Liquid crystal temperature control structure

Abstract

The liquid crystal temperature control structure comprises an air channel, a wind power unit and an adjusting plate, the air channel is provided with a first end and a second end which communicate with each other, the first end is used for air entering, and the second end is used for outputting air to liquid crystal; the wind power unit is arranged at the first end; the adjusting plate is arranged between the first end and the second end, is in sliding connection with the air duct, and can slidably move along the cross section of the air duct to adjust the cross section area of air capable of passing through the air duct. The position of the adjusting plate can be correspondingly adjusted according to the liquid crystal temperature height, the air flow in the air channel is changed, when the liquid crystal temperature is high, the adjusting plate moves to the position away from the air channel, the air flow in the air channel is increased, and liquid crystal heat dissipation is accelerated; when the liquid crystal temperature is low, the adjusting plate moves towards the position close to the air channel, the air flow in the air channel is reduced, even the air channel is completely closed by the adjusting plate, no air in the air channel flows to the second end, the liquid crystal generates heat, and the temperature of the liquid crystal is gradually increased, so that the temperature of the liquid crystal is controlled.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of liquid crystal projectors, in particular to a liquid crystal temperature control structure. BACKGROUND

[0002] Liquid crystal (LCD for short) is one of important components in the optical system of a laser projector, and the role of the liquid crystal in the projector is to change the light transmittance and reflectivity by controlling the arrangement of liquid crystal molecules, so that images with different gray levels and colors are generated. The liquid crystal projector uses liquid crystal display technology, changes the arrangement of liquid crystal molecules by electric field, and then affects the light transmittance or reflectivity, and finally generates a color image.

[0003] With the development of the projection industry, more requirements for the diversity of the application scenarios of the projector are put forward, and the demand for normal use in a low-temperature environment is also increasing. When the liquid crystal is in a low-temperature environment, the response speed between the molecules of the liquid crystal will greatly decrease compared with the response speed at normal temperature due to the influence of low temperature. Affected by the decrease of the response speed, the projected image will become blurred, which greatly affects the image quality. According to the principle of the projector, the liquid crystal needs to be directly irradiated by a laser beam for a long time, at which time the temperature of the liquid crystal will rise sharply, and a fan is generally used to continuously cool the liquid crystal, so as to avoid damage of the liquid crystal due to high temperature.

[0004] Therefore, the temperature of the liquid crystal must be controlled within a certain range, so that the liquid crystal can normally work and output high-quality images. CONTENT OF THE INVENTION

[0005] The application aims to overcome the above technical deficiencies, and provides a liquid crystal temperature control structure to solve the problem that the temperature of the liquid crystal needs to be controlled within a certain range in the prior art.

[0006] To achieve the above technical purpose, the technical scheme of the application is as follows: a liquid crystal temperature control structure, comprising an air duct, an air force unit and an adjusting plate, wherein: the air duct has a first end and a second end in communication, the first end is used for air to enter, and the second end is used for air to output to the liquid crystal; the air force unit is arranged at the first end and is used for conveying air to the air duct; the adjusting plate is arranged between the first end and the second end, and the adjusting plate is in sliding connection with the air duct, and the adjusting plate is slidably moved along the cross section of the air duct to adjust the cross-sectional area of the air duct through which air can pass.

[0007] Preferably, the liquid crystal temperature control structure further comprises a driving assembly connected with the adjusting plate to drive the adjusting plate to move along the cross section of the air duct.

[0008] Preferably, the side of the adjusting plate is formed with a meshing rack part along the direction of the cross section of the air duct, and the driving assembly comprises a driving unit and a driving gear, the driving unit is connected with the driving gear to drive the driving gear to rotate, and the driving gear is connected with the meshing rack part in meshing mode.

[0009] Preferably, the driving unit is an electric motor.

[0010] Preferably, the air duct is provided with a sliding groove, and the adjusting plate is connected with the sliding groove in sliding mode.

[0011] Preferably, the air duct and the adjusting plate are provided in three groups respectively, each group of the air duct and the adjusting plate corresponds to one liquid crystal, and controls the temperature of the liquid crystal.

[0012] Preferably, the liquid crystal temperature control structure further comprises a connecting plate, and the connecting plate is fixedly connected with one side of the three air ducts.

[0013] Preferably, the liquid crystal temperature control structure further comprises a temperature sensor, and the temperature sensor is used to detect the temperature of the liquid crystal.

[0014] Preferably, the air force unit is a fan.

[0015] Compared with the prior art, the application has the following beneficial effects: the position of the adjusting plate can be adjusted according to the temperature of the liquid crystal, and the air flow in the air duct can be changed, when the temperature of the liquid crystal is high, the adjusting plate moves away from the air duct, so that the air flow in the air duct is increased, and the heat dissipation of the liquid crystal is accelerated; when the temperature of the liquid crystal is low, the adjusting plate moves close to the air duct, so that the air flow in the air duct is reduced, and even the adjusting plate completely closes the air duct, so that there is no air flow to the second end in the air duct, and the heat generated by the liquid crystal itself will gradually increase the temperature of the liquid crystal, so as to control the temperature of the liquid crystal. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a perspective view of the liquid crystal temperature control structure provided by the application;

[0017] Figure 2 is a perspective view of the air duct and the connecting plate of the liquid crystal temperature control structure provided by the application;

[0018] Figures: 1-liquid crystal, 2-air duct, 3-air force unit, 4-adjusting plate, 5-driving assembly, 6-connecting plate, 2a-sliding groove, 4a-meshing rack part, 5a-driving unit, 5b-driving gear. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not used to limit the present application.

[0020] Referring to Figure 1 The embodiment provides a liquid crystal temperature control structure, an air duct 2, an air unit 3 and an adjusting plate 4. The air duct 2 is used as an air inlet and outlet channel. The air unit 3 is used for delivering air to the air duct 2. The adjusting plate 4 is used for adjusting the air flow in the air duct 2.

[0021] The air duct 2 has a first end and a second end which are communicated. The first end is used for air inlet. The second end is used for air outlet to the liquid crystal 1. Therefore, the second end is opposite to the liquid crystal 1.

[0022] The air unit 3 is arranged at the first end and used for delivering air to the air duct 2. Preferably, the air unit 3 is a fan. The fan is powered to rotate to generate air force and deliver air to the first end.

[0023] The adjusting plate 4 is arranged between the first end and the second end. The adjusting plate 4 is slidably connected with the air duct 2. The adjusting plate 4 is slidably moved along the cross section of the air duct 2 to adjust the cross sectional area of the air duct 2 through which air can pass. Specifically, a sliding groove 2a is formed in the side of the air duct 2. The adjusting plate 4 is slidably connected with the sliding groove 2a. In order to improve the stability of the connection between the adjusting plate 4 and the air duct 2, the sliding groove 2a is generally deep. The sliding groove 2a can extend from one side of the air duct 2 to the other side instead of being formed on only one side. In the embodiment, the cross section of the air duct 2 is rectangular. Therefore, the sliding groove 2a can be formed on three sides. One side is fully penetrated. The other two sides are not penetrated. That is, the sliding groove 2a is in the shape of "U". In addition, the sliding groove 2a is not suitable to be penetrated on the fourth side to prevent air leakage in the air duct 2. The position of the adjusting plate 4 can be adjusted according to the temperature of the liquid crystal 1 to change the air flow in the air duct 2. When the temperature of the liquid crystal 1 is high, the adjusting plate 4 is moved to a position away from the air duct 2 to increase the air flow in the air duct 2 to accelerate the heat dissipation of the liquid crystal 1. When the temperature of the liquid crystal 1 is low, the adjusting plate 4 is moved to a position close to the air duct 2 to reduce the air flow in the air duct 2. Even the adjusting plate 4 completely closes the air duct 2 to make no air flow to the second end in the air duct 2. The liquid crystal 1 itself generates heat to gradually increase the temperature of the liquid crystal 1 to control the temperature of the liquid crystal 1.

[0024] Preferably, the liquid crystal temperature control structure further comprises a driving assembly 5 connected with the adjusting plate 4 to drive the adjusting plate 4 to move along the cross section of the air duct 2. Further preferably, the side of the adjusting plate 4 is formed with a meshing rack portion 4a along the cross section of the air duct 2, the driving assembly 5 comprises a driving unit 5a and a driving gear 5b, the driving unit 5a is connected with the driving gear 5b to drive the driving gear 5b to rotate, the driving gear 5b is connected with the meshing rack portion 4a in a meshing manner, when the driving gear 5b rotates, the meshing rack portion 4a connected with the driving gear 5b in a meshing manner is driven to move, and the adjusting plate 4 is further driven to move along the sliding groove 2a. Preferably, in the embodiment, the driving unit 5a is a motor, the motor is used to drive the driving gear 5b to rotate, and the installation and maintenance are convenient.

[0025] Preferably, there are three liquid crystals 1 in the projector, and the air duct 2 and the adjusting plate 4 are provided in three sets, each set of the air duct 2 and the adjusting plate 4 corresponds to one liquid crystal 1 to control the temperature of the liquid crystal 1.

[0026] Please refer to Figure 1 and Figure 2 Preferably, the liquid crystal temperature control structure further comprises a connecting plate 6 fixedly connected with one side of the three air ducts 2, the connecting plate 6 is used to connect the three air ducts 2 to facilitate the installation, and the connecting plate 6 and the air duct 2 can be fixedly connected in a welding, riveting, bolt connection or other connection manner.

[0027] Further preferably, the liquid crystal temperature control structure further comprises a temperature sensor used to detect the temperature of the liquid crystal 1, the temperature sensor can be integrated in the liquid crystal 1 or installed on the liquid crystal 1, when the temperature of the liquid crystal 1 is detected to rise, the adjusting plate 4 is moved away from the air duct 2 to increase the air flow in the air duct 2, and when the temperature of the liquid crystal 1 is detected to drop, the adjusting plate 4 is moved to be close to the air duct 2 to reduce the air flow in the air duct 2, the related control components and control logic are relatively simple, and the prior art can be used.

[0028] In summary, the liquid crystal temperature control structure provided by the application can correspondingly adjust the position of the adjusting plate 4 according to the temperature of the liquid crystal 1 to change the air flow in the air duct 2, when the temperature of the liquid crystal 1 is high, the adjusting plate 4 is moved away from the air duct 2 to increase the air flow in the air duct 2 to accelerate the heat dissipation of the liquid crystal 1, when the temperature of the liquid crystal 1 is low, the adjusting plate 4 is moved to be close to the air duct 2 to reduce the air flow in the air duct 2, and even the adjusting plate 4 completely closes the air duct 2 to make no air flow to the second end in the air duct 2, and the heat generated by the liquid crystal 1 itself will gradually increase the temperature of the liquid crystal 1 to control the temperature of the liquid crystal 1.

[0029] The specific embodiments of the application do not constitute a limitation on the protection scope of the application. Any other corresponding changes and modifications made according to the technical concept of the application should be included in the protection scope of the claims of the application.

Claims

1. A liquid crystal temperature control structure for adjusting the temperature of liquid crystal, characterized in that, include: The components include: air ducts, wind turbine units, and regulating panels. The air duct has a first end and a second end that are connected. The first end is used for air to enter, and the second end is used for air to be output to the liquid crystal. The wind power unit is located at the first end and is used to supply air to the air duct; The adjusting plate is disposed between the first end and the second end, and the adjusting plate is slidably connected to the air duct. The adjusting plate can be slidably moved along the cross-section of the air duct to adjust the cross-sectional area through which air can pass.

2. The liquid crystal temperature control structure according to claim 1, characterized in that, The liquid crystal temperature control structure also includes a driving component, which is connected to the adjustment plate to drive the adjustment plate to move along the cross-section of the air duct.

3. The liquid crystal temperature control structure according to claim 2, characterized in that, The side of the adjusting plate forms a meshing rack portion along the cross-sectional direction of the air duct. The driving assembly includes a driving unit and a driving gear. The driving unit is connected to the driving gear to drive the driving gear to rotate. The driving gear meshes with the meshing rack portion.

4. The liquid crystal temperature control structure according to claim 3, characterized in that, The drive unit is a motor.

5. The liquid crystal temperature control structure according to claim 1, characterized in that, A sliding groove is provided on the side of the air duct, and the adjusting plate is slidably connected to the sliding groove.

6. The liquid crystal temperature control structure according to claim 1, characterized in that, The air duct and the regulating plate are each set to three, and each set of the air duct and the regulating plate corresponds to one liquid crystal, and controls the temperature of multiple liquid crystals respectively.

7. The liquid crystal temperature control structure according to claim 1, characterized in that, The liquid crystal temperature control structure also includes a connecting plate, which is fixedly connected to one side of the three air ducts.

8. The liquid crystal temperature control structure according to claim 1, characterized in that, The liquid crystal temperature control structure also includes a temperature sensor, which is used to detect the temperature of the liquid crystal.

9. The liquid crystal temperature control structure according to claim 1, characterized in that, The wind power unit is a fan.

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