JP2009200912A - Camera - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a monitor camera having a sealed camera casing for waterproofing and dust-proofing and a heat radiation structure improved in heat radiation property. <P>SOLUTION: A hole is provided to the side surface of the camera casing, a heat radiating fin is mounted which is also used as the cover of the hole, and electronic components packaged on a printed circuit board constituting the inside of a monitor camera are mounted on the fin base of the heat radiating fin via a flexible heat conduction rubber. Thus, heat of the electronic components is efficiently radiated to the outside of the camera casing, a shade cover that is also used as an outer case is provided to the outer periphery of the camera casing, thereby obtaining the monitor camera also improved in design, and at the same time, by providing optimal openings at upper and lower positions of the heat radiating fin attached to the side surface of the camera casing on the shade cover, heat transfer due to natural convection in the heat radiating fin part is not disturbed, thereby obtaining the monitor camera improved in heat radiation property. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a heat dissipation structure for a camera, and more particularly to a heat dissipation structure for a camera having a sealed housing.

  The heat dissipation structure of a camera with a conventional sealed camera housing is designed to radiate heat into the atmosphere inside the camera housing by attaching small heat-dissipating fins as needed to each electronic component mounted on the printed circuit board in the camera housing. Or a structure in which an electronic component is brought into close contact with the inner wall of the camera housing via a heat conductive rubber and thermally diffused to the wall surface of the camera housing to dissipate heat.

Japanese Utility Model Publication No. 6-70373

Among the above-described conventional technologies, the former has become difficult to obtain a thermally reliable heat dissipation structure due to further downsizing, higher functionality, and higher density of recent surveillance cameras.
On the other hand, in the latter, in order to obtain a heat-reliable structure with high thermal reliability, it is necessary to improve the heat dissipation by increasing the outer dimensions of the camera housing and increasing the surface area of the camera housing. Not suitable for
In view of the above-described problems, an object of the present invention is to obtain a small camera that is not hindered by heat transfer due to natural convection at a radiating fin portion and has excellent heat dissipation.

In order to achieve the above object, a camera having a sealed casing according to the present invention includes a sealed camera casing having a hole provided on a side surface of the camera casing and a radiating fin attached to cover the hole. It is provided.
Preferably, the camera having the sealed casing of the invention includes a flexible heat conductive rubber for attaching the fin base of the heat radiating fin and an electronic component mounted on a printed circuit board in the sealed camera casing. The heat generated by the electronic component is directly radiated to the radiation fins without passing through the wall surface of the sealed camera casing.
Preferably, the camera having the sealed casing of the present invention includes a sunshade that also serves as an outer case provided on an outer periphery of the camera casing, and the heat dissipation attached to a side surface of the camera casing of the sunshade cover. This is provided with slit-like openings having the same pitch as the heat dissipating fins provided at the upper and lower positions of the fins.

  According to the present invention, it is possible to provide a camera having a sealed casing having a small and highly efficient heat dissipation structure.

The present invention provides a camera having a sealed camera casing, the printed camera board having an electronic component mounted on the printed circuit board, and the electronic component of the sealed camera casing being mounted in the sealed camera casing. And a heat dissipating fin provided on the side surface of the sealed camera housing that also serves as a cover that seals and closes the hole.
Preferably, the camera includes a sunshade cover having an opening with a predetermined pitch at an upper and lower position of the heat dissipating fin outside the sealed camera housing, and the pitch of the opening of the sunshade cover is determined by the heat dissipation. The same pitch as the fin pitch of the fins.
In the camera, preferably, the electronic component and the heat radiating fin are attached via a flexible heat conductive rubber.
In this manner, the camera of the present invention has a highly efficient heat radiating structure without disposing natural convection in the heat radiating fin portion by disposing the gaps between the fins of the heat radiating fin in the opening of the slit.

  Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. In each figure, components having common functions are denoted by the same reference numerals, and description thereof is avoided as much as possible to avoid duplication.

  FIG. 1 is a perspective view showing an appearance of a surveillance camera according to an embodiment of the present invention. Reference numeral 100 denotes a monitoring camera, 10 denotes an awning cover that also serves as an external housing of the monitoring camera 100, and 11 a and 11 b denote openings provided in the awning cover 10. FIG. 2 is a perspective view showing the camera body inside the sunshade cover 10 of the surveillance camera 100 shown in FIG. Reference numeral 200 denotes a camera body, and 3 denotes a housing of the camera body. FIG. 3 is an exploded perspective view showing the external configuration of the monitoring camera 100 shown in FIG. 1 and the configuration of the camera body 200 inside the monitoring camera 100. 4 is a side hole of the camera body 200, 5 is a heat radiating fin, 6a is a heat radiating fin base a, 6b is a heat radiating fin base b, 7 is a heat conductive rubber, and 9 is a printed circuit board. Further, FIG. 4 is an exploded perspective view showing the configuration of the side surface of the camera body 200 shown in FIG. Reference numeral 8 denotes an electronic component mounted on the printed circuit board 9. FIG. 5 is a front sectional view of the monitoring camera 100 shown in FIG. 11c and 11d are openings. 6 is a top cross-sectional view (A-A cross-sectional view in FIG. 5) of the monitoring camera 100 shown in FIG. Reference numeral 12 denotes a radiating fin pitch, 13 denotes an opening slit pitch, and 14 denotes a radiating fin gap.

  1 to 6, a camera 100 is a surveillance camera that can be used outdoors. This surveillance camera 100 is provided with a sunshade cover 10 on the outer periphery of the camera main body 200, and heat radiation fins 5 are attached to the side surfaces of the housing 3 of the camera main body constituting the camera main body 200.

  The housing 3 of the camera body is provided with a side hole 4 on the side surface, and a heat radiating fin 5 is attached to the side hole 4. A heat dissipation fin base 6b is attached to the heat dissipation fin base 6a of the heat dissipation fin 5, and the heat dissipation fin base 6b attaches the electronic component 9 mounted on the printed circuit board 9 inside the camera body 200 of the surveillance camera 100, It is attached via a heat conductive rubber 7.

The sunshade cover 10 attached to the outer periphery of the camera body 200 is provided with openings 11a, 11b, 11c, and 11d. The openings 11 a, 11 b, 11 c, and 11 d are provided with slits, and the opening slit pitch 13 is the same as the radiating fin pitch 12 of the radiating fin 5 attached to one side surface of the camera housing 3. The heat radiation fin gaps 14 of the fins of the heat radiation fins are disposed in the respective opening portions of the slits.
In the above embodiment, the heat radiating fins 5 are provided on one side surface of the camera body. Accordingly, as described above, the opening portions 11a and 11c on the side surface side have the same opening slit pitch 13 as that of the heat radiation fin pitch 12 of the heat radiation fin 5, and the other side surface side opening portions 11b and 11d have opening slits. The pitch 13 may be different from the radiating fin pitch 12 of the radiating fin 5.

The radiating fin base 6b may be structured to be attached to the radiating fin base 6a as a separate component from the radiating fin 5, or the radiating fin base 6b may be a structure integrated with the radiating fin 5.
In this embodiment, the heat conductive rubber is used. However, it is not necessary to use rubber, and a similar organic material (for example, heat conductive resin) may be used. Furthermore, the heat conductive rubber in the present embodiment does not need to be solid, and may be heat conductive grease or other materials, as long as the heat resistance between the heat dissipating fin base 6b and the electronic component 8 is reduced.

  According to the above embodiment, as a heat dissipation structure of the surveillance camera, a hole is provided on the side of the camera casing, and a heat dissipation fin serving as a cover for sealing and closing the hole is attached. By attaching the electronic components mounted on the printed circuit board inside the body via flexible heat conductive rubber, and radiating the heat of the electronic components directly to the radiation fins without going through the housing wall surface, A highly efficient heat dissipation structure is obtained. For this reason, the camera casing can be downsized and the camera casing is a sealed camera casing. Therefore, it is possible to obtain a surveillance camera that is excellent in waterproofness and dustproofness and excellent in reliability over a long period of time.

Furthermore, according to the above embodiment, as a heat dissipation structure of the surveillance camera, by providing a sunshade cover that also serves as an outer case on the outer periphery of the camera casing, the heat dissipation fins attached to the side of the camera casing are covered and designed. Even better surveillance cameras can be obtained.
Furthermore, by providing slit-shaped openings with the same pitch as the radiation fins at the upper and lower positions of the radiation fins attached to the side of the camera casing of the sunshade cover, and arranging the gaps between the fins of the radiation fins in the slit openings. The air flow at the radiating fin portion is not hindered, and a highly efficient heat radiating structure can be obtained even under hot weather.

The perspective view which shows the external appearance of the surveillance camera of one Example of this invention. The perspective view which shows the surveillance camera main body of one Example of this invention. The disassembled perspective view which shows the internal structure of the surveillance camera of one Example of this invention. The disassembled perspective view which shows the internal structure of the surveillance camera main body of one Example of this invention. The front sectional view of the surveillance camera of one example of the present invention. 1 is a top sectional view of a surveillance camera according to an embodiment of the present invention.

Explanation of symbols

  1: External housing, 3: Camera body housing, 4: Side hole, 5: Radiation fin, 6a: Radiation fin base a, 6b: Radiation fin base b, 7: Thermally conductive rubber, 8: Electronic component, 9: Printed circuit board, 10: Awning cover, 11a, 11b, 11c, 11d: Opening, 12: Radiation fin pitch, 13: Opening slit pitch, 14: Radiation fin gap, 100: Surveillance camera, 200: Camera body.

Claims (1)

In a camera having a sealed camera housing,
In the sealed camera housing, it has a printed circuit board and electronic components mounted on the printed circuit board,
A hole provided in a side surface on which the electronic component of the sealed camera housing is mounted;
A camera, comprising: a heat radiating fin provided on a side surface of the sealed camera casing so as to serve as a cover for sealing the hole.

Images