CN224205443U - Signal generator - Google Patents

Abstract

The utility model discloses a signal generator, which belongs to the technical field of photoelectric detection and comprises a power module, a signal module and a heat dissipation module, wherein the heat dissipation module is arranged in the heat dissipation module and is attached to the signal module, so that heat generated by the signal module is absorbed through close contact with the signal module, and then the heat is dissipated into the surrounding environment through a heat dissipation sheet and a fan, so that the rapid heat dissipation of the signal module is realized, the heat dissipation requirement of the signal generator under high temperature and high humidity is met, meanwhile, the signal module and the power module are respectively arranged in a box body which is arranged in a stacked manner, the functional partition is realized, and each signal board module in the signal module can be inserted and pulled relative to the box body, so that the requirement of a user for replacement according to the requirement is met, the debugging and the maintenance of the device are facilitated, and the use efficiency and the convenience of equipment are improved.

Description

Signal generator

Technical Field

The utility model belongs to the technical field of photoelectric detection, and particularly relates to a signal generator applied to a high-temperature and high-humidity environment.

Background

The signal generator is a device for providing switching different colors and patterns for a display screen, and is widely applied to production test of electronic equipment. The existing signal generator generally adopts a structural design of stacking a plurality of layers of circuit boards, and the layers of circuit boards are connected through wires or copper wires. However, the existing signal generator has the following problems:

1) When the device is applied to a high-temperature and high-humidity environment, the existing heat dissipation device cannot meet the heat dissipation requirement, and the temperature rise of the circuit board is difficult to effectively control, so that the performance of the device is reduced or even damaged;

2) The distribution of the circuit boards lacks of an optimal design, the arrangement of each functional module is scattered, the overall attractiveness of the equipment is reduced, extra electromagnetic interference can be caused due to disordered wiring, the stability and reliability of equipment signals are affected, and the circuit boards stacked layer by layer bring trouble to the subsequent debugging and maintenance of the circuit boards;

3) Because of the need to support multiple application environments, an internal or external expansion board is generally required for the device, and the existing device cannot flexibly meet the requirements.

Disclosure of utility model

In view of one or more of the above drawbacks or improvements of the prior art, the present utility model provides a signal generator that can meet the heat dissipation requirements of a device at high temperature and high humidity, and realize functional partitioning of the device, so as to facilitate management and maintenance.

In order to achieve the above object, the present utility model provides a signal generator, which includes a power module, a signal module, and a heat dissipation module;

the signal module comprises a back plate and a plurality of signal plate modules, wherein each signal plate module is spliced with the back plate;

The power supply module comprises a power panel module, and the power panel module is electrically connected with the backboard through a connector;

the heat dissipation module comprises a TEC heat dissipation module, a heat dissipation sheet and a plurality of fans, wherein one end of the TEC heat dissipation module is attached to the top of the signal module, the other end of the TEC heat dissipation module is attached to the heat dissipation sheet, and the fans are arranged on the sides of the power module and the signal module.

As a further improvement of the utility model, the heat dissipation sheet comprises a base and a plurality of heat dissipation sheets connected and arranged on 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 arranged at intervals along the Y direction.

As a further improvement of the utility model, a groove is arranged on one side of the cooling fin, which is away from the TEC cooling module, a turbofan is arranged in the groove, the turbofan is used for air inlet along the Z direction and air outlet along the XY direction, and the turbofan and the TEC cooling module are correspondingly arranged along the Z direction so as to accelerate the cooling of the cooling fin through the turbofan;

And a detachable upper cover is arranged on one side of the groove, which is away from the TEC heat dissipation module, so that the turbofan is packaged in the groove.

As a further improvement of the utility model, the portable electronic device further comprises a first box body and a second box body which are arranged in a stacked manner along the Z direction and are detachably connected, wherein the signal module is arranged in the first box body, and the power module is arranged in the second box body;

The backboard is arranged in parallel to the Z direction, and each signal board module is arranged in a stacked mode in the Z direction and is of a drawable design relative to the first box body in the Y direction.

As a further improvement of the utility model, two signal modules are arranged in the first box body at intervals along the X direction, two power supply modules are arranged in the second box body at intervals along the X direction corresponding to each signal module, and two cooling fins corresponding to the two signal modules are spliced along the X direction.

As a further improvement of the utility model, the fans are respectively arranged at two ends of the first box body and the second box body along the X direction, the fans are arranged between the two power supply modules and between the two signal modules, and the wind inlet and outlet directions of the fans are the same.

As a further improvement of the utility model, the signal board module comprises a signal board and a first panel, wherein the signal board is spliced with the back board, and the first panel is fixedly connected to one end of the signal board, which is away from the back board, and is detachably and fixedly connected with the first box body.

As a further improvement of the present utility model, the signal boards are divided into a core signal board for generating the test image signal and at least one replaceable signal board for performing an extended conversion of the test image signal;

The core signal board is arranged in the signal board module located at the top layer, the TEC heat dissipation module is attached to and fixed on the core signal board, and the heat dissipation fins are fixed on the core signal board at intervals through studs.

As a further improvement of the present utility model, the signal board module further includes a pull-out aid for assisting in the insertion and removal between the core signal board and the back board.

As a further improvement of the utility model, the power supply module comprises a power supply generating plate, a driving plate, a DCDC power supply plate and a second panel, wherein the power supply generating plate is connected with the connector, the driving plate and the DCDC power supply plate are arranged on the same layer and are stacked up and down to be combined with the power supply generating plate, and the second panel is fixedly arranged on the side edge of the power supply generating plate and is detachably and fixedly connected with the second box body;

And/or the number of the groups of groups,

The first box comprises a first bottom plate, three first side plates and two top plates, wherein the first bottom plate extends along the X direction, the three first side plates are enclosed and fixed on the first bottom plate, an opening is formed on one side of the first box, the two top plates extend along the X direction respectively, the two top plates are detachably fixed on one side, deviating from the first bottom plate, of the first side plates along the Y direction at intervals, and the radiating fins are clamped in the intervals.

The above-mentioned improved technical features can be combined with each other as long as they do not collide with each other.

In general, the above technical solutions conceived by the present utility model have the beneficial effects compared with the prior art including:

(1) According to the signal generator, the TEC heat dissipation module attached to the signal module is arranged in the heat dissipation module, so that heat generated by the TEC heat dissipation module is absorbed through close contact with the signal module, and then the heat is dissipated into the surrounding environment through the heat dissipation fins and the fan, so that the signal module can be quickly dissipated, and the heat dissipation requirement of the signal generator under high temperature and high humidity is met.

(2) The signal generator is characterized in that the signal module and the power module are respectively arranged in the first box body and the second box body which are arranged in a stacked mode, so that the partition management of the signal generator is realized according to functions, and the signal board modules are arranged to be stacked along the Z direction and are of a drawable design relative to the first box body, so that the signal board modules can be replaced according to the needs of users, and the users can conveniently debug and maintain the modules.

(3) According to the signal generator, the plurality of signal modules are arranged in the first box body, and the plurality of power modules are correspondingly arranged in the second box body, so that the requirement that a user can utilize one signal generator to detect a plurality of devices simultaneously is met.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the overall structure of a signal generator in an embodiment of the utility model;

FIG. 2 is a schematic diagram of an assembly structure of a power module and a signal module according to an embodiment of the present utility model;

FIG. 3 is an exploded view of the structure of a signal module in an embodiment of the utility model;

FIG. 4 is a schematic diagram of a heat dissipating module according to an embodiment of the present utility model;

FIG. 5 is an exploded view of a power module according to an embodiment of the present utility model

Fig. 6 is a schematic structural view of the extractor according to the embodiment of the present utility model.

In all the drawings, the same reference numerals refer to the same technical characteristics, namely 1, a first box body, 11, a first bottom plate, 12, a first side plate, 13, a top plate, 14, a first bracket, 2, a second box body, 21, a second bottom plate, 22, a second side plate, 23, a cover plate, 24, a second bracket, 3, a signal module, 31, a back plate, 32, a back plate bracket, 33, a core signal plate, 34, a replaceable signal plate, 35, a first panel, 36, a pull aid, 37, a guide rail, 38, a guide rail fixing frame, 4, a power module, 41, a power generation plate, 42, a driving plate, 43, a DCDC power plate, 44, a second panel, 45, a support column, 5, a connector, 6, a heat dissipation module, 61, a TEC heat dissipation module, 62, a heat dissipation sheet, a groove, 63, a turbofan, 64, an upper cover, 65, a fan, 7, a bottom bracket, 8 and a positioning column.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model. In addition, the technical features of the embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

In the description of the present utility model, it should be understood that unless explicitly specified and limited otherwise, the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience of description and simplicity of description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or an implicit indication of the number of features indicated unless explicitly stated or limited otherwise. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, directly connected, indirectly connected through an intervening medium, or in communication between two elements or in an interaction relationship between two elements, unless otherwise explicitly specified. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

Examples:

referring to fig. 1 to 6, the signal generator in the preferred embodiment of the present utility model includes a box, and a signal module 3, a power module 4 and a heat dissipation module 6 disposed in the box, so as to provide power for the signal module 3 through the power module 4, test a product through the signal module 3, and dissipate heat from the power module 4 and the signal module 3 through the heat dissipation module 6.

Specifically, as shown in fig. 1, the case in the preferred embodiment includes a first case 1 and a second case 2, wherein a signal module 3 is provided in the first case 1, including a back plate 31 and a plurality of signal plate modules, each signal plate module being plugged with the back plate 31.

Specifically, the back plate 31 is fixed in the first box 1 through the back plate bracket 32 and is arranged along a direction parallel to the Z direction, a plurality of signal board modules are stacked along the Z direction and arranged in the first box 1, and a plurality of plug connectors are arranged on the back plate 31 at intervals along the Z direction, so that each signal board module is respectively plugged with the back plate 31 through the plug connectors.

Preferably, as shown in fig. 2, the plurality of signal board modules are designed to be drawable along the Y direction relative to the first box 1, so as to facilitate the user to debug and repair the signal board modules.

More specifically, the signal board module includes a signal board and a first panel 35, the signal board is plugged with the back plate 31, the first panel 35 is fixedly connected to one end of the signal board away from the back plate 31, and the first panel 35 is detachably and fixedly connected to the first box 1 through a hand screw, so that the signal board is packaged in the first box 1 through the first panel 35.

Further, the signal board comprises 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 arranged in each signal board module and are respectively spliced with the backboard 31 so as to generate a test image signal through the core signal board 33 and perform expansion conversion of the test image signal through the replaceable signal board 34, meanwhile, the signal module 3 is divided into a plurality of card inserting modules according to different functions by combining the drawable design of each signal board module and the first box body 1, so that a user can conveniently replace the card inserting modules according to requirements, such as new and old replacement of the core signal board 33 and the replaceable signal board 34 or replace the replaceable signal board 34 according to the requirements of output signals.

In the preferred embodiment shown in fig. 2, three signal board modules are disposed in the signal module 3, the signal board in the signal board module on the top layer is a core signal board 33 for processing and outputting lvds signals, the signal board in the signal board module on the middle layer is also a replaceable signal board 34 for outputting dp signals, and the signal board in the signal board module on the lowest layer is also a replaceable signal board 34 for outputting mipi signals. In actual fabrication, the corresponding replaceable signal board 34 can be selected according to the output signal required by the user.

Preferably, as shown in fig. 3, since the number of connectors to be plugged between the core signal board 33 and the back board 31 is large, it is difficult to manually plug, and it is preferable to provide a plug-in aid 36 in the signal board module, so as to assist the plugging and separating between the core signal board 33 and the back board 31 by pulling the plug-in aid 36, thereby realizing the direct replacement of the signal module without moving the main structure, and improving the installation and subsequent maintenance efficiency of the device. In the preferred embodiment shown in fig. 3, the extractors 36 are symmetrically disposed at both ends of the first panel 35.

Preferably, as shown in fig. 6, the pull aid 36 is rotatably connected with the first panel 35, a rotating groove is provided on the first panel 35 corresponding to the pull aid 36, one end of the pull aid 36 penetrates out of the first case 1 from the rotating groove, and the pull aid 36 can rotate along the rotating groove, meanwhile, the other end of the pull aid 36 is provided with an F-shaped and a stop block is fixedly arranged on the first case 1 and is blocked in the F-shaped pull aid 36, so that when the pull aid 36 is pulled, the F end of the pull aid 36 abuts against the stop block and pushes the first panel 35 inwards or outwards by force, and thus the plug-in between the core signal board 33 and the back plate 31 is realized.

In another embodiment of the present utility model, the pull-up aid is rotatably connected to the first panel 35, and a rotating groove is disposed on the first panel 35 corresponding to the pull-up aid, one end of the pull-up aid penetrates out of the first case 1 from the rotating groove, and the pull-up aid can rotate along the rotating groove, meanwhile, a blocking member is disposed on the other end of the pull-up aid body, which is away from the first side panel 12, and a stop block is fixedly disposed on the first side panel 12 corresponding to the blocking member, and the blocking member can abut against the side of the stop block, which is away from the first panel 35, so as to push the first panel 35 to move outwards by force.

Preferably, in order to facilitate the drawable installation and the plugging guide of the signal board module, at least one side of the corresponding signal board module is provided with a guide rail 37, the guide rail 37 extends along the Y-axis direction, and the guide rail 37 is fixedly installed on the first bottom plate 11 through a guide rail fixing frame 38, and meanwhile, the side edge of the signal board module is slidably inserted in the guide rail 37, so that the drawable design of the signal board module along the Y-axis direction is realized. In the preferred embodiment shown in fig. 4, guide rails 37 are correspondingly disposed on both sides of the signal board module, and a plurality of guide rails 37 on each side are disposed on a guide rail fixing frame 38 at vertical intervals.

Further, the power module 4 in the preferred embodiment is disposed in the second casing 2, and the second casing 2 is disposed under the first casing 1 in a stacked manner in the Z direction and is detachably connected to the first casing 1.

Specifically, as shown in fig. 5, the power module 4 includes a power panel module and a second panel 44, where the power panel module is fixedly disposed 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.

More specifically, the power panel module comprises a power generation panel 41, a driving panel 42, a DCDC power panel 43 and a second panel 44, wherein the driving panel 42 and the DCDC power panel 43 are arranged on the same layer, are respectively and fixedly connected with the power generation panel 41 in a stacking way up and down through studs, and are connected and installed on the power generation panel 41, the connector 5 penetrates through the cover plate 23 to be plugged with the signal module 3 so as to output an adjustable power supply through the power generation panel 41, output an adjustable power supply with low ripple and protection and monitoring through the driving panel 42, and output a constant current power supply through the DCDC power panel 43.

Meanwhile, the second panel 44 is fixedly connected to one side of the power generation panel 41, and the second panel 44 is detachably fixed to the second case 2, so that the power panel module is packaged in the second case 2 through the second panel 44.

Preferably, a plurality of support columns 45 are also provided at opposite sides of the second bottom plate 21 and the cover plate 23, respectively, to support upper and lower sides of the power panel module.

Further, the heat dissipation module 6 in the preferred embodiment includes a TEC heat dissipation module 61, a heat dissipation fin 62 and a fan 65, wherein one end of the TEC heat dissipation module 61 is attached to and fixed on the signal module 3, specifically attached to and fixed on the core signal board 33 to dissipate heat of the core signal board 33, the other end is attached to the heat dissipation fin 62, the heat dissipation fin 62 is fixed on the core signal board 33 at intervals through studs to accelerate heat dissipation of the TEC heat dissipation module 61, and the fan 65 is disposed in the first case 1 and the second case 2 and is disposed at two sides of the signal module 3 and the power module 4 to accelerate air circulation in the case to further dissipate heat of the signal module 3 and the power module 4.

More specifically, the heat sink 62 includes a base and a plurality of heat sink fins extending in the X direction and spaced apart in the Y direction, and a plurality of heat sink fins are provided in connection with the base to connect the plurality of heat sink fins together by the base and to detachably and fixedly connect the heat sink fins to the signal module 3 by the base.

Preferably, as shown in fig. 4, a groove 621 is provided on a side of the heat sink 62 facing away from the TEC heat dissipation module 61, and a turbofan 63 is provided in the groove 621, and the turbofan 63 is air-fed in the Z direction and air-discharged in the XY direction, so as to accelerate the air flow rate in the channels by blowing air into the channels between the heat dissipation sheets, thereby accelerating the heat dissipation of the heat sink 62. In addition, because the temperature of the cooling fin in the area directly contacted with the TEC cooling module is relatively high, it is preferable that the turbo fan 63 and the TEC cooling module are correspondingly arranged along the Z direction.

Meanwhile, an upper cover 64 is further disposed on a side of the heat sink 62 facing away from the signal module 3 corresponding to the recess 621, and a plurality of heat dissipation holes are formed in the upper cover 64 to encapsulate the turbo fan 63 in the recess 621.

Of course, in practical arrangement, if the design space of the apparatus is not limited, the turbo fan 63 in the recess 621 may be replaced by a normal fan, and may be arranged to pass in and out the wind in the X direction.

Preferably, a plurality of signal modules 3 are arranged in the first box 1 at intervals along the X direction, a plurality of power modules 4 are arranged in the second box 2 at intervals corresponding to the signal modules 3, the power modules 4 and the signal modules 3 are respectively connected through connectors 5 so as to meet the requirement that the signal generator can detect a plurality of devices at the same time, and correspondingly, cooling fins 62 arranged corresponding to the signal modules 3 are spliced at the tops of the signal modules 3 along the X direction. As shown in fig. 1 to 6, two signal modules 3 are provided in the first casing 1, and two power modules 4 are provided in the second casing 2.

In actual installation, multiple rows of fans 65 are arranged in the X-direction spacing channels and at the sides of each signal module 3 and each power module 4, each exhaust fan 65 comprises at least one fan 65, and the wind directions of all fans 65 are the same, so as to radiate heat for each signal module 3 and each power module 4.

Further, as shown in fig. 3, the first case 1 in the preferred embodiment includes a first bottom plate 11, three first side plates 12 and two top plates 13, wherein the first bottom plate 11 extends in the X direction, the three first side plates 12 are fixed around the first bottom plate 11 and form openings on one side of the first case 1 for the drawing installation of each signal plate module, the two top plates 13 extend in the X direction and are fixed detachably on one side of the first side plates 12 facing away from the first bottom plate 11 at intervals in the Y direction, and a heat sink 62 is sandwiched between the intervals of the two top plates 13, thereby encapsulating the top of the first case 1 through the two top plates 13 and the heat sink 62.

Preferably, a plurality of holes for heat dissipation are provided on at least one first side plate 12 corresponding to the fan 65, so as to accelerate heat dissipation in the first case 1.

Further, as shown in fig. 5, the second case 2 in the preferred embodiment includes a second bottom plate 21, three second side plates 22 and a cover plate 23, where the second bottom plate 21 and the cover plate 23 are square plates and are arranged in parallel and spaced up and down, and the three second side plates 22 are sequentially enclosed between the second bottom plate 21 and the cover plate 23 and fixedly connected with 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 case structure with one side open.

Preferably, a plurality of holes for heat dissipation are distributed on at least one second side plate 22 corresponding to the fans 65, so as to accelerate heat dissipation in the second case 2.

Preferably, the first bracket 14 is provided on the first case 1, and the second bracket 24 is provided on the second case 2, wherein the first bracket 14 and the second bracket 24 can be locked up and down to realize up and down opposite connection of the first case 1 and the second case 2.

Preferably, a positioning piece is further arranged between the signal module 3 and the power module 4 so as to position and guide the up-and-down assembly of the first box 1 and the second box 2.

Preferably, the locating piece includes a plurality of locating columns 8 that the interval set up, and the one end of locating column 8 is fixed to be set up on second bottom plate 21 to set up the locating hole that can match with locating column 8 on first bottom plate 11, through inserting locating column 8 matching in the locating hole that corresponds, the upper and lower alignment of first box 1 and second box 2 is inserted and is guided the location. As shown in fig. 2, one positioning column 8 is provided at each of four corners of the second base plate 21, and positioning uniformity is ensured by multi-point positioning.

Preferably, bottom brackets 7 are also provided on both sides of the second base plate 21, respectively, to support the entire signal generator by the bottom brackets 7.

When the signal module 3 is installed, the back plate 31 is fixed on the back plate support 32 based on the first bottom plate 11, then the back plate support 32 is fixedly installed on the first bottom plate 11, the fans 65 are fixed on two sides of the first box body 1 and the middle position of the two signal modules 3, each guide rail 37 is firstly installed on the guide rail fixing frame 38, then the guide rail fixing frame 38 is fixed on the first bottom plate 11, the pull-up aid 36 is firstly fixed on the first panel 35 through step screws, then the first panel 35 is fixed with the core signal plate 33, the TEC heat dissipation module 61 and the heat dissipation fins 62 are fixed on the core signal plate 33, then the signal plate module is inserted into the guide rail groove, the core signal plate 33 is assisted with the pull-up aid 36 to be connected with the back plate 31, the replaceable signal plate 34 is fixed with the first panel 35 and is inserted on the back plate 31 through the guide rail 37, and each first panel 35 is fixed on the first box body 1 through hand screws.

When the power module 4 is installed, the power generation board 41, the driving board 42 and the DCDC power board 43 can be fixedly connected through studs, the second panel 44 and the power generation board 41 are fixedly connected, then the power board module and the fan 65 are installed on the cover board 23, the second bottom board 21 and other parts are installed, and then the second box body 2 is integrally turned over.

After the signal module 3 and the power module 4 are assembled respectively, the two boxes are connected in an up-down opposite-inserting way through the positioning column 8 between the two boxes, and the two boxes are locked together by the first bracket 14 and the second bracket 24.

Accordingly, when the signal board module needs to be replaced, the replaceable signal board 34 can be pulled out by loosening the hand screws on both sides of the first panel 35, and the pulling aid 36 is pulled out to pull out the core signal board 33.

It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the utility model and is not intended to limit the utility model, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the utility model are intended to be included within the scope of the utility model.

Claims (10)

1. The signal generator is characterized by comprising a power supply module, a signal module and a heat dissipation module;

the signal module comprises a back plate and a plurality of signal plate modules, wherein each signal plate module is spliced with the back plate;

The power supply module comprises a power panel module, and the power panel module is electrically connected with the backboard through a connector;

the heat dissipation module comprises a TEC heat dissipation module, a heat dissipation sheet and a plurality of fans, wherein one end of the TEC heat dissipation module is attached to the top of the signal module, the other end of the TEC heat dissipation module is attached to the heat dissipation sheet, and the fans are arranged on the sides of the power module and the signal module.

2. The signal generator of claim 1, wherein the heat sink comprises a base and a plurality of heat sink fins connected to the base, the base is detachably and fixedly connected to the signal module, the heat sink fins extend along the X-direction, and the plurality of heat sink fins are spaced along the Y-direction.

3. The signal generator of claim 2, wherein a groove is formed in one side of the cooling fin, which faces away from the TEC cooling module, a turbofan is arranged in the groove, the turbofan is used for air inlet along the Z direction and air outlet along the XY direction, and the turbofan and the TEC cooling module are correspondingly arranged along the Z direction so as to accelerate cooling of the cooling fin through the turbofan;

And a detachable upper cover is arranged on one side of the groove, which is away from the TEC heat dissipation module, so that the turbofan is packaged in the groove.

4. The signal generator according to any one of claims 1 to 3, further comprising a first box body and a second box body which are arranged in a stack along the Z direction and are detachably connected, wherein the signal module is arranged in the first box body, and the power module is arranged in the second box body;

The backboard is arranged in parallel to the Z direction, and each signal board module is arranged in a stacked mode in the Z direction and is of a drawable design relative to the first box body in the Y direction.

5. The signal generator of claim 4, wherein two signal modules are arranged in the first box body at intervals along the X direction, two power supply modules are arranged in the second box body at intervals along the X direction corresponding to each signal module, and two cooling fins corresponding to the two signal modules are spliced along the X direction.

6. The signal generator according to claim 5, wherein the fans are respectively disposed at both ends of the first case and the second case in the X direction, the fans are disposed between the two power modules and between the two signal modules, and the inlet and outlet wind directions of the fans are set to be the same.

7. The signal generator of claim 4, wherein the signal board module comprises a signal board and a first panel, the signal board is inserted into the back board, and the first panel is fixedly connected to one end of the signal board, which is away from the back board, and is detachably and fixedly connected with the first box.

8. The signal generator of claim 7, wherein the signal board is divided into a core signal board and at least one replaceable signal board, the core signal board for generating the test image signal, the replaceable signal board for performing an extended conversion of the test image signal;

The core signal board is arranged in the signal board module located at the top layer, the TEC heat dissipation module is attached to and fixed on the core signal board, and the heat dissipation fins are fixed on the core signal board at intervals through studs.

9. The signal generator of claim 8, wherein the signal board module further comprises a unplugging aid for facilitating plug-in between the core signal board and the back plate.

10. The signal generator according to claim 4, wherein the power supply module comprises a power supply generating board, a driving board, a DCDC power board and a second panel, the power supply generating board is connected with the connector, the driving board and the DCDC power board are arranged on the same layer and are stacked up and down with the power supply generating board, and the second panel is fixedly arranged on the side edge of the power supply generating board and is detachably and fixedly connected with the second box body;

And/or the number of the groups of groups,

The first box comprises a first bottom plate, three first side plates and two top plates, wherein the first bottom plate extends along the X direction, the three first side plates are enclosed and fixed on the first bottom plate, an opening is formed on one side of the first box, the two top plates extend along the X direction respectively, the two top plates are detachably fixed on one side, deviating from the first bottom plate, of the first side plates along the Y direction at intervals, and the radiating fins are clamped in the intervals.