CN211061064U

CN211061064U - Built-in air-cooled heat abstractor and infrared detector of infrared core

Info

Publication number: CN211061064U
Application number: CN201922084452.3U
Authority: CN
Inventors: 王丽娜; 黄晟; 王鹏; 周汉林
Original assignee: Wuhan Guide Sensmart Tech Co ltd
Current assignee: Wuhan Guide Sensmart Tech Co ltd
Priority date: 2019-11-26
Filing date: 2019-11-26
Publication date: 2020-07-21
Anticipated expiration: 2029-11-26

Abstract

The utility model belongs to the technical field of infrared imaging, in particular to an infrared core built-in air-cooled heat dissipation device and an infrared detector, which comprises a fan, a shell and a heat insulation block, wherein the shell comprises a side wall for installing a PCB (printed circuit board) group, the fan is detachably connected with the side wall, an open space is formed between the PCB group and the side wall, the fan is positioned in the open space, and the PCB group is positioned at an air inlet of the fan; one end of the heat insulation block is used for connecting the infrared sensor, and the other end of the heat insulation block is connected with the shell through a bolt. Keep apart circuit board and infrared sensor through the heat insulating block, and at the built-in air-cooled structure of circuit board mounting structure department, guarantee that the detector temperature rise is lower, and the rear end temperature also reduces relatively, and the reduction of rear end temperature can guarantee that the detector does not receive the temperature rise to influence, finally, reaches the imaging quality who has improved infrared core to and the accurate degree of temperature measurement, the effect of the life of extension infrared core.

Description

Built-in air-cooled heat abstractor and infrared detector of infrared core

Technical Field

The utility model belongs to the technical field of infrared imaging, concretely relates to built-in forced air cooling's of infrared core heat abstractor and infrared detector.

Background

The infrared core is an infrared thermal image component of a long-wave uncooled focal plane, mainly has two models of TC384 and TC160, adopts 384 × 288 image number/160 × 120 image number respectively, has high sensitivity, small volume, light weight, rich interfaces, complete functions and flexible customization, can be accessed to a security monitoring system and can be developed secondarily, the development difficulty of the thermal image system is greatly reduced, the development period is shortened, the TC series professional core is worthy of trust, generally comprises an external power interface, a BNC standard video output interface, a L VDS16 digital output interface and an RS232 control interface, the rich interfaces are very suitable for OEM assembly and integration, and the infrared thermal image component is widely applied to the infrared thermal image fields of various night vision systems, security systems, process control, medical equipment, army equipment and the like

At present, the installation space of the infrared movement is smaller, the external structure size of the infrared movement is limited, and products tend to be more and more miniaturized and highly integrated. At present, the heat dissipation way of the infrared movement is mainly through the conduction of radiation and heat dissipation structural parts, and the specific heat dissipation ways comprise the following two ways, namely, firstly, a metal heat dissipation structure is adopted for heat dissipation; secondly, heat is dissipated by utilizing heat-conducting materials, such as heat-conducting silicone grease and heat-conducting gaskets which are used in combination with a heat-dissipating structure, and finally the purpose of heat dissipation is achieved. However, the above heat dissipation method cannot dissipate heat quickly and effectively, or the heat dissipation force is not large enough; the infrared detector is used as a core device of the movement, the temperature is a main factor influencing the performance of the movement, the stability is easily reduced due to overhigh temperature, the service life of the movement is influenced, the imaging quality cannot be ensured, and the temperature measurement cannot be accurate.

Disclosure of Invention

The utility model aims at overcoming the problem of infrared core heat dissipation difficulty among the prior art.

Therefore, the utility model provides a built-in forced air cooling's of infrared core heat abstractor, including the fan, still include shell and heat insulating block, the shell includes the lateral wall that is used for installing PCB group, the fan with the lateral wall can be dismantled and be connected, and form open space between PCB group and the lateral wall, the fan is located in the open space, PCB group is located the air intake department of fan;

one end of the heat insulation block is used for connecting the infrared sensor, and the other end of the heat insulation block is connected with the shell through a bolt.

Preferably, the side wall of the housing is provided with a vent communicated with the outside, and the fan is installed in the vent.

Preferably, the housing is provided with first heat dissipation fins, and the first heat dissipation fins are located at the outlet of the ventilation opening.

Preferably, the device still includes the heat dissipation support, heat dissipation support one end is equipped with second radiating fin, heat dissipation support one end with the thermoblock bolted connection, the other end is connected with infrared sensor.

Preferably, the material of the heat dissipation bracket is 6061 aluminum.

Preferably, a heat-conducting silicone grease or a heat-conducting gasket is extruded and filled between the heat dissipation bracket and the heat insulation block.

Preferably, the device still includes the detector safety cover, the detector safety cover with pass through bolted connection between the heat dissipation support, the detector safety cover with enclose between the heat dissipation support and close the protection space that forms and be used for installing infrared inductor.

Preferably, the insulation block is made of plastic.

The utility model also provides an infrared detector, including infrared inductor and PCB board group, still include as before heat abstractor, infrared inductor with the one end of heat insulating block is connected, the shell with the other end of heat insulating block is connected, PCB board group with the shell is connected.

Preferably, the PCB group includes an upper PCB, a lower PCB, a front PCB and a rear PCB, and the upper PCB, the lower PCB, the front PCB and the rear PCB are detachably mounted on the upper surface, the lower surface, the front surface and the rear surface of the housing, respectively.

The utility model has the advantages that: the utility model provides a built-in forced air cooling's of infrared core heat abstractor and infrared detector, including the fan, still include shell and heat insulating block, the shell includes the lateral wall that is used for installing PCB group, and the fan can be dismantled with the lateral wall and be connected, and forms open space between PCB group and the lateral wall, and the fan is located open space, and PCB group is located the air intake of fan; one end of the heat insulation block is used for connecting the infrared sensor, and the other end of the heat insulation block is connected with the shell through a bolt. Keep apart circuit board and infrared sensor through the heat insulating block, and at the built-in air-cooled structure of circuit board mounting structure department, guarantee that the detector temperature rise is lower, and the rear end temperature also reduces relatively, and the reduction of rear end temperature can guarantee that the detector does not receive the temperature rise to influence, finally, reaches the imaging quality who has improved infrared core to and the accurate degree of temperature measurement, the effect of the life of extension infrared core.

The present invention will be described in further detail with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic structural view of an infrared detector and an air-cooled heat dissipation device built in an infrared movement of the utility model;

fig. 2 is a schematic view of an explosion three-dimensional structure of the infrared detector and the heat dissipation device with air cooling built in the infrared core of the utility model;

fig. 3 is a perspective view of the housing of the infrared detector and the heat sink with built-in air cooling of the infrared core of the present invention.

Description of reference numerals: the detector comprises a detector protective cover 1, an infrared inductor 2, a heat dissipation support 3, a heat insulation block 4, an upper PCB 5, a shell 6, a rear PCB 7, a front PCB 8, a lower PCB 9, a fan 10, a first heat dissipation fin 11 and a second heat dissipation fin 12.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of the present invention, "a plurality" means two or more unless otherwise specified.

The embodiment of the utility model provides a built-in forced air cooling's of infrared core heat abstractor, including the fan, still include shell and heat insulating block, the shell includes the lateral wall that is used for installing PCB group, the fan with the lateral wall can be dismantled and be connected, and PCB group and form open space between the lateral wall, the fan is located in open space, PCB group is located the air intake department of fan;

Therefore, as shown in fig. 1 to 3, the heat dissipation device is mainly used for mounting the infrared movement, that is, for dissipating heat of the infrared sensor 2 and the circuit board in the infrared detector. The infrared detector mainly comprises an infrared sensor 2 and a circuit board, wherein the infrared sensor 2 is extremely sensitive to temperature, and in the using process, if the temperature of the circuit board is transferred to the infrared sensor 2, the detection precision of the whole infrared detector can be influenced. The device includes half first and the latter half, separates through heat insulating block 4 between half first and the latter half, and half first installation infrared inductor 2, half back installation PCB board, heat insulating block 4 separates two parts around with totally for do not influence each other, stop the heat transfer. Specifically, the infrared sensor 2 is installed at the front end of the heat insulating block 4, the rear end of the heat insulating block 4 is installed on the housing 6, and the housing 6 has a plurality of sides, each of which can be used to install a PCB board. Install preceding PCB board 8 and fan 10 on the side of being connected with thermoblock 4, specifically, offer the ladder through-hole on the side, installation fan 10 is installed to ladder through-hole bottom, then from before installing preceding PCB board 8 and thermoblock 4 before the back in proper order again, preceding PCB board 8 is installed in the outer end of ladder through-hole, and thermoblock 4 is installed in the outermost end of shell 6. And gaps are reserved between the fan 10 and the front PCB 8 and between the front PCB 8 and the heat insulation block 4 for ventilation. When the fan 10 is turned on, wind enters from the side of the gap between the front PCB 8 and the heat insulation block 4 and the gap between the fan 10 and the front PCB 8, enters the gap between the fan 10 and the front PCB 8 along the edge, enters the fan 10 and then flows out from the rear end of the shell 6, so as to achieve the purpose of heat dissipation. The heat dissipation device ensures that the temperature rise of the detector is low, the temperature of the whole machine is relatively reduced, the detector can be effectively prevented from being influenced by the temperature rise, the imaging quality of the infrared core is improved, and the service life of the infrared core is prolonged.

Wherein, fan 10 is axial fan 10, can select its suitable size according to the core appearance, through the axis direction air inlet, along the direction air-out of axle, its air intake and air outlet are on an axis parallel line, and fan 10 installs the middle part at shell 6 structure. The shell 6 is used for fixing 4 PCB boards, a round hole is formed in the middle of the shell, the plane of the round hole is used for installing the built-in fan 10, the rear end of the shell 6 is of a fin structure, the first heat dissipation area is increased, the second is provided with a reasonable air channel, and enough space is provided for air inlet and air outlet of the fan 10.

Preferably, a ventilation opening communicating with the outside is formed in a side wall of the housing 6, and the fan 10 is installed in the ventilation opening. The fan 10 is installed in the ventilation opening, so that the convection of wind can be formed, and the wind is transmitted from the front end to the rear end, thereby achieving the purpose of cooling the rear end.

Preferably, the housing 6 is provided with a first heat dissipation fin 11, and the first heat dissipation fin 11 is located at an outlet of the ventilation opening. The radiating fins increase the radiating area and improve the radiating efficiency.

According to the preferable scheme, the device further comprises a heat dissipation support 3, one end of the heat dissipation support 3 is provided with a second heat dissipation fin 12, one end of the heat dissipation support 3 is connected with the heat insulation block 4 through a bolt, and the other end of the heat dissipation support is connected with the infrared sensor. The heat dissipation support 3 plays the effect of being convenient for the installation for the infrared inductor 2 of front end is easy to assemble, and infrared inductor 2's heat transfer to heat dissipation support 3, reaches radiating purpose with higher speed through heat dissipation support 3.

Preferably, the material of the heat dissipation bracket 3 is 6061 aluminum. The aluminum has light weight and good heat conductivity, is easy to process and mold and is convenient for installing the infrared sensor 2.

Preferably, the heat-conducting silicone grease or heat-conducting gasket is extruded and filled between the heat-radiating bracket 3 and the heat-insulating block 4. The infrared inductor 2 is locked on the heat dissipation support 3 through a fastening screw, the heat dissipation support 3 is provided with a mounting threaded hole, and heat conduction can be enhanced by using heat conduction silicone grease or a heat conduction gasket between the heat dissipation support 3 and the heat dissipation support. The front end of the infrared inductor 2 is provided with a detector protective cover 1. An infrared lens can be added at the front end of the infrared sensor 2 according to actual needs.

Preferably, the device further comprises a detector protection cover 1, the detector protection cover 1 is connected with the heat dissipation support 3 through bolts, and a protection space for installing the infrared inductor 2 is formed by enclosing the detector protection cover 1 and the heat dissipation support 3. Therefore, the detector protection cover 1 plays a role in protection, and external dust is prevented from entering to influence the sensitivity of the infrared sensor 2.

Preferably, the thermal insulating block 4 is made of plastic. The heat insulation block 4 is made of plastic and aims to insulate heat at the rear end and prevent the infrared detector from being affected by temperature rise at the rear end so as to cause unstable performance.

The embodiment of the utility model provides an infrared detector is still provided, including infrared inductor 2 and PCB board group, still include as before heat abstractor, infrared inductor 2 with the one end of thermoblock 4 is connected, shell 6 with the other end of thermoblock 4 is connected, PCB board group with shell 6 is connected.

Preferably, the PCB assembly includes an upper PCB 5, a lower PCB 9, a front PCB 8 and a rear PCB 7, and the upper PCB 5, the lower PCB 9, the front PCB 8 and the rear PCB 7 are detachably mounted on the upper surface, the lower surface, the front surface and the rear surface of the housing 6, respectively.

The specific working principle is as follows: after the movement starts to work, the infrared sensor 2 at the front end of the infrared detector and the PCB at the rear end can generate heat, and the bottom of the infrared sensor 2 is connected with the heat dissipation bracket 3 to conduct the heat to the heat dissipation bracket 3; the heat generated by the rear circuit board is isolated by the heat insulation block 4 and is unlikely to transfer heat to the front end, and meanwhile, the fan 10 works to force air cooling to guide out the heat at the rear end from the middle to the rear end through convection, so that the purpose of heat dissipation at the rear end is achieved. The built-in air-cooled structure of the infrared core ensures that the temperature rise of the detector is low, the temperature of the rear end is relatively reduced, the temperature of the rear end is reduced, the detector is guaranteed not to be influenced by the temperature rise, and finally the effects of improving the imaging quality of the infrared core, measuring the temperature accurately and prolonging the service life of the infrared core are achieved.

The above examples are merely illustrative of the present invention and do not limit the scope of the present invention, and all designs identical or similar to the present invention are within the scope of the present invention.

Claims

1. The utility model provides a built-in forced air cooling's of infrared core heat abstractor, includes the fan, its characterized in that: the fan is detachably connected with the side wall, an open space is formed between the PCB group and the side wall, the fan is positioned in the open space, and the PCB group is positioned at an air inlet of the fan;

2. The built-in air-cooled heat dissipation device of infrared movement of claim 1, characterized in that: the lateral wall of shell is equipped with the communicating vent with the external world, the fan is installed in the vent.

3. The built-in air-cooled heat abstractor of infrared core of claim 2, characterized in that: the shell is provided with first radiating fins, and the first radiating fins are located at the outlet of the ventilation opening.

4. The built-in air-cooled heat dissipation device of infrared movement of claim 1, characterized in that: the device further comprises a heat dissipation support, wherein one end of the heat dissipation support is provided with a second heat dissipation fin, one end of the heat dissipation support is connected with the heat insulation block through a bolt, and the other end of the heat dissipation support is connected with the infrared sensor.

5. The built-in air-cooled heat abstractor of infrared core of claim 4, characterized in that: the material of the heat dissipation support is 6061 aluminum.

6. The built-in air-cooled heat abstractor of infrared core of claim 4, characterized in that: and heat-conducting silicone grease or heat-conducting gaskets are extruded and filled between the heat-radiating bracket and the heat-insulating block.

7. The built-in air-cooled heat abstractor of infrared core of claim 4, characterized in that: the device still includes the detector safety cover, the detector safety cover with pass through bolted connection between the heat dissipation support, the detector safety cover with enclose between the heat dissipation support and close the protection space that forms and be used for installing infrared inductor.

8. The built-in air-cooled heat dissipation device of infrared movement of claim 1, characterized in that: the insulating blocks are made of plastic.

9. The utility model provides an infrared detector, includes infrared inductor and PCB board group, its characterized in that: the heat dissipating device of any of claims 1 to 8, further comprising the infrared sensor coupled to one end of the heat insulating block, the housing coupled to the other end of the heat insulating block, the set of PCB boards coupled to the housing.

10. The infrared detector of claim 9, wherein: the PCB group comprises an upper PCB, a lower PCB, a front PCB and a rear PCB, wherein the upper PCB, the lower PCB, the front PCB and the rear PCB are detachably mounted on the upper surface, the lower surface, the front surface and the rear surface of the shell respectively.