JPH07264450A - Heat dissipating structure for video camera - Google Patents

Abstract

PURPOSE:To warrant the quality for a long period and to avoid a large size for for the camera. CONSTITUTION:Third heat conductive rubber 75 is interposed among electronic components E1-E4 on printed circuit boards 12a--12d and wall plates 3-6. Thus, the heat generated from the electronic components E1-E4 on the printed circuit boards 12a-12d opposite to upper and lower wall plates 3, 4 and left and right wall plates 5, 6 is delivered to each of the wall plates 3-6 via the 3rd heat conductive rubber 75 and dissipated from each of the wall plates 3-6 into air at the outside of a camera case 7, then it is not required to provide a duct to the camera case as a heat dissipation structure or to increase an outer size of the camera case different from a conventional video camera.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat dissipation structure of a video camera suitable for use in, for example, factory automation equipment (FA equipment).

[0002]

2. Description of the Related Art In recent years, a video camera having a CCD (charge transfer device) is often used as an image pickup device because it has excellent characteristics and is suitable for mass production.

Conventionally, this type of video camera has a CCD
A camera housing with a built-in camera and a camera mounting surface, a screw hole that is attached to the front end of the camera housing and opens in the optical axis direction (front-back direction), and a lens barrel attachment that is exposed at the opening periphery of the screw hole A front panel having a surface and a lens barrel having an opening end face that is screwed into a screw hole of the front panel and is in contact with the lens barrel mounting surface are employed.

In the video camera thus constructed, as shown in FIGS. 10A and 10B, a motherboard (hereinafter referred to as "MB") is provided in the camera housing 100.
A plurality of printed circuit boards 102 including a substrate 101 and a mother board 1 arranged in parallel with these printed circuit boards 102.
DC / DC converter unit 1 mounted on 01
03 is stored.

Of these, the DC / DC converter unit 103 is a rectangular box body 104 formed of a shield case such as tin plate, and the M box provided in the rectangular box body 104.
The printed circuit board 105 is connected to the B board 101.

In the figure, reference numerals 106 and 107 denote a BI board on which a CCD 108 as an image pickup device is mounted and a CN board on which a connector 109 for external connection is mounted. Reference numeral 110 denotes a lens cylinder detachably provided in the front opening of the camera housing 100 and having a plurality of lenses (not shown).

By the way, in this type of video camera, C is caused by a temperature rise in the camera housing due to use of the camera.
In order to prevent failure and performance deterioration of electronic components including a CD, a structure in which a vent is provided in the camera housing or a structure in which heat is dissipated from a wall plate of the camera housing is adopted.

[0008]

However, in the former case (the structure in which the vent is provided in the camera housing), the inside and outside of the camera housing are communicated with each other. Intrudes, electronic components break down,
Alternatively, there is a problem that quality cannot be guaranteed for a long period of time due to performance deterioration.

On the other hand, in the latter case (structure for dissipating heat from the wall plate of the camera housing), it is necessary to set the outer dimensions of the camera housing to a considerably large size in order to obtain an effective heat dissipation structure. However, there is a problem that the entire camera becomes large.

The present invention has been made in view of the above circumstances, and provides a heat dissipation structure for a video camera, which can guarantee the quality for a long period of time and prevent an increase in the size of the entire camera. To do.

[0011]

According to the present invention, there is provided a heat dissipation structure for a video camera, which includes a camera housing having an upper and lower wall plates and left and right wall plates and a built-in image pickup element, and upper and lower wall plates and left and right walls in the camera housing. A circuit board provided so as to face the plate and having electronic components mounted thereon, and a heat conductive rubber is interposed between each electronic component on each of these circuit boards and each wall plate.

[0012]

According to the present invention, the heat generated from the electronic components on the circuit boards facing the upper and lower wall plates and the left and right wall plates is transmitted to the respective wall plates through the heat conductive rubber, and the wall plates cause camera housing. It is released into the atmosphere outside the body.

[0013]

Embodiments of the present invention will be described in detail below with reference to embodiments shown in the drawings.

FIG. 1 is a sectional view showing a main part of a heat dissipation structure of a video camera according to the present invention, FIGS. 2A and 2B are a plan view and a bottom view showing the video camera, and FIGS. C) is a front view, rear view, and right side view showing the video camera, FIG. 4 is a perspective view showing the appearance of the video camera, FIG. 5 is an exploded perspective view showing the entire video camera, FIGS. 6A and 6B. ) Is a longitudinal sectional view and a lateral sectional view showing the video camera, FIG. 7 is a sectional view showing the vicinity of the image pickup element of the heat dissipation structure of the video camera, FIG. 8 is a perspective view showing an arrangement state of each circuit board of the video camera, and FIG.
FIG. 10 is a cross-sectional view showing the front plate of the video camera, in which a part of the same member (CC) as in FIGS.
(D, connector) are given the same symbols.

In FIG. 1, reference numeral M denotes a high-definition video camera, which has a main body 1 having a substantially rectangular parallelepiped appearance, and a plurality of lenses 2a detachably provided on the front surface of the main body 1. And the lens barrel 2.

[Main Body of Video Camera] This main body 1 has a camera housing 7 having upper, lower, left and right wall plates 3 to 6 facing each other and opening in the front-rear direction, and a front opening of the camera housing 7. Mounted on the front plate 8 having a screw hole 8a for mounting a lens as a through hole opened in the optical axis direction, and a front plate provided on the rear side of the front plate 8 and mounted on the rear opening of the camera housing 7. Through hole 9 for external connection that opens on both sides
And a rear face plate 10 having the above structure, and is entirely formed by an aluminum die casting or zinc die casting method.

[Case] The camera case 7 has a CCD 11 as an image pickup device for receiving an optical image taken by the lens 2a and a plurality of printed circuit boards 12 (12a to 12f) connected to the CCD 11. ing.

The upper wall plate 3 of the wall plates 3 to 6 of the camera housing 7 vertically penetrates a stepped hole 13 for mounting a metal fitting, which is opened on both front and back sides, and a stepped portion 13a of the stepped hole 13. cross section substantially U that the back of the panel has a screw hole 13b of the mounting screw a is screwed into the forward end faces the printed circuit board 12a formed by mounting electronic components E ₁ of the printed circuit board 12a~12f It is formed by a letter-shaped upper panel.

The stepped hole 1 is formed at the front edge of the upper wall plate 3.
A flat first upper camera mounting surface 1 including the outer peripheral edge of 3
4 is formed, and a flat second upper camera mounting surface 15 located on the same surface as the first upper camera mounting surface 14 is formed at the rear edge.

A radiating fin 16 is provided between the upper camera mounting surfaces 14 and 15 of the upper wall plate 3 by forming a concavo-convex portion extending in the front-rear direction and parallel to the left-right direction. .

The front and rear edges of the upper wall plate 3 are arranged in parallel with each other at a predetermined distance in the left-right direction and are respectively arranged on the first camera mounting surface 14 and the second camera mounting surface 15. Screw holes 17 and 18 for camera mounting to open
Is provided.

Further, on the back sides of both side portions of the upper wall plate 2,
It has a panel mounting screw hole 19a which is opened in the front-rear direction and into which the mounting screws b and c are screwed, and a side plate mounting screw hole 19b which is opened in the left-right direction and into which the mounting screw d is screwed and extends in the front-rear direction. The mounting portion 19 is integrally provided.

On the other hand, the lower wall plate 4 of the camera housing 7 has a frame portion 2 facing the printed circuit board 12b of the printed circuit boards 12.
0 and a main brazing panel having a notch 21 located in front of the frame 20 and having a substantially U-shaped cross section.

At the rear end edge of the lower wall plate 4, there are screw holes 22 for camera mounting which are located at a predetermined interval in the left-right direction and open downward, and extend in the left-right direction including the peripheral edges of these screw holes 22. A flat second lower camera mounting surface 23 is formed.

The radiating fins 24 are formed on the front portion of the second lower camera mounting surface 23 of the lower wall plate 4 by forming an uneven portion extending in the front-rear direction and juxtaposed in the left-right direction.
Is provided.

The lower wall plate 4 has the cutout 21.
Is formed with a stepped surface 4a having a U-shape in a plan view extending along the peripheral edge of the inner opening.

Further, on both sides of the lower wall plate 4, mounting screws e, which are opened in the axial direction of the screw holes 19a, 19b, are provided.
Mounting having screw holes 25a, 25b into which f is screwed, a screw hole 25c for holder mounting in which the mounting screw g is screwed, and a positioning pin 25d protruding in the same direction as the opening direction of the screw hole 25c. The part 25 is integrally provided.

It should be noted that the electronic component E ₂ exposed inside the frame 20
The printed circuit board 12b on which the component mounting surface is mounted is disposed at a portion where the component mounting surface faces the back surface of the lower wall plate 4.

Next, the side wall plates 5 and 6 of the wall plates 3 to 6 of the camera housing 7 will be described.
Are side plates 26 and 27 with which the upper edge and the lower edge contact the both mounting portions 19 and 25, respectively, and base pieces 28a and 29a having rear surfaces facing the outer side surfaces of these side plates 26 and 27, and these base pieces. 28a, 29a, the side panel is composed of heat radiating plates 28, 29 having two side pieces 28b, 29b connected to each other.

These side plates 26, 27 and heat sink 28,
Since 29 are configured substantially the same, only one of them (the side plate 26 and the heat radiating plate 28) will be described. In the side plate 26, screw insertion holes 26a, which are open on both front and back surfaces (both inner and outer surfaces),
26b and a positioning hole 26c are provided.

A print formed by mounting an electronic component E ₃ (in the case of the side plate 27, an electronic component E ₄ ) of the printed boards 12a to 12f at a portion facing the back surface of the side plate 26 (similarly to the side plate 27). A board 12c (a printed board 12d in the case of the side plate 27) is arranged.

Further, the heat dissipation plate 28 is provided with two opening portions 31 and 32 which are adjacent to each other with a partition portion 30 therebetween, straddling the base piece 28a and the side piece 28b.

The heat dissipation plate 28 has a plurality of columns 33, 34 protruding from the rear surface of the base piece 28a and arranged in parallel along the upper and lower edges, and the columns 33, 34.
There are provided two heat transfer blocks 35 (only one is shown) that project in the same direction as the projecting direction of and are arranged in parallel in the front-rear direction with a predetermined interval.

The columns 33 and 34 of the heat radiating plate 28 are flat tip surfaces 33a and 34 which are in contact with the outer surface of the side plate 26.
It is formed by a cylinder having a.

Of these, the pillar 33 has a screw insertion hole 3 through which the mounting screw d is continuously inserted into the screw insertion hole 26b.
3b is provided.

Further, a mounting screw h is attached to the column 34 (a part).
Is a screw hole 34 through which the screw insertion hole 26a is inserted and screwed.
b is provided.

On the other hand, the heat transfer block 35 of the heat sink 28
Is the same as the columns 33 and 34, has two flat tip surfaces 36a that are in contact with the outer side surface of the side plate 26, and each has two convex portions 36 that are juxtaposed in the vertical direction with a predetermined interval, and between these convex portions 36. It is formed by the reinforcing ribs 37 interposed between.

Of the protrusions 36 of the heat transfer block 35, a protrusion 38 facing the positioning hole 26c is integrally provided on the tip surface 36a of the lower protrusion 36.

[Front Plate] The front plate 8 has the screw holes 8
A substantially rectangular box with a bottom that has a flat lens barrel mounting surface 8b exposed on the outer peripheral edge of the inner and outer openings of a and screw insertion holes 8c, 8d through which the mounting screws b, e are inserted It is formed by a front panel.

On the rear surface of the front plate 8, two block bodies 39 and 4 are arranged in parallel with each other in the left-right direction at a predetermined interval and project in the vicinity of the inner opening of the screw hole 8a.
0 are integrally provided, and both block bodies 39,
First positioning pins 41 and 42, which are arranged in parallel with each other in the vertical direction at a predetermined interval in the vertical direction and project rearward, and screw holes into which mounting screws i are screwed and are located between the first positioning pins 41 and 42. 43 and 44 are provided.

On the back surface of the front plate 8, there is provided a second positioning pin 45 projecting rearward, and the both block bodies 3 are provided.
Of the reference numerals 9 and 40, a post 46 connected to the upper end of the left block body 39 and a second positioning pin 47 protruding rearward like the second positioning pin 45 are provided and are located below the right block body 40. The support column 48 is integrally provided.

The rear surface of the front plate 8 (camera housing 7
A printed circuit board 12e on which the electronic component E ₅ (CCD 11) of the printed circuit board 12 is mounted is arranged at a portion facing the inner surface).

At the lower edge of the opening edge of the front plate 8, an end plate 49 having a stepped surface 49a facing the stepped surface 4a and facing the notch 21 is integrally provided. There is.

The end plate 49 has a stepped hole 50 for mounting a metal fitting, which is open on both front and back surfaces, and a stepped portion 50a of the stepped hole 50.
Is formed by a sub-row panel having a screw hole 51 penetrating in the vertical direction at the rear end thereof and into which a mounting screw j is screwed.

On the surface of the end plate 49, the stepped hole 50 is formed.
A second lower camera mounting surface 52 including the outer opening peripheral edge and being perpendicular to the lens mounting surface 8b is formed.

Further, the end plate 49 is provided with a positioning hole 53 opening to the second lower camera mounting surface 52 and a camera mounting screw hole 54 opening downward.

[Rear Plate] The rear plate 10 is formed by a substantially rectangular box-shaped rear panel having a screw insertion hole 10a through which the mounting screw c is inserted and opening to the front.

The printed circuit boards 12a to 1 are provided in a portion facing the rear surface of the rear plate 10 (inner surface of the camera housing 7).
Of the 2f, the printed circuit board 12f on which the electronic component E ₆ (connector 109) is mounted is arranged.

"Lens barrel of video camera" This lens barrel 2 includes two front and rear cylindrical bodies 2 having different sizes.
b, 2c.

The lens 2a is built in the front cylindrical body 2b of the two cylindrical bodies 2b, 2c of the lens barrel 2, and the screw hole 8a is exposed to the rear cylindrical body 2c.
A screw portion 55 that is screwed inside is provided.

Reference numeral 56 designates a light transmitting window 56a which opens in the front-rear direction.
And a CCD holder having a substantially rectangular shape in plan view, which has a ring 56b projecting from the front opening edge of the light transmitting window 56a. The CCD holder is provided inside the camera housing 7 and fixed to the tip surfaces of the block bodies 39 and 40. And is entirely formed by aluminum die casting or zinc die casting.

The left and right edges of the CCD holder 56 are provided with first pin holes 57, 58 and second pin holes 59, 60 facing the first positioning pins 41, 42 and the second positioning pins 45, 47. A screw insertion hole 61 through which the mounting screw i is inserted is provided between the two first pin holes 57 and 58.

Further, on the rear end face of the CCD holder 56, two CCD positioning pins 62 juxtaposed in parallel with a predetermined interval in the left-right direction and projecting rearward and these CCs
A screw hole 63 (only one of which is shown) is provided above the D positioning pin 62 and into which a mounting screw k for inserting the package 11a of the CCD 11 is screwed.

Reference numeral 64 denotes a heat transfer plate for heat dissipation, which is fixed to the CCD holder 56 via the CCD 11 so as to face the opening surface of the screw hole 8a, and entirely faces the back surface of the package 11a. The base piece 64a and side pieces 64b and 64c that are bent and formed on both side edges of the base piece 64a and face the back surfaces of the side plates 26 and 27 are formed of an aluminum plate having a U-shaped cross section.

In the base piece 64a of the heat transfer plate 64, there are two screw insertion holes 65 (only one is shown) which are located at a predetermined interval in the left-right direction and through which the mounting screws k are inserted, and these screw insertion holes 65. Two pin holes 66 (only one of which is shown) which is located below and faces the CCD positioning pin 62 are provided.

Further, the base piece 64a of the heat transfer plate 64 is provided with a through window 67 which opens in the axial direction of the screw insertion hole 61 and the screw holes 43 and 44.

On the other hand, the side pieces 64b of the heat transfer plate 64,
The 64c is provided with rubber positioning pins 68 and 69 protruding toward the back surfaces of the side plates 26 and 27.

Reference numeral 70 is a bottomed rectangular box-shaped substrate holder having holder mounting pieces 70a and 70b on both left and right edges thereof, and is fitted in the upper opening of the frame portion 20 and the mounting screw f is attached to the mounting portion 25. The printed circuit boards 12 of the printed circuit boards 12a, 12c and 12d are held by the above-mentioned structure.

A holder mounting piece 7 of this substrate holder 70
0a and 70b, a screw insertion hole 71 through which the mounting screw g is inserted and a pin hole 72 through which the positioning pin 25d faces.
Is provided.

Reference numeral 73 denotes a pin hole 73a exposed by the positioning pin 62 and a screw insertion hole 73 through which the mounting screw k is inserted.
b is a first heat conductive rubber having a rectangular shape in a plan view, which is interposed between the base piece 64a of the heat transfer plate 64 and the back surface of the package 11a, and is entirely made of silicon containing a conductive material ( Si) made of rubber.

Reference numeral 74 denotes a second heat conductive rubber having a rectangular shape in plan view, which has a pin hole 74a exposed by the rubber positioning pins 68 and 69 and rectangular holes 74b located on both sides of the pin hole 74a. It is made of a reinforced conductive sheet containing glass fibers, and is interposed between each side piece 64b, 64c of the heat transfer plate 64 and the back surface of each side plate 26, 27.

Reference numeral 75 denotes a third heat conductive rubber having a square shape in a plan view (or a rectangular shape in a plan view), and like the second heat conductive rubber 74, is made of conductive silicone rubber and a reinforcing conductive sheet containing glass fibers. , The printed circuit board 12c,
Electronic parts E ₃ and E ₄ on 12d (electronic parts package)
And the back surface of each of the side plates 26, 27 (the back surface of the upper wall plate 3).

The third heat conductive rubber 75 is used for the electronic components E ₁ and E on the printed circuit boards 12a and 12b.
₂ (a package of electronic components) and the back surfaces of the upper and lower wall plates 3 and 4 respectively.

Reference numeral 76 denotes a fourth heat conductive rubber having a substantially square shape in a plan view, which is formed on the outer side surfaces of the side plates 26 and 27 and the convex portions 36.
The first heat-conductive rubber 73 and the first heat-conductive rubber 73 are formed of silicon rubber mixed with a conductive material.

The fourth heat conductive rubber 76 is provided with an opening 76a through which the protrusion 38 is inserted.

It is desirable that the electronic component E that contacts each of the heat conductive rubbers 73 to 76 is an electronic component that generates a large amount of heat.

Reference numeral 77 is a first metal fitting for mounting a camera, which has a base portion 78 having a screw hole 78a opening upward and through which the stepped hole 13 is inserted, and an attachment portion integrally provided at an upper end portion of the base portion 78. The flange portion 79 has three screw insertion holes 79a through which the screw a is inserted, and is fixed on the stepped portion 13a.

Reference numeral 80 denotes a second metal fitting for mounting the camera, which has a base portion 81 having an upwardly opening screw hole 81a and through which the stepped hole 50 is inserted, and a mounting portion integrally provided at a lower end portion of the base portion 81. The flange portion 82 has three screw insertion holes 82a through which the screws j are inserted, and is fixed on the step portion 50a.

A shield case 83 made of a stainless steel plate is fitted in the frame 20 so that a part of the case surface faces the bottom surface of the substrate holder 70 so as to close the upper opening.

Further, the printed circuit boards 12a to 12f are
MB board, DC / DC converter board, PR (processor) board, TG (timing generator) board, and C
A CD substrate and a CN substrate.

In the video camera thus constructed, the printed circuit board 12a facing the upper and lower wall plates 3 and 4,
The heat generated from the electronic components E ₁ and E ₂ on 12b is transmitted to the upper and lower wall plates 3 and 4 through the third heat conductive rubber 75, and the atmosphere outside the camera housing 7 is transmitted from these wall plates 3 and 4. Be dissipated in.

Further, in the present embodiment, the heat generated from the electronic components E ₃ and E ₄ on the left and right printed circuit boards 12c and 12d is transmitted to the side plates 26 and 27 through the third heat conductive rubber 75, and these From the side plates 26, 27 to the fourth heat conductive rubber 7
6 and the heat transfer block 35, the heat radiating plates 28, 29
Is transmitted to the atmosphere from these heat radiation plates 28 and 29.

In this case, since the surface area of the camera housing 7 is large due to the heat dissipating fins 16 and 24 on the heat dissipating plates 28 and 29, the heat generated from the electronic components E in the main body 2 is efficiently distributed to the four sides of the camera housing 7. Since the heat path resistance between the electronic components E _{1 to} E ₄ and the camera housing 7 (the upper and lower wall plates 3 and 4 and the left and right wall plates 5 and 6) can be reduced, the electronic components due to temperature rise can be reduced. It is possible to prevent the occurrence of failure and performance deterioration.

In addition to this, in the present embodiment, the heat generated from the CCD 11 in the main body 1 is transmitted to the heat transfer plate 64 via the first heat conductive rubber 73, and the heat transfer plate 64 receives the second heat.
It is transmitted to each side plate 26, 27 through the heat conductive rubber 74,
It is emitted from the side plates 26 and 27 into the atmosphere.

In this case, the CCD 11 and the side plates 26, 2 are separated by the first heat conductive rubber 73 and the second heat conductive rubber 74.
Since the heat path resistance between 7 becomes small, C
It is possible to prevent a failure and performance deterioration of the CD 11.

Therefore, in this embodiment, as in the conventional case, a ventilation hole is provided in the camera housing as a heat dissipation structure,
Alternatively, it is not necessary to set the external dimensions of the camera housing to large dimensions.

Further, in this embodiment, the heat sink 28,
The attachment of 29 to the side plates 26 and 27 via the columns 33 and 34 means that the left and right side plates 2 are attached by these columns 33 and 34.
Air passages (air passages) that open in the front-back (horizontal) direction and the vertical (vertical) direction are formed between the heat sinks 6 and 27 and the heat sinks 28 and 29.

Furthermore, in this embodiment, when the lens barrel 2 is attached to the front plate 8, this lens barrel 2
The optical axis of the lens is orthogonal to the lens barrel mounting surface 8b which is perpendicular to the second lower camera mounting surface 52 of the end plate 49.

Therefore, it is not necessary to increase the mounting accuracy of the front plate 8 with respect to the camera housing 7 at the time of manufacturing the camera as in the conventional case, so that the processing work of the camera housing 7 and the front plate 8 at the time of manufacturing the camera is easily performed. be able to.

Although the transmission plate 64 is formed of an aluminum plate in this embodiment, the present invention is not limited to this, and a metal plate such as copper may be used. In this case, the heat radiation effect can be further enhanced.

Further, the material of the heat conductive rubber in the present invention is not particularly limited to the above-mentioned embodiment, and each heat conductive rubber is applied to the heat transfer plate 64, the upper and lower wall plates 3 and 4 and the side plates 26 and 27. It suffices if it closely reduces the heat path resistance.

Besides, in the present embodiment, an example in which the present invention is applied to an FA device has been shown, but the present invention is not limited to this and can be applied to an image processing device, for example, as in the embodiment.

[0083]

As described above, according to the present invention, a camera housing having an image pickup element built therein and having upper and lower wall plates and left and right wall plates, and the upper and lower wall plates and the left and right wall plates facing each other in the camera housing. And a circuit board on which electronic components are mounted, and a heat conductive rubber is interposed between each electronic component and each wall board on each of these circuit boards. The heat generated from the electronic components on each circuit board facing the plate is transmitted to each wall plate via the heat conductive rubber, and is radiated from the wall plates to the atmosphere outside the camera housing.

Therefore, since it is not necessary to provide a vent hole in the camera housing as a heat dissipation structure or to set the outer dimensions of the camera housing to a large size as in the conventional case, the quality is guaranteed for a long time. It is possible to prevent the size of the entire camera from increasing.

[Brief description of drawings]

FIG. 1 is a sectional view showing a main part of a heat dissipation structure of a video camera according to the present invention.

2A and 2B are a plan view and a bottom view showing a video camera.

3A to 3C are a front view, a rear view, and a right side view showing a video camera.

FIG. 4 is a perspective view showing the appearance of a video camera.

FIG. 5 is an exploded perspective view showing the entire video camera.

6A and 6B are a vertical sectional view and a horizontal sectional view showing a video camera.

FIG. 7 is a cross-sectional view showing the vicinity of the image sensor of the heat dissipation structure of the video camera.

FIG. 8 is a perspective view showing an arrangement state of each circuit board of the video camera.

FIG. 9 is a sectional view showing a front plate of the video camera.

10A and 10B are a longitudinal sectional view and a lateral sectional view showing a conventional video camera.

[Explanation of symbols]

3 ... top wall panel 4 ... bottom wall panel 5 ... left wall plate 6 ... right side wall plate 7 ... camera housing 12 a to 12 d ... PCB E ₁ to E ₄ ... electronic part, 27 the side plates 75 ... third heat conductivity Rubber M ... Video camera

Claims (1)

[Claims] 1. A camera housing having a built-in image sensor and having upper and lower wall plates and left and right wall plates, and an electronic component mounted inside the camera housing so as to face the upper and lower wall plates and the left and right wall plates. A heat dissipation structure for a video camera, characterized in that a heat conductive rubber is interposed between each of the electronic components on each of the circuit boards and each of the wall plates.