CN204462592U - A kind of liquid crystal indicator and a kind of vehicle-mounted head-up display system - Google Patents

Abstract

The utility model discloses a kind of liquid crystal indicator, comprising: LCDs; Fit in the transparent cooling layer at the described LCDs back side; Be positioned at the backlight assembly at the described LCDs back side; Described transparent cooling layer is the cavity that inside is filled with transparent cooling fluid.The heat that the LCDs of described liquid crystal indicator produces can pass to transparent cooling layer, achieves the direct heat radiation to LCDs, improves radiating efficiency.The invention also discloses a kind of vehicle-mounted head-up display system comprising above-mentioned liquid crystal indicator.

Description

A liquid crystal display device and a vehicle head-up display system

technical field

The utility model relates to the technical field of displays, in particular to a liquid crystal display device and a vehicle head-up display system.

Background technique

Liquid crystal display equipment includes a liquid crystal display panel and a backlight assembly. The basic structure of a liquid crystal display panel is to place a liquid crystal layer between two parallel conductive substrates. The liquid crystal material itself does not emit light. By changing the applied voltage between the two substrates, the light passing through the liquid crystal The polarization state of the polarized light changes, so as to control whether the polarized light passes through the analyzer polarizer, and realize the change of brightness and darkness to display information. The backlight assembly is located at the back of the liquid crystal display panel and can provide uniform backlight for the display screen.

When the LCD device is in operation, the LCD screen and the backlight assembly will generate a lot of heat. For traditional liquid crystal display devices, heat sinks or cooling fans are installed on the backlight assembly to dissipate the generated heat in time to ensure the normal operation of the liquid crystal display device.

However, the liquid crystal display screen is continuously irradiated by high-intensity backlight, which will generate a large amount of heat to make its temperature very high, and the heat dissipation efficiency of the liquid crystal display screen is not high by the above heat dissipation method, and the liquid crystal display screen cannot achieve a good heat dissipation effect.

Utility model content

The utility model provides a liquid crystal display device, which can improve the cooling efficiency of the liquid crystal display screen. The utility model also provides a vehicle head-up display system.

A liquid crystal display device provided by the utility model comprises:

LCD;

A transparent cooling layer attached to the back of the liquid crystal display;

a backlight assembly located at the back of the liquid crystal display;

The transparent cooling layer is a cavity filled with transparent cooling fluid.

Optionally, the transparent cooling fluid is a transparent cooling liquid or a transparent cooling gas.

Optionally, the cavity is a transparent glass cavity.

Optionally, a conveying pipe and a circulating cooling device are also included, and the transparent cooling layer communicates with the circulating cooling device through the conveying pipe.

Optionally, the transparent cooling fluid is a transparent cooling gas;

The side or end of the cavity is provided with through holes.

Optionally, the backlight assembly is provided with a heat sink.

Optionally, the liquid crystal display includes a polarizer disposed on the incident side of the backlight of the liquid crystal display;

The transparent cooling layer is located on the side where the polarizer is bonded to the liquid crystal display.

A liquid crystal display device provided by the utility model includes a liquid crystal display and a backlight assembly located on the back of the liquid crystal display, and the backlight assembly provides uniform backlight for the liquid crystal display. A transparent cooling layer is pasted on the back of the liquid crystal display, and the transparent cooling layer is a cavity filled with a transparent cooling fluid. During the operation of the liquid crystal display device, the liquid crystal display will generate a large amount of heat. Since there is a temperature difference between the liquid crystal display and the transparent cooling layer, and the transparent cooling layer is in contact with the entire surface of the liquid crystal display, the heat generated by the liquid crystal display will be directly transferred Provide a transparent cooling layer, so that the heat of the liquid crystal display can be transferred and dissipated in time, thereby improving the heat dissipation efficiency of the liquid crystal display and making it have a good heat dissipation effect.

The utility model also provides a vehicle-mounted head-up display system, which includes the above-mentioned liquid crystal display device.

Description of drawings

Fig. 1 is a schematic structural diagram of a liquid crystal display device provided by an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a liquid crystal display device provided by another embodiment of the present invention.

Detailed ways

The utility model provides a liquid crystal display device, which can improve the cooling efficiency of the liquid crystal display screen. The utility model also provides a vehicle head-up display system.

In order to enable those skilled in the art to better understand the solution of the utility model, the utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Referring to Fig. 1, a liquid crystal display device provided by an embodiment of the present invention includes:

LCD display 10;

A transparent cooling layer 100 attached to the back of the liquid crystal display 10;

A backlight assembly 11 located at the back of the liquid crystal display 10;

The transparent cooling layer 100 is a cavity filled with a transparent cooling fluid.

The liquid crystal display device described in this embodiment includes a liquid crystal display 10 and a backlight assembly 11 located at the back of the liquid crystal display. The backlight assembly 11 provides uniform backlight for the liquid crystal display 10 . On the back of the liquid crystal display, a transparent cooling layer 100 is bonded, and the transparent cooling layer is transparent as a whole, so it will not affect the backlight generated by the backlight assembly to illuminate the liquid crystal display. The transparent cooling layer 100 is a cavity filled with a transparent cooling fluid, and is attached to the back of the liquid crystal display 10 . When the liquid crystal display device is in use, the liquid crystal display itself will generate a large amount of heat when it is irradiated by the bright backlight. Due to the temperature difference and the large-area contact between the liquid crystal display and the transparent cooling layer, the heat generated by the liquid crystal display 10 will be The heat is transmitted to the transparent cooling layer 100 so that the heat of the liquid crystal display can be transferred and dissipated in time to realize direct cooling of the liquid crystal display, thereby improving the heat dissipation efficiency of the liquid crystal display.

Moreover, the transparent cooling layer can directly dissipate heat from the liquid crystal display, so that the temperature of the liquid crystal display will not be too high when the liquid crystal display device is running, ensuring its display quality and service life. The heat dissipation method is simple and easy to realize, and has low cost.

In this embodiment, the transparent cooling layer 100 is a cavity filled with a transparent cooling fluid, which is attached to the back of the liquid crystal display 10 . The cavity can be a transparent glass cavity, or a transparent cavity made of other materials.

The transparent cooling fluid may be a transparent liquid, such as water, alcohol, etc. The liquid has a large specific heat capacity and can efficiently absorb heat generated by the liquid crystal display 10 . In the cavity, the liquid close to the liquid crystal display absorbs heat, the temperature rises, and the liquid part with a lower temperature in the cavity will form convection to exchange heat, so that the heat is transferred and dissipated outward, which has a cooling effect on the liquid crystal display.

In this embodiment, the transparent cooling fluid may also be a transparent gas. The transparent cooling gas located in the cavity, the part of the gas near the display absorbs heat and the temperature rises, and the volume expands as the temperature rises, and will diffuse to the gas part with lower temperature. The heat is transferred outward, so as to achieve the purpose of dissipating the heat of the display screen.

Another way of setting the transparent cooling layer is to set through holes on the side of the cavity or the end of the cavity, and the inside of the cavity is cooled air. When the cooling air in the cavity absorbs the heat generated by the liquid crystal display, the temperature rises and the volume expands, and then diffuses into the outside air through the through holes arranged on the side or end of the cavity, and at the same time brings the heat to the outside, so that The heat of the LCD screen is transferred to the outside world in a timely manner. In the above arrangement, the cavity of the transparent cooling layer communicates with the outside world, which can ensure that the heat is dissipated to the outside world in a timely manner, further improving the heat dissipation efficiency.

In this embodiment, the liquid crystal display screen includes two parallel conductive substrates and a liquid crystal layer arranged between the two conductive substrates, polarizers are respectively arranged on the outer sides of the two conductive substrates, and are arranged on the two conductive substrates. The polarizer on the incident side of the backlight of the liquid crystal display is a polarizer, and the transparent cooling layer 100 is arranged on the inner side of the polarizer, that is, the transparent cooling layer is located between the polarizer and the liquid crystal display. The combined side, that is, the transparent cooling layer is between the polarizer and the conductive substrate. When the liquid crystal display device is in operation, both the liquid crystal layer and the polarizer will generate more heat. The transparent cooling layer 100 is arranged between the polarizer and the conductive substrate, and both the liquid crystal layer and the polarizer can dissipate heat through the transparent cooling layer, which can achieve a higher Good cooling effect.

Referring to Fig. 2, a kind of liquid crystal display device provided by another embodiment of the present utility model, on the basis of the above embodiment, add delivery pipe 101 and circulating cooling device 102, specifically include: liquid crystal display screen 10, located in the liquid crystal The backlight assembly 11 on the back of the display screen, the transparent cooling layer 100 attached to the back of the liquid crystal display screen 10 , and also includes a delivery pipe 101 and a circulating cooling device 102 .

The transparent cooling layer 100 is a cavity filled with a transparent cooling fluid, and the transparent cooling layer communicates with the circulating cooling device 102 through the delivery pipe 101 .

The transparent cooling fluid in the cavity can be a transparent liquid or a transparent gas. The circulating cooling device 101 can drive the transparent cooling fluid to circulate among the transparent cooling layer 100, the delivery pipe 101 and the circulating cooling device 102, and can cool the fluid entering the circulating cooling device to lower its temperature.

The transparent cooling layer 100 is pasted on the back of the liquid crystal display 10. Due to the temperature difference, the heat generated by the liquid crystal display 10 will be transferred to the transparent cooling layer 100, and the temperature of the cooling fluid in the transparent cooling layer 100 absorbs heat and rises. The circulating cooling device 101 drives the internal fluid circulation, so that the fluid with increased temperature in the transparent cooling layer 100 flows into the circulating cooling device 102 through the delivery pipe 101, and is cooled in the circulating cooling device, and then enters the transparent cooling layer to absorb the liquid crystal display generated heat. Adopting such a circulation cooling heat dissipation method can effectively dissipate the heat generated by the liquid crystal display screen in time, effectively reduce the temperature of the liquid crystal display screen, and ensure the normal operation of the liquid crystal display device.

In this embodiment, the backlight assembly of the liquid crystal display device is further provided with a heat sink 12, and the heat sink 12 can directly dissipate heat to the backlight assembly, lower its temperature, and reduce its heat transfer to the liquid crystal display.

The embodiment of the utility model also provides a vehicle-mounted head-up display system, including a liquid crystal display and an optical imaging device. various information required. The liquid crystal display adopts the liquid crystal display device described above. When the vehicle-mounted display system is running, the heat of the liquid crystal display can be directly transferred to the transparent cooling layer attached to the back of the liquid crystal display, so that the temperature of the display screen will not be too high. Ensure the display quality of the LCD screen during operation and improve its service life.

A liquid crystal display device and a vehicle-mounted head-up display system provided by the utility model have been introduced in detail above. In this paper, specific examples are used to illustrate the principle and implementation of the present utility model, and the descriptions of the above embodiments are only used to help understand the method and core idea of the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made to the utility model, and these improvements and modifications also fall into the protection of the claims of the utility model. within range.

Claims (8)

1. A liquid crystal display device, characterized in that, comprising: LCD; A transparent cooling layer attached to the back of the liquid crystal display; a backlight assembly located at the back of the liquid crystal display; The transparent cooling layer is a cavity filled with transparent cooling fluid. 2. The liquid crystal display device according to claim 1, wherein the transparent cooling fluid is a transparent cooling liquid or a transparent cooling gas. 3. The liquid crystal display device according to claim 2, wherein the cavity is a transparent glass cavity. 4. The liquid crystal display device according to any one of claims 1-3, further comprising a conveying pipe and a circulating cooling device, the transparent cooling layer communicates with the circulating cooling device through the conveying pipe. 5. The liquid crystal display device according to claim 1, wherein the transparent cooling fluid is a transparent cooling gas; The side or end of the cavity is provided with through holes. 6. The liquid crystal display device according to claim 1, wherein the backlight assembly is provided with a heat sink. 7. The liquid crystal display device according to claim 1, wherein the liquid crystal display screen comprises a polarizer arranged on the incident side of the backlight of the liquid crystal display screen; The transparent cooling layer is located on the side where the polarizer is bonded to the liquid crystal display. 8. A vehicle-mounted head-up display system, characterized in that it comprises the liquid crystal display device described in any one of claims 1-7.