Access control equipment and electronic equipment
By using thermal conductivity and heating components in the access control equipment, the heat generated by the processor module and heating it in a low-temperature environment is solved, and the effect of efficient defog removal and low-temperature start is achieved, reducing the effect of reducing the The cost.
Patent Information
- Application Number
- CN202421372659.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-14
- Publication Date
- 2025-02-21
- Estimated Expiration
- 2034-06-14
AI Technical Summary
When the temperature drops in the external ambient temperature is large, the inner surface of the window glass of the access control equipment with a camera is prone to fog, affecting the imaging quality. The existing solutions are energy-consuming, complex in structure and high in cost.
An access control device is designed, using thermal conductivity components and heating components to transfer the heat generated by the processor module to the window glass through the thermal conductivity components, and combined with the heating components to increase the temperature of the thermal conductivity components in a low temperature environment to achieve the defog effect.
It effectively reduces the defogging cost of access control equipment, improves the defogging efficiency, and can start normally in a low-temperature environment, meeting the equipment's low-temperature startup needs.
Smart Images
Figure CN222514744U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of intelligent security equipment, and in particular to access control equipment and electronic equipment. Background Art
[0002] When the ambient temperature drops significantly, the inner surface of the window glass of the access control device with a camera is prone to fogging, seriously affecting the image quality. The usual solution is to use an electric heating pad to increase the temperature of the window glass to achieve the purpose of defogging or anti-fogging, but this solution is energy-intensive, complex in structure and costly. Utility Model Content
[0003] In order to solve the deficiencies of the prior art, the purpose of the present application is to provide an access control device and an electronic device, which solves the problem of high cost of defogging the window glass of the device.
[0004] To achieve the above objectives, this application adopts the following technical solutions:
[0005] In the first aspect, the present application provides an access control device, which includes a shell, a screen, an electronic component and a heat-conducting component, the shell includes a middle frame and a rear shell covering the middle frame, the middle frame is provided with a window hole; the screen is arranged on the side of the middle frame away from the rear shell; the electronic component is arranged between the middle frame and the rear shell, the electronic component includes a circuit board and a processor module arranged on the circuit board; the heat-conducting component is arranged on the middle frame and extends in the direction of the processor module, at least part of the heat-conducting component is connected to the processor module, wherein the middle frame includes a heat-insulating groove, the heat-insulating groove is arranged around the heat-conducting component, and the area surrounded by the heat-insulating groove is connected to the area where the window hole is located.
[0006] Furthermore, the middle frame is divided into a first area, a second area and a third area. The area where the window hole is located is the first area, and the area surrounded by the insulation groove is the second area. The first area is connected to the second area, and the second area and the third area are separated by the insulation groove.
[0007] Furthermore, the middle frame includes a bottom wall and side walls distributed around the outer edge of the bottom wall, and the heat conduction component includes a boss integrally formed with the bottom wall, and the boss extends from the bottom wall to the direction of the processor module.
[0008] Furthermore, the heat-conducting assembly also includes a heat-conducting sheet, which is arranged between the boss and the processor module, and two sides of the heat-conducting sheet are respectively connected to the boss and the processor module.
[0009] Furthermore, the thermally conductive sheet includes at least one of the following materials: a thermally conductive pad, a thermally conductive paste, a thermally conductive gel, and a thermally conductive foam.
[0010] Furthermore, the boss and the middle frame are both made of graphene composite materials.
[0011] Furthermore, the access control device also includes a heating component connected to the heat-conducting component, and the heating component is coupled to the electronic component.
[0012] Furthermore, the heat-conducting component includes a boss arranged in the area surrounded by the heat-insulating groove, the heating component includes a heating electrode, the heating electrode is buried in the boss, and the electronic component includes a power supply unit for supplying power to the processor module, and the heating electrode is electrically connected to the power supply unit.
[0013] Furthermore, the processor module includes a heating drive circuit, and the electronic component also includes a temperature sensor for sampling the ambient temperature. The temperature sensor is connected to the heating drive circuit and transmits a sampling signal representing the ambient temperature to the heating drive circuit. The heating drive circuit can control the power supply unit to supply power to the heating electrode in response to the sampling signal.
[0014] In the second aspect, the present application also provides an electronic device, which includes a middle frame, a screen, an electronic component and a heat-conducting component; the screen cover is arranged on one side of the middle frame and forms an installation cavity with the middle frame; the electronic component includes a circuit board and a processor module arranged on the circuit board, and the circuit board is fixedly arranged on the side of the middle frame away from the screen; the heat-conducting component is arranged on the end surface of the side of the middle frame away from the screen, and the heat-conducting component extends from the middle frame to the processor module and is connected to the processor module; wherein the middle frame has a window hole, and the installation cavity is connected to the space where the circuit board is located through the window hole.
[0015] In the above setting, the heat transfer direction of the heat obtained from the processor module on the middle frame is limited by the insulation groove, so that the heat is transferred to the screen in a direction, thereby eliminating the water mist on the screen. There is no need to set up a separate heating device for the screen, reducing the defog cost of the access control equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 An exploded diagram of the access control device in the embodiment of the present application;
[0017] Figure 2 In the embodiment of this application Figure 2 A magnified image of point A;
[0018] Figure 3 A top view of a partial structure of a door access control device in an embodiment of the present application;
[0019] Figure 4 It is a cross-sectional view of the access control device in the embodiment of the present application. DETAILED DESCRIPTION
[0020] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the specific implementation manner of the present application will be clearly and completely described below in conjunction with the drawings in the implementation manner of the present application.
[0021] In this document, “exemplary” means “serving as an example, instance or illustration”, and any diagram or implementation described in this document as “exemplary” should not be interpreted as a more preferred or more advantageous technical solution.
[0022] It is known to those skilled in the art that when two components are non-electronic components or one of them is an electronic component and the other is a non-electronic component, the "connection" of the two components can be understood as a direct mechanical connection or an indirect mechanical connection through an intermediate component; when both components are electronic components, the "connection" of the two components may be understood as an electrical connection, a signal connection or a mechanical connection, wherein the signal connection may be a wired signal connection or a wireless signal connection. The specific meaning of "connection" should be understood according to the specific situation.
[0023] like Figure 1 As shown, the first embodiment of the present application provides a door access control device 100, which includes:
[0024] The shell 10 constitutes the basic frame of the access control device 100. The shell 10 includes a middle frame 11 and a rear shell 12 covering the middle frame 11. The middle frame 11 and the rear shell 12 surround and form a first installation cavity. The middle frame 11 is provided with a window hole 111 passing through the middle frame 11. The first installation cavity is connected to the outside of the first installation cavity through the window hole 111.
[0025] The screen 20 is disposed on a side of the middle frame 11 away from the rear housing 12 . A second installation cavity is formed between the screen 20 and the middle frame 11 . The second installation cavity is connected to the first installation cavity through the window hole 111 .
[0026] The electronic component 30 is disposed in the first installation cavity, and the electronic component 30 is fixedly mounted on the middle frame 11 and / or the rear shell 12; the electronic component 30 includes a circuit board 31 and a processor module 32 disposed on the circuit board 31, wherein the processor module 32 can be an independent processor or an integration of multiple independent processors, where the multiple refers to the number of independent processors being at least two.
[0027] The heat conducting component 40 is disposed in the first installation cavity. The heat conducting component 40 is fixedly mounted on the middle frame 11 and is located between the middle frame 11 and the electronic component 30. Two sides of the heat conducting component 40 are connected to the processor module 32 and the middle frame 11 respectively.
[0028] like Figure 2 As shown, the middle frame 11 further includes a heat-insulating groove 112 surrounding at least a portion of the heat-conducting assembly 40 , wherein the area surrounded by the heat-insulating groove 112 is connected to the area where the window hole 111 is located.
[0029] The heat generated by the operation of the processor module 32 is transferred to the area where the window hole 111 is located through the heat conducting component 40, and the heat is transferred to the second installation cavity through the window hole 111 to eliminate the water mist on the second installation cavity and the screen 20. In the above embodiment, the heat insulation groove 112 has the function of limiting the direction of heat transfer. The heat insulation groove 112 surrounds the heat conducting component 40 on three sides, so that the heat is transferred from the heat conducting component 40 to the window hole 111, further increasing the temperature of the screen 20, so that the anti-fog effect of the access control device 100 is better.
[0030] In the embodiment of the present disclosure, the screen 20 can be a material with good light transmittance such as a quartz glass plate, an acrylic plate (also known as PMMA or organic glass). The access control device 100 also includes display components such as a liquid crystal back panel, a backlight panel, a polarizing film, and a touch cover, and the above display components are all arranged in the second installation cavity between the screen 20 and the middle frame 11.
[0031] In the embodiments of the present disclosure, the circuit board 31 may be a hard printed circuit board (PCB) or a flexible printed circuit board (FPC). The circuit board 31 can provide mechanical support and fixation for electronic devices (such as the processor module 32 described above and the power supply unit in the embodiments below), and can realize electrical connection, wiring design or electrical insulation between electronic devices through the pads and circuit design thereon to provide the required electrical characteristics.
[0032] It should be noted that Figure 1 Although only the processor module 32 disposed toward the side of the rear shell 12 is shown in the figure, in a specific design, a corresponding processor module 32 is also disposed on the side of the circuit board 31 facing the heat conducting component 40 to achieve heat transfer between the processor module 32 and the heat conducting component 40.
[0033] like Figure 3 As shown, illustratively, the middle frame 11 is divided into a first area 113, a second area 114 and a third area 115, wherein the area where the window hole 111 is located is the first area 113, and the area surrounded by the heat insulation groove 112 is the second area 114, and the second area 114 is used to install the heat conduction component 40. In the embodiment of the present application, since the first area 113 and the second area 114 are connected, the heat in the second area 114 can be transferred to the first area 113, and transferred to the second installation cavity through the window hole 111, so as to eliminate the water mist on the second installation cavity and the screen 20.
[0034] Furthermore, at least a portion of the third region 115 is located on a side of the thermal insulation groove 112 away from the second region 114 , and the third region 115 is separated from the second region 114 by the thermal insulation groove 112 , thereby preventing heat obtained by the thermal conductive component 40 from being transferred to the third region 115 .
[0035] Through the above arrangement, directional heat transfer is achieved, thereby improving the defog efficiency of the access control device 100.
[0036] like Figure 2 and Figure 3 As shown, as an implementation, the heat conduction component 40 includes a boss 41 , which is disposed in the second area 114 and extends toward the processor module 32 .
[0037] The middle frame 11 includes a bottom wall 116 and a side wall 117. The side wall 117 is arranged around the outer edge of the bottom wall 116. The side wall 117 is provided with a plurality of mounting parts. The fasteners cooperate with the mounting parts to fasten the middle frame 11 to the rear housing 12. The bottom wall 116 is integrally formed with the boss 41. The boss 41 extends from the bottom wall 116 toward the direction of the processor module 32 so that the heat generated by the processor module 32 is transferred to the bottom wall 116 through the boss 41.
[0038] Furthermore, the heat conductive assembly further includes a heat conductive sheet 42 , which is disposed between the boss 41 and the processor module 32 , and two sides of the heat conductive sheet 42 are respectively connected to the boss 41 and the processor module 32 .
[0039] The thermal conductive sheet 42 includes at least one of the following materials: a thermal conductive pad, a thermal conductive paste, a thermal conductive gel, and a thermal conductive foam.
[0040] Since the end surface of the boss 41 facing the processor module 32 is not a smooth plane, if the boss 41 and the processor module 32 are connected in abutting manner to achieve heat transfer, the heat transfer efficiency may be low. In the embodiment of the present application, the gap between the boss 41 and the processor module 32 is filled by the heat conductive sheet 42, and the contact area between the heat conductive sheet 42 and the boss 41 and between the heat conductive sheet 42 and the processor module 32 is increased, thereby improving the heat transfer effect.
[0041] In the embodiment of the present application, the boss 41 and the middle frame 11 are both made of graphene composite materials. The high thermal conductivity of the graphene composite materials is utilized to transfer the heat generated by the processor module 32 when it is working to the screen 20 in a direction, thereby eliminating the water mist on the screen 20.
[0042] It should be noted that the boss 41 and the middle frame 11 can also be made of other materials with good thermal conductivity. The above scheme only exemplifies the use of the boss 41 and the middle frame 11 made of graphene composite materials, so that the middle frame 11 has good thermal conductivity while the overall cost of the access control device 100 is lower.
[0043] like Figure 2 As shown, in the embodiment of the present application, the access control device 100 further includes an optical component 50, at least part of which is disposed on the middle frame 11 and located in the first area 113 where the window hole 111 is located. The optical component 50 is used to acquire image information and transmit the acquired image information to the electronic component 30 in the form of an electrical signal.
[0044] Exemplarily, the optical component 50 includes a photoelectric sensor and other optical elements connected to the photoelectric sensor. The photoelectric sensor may be a CMOS photoelectric sensor (CMOS imager Sensor, abbreviated as CIS) or a CCD photoelectric sensor (charge coupled device). Other optical elements 52 include but are not limited to microlenses, polarizers, and protective films. The photoelectric sensor obtains external image information through the window hole 111.
[0045] like Figure 3 and Figure 4 As shown, as an implementation method, the access control device 100 also includes a heating component 60, which is used to increase the temperature of the heat-conducting component 40. The heating component 60 is connected to the heat-conducting component 40. The heating component 60 is also coupled to the electronic component 30, and the heating time and heating efficiency of the heating component 60 are controlled by the electronic component 30.
[0046] In the embodiment of the present application, when the ambient temperature of the access control device 100 is low, it is difficult to eliminate the water mist on the second installation cavity and the screen 20 only by the heat generated by the processor module 32 when it is working. The temperature of the heat-conducting component 40 is increased by the heating component 60, and the heat-conducting component 40 transfers the heat obtained by the heating component 60 and the processor module 32 to the second installation cavity along the window hole 111, thereby eliminating the water mist on the second installation cavity and the screen 20.
[0047] Specifically, the electronic component 30 further includes a power supply unit (not shown) for supplying power to the processor module 32. The power supply unit may be a power supply interface provided on the circuit board 31. The access control device 100 obtains energy from the mains through the power supply unit. Figure 4 As shown, the heating assembly 60 includes a heating electrode 61 and a wiring harness connected to the heating electrode 61 , and the heating electrode 61 is electrically connected to the power supply interface through the wiring harness.
[0048] In an embodiment of the present application, the heating electrode 61 is buried in the boss 41. When the heat provided by the processor module 32 is not sufficient to eliminate the water mist on the screen 20, the power supply unit supplies power to the boss 41 through the heating electrode 61, and generates heat by utilizing the special resistance properties of the boss 41 of the graphene composite material, and then transfers the heat to the second installation cavity and the screen 20, thereby enhancing the defog capability of the access control device 100.
[0049] Optionally, the heating electrode 61 can also be replaced by a heating resistor, and the heating electrode is wound around the outer edge of the boss 41 to achieve a heating effect on the boss 41 based on the thermal effect of the current.
[0050] The above-mentioned arrangement methods of burying the heating electrode 61 in the boss 41 and / or winding the heating resistor around the outer edge of the boss 41 can achieve a heating effect on the boss 41, and the boss 41 has a good heating effect in all directions.
[0051] In some examples, the access control device 100 has the ability to start at low temperature, especially when the ambient temperature is as low as -30°C or below, the access control device 100 cannot start normally. Therefore, the electronic component 30 also includes a temperature sensor (not shown) for sampling the ambient temperature. The temperature sensor is electrically connected to the processor module 32 and transmits a sampling signal representing the ambient temperature to the processor module 32. The processor module 32 can control the power supply unit to supply power to the heating electrode 61 in response to the sampling signal.
[0052] The processor module 32 includes a main control processor and a heating drive circuit. The heating drive circuit can be started in a low temperature environment. The temperature sensor is electrically connected to the heating drive circuit. The temperature sensor can transmit a sampling signal representing the ambient temperature to the heating drive circuit. The heating drive circuit determines the ambient temperature according to the sampling signal, and controls the power supply unit to energize the heating electrode 61 when the ambient temperature is lower than the set threshold. When the heating electrode 61 is energized, due to the special resistance properties of the boss 41 of the graphene composite material, the temperature of the boss 41 rises, so that the main control processor connected to the boss 41 can start normally, ensuring the normal startup of the access control device 100.
[0053] In summary, the access control device 100 provided by the embodiment disclosed in the present application is used to achieve directional heat transfer, so that the access control device 100 has a good anti-fog effect. In addition, heating the heat-conducting component 40 by the heating component 60 can meet the low-temperature startup requirements of the device when the ambient temperature is low, and further improve the anti-fog effect of the access control device 100.
[0054] The second embodiment of the present application provides an electronic device, which, in addition to the access control device in the first embodiment, may also include a display, a mobile terminal, a computer device, etc.
[0055] Specifically, the electronic device includes a middle frame, a screen, an electronic component and a heat-conducting component. The screen cover is arranged on one side of the middle frame and forms a mounting cavity with the middle frame. The electronic component includes a circuit board and a processor module arranged on the circuit board. The circuit board is fixedly arranged on the side of the middle frame away from the screen. The heat-conducting component is arranged on the end surface of the middle frame away from the screen. The heat-conducting component extends from the middle frame to the processor module and is connected to the processor module, so that the heat generated by the processor module when working is transferred to the middle frame through the heat-conducting component.
[0056] The middle frame has a window hole, and the installation cavity is connected to the space where the circuit board is located through the window hole. Heat can be transferred from the side of the middle frame away from the screen to the installation cavity along the window hole, thereby heating the screen and evaporating the water vapor on the screen.
[0057] The above arrangement realizes heat transfer through the heat-conducting component, and there is no need to set up additional heating equipment to heat the screen, thereby reducing the cost of the electronic equipment.
[0058] Optionally, the electronic device may further include a heating component, a heat-insulating groove, a temperature sensor, etc. that are the same as those in the first embodiment, which will not be described in detail here.
[0059] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of more restrictions, the elements defined by the statement "comprise one..." do not exclude the existence of other identical elements in the process, method, article or equipment including the elements.
[0060] Each embodiment in this specification is described in a related manner, and the same or similar parts between the embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.
[0061] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to this application.
Claims
1. A door access control device, characterized in that: include: The housing comprises a middle frame and a rear housing covering the middle frame, wherein the middle frame is provided with a viewing window; A screen is arranged on a side of the middle frame away from the rear housing; An electronic component is disposed between the middle frame and the rear housing, and the electronic component includes a circuit board and a processor module disposed on the circuit board; A heat conducting component is disposed on the middle frame and extends toward the processor module, wherein at least a portion of the heat conducting component is connected to the processor module; Wherein, the middle frame includes a heat insulation groove, the heat insulation groove is arranged around the heat conduction component, and the area surrounded by the heat insulation groove is connected to the area where the window hole is located.
2. The access control device according to claim 1, characterized in that: The middle frame is divided into a first area, a second area and a third area. The area where the window hole is located is the first area, the area surrounded by the heat insulation groove is the second area, the first area is connected to the second area, and the second area and the third area are separated by the heat insulation groove.
3. The access control device according to claim 1, characterized in that: The middle frame includes a bottom wall and side walls distributed around the outer edge of the bottom wall. The heat conduction component includes a boss integrally formed with the bottom wall. The boss extends from the bottom wall to the processor module.
4. The access control device according to claim 3, characterized in that: The heat-conducting assembly further comprises a heat-conducting sheet, which is arranged between the boss and the processor module, and two sides of the heat-conducting sheet are respectively connected to the boss and the processor module.
5. The access control device according to claim 4, characterized in that: The thermally conductive sheet includes at least one of the following materials: a thermally conductive pad, a thermally conductive paste, a thermally conductive gel, and a thermally conductive foam.
6. The access control device according to claim 3, characterized in that: The boss and the middle frame are both made of graphene composite materials.
7. The access control device according to claim 1, characterized in that: The access control device further comprises a heating component connected to the heat-conducting component, and the heating component is coupled to the electronic component.
8. The access control device according to claim 7, characterized in that: The heat-conducting component includes a boss arranged in the area surrounded by the heat-insulating groove, the heating component includes a heating electrode, the heating electrode is buried in the boss, the electronic component includes a power supply unit for supplying power to the processor module, and the heating electrode is electrically connected to the power supply unit.
9. The access control device according to claim 8, characterized in that: The processor module includes a heating drive circuit, and the electronic component also includes a temperature sensor for sampling the ambient temperature. The temperature sensor is electrically connected to the heating drive circuit and transmits a sampling signal representing the ambient temperature to the heating drive circuit. The heating drive circuit can control the power supply unit to supply power to the heating electrode in response to the sampling signal.
10. An electronic device, characterized in that: include: Middle shelf; A screen is covered on one side of the middle frame and forms a mounting cavity with the middle frame; An electronic component, comprising a circuit board and a processor module arranged on the circuit board, wherein the circuit board is fixedly arranged on a side of the middle frame away from the screen; A heat conducting component is disposed on an end surface of the middle frame away from the screen, the heat conducting component extends from the middle frame to the processor module and is connected to the processor module; Wherein, the middle frame has a window hole, and the installation cavity is connected with the space where the circuit board is located through the window hole.