CN113406844B - Video camera - Google Patents

Abstract

The application discloses camera, the device includes: the device comprises a shell, a lens, an axial flow fan, a camera heat source, a radiating block and a blower fan; the axial flow fan is arranged on the first side of the lens and comprises an axial flow fan air inlet and an axial flow fan air outlet; the camera heat source is arranged on the second side of the lens, and the second side is adjacent to the first side; the heat dissipation block is arranged at one side of the camera heat source far away from the lens; an air outlet of the axial flow fan is opposite to one end of the radiating block; the blast fan comprises a blast fan air suction port and a blast fan air outlet, and the blast fan air suction port and the radiating block are arranged oppositely; the axial flow fan air inlet sucks air, the air is blown out through the axial flow fan air outlet, and the air blown out by the axial flow fan air outlet and the hot air scattered by the radiating block are sucked by the blower air inlet and blown out through the blower air outlet so as to radiate heat of a camera heat source. According to the electronic component heat dissipation device, through the synergistic effect of the double fans, heat dissipation of the chip can be accelerated, and the service life of the electronic component is prolonged.

Description

Video camera

Technical Field

The application relates to the technical field of cameras, in particular to a camera.

Background

A camera is a machine that converts optical image signals into electrical signals for storage or transmission. Specifically, the camera shoots a scene through a lens, the generated Optical Image is projected onto an Optical Sensor (Optical Sensors), an Image signal processor (Image Signal Processor, ISP) is used for processing output Data of the Image Sensor, the restored Optical Image is converted into an electric signal, the electric signal is converted into a digital signal through analog-to-digital conversion, the digital signal is processed by a digital signal processor (Digital Signal Processor, DSP), and finally the processed Image is stored in a Double Data Rate SDRAM (DDR) and is converted into an Image which can be seen on a screen.

When the camera works, a large amount of heat is generated when various chips (ISP (Internet service provider) boards, DSP (digital signal processor), DDR (double data rate) and other heating devices in the equipment and a camera heat source and other heating devices run, and if the heat cannot be timely dissipated, the temperature of the chip in the equipment is increased, and the service life of the chips and other electronic devices is reduced. In the prior art, a blast fan or an exhaust fan is generally adopted to radiate heat of the chip, however, the blast fan is singly used for radiating heat, and the problems of low radiating efficiency and the like still exist, so that the radiating of equipment is not facilitated.

Disclosure of Invention

The technical problem that this application mainly solves is to provide a camera, can solve camera chip heat dissipation overtemperature and the not high problem of radiating efficiency.

In order to solve the above technical problem, a technical solution adopted in the present application is to provide a camera, the device includes: a housing including a first housing and a second housing connected to each other; the lens is fixed on the first shell; the axial flow fan is arranged on the first side of the lens, close to the second shell, and comprises an axial flow fan air inlet and an axial flow fan air outlet; the camera heat source is arranged on the second side of the lens, and the second side is adjacent to the first side; the radiating block is arranged on one side of the camera heat source, which is away from the lens; the axial flow fan wind outlet and one end of the heat dissipation block, which is close to the second shell, are oppositely arranged; the blower fan is arranged opposite to one side of the radiating block, which is far away from the heat source of the camera; the blast fan comprises a blast fan air suction port and a blast fan air outlet, and the blast fan air suction port and the radiating block are arranged oppositely; the axial flow fan blows air to the radiating block, and the blower fan discharges hot air emitted by the radiating block so as to radiate heat of a camera heat source.

The camera comprises a first bracket, and the axial flow fan is arranged on a first side of the lens through the first bracket.

Wherein the camera further comprises a chip.

Wherein, the camera heat source is closely attached with the radiating block through heat conduction mud.

The heat conduction mud comprises silicon resin, heat conduction filler and bonding material.

The side of the radiating block, which is far away from the camera heat source, is provided with a radiating block fin, the air outlet of the axial flow fan and one end of the radiating block fin, which is close to the second shell, are oppositely arranged, and the air inlet of the blower fan and one side of the radiating block fin, which is far away from the camera heat source, are oppositely arranged.

The number of the fins of the radiating block is at least two.

The device also comprises a blowing fan air channel, wherein the blowing fan air channel comprises an air channel bracket, so that the blowing fan is fixed in the blowing fan air channel through the air channel bracket, and the blowing fan air channel is fixed on the shell through a second bracket.

The device further comprises window glass which is arranged on the surface of the first shell and is opposite to the lens.

The first shell and the second shell are hemispherical in shape.

The beneficial effects of this application are: in other words, the axial fan is used for blowing air to the radiating block, and the hot air is discharged through the blower fan, so that heat dissipation is further accelerated. According to the axial flow fan, the axial flow fan is arranged on the lens assembly, the axial flow fan and the fan are used as a double fan, the heat dissipation of the chip can be accelerated through the synergistic effect of the double fans, the temperature of heat flow around the chip is reduced, and the service life of the electronic element is prolonged.

Drawings

FIG. 1 is a schematic diagram of an embodiment of a camera of the present application;

FIG. 2 is a schematic perspective view of a first bracket according to an embodiment of the camera of the present application;

FIG. 3 is a partially exploded view of one embodiment of a camera of the present application;

FIG. 4 is a schematic perspective view of a housing in one embodiment of a camera of the present application;

fig. 5 is a schematic view of a heat flow cycle in an embodiment of a camera of the present application.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

The terminology used in the embodiments of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, the "plurality" generally includes at least two, but does not exclude the case of at least one.

It should be understood that the term "and/or" as used herein is merely one relationship describing the association of the associated objects, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

It should be understood that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.

When the camera works, a large amount of heat is generated when various chips (ISP (Internet service provider) boards, DSP (digital signal processor), DDR (double data rate) and other heating devices in the equipment and a camera heat source and other heating devices run, and if the heat cannot be timely dissipated, the temperature of the chip in the equipment is increased, and the service life of the chips and other electronic devices is reduced. The existing heat dissipation technology adopts a shell to cling to a chip, so that the heat of the chip is transferred to the shell and then is dissipated to the external environment by radiation, however, the heat dissipation is slower in the mode, and the temperature inside the chip and the equipment cannot be reduced in time; or, the blower fan or the exhaust fan is adopted to radiate the chip, however, the blower fan is used alone to radiate the heat, the problem of low heat radiation efficiency and the like still exists, and the heat radiation of the equipment is not facilitated.

Based on the above situation, the application provides a camera, can solve camera chip heat dissipation overtemperature and the not high problem of radiating efficiency.

The camera provided by the application comprises: a housing including a first housing and a second housing connected to each other; the lens is fixed on the first shell; the axial flow fan is arranged on the first side of the lens, close to the second shell, and comprises an axial flow fan air inlet and an axial flow fan air outlet; the camera heat source is arranged on the second side of the lens, and the second side is adjacent to the first side; the radiating block is arranged on one side of the camera heat source, which is away from the lens; the axial flow fan wind outlet and one end of the heat dissipation block, which is close to the second shell, are oppositely arranged; the blower fan is arranged opposite to one side of the radiating block, which is far away from the heat source of the camera; the blast fan comprises a blast fan air suction port and a blast fan air outlet, and the blast fan air suction port and the radiating block are arranged oppositely; the axial flow fan blows air to the radiating block, and the blower fan discharges hot air emitted by the radiating block so as to radiate heat of a camera heat source.

According to the axial flow fan, the axial flow fan and the fan are arranged on the lens assembly, so that the heat dissipation of the electronic element can be accelerated, the temperature of heat flow around the electronic element is reduced, and the service life of the electronic element is prolonged.

For an explanation of the specific structure of the camera of the present application, please refer to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of the camera of the present application. As shown in fig. 1, in the present embodiment, a video camera 10 includes: a housing, a lens 1, an axial fan 2, a camera heat source 3, a heat dissipating block 4, and a blower fan 5.

Wherein the housing comprises a first housing 8 and a second housing 9 connected to each other; the lens 1 is fixed on the first housing 8; the axial flow fan 2 is arranged on the first side of the lens 1, which is close to the second shell 9, and the axial flow fan 2 comprises an axial flow fan air inlet 21 and an axial flow fan air outlet 22; a camera heat source 3 disposed on a second side of the lens 1, the second side being adjacent to the first side; the radiating block 4 is arranged on one side of the camera heat source 3, which is away from the lens 1; the axial flow fan air outlet 22 is arranged opposite to one end of the heat dissipation block 4 close to the second shell 9; a blower fan 5 disposed opposite to a side of the heat dissipation block 4 away from the camera heat source 3; the blower fan 5 includes a blower fan suction port 51 and a blower fan discharge port 52, the blower fan suction port 51 being disposed opposite to the heat dissipation block 4; wherein the axial flow fan 2 blows air toward the heat dissipation block 4, and the blower fan 5 discharges the hot air emitted from the heat dissipation block 4 to dissipate heat from the camera heat source 3.

Specifically, the heat dissipation block 4 is closely attached to the camera heat source 3 to dissipate heat conducted by the camera heat source 3 to the surrounding environment through radiation, so that air near the heat dissipation block 4 is warmed, and since the axial fan 2 is disposed on the first side of the lens 1 and the camera heat source 3 and the heat dissipation block 4 are located on the second side of the lens 1, the air near the first side of the lens 1 is less affected by heat radiated by the heat dissipation block 4. Relatively cool air (hereinafter referred to as cool air for convenience of description) near the first side of the lens 1 is sucked in by the axial flow fan air inlet 21, and is blown out through the axial flow fan air outlet 22 to accelerate heat dissipation of the heat dissipation block 4 and balance the air temperature near the heat dissipation block 4, and the heat flow temperature near the camera heat source 3 and the heat dissipation block 4 is reduced by mixing the cool air and the hot air. The blower fan 5 is disposed on a side of the heat dissipating block 4 away from the camera heat source 3, and the blower fan air inlet 51 is used for sucking cold air blown out by the axial flow fan air outlet 22 and hot air dissipated by the heat dissipating block 4, and exhausting the hot air through the blower fan air outlet 52, so as to further suck and dissipate the heat of the heat dissipating block 4.

The blower fan 5 has an air duct, and includes a blower fan air inlet 51 and a blower fan air outlet 52, wherein the blower fan air inlet 51 can accurately suck the cool air blown out by the axial flow blower air outlet 22 and the hot air scattered by the heat dissipation block 4, and guide the hot air to a required position through the air duct and the blower fan air outlet 52.

The axial fan 2 has no air channel, the axial fan air inlet 21 and the axial fan air outlet 22 have infinite directions, and can be vertically installed or horizontally installed according to the internal structure of the camera 10, and only the air inlet 21 is required to suck air at a position approximately corresponding to the position.

Further, since the video camera generally includes the blower fan, the blower fan has a relatively large number of structures, and the installation is relatively complex, while the axial flow fan has a relatively small number of structures and is relatively simple to install, the axial flow fan 2 is used as an additional fan in the video camera 10 to form a double air duct with the blower fan 5 due to technical difficulty and cost.

Unlike the prior art, in this embodiment, by adding the axial fan 2 to the assembly of the lens 1, the cold air is sucked by the axial fan 2, so that the cold air blown by the axial fan 2 is mixed with the air near the heat dissipating block 4, and then the air is sucked by the blower fan 5, and the heat radiated by the camera heat source 3 and the heat dissipating block 4 is taken away to the maximum extent by using thermal convection. According to the embodiment, through the synergistic effect of the double fans, the heat dissipation of the camera heat source 3 and the heat dissipation block 4 can be accelerated, the heat dissipation efficiency is improved, and the service life of electronic elements is prolonged.

With continued reference to fig. 1, in the present embodiment, the video camera 10 includes a first bracket 11, and the axial fan 2 is disposed on a first side of the lens 1 through the first bracket 11.

Specifically, referring to fig. 2, fig. 2 is a schematic perspective view of a first bracket according to an embodiment of the camera of the present application. As shown in fig. 2, in the present embodiment, the first bracket 11 includes a first fixing plate 111, a connection portion 112, a second fixing plate 113, a first through hole 114, and a second through hole 115.

Wherein, the connecting portion 112 is respectively perpendicular to the first fixing plate 111 and the second fixing plate 113, and two ends of the connecting portion 112 are respectively connected with one end of the first fixing plate 111 and one end of the second fixing plate 113; wherein, the projection of the second fixed plate 113 on the plane of the first fixed plate 111 is not overlapped with the first fixed plate 111.

Wherein, a first through hole 114 is provided on a side of the first fixing plate 111 near the connecting portion 112, so that a bolt fastens the first bracket 11 to the deck assembly of the lens 1 through the first through hole 114. The second fixing plate 113 has a hole in the middle for accommodating the axial fan 2, and a plurality of second through holes 115 are uniformly disposed on the periphery of the hole along the circumferential direction of the hole, so that bolts fasten the axial fan 2 and the first bracket 11 through the second through holes 115, and the axial fan 2 is disposed on the first side of the lens 1 through the first bracket 11.

In this embodiment, the axial fan 2 is fixed on the first side of the lens 1 by the first bracket 11, and the axial fan air inlet 21 and the axial fan air outlet 22 form a complete air duct, so that the fan blades can be distributed in the whole air duct, and the blades push air to accelerate the air flow, thereby improving the heat dissipation effect.

With continued reference to fig. 3, fig. 3 is a partially exploded view of one embodiment of the camera of the present application. As shown in fig. 3, in the present embodiment, the axial flow fan 2 is fastened to the first bracket 11 by the bolts 12, corresponding holes are provided on the first bracket 11 for accommodating the axial flow fan 2, and second through holes 115 are provided on the axial flow fan 2, through holes 215 are correspondingly provided on the axial flow fan 2, and further, the first bracket 11 is connected to the movement assembly of the lens 1 by the bolts 12, so that the axial flow fan 2 is disposed on the first side of the lens 1 by the first bracket 11.

With continued reference to fig. 1, in this embodiment, the camera heat source 3 further includes a chip.

The chip comprises an image signal processor (Image Signal Processor, ISP), a digital signal processor (Digital Signal Processor, DSP) and a Double Data Rate SDRAM (DDR). Specifically, the ISP is configured to process output data of an Optical sensor (Optical Sensors), the restored Optical image is converted into an electrical signal, the electrical signal is converted into a digital signal through analog-to-digital conversion, the digital signal is processed by the DSP, and the finally processed image is stored in the DDR and is converted into an image that can be seen on a screen.

When the chip works, the camera heat source 3 generates a large amount of heat, and the heat dissipation block 4 is closely attached to the camera heat source 3 so as to dissipate the heat of the camera heat source 3 into the surrounding environment through radiation.

Since the second side of the lens 1 is adjacent to the first side, and the axial fan air outlet 22 is opposite to the camera heat source 3 and one end of the heat dissipation block 4 close to the second housing 9, the axial fan 2 can blow out the cold air sucked by the axial fan air inlet 21 through the axial fan air outlet 22, so as to accelerate the heat dissipation of the camera heat source 3 and the heat dissipation block 4.

With continued reference to fig. 1, in the present embodiment, the camera heat source 3 is closely attached to the heat dissipating block 4 through the heat conductive paste 32.

Wherein, camera heat source 3 dispels the heat through heat conduction mud 32 and the inseparable laminating of radiating block 4.

The heat conductive paste 32 includes silicone, a heat conductive filler, and a bonding material.

Specifically, the heat-conducting mud is a jelly which is prepared by taking silicon resin as a base material, adding a heat-conducting filler and a bonding material according to a certain proportion and processing the heat-conducting mud by a special process. In practical applications, they are also called heat conducting putty, heat conducting cement, etc. The heat conducting mud has excellent high and low temperature resistance, excellent weather resistance, radiation resistance and excellent dielectric property, is self-adhesive, does not need to use an adhesive product which does not contribute to the heat conducting property to improve the pasting property, is suitable for filling an unshaped gap, cannot deform in a static use process after being molded, and has excellent ageing resistance.

In the present embodiment, the heat conductive paste 32 is kneaded into a thin layer as required for filling between the camera heat source 3 to be cooled and the heat sink 4 so that the camera heat source 3 and the heat sink 4 are in close contact. In this way, the thermal resistance between the camera heat source 3 and the heat dissipation block 4 can be reduced, so that the camera heat source 3 can rapidly conduct generated heat to the heat dissipation block 4, thereby effectively reducing the temperature of the electronic component, prolonging the service life of the electronic device and improving the reliability thereof.

With continued reference to fig. 1, in the present embodiment, a heat sink fin 41 is disposed on a side of the heat sink 4 away from the camera heat source 3. As shown in fig. 1, the axial-flow fan air outlet 22 is disposed opposite to one end of the heat dissipating block fin 41 near the second housing 9, and the blower fan air inlet 51 is disposed opposite to one side of the heat dissipating block fin 41 away from the camera heat source 3.

In the present embodiment, the air is sucked into the axial fan air inlet 21 and blown out through the axial fan air outlet 22, and the air blown out from the axial fan air outlet 22 and the hot air emitted from the heat dissipating block fins 41 are sucked into the blower air inlet 51 and blown out through the blower air outlet 52, so that the heat of the camera heat source 3 is dissipated.

Specifically, the heat-conducting mud 32 is closely attached to the camera heat source 3 and the heat-dissipating block 4, so as to reduce the thermal resistance between the camera heat source 3 and the heat-dissipating block 4, so that the camera heat source 3 can quickly conduct generated heat to the heat-dissipating block 4, conduct heat through the heat-dissipating block 4, and increase the heat-dissipating area by utilizing the heat-dissipating block fins 41, so as to accelerate the heat dissipation of the camera heat source 3; the heat conducted by the camera heat source 3 is radiated to the surrounding environment through the radiating block fins 41, so that the air nearby the radiating block fins 41 is heated, and the heat radiated by the radiating block fins 41 has little influence on the air nearby the first side of the lens 1 because the axial flow fan 2 is arranged on the first side of the lens 1 and the camera heat source 3 and the radiating block fins 41 are arranged on the second side of the lens 1. Cool air near the first side of the lens 1 is sucked in by the axial fan air inlet 21 and blown out through the axial fan air outlet 22 to accelerate heat dissipation of the heat sink fins 41 and balance air temperature near the heat sink fins 41, and the heat flow temperature near the camera heat source 3 and the heat sink fins 41 is reduced by mixing the cool and hot air. The blower fan 5 is disposed on a side of the heat dissipating fin 41 away from the camera heat source 3, and the blower fan air inlet 51 is used for sucking the cool air blown out by the axial fan air outlet 22 and the hot air dissipated by the heat dissipating fin 41, so as to further perform air suction and heat dissipation on the heat dissipating fin 41.

In the present embodiment, the number of the heat dissipating fin 41 is at least two. Specifically, the number of the heat dissipating block fins 41 may be set according to the size of the heat dissipating block 4, and the number of the heat dissipating block fins 41 is not limited in this application.

In the present embodiment, the heat sink 4 is stacked with a plurality of heat sink fins 41 on the side far away from the camera heat source 3, and the heat sink fins 41 have a thin plate structure, and the area of the heat sink fins 41 is much larger than that of the heat sink 4, so that the heat exchange area can be effectively increased in the heat transfer process, and the heat dissipation of the electronic component can be accelerated.

Further, since the fin structure of the fin 41 has a certain uniqueness, the fluid in the tube of the fin 41 can form a severe disturbance during heat exchange, and the boundary layer can be broken continuously, so that the thermal resistance is reduced, and the heat exchange efficiency of the whole system is greatly increased.

In the present embodiment, the heat sink 4 and the heat sink fins 41 are formed by injection molding.

Unlike the prior art, in this embodiment, by adding the axial fan 2 to the assembly of the lens 1, the cold air is sucked by the axial fan 2, so that the cold air blown by the axial fan 2 is mixed with the air near the heat dissipating fin 41, and then the air is sucked by the blower fan 5, and the heat radiated by the camera heat source 3 and the heat dissipating fin 41 is taken away to the maximum extent by using heat convection. The present embodiment can accelerate the heat dissipation between the camera heat source 3 and the heat dissipation block fins 41 by the synergistic effect of the double fans, thereby improving the heat dissipation efficiency and prolonging the service life of the electronic components.

With continued reference to fig. 1, in this embodiment, the camera 10 further includes a blower fan duct 6. As shown in fig. 1, the blower fan duct 6 includes a duct bracket (not shown) such that the blower fan 5 is fixed in the blower fan duct 6 by the duct bracket, and the blower fan duct 6 is fixed to the housing by the second bracket 61.

With continued reference to fig. 1, in this embodiment, camera 10 further includes a window glass 7. As shown in fig. 1, the window glass 7 is disposed on the surface of the first housing 8 and opposite to the lens 1.

In this embodiment, the window glass 7 is also located at one side of the outlet of the blower fan duct 6.

The blower fan duct 6 is disposed opposite to the window glass 7 at a predetermined angle, so that the hot air guided out through the blower fan duct 6 can be blown toward the window glass 7 through the conduction channel to defog the window glass 7.

Specifically, when the ambient temperature of the camera is rapidly reduced, the surface temperature of the window glass used by the camera is also reduced, and the hot and humid air in the camera can be fogged on the inner surface when encountering the cold window glass, so that the images of the camera are abnormal.

In the existing method for defogging a glass pane, for example, manual wiping is used for defogging, however, a situation that traces are left after wiping often occurs, and further the effect of shooting by a lens is affected. Or, through installing a sheath additional on the camera lens, one end of sheath overlaps on the camera lens, the other end is tightly supported on the transparent glass of front bezel, form sealed passageway between camera lens and the front bezel glass, thereby separate the space between front bezel transparent glass, camera lens and sheath, the camera, transparent glass's temperature just forms the temperature unanimity in the sealed passageway with camera lens, transparent glass, sheath three, the steam in the air in the sheath just can not condense on transparent glass inner wall and form water smoke, and influence the normal shooting function of camera, however, this kind adopts the mode of mechanical additional installation device, because one deck transparent glass more, just itself influences photographic quality, and transparent glass itself also easily congeals into water smoke, influence the shooting. Or, set up the fan that is used for the defogging specially in the camera is inside, make the fan blow to camera lens direction through opening the instruction and dispel the heat defogging, however, additionally increase the fan and carry out the defogging, can make the camera consume more, do not accord with green's design requirement, be unfavorable for reducing the energy consumption of camera.

In this embodiment, through the angle of design blast fan wind channel 6's export and window glass 7, can make the hot-blast blowing out through blast fan wind channel 6 blow window glass 7 through switching on the passageway, through the moisture stoving around the window glass 7 of thermal convection, prevent window glass 7 fog to realize defogging function.

In other embodiments, the angle between the outlet of the blower fan duct 6 and the window glass 7 may be not set, and a communication channel may be established between the outlet of the blower fan duct 6 and the window glass 7, for example, a section of duct may be added, and the hot air discharged from the blower fan duct 6 may be guided to the window glass 7 through the duct, so as to dry the moisture around the window glass 7 by thermal convection, to prevent the window glass 7 from fogging, thereby implementing a defogging function.

Through the mode, the embodiment does not need to additionally adopt a fan to defog the window glass 7, can furthest utilize the heat generated by the camera heat source 3, and solves the problem that the window glass forms water mist under the condition of not increasing the energy consumption of the camera so as to facilitate the follow-up smooth shooting.

Referring to fig. 4, fig. 4 is a schematic perspective view of a housing in an embodiment of a camera according to the present application. As shown in fig. 4, in the present embodiment, the first housing 8 and the second housing 9 are both hemispherical in shape.

Wherein, the shape of first casing 8 and second casing 9 all set up to the hemisphere, are favorable to increasing heat conduction area of contact to make the inside hot air of camera 10 pass through the shell and dispel the heat to the external environment through the radiation, thereby further promote radiating efficiency.

Referring to fig. 5, fig. 5 is a schematic view of a heat flow cycle in an embodiment of the camera of the present application. As shown in fig. 5, in the present embodiment, the camera 10 includes: the device comprises an axial flow fan air suction area A, an axial flow fan air outlet area B, a camera heat source heat dissipation area C, a blower fan air suction area D, a blower fan air outlet area E and a window glass defogging area F.

In this embodiment, the heat-conducting mud 32 is kneaded into a thin layer as required, and is used for being filled between the camera heat source 3 and the heat dissipation block 4 to be cooled, so as to reduce the thermal resistance between the camera heat source 3 and the heat dissipation block 4, so that the camera heat source 3 and the heat dissipation block 4 are closely contacted and the generated heat is quickly conducted to the heat dissipation block 4, the heat dissipation block 4 conducts heat, the heat dissipation area is increased by using the heat dissipation block fins 41, and the camera heat source heat dissipation area C is formed, wherein the air around the camera heat source heat dissipation area C is heated into hot air due to the radiated heat. Since the axial fan 2 is disposed on the first side of the lens 1, and the camera heat source 3 and the heat dissipating fin 41 are disposed on the second side of the lens 1, the heat radiated by the heat dissipating fin 41 has less influence on the air near the first side of the lens 1, i.e. the air near the air suction area a of the axial fan is still cool air, and the air suction opening 21 of the axial fan can suck the cool air in the air suction area a of the axial fan and blow the cool air to the air outlet area B of the axial fan through the air outlet 22 of the axial fan. The cool air in the axial flow fan air-out area B is mixed with the hot air in the camera heat source heat radiation area C to lower the heat flow temperature in the vicinity of the camera heat source 3 and the heat radiation block fins 41. The blower fan 5 is disposed on a side of the heat dissipating fin 41 away from the camera heat source 3, and the blower fan suction port 51 is used for sucking the mixed air in the blower fan suction area D to further suck and dissipate the heat of the camera heat source heat dissipating area C. Further, the blower fan duct 6 is disposed opposite to the window glass 7 at a predetermined angle, so that the mixed air in the blower fan area E is guided out through the blower fan duct 6 and then can be blown to the window glass defogging area F through the conduction channel to defog the window glass 7.

In this embodiment, a clockwise heat flow circulation system is formed by using the axial fan 2, the heat-conducting mud 32, the heat dissipation block 4, the heat dissipation block fin 41, the blower fan 5 and the blower fan duct 6, so that the cold air sucked from the axial fan suction area a can be mixed with the hot air in the camera heat source heat dissipation area C, the heat flow temperature near the camera heat source 3 is reduced, the mixed air in the blower fan suction area D is sucked and blown out through the blower fan 5, the circulation speed of heat flow is accelerated, and then the mixed air in the blower fan suction area E is guided to the window glass defogging area F through the blower fan duct 6, so that the mixed air window glass 7 is dried and defogged, and the heat flow temperature is further reduced. Through the mode, the heat flow temperature of the cavity near the camera heat source 3 can be effectively reduced, the defogging function of the window glass 7 is realized, and the service life of the electronic element is prolonged.

Compared with the prior art, the camera heat source and the heat dissipation block are taken away to the greatest extent by utilizing heat convection by adding the axial flow fan on the lens assembly and sucking cold air by utilizing the axial flow fan so as to mix the cold air blown out by the axial flow fan with hot air nearby the camera heat source and further sucking air by utilizing the blower fan; further, this application can make the hot air of leading out through the blast fan wind channel blow window glass through switching on the passageway, furthest utilizes the heat that the camera heat source produced, under the circumstances that does not additionally increase defogging device, solves window glass and forms the problem of water smoke to realize defogging function.

The foregoing description is only of embodiments of the present application, and is not intended to limit the scope of the patent application, and all equivalent structures or equivalent processes using the descriptions and the contents of the present application or other related technical fields are included in the scope of the patent application.

Claims (8)

1. A video camera, comprising:

a housing including a first housing and a second housing connected to each other;

a lens fixed on the first housing;

the axial flow fan is arranged on the first side, close to the second shell, of the lens, and comprises an axial flow fan air inlet and an axial flow fan air outlet; the camera comprises a first bracket, and the axial flow fan is arranged on the first side of the lens through the first bracket;

a camera heat source disposed on a second side of the lens, the second side being adjacent to the first side;

the heat dissipation block is arranged on one side of the camera heat source, which is away from the lens; the axial flow fan air outlet and one end of the heat dissipation block, which is close to the second shell, are oppositely arranged;

a blower fan arranged opposite to one side of the heat dissipation block away from the camera heat source; the blowing fan comprises a blowing fan air suction port and a blowing fan air outlet, and the blowing fan air suction port and the radiating block are arranged oppositely;

the camera further comprises a window glass, wherein the window glass is arranged on the surface of the first shell and is opposite to the lens; wherein the window glass is positioned at one side of the air blowing fan-out opening;

the cooling device comprises an axial flow fan, a cooling block and a blast fan, wherein the axial flow fan, the cooling block and the blast fan form a heat flow circulation system, a wind outlet of the axial flow fan blows cold air sucked by a wind suction inlet of the axial flow fan to the cooling block, the cold air is mixed with hot air near a heat source of a camera, and the wind outlet of the blast fan blows mixed air to window glass to dry and defog the window glass.

2. The camera of claim 1, wherein the camera heat source further comprises a chip.

3. The camera of claim 1, wherein the camera heat source is attached to the heat sink by a heat conductive paste.

4. A camera according to claim 3, wherein the thermally conductive paste comprises silicone, a thermally conductive filler, and a bonding material.

5. The camera of claim 1, wherein a side of the heat sink away from the camera heat source is provided with a heat sink fin, the axial fan air outlet is disposed opposite to an end of the heat sink fin near the second housing, and the blower fan air inlet is disposed opposite to a side of the heat sink fin away from the camera heat source.

6. The camera of claim 5, wherein the number of heat sink fins is at least two.

7. The camera of claim 1, further comprising a blower fan duct including a duct bracket such that the blower fan is secured within the blower fan duct by the duct bracket, the blower fan duct being secured to the housing by a second bracket.

8. The camera of claim 1, wherein the first housing and the second housing are each hemispherical in shape.