JP3342273B2 - Surveillance camera device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surveillance camera device mounted on a ceiling wall of an arbitrary room and used for monitoring the room, and more particularly to a surveillance camera device which is formed in a housing of the surveillance camera device. The present invention relates to a device devised so that heat generated (for example, heat generated at the time of photoelectric conversion by an image sensor) can be efficiently exhausted into a space above a ceiling.

[0002]

2. Description of the Related Art A surveillance camera device is attached to a ceiling wall or the like in an arbitrary room (for example, a convenience store, a room where a bank cash service is performed, etc.), and performs monitoring for 24 hours there. I have.
In addition, this type of surveillance camera device uses a CCD (solid-state image sensor, charge
It is configured to perform photoelectric conversion by an image pickup device such as a coupled device and output as electrical information. The electrical information is separately converted and displayed as image information on a monitor arranged in a remote room.

In the surveillance camera device having the above structure, heat is generated by photoelectric conversion by an image pickup device such as a CCD or the like, and measures are taken to dissipate the generated heat. For example, the CC to which the CCD is attached and fixed
A heat sink (heat sink) is provided on a D-mounted video board. In this case, since the heat generated by the photoelectric conversion in the CCD is radiated through the radiator plate, the temperature rise of the CCD itself can be suppressed. It has also been considered that a ventilation hole is formed in the housing of the monitoring camera device, and heat generated inside the housing of the monitoring camera device is exhausted into the room through the ventilation hole.

[0004]

According to the above-mentioned conventional configuration, there are the following problems. First, there is a case where a heat radiating plate is provided on a video board with a CCD. In this case, although the temperature rise of the CCD itself can be suppressed, the heat inside the housing of the monitoring camera device is radiated. As a result, the effect of suppressing the temperature rise of the CCD itself is eventually reduced. In the case where a ventilation hole is formed in the housing of the surveillance camera device and heat generated inside the housing of the monitoring camera device is exhausted to the room through the ventilation hole, the interior of the room is formed through the ventilation hole. Floating dust is expected to enter the housing of the surveillance camera device, and it is expected that such dust adheres to the lens, thereby lowering the quality of image information obtained. Further, it is difficult to secure a sufficient ventilation hole from the viewpoint of design only by ventilation between the room and the inside of the housing, and the effect of radiating the heat in the housing to restrict the temperature rise is low. There was also. In addition, this kind of problem is required to reduce the size of the monitoring camera device itself,
The narrower space in the housing has created a more pronounced problem.

The present invention has been made based on such a point, and an object of the present invention is to provide a stable function for a long period by effectively radiating heat generated inside a housing of a monitoring camera device. An object of the present invention is to provide a surveillance camera device that enables the above.

[0006]

In order to achieve the above object, a surveillance camera device according to the present invention comprises a housing mounted and fixed to a ceiling wall, an image received from a subject via a lens and housed in the housing. in the monitoring camera apparatus comprising anda surveillance camera and outputting the photoelectrically converted by the imaging element information, interior to the housing
Of the air intake section and the housing that sucks air into the housing
An exhaust section is provided to exhaust air from the ceiling
And from the room through the exhaust
It is conceivable to provide a ventilation path to the inside of the well and exhaust the heat generated in the housing to the back of the ceiling. Further, it is conceivable that the housing is composed of a lower case located on the ceiling side and a dome cover located below the lower case, and an intake portion is provided at an engaging portion between the lower case and the dome cover or in the vicinity thereof. Further, it is conceivable that the intake portion is constituted by a gap formed at an engagement portion between the lower case and the dome cover, and a plurality of slits formed at an end of the lower case on the dome cover side.

That is, in the case of the surveillance camera device according to the present invention, the heat generated in the housing is to be exhausted to the space above the ceiling, thereby suppressing the temperature rise in the housing. The aim is to maintain the stability of. As means for discharging the heat generated in the housing to the space above the ceiling, it is conceivable that a path connecting the room where the monitoring camera device is arranged, the inside of the housing, and the space above the ceiling constitutes an intake / exhaust path. In addition, it is conceivable to provide the intake portion provided in the housing at or near the engagement portion between the lower case and the dome cover which constitute the housing. Further, specifically, it is conceivable that the intake portion is constituted by a gap formed at an engagement portion between the lower case and the dome cover, and a plurality of slits formed at an end of the lower case on the dome cover side. Can be The intake section may be constituted only by the gap, the intake section may be constituted only by the slit, and the intake section may have another configuration.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. First, a housing 1 is provided. The housing 1 includes a lower case 5 arranged on the ceiling wall 3 side and a dome cover 7 arranged below the lower case 5. A part of the dome cover 7 has an opening 9, and a transparent cover 11 is attached to the opening 9. The lens unit 1 is provided in the dome cover 7 via a bracket 13.
5 is mounted, and a video board 17 with a CCD is mounted on the rear side of the lens unit 15. A CC (not shown) is mounted on the CCD mounted video board 17.
D is attached. A control board 19 is mounted in the lower case 5. It should be noted that various electronic components (not shown) other than the CCD are mounted on the CCD-mounted video board 17 and the control board 19, but are not shown in the figure.

A partition wall 21 is formed on the upper side and inside of the lower case 5 in the drawing. The bracket 13, the lens unit 15, the CCD mounted video board 17, the control board 19, etc. , Are all directly and indirectly attached to the partition wall 21. A mounting bracket (not shown) is mounted on the upper surface side of the partition wall 21 in the figure, while a corresponding mounting bracket (not shown) is mounted on the ceiling wall 3 side. Then, the entire monitoring camera is mounted and fixed to the ceiling wall 3 by locking the mounting bracket on the partition wall 21 side to the mounting bracket on the ceiling wall 3 side. The dome cover 7 is integrally attached to the bracket 13.

At the time of monitoring, the lens unit 15, the video board 17 with the CCD and the like are mounted on the dome cover 7.
(See arrow A in FIG. 2)
The lens unit 15, the CCD mounted video board 17, etc.
The dome cover 7 rotates in the direction indicated by the arrow B in FIG. 2 within the range of the transparent cover 11. As a result, the room is monitored without leakage.

Next, the ventilation structure according to the present embodiment will be described. First, a gap 23 is formed in an engagement portion between the lower case 5 and the dome cover 7, as shown in FIG. This is a gap that is inevitably necessary to allow the rotation of the dome cover 7. Also, lower case 5
As shown in FIG. 2, slits 25 are formed at equal intervals in the circumferential direction at the lower end of the. A through hole 27 is formed at the center position of the partition wall 21, and the through hole 2 is formed at a position directly above the through hole 27 in the ceiling wall 3.
9 are formed. In the figure, reference numeral 30 denotes a cable for connecting a monitor or a control device installed in a remote room to the control board 19 and the CCD board 17 and conveying necessary electric signals. It is wired to the ceiling using. FIG. 3 is a sectional view taken along the line III-III in FIG.
FIG. 3 is a cross-sectional view showing a state in which the slits 25 are formed at equal intervals in a circumferential direction.

According to the above configuration, the gap 23, the slit 2
5, lower case 5, space in dome cover 7, through hole 2
7, through the through hole 29, the room 33, the inside of the housing 1,
A ventilation path connecting the space 31 above the ceiling is formed (the ventilation path is indicated by an arrow in FIG. 2), and heat generated in the lower case 5 and the dome cover 7 is generated through the ventilation path. Due to the generated airflow, heat is efficiently exhausted into the space 31 above the ceiling inside the ceiling wall 3.

As described above, according to the present embodiment, the heat generated by the photoelectric conversion or the like of the CCD passes through the gap 23, the slit 25, the space in the lower case 5 and the dome cover 7, the through-hole 27, and the ventilation path through the through-hole 29. The air flow generated through the space effectively discharges the air into the space 31 above the ceiling, so that the temperature inside the lower case 5 and the dome cover 7 rises and the function is reduced. It is possible to provide a stable monitoring function over a long period of time. In addition, since the gap 23 and the slit 25 functioning as an intake unit are located above the lens unit 15, there is little adhesion of dust and the like entering in the air flow to the lens unit 15 and the image quality is deteriorated. Can be prevented. In addition, since the slits 25 are formed in addition to the gaps 23 in the air intake section, the air intake efficiency is high, the air flow can be reliably generated, and the heat dissipation function can be enhanced.

Next, a second embodiment of the present invention will be described with reference to FIGS. The same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted. In this embodiment, first, an exhaust hole 41 is formed at a center position of the partition wall 21, and a plurality of intake holes 43 are formed at an outer peripheral position of the exhaust hole 41. Further, a large through hole 45 is formed in the ceiling wall 3, and the center of the through hole 45 functions as an exhaust path, and the outer peripheral part functions as an intake path.
Exhaust holes 47 and 49 are formed at the center of the control board 19 located below the partition wall 21. 4 to 6, illustration of cables is omitted.

In the case of this embodiment, the heat generated in the lower case 5 and the dome cover 7 causes the air flow flowing through the exhaust holes 49, 47, 41 and the central portion of the through hole 45 to flow. As a result, heat is exhausted into the ceiling space 31.
In addition, an airflow is generated from the ceiling space 31 side toward the lower case 5 and the dome cover 7 through the outer peripheral portion of the through hole 45 and the intake hole 43. The heat generated in the lower case 5 and the dome cover 7 due to such an air flow is efficiently released into the space 31 above the ceiling, whereby the heat generated in the first embodiment differs from that in the first embodiment. Similar functions and effects can be obtained. Further, in the case of this embodiment, since the housing 1 itself has no opening communicating with the room, the invasion of dust from the room and the deterioration of the image quality caused by the adhesion of the dust to the lens are reduced by the first method. This can be prevented more than in the case of the embodiment.

The present invention is not limited to the first and second embodiments. For example, in the first embodiment, a through hole may be formed in the control board 19, and a ventilation path passing therethrough may be added. Further, in the first embodiment, it is also conceivable that the intake portion is constituted by only one of the gap 23 and the slit 25. Further, in the second embodiment, the configuration such as a through-hole for ventilating the space between the ceiling and the space 31 is not limited to the illustrated one.

[0017]

As described in detail above, according to the surveillance camera device of the present invention, first, the heat generated in the housing is discharged to the space above the ceiling, so that the temperature rise in the housing is suppressed. Thus, the function can be stably maintained. In the case where a ventilation path is formed by a path connecting the room, the inside of the housing, and the space above the ceiling, the position of the air intake section is usually provided by providing an intake section at or near the engaging portion between the lower case and the dome cover forming the housing. Since the lens unit is located at a position higher than the lens unit, it is possible to prevent dust or the like entering the room from adhering to the lens and to prevent a decrease in image quality.

[Brief description of the drawings]

FIG. 1 is a diagram showing a first embodiment of the present invention, and is a front view showing a state in which a monitoring camera device is fixed to a ceiling wall.

FIG. 2 is a diagram showing a first embodiment of the present invention, and FIG.
-II is a sectional view.

FIG. 3 is a diagram showing a first embodiment of the present invention, and FIG.
It is I-III sectional drawing.

FIG. 4 is a front view showing a state in which the monitoring camera device is fixed to a ceiling wall in the second embodiment of the present invention.

FIG. 5 is a diagram showing a first embodiment of the present invention, and FIG.
It is -V sectional drawing.

FIG. 6 is a diagram showing a second embodiment of the present invention, and is a view showing VI of FIG. 5;
It is a VI sectional view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Housing 3 Ceiling wall 5 Lower case 7 Dome cover 9 Opening 11 Transparent cover 13 Bracket 15 Lens unit 17 CCD mounted video board 19 Control board 21 Partition wall 23 Gap 25 Slit 27 Through hole 29 Through hole 31 Ceiling space 41 Exhaust hole 43 intake hole 45 through hole 47 exhaust hole 49 exhaust hole

Claims (3)

(57) [Claims] 1. A housing mounted and fixed to a ceiling wall, and a surveillance camera body housed in the housing and photoelectrically converting image information obtained from a subject via a lens by an imaging element and outputting the image information. In the surveillance camera device, air in the room is sucked into the housing.
Exhaust section that exhausts air from the intake section and housing to the ceiling
From the room through these intake and exhaust sections.
A surveillance camera device , wherein a ventilation path is provided through the jing toward the ceiling, and heat generated in the housing is exhausted to the ceiling. 2. The surveillance camera device according to claim 1, wherein the housing comprises a lower case located on a ceiling side and a dome cover located below the lower case, and an engaging portion between the lower case and the dome cover or the dome cover. A surveillance camera device characterized by providing an air intake section in the vicinity. 3. The surveillance camera device according to claim 2, wherein the intake portion has a gap formed at an engagement portion between the lower case and the dome cover, and a plurality of air intake portions formed at an end of the lower case on the dome cover side. A surveillance camera device comprising a slit.