Backlight lamp bar assembly for optical touch all-in-one machine

Abstract

The utility model relates to the technical field of optical touch control all-in-one machines, in particular to a backlight light bar assembly for an optical touch control all-in-one machine, which comprises a backlight light bar component group, the backlight light bar component group comprises a light bar PCB (printed circuit board), a backlight light assembly is arranged on the front surface of the light bar PCB, and the light bar PCB is electrically connected with an optical chip. Compared with an infrared emission light bar assembly used for a traditional all-in-one machine touch control function, the novel scheme achieves integrated touch control and backlight illumination through integration of the backlight lamp assembly, reduces use of extra assemblies, and accordingly reduces cost. The number of independent assemblies is reduced, the failure rate is reduced, the reliability of the system is improved, transmission and processing of touch signals are quicker and more accurate, the touch response speed is increased, the user experience is improved, and the product is lighter, thinner and more attractive.

Description

Technical Field

[0001] The utility model relates to the technical field of optical touch all-in-one machines, and specifically relates to a backlight strip assembly for an optical touch all-in-one machine. Background Technique

[0002] The backlight strip assembly for an optical touch all-in-one machine refers to the backlight system used in an optical touch all-in-one machine, similar to the backlight strips in a liquid crystal TV. The main function of these backlight strip assemblies is to provide uniform light sources for the display screen to ensure the brightness and contrast of the displayed content.

[0003] The existing touch function of the all-in-one machine is realized by the infrared emission lamp strip assembly installed around the screen of the all-in-one machine. However, this infrared emission lamp strip assembly has the following problems: high usage cost, high failure rate, slow touch response, large product structure thickness, affecting the user experience, and there is a lack of a heat dissipation mechanism on the backlight strip in the current touch all-in-one machine. When used for a long time for lighting, there is a problem that heat cannot be dissipated, reducing the practicability. Content of the Utility Model

[0004] In order to overcome the above technical problems, the purpose of the utility model is to provide a backlight strip assembly for an optical touch all-in-one machine to solve the problems of high usage cost, high failure rate, slow touch response, and large product structure thickness of the existing infrared emission lamp strip assembly as mentioned in the above background technique, which affect the user experience.

[0005] To achieve the above purpose, the utility model provides the following technical solution:

[0006] A backlight strip assembly for an optical touch all-in-one machine includes an all-in-one machine component group. The all-in-one machine component group includes a front housing. One side of the front housing is provided with a screen component. A light guide film is arranged on the back of the screen component. A rear housing is arranged outside the light guide film. The front housing and the rear housing are connected. The screen component and the light guide film are installed in the rear housing. A backlight strip component group is arranged inside the rear housing. The backlight strip component group is used for display backlight and touch detection. The backlight strip component group includes a lamp strip PCB board. A backlight component is arranged on the front of the lamp strip PCB board. The lamp strip PCB board is electrically connected to an optical chip. A heat dissipation component group is arranged inside the front housing. The heat dissipation component group is used for cooling the backlight strip component group.

[0007] Preferably: Multiple groups of the lamp strip PCB board and the backlight component are provided, and multiple groups of the lamp strip PCB board and the backlight component are evenly distributed on the front of the rear housing. The backlight component internally includes white backlight beads and infrared backlight beads.

[0008] Preferably, there are ten backlight assemblies, and the ten backlight assemblies are evenly distributed on the light bar PCB board. The backlight assemblies are soldered on the front side of the light bar PCB board, and the working surfaces of the infrared backlight beads face the light guide film and the screen component.

[0009] Preferably, the optical chip is connected to the rear housing, the light bar PCB board is connected to the rear housing through a bracket, the optical chip is electrically connected to multiple groups of light bar PCB boards, the infrared backlight beads in the backlight assembly emit infrared light to detect touches. When the infrared backlight beads sense a touch, they send signals to the optical chip. The optical chip will perform arithmetic processing on the received signals to obtain the specific touch position, and the infrared backlight beads can send control signals to the all-in-one machine component group.

[0010] Preferably, the heat dissipation component group includes a copper heat conduction ring. A copper heat conduction sheet is arranged on the side of the copper heat conduction ring, a heat dissipation fin piece is arranged outside the copper heat conduction sheet, and a fan piece is connected to the side of the heat dissipation fin piece.

[0011] Preferably, there are multiple groups of the copper heat conduction ring and the copper heat conduction sheet. Each group of copper heat conduction rings is in contact with each group of backlight assemblies respectively. The copper heat conduction ring passes through the rear housing and is connected to the copper heat conduction sheet. Multiple copper heat conduction sheets are distributed between the rear housing and the front housing.

[0012] Preferably, the heat dissipation fin piece is connected between multiple groups of copper heat conduction sheets. The fan piece is installed between the rear housing and the front housing through a bracket, and the heat dissipation fin piece is installed on the back of the rear housing through a bracket.

[0013] Compared with the prior art, the beneficial effects of the present utility model are:

[0014] 1. The backlight bar assembly for an optical touch all-in-one machine is provided with a backlight bar component group. The touch function of the existing all-in-one machine is realized by the infrared emission light bar assembly installed around the all-in-one machine screen. However, this infrared emission light bar assembly has the following problems: high cost of use, high failure rate, slow touch response, and thick product structure, which affects the use experience. In the corresponding designed backlight bar component group, a plurality of groups of evenly distributed light bar PCB boards and backlight assemblies are installed inside the rear shell body. The distribution mode of the light bar PCB boards can be horizontal or vertical, and the installation direction of the light bar PCB boards is not limited. The working end of the backlight assembly faces the light guide film and the screen component. The white backlight beads inside the backlight assembly are used to provide backlight illumination to the light guide film and the screen component, and the infrared backlight beads in the backlight assembly are used to face the light guide film and the screen component. The infrared light emitted by the component is emitted by the infrared backlight lamp bead at the corresponding position. The infrared light is reflected by the infrared light and received by the optical chip in the backlight bar component group. The optical chip analyzes and calculates the signal to obtain the specific touch position, and then sends a control signal to the all-in-one component group. At this time, the touch operation is completed. Compared with the infrared emission light bar component used in the traditional all-in-one touch function, the new solution realizes integrated touch and backlighting by integrating the backlight component, reducing the use of additional components and thus reducing costs; reducing the number of independent components, reducing the failure rate, and improving the reliability of the system. The transmission and processing of touch signals are faster and more accurate, thereby improving the touch response speed, improving the user experience, and making the product thinner and more beautiful.

[0015] 2. The backlight bar assembly for an optical touch-control integrated machine is provided with a heat dissipation component group. The current backlight bar in the touch-control integrated machine lacks a heat dissipation mechanism. When used for a long time for lighting, there is a problem that heat cannot be dissipated, which reduces practicality. In the corresponding designed heat dissipation component group, the copper heat-conducting ring is sleeved on the outside of the backlight assembly. When the backlight assembly works for a long time, heat will accumulate, and the heat will be conducted to the contacting copper heat-conducting ring. The heat will be conducted to the copper heat-conducting sheet through the copper heat-conducting ring, and then to the connected heat dissipating fin assembly. When the fan assembly is turned on, the external air can circulate through the vents on both sides of the rear shell, and the airflow will take away the heat on the heat dissipating fin assembly when passing through the heat dissipating fin assembly, thereby achieving the purpose of lowering the temperature of the backlight assembly. During long-term use, the heat accumulation of the backlight assembly can be effectively avoided, which is conducive to the long-term use environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the internal structure of the integrated machine component group of the utility model;

[0018] Figure 3 For the present utility model Figure 2 Schematic structural view of part A in

[0019] Figure 4 Schematic structural view of the light bar PCB board and the backlight assembly part of the present utility model;

[0020] Figure 5 Schematic circuit diagram of the backlight assembly of the present utility model;

[0021] Figure 6 Schematic structural view of the overall cross-section of the present utility model;

[0022] Figure 7 For the present utility model Figure 6 Schematic structural view of part B in

[0023] Figure 8 Schematic overall exploded structural view of the present utility model.

[0024] In the figure: 01, all-in-one machine component group; 11, front housing; 12, screen component; 13, light guide film; 14, rear housing; 02, backlight bar component group; 21, light bar PCB board; 22, backlight assembly; 23, optical chip; 03, heat dissipation component group; 31, copper heat conduction ring; 32, copper heat conduction sheet; 33, heat dissipation fin component; 34, fan component. Detailed implementation manners

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0026] Please refer to Figure 1-8, an embodiment provided by the present utility model: a backlight strip assembly for an optical touch all-in-one machine, including an all-in-one machine component group 01. The all-in-one machine component group 01 includes a front housing 11. On one side of the front housing 11, there is a screen member 12. On the back of the screen member 12, there is a light guide film 13. Outside the light guide film 13, there is a rear housing 14. The front housing 11 and the rear housing 14 are connected. The screen member 12 and the light guide film 13 are installed inside the rear housing 14. Inside the rear housing 14, there is a backlight strip component group 02, which is used for displaying backlight and performing touch detection. The backlight strip component group 02 includes a lamp strip PCB board 21. On the front of the lamp strip PCB board 21, there is a backlight component 22. The lamp strip PCB board 21 is electrically connected to an optical chip 23. Inside the front housing 11, there is a heat dissipation component group 03, which is used to cool the backlight strip component group 02.

[0027] There are multiple groups of the lamp strip PCB board 21 and the backlight component 22, and the multiple groups of the lamp strip PCB board 21 and the backlight component 22 are evenly distributed on the front of the rear housing 14. Inside the backlight component 22, there are white backlight beads and infrared backlight beads.

[0028] There are ten backlight components 22, and the ten backlight components 22 are evenly distributed on the lamp strip PCB board 21. The backlight components 22 are welded to the front of the lamp strip PCB board 21. The working surface of the infrared backlight beads faces the light guide film 13 and the screen member 12.

[0029] The optical chip 23 is connected to the rear housing 14. The lamp strip PCB board 21 is connected to the rear housing 14 through a bracket. The optical chip 23 is electrically connected to multiple groups of the lamp strip PCB board 21. The infrared backlight beads in the backlight component 22 emit infrared light to detect touches. When the infrared backlight beads sense a touch, they will send a signal to the optical chip 23. The optical chip 23 will perform arithmetic processing on the received signal to obtain the specific touch position. The infrared backlight beads can send control signals to the all-in-one machine component group 01.

[0030] The heat dissipation component group 03 includes a copper heat conduction ring 31. On the side of the copper heat conduction ring 31, there is a copper heat conduction sheet 32. Outside the copper heat conduction sheet 32, there is a heat dissipation fin member 33. On the side of the heat dissipation fin member 33, there is a fan member 34.

[0031] There are multiple groups of the copper heat conduction ring 31 and the copper heat conduction sheet 32, and multiple groups of the copper heat conduction rings 31 are respectively in contact with multiple groups of the backlight components 22. The copper heat conduction ring 31 passes through the rear housing 14 and is connected to the copper heat conduction sheet 32. Multiple copper heat conduction sheets 32 are distributed between the rear housing 14 and the front housing 11.

[0032] The heat dissipation fin assembly 33 is connected between multiple groups of copper heat conductive sheets 32, and the fan assembly 34 is installed between the rear shell 14 and the front shell 11 through a bracket. The heat dissipation fin assembly 33 is installed on the back of the rear shell 14 through a bracket, and ventilation holes are provided on both sides of the rear shell 14 at positions corresponding to the fan assembly 34.

[0033] Working principle: The existing all-in-one touch function is achieved by installing infrared emission light strip components around the screen, but this component has problems such as high cost, high failure rate, slow touch response, thick product structure, and affecting the user experience.

[0034] In the designed backlight light bar component group 02, multiple groups of evenly distributed light bar PCB boards 21 and backlight lamp assemblies 22 are installed inside the rear housing 14. The light bar PCB boards 21 can be distributed horizontally or vertically, and the specific installation direction is not limited. The working end of the backlight lamp assembly 22 faces the light guide film 13 and the screen component 12, and the white backlight lamp beads therein are used to provide backlight illumination for the light guide film 13 and the screen component 12, while the infrared backlight lamp beads are used to emit infrared light, facing the light guide film 13 and the screen component 12.

[0035] When the user touches the screen component 12 with a finger, the infrared light emitted by the infrared backlight beads at the corresponding position will be blocked, and the infrared backlight beads will send a signal to the optical chip 23, which determines the specific touch position by analyzing the signal. This signal processing process is fast and accurate. Even in a dim environment, the infrared backlight beads can quickly identify touch events, similar to the infrared fast identification function in the security system. The optical chip 23 then sends a control signal to the integrated machine component group 01 to complete the touch operation.

[0036] Compared with the infrared emission light bar components used in the traditional all-in-one touch function, the new solution realizes integrated touch and backlighting by integrating the backlight component 22, reducing the use of additional components, thereby reducing costs; reducing the number of independent components, reducing the failure rate, and improving system reliability; the transmission and processing of touch signals are faster and more accurate, which improves the touch response speed, improves the user experience, and makes the product thinner and more beautiful.

[0037] The backlight strip in the current touch-control integrated machine lacks a heat dissipation mechanism, so the heat cannot be dissipated when used for a long time, which reduces the practicality. In the designed heat dissipation component group 03, the copper heat conduction ring 31 is sleeved on the outside of the backlight assembly 22. When working, the heat is transferred to the copper heat conduction ring 31, then to the copper heat conduction sheet 32, and finally to the heat dissipation fin member 33. When the fan member 34 is turned on, the external air flows through the vents on both sides of the rear housing 14. When the airflow passes through the heat dissipation fin member 33, the heat is taken away, the temperature of the backlight assembly 22 is reduced, and the heat accumulation is effectively avoided, which is suitable for long-term use.

[0038] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. A backlight strip assembly for an optical touch integrated machine, comprising an integrated machine component group (01), wherein the integrated machine component group (01) comprises a front housing (11), a screen component (12) is arranged on one side of the front housing (11), a light guide film (13) is arranged on the back of the screen component (12), a rear housing (14) is arranged outside the light guide film (13), the front housing (11) and the rear housing (14) are connected, and the screen component (12) and the light guide film (13) are installed in the rear housing (14), characterized in that: A backlight light bar component group (02) is arranged inside the rear housing (14), the backlight light bar component group (02) is used for displaying backlight and performing touch detection, the backlight light bar component group (02) comprises a light bar PCB board (21), a backlight assembly (22) is arranged on the front of the light bar PCB board (21), and the light bar PCB board (21) is electrically connected to an optical chip (23); A heat dissipation component group (03) is arranged inside the front housing (11), and the heat dissipation component group (03) is used to cool the backlight light bar component group (02).

2. The backlight strip assembly for an optical touch integrated machine according to claim 1, characterized in that: The light bar PCB board (21) and the backlight lamp assembly (22) are provided in multiple groups, and the multiple groups of light bar PCB boards (21) and the backlight lamp assembly (22) are evenly distributed on the front side of the rear housing (14), and the backlight lamp assembly (22) is provided with white backlight lamp beads and infrared backlight lamp beads inside.

3. The backlight strip assembly for an optical touch integrated machine according to claim 2, characterized in that: Ten backlight lamp assemblies (22) are provided, and the ten backlight lamp assemblies (22) are evenly distributed on the light bar PCB board (21); the backlight lamp assemblies (22) are welded on the front side of the light bar PCB board (21); and the working surface of the infrared backlight lamp beads faces the light guide film (13) and the screen component (12).

4. The backlight strip assembly for an optical touch integrated machine according to claim 1, characterized in that: The optical chip (23) is connected to the rear housing (14); the light bar PCB board (21) is connected to the rear housing (14) via a bracket; the optical chip (23) and the plurality of light bar PCB boards (21) are electrically connected; the infrared backlight lamp beads in the backlight lamp assembly (22) emit infrared light to detect touch; the infrared backlight lamp beads sense touch and send a signal to the optical chip (23); the optical chip (23) performs calculations on the received signal to obtain a specific touch position; and the infrared backlight lamp beads can send a control signal to the all-in-one component group (01).

5. The backlight strip assembly for an optical touch integrated machine according to claim 1, characterized in that: The heat dissipation component group (03) comprises a copper heat-conducting ring (31), a copper heat-conducting sheet (32) is arranged on the side of the copper heat-conducting ring (31), a heat-dissipating fin member (33) is arranged outside the copper heat-dissipating sheet (32), and a fan member (34) is connected to the side of the heat-dissipating fin member (33).

6. The backlight strip assembly for an optical touch integrated machine according to claim 5, characterized in that: The copper heat-conducting ring (31) and the copper heat-conducting sheet (32) are provided in a plurality of groups, and the plurality of groups of copper heat-conducting rings (31) are respectively in contact with a plurality of groups of backlight lamp assemblies (22); the copper heat-conducting ring (31) passes through the rear housing (14) and is connected to the copper heat-conducting sheet (32); and the plurality of copper heat-conducting sheets (32) are distributed between the rear housing (14) and the front housing (11).

7. The backlight strip assembly for an optical touch integrated machine according to claim 5, characterized in that: The heat dissipation fin member (33) is connected between a plurality of groups of copper heat conducting plates (32), and the fan member (34) is installed between the rear housing (14) and the front housing (11) via a bracket, wherein the heat dissipation fin member (33) is installed on the back of the rear housing (14) via a bracket.

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