Heat dissipation structure of single-chip liquid crystal display (LCD) projector

Abstract

The heat dissipation structure comprises an optical assembly, the optical assembly comprises a front Fresnel lens, a liquid crystal layer, a rear Fresnel lens, a light cup and a light source which are sequentially arranged from top to bottom, the heat dissipation structure further comprises a light source heat dissipation assembly, a heat dissipation fan and an exhaust fan, and the light source heat dissipation assembly comprises cooling fins and a heat conduction pipe. Heat generated by the light source is conducted to the cooling fins through the heat conduction pipe for heat dissipation, and the cooling fins are connected with the air suction opening side of the exhaust fan. Air blown out by the cooling fan is guided by the air guide plate to flow through the surface of the optical assembly, the air absorbing heat is sucked into the cooling fins through the exhaust fan, and then the heat conducted to the cooling fins by the light source is exhausted through the exhaust fan at the same time. And through the arrangement of blowing and exhausting of the cooling fan and the exhaust fan, the flow rate of gas flowing through the optical assembly is increased, and efficient operation of the cooling system is ensured.

Description

Technical Field

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

[0002] Single-chip LCD projectors use the photoelectric effect of liquid crystal molecules to form images. By precisely controlling the transmittance or reflectivity of liquid crystal units, single-chip LCD projectors can generate clear and vivid images, bringing users an excellent visual experience.

[0003] However, traditional single-chip LCD projectors often use a single fan for heat dissipation. This setting structure is often limited by the heat dissipation area and fan speed, resulting in low heat dissipation efficiency. When used for a long time in a high temperature environment, heat is easily accumulated inside the projector, which not only affects the projection effect, but may also have an adverse effect on the stability and life of the equipment. Summary of the invention

[0004] In view of this, the present application provides a heat dissipation structure of a single-chip LCD projector, which accelerates the gas flow rate through the optical component by setting a heat dissipation fan and an exhaust fan to blow one row at a time, and specifically adopts the following technical solutions:

[0005] The heat dissipation structure of a single-chip LCD projector includes an optical component, wherein the optical component includes a front mirror, a liquid crystal layer, a rear mirror, an optical cup and a light source arranged in sequence from top to bottom, and also includes a light source heat dissipation component, a heat dissipation fan and an exhaust fan. The light source heat dissipation component includes a heat sink and a heat pipe. The heat generated by the light source is transferred to the heat sink through the heat pipe for heat dissipation. The heat sink is connected to the air intake side of the exhaust fan. The gas blown out by the heat dissipation fan is guided by an air guide plate to flow through the surface of the optical component. The gas that absorbs heat is sucked into the heat sink by the exhaust fan, and then the heat transferred from the light source to the heat sink is discharged by the exhaust fan at the same time.

[0006] Preferably, an air guide is provided between the optical component and the heat sink, for guiding the gas flow and distributing the heat dissipation spacing between the parts in the optical component.

[0007] Further preferably, the spacing inside the air guide plate is determined by the heat generated by each component in the optical component.

[0008] Preferably, the heat dissipation fan, the optical component and the exhaust fan are arranged in sequence along the same straight line direction.

[0009] Preferably, a lens, a reflector and a sound box are provided above the heat dissipation fan, the optical assembly and the exhaust fan in sequence.

[0010] Preferably, the suction port of the heat dissipation fan is provided with a dustproof net.

[0011] Beneficial effects of this application:

[0012] (1) The cooling fan and the exhaust fan are set up in a one-way arrangement to speed up the flow of gas through the optical components. The exhaust fan can handle heat from two different sources at the same time, ensuring the efficient operation of the cooling system. This not only helps to extend the service life of the projector, but also improves its working stability and performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the heat dissipation structure of the prior art;

[0014] Figure 2 is a schematic diagram of the heat dissipation structure described in this application;

[0015] Figure 3 is a schematic diagram of the gas flow described in this application;

[0016] Figure 4 It is a schematic diagram of the air guide plate described in this application.

[0017] In the figure: 1. optical component, 1a. existing optical component, 2. cooling fan, 2a. existing cooling fan, 3. exhaust fan, 4. heat sink, 4a. existing heat sink, 5. heat pipe, 6. lens, 7. reflector, 8. speaker, 9. dust screen, 10. air guide. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described in the present application are only some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0019] Combination Figure 2 to Figure 4 , the heat dissipation structure of the single-chip LCD projector described in the present application is further described, including an optical component 1, the optical component 1 includes a front mirror, a liquid crystal layer, a rear mirror, an optical cup and a light source arranged in sequence from top to bottom, and also includes a light source heat dissipation component, a heat dissipation fan 2 and an exhaust fan 3, the light source heat dissipation component includes a heat sink 4 and a heat pipe 5, the heat generated by the light source is conducted to the heat sink 4 through the heat pipe 5 for heat dissipation, and the heat sink 4 is connected to the air intake side of the exhaust fan 3; the gas blown out by the heat dissipation fan 2 is guided by the air guide plate to flow through the surface of the optical component 1, and the gas absorbing heat is sucked into the heat sink 4 by the exhaust fan 3, and then the heat conducted to the heat sink 4 by the light source is simultaneously discharged by the exhaust fan 3.

[0020] In the prior art, Figure 1As shown, the heat dissipation fan 2a inhales external air to flow through the surface of the optical component 1a, and the air that absorbs heat is then discharged by the heat dissipation fan 2a and dissipates heat to cool the heat sink 4a of the light source. However, when the heat-absorbing air flows through the heat sink 4a, the amount of heat that can be absorbed again is limited, and there is a risk of heat being absorbed by the heat sink 4a, resulting in difficulty in heat dissipation of the light source; at the same time, the air inhaled by the heat dissipation fan 2a cannot be guaranteed to flow entirely through the surface of the optical component 1a, affecting the actual heat dissipation efficiency.

[0021] Combination Figure 2 and Figure 3 In the present application, an additional exhaust fan 3 is provided, which not only discharges the heat conducted from the light source to the heat sink 4, but also discharges the gas blown by the heat dissipation fan 2 to take away the heat generated by the optical component 1; through the above-mentioned one-blow-one-row setting, the flow rate of the gas flowing through the optical component 1 is accelerated, so that more heat can be taken away, which not only helps to maintain the normal working temperature of the optical component 1 and prevent performance degradation or damage due to overheating, but also ensures the stable operation of the entire system; the exhaust fan 3 processes heat from two different sources at the same time, further improving the heat dissipation efficiency.

[0022] In this embodiment, if Figure 4 An air guide 10 is provided between the optical component 1 and the heat sink 4, which is used to guide the flow of gas that takes away the heat of the optical component 1 and distribute the heat dissipation distance between the parts in the optical component 1. The heat dissipation distance, that is, the distance inside the air guide 10, is determined by the heat generation of the parts in the optical component 1 to improve the heat dissipation efficiency of the high-heat-generating parts in the optical component 1.

[0023] To facilitate the layout of the projector's internal components, the cooling fan 2, the optical component 1 and the exhaust fan 3 are arranged in the same straight line direction, so that the gas blown out by the cooling fan 2 can directly flow through the optical component 1 and then be exhausted by the exhaust fan 3.

[0024] In this embodiment, a lens 6, a reflector 7 and a sound box 8 are sequentially arranged above the cooling fan 2, the optical assembly 1 and the exhaust fan 3. This arrangement structure is simple and does not interfere with each other, so as to ensure the heat dissipation efficiency of the projector.

[0025] In this embodiment, the suction port of the cooling fan 2 is provided with a dustproof net 9 to block dust and particulate matter in the external environment, ensuring that the cooling fan 2 does not bring these impurities into the projector when inhaling air, thereby ensuring the stability of internal heat dissipation while ensuring the projection viewing experience.

Claims

1. A heat dissipation structure of a single-chip LCD projector, comprising an optical assembly, wherein the optical assembly comprises a front mirror, a liquid crystal layer, a rear mirror, an optical cup and a light source arranged in sequence from top to bottom, characterized in that: It also includes a light source heat dissipation component, a heat dissipation fan and an exhaust fan. The light source heat dissipation component includes a heat sink and a heat pipe. The heat generated by the light source is transferred to the heat sink via the heat pipe for heat dissipation. The heat sink is connected to the air intake side of the exhaust fan. The gas blown out by the heat dissipation fan is guided by an air guide plate to flow through the surface of the optical component. The gas that absorbs heat is sucked into the heat sink by the exhaust fan, and the heat transferred from the light source to the heat sink is simultaneously discharged by the exhaust fan.

2. The heat dissipation structure of a single-chip LCD projector according to claim 1, characterized in that: An air guide is provided between the optical component and the heat sink, for guiding the flow of gas and distributing the heat dissipation spacing between the parts in the optical component.

3. The heat dissipation structure of a single-chip LCD projector according to claim 2, characterized in that: The spacing inside the air guide plate is determined by the heat generated by each component in the optical component.

4. The heat dissipation structure of a single-chip LCD projector according to claim 1, characterized in that: The heat dissipation fan, the optical component and the exhaust fan are arranged in sequence along the same straight line direction.

5. The heat dissipation structure of a single-chip LCD projector according to claim 1, characterized in that: A lens, a reflector and a sound box are arranged in sequence above the heat dissipation fan, the optical component and the exhaust fan.

6. The heat dissipation structure of a single-chip LCD projector according to claim 1, characterized in that: The suction port of the heat dissipation fan is provided with a dustproof net.

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