Signal generator

Abstract

The utility model discloses a signal generator, which belongs to the technical field of photoelectric detection, and comprises a power supply module, a signal module and a heat dissipation module, a TEC (Thermoelectric Cooler) heat dissipation module attached to the signal module is arranged in the heat dissipation module so as to absorb heat generated by the signal module through close contact with the signal module; the heat is dissipated to the surrounding environment through the cooling fins and the fan, so that rapid heat dissipation of the signal module is realized, and the heat dissipation requirement of the signal generator under high temperature and high humidity is met; meanwhile, the signal module and the power supply module are separately arranged in the stacked box bodies, so that function partitioning is realized, and signal plate modules in the signal module can be plugged and pulled relative to the box bodies, so that the requirement of a user for replacement according to needs is met, debugging and maintenance of the device are facilitated, and the use efficiency and convenience of the device are improved.

Description

Technical Field

[0001] This utility model belongs to the field of photoelectric detection technology, specifically relating to a signal generator applicable to high temperature and high humidity environments. Background Technology

[0002] A signal generator is a device used to switch different colors and patterns on a display screen, and is widely used in the production and testing of electronic equipment. Existing signal generators typically employ a multi-layered circuit board stack design, with each layer connected by wires or copper wires. However, existing signal generators still have the following problems:

[0003] 1) When the equipment is used in a high temperature and high humidity environment, the existing heat dissipation device cannot meet the heat dissipation requirements and it is difficult to effectively control the temperature rise of the circuit board, resulting in a decrease in equipment performance or even damage.

[0004] 2) The circuit board layout lacks optimized design, and the arrangement of various functional modules is relatively scattered. This not only reduces the overall aesthetics of the equipment, but may also cause additional electromagnetic interference due to messy wiring, affecting the stability and reliability of the equipment signal. The stacked circuit boards also bring trouble to the subsequent circuit board debugging and maintenance.

[0005] 3) Because it needs to support a variety of application environments, it generally requires built-in or external expansion boards, and existing devices cannot flexibly meet these requirements. Utility Model Content

[0006] In view of one or more of the above-mentioned defects or improvement needs of the prior art, the present invention provides a signal generator that can meet the heat dissipation requirements of the device under high temperature and high humidity, and realize the functional partitioning of the device, which facilitates management and maintenance.

[0007] To achieve the above objectives, this utility model provides a signal generator, which includes a power supply module, a signal module, and a heat dissipation module;

[0008] The signal module includes a backplane and multiple signal board modules; each of the signal board modules is plugged into the backplane.

[0009] The power module includes a power board module, which is electrically connected to the backplane via a connector;

[0010] The heat dissipation module includes a TEC heat dissipation module, a heat sink, and multiple fans; one end of the TEC heat dissipation module is attached to the top of the signal module, and the other end is attached to the heat sink, and the multiple fans are arranged on the sides of the power module and the signal module.

[0011] As a further improvement of this utility model, the heat sink includes a base and a plurality of heat dissipation sheets connected to the base. The base is detachably and fixedly connected to the signal module. The heat dissipation sheets extend along the X direction, and the plurality of heat dissipation sheets are spaced apart along the Y direction.

[0012] As a further improvement of this utility model, a groove is provided on the side of the heat sink away from the TEC heat dissipation module, and a turbine fan is provided in the groove. The turbine fan draws in air along the Z direction and discharges air along the XY direction. The turbine fan is arranged in a corresponding manner to the TEC heat dissipation module along the Z direction, so as to accelerate the heat dissipation of the heat sink through the turbine fan.

[0013] A removable top cover is provided on the side of the groove opposite to the TEC heat dissipation module to encapsulate the turbine fan within the groove.

[0014] As a further improvement of this utility model, it also includes a first box and a second box stacked and detachably connected along the Z direction, wherein the signal module is disposed in the first box and the power module is disposed in the second box;

[0015] The backplate is arranged parallel to the Z direction, and the signal board modules are stacked along the Z direction and are designed to be retractable relative to the first housing along the Y direction.

[0016] As a further improvement of this utility model, two signal modules are spaced apart along the X direction in the first box, and two power modules are spaced apart along the X direction for each of the signal modules in the second box, and the two heat sinks corresponding to the two signal modules are spliced ​​together along the X direction.

[0017] As a further improvement of this utility model, the first housing and the second housing are respectively provided with the fan at both ends along the X direction, and the fan is provided between the two power modules and between the two signal modules, and the air inlet and outlet directions of the multiple fans are set in the same way.

[0018] As a further improvement of this utility model, the signal board module includes a signal board and a first panel; the signal board is inserted into the back plate, the first panel is fixedly connected to the end of the signal board away from the back plate, and is detachably fixedly connected to the first housing.

[0019] As a further improvement of this utility model, the signal board is divided into a core signal board and at least one replaceable signal board. The core signal board is used to generate test image signals, and the replaceable signal board is used to perform extended conversion of test image signals.

[0020] The core signal board is located inside the signal board module at the top layer, the TEC heat dissipation module is attached and fixed to the core signal board, and the heat sink is fixed to the core signal board at intervals by studs.

[0021] As a further improvement of this utility model, the signal board module also includes a pull-out aid for assisting in the insertion and removal of the core signal board from the backplane.

[0022] As a further improvement of this utility model, the power module includes a power generation board, a driver board, a DC-DC power board and a second panel. The power generation board is connected to the connector. The driver board and the DC-DC power board are arranged on the same layer and stacked on top of the power generation board. The second panel is fixedly arranged on the side of the power generation board and is detachably and fixedly connected to the second housing.

[0023] And / or,

[0024] The first housing includes a first bottom plate, three first side plates and two top plates. The first bottom plate extends along the X direction. The three first side plates are fixed to the first bottom plate and form an opening on one side of the first housing. The two top plates extend along the X direction and are detachably fixed to the side of the first side plate away from the first bottom plate at intervals along the Y direction. The heat sink is sandwiched in the interval.

[0025] The aforementioned improved technical features can be combined with each other as long as they do not conflict with each other.

[0026] In summary, the beneficial effects of the above-described technical solutions conceived by this utility model compared with the prior art include:

[0027] (1) The signal generator of this utility model provides a TEC heat dissipation module attached to the signal module in the heat dissipation module so as to absorb the heat generated by the signal module through close contact with the signal module, and then dissipate the heat to the surrounding environment through the heat sink and fan, thereby achieving rapid heat dissipation of the signal module and meeting the heat dissipation requirements of the signal generator under high temperature and high humidity.

[0028] (2) The signal generator of this utility model separates the signal module and the power module into the first and second boxes arranged in a stack, so as to realize the zone management of the signal generator according to the function; by setting each signal board module to be stacked along the Z direction and having a pull-out design relative to the first box, it is convenient to replace each signal board module according to the user's needs, and to facilitate the user to debug and maintain each module.

[0029] (3) The signal generator of this utility model satisfies the user's need to detect multiple devices at the same time by setting multiple signal modules in the first box and correspondingly setting multiple power modules in the second box. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the overall structure of the signal generator in an embodiment of this utility model;

[0032] Figure 2 This is a schematic diagram of the assembly structure of the power module and signal module in an embodiment of this utility model;

[0033] Figure 3 This is an exploded view of the signal module structure in an embodiment of this utility model;

[0034] Figure 4 This is a schematic diagram of the heat dissipation module in an embodiment of this utility model;

[0035] Figure 5 This is an exploded view of the power module structure in an embodiment of this utility model.

[0036] Figure 6 This is a schematic diagram of the structure of the pull-out aid in an embodiment of this utility model.

[0037] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 1. First housing; 11. First bottom plate; 12. First side plate; 13. Top plate; 14. First bracket; 2. Second housing; 21. Second bottom plate; 22. Second side plate; 23. Cover plate; 24. Second bracket; 3. Signal module; 31. Back plate; 32. Back plate bracket; 33. Core signal board; 34. Replaceable signal board; 35. First panel; 36. Pull-out aid; 37. Guide rail; 38. Guide rail fixing bracket; 4. Power module; 41. Power generation board; 42. Driver board; 43. DC-DC power board; 44. Second panel; 45. Support column; 5. Connector; 6. Heat dissipation module; 61. TEC heat dissipation module; 62. Heat sink; 621. Recess; 63. Turbine fan; 64. Top cover; 65. Fan; 7. Bottom bracket; 8. Positioning column. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model. Furthermore, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0039] In the description of this utility model, it should be understood that, unless otherwise explicitly specified and limited, the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0040] Furthermore, unless otherwise expressly specified and limited, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise expressly and specifically limited.

[0041] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0043] Example:

[0044] Please see Figures 1-6 In a preferred embodiment of this utility model, the signal generator includes a housing and a signal module 3, a power module 4, and a heat dissipation module 6 disposed within the housing. The power module 4 provides power to the signal module 3, the signal module 3 tests the product, and the heat dissipation module 6 dissipates heat from both the power module 4 and the signal module 3.

[0045] Specifically, such as Figure 1 As shown, in the preferred embodiment, the enclosure includes a first enclosure 1 and a second enclosure 2, wherein the signal module 3 is disposed in the first enclosure 1 and includes a backplate 31 and multiple signal board modules, and each signal board module is plugged into the backplate 31.

[0046] Specifically, the backplate 31 is fixed inside the first housing 1 by the backplate bracket 32 ​​and is arranged parallel to the Z direction. Multiple signal board modules are stacked in the first housing 1 along the Z direction, and multiple plugs are provided on the backplate 31 at intervals along the Z direction so that each signal board module can be plugged into the backplate 31 through the plugs.

[0047] Preferably, such as Figure 2 As shown, multiple signal board modules are designed to be pulled out along the Y direction relative to the first housing 1, so as to facilitate users to debug and repair the signal board modules.

[0048] More specifically, the signal board module includes a signal board and a first panel 35. The signal board is plugged into a back plate 31. The first panel 35 is fixedly connected to the end of the signal board away from the back plate 31. The first panel 35 is detachably fixed to the first housing 1 by a hand-tightening screw, so as to encapsulate the signal board in the first housing 1 through the first panel 35.

[0049] Furthermore, the signal board includes a core signal board 33 and at least one replaceable signal board 34. The core signal board 33 and the replaceable signal board 34 are respectively disposed in each signal board module and plugged into the backplane 31. The core signal board 33 generates test image signals, and the replaceable signal board 34 performs expansion and conversion of the test image signals. At the same time, combined with the pull-out design of each signal board module and the first housing 1, the signal module 3 can be divided into multiple plug-in modules according to different functions, which makes it convenient for users to replace them according to their needs, such as replacing the old core signal board 33 and the replaceable signal board 34, or replacing the replaceable signal board 34 according to the output signal requirements.

[0050] like Figure 2 In the preferred embodiment shown, signal module 3 contains three signal board modules. The top-level signal board module contains the core signal board 33, which is used to process and output LVDS signals. The middle-level signal board module also contains replaceable signal boards 34, which are used to output DP signals. The bottom-level signal board module also contains replaceable signal boards 34, which are used to output MIPI signals. In actual manufacturing, the corresponding replaceable signal board 34 can be selected according to the output signal required by the user.

[0051] Preferably, such as Figure 3 As shown, since there are many connectors between the core signal board 33 and the backplane 31, manual insertion and removal are difficult. Therefore, it is preferable to install a pull-out aid 36 within the signal board module. This aid assists in connecting and disconnecting the core signal board 33 and the backplane 31, allowing for direct replacement of the signal module without altering the main structure, thus improving the efficiency of equipment installation and subsequent maintenance. Figure 3 In the preferred embodiment shown, pull-out aids 36 are symmetrically arranged at both ends of the first panel 35.

[0052] Preferably, such as Figure 6 As shown, the pull-out aid 36 is rotatably connected to the first panel 35, and a rotating groove is provided on the first panel 35 corresponding to the pull-out aid 36. One end of the pull-out aid 36 passes through the rotating groove and exits the first housing 1, and the pull-out aid 36 can rotate along the rotating groove. At the same time, the other end of the pull-out aid 36 is set as F-shaped, and a stop block is fixedly set on the first housing 1. The stop block is locked in the F-shaped pull-out aid 36, so that when the pull-out aid 36 is pulled out, the F end of the pull-out aid 36 abuts against the stop block and pushes the first panel 35 inward or outward with force, thereby realizing the insertion and removal between the core signal board 33 and the back plate 31.

[0053] In another specific embodiment of this utility model, the puller is rotatably connected to the first panel 35, and a rotating groove is provided on the first panel 35 corresponding to the puller. One end of the puller passes through the rotating groove and exits the first housing 1, and the puller can rotate along the rotating groove. At the same time, a blocking member is provided on the side of the puller body away from the first side plate 12, and a stop block is fixedly provided on the first side plate 12 corresponding to the blocking member. The blocking member can abut against the side of the stop block away from the first panel 35 to push the first panel 35 outward with force.

[0054] Preferably, to facilitate the pull-out installation and insertion guidance of the signal board module, a guide rail 37 is provided on at least one side of the signal board module. The guide rail 37 extends along the Y-axis and is fixedly mounted on the first base plate 11 by a guide rail fixing bracket 38. Simultaneously, the side of the signal board module is slidably inserted into the guide rail 37 to achieve a pull-out design of the signal board module along the Y-axis. Figure 4 In the preferred embodiment shown, guide rails 37 are provided on both sides of the signal board module, and multiple guide rails 37 on each side are arranged vertically at intervals on the guide rail fixing frame 38.

[0055] Furthermore, in the preferred embodiment, the power module 4 is disposed inside the second housing 2, and the second housing 2 is stacked below the first housing 1 along the Z direction and is detachably connected to the first housing 1.

[0056] Specifically, such as Figure 5 As shown, the power module 4 includes a power board module and a second panel 44; wherein, the power board module is fixedly installed in the second housing 2 and is connected to the back panel 31 in the signal module 3 through the connector 5 to provide power to the signal module 3.

[0057] More specifically, the power board module includes a power generation board 41, a driver board 42, a DC-DC power board 43, and a second panel 44. The driver board 42 and the DC-DC power board 43 are arranged on the same layer and are fixedly connected to the power generation board 41 by studs. A connector 5 is connected and installed on the power generation board 41. The connector 5 passes through the cover plate 23 and is inserted into the signal module 3 to output adjustable power through the power generation board 41, output low ripple adjustable power with protection and monitoring through the driver board 42, and output constant current power through the DC-DC power board 43.

[0058] Meanwhile, the second panel 44 is fixedly connected to one side of the power generation board 41, and the second panel 44 is detachably fixed to the second housing 2 so as to encapsulate the power board module in the second housing 2 through the second panel 44.

[0059] Preferably, a plurality of support columns 45 are provided on the opposite sides of the second base plate 21 and the cover plate 23 to support the upper and lower sides of the power board module.

[0060] Further, in the preferred embodiment, the heat dissipation module 6 includes a TEC heat dissipation module 61, a heat sink 62, and a fan 65. One end of the TEC heat dissipation module 61 is attached and fixed to the signal module 3, specifically to the core signal board 33, to dissipate heat from the core signal board 33. The other end is attached to the heat sink 62, which is fixed to the core signal board 33 at intervals by studs to accelerate the heat dissipation of the TEC heat dissipation module 61. The fan 65 is disposed inside the first housing 1 and the second housing 2, and is located on both sides of the signal module 3 and the power module 4 to accelerate airflow within the housing and further dissipate heat from the signal module 3 and the power module 4.

[0061] More specifically, the heat sink 62 includes a base and a plurality of heat sinks, wherein the heat sinks extend along the X direction and the plurality of heat sinks are spaced apart along the Y direction; at the same time, the plurality of heat sinks are connected and disposed on the base so as to connect the plurality of heat sinks together through the base, and the heat sinks are detachably and fixedly connected to the signal module 3 through the base.

[0062] Preferably, such as Figure 4 As shown, a groove 621 is provided on the side of the heat sink 62 facing away from the TEC cooling module 61, and a turbine fan 63 is arranged in the groove 621. The turbine fan 63 draws in air in the Z direction and discharges air in the XY direction, thereby accelerating the airflow speed in the channels between the heat sinks by blowing air into them, thus accelerating the heat dissipation of the heat sink 62. Since the temperature of the heat sink in the area in direct contact with the TEC cooling module is relatively high, it is preferable that the turbine fan 63 is arranged corresponding to the TEC cooling module in the Z direction.

[0063] Meanwhile, a top cover 64 is provided on the side of the heat sink 62 facing away from the signal module 3, corresponding to the groove 621, and multiple heat dissipation holes are provided on the top cover 64 to encapsulate the turbine fan 63 in the groove 621.

[0064] Of course, in actual setup, if the space available for the device is not limited, the turbine fan 63 in the groove 621 can be replaced with a regular fan and set to allow air to enter and exit in the X direction.

[0065] Preferably, multiple signal modules 3 are spaced apart along the X direction inside the first housing 1, and multiple power modules 4 are spaced apart corresponding to the signal modules 3 inside the second housing 2. Each power module 4 and signal module 3 is connected via a connector 5 to meet the requirement of the signal generator simultaneously detecting multiple devices; correspondingly, heat sinks 62 are spliced ​​along the X direction on the top of the multiple signal modules 3. Figures 1-6 As shown, two signal modules 3 are installed in the first housing 1, and two power modules 4 are installed in the second housing 2.

[0066] In actual setup, multiple rows of fans 65 are installed in the X-direction spaced channels and on the sides of each signal module 3 and each power module 4. Each row of fans 65 includes at least one fan 65, and all fans 65 are set to the same airflow direction to dissipate heat from each signal module 3 and each power module 4.

[0067] Furthermore, such as Figure 3 As shown, in the preferred embodiment, the first housing 1 includes a first base plate 11, three first side plates 12, and two top plates 13. The first base plate 11 extends along the X direction, and the three first side plates 12 are fixed around the first base plate 11 and form an opening on one side of the first housing 1 for the pull-out installation of each signal board module. The two top plates 13 extend along the X direction and are detachably fixed along the Y direction on the side of the first side plate 12 away from the first base plate 11. A heat sink 62 is sandwiched between the two top plates 13, thereby encapsulating the top of the first housing 1 through the two top plates 13 and the heat sink 62.

[0068] Preferably, a plurality of holes for heat dissipation are provided on at least one first side plate 12 corresponding to the fan 65 to accelerate heat dissipation inside the first housing 1.

[0069] Furthermore, such as Figure 5 As shown, in the preferred embodiment, the second box 2 includes a second bottom plate 21, three second side plates 22, and a cover plate 23. The second bottom plate 21 and the cover plate 23 are both square plates and are arranged parallel to each other vertically. The three second side plates 22 are arranged sequentially between the second bottom plate 21 and the cover plate 23 and are fixedly connected to the second bottom plate 21 and the cover plate 23, so that the second bottom plate 21, the three second side plates 22, and the cover plate 23 are assembled to form a box structure with an opening on one side.

[0070] Preferably, a plurality of holes for heat dissipation are provided on at least one second side plate 22 corresponding to the fan 65 to accelerate heat dissipation inside the second housing 2.

[0071] Preferably, a first bracket 14 is provided on the first housing 1, and a second bracket 24 is provided on the second housing 2, wherein the first bracket 14 and the second bracket 24 can be locked together vertically to achieve vertical insertion connection between the first housing 1 and the second housing 2.

[0072] Preferably, a positioning component is also provided between the signal module 3 and the power module 4 to guide the vertical assembly of the first housing 1 and the second housing 2.

[0073] Preferably, the positioning component includes a plurality of spaced positioning posts 8, one end of which is fixedly mounted on the second base plate 21. Positioning holes that match the positioning posts 8 are provided on the first base plate 11. By inserting the positioning posts 8 into the corresponding positioning holes, the vertical alignment of the first housing 1 and the second housing 2 is guided and positioned. Figure 2 As shown, a positioning post 8 is set at each of the four corners of the second base plate 21 to ensure the consistency of positioning through multi-point positioning.

[0074] Preferably, bottom supports 7 are provided on both sides of the second base plate 21 to support the entire signal generator.

[0075] When installing signal module 3, the first base plate 11 can be used as a base. First, the back plate 31 is fixed on the back plate bracket 32, and then the back plate bracket 32 ​​is fixedly installed on the first base plate 11. The fan 65 is fixed on both sides of the first housing 1 and in the middle of the two signal modules 3. Each guide rail 37 is first installed on the guide rail fixing bracket 38, and then the guide rail fixing bracket 38 is fixed on the first base plate 11. The puller 36 is first fixed on the first panel 35 with stepped screws, and then the first panel 35 is fixed to the core signal board 33. After fixing the TEC heat dissipation module 61 and heat sink 62 on the core signal board 33, the signal board module is inserted into the guide rail slot, and the puller 36 is used to help the core signal board 33 connect to the back plate 31. The replaceable signal board 34 is fixed together with the first panel 35 and inserted into the back plate 31 through the guide rail 37. Each first panel 35 is fixed to the first housing 1 by hand-tightening screws.

[0076] When installing the power module 4, the power generation board 41 can be fixedly connected to the drive board 42 and the DC-DC power board 43 by studs, and the second panel 44 can be fixedly connected to the power generation board 41. Then, the power board module and the fan 65 are installed on the cover plate 23, the second base plate 21 and other parts are installed, and then the second housing 2 is flipped over as a whole.

[0077] After the signal module 3 and the power module 4 are assembled, they are connected by interlocking with each other using the positioning post 8 between the two boxes as a guide, and the two boxes are locked together using the first bracket 14 and the second bracket 24.

[0078] Accordingly, when the signal board module needs to be replaced, the hand screws on both sides of the first panel 35 can be loosened to pull out the replaceable signal board 34, and the core signal board 33 can be pulled out by using the puller 36.

[0079] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A signal generator, characterized in that, Includes power supply module, signal module and heat dissipation module; The signal module includes a backplane and multiple signal board modules; each of the signal board modules is plugged into the backplane. The power module includes a power board module, which is electrically connected to the backplane via a connector; The heat dissipation module includes a TEC heat dissipation module, a heat sink, and multiple fans; one end of the TEC heat dissipation module is attached to the top of the signal module, and the other end is attached to the heat sink, and the multiple fans are arranged on the sides of the power module and the signal module.

2. The signal generator according to claim 1, characterized in that, The heat sink includes a base and a plurality of heat dissipation fins connected to the base. The base is detachably and fixedly connected to the signal module. The heat dissipation fins extend along the X direction, and the plurality of heat dissipation fins are spaced apart along the Y direction.

3. The signal generator according to claim 2, characterized in that, The heat sink has a groove on the side away from the TEC heat dissipation module. A turbine fan is installed in the groove. The turbine fan draws in air in the Z direction and exhausts air in the XY direction. The turbine fan is positioned in relation to the TEC heat dissipation module in the Z direction to accelerate the heat dissipation of the heat sink. A removable top cover is provided on the side of the groove opposite to the TEC heat dissipation module to encapsulate the turbine fan within the groove.

4. The signal generator according to any one of claims 1 to 3, characterized in that, It also includes a first housing and a second housing stacked along the Z direction and detachably connected, the signal module being disposed in the first housing and the power module being disposed in the second housing; The backplate is arranged parallel to the Z direction, and the signal board modules are stacked along the Z direction and are designed to be retractable relative to the first housing along the Y direction.

5. The signal generator according to claim 4, characterized in that, Two signal modules are spaced apart along the X direction inside the first enclosure, and two power modules are spaced apart along the X direction for each signal module inside the second enclosure, with the two heat sinks corresponding to the two signal modules spliced ​​together along the X direction.

6. The signal generator according to claim 5, characterized in that, The first housing and the second housing are respectively provided with the fan at both ends along the X direction, and the fan is provided between the two power modules and between the two signal modules, and the air inlet and outlet directions of the multiple fans are set to be the same.

7. The signal generator according to claim 4, characterized in that, The signal board module includes a signal board and a first panel; the signal board is inserted into the back plate, and the first panel is fixedly connected to the end of the signal board away from the back plate and is detachably fixedly connected to the first housing.

8. The signal generator according to claim 7, characterized in that, The signal board is divided into a core signal board and at least one replaceable signal board. The core signal board is used to generate test image signals, and the replaceable signal board is used to perform extended conversion of test image signals. The core signal board is located inside the signal board module at the top layer, the TEC heat dissipation module is attached and fixed to the core signal board, and the heat sink is fixed to the core signal board at intervals by studs.

9. The signal generator according to claim 8, characterized in that, The signal board module also includes a pull-out aid for assisting in the insertion and removal of the core signal board from the backplane.

10. The signal generator according to claim 4, characterized in that, The power module includes a power generation board, a driver board, a DC-DC power board, and a second panel. The power generation board is connected to the connector. The driver board and the DC-DC power board are arranged on the same layer and stacked on top of the power generation board. The second panel is fixedly arranged on the side of the power generation board and is detachably and fixedly connected to the second housing. And / or, The first housing includes a first bottom plate, three first side plates and two top plates. The first bottom plate extends along the X direction. The three first side plates are fixed to the first bottom plate and form an opening on one side of the first housing. The two top plates extend along the X direction and are detachably fixed to the side of the first side plate away from the first bottom plate at intervals along the Y direction. The heat sink is sandwiched in the interval.

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