Temperature control device and projection equipment

Abstract

The utility model discloses a temperature control device, which is used for controlling the internal temperature of projection equipment, and comprises a shell, a cold and heat exchange device, an air inducing assembly and a temperature control module which are arranged in the shell, and a temperature sensor arranged in the projection equipment, the shell is provided with an air inlet and an air outlet which are respectively connected with the air duct I and the air duct II; the two end faces of the cold and heat exchange device are correspondingly arranged in the first air duct and the second air duct correspondingly, the air inducing assembly is arranged in the first air duct and used for conveying air in the first air duct into projection equipment, and the temperature control module is used for controlling the temperature of the projection equipment according to the temperature fed back by the temperature sensor. The cold and heat exchange device is controlled to heat or cool air in the first air duct; the air inducing assembly conveys air in the first air channel to the interior of the projector, so that a liquid crystal display in the projector works in the optimal working temperature environment, and the image projection effect of the projector is improved.

Description

Technical Field

[0001] The present application relates to the technical field of projection equipment, and in particular to a temperature control device and projection equipment. Background Art

[0002] Projectors are used in a wide range of fields and in different regions. Therefore, they are required to work stably in different environments (such as high temperature or extreme cold). Liquid crystal displays (LCDs) are the core components of projectors and play a role in forming and displaying images. The optimal working temperature of LCDs is generally between 5 and 40 degrees. Existing projection equipment only has a cooling function. When in a low temperature environment, it is impossible to adjust the temperature in the projector according to the working environment to keep the LCD at a suitable temperature, which will make it difficult to start the projector and reduce the projection performance, affecting the image display effect. Utility Model Content

[0003] The present application provides a temperature control device and a projection device to solve the problem that the above-mentioned projector cannot be used in extreme environments, the projection performance is reduced, and the projection effect is affected. The following technical solutions are adopted:

[0004] A temperature control device for controlling the internal temperature of a projection device, characterized in that it comprises a shell, a heat exchange device, an air induced draft component and a temperature control module arranged in the shell, and a temperature sensor arranged in the projection device, the shell is provided with a mutually independent air duct one and air duct two, the shell is provided with an air inlet and an air outlet respectively connected to the air duct one and the air duct two; the two end surfaces of the heat exchange device are respectively correspondingly arranged in the air duct one and the air duct two, the air induced draft component is arranged in the air duct one, and is used to transport the air in the air duct one to the projection device, and the temperature control module is used to control the heat exchange device to heat or cool the air in the air duct one according to the temperature feedback from the temperature sensor.

[0005] Preferably, an exhaust component is further provided in the housing, and the exhaust component is provided in the second air duct for conveying the air in the second air duct out of the second air duct.

[0006] Preferably, a heat dissipation component is further included, and the heat dissipation component includes a first heat sink and a second heat sink, and the first heat sink and the second heat sink are respectively arranged on the first end surface and the second end surface.

[0007] Further preferably, the temperature control module is electrically connected to the air induction component, the air exhaust component, the temperature sensor and the heat exchange device.

[0008] Further preferably, the air induction component and the air exhaust component are both arranged at corresponding air exhaust ports, and the air induction component is arranged opposite to the first end surface.

[0009] Preferably, it also includes a dustproof component, which is detachably arranged at the air inlet.

[0010] A projection device is also provided in an embodiment of the present application, including the temperature control device, a shell and a projector body described in the present application, the projector body is arranged in the shell, the temperature control device is detachably arranged on one side of the shell, and the exhaust port of the air duct one corresponds to the air inlet of the projection device.

[0011] The beneficial effects of this application are:

[0012] (1) The temperature control device receives the temperature feedback from the temperature sensor through the temperature control module, and heats or cools the inside of the device according to the detected internal temperature of the projection device, so that the LCD display in the projection device can be maintained in the best temperature working environment, thereby improving the projector effect and quality in extreme environments, as well as the service life, and reducing the number of maintenance times.

[0013] (2) The temperature control device is divided into independent air duct one and air duct two. When the cold and hot exchange device is working, the end surfaces of the air duct one and the air duct two do not interfere with each other, so that the interior of the projection device can quickly reach the optimal temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional schematic diagram of the projection device of the present application;

[0015] Figure 2 It is a three-dimensional cross-sectional view of the temperature control device of the present application;

[0016] Figure 3 This application Figure 2 Top view of the central temperature control device;

[0017] Figure 4 It is a simplified structural diagram of the temperature control device of this application.

[0018] In the figure: 1. temperature control device, 2. projection equipment, 3. temperature sensor, 4. heat exchange device, 10. housing, 11. air duct 1, 12. air duct 2, 13. temperature control module, 14. air induced draft assembly, 15. exhaust assembly, 16A. radiator 1, 16B. radiator 2, 17A. air inlet 1, 17B. air inlet 2, 18A. exhaust outlet 1, 18B. exhaust outlet 2, 19. dustproof assembly. DETAILED DESCRIPTION

[0019] 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.

[0020] See also Figures 2 to 4 The present application discloses a temperature control device for controlling and adjusting the internal temperature of a projection device 2, which can be applicable to projection devices such as a projector or a projection television.

[0021] Combination Figure 2 As shown, the temperature control device 1 includes a shell 10, a heat exchange device 4, an air induced draft component 14 and a temperature control module 13 arranged in the shell 10, and a temperature sensor 3 arranged in the projection device 2, wherein the heat exchange device 4 is a semiconductor refrigeration plate; the shell 10 is provided with a mutually independent air duct 11 and an air duct 2 12, and the shell 10 is provided with an air inlet and an air outlet respectively connected to the air duct 1 11 and the air duct 2 12; the two end surfaces of the heat exchange device 4 are respectively correspondingly arranged in the air duct 1 11 and the air duct 2 12, the air induced draft component 14 is arranged in the air duct 1 11, and is used to transport the air in the air duct 1 11 to the projection device 2, and the temperature control module 13 is used to control the heat exchange device 4 to heat or cool the air in the air duct 1 11 according to the temperature feedback from the temperature sensor 3.

[0022] At present, the projection device 2 can only cool down its internal core components, and in a low temperature environment, the projection device 2 will have problems such as difficulty in starting, abnormal projection display or unclear image; the present application sets two independent air ducts in the outer shell 10 in combination with the characteristics of the semiconductor refrigeration plate itself. After the current is turned on, one end face is the hot side and the other end face is the cold side. When the direction of the current is changed, the hot side and the cold side are also exchanged accordingly. The temperature control module 13 detects the temperature according to the temperature sensor 3, adjusts the heating or cooling of the two end faces of the semiconductor refrigeration plate, and can make the liquid crystal display inside the projection device 2 at the optimal working temperature under different environments.

[0023] Combination Figure 2 and Figure 3In order to increase the heating or cooling speed inside the projection device 2 and make the projection device 2 quickly reach the optimal working temperature; the shell 10 also includes a heat dissipation component, wherein the heat dissipation component includes a heat sink 16A and a heat sink 16B, and the heat sink 16A and the heat sink 16B are respectively arranged on the end surface 1 and the end surface 2, and are used to transfer the temperature on the end surface 1 and the end surface 2 to the heat sink 16A and the heat sink 16B, increase the contact area with the flowing air in the air duct 1 11 and the air duct 2 12, and quickly diffuse the temperature into the air in the air duct 1 11 and the air duct 2 12.

[0024] The air inlet may include an air inlet 17A connected to the air duct 11 and an air inlet 2 17B connected to the air duct 2 12; in some embodiments, the air duct 11 and the air duct 2 12 may use the same air inlet; the air outlet includes an exhaust outlet 18A and an exhaust outlet 18B, the exhaust outlet 18A is connected to the air duct 11, and the exhaust outlet 2 18B is connected to the air duct 2 12; the air inlet assembly 14 introduces external air into the air duct 11, heats or cools it through the radiator 16A, and then transports it into the projection device 2 from the air outlet 18A; specifically, the air inlet assembly 14 is arranged at the air outlet 18A and is opposite to the end face 1, so that the air passing through the surface of the end face 1 can be quickly drawn out from the air outlet 18A, so that the temperature in the projection device can be quickly heated or cooled to reach the optimal suitable working temperature.

[0025] An exhaust component 15 is also provided in the housing 10. The exhaust component 15 is provided in the air duct 12 and is used to introduce external air into the air duct 12 to speed up the air flow rate in the air duct 12. Specifically, the exhaust component 15 is provided at the corresponding exhaust port to facilitate the exhaust of the air in the air duct 12. When the end surface 2 is in a heating state, the air passes through the radiator 16B and discharges the heat on the end surface 2 from the exhaust port 18B, thereby improving the conversion efficiency of the heat exchange device 4.

[0026] Combination Figure 2 A dustproof component 19 is also provided at the air inlet to prevent impurities or flying insects from entering the external air. The dustproof component 19 can be provided at both the air inlet 17A and the air inlet 2 17B. In this embodiment, the dustproof component 19 is provided at the air inlet 17A to prevent impurities in the external air from entering the interior of the projection device 2 through the air duct 11.

[0027] The temperature control module 13 is electrically connected to the air induction component 14, the exhaust component 15, the temperature sensor 3 and the heat exchange device 4; Figure 4The temperature control module 13 controls the end face to heat or cool the air in the air duct 11 according to the temperature feedback from the temperature sensor 3, and the air induced component 14 sends the heated or cooled air in the air duct 11 into the projection device; wherein, the temperature control module 13 can be a single-chip microcomputer or a control chip, and the temperature control module 13 has a built-in temperature / fan speed matching curve. According to the temperature detected by the temperature sensor 3, the fan speed corresponding to the detected temperature is matched. The temperature control module 13 controls the speeds of the air induced component 14 and the exhaust component 15 to ensure the air supply speed of the air induced component 14 and the exhaust speed of the exhaust component 15, avoid the fan being in a high speed state all the time, and can effectively reduce noise. The temperature / fan speed matching curve is a prior art.

[0028] Combination Figure 1 and Figure 2 The present embodiment further discloses a projection device 2, the projection device 2 comprises the above-mentioned temperature control device 1, a projector body and a shell, the projector body is arranged inside the shell, the temperature control device 1 is detachably arranged on one side of the projector, and in the present embodiment, it can be detachably connected by fasteners; specifically, the air inlet on one side of the projector is correspondingly connected to the exhaust port 18A, wherein the projector body comprises an optical machine, a light source part and a projection lens, etc., and the optical machine is provided with a spectroscope, a reflector, an LCD panel (liquid crystal display), etc.; the air in the air duct 11 is heated or cooled through the radiator 16A, and then enters the projector through the exhaust port 18A, thereby controlling the internal temperature of the projector, so that the core components inside the projector (such as: liquid crystal display panel) reach the optimal working temperature, ensuring that the projector can heat the inside of the shell in a low temperature environment so that the projector can start normally and improve the projection effect, and can cool the inside of the shell in a high temperature environment to improve the projected picture and projection effect of the projector, and extend the service life of the core components.

Claims

1. A temperature control device for controlling the internal temperature of a projection device, characterized in that: It includes a shell, a heat exchange device, an air induced component and a temperature control module arranged in the shell, and a temperature sensor arranged in the projection device. The shell is provided with a mutually independent air duct one and air duct two, and the shell is provided with an air inlet and an air outlet respectively connected to the air duct one and the air duct two; the two end surfaces of the heat exchange device are respectively correspondingly arranged in the air duct one and the air duct two, the air induced component is arranged in the air duct one, and is used to transport the air in the air duct one to the projection device, and the temperature control module is used to control the heat exchange device to heat or cool the air in the air duct one according to the temperature feedback from the temperature sensor.

2. The temperature control device according to claim 1, characterized in that: An exhaust component is also provided in the shell, and the exhaust component is arranged in the second air duct and is used to transport the air in the second air duct out of the second air duct.

3. The temperature control device according to claim 2, characterized in that: It also includes a heat dissipation component, which includes a first heat sink and a second heat sink, and the first heat sink and the second heat sink are respectively arranged on the first end surface and the second end surface.

4. The temperature control device according to claim 2, characterized in that: The temperature control module is electrically connected to the air induction component, the air exhaust component, the temperature sensor and the cold and heat exchange device.

5. The temperature control device according to claim 3, characterized in that: The air induction component and the air exhaust component are both arranged at corresponding air exhaust ports, and the air induction component is arranged opposite to the first end surface.

6. The temperature control device according to claim 1, characterized in that: It also includes a dustproof component, which is detachably arranged at the air inlet.

7. A projection device, characterized in that: It comprises the temperature control device, a shell and a projector body as described in any one of claims 1 to 6, wherein the projector body is arranged in the shell, the temperature control device is detachably arranged on one side of the shell, and the exhaust port of the air duct 1 corresponds to the air inlet of the projection device.

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