Screen testing device

Abstract

The utility model discloses a screen testing device which comprises a shell and a main control circuit board arranged in the shell, the main control circuit board is provided with a main control chip and a testing port used for being connected with a screen to be tested, and the shell is composed of a metal face shell and a metal bottom shell. The metal face shell and the metal bottom shell are buckled to form a sealed space, and a heat conduction protruding block extends on the inner side of the metal face shell and makes close contact with the main control chip. The beneficial effects of the utility model are that: 1, the heat dissipation performance is high, and the main control circuit board and the main control chip in the housing cannot be damaged due to too high internal temperature even in a high-temperature and high-humidity environment; and on the other hand, the sealing performance is good, the metal face shell and the metal bottom shell are buckled to form a sealed space, and a sealing ring is arranged, so that water vapor can be prevented from entering the shell in a high-temperature and high-humidity testing environment, and internal circuit components are protected.

Description

Technical Field

[0001] The utility model relates to the technical field related to screen testing, in particular to a screen testing device. Background Art

[0002] An existing screen detection device is used to test the screen of an electronic product, and generally includes a shell and a main control circuit board arranged inside the shell. The main control circuit board is provided with a main control chip and a test port for connecting to the screen to be tested. The test port is connected to one end of a flexible connecting cable, and one end of the flexible connecting cable is connected to the screen to be tested.

[0003] The disadvantages of existing screen testing devices are: first, the heat dissipation performance is poor. The shell is usually made of plastic. Since some screen testing items need to be carried out in a high temperature and high humidity environment, the heat generated by the main control circuit board and the main control chip installed inside the shell is difficult to dissipate to the outside, resulting in excessive internal temperature and easily burning the main control chip; on the other hand, the sealing is poor, and water vapor is easy to enter the high temperature and high humidity test environment, which has an adverse effect on the internal circuit components. Utility Model Content

[0004] In order to solve the defects in the prior art, the utility model provides a screen testing device.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] A screen testing device is used to test the screen of an electronic product, comprising a shell and a main control circuit board arranged inside the shell, the main control circuit board is provided with a main control chip and a test port for connecting to the screen to be tested, the shell is composed of a metal surface shell and a metal bottom shell, the metal surface shell and the metal bottom shell are buckled to form a sealed space, the inner side of the metal surface shell is extended with a heat conductive bump, and the heat conductive bump is in close contact with the main control chip.

[0007] Preferably, a thermal conductive adhesive layer is provided between the thermal conductive bump and the main control chip. The provision of the thermal conductive adhesive layer can ensure that the thermal conductive bump will not cause a large mechanical impact force on the main control chip during the buckling process of the metal surface shell and the metal bottom shell, thereby avoiding damage to the main control chip, and at the same time ensure the thermal conductivity between the thermal conductive bump and the main control chip.

[0008] Preferably, a sealing ring is provided between the metal surface shell and the metal bottom shell, and after the metal surface shell and the metal bottom shell are buckled together, the sealing ring can further ensure the sealing of the interior of the shell.

[0009] Preferably, the metal surface shell and the metal bottom shell are both integrally formed, and the metal surface shell and the thermal conductive bumps are integrally formed, and the integrated forming design can further enhance the heat dissipation effect.

[0010] Preferably, four or more main control circuit boards are arranged in the housing, and four or more heat conductive bumps are arranged correspondingly. By arranging multiple main control circuit boards, multiple test ports can be arranged at the same time, thereby improving test efficiency, shortening test time, and thus increasing the service life of the screen test device.

[0011] Preferably, a buckle is provided on the metal surface shell, a slot is correspondingly provided on the metal bottom shell, a buckle column is provided in the slot, and the buckle is buckled and fixedly connected with the buckle column.

[0012] Preferably, the buckle includes a wrench portion, a shaft portion and a hook portion, the shaft portion is fixed in the metal surface shell, the shaft portion is arranged between the wrench portion and the hook portion, and the hook portion is buckled and connected to the buckle column.

[0013] The beneficial effects of the utility model are:

[0014] The beneficial effects of the existing screen testing device are: first, it has high heat dissipation performance. Since a metal cover and a metal bottom shell are used, a thermally conductive bump extends from the inner side of the metal cover, and the thermally conductive bump is in close contact with the main control chip. In this way, the thermally conductive bump can quickly conduct heat to the entire metal shell, and has higher heat dissipation performance. Even in a high temperature and high humidity environment, the main control circuit board and the main control chip inside the shell will not be damaged due to excessive internal temperature. On the other hand, it has good sealing performance. The sealed space formed by the metal cover and the metal bottom shell and the setting of the sealing ring can prevent water vapor from entering the shell under a high temperature and high humidity test environment, thereby protecting the internal circuit components. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 is an overall structural diagram of a screen testing device in an embodiment;

[0017] Figure 2 is a structural diagram of the screen testing device of the embodiment in the open state;

[0018] Figure 3 It is a partial cross-sectional structural diagram of the screen testing device of the embodiment.

[0019] In the figure: 1. Metal surface; 2. Metal bottom shell; 3. Main control circuit board; 4. Main control chip; 5. Test port; 6. Thermal conductive adhesive layer; 7. Sealing ring; 11. Thermal conductive bump; 12. Buckle; 21. Slot; 22. Buckle column; 121. Wrench part; 122. Shaft part; 123. Hook part. DETAILED DESCRIPTION

[0020] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0021] This embodiment is a screen testing device, and its overall structure diagram is shown in the attached Figure 1 , see the attached diagram of the open state structure Figure 2 , Figure 3 The screen test device of this embodiment is a partial cross-sectional structural diagram. The screen test device of this embodiment is used to test the screen of an electronic product, and includes a metal cover 1, a metal bottom cover 2 and a main control circuit board 3. The main control circuit board 3 is provided with a main control chip 4 and a test port 5 for connecting to the screen to be tested. The metal cover 1 and the metal bottom cover 2 are buckled to form a sealed space. A heat-conducting bump 11 extends from the inner side of the metal cover 1. The heat-conducting bump 11 is in close contact with the main control chip 4. A heat-conducting adhesive layer 6 is provided between the heat-conducting bump 11 and the main control chip 4. Through the provision of the heat-conducting adhesive layer 6, on the one hand, it can be ensured that the heat-conducting bump 11 will not cause a large mechanical impact force on the main control chip 4 during the buckling process of the metal cover 1 and the metal bottom cover 2, thereby avoiding damage to the main control chip 4. At the same time, the heat conduction efficiency between the heat-conducting bump 11 and the main control chip 4 can be ensured. A sealing ring 7 is provided between the metal cover 1 and the metal bottom cover 2. After the metal cover 1 and the metal bottom cover 2 are buckled, the sealing ring 7 can further ensure the sealing inside the shell. A buckle 12 is provided on the metal surface shell 1, and a corresponding slot 21 is provided on the metal bottom shell 2. A buckle column 22 is provided in the slot. The buckle 12 includes a wrench part 121, a shaft part 122 and a hook part 123. The shaft part 122 is fixed in the metal surface shell 1, and the shaft part 122 is provided between the wrench part 121 and the hook part 123. The hook part 123 is buckled and connected with the buckle column 22.

[0022] In this embodiment, the metal surface shell 1 and the metal bottom shell 2 are both integrally formed, the metal surface shell 1 and the heat-conducting bump 11 are integrally formed, and the metal material can be aluminum. The integrated molding design can further increase the heat dissipation effect.

[0023] In this embodiment, four main control circuit boards are arranged in the shell, and four thermal conductive bumps 11 are arranged correspondingly. The four thermal conductive bumps 11 correspond to the positions of four main control chips respectively. By setting multiple main control circuit boards, multiple test ports can be set at the same time, which improves the test efficiency, shortens the test time, and thus increases the service life of the screen test device.

[0024] The beneficial effects of this embodiment are:

[0025] The beneficial effects of the existing screen testing device are: first, it has high heat dissipation performance. Since a metal cover and a metal bottom shell are used, a thermally conductive bump extends from the inner side of the metal cover, and the thermally conductive bump is in close contact with the main control chip. In this way, the thermally conductive bump can quickly conduct heat to the entire metal shell, and has higher heat dissipation performance. Even in a high temperature and high humidity environment, the main control circuit board and the main control chip inside the shell will not be damaged due to excessive internal temperature. On the other hand, it has good sealing performance. The sealed space formed by the metal cover and the metal bottom shell and the setting of the sealing ring can prevent water vapor from entering the shell under a high temperature and high humidity test environment, thereby protecting the internal circuit components.

[0026] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A screen testing device for testing the screen of an electronic product, comprising a housing and a main control circuit board arranged inside the housing, wherein the main control circuit board is provided with a main control chip and a test port for connecting to a screen to be tested, characterized in that: The shell is composed of a metal surface shell and a metal bottom shell. The metal surface shell and the metal bottom shell are buckled together to form a sealed space. A heat-conducting bump extends from the inner side of the metal surface shell, and the heat-conducting bump is in close contact with the main control chip.

2. A screen testing device according to claim 1, characterized in that: A heat-conducting adhesive layer is arranged between the heat-conducting bump and the main control chip.

3. A screen testing device according to claim 1, characterized in that: A sealing ring is arranged between the metal surface shell and the metal bottom shell.

4. A screen testing device according to claim 1, characterized in that: The metal surface shell and the metal bottom shell are both integrally formed.

5. A screen testing device according to claim 1, characterized in that: The metal surface shell and the heat-conducting protrusion are integrally formed.

6. A screen testing device according to claim 1, characterized in that: Four or more main control circuit boards are arranged in the shell, and four or more heat-conducting bumps are arranged correspondingly.

7. A screen testing device according to claim 1, characterized in that: The metal surface shell is provided with a buckle, and the metal bottom shell is correspondingly provided with a slot, and a buckle column is provided in the slot, and the buckle is buckled and fixedly connected with the buckle column.

8. A screen testing device according to claim 7, characterized in that: The buckle includes a wrench part, a shaft part and a hook part, the shaft part is fixed in the metal surface shell, the shaft part is arranged between the wrench part and the hook part, and the hook part is buckled and connected with the buckle column.

Images