Internal and external air exchange heat exchange device of LCD projector

Abstract

The utility model relates to the technical field of LCD (Liquid Crystal Display) projectors, in particular to an internal and external air exchange heat exchange device of an LCD projector, which comprises a shell, a projection lamp and a heat exchange component, and is characterized in that the projection lamp is arranged on the inner wall of the shell, a cover plate is arranged on the upper surface of the shell, a damping fin is arranged on the lower surface of the shell, and the heat exchange component is arranged in the shell. The heat exchange assembly is arranged behind the shell; the heat exchange assembly comprises an installation unit, the installation unit comprises a protection baffle, an installation cavity is formed in the rear portion of the shell, the protection baffle abuts against the inner wall of the installation cavity, a groove hole is formed in the surface of the protection baffle, and a fixing screw is inserted in the position, located on the inner wall of the groove hole, of the protection baffle. According to the utility model, the heat exchange assembly is arranged, so that the heat dissipation efficiency of the equipment is increased, the problem that the equipment is difficult to dissipate heat in a high-power state when a single fan is adopted for heat dissipation is reduced, and the heat dissipation effect of the equipment is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of LCD projectors, in particular to an internal and external wind exchange heat exchange device of an LCD projector. Background Art

[0002] LCD projectors are high-tech products brought about by the development of liquid crystal technology, lighting technology and integrated circuits. Their key technology is the manufacture of liquid crystal panels. LCD projectors use the photoelectric effect of liquid crystal, that is, the arrangement of liquid crystal molecules changes under the action of an electric field, affecting the transmittance or reflectivity of its liquid crystal unit, thereby affecting its optical properties and producing images with different gray levels and colors. When the LCD projector is working, the heat exchange device installed inside it will work and exchange internal and external winds to dissipate heat and cool the LCD projector.

[0003] The inventor discovered in his daily work that, in the process of dissipating heat from an LCD projector with the help of a heat exchange device, some LCD projectors currently on the market only rely on a single cooling fan to assist in dissipating heat and cooling. When the power of the LCD projector is increased, the heat generated by the LCD projector will increase. When only a single fan is used to dissipate heat, the heat generated by the LCD projector in a high-power state is difficult to dissipate in time, causing the heat dissipation efficiency of the LCD projector to be unable to meet its own needs, resulting in the temperature of the LCD projector being too high, causing its internal parts to operate in a high-temperature state for a long time, resulting in a reduced service life of the LCD projector. Utility Model Content

[0004] The purpose of the utility model is to solve the problem in the prior art that the heat generated by an LCD projector in a high-power state is difficult to dissipate in time, causing the heat dissipation efficiency of the LCD projector to be unable to meet its own needs, resulting in the temperature of the LCD projector being too high, causing its internal parts to operate in a high-temperature state for a long time, resulting in a shortened service life of the LCD projector, and to propose an internal and external wind exchange heat exchange device for an LCD projector.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an internal and external wind exchange heat exchange device of an LCD projector, comprising a housing, a projection lamp and a heat exchange component, wherein the projection lamp is installed on the inner wall of the housing, a cover plate is provided on the upper surface of the housing, a damping sheet is installed on the lower surface of the housing, and the heat exchange component is arranged at the rear of the housing;

[0006] The heat exchange assembly includes a mounting unit, and the mounting unit includes a protective baffle. A mounting cavity is provided at the rear of the shell, and the protective baffle abuts against the inner wall of the mounting cavity. A slot is provided on the surface of the protective baffle, and a fixing screw is inserted into the inner wall of the protective baffle located at the slot, and the fixing screw is threadedly connected to the inner wall of the mounting cavity. A ventilation hole is provided on the surface of the protective baffle, and a groove is provided on the surface of the protective baffle, and a dust screen is fixedly connected to the inner wall of the protective baffle located at the groove;

[0007] The heat exchange component also includes a ventilation unit, which includes a heat dissipation fan, which is bolted to the side surface of the protective baffle, and the inner wall of the outer shell located in the installation cavity is bolted with a heat conducting plate, which abuts the side surface of the heat dissipation fan, and the side surface of the heat conducting plate is fixedly connected with heat dissipation fins, and the heat dissipation fins are located inside the outer shell, and the side surface of the protective baffle is bolted with an intake fan, and the inner wall of the outer shell located in the installation cavity is bolted with a wind gathering plate, which abuts the side surface of the intake fan, and the side surface of the wind gathering plate is fixedly connected with a guide pipe, and an air guide cavity is opened on the surface of the wind gathering plate, and the guide pipe is connected with the inner wall of the air guide cavity, and the guide pipe is located on the inner wall of the outer shell.

[0008] Preferably, a socket is provided on the inner wall of the installation cavity of the shell, a ventilation hole is provided on the inner wall of the installation cavity of the shell, and a through hole is provided on the inner wall of the installation cavity of the shell. By providing the ventilation hole in the installation cavity, the installation cavity can be connected with the inside of the shell, thereby increasing air flow.

[0009] Preferably, the number of the fixing screws is four, and the four fixing screws are arranged diagonally with respect to the protective baffle. By installing the fixing screws on the protective baffle, the protective baffle can be confined in the installation cavity when tightened, thereby protecting the interior of the installation cavity.

[0010] Preferably, the ventilation hole is connected to the inner wall of the installation cavity, and the dustproof net is connected to the inner wall of the ventilation hole. By installing the dustproof net on the surface of the protective baffle, dust in the air can be filtered during the air flow.

[0011] Preferably, the cooling fan is located on the inner wall of the installation cavity, the cooling fan is connected to the inner wall of the ventilation hole, and the cooling fan is connected to the inner wall of the air hole. By installing the cooling fan in the installation cavity, the heat in the outer casing can be extracted from the outer casing in cooperation with the air hole during power-on operation to improve the heat dissipation efficiency of the equipment.

[0012] Preferably, the heat dissipation fins are plugged into the inner wall of the socket, and there are multiple heat dissipation fins, which are vertically arranged with respect to the heat conducting plate. The heat dissipation fins installed on the heat conducting plate can guide the heat in the outer casing to the heat conducting plate, and the heat dissipation effect can be achieved through the heat conducting plate and the heat dissipation fan.

[0013] Preferably, the air intake fan is connected with the inner wall of the ventilation hole, the air intake fan is connected with the inner wall of the air guide cavity, and the guide pipe is plugged into the inner wall of the through hole. When the air intake fan is installed in the installation cavity, the air can be blown into the interior of the device in conjunction with the wind collecting plate and the guide pipe to increase the heat dissipation effect of the equipment.

[0014] Compared with the prior art, the advantages and positive effects of the utility model are:

[0015] In the utility model, by setting a heat exchange component, when the equipment is powered on for projection, the intake fan is powered on and works in conjunction with the ventilation holes to absorb outside air, so that the external air forms wind, and with the cooperation of the wind gathering plate, the flowing air is guided into the guide tube. When the intake fan is working, the dustproof net on the protective baffle will filter the dust in the air, and the flowing high-speed air is blown into the outer shell under the guidance of the guide tube, and the parts in the outer shell are dissipated and cooled. When the intake fan is working, the heat dissipation fins located inside the outer shell absorb the heat in the outer shell, and transfer the absorbed heat to the heat conduction plate. At the same time, the heat dissipation fan works and cooperates with the heat conduction plate to dissipate the absorbed heat. When the heat dissipation fan is working, it will cooperate with the ventilation holes to draw the air in the outer shell to increase the flow efficiency of the air inside the outer shell, so as to further improve the heat dissipation effect of the equipment. By setting the heat exchange component, the heat dissipation efficiency of the equipment is increased, thereby reducing the problem of difficulty in fully dissipating the heat of the equipment in a high-power state when a single fan is used for heat dissipation, and further improving the heat dissipation effect of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model provides a three-dimensional structural schematic diagram of an internal and external wind heat exchange device for an LCD projector;

[0017] Figure 2 This is a schematic diagram of the structure of an internal and external wind heat exchange device of an LCD projector proposed by the utility model;

[0018] Figure 3 The utility model provides a rear view structural schematic diagram of an internal and external wind exchange heat exchange device for an LCD projector;

[0019] Figure 4 This is a rear side front view of a body of an internal and external wind heat exchange device for an LCD projector provided by the utility model;

[0020] Figure 5 The utility model provides a heat exchange component structure schematic diagram of an internal and external wind heat exchange device for an LCD projector;

[0021] Figure 6 The utility model provides a schematic diagram of the structure of a heat exchange component of an internal and external wind heat exchange device for an LCD projector;

[0022] Figure 7 The utility model provides a partial structural schematic diagram of a heat exchange component of an internal and external wind heat exchange device of an LCD projector.

[0023] Legend:

[0024] 1. Casing; 2. Projection lamp; 3. Cover plate; 4. Damping plate; 5. Heat exchange component; 51. Mounting unit; 511. Mounting cavity; 512. Protective baffle; 513. Fixing screws; 514. Ventilation holes; 515. Dust screen; 52. Ventilation unit; 521. Cooling fan; 522. Heat conduction plate; 523. Cooling fins; 524. Socket; 525. Air vents; 526. Intake fan; 527. Wind gathering plate; 528. Guide pipe; 529. Through hole. DETAILED DESCRIPTION

[0025] See also Figure 1-7 The utility model provides a technical solution: an internal and external wind exchange heat exchange device of an LCD projector, comprising a shell 1, a projection lamp 2 and a heat exchange component 5, the projection lamp 2 is installed on the inner wall of the shell 1, a cover plate 3 is provided on the upper surface of the shell 1, a damping plate 4 is installed on the lower surface of the shell 1, and the heat exchange component 5 is arranged at the rear of the shell 1.

[0026] In this embodiment: the heat exchange component 5 includes a mounting unit 51, the mounting unit 51 includes a protective baffle 512, a mounting cavity 511 is opened at the rear of the housing 1, the protective baffle 512 is abutted against the inner wall of the mounting cavity 511, a slot is opened on the surface of the protective baffle 512, a fixing screw 513 is inserted into the inner wall of the slot of the protective baffle 512, the fixing screw 513 is threadedly connected to the inner wall of the mounting cavity 511, a ventilation hole 514 is opened on the surface of the protective baffle 512, a groove is opened on the surface of the protective baffle 512, and a dustproof net 515 is fixedly connected to the inner wall of the groove of the protective baffle 512;

[0027] The heat exchange component 5 also includes a ventilation unit 52, which includes a cooling fan 521, which is bolted to the side surface of the protective baffle 512, and a heat conducting plate 522 is bolted to the inner wall of the installation cavity 511 of the outer shell 1, which is in contact with the side surface of the cooling fan 521, and a cooling fin 523 is fixedly connected to the side surface of the heat conducting plate 522, and the cooling fin 523 is located inside the outer shell 1, and an air intake fan 526 is bolted to the side surface of the protective baffle 512, and a wind gathering plate 527 is bolted to the inner wall of the installation cavity 511 of the outer shell 1, which is in contact with the side surface of the air intake fan 526, and a guide pipe 528 is fixedly connected to the side surface of the wind gathering plate 527, and a wind guiding cavity is opened on the surface of the wind gathering plate 527, and the guide pipe 528 is connected to the inner wall of the wind guiding cavity, and the guide pipe 528 is located on the inner wall of the outer shell 1.

[0028] Specifically, a plug hole 524 is opened on the inner wall of the shell 1 located in the installation cavity 511, a ventilation hole 525 is opened on the inner wall of the shell 1 located in the installation cavity 511, and a through hole 529 is opened on the inner wall of the shell 1 located in the installation cavity 511. By opening the ventilation hole 525 in the installation cavity 511, the installation cavity 511 can be connected with the interior of the shell 1, thereby increasing air flow.

[0029] Specifically, there are four fixing screws 513 , and the four fixing screws 513 are arranged diagonally with respect to the protective baffle 512 .

[0030] In this embodiment, by means of fixing screws 513 installed on the protective baffle 512 , the protective baffle 512 can be confined within the installation cavity 511 in a tightened state, thereby protecting the interior of the installation cavity 511 .

[0031] Specifically, the ventilation hole 514 is connected to the inner wall of the installation cavity 511, and the dustproof net 515 is connected to the inner wall of the ventilation hole 514. By installing the dustproof net 515 on the surface of the protective baffle 512, dust in the air can be filtered during the air flow.

[0032] In this embodiment, the heat dissipation fan 521 is located on the inner wall of the installation cavity 511 , the heat dissipation fan 521 is communicated with the inner wall of the ventilation hole 514 , and the heat dissipation fan 521 is communicated with the inner wall of the air permeability hole 525 .

[0033] In this embodiment, the heat dissipation fan 521 installed in the installation cavity 511 can be used to extract heat from the housing 1 in cooperation with the air vents 525 during power-on operation to improve the heat dissipation efficiency of the device.

[0034] Specifically, the heat dissipation fins 523 are plugged into the inner wall of the socket 524, and there are multiple heat dissipation fins 523, which are vertically arranged with respect to the heat conducting plate 522. The heat dissipation fins 523 installed on the heat conducting plate 522 can guide the heat in the outer casing 1 to the heat conducting plate 522, and the heat dissipation effect can be achieved through the heat conducting plate 522 and the heat dissipation fan 521.

[0035] Specifically, the air intake fan 526 is connected to the inner wall of the ventilation hole 514 , the air intake fan 526 is connected to the inner wall of the air guide cavity, and the guide pipe 528 is plugged into the inner wall of the through hole 529 .

[0036] In this embodiment: by installing the air intake fan 526 in the installation cavity 511, when the air intake fan 526 is powered on, it can cooperate with the wind collecting plate 527 and the guide pipe 528 to blow air into the interior of the device to increase the heat dissipation effect of the device.

[0037] Working principle: When the device is powered on for projection, the air intake fan 526 is powered on to work with the ventilation holes 514 to absorb external air, so that the external air forms wind, and with the cooperation of the wind collecting plate 527, the flowing air is guided into the guide pipe 528. When the air intake fan 526 is working, the dustproof net 515 located on the protective baffle 512 will filter the dust in the air, and the flowing high-speed air is guided by the guide pipe 528 and blown into the housing 1 to dissipate heat and cool down the parts in the housing 1. When the air intake fan 526 is working, the heat dissipation fins 523 located inside the housing 1 1 absorbs the heat in the housing 1 and transfers the absorbed heat to the heat conducting plate 522. At the same time, the cooling fan 521 works to cooperate with the heat conducting plate 522 to dissipate the absorbed heat. When working, the cooling fan 521 will also cooperate with the air vents 525 to draw out the air in the housing 1 to increase the flow efficiency of the air inside the housing 1, so as to further improve the heat dissipation effect of the equipment. By setting the heat exchange component 5, the heat dissipation efficiency of the equipment is increased, thereby reducing the problem of difficulty in fully dissipating the heat of the equipment in a high-power state when a single fan is used for heat dissipation, and further improving the heat dissipation effect of the equipment.

Claims

1. An internal and external air exchange heat exchange device for an LCD projector, comprising a housing (1), a projection lamp (2) and a heat exchange component (5), characterized in that: The projection lamp (2) is mounted on the inner wall of the outer shell (1); a cover plate (3) is provided on the upper surface of the outer shell (1); a damping plate (4) is installed on the lower surface of the outer shell (1); and the heat exchange component (5) is arranged at the rear of the outer shell (1); The heat exchange component (5) comprises a mounting unit (51), the mounting unit (51) comprises a protective baffle (512), a mounting cavity (511) is provided at the rear of the housing (1), the protective baffle (512) is in contact with the inner wall of the mounting cavity (511), a slot is provided on the surface of the protective baffle (512), a fixing screw (513) is inserted into the inner wall of the slot of the protective baffle (512), the fixing screw (513) is threadedly connected to the inner wall of the mounting cavity (511), a ventilation hole (514) is provided on the surface of the protective baffle (512), a groove is provided on the surface of the protective baffle (512), and a dustproof net (515) is fixedly connected to the inner wall of the groove of the protective baffle (512); The heat exchange component (5) further comprises a ventilation unit (52), wherein the ventilation unit (52) comprises a heat dissipation fan (521), wherein the heat dissipation fan (521) is bolted to the side surface of the protective baffle (512), and the inner wall of the housing (1) located in the installation cavity (511) is bolted with a heat conduction plate (522), wherein the heat conduction plate (522) is in contact with the side surface of the heat dissipation fan (521), and the side surface of the heat conduction plate (522) is fixedly connected with a heat dissipation fin (523), wherein the heat dissipation fin (523) is located on the housing (1). The protective baffle (512) is bolted to the side surface of an air intake fan (526), ​​and the housing (1) is located on the inner wall of the installation cavity (511) and is bolted to an air collecting plate (527), the air collecting plate (527) is in contact with the side surface of the air intake fan (526), ​​the side surface of the air collecting plate (527) is fixedly connected to a guide tube (528), the surface of the air collecting plate (527) is provided with an air guide cavity, the guide tube (528) is connected to the inner wall of the air guide cavity, and the guide tube (528) is located on the inner wall of the housing (1).

2. The internal and external wind heat exchange device of an LCD projector according to claim 1, characterized in that: The inner wall of the shell (1) located in the installation cavity (511) is provided with an insertion hole (524), the inner wall of the shell (1) located in the installation cavity (511) is provided with an air vent (525), and the inner wall of the shell (1) located in the installation cavity (511) is provided with a through hole (529).

3. The internal and external air exchange heat exchange device of an LCD projector according to claim 1, characterized in that: The number of the fixing screws (513) is four, and the four fixing screws (513) are arranged diagonally with respect to the protective baffle (512).

4. The internal and external wind heat exchange device of an LCD projector according to claim 1, characterized in that: The ventilation hole (514) is in communication with the inner wall of the installation cavity (511), and the dustproof net (515) is in communication with the inner wall of the ventilation hole (514).

5. The internal and external wind heat exchange device of an LCD projector according to claim 1, characterized in that: The heat dissipation fan (521) is located on the inner wall of the installation cavity (511), the heat dissipation fan (521) is connected to the inner wall of the ventilation hole (514), and the heat dissipation fan (521) is connected to the inner wall of the air permeability hole (525).

6. The internal and external wind heat exchange device of an LCD projector according to claim 1, characterized in that: The heat dissipation fins (523) are plugged into the inner wall of the plug hole (524), there are a plurality of heat dissipation fins (523), and the plurality of heat dissipation fins (523) are arranged vertically with respect to the heat conducting plate (522).

7. The internal and external wind heat exchange device of an LCD projector according to claim 1, characterized in that: The air intake fan (526) is connected to the inner wall of the ventilation hole (514), the air intake fan (526) is connected to the inner wall of the air guide cavity, and the guide pipe (528) is plugged into the inner wall of the through hole (529).

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