CN202496007U - Liquid crystal touch television - Google Patents

Abstract

The utility model discloses a liquid crystal touch television, which comprises a TV set and an infrared touch screen assembly arranged in front a television screen. The infrared touch screen assembly comprises an outer frame, and an infrared touch screen circuit board assembly and a light transmission plate which are arranged in the cavity of the outer frame. The outer frame is composed of four flat section bars and four connecting blocks, wherein the head end of each flat section bar is connected and fixed with the tail end of another flat section bar via a connecting block. Each flat section bar is composed a surface casing and a bottom casing, wherein a light transmission plate groove is arranged on the inner side of the surface casing and the inner side of the bottom casing oppositely. The light transmission plate is arranged in the light transmission plate groove which is between the surface casing and the bottom casing. The liquid crystal touch television provided in the utility model assists in installing and debugging an infrared touch screen, and in overhauling and maintaining when the touch screen is detected to be abnormal; and no slits exist between the light transmission plate and a toughened glass or the outer frame so that the sealing is good, thereby reaching explosion-proof, water-proof, and dust-proof requirements.

Description

LCD touch TV

technical field

The utility model relates to the field of electronic technology, in particular to a liquid crystal touch TV.

Background technique

The Chinese patent application number is: "00250806.0", and the patent name is: "An Integrated Infrared Touch Display". In the application document, an integrated infrared touch display is disclosed. In the space between the edges of the screen, an infrared touch screen is installed around the display screen. Between the inner frame of the mask frame and the display surface of the display screen, there is also a gap through which infrared rays can pass; this gap can be filled with a material transparent to infrared rays. Although such a structure can solve the problem that the infrared touch screen can only be installed on the casing of the display, it can also solve the problem of visual errors, but the gap between the inner frame of the mask frame and the display surface of the display screen has largely damaged the display screen. The appearance of the mask makes it easy for people to have the illusion that the mask frame is separated from the display, and water, dust and other sundries will enter the display. If the infrared light-transmitting material is filled in the gap, it will be inconvenient to install, time-consuming, poorly sealed, not firmly connected with the display screen or mask frame, easy to loosen and fall off, and impurities such as water and dust can also seep through the gap. and other shortcomings.

In recent years, with the maturity of large-size infrared touch screen and large-size LCD TV technology, some powerful manufacturers have combined infrared touch screen and LCD TV together. The specific combination method is to directly paste the infrared touch screen circuit board on the LCD TV. Around the surface of the screen, and on the front of the circuit board, a light-transmitting strip that can pass through infrared light is pasted, so that an infrared touch detection area can be formed in front of the display screen, which can be used to capture the touch target after being connected to the computer. It becomes an LCD touch TV, so it is widely used in all walks of life. This LCD touch TV brings convenience and visual enjoyment to users; it also causes a lot of trouble, because the circuit board is directly glued to the LCD Surrounding the surface of the TV screen, although its structure is simple, easy to produce and process, and the cost is relatively low, such a structure brings great inconvenience to the installation and debugging of the entire infrared touch screen circuit board. It will be difficult to remove for inspection and maintenance. If there is a serious problem with the touch screen and needs to be returned to the factory for repair, the entire TV can only be shipped back to the factory. In addition, because the infrared touch screen circuit board components directly contact the surface of the LCD screen, their respective components will Factors such as the temperature of the device will affect their normal work and their service life, which will increase the user's use cost virtually. The connection between the light-transmitting strip and the surface of the LCD TV screen is not close enough, and gaps are likely to directly affect the Its waterproof and dustproof function is not to mention explosion-proof, so it is necessary to improve the infrared touch screen and installation method of the existing LCD TV, so that it is easy to install, debug, overhaul and maintain, and can achieve explosion-proof, waterproof, Dustproof purpose.

Utility model content

Aiming at the deficiencies in the above-mentioned technologies, the utility model provides a liquid crystal touch TV, which is not only easy to install and debug, but also convenient to overhaul and maintain, and can achieve the purposes of explosion-proof, waterproof and dustproof.

In order to achieve the above object, the utility model provides a liquid crystal touch TV, which includes a TV and an infrared touch screen assembly installed in front of the TV screen. The infrared touch screen assembly includes an outer frame, an infrared touch screen circuit board assembly and a transparent Light sheet, the outer frame is composed of four flat profiles fixed by four connecting blocks. The flat profiles are respectively composed of a surface shell and a bottom shell, and a light-transmitting film groove is relatively opened on the inner side of the surface shell and the bottom shell. , the light-transmitting sheet is placed in the light-transmitting sheet groove between the face shell and the bottom shell.

Wherein, the TV is an LCD TV or a plasma TV.

Wherein, a glass groove for placing tempered glass is provided on the inner end surface of the bottom case.

Wherein, the infrared touch screen assembly is fixedly connected to the TV through a connecting piece by screws, and the infrared touch screen assembly is outside the front shell of the TV.

Wherein, the infrared touch screen assembly is fixedly connected with the TV through a connecting piece by screws, and the infrared touch screen assembly is inside the front shell of the TV.

Wherein, the inner surface of the bottom shell of the infrared touch screen assembly is provided with a slot for placing the infrared touch screen circuit board assembly, and the infrared touch screen circuit board assembly is fixed in the slot by screws or rivets.

Wherein, on the surface of the connecting block of the infrared touch screen assembly, there is a cable channel through which the cables connected to the infrared touch screen circuit board components pass.

The beneficial effects of the utility model are: compared with the prior art, the LCD touch TV provided by the utility model is not only convenient for the installation and debugging of the infrared touch screen, but also facilitates the repair and maintenance when the touch screen detects abnormalities. There is no gap between the toughened glass and the outer frame; it meets the requirements of explosion-proof, waterproof and dustproof.

Description of drawings

Figure 1 is a schematic diagram of the explosion structure of the infrared touch screen assembly of the utility model

Fig. 2 is a three-dimensional schematic diagram of the infrared touch screen assembly of the present invention.

Fig. 3 is a schematic diagram of the installation structure of the embodiment of the LCD touch TV of the present invention.

The main component symbols are explained as follows:

1. Face shell 2. Bottom shell

3. Connection block 4. Translucent sheet

5. Circuit board components 6. Tempered glass

7. Several screws 8. Connectors

10. Infrared touch screen component 11. Folding edge

21. Hemming 22. Card slot

20. Flat profile 23. Translucent sheet groove

24. Glass tank 91. TV front case

Detailed ways

In order to describe the utility model more clearly, the utility model will be further described below in conjunction with the accompanying drawings.

Please refer to Figures 1-3, the LCD touch TV of the present invention includes a TV and an infrared touch screen assembly 10 installed in front of the TV screen, the infrared touch screen assembly 10 includes an outer frame and an infrared touch screen circuit board installed in the cavity of the outer frame The assembly 5 and the light-transmitting sheet 4, the outer frame is composed of four flat profiles 20 whose head and tail ends are fixed by four connecting blocks. A light-transmitting film groove 23 is oppositely provided on the inner side, and the light-transmitting film 4 is placed in the light-transmitting film groove 23 between the face shell 1 and the bottom shell 2 .

Compared with the situation in the prior art, the liquid crystal touch TV provided by the utility model is not only convenient for the installation and debugging of the infrared touch screen, but also facilitates the inspection and maintenance when the touch screen detects abnormalities. There are no gaps between them; it meets the requirements of explosion-proof, waterproof and dustproof.

In this embodiment, the above-mentioned TV is an LCD TV or a plasma TV. Of course, the utility model is not limited to the two implementation modes of LCD TV or plasma TV, and other implementation modes also belong to the simple deformation or transformation of the utility model, and fall into the protection scope of the utility model.

In this embodiment, a glass groove 24 for placing the tempered glass 6 is provided on the inner end surface of the above-mentioned bottom case 2 . Of course, the utility model is not limited to the embodiment of fixing the tempered glass 6 with grooves, other implementations also belong to the simple deformation or transformation of the utility model, and fall into the protection scope of the utility model.

In this embodiment, the above-mentioned infrared touch screen assembly 10 is fixedly connected to the TV through the connecting piece 8 by screws, and the infrared touch screen assembly is outside the front shell 91 of the TV. Of course, the present invention is not limited to the embodiment of fixing the infrared touch screen assembly with screws, and other embodiments also belong to the simple deformation or transformation of the present invention, and fall within the scope of protection of the present invention.

In this embodiment, the above-mentioned infrared touch screen assembly 10 is fixedly connected with the TV through the connecting piece 8 by screws, and the infrared touch screen assembly is inside the front shell 91 of the TV. Certainly, the present invention is not limited to the embodiment of the installation position of the infrared touch screen assembly, other embodiments also belong to the simple deformation or transformation of the present invention, and fall into the protection scope of the present invention.

In this embodiment, the inner surface of the bottom case 2 of the above-mentioned infrared touch screen assembly 10 is provided with a slot 22 for placing the infrared touch screen circuit board assembly, and the infrared touch screen circuit board assembly 5 is fixed in the slot 22 by screws or rivets. Certainly, the utility model is not limited to the two implementations of the screw or the rivet, and other implementations also belong to the simple deformation or transformation of the utility model, and fall within the protection scope of the utility model.

In this embodiment, a cable channel is provided on the surface of the connecting block of the above-mentioned infrared touch screen assembly 10 for the cables connected to the infrared touch screen circuit board assemblies to pass through. Certainly, the utility model is not limited to the shape or quantity of the cable channel, and other embodiments also belong to the simple deformation or transformation of the utility model, and fall within the protection scope of the utility model.

The assembly process of the utility model is as follows: firstly assemble the infrared touch screen, fix the infrared touch screen circuit board components in the slots of the four bottom shells respectively through screws, and then buckle the four surface shells on the four bottom shells correspondingly, And fix it by several screws to form four flat profiles. The light-transmitting sheet is placed in the light-transmitting sheet groove between the surface shell and the bottom shell, and the four sides of a piece of tempered glass are correspondingly placed into the four glass grooves on the inner end surface of the bottom shell. , and then fix the front and rear ends of the face shell through four connecting blocks with screws to form a rectangular infrared touch screen frame, and the cables connecting each infrared touch screen circuit board assembly are respectively placed on the cable channels on the surface of the connecting block In this way, the problem of poor contact caused by cable winding is effectively avoided, thus completing the assembly of the entire infrared touch screen assembly. Then screw the adjusted infrared touch screen assembly in front of the LCD TV screen through the connecting piece with screws, and lock it in the front shell of the TV with screws through the connecting piece, or lock the infrared touch screen assembly separately through the connecting piece through screws. In the front shell of the TV; then the front and rear shells of the TV are installed to complete the assembly of the whole LCD touch TV.

As shown in Fig. 1 and Fig. 2: the out-going TV of the present utility model consists of four touch screen circuit board assemblies 5 which are respectively screwed and locked in the corresponding four slots 22 of the bottom shell 2 through several screws 7, and welded on the circuit board. The infrared emitting array and the receiving array correspond to one-to-one transmitting and receiving, and the four surface shells 1 are fastened on the four bottom shells 2 respectively, and are fixed by a number of screws 7 to form four flat profiles 20, in order to meet the requirements of sealing, protecting According to the requirements of the circuit board assembly 5, the outer sides of the front shell 1 and the bottom shell 2 are respectively designed with folded edges 11 and 21 and fastened together. In the light-transmitting film groove 23 between the shell 1 and the bottom shell 2, put the four sides of a matching toughened glass 6 into the glass groove 24 on the inner side of the bottom shell 2, and pass through the front and rear ends of the front shell 1 respectively. Four connecting blocks 3 are screwed and fixed with screws 7 to form a rectangular infrared touch screen assembly 10, and the light-transmitting sheet 4 is placed in the light-transmitting sheet groove 23 between the surface case 1 and the bottom case 2 to meet the dustproof and waterproof design It is required that the transmittance of the light-transmitting sheet 4 for infrared rays is as high as 60%, which better solves the problem of poor sealing between the liquid crystal screen and the light-transmitting sheet 4. In order to further improve the performance of the infrared touch LCD TV Explosion-proof performance, the purpose of adding a tempered glass 6 is to protect the LCD screen and explosion-proof.

As shown in Figure 3: it is the second embodiment of the present utility model, the infrared touch screen assembly 10 that has been debugged is locked on the stud in the front shell 91 of the TV through the connecting piece 8, and then the front shell of the TV is 91. After installing the rear shell, the assembly of the whole LCD touch TV is completed.

In the process of using the liquid crystal touch TV, once the touch screen detects abnormalities and needs to be overhauled and maintained, loosen the screws connecting the front shell 91 and the rear shell of the TV, and then connect the face shell 1 and the bottom shell 10 of the infrared touch screen assembly 10 Unscrew the shell 2, take off the infrared touch screen panel 1, and carry out inspection and maintenance operations on the circuit board assembly 5. If there is a serious problem that needs to be reversed to the factory for repair, the entire infrared touch screen assembly 10 can be removed without dismantling the entire set. The touch TV is shipped anti-ship, and the whole installation and maintenance process is simple and convenient.

The above disclosures are only a few specific embodiments of the utility model, but the utility model is not limited thereto, and any changes conceivable by those skilled in the art should fall within the protection scope of the utility model.

Claims (7)

1. A liquid crystal touch TV, characterized in that it comprises a TV and an infrared touch screen assembly installed in front of the TV screen, the infrared touch screen assembly includes an outer frame and an infrared touch screen circuit board assembly and a light-transmitting sheet installed in the cavity of the outer frame, The outer frame is composed of four flat profiles fixed by four connecting blocks. The flat profiles are respectively composed of a surface shell and a bottom shell. The sheet is placed in the transparent sheet groove between the front shell and the bottom shell. 2. The liquid crystal touch TV according to claim 1, wherein the TV is a liquid crystal TV or a plasma TV. 3. The liquid crystal touch TV according to claim 1 or 2, characterized in that, a glass groove for placing tempered glass is provided on the inner end surface of the bottom case. 4 . The liquid crystal touch TV according to claim 3 , wherein the infrared touch screen assembly is fixedly connected to the TV via a connecting piece by screws, and the infrared touch screen assembly is outside the front shell of the TV. 5 . The liquid crystal touch TV according to claim 4 , wherein the infrared touch screen assembly is fixedly connected to the TV via a connecting piece by screws, and the infrared touch screen assembly is inside the front shell of the TV. 6 . 6. The liquid crystal touch TV according to claim 5, characterized in that, the inner surface of the bottom shell of the infrared touch screen assembly is provided with a card slot for placing the infrared touch screen circuit board assembly, and the infrared touch screen circuit board assembly is connected by screws or rivets. fixed in the slot. 7 . The liquid crystal touch TV according to claim 6 , wherein a cable channel is opened on the surface of the connecting block of the infrared touch screen assembly for connecting the cables of each infrared touch screen circuit board assembly. 7 .

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