RFID electronic tag reader capable of improving heat dissipation performance

Abstract

The utility model discloses an RFID electronic tag reader capable of improving heat dissipation, and specifically relates to the RFID electronic tag reader technology field, the RFID electronic tag reader comprises a base plate, the upper end of the base plate is fixedly connected with a lower shell, the front end of the lower shell is rotatably connected with an upper shell, the inner left side and the inner right side of the lower shell are provided with dehumidification assemblies, and the dehumidification assemblies are connected with the upper shell. Supporting bases are fixedly connected to the four corners of the lower end of the bottom plate, and a refrigeration assembly is fixedly connected into the bottom plate. According to the RFID electronic tag reader capable of improving the heat dissipation performance, the two dehumidification assemblies are utilized to dehumidify the internal environment formed by the upper shell and the lower shell in the use process; the internal environment formed by the upper shell and the lower shell is sealed by using a plurality of rubber rings and a plurality of rubber square rings, so that the internal environment formed by the upper shell and the lower shell is prevented from being affected by humid air generated in the refrigeration process of the interior formed by the upper shell and the lower shell; and external humid air is prevented from entering the interior to influence normal use of electrical components.

Description

Technical Field

[0001] The utility model relates to the technical field of RFID electronic tag readers, in particular to an RFID electronic tag reader capable of improving heat dissipation. Background Art

[0002] RFID electronic tag reader, also known as RFID reader / writer, is an important component in RFID system, and its main function is to read or write information in RFID tag. RFID technology identifies specific targets and reads related data through radio signals without establishing mechanical or optical contact between the identification system and the specific target.

[0003] Electronic tags can be classified in many ways according to different classification standards. For example, according to the reader form, there are two types: handheld RFID readers and fixed RFID readers. Fixed RFID readers are fixedly installed in a specific location and are suitable for scenarios that require long-term stable operation, such as access control systems, warehouse management, etc.

[0004] When the existing RFID electronic tag reader is in use, the internal electrical components will generate a certain amount of heat. It is necessary to control the temperature inside the electronic tag reader to prevent excessive temperature from affecting the normal operation of the internal components.

[0005] Chinese patent document CN220399947U discloses an RFID electronic tag reader capable of improving heat dissipation, which belongs to the field of RFID electronic tag readers. In order to solve the problem that the RFID electronic tag reader is in use, the air-permeable dust-proof net is used to communicate with the external air environment for heat dissipation. Due to the continuous operation of internal components such as the UHF radio frequency module, a lot of heat is generated. The heat dissipation effect is not ideal through natural heat dissipation through the outside air, which easily causes the RFID electronic tag reader to heat up. The above application can dissipate heat for the UHF radio frequency module through the heat dissipation fins set, and at the same time, the motor is turned on to drive the fan to rotate, thereby accelerating the air circulation inside the shell, which can take away the heat on the heat dissipation fins and effectively reduce the temperature. The shell adopts a semi-enclosed aluminum shell and a customized acrylic panel, which not only greatly improves the aesthetics of the device itself, but also increases the resistance to electromagnetic interference and heat dissipation. However, the above patent document still has the following defects during use:

[0006] During use, the above patent document utilizes heat sink fins to dissipate heat for the UHF radio frequency module 1. However, if the humidity in the operating environment is high, the humidity in the air will enter the interior of the housing through the breathable member. The heat sink fins are usually made of metal materials and are easily corroded when exposed to a humid environment for a long time, affecting the heat dissipation effect. In addition, the humid air inside the housing will also affect the normal use and service life of other electrical components. Utility Model Content

[0007] The main purpose of the utility model is to provide an RFID electronic tag reader capable of improving heat dissipation, which can effectively solve the problem of inconvenience in dissipating heat inside the reader while keeping the internal environment dry.

[0008] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0009] An RFID electronic tag reader capable of improving heat dissipation comprises a bottom plate, the upper end of the bottom plate is fixedly connected to a lower shell, the front end of the lower shell is rotatably connected to an upper shell, a dehumidification assembly is arranged on the left side and the right side of the lower shell, the four corners of the lower end of the bottom plate are fixedly connected to support seats, the left and right ends of the upper shell and the lower shell are fixedly connected to two front-to-back symmetrical buckles, and a refrigeration assembly is fixedly connected to the inside of the bottom plate.

[0010] Preferably, the lower left end and the lower right end of the upper shell are both rotatably connected with a convex plate.

[0011] Preferably, the dehumidification assembly includes a ventilation box, a ventilation plate is slidably connected to the upper inner surface of the ventilation box, a groove is formed at one end of the ventilation box away from the convex plate, a cross bar is fixedly connected to the upper inner surface of the groove, and a desiccant is installed inside the ventilation box.

[0012] Preferably, the ventilation box is slidably connected to the lower shell.

[0013] Preferably, a plurality of rubber circles and a plurality of rubber square rings are respectively fixedly connected to the left and right parts of the rear sides of the ends of the lower shell and the upper shell that are close to each other.

[0014] Preferably, the refrigeration assembly comprises a fixed shell, a fixed ring is fixedly connected to the lower end of the fixed shell, a fan is fixedly connected to the inner surface of the fixed ring, and a semiconductor refrigeration sheet is fixedly connected to the upper inner surface of the fixed shell.

[0015] Preferably, the fixed shell is fixedly connected to the base plate.

[0016] Preferably, the horizontal heights of the lower ends of the four support seats are all lower than the horizontal height of the lower end of the fixed shell by a certain distance.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] 1. During use, the utility model utilizes two dehumidification components to dehumidify the internal environment of the upper shell and the lower shell, so as to avoid the generation of humid air during the internal refrigeration of the upper shell and the lower shell to affect the use of the internal electrical components. At the same time, a plurality of rubber circles and a plurality of rubber square rings are used to seal the internal environment of the upper shell and the lower shell, so as to avoid the external humid air from entering the interior and affecting the normal use of the electrical components.

[0019] 2. During use of the utility model, the convex plates on the left and right sides are used to fix the position between the ventilation box and the lower shell to prevent the dehumidification component from slipping out of the lower shell during transportation or movement. At the same time, the convex plates on both sides can be rotated to release the fixation of the ventilation box and replace the desiccant inside it to ensure that the internal environment composed of the upper shell and the lower shell is dry for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the overall structural state of the utility model;

[0022] Figure 3 For the utility model Figure 2 The enlarged schematic diagram at A in the middle;

[0023] Figure 4 It is a schematic diagram of the overall structural state of the utility model;

[0024] Figure 5 For the utility model Figure 4 The enlarged schematic diagram of point B in the middle;

[0025] Figure 6 It is a schematic cross-sectional view of the overall structure of the refrigeration component of the present utility model.

[0026] In the figure: 1, upper shell; 2, lower shell; 3, support seat; 4, dehumidification component; 5, buckle; 6, bottom plate; 7, refrigeration component; 11, convex plate; 41, ventilation box; 42, groove; 43, cross bar; 44, ventilation plate; 21, rubber circle; 22, rubber square ring; 71, fixed shell; 72, fixed ring; 73, fan; 74, semiconductor cooling plate. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0028] like Figure 1 and Figure 6As shown, an RFID electronic tag reader capable of improving heat dissipation comprises a base plate 6, the upper end of the base plate 6 is fixedly connected to a lower shell 2, the front end of the lower shell 2 is rotatably connected to an upper shell 1, a dehumidification assembly 4 is arranged on the left side and the right side inside the lower shell 2, the four corners of the lower end of the base plate 6 are fixedly connected to a support seat 3, the left and right ends of the upper shell 1 and the lower shell 2 are fixedly connected to two front-to-back symmetrical buckles 5, and a refrigeration assembly 7 is fixedly connected inside the base plate 6.

[0029] During the specific implementation of this scheme, the device is first placed on a carrier at the place of use and supported by four support seats 3. The refrigeration component 7 is then started to cool the environment inside the lower shell 2 to prevent the internal temperature from being too high and affecting the normal operation of the electrical components. The two dehumidification components 4 inside the lower shell 2 are used to dry the internal environment to prevent the generation of air with excessive humidity during the cooling process and affecting the electrical components. When the desiccant inside the dehumidification component 4 needs to be replaced, the dehumidification component 4 is released and the dehumidification component 4 is pulled out of the lower shell 2.

[0030] In this solution, the lower shell 2 is internally installed with electrical components such as antenna, radio frequency module, read / write module and control mainboard as well as some auxiliary components, which are used to write information in the RFID tag, identify specific targets through radio signals and read related data.

[0031] The cooling process of the semiconductor cooling plate 74 in this solution is mainly based on the Peltier effect and the working principle of the thermocouple.

[0032] When the DC power supply provides electrical energy to the semiconductor refrigeration sheet 74, the current passes through the interface of the P-type and N-type materials, causing the electrons to transition from the high energy level to the low energy level, releasing heat; conversely, when the electrons transition from the low energy level to the high energy level, they absorb heat. In this way, heat is generated at one end of the refrigeration sheet (usually the P-type material end), while the other end (the N-type material end) absorbs heat to achieve a cooling effect. By switching the direction of the current, the flow direction of the electrons in the material can be changed, thereby changing the thermal balance of the two materials and achieving the cooling or heating function of the semiconductor refrigeration sheet 74. In addition, the semiconductor refrigeration sheet 74 also uses the characteristics of the thermocouple for temperature control. When there is a temperature difference between the two ends of the refrigeration sheet, a Seebeck voltage is generated, which in turn forms a current. This current drives the flow of electrons, causing the temperature difference between the two ends of the refrigeration sheet to gradually decrease, thereby achieving stable temperature control.

[0033] In addition, the desiccant mentioned in this solution dries the air by absorbing moisture in the air. Through its special physical or chemical properties, it can effectively absorb and remove moisture in the air, thereby achieving air drying. It should be noted that different types of desiccants have their specific use environments and conditions. Therefore, in actual applications, it is necessary to select a suitable desiccant according to specific needs and conditions.

[0034] The buckle 5 mentioned above is a lock buckle used to fix objects in the prior art. When the upper shell 1 and the lower shell 2 are closed, the four buckles 5 are used to make the closed state at this time common. When the opening on the upper part of the lower shell 2 is to be opened, the fixation of the four buckles 5 can be manually released.

[0035] Specifically, in order to prevent the internal heat of the upper shell 1 and the lower shell 2 from being too high, refer to Figure 6 The refrigeration assembly 7 includes a fixed shell 71, a fixed ring 72 is fixedly connected to the lower end of the fixed shell 71, a fan 73 is fixedly connected to the inner surface of the fixed ring 72, and a semiconductor refrigeration sheet 74 is fixedly connected to the upper inner surface of the fixed shell 71;

[0036] For further information, see Figure 6 , the fixed shell 71 is fixedly connected to the bottom plate 6;

[0037] For further information, see Figure 6 , the horizontal heights of the lower ends of the four support seats 3 are all lower than the horizontal height of the lower end of the fixed shell 71 by a certain distance;

[0038] The fan 73 mentioned above mainly relies on the wind flow generated by the fan 73 to accelerate the heat exchange between the surface of the object and the surrounding air, thereby taking away the heat and achieving the effect of cooling the hot end of the semiconductor cooling plate 74.

[0039] It can be seen that, first, the semiconductor cooling sheet 74 is installed, and the semiconductor cooling sheet 74 is used to cool the lower end of the lower shell 2. When the semiconductor cooling sheet 74 is powered on, the current passes through the P-type and N-type semiconductor materials, causing electrons to flow in the materials. In this process, heat will be transferred from the hot end to the cold end, forming a temperature difference. However, if the heat at the hot end cannot be dissipated in time, then this temperature difference will be reduced, resulting in a weakened cooling effect at the cold end. At this time, the fan 73 can be started to dissipate the heat at the hot end of the semiconductor cooling sheet 74, which can effectively maintain or even increase this temperature difference, thereby improving the cooling efficiency.

[0040] Specifically, in order to keep the internal environment composed of the upper shell 1 and the lower shell 2 dry at all times, the dehumidification component 4 includes a ventilation box 41, see Figure 2 , Figure 3 , Figure 4 and Figure 5 A ventilation plate 44 is slidably connected to the upper inner surface of the ventilation box 41, a groove 42 is provided at one end of the ventilation box 41 away from the convex plate 11, a cross bar 43 is fixedly connected to the upper inner surface of the groove 42, and a desiccant is installed inside the ventilation box 41;

[0041] For further information, see Figure 2 , the ventilation box 41 is slidably connected to the lower shell 2;

[0042] For further information, see Figure 3 , the lower left end and the lower right end of the upper shell 1 are both rotatably connected with a convex plate 11;

[0043] For further information, see Figure 5 The left and right parts of the rear sides of the ends of the lower shell 2 and the upper shell 1 close to each other are respectively fixedly connected with a plurality of rubber circles 21 and a plurality of rubber square circles 22;

[0044] It can be seen that the initial state of the protruding plate 11 is that the narrower side is downward, so as to fix the position of the ventilation box 41. When the desiccant inside the ventilation box 41 needs to be replaced, the protruding plate 11 can be rotated so that the narrower side of the protruding plate 11 is away from the ventilation box 41, and the fixation of the ventilation box 41 is released. Subsequently, the cross bar 43 is pulled toward the side away from the upper shell 1 to pull the ventilation box 41 out of the lower shell 2, and then the ventilation plate 44 is slid toward the side close to the upper shell 1 to pour out the used desiccant inside the ventilation box 41, and then the new desiccant is put in, and then the ventilation plate 44 is slid to close the upper entrance of the ventilation box 41, and then the cross bar 43 is pushed to reset the ventilation box 41. After resetting, the protruding plate 11 is rotated so that the narrower side is placed on the outside of the ventilation box 41, and the position of the ventilation box 41 in the lower shell 2 is limited.

[0045] In addition, when the upper shell 1 and the lower shell 2 are closed, the wires and plugs connected to the electrical components inside the lower shell 2 are connected to the internal electrical components through the rubber ring 21 and the rubber square ring 22. The rubber ring 21 and the rubber square ring 22 are used to clamp the wires or plugs so as to seal the environment inside the upper shell 1 and the lower shell 2 to prevent external humid air or dust from entering and affecting the normal use and service life of the electrical components.

[0046] It should be noted that the specific installation method, circuit connection method and control method of the fan 73 and the semiconductor cooling plate 74 used in the present invention are all conventional designs, and the present invention will not elaborate on them in detail.

[0047] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An RFID electronic tag reader capable of improving heat dissipation, comprising a bottom plate (6), characterized in that: The upper end of the bottom plate (6) is fixedly connected to the lower shell (2), the front end of the lower shell (2) is rotatably connected to the upper shell (1), the left side and the right side of the lower shell (2) are both provided with dehumidification components (4), the four corners of the lower end of the bottom plate (6) are fixedly connected to support seats (3), the left and right ends of the upper shell (1) and the lower shell (2) are both fixedly connected to two front-to-back symmetrical buckles (5), and the bottom plate (6) is fixedly connected to a refrigeration component (7).

2. The RFID electronic tag reader capable of improving heat dissipation according to claim 1, characterized in that: The lower left end and the lower right end of the upper shell (1) are both rotatably connected with a convex plate (11).

3. The RFID electronic tag reader capable of improving heat dissipation according to claim 2, characterized in that: The dehumidification component (4) comprises a ventilation box (41), the upper part of the inner surface of the ventilation box (41) is slidably connected to a ventilation plate (44), a groove (42) is formed at one end of the ventilation box (41) away from the convex plate (11), a cross bar (43) is fixedly connected to the upper part of the inner surface of the groove (42), and a desiccant is installed inside the ventilation box (41).

4. The RFID electronic tag reader capable of improving heat dissipation according to claim 3, characterized in that: The ventilation box (41) is slidably connected to the lower shell (2).

5. The RFID electronic tag reader capable of improving heat dissipation according to claim 1, characterized in that: A plurality of rubber rings (21) and a plurality of rubber square rings (22) are respectively fixedly connected to the left and right parts of the rear sides of the ends of the lower shell (2) and the upper shell (1) that are close to each other.

6. The RFID electronic tag reader capable of improving heat dissipation according to claim 1, characterized in that: The refrigeration assembly (7) comprises a fixed shell (71), a fixed ring (72) is fixedly connected to the lower end of the fixed shell (71), a fan (73) is fixedly connected to the inner surface of the fixed ring (72), and a semiconductor refrigeration plate (74) is fixedly connected to the upper inner surface of the fixed shell (71).

7. The RFID electronic tag reader capable of improving heat dissipation according to claim 6, characterized in that: The fixed shell (71) is fixedly connected to the bottom plate (6).

8. The RFID electronic tag reader capable of improving heat dissipation according to claim 6, characterized in that: The horizontal heights of the lower ends of the four support seats (3) are all lower than the horizontal height of the lower end of the fixed shell (71) by a certain distance.

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