of the air duct.

[0011] Furthermore, the LED lamp assembly, the optical cup, and the first filament mirror constitute an optical path assembly, and the optical path assembly is fixedly mounted on the optical machine to achieve stable installation of the optical path assembly.

[0012] Furthermore, the side of the linked rotor fan away from the rotor fan is an air inlet, and the outer air inlet of the rotor fan forms suction. The outside wind enters the outer air inlet of the rotor fan along the outside of the radiator through the wind path formed by the projected shell, so that the radiator is further cooled quickly.

[0013] Furthermore, the single stator includes a fan, which is installed on the external circulation heat dissipation channel. The working environment temperature is much lower than the internal temperature of the optical machine, which greatly reduces the damage rate of the fan.

[0014] Beneficial effects: Compared with the prior art, the significant technical effects of this utility model are:

[0015] This solution can simultaneously perform internal and external circulation heat dissipation by setting up a linked rotor fan and a rotor fan and an internal and external circulation heat dissipation channel, effectively controlling the temperature of the LCD screen, thereby effectively reducing the product fan noise, effectively increasing the service life of the fan, and achieving a certain degree of cost reduction and efficiency improvement in product design costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a working principle diagram of the internal and external circulation heat dissipation system of a single-chip LCD projector described in the utility model. DETAILED DESCRIPTION

[0017] The technical solution of the present utility model is described in detail below in conjunction with specific implementation methods and the accompanying drawings.

[0018] like Figure 1As shown, the present invention provides an internal / external circulation cooling system for a single-chip LCD projector. The system comprises the following components: an LED lamp assembly 1, an optical cup 2, a first filter 3, insulating glass 4, an LCD screen 5, a second filter 6, a first radiator 7, a rotor fan 8, a linked rotor fan 9, a single stator 10, a second radiator 11, and a third radiator 12. The specific installation and connection method is as follows: the single stator 10 is positioned inside the first radiator 11, and the linked rotor fan 9 and rotor fan 8 are connected to the single stator 10. The third radiator 12 is positioned at the outlet of the linked rotor fan 9, the optical cup 2 and the LED lamp assembly 1 are positioned at the outlet of the third radiator 12, the first radiator 7 is positioned at the outlet of the rotor fan 8, the first filter 3, insulating glass 4, and LCD screen 5 are vertically spaced apart at the outlet of the first radiator 7, and the second filter 6 is positioned outside the LCD screen 5. The linked rotor fan 9 and rotor fan 8 are spaced apart, leaving a reserved air duct. The first filter 3, insulating glass 4, and LCD screen 5 are spaced apart to form two sets of air ducts. The LED lamp assembly 1, optical cup 2, and first mirror 3 form an optical path assembly, which is fixedly mounted on the optical machine. In this embodiment, one end of the optical cup 2 is connected to the LED lamp assembly 1, and the other end is connected to the first mirror 3. The heat-insulating glass 4, LCD screen 5, second mirror 6, as well as the reflector and lens are fixedly mounted on the optical machine in this order. The optical machine includes a curved optical machine air duct structure, through which the upper ends of the first mirror 3 and the second mirror 6 are connected. Space is reserved between the side of the rotor fan 8 and the first radiator 11 to allow air exiting the air duct between the LCD screen 5 and the second mirror 6 to return to the rotor fan 8.

[0019] The rotor fan 8, first radiator 7, first filter 3, heat-insulating glass 4, LCD screen 5, second filter 6, and first radiator 11 together form a closed internal heat dissipation channel for the optical machine. The linked rotor fan 9, third heat dissipation channel 12, and optical cup 2 together form an external heat dissipation channel.

[0020] The single stator 10 includes a fan, which is installed in the external circulation heat dissipation channel. The operating environment temperature is much lower than the internal temperature of the optical machine, greatly reducing the damage rate of the fan. This solution mainly consists of a two-way fan consisting of a single stator 10, a linked rotor fan 9 and a rotor fan 8. The single stator 10 is designed to be installed in the external circulation air duct.

[0021] Working process: When the rotor fan 8 rotates, the wind passes through the air duct formed by the first radiator 7 and blows toward the first mirror 3, the insulating glass 4, and the inside of the LCD screen 5. Here, the air duct of the first radiator 7 is shaped in a large shape at both ends and a small shape in the middle according to the Bernoulli principle. When the wind is blown out from the rotor fan 8, it passes through the wide air duct of the first radiator 7 to the narrow air duct. By reducing the width of the air duct, the air flow speed is increased, and the heat dissipation efficiency is improved. Then the air duct widens and disperses the air flow, avoiding damage to internal components caused by high-speed flow. The air flow can be evenly distributed to ensure that the first mirror 3, the insulating glass 4, and the LCD screen 5 can all be cooled. The wind flows out of the first mirror 3, the insulating glass 4, and the inside of the LCD screen 5, and then passes through the loop formed by the optical-mechanical air duct structure, returns through the air duct formed outside the LCD screen 5 and inside the second mirror 6, and then passes through the second radiator 11 to absorb some heat before flowing into the side air inlet of the rotor fan 8 to form an internal circulation heat dissipation air path closed loop. The other side of the rotor fan 8 is closed to prevent external dust from entering the internal circulation heat dissipation air path.

[0022] When the linked rotor fan 9 rotates, the wind passes through the air duct formed by the third radiator 12 and blows toward the LED lamp assembly 1 and the light cup 2. Here, the air duct of the third radiator 12 is also in a shape that is large at both ends and small in the middle according to the Bernoulli principle, forming a Bernoulli heat dissipation effect. The wind that passes through the LED lamp assembly 1 and the light cup 2 turns back along the light cup 2 and passes through the second radiator 11 for cooling before returning to the inner air inlet of the linked rotor fan 9 to form a circulating air path. The side of the linked rotor fan 9 away from the rotor fan 8 is the air inlet, and the outer air inlet of the linked rotor fan 9 forms a suction force. The outside wind passes through the air path formed by the projected outer shell and enters the outer air inlet of the linked rotor fan 9 along the outside of the second radiator 11, causing the third radiator 12 to further quickly cool down, forming a closed loop of the external circulation heat dissipation air path.

[0023] In the internal and external circulation heat dissipation air path, when the wind passes through the first radiator 7, the second radiator 11, and the third radiator 12, the first radiator 7, the second radiator 11, and the third radiator 12 themselves are also cooled by air.

Claims

1. An internal and external circulation heat dissipation system for a single-chip LCD projector, characterized by: The invention comprises a second radiator (11), a single stator (10) arranged inside the second radiator (11), a linked rotor fan (9) and a rotor fan (8) connected to the single stator (10), a third radiator (12) arranged at the air outlet of the linked rotor fan (9), a light cup (2) and an LED lamp assembly (1) arranged at the air outlet of the third radiator (12), a first radiator (7) arranged at the air outlet of the rotor fan (8), a first mirror (3), a heat-insulating glass (4) and an LCD screen (5) arranged vertically at intervals at the air outlet of the first radiator (7), and a second mirror (6) arranged at intervals outside the LCD screen (5); the linked rotor fan (9) and the rotor fan (8) are arranged at intervals, and the first mirror (3), the heat-insulating glass (4) and the LCD screen (5) are arranged at intervals to form two groups of air ducts.

2. The internal and external circulation heat dissipation system for a single-chip LCD projector according to claim 1, characterized in that: A space is reserved between the side surface of the rotor fan (8) and the second radiator (11).

3. The internal and external circulation heat dissipation system for a single-chip LCD projector according to claim 2, characterized in that: The rotor fan (8), the first radiator (7), the first mirror (3), the heat-insulating glass (4), the LCD screen (5), the second mirror (6), and the second radiator (11) together form a closed optical machine internal circulation heat dissipation channel.

4. The internal and external circulation heat dissipation system for a single-chip LCD projector according to claim 1, characterized in that: The linked rotor fan (9), the third radiator (12), and the optical cup (2) together enclose an external circulation heat dissipation channel.

5. The internal and external circulation heat dissipation system for a single-chip LCD projector according to claim 1, characterized in that: The heat-insulating glass (4), LCD screen (5), and second mirror (6) are fixedly mounted on the optical machine in sequence.

6. The internal and external circulation heat dissipation system for a single-chip LCD projector according to claim 5, characterized in that: The optical machine comprises an arc-shaped optical machine air duct structure, and the upper ends of the first Fibonacci mirror (3) and the second Fibonacci mirror (6) are connected through the arc-shaped optical machine air duct structure.

7. The internal and external circulation heat dissipation system for a single-chip LCD projector according to claim 1, characterized in that: The air ducts of the first radiator (7) and the third radiator (12) are designed to be large in the middle and small at both ends.

8. The internal and external circulation heat dissipation system for a single-chip LCD projector according to claim 1, characterized in that: The LED lamp assembly (1), the optical cup (2), and the first filament mirror (3) form an optical path assembly, which is fixedly mounted on the optical machine.

9. The internal and external circulation heat dissipation system for a single-chip LCD projector according to claim 1, characterized in that: The side of the linked rotor fan (9) away from the rotor fan (8) is an air inlet.

10. The internal and external circulation heat dissipation system for a single-chip LCD projector according to claim 4, characterized in that: The single stator (10) includes a fan, which is installed on the external circulation heat dissipation channel.

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