JP2000244781A - Dome type video camera device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make an internal structure such as an optical block on the inner side of a dome type cover hard to see from the outside and to make monitoring by a video camera unnoticed as much as possible. SOLUTION: The optical block 3 attached detachably to the front surface of the cylindrical main body 2 of this dome type video camera device 1 is constituted so as to be rotated 360 deg. in a pan direction by a universal joint mechanism 4, only a part equivalent to the angle adjustment area of the tilt direction of the optical block 3 in the dome type cover 5 for covering the outer periphery of the movable area of the optical block 3 is constituted in a light transmittable area 501 in an oblong hole shape and the other area is constituted in a light non-transmittable area 502.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is directed to a dome type used for surveillance applications, which is embedded in a ceiling or a wall of a building so as not to be intimidated, and is made as unobtrusive as possible. It belongs to the technical field of a video camera device, and particularly relates to a dome type cover.

[0002]

2. Description of the Related Art Conventionally, for the purpose of securing safety and improving serviceability in hospitals, hotels, department stores, and the like,
There is a ceiling-mounted device of a dome type video camera device which is embedded in the ceiling, walls, etc. of these buildings so as to be inconspicuous and is monitored by video and sound collection. And
As shown in FIGS. 62 to 65, conventionally, a dome type video camera device 301 of this type has a cylindrical main body 302 and an optical block 303 attached to a lower surface which is a front surface of the cylindrical main body 302 so as to be adjustable in angle. And a dome-shaped cover 304 detachably attached to the lower surface of the cylindrical main body 302 and covering the outer periphery of the movable area of the optical block 303. The ceiling embedding device 311 is pressed by a sheet metal, and a disc-shaped camera mounting plate 313 is horizontally attached to a lower portion of the ring-shaped camera mounting portion 312 by two set screws 314 at 180 ° intervals. Two screw holes (referred to as tapped holes) 315 penetrating the camera mounting plate 313 are connected to the camera mounting portion 312 by 180
° formed at intervals. Then, the camera mounting portion 312
4 pairs of brackets 316, 317 on each pair
Are formed integrally, and these brackets 316,
Reference numeral 317 denotes a substantially L-shaped portion which is bent downward at a right angle from the camera mounting portion 312 and then horizontally bent outward. A pair of (a pair of) brackets 316 opposed by 180 ° respectively have
18 are incorporated. These ceiling fixing portions 318 vertically insert a fastening screw 320 from below into a horizontally formed step portion 319 at an intermediate portion in the vertical direction of the bracket 316, and connect the upper end of the fastening screw 320 to the bracket 316. The bracket 321 is inserted into a substantially inverted L-shaped bracket 321 screwed to the upper position, and is rotatably supported by a retaining washer 322. A screw engagement hole (female screw) 324 formed at the upper end of the fixing plate 323 is
20, and a downwardly sharpened claw 325 is formed at the lower end of the fixing plate 323.

[0003] When the ceiling is embedded, first, the ceiling 3
A camera mounting hole 342 having a predetermined size is opened in 41 with a cutter. Next, the two fastening screws 320 are each rotated in the loosening direction by a screwdriver, and the two fixing plates 323 are moved up to the upper position by a large stroke.
To the inside of the camera mounting hole 342 as indicated by the one-dot chain line.
Rotate 0 °. Then, the camera mounting portion 312 of the ceiling embedding device 311 is inserted (embedded) into a position above the ceiling 341 through the camera mounting hole 342 to obtain a total of four.
The two brackets 316 and 317 are pressed against the lower surface of the ceiling 341 from below. Then, the two fastening screws 320 are rotated in a direction to be tightened by a screwdriver, and the two fixing plates 323 are positioned above the ceiling 341 in FIGS.
90 ° to the outside of the camera mounting hole 342 as shown by a solid line in FIG.
Rotate and descend downward for a large stroke.
Then, the two downwardly directed sharp claws 325 of the two fixing plates 323 are fastened so as to bite into the upper surface of the ceiling 341, and the ceiling 341 is sandwiched from above and below by a total of four brackets 316 and 317 and a total of two fixing plates 323. And fix it. Then, the dome-shaped cover 304 of the dome-shaped video camera device 301 is detached from the cylindrical main body 302, and the cylindrical main body 302 is inserted into the camera mounting hole 342 from below, so that the upper surface chassis of the cylindrical main body 302 The three locking claws 326 pressed at intervals of ° are inserted into the twist lock holes 327 formed at intervals of 120 ° on the camera mounting plate 313 and locked. Then, the two setscrews 328 inserted into the cylindrical main body 302 from below are fastened to the two screw holes 315 of the camera mounting portion 312 to fix the cylindrical main body 302 to the lower surface of the camera mounting plate 313. At this time, the tubular main body 302 is connected to the connector 329 attached to the lower center of the camera attachment portion 312.

After that, an angle adjustment operation of the optical block 303 is performed to incline the optical block 303 in a desired direction in a desired direction.
Is detachably attached to the lower surface of the cylindrical main body 302, a ring-shaped sealing cover 331 is inserted into the outer periphery of the cylindrical main body 302, and the camera mounting hole 342 is closed from below. At this time, conventionally, a total of four leaf springs 332 attached to the upper surface of the sealing cover 331 at 90 ° intervals are detachably locked to the leaf spring locking holes 330 formed at the lower ends of the four brackets 316 and 317. The ceiling cover 331 is fixed to the ceiling.

[0005]

However, in the conventional dome type video camera device 301, the rotation angle in the pan direction of the angle adjusting mechanism of the optical block 303 is about 75 degrees from the center.
The symmetrical angle is limited to an angle of ° and the optical block 303 cannot be rotated 360 ° in the pan direction. Therefore, when the dome-type video camera device 301 is mounted on the ceiling 341 by the ceiling-mounting device 311, if the mounting direction of the ceiling-mounting device 311 is significantly wrong, the dome-type video camera is retrofitted to the ceiling-mounting device 311. Optical block 301 of device 301
Cannot be accurately set to the desired shooting direction. In that case, the ceiling embedding device 31 with respect to the ceiling 341
It is necessary to change the mounting direction by replacing the fixing plate 1, but since the sharp nail 325 of the fixing plate 23 is cut into the ceiling 314, the sharpening of the fixing plate 323 is performed during the replacement work of the ceiling embedding device 311. Claw 325 with ceiling 34
Inconveniences such as the gypsum board 1 being easily erroneously damaged were likely to occur. In addition, the ceiling embedding device 31 to the ceiling 341
The mounting work 1 is all work from below, and is performed in a very difficult posture for the operator. Therefore, it is difficult to accurately set the mounting direction of the ceiling embedded device 311. Such inconvenience was likely to occur.

A conventional dome type video camera device 3
01, the dome-shaped cover 304 is detachably attached to a fixed position of the cylindrical main body 302,
4 cannot be rotated 360 ° with respect to the cylindrical main body. Therefore, the dome type video camera device 30
After the work of attaching the optical block 303 to the ceiling 341 is completed, the optical block 303 is adjusted to a desired direction and angle, although the optical block 303 is finally used in a desired photographing direction. It is necessary to ensure the light transmittance of the dome-shaped cover 304 over the entire movable area of the optical block 303. For this purpose, conventionally, a molded part in which the dome-shaped cover 304 is injection-molded with a transparent acrylic resin or the like has been used. As a result, the optical block 30 is not intended to be noticed by the video camera.
An internal mechanism such as 3 was easily seen through the dome-shaped cover 304. The dome-shaped cover 304
Some of them are smoke-processed as a whole, but depending on how light hits, the inconvenience that the internal mechanism such as the optical block 303 can be seen through is still inevitable.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problem, and an object of the present invention is to provide a dome type video camera device in which an internal mechanism of a dome type cover can be made hard to see from the outside. The purpose is.

[0008]

In order to achieve the above object, the present invention provides a dome type video camera apparatus in which an optical block can be adjusted to a cylindrical main body within a predetermined angle in a tilt direction and in a pan direction. The dome-shaped cover is rotatable 360 ° in the pan direction, and the dome-shaped cover is rotatable and removable 360 ° in the pan direction. Light is transmitted through a portion of the dome-shaped cover corresponding to the angle adjustment area in the tilt direction of the optical block. And the other area of the dome-shaped cover is configured as a light-impermeable area.

In the dome type video camera apparatus of the present invention configured as described above, the optical block attached to the cylindrical main body can be adjusted within a certain angle in the tilt direction, but can be rotated by 360 ° in the pan direction. Since the video camera can be mounted on a ceiling or the like in an appropriate direction, the panning direction of the optical block can be adjusted by rotating the optical block to an entire range of 360 ° after the video camera is mounted, so that the shooting direction can be freely set.
Then, the dome-shaped cover detachably attached to the cylindrical main body is configured to be rotatable 360 ° in the pan direction, and only a part of the dome-shaped cover corresponding to the angle adjustment area in the tilt direction of the optical block is illuminated. As it was configured as a transmissive area, most of the other areas were configured as light non-transmissive areas,
The light-transmitting area, which is a part of the dome-shaped cover, can be easily adjusted to the shooting direction of the optical block, and the internal mechanism, such as the optical block, is effectively made by the light-impermeable area, which is the other part of the dome-shaped cover. Can be concealed.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a dome type video camera apparatus and a ceiling embedded apparatus to which the present invention is applied will be described below in the following order with reference to the drawings. (1) General description of the basic structure of the dome-type video camera device (2) General description of the basic structure of the cylindrical main body (3) General description of the optical block (4) Universal joint mechanism (5) ・ ・ ・ Description of the basic structure of the dome type cover (6) ・ ・ ・ Description of the stopper for mounting the universal joint mechanism (7) ・ ・ ・ Mounting work of the dome type video camera device Description of how to use the monitor output terminal (8) ・ ・ ・ Description of molding device for basic structure of dome type cover (9) ・ ・ ・ Description of ceiling embedded device (10) ・ ・ Description of protective film for dome type cover (11) Description of the dome type cover of the dome type video camera device of the present invention

(1) Outline of the basic structure of the dome type video camera device First, the outline of the basic structure of the dome type video camera device will be described with reference to FIGS. 29 to 37. Type video camera device 1 includes a cylindrical main body 2
And a universal joint mechanism 4 attached to the front side of the cylindrical main body 2 and having a single structure that supports the optical block 3 so as to be rotatable in three axial directions, and is detachably attached to the front surface 2a of the cylindrical main body 2. A dome-shaped cover 5 and the like are provided so as to be attached.

The dome type video camera device 1
The diameter D of the conventional dome type video camera device is about 120 mm and the height is about 105 mm.
The dome type video camera device 1 is a small and lightweight dome type video camera device 1 which is significantly reduced in size. A sound collecting microphone 6 is attached to a front surface 2b on a side surface of the cylindrical main body 2, and a front surface of the dome type video camera device 1 is a display section for displaying a front position of the dome type video camera device 1. Logo mark 7 is displayed. A rectangular window hole 8 is opened in the back surface 2c on the side surface of the cylindrical main body 2, and a monitor output terminal 9, a monitor image fine adjustment switch 10, other switches and a volume are provided in the window hole 8. Are arranged horizontally. And this window hole 8
Is configured to be openable and closable by the sliding shutter 11 shown in FIG. Also, the back surface 2 of the cylindrical main body 2
A coaxial cable terminal 12, which is a connection portion of a coaxial cable (not shown) for connecting to a monitor television in a monitoring room, is attached to d. As shown in FIG. The device 1 is mounted on a ceiling or wall 14
When the coaxial cable terminal 12 is mounted on the camera, the coaxial cable terminal 12 is embedded in the camera mounting hole 15 in the ceiling or wall 14 thereof. Therefore, this coaxial cable terminal 1
2 is the height H of this dome type video camera device 1 = 96.
It is not included below 6 mm.

The dome type video camera device 1
Is that the rotation center O of the universal joint mechanism 4 in the three axial directions is one point on the optical axis F of the optical block 3 and is located on the center of the inner spherical surface 5 a of the dome-shaped cover 5. By its universal joint mechanism 4 to an arrow X, which is a three-axis direction around a rotation center O,
It is configured to be able to make a 360 ° turning motion (head swing motion) in the Y and Z directions. In particular, the maximum rotation angle θ in the tilt direction, which is the rotation angle of the optical block 3 in the front direction with respect to the vertical reference P when the dome-type video camera device 1 is mounted on the ceiling 14, is a very large angle of 72 °. The rotation angle in the pan direction, which is a rotation angle around the vertical reference P, is set to 360.
° It is configured throughout. Further, the rotation center O of the universal joint mechanism 4 is set to the inner spherical surface 5 of the dome-shaped cover 5.
a, the optical block 3
When the rotation is adjusted in the axial direction, the gap G between the lens 301 at the tip of the optical block 3 and the inner spherical surface 5a of the dome-shaped cover 5 can be kept constant, and a photographed image due to the change in the gap G Is configured to be able to prevent distortion.

(2) Description of Basic Structure of Cylindrical Body Next, the basic structure of the cylindrical body 2 will be described with reference to FIGS. 29, 35 to 37, and 43 to 48. The main body 2 includes a cylindrical case 21, a main chassis 22 which is a chassis incorporated in the cylindrical case 21,
It includes a front cover 23, a chassis cover plate 24 as a rear chassis, and two circuit boards including a signal processing board 25 and a power supply board 26, both of which are formed of double-sided boards.
The cylindrical case 21 is formed into a cylindrical shape with a molded part (a molded product such as an ABS resin), and has a front side opening 21a and a rear side (ceiling side) opening 21b at both ends in the axial direction.
Are formed. A ring-shaped cover attaching portion 31 is integrally formed on the outer periphery of the front opening 21a.

A sound collecting hole 35 is opened laterally inside the front surface of the cylindrical case 21 near the front opening 21a, and inside the sound collecting hole 35, a microphone holding portion 36 is provided. Are integrally formed. A rectangular window hole 8 is formed on the back surface of the cylindrical case 21, and a shutter guide 37 is integrally formed inside the window hole 8 on the back side opening 21 b side in an arc shape along the inner circumference. ing. Then, both ends of the shutter 11 inserted into the inside of the cylindrical case 21 and formed in an arc shape along the inner circumference in the axial direction of the cylindrical case are integrally formed with the shutter guide 37 and a front cover 23 described later. While being guided by the arcuate shutter guide 38, the cylindrical case 2
A sliding shutter structure is provided which can open and close the window hole 8 by sliding in an arc along the inner circumference of the shutter 1. At two equally spaced positions on the inner periphery of the rear side opening 21b of the cylindrical case 21, two co-tightening projections 40 having an elongated hole 39 formed as a screw insertion hole also serving as a positioning hole, A total of three joint fastening projections 40, 4 comprising one joint fastening projection 41 having a hole 41.
1 is integrally formed.

Next, the main chassis 22 is formed by die-casting an aluminum alloy or another metal having conductivity, and comprises a central ring-shaped portion 51 and three equal portions of the outer periphery of the central ring-shaped portion 51. Three arms 52 and one arm 53 extending radially outward from the position;
Two positioning pins 54 and one substrate mounting pin 55 extending in parallel to the rear opening 21b side along the axial direction of the cylindrical case 21 from the rear surfaces of the distal ends of the three arm portions 52 are integrally formed. . And a total of four arms 5
On the rear surfaces of the two and 53, a total of four substrate mounting tables 56 having a low height in the axial direction of the cylindrical case 21 are integrally formed at the positions near the front ends and at the front ends, and the positions near the front ends of the two positioning pins 54. Outer peripheral side and one substrate mounting pin 5
5, a total of three substrate mounting tables 57 having a high height in the axial direction of the cylindrical case 21 are integrally formed at the end of the substrate mounting table 5.

The signal processing board 25 is connected to the outside 3
A total of three positioning pins 5 by one positioning hole 58
4 and the substrate mounting table 55, which is screwed to a total of four substrate mounting tables 56 by a total of four set screws 59. Then, two positioning pins 54 are formed by two positioning holes 60 formed on the outer peripheral side of the power supply board 26.
And screwed to a total of three substrate mounting tables 57 with a total of three set screws 61. As described above, by incorporating the signal processing board 25 and the power supply board 26, which are two circuit boards, in two steps in the cylindrical case 21, the area of the entire circuit board can be reduced while reducing the diameter of the cylindrical case 21. Can be expanded sufficiently. The signal processing board 25 and the power supply board 26 are connected by a flexible printed board.

At this time, two arm connecting leaf springs 62 having a substantially U-shaped cross section are fitted to the two joint fastening projections 40 of the cylindrical case 21, and the power supply board 26 is provided.
Is in contact with the inside of the leaf spring 62, and the chassis lid plate 24 formed in a disc shape by sheet metal on the outside of the leaf spring 62.
Abut. The two positioning pins 54 pass through the leaf springs 62 so as to penetrate through the two long holes 39 of the co-fastening projections 40, and the two screw holes serving as the two positioning holes on the outer periphery of the chassis cover plate 24 are inserted. It is inserted from the inside into the long hole 63 which is a hole. Then, a total of three setscrews 61 are inserted from the two long holes 63 of the chassis lid plate 24 and the other screw insertion hole 64 on the outer periphery, and the total of the three long holes 39 and the screws 39 of the joint fastening projections 40 and 42 are formed. By inserting the insertion holes 41 and screwing them on the three substrate mounting tables 56 and 57 in total, between the three substrate mounting tables 56 and 57 and the chassis cover plate 24, the power supply substrate 26 and the three The joint fastening projections 40 and 41 and a total of two leaf springs 62 are sandwiched between them so that they are fastened together. Therefore, the signal processing board 25 and the power supply board 26 are
The cylindrical case 2 has two stages (steps) in its axial direction and is perpendicular to the axial direction.
The back side opening 21b of the device 1 is closed by a chassis cover plate 24. Then, the signal processing board 25 and the power supply board 26
Is a conductive main chassis 22 and two leaf springs 6
2 and is grounded to the chassis cover plate 24.

The sound collecting microphone 6 is connected to the signal processing board 2.
5 is connected via a lead wire 6a and a connector to the microphone holder 5 of the cylindrical case 21 so as to be detachably mounted laterally. The monitor output terminal 9 is mounted (solder dip) on the outer peripheral position on the front side of the signal processing board 25 in parallel with the mounting surface of the signal processing board 25, and is disposed in the window hole 8. The monitor image fine adjustment switch 10 and the like are attached to a switch stand 10 a attached to the front side of the chassis cover plate 24 and arranged in the window hole 8. The coaxial cable terminal 12 is attached to the rear surface (outer surface) of the chassis cover plate 24.

(3) Description of Optical Block Next, the optical block 3 will be described with reference to FIGS. 29 and 37 to 42. A lens 72 such as a vari-focal lens composed of a combination lens is housed, and a spherical portion 91 of the universal joint mechanism 4 described later is detachably connected to the optical axis F of the lens 72 on the base end 71b side. . And the outer periphery of this spherical part 91 is comprised by the spherical surface 91a, and the inside is comprised by the hollow part 91b. The CCD unit 74 is mounted on the optical axis F in the hollow portion 91b of the spherical portion 91. The CCD unit 74 includes a CCD 75 serving as an image pickup device,
It comprises a CCD holder 76, a CCD substrate 77, an optical low-pass filter 78, a sealing rubber 79, and the like, and is screwed inside a lens holder 101 of the spherical portion 91, which will be described later, with two set screws 80. A focus ring 81 and a zoom lever 82 are attached to the outer periphery of the lens barrel 71 on the tip 71a side. A convex portion 83 is integrally formed on the outer peripheral portion of the lens barrel 71 on the base end 71b side, and an auto iris motor 84 is incorporated in the convex portion 83.
On the front surface 83a of the convex portion 83, a logo mark 85 such as a manufacturing company name, which is a display portion for displaying the top and bottom directions of the monitor image, is displayed. The center (on the optical axis F) of the back of the CCD substrate 77 of the CCD unit 74
A signal cable 87, which is a harness drawn out of a connector 86 attached to the camera, and a signal cable 89, which is a harness drawn out of a connector 88 of the auto iris motor 84, pass through the center of the spherical portion 91 and are on the rear (main chassis 24) side. Has been drawn to.

(4) Description of Universal Joint Mechanism Next, the universal joint mechanism 4 will be described with reference to FIGS. 37 to 42. The universal joint mechanism 4 is screwed to the base end 71b of the lens barrel 71. The spherical portion 91 and the central ring portion 22a of the main chassis 22
Cylindrical base 92 integrally formed in a concentric cylindrical shape on the front side of
And a spherical base 93, which is the tip of the inner peripheral surface of the cylindrical base 92, and an angle in which a notch 94 for adjusting the angle is formed in a part of the outer periphery made of a die-cast component such as an aluminum alloy. The ball joint mechanism 97 includes an adjusting ring 95 and a fastening ring 96 for fastening the spherical portion 91 to the spherical portion receiving base 93 via the angle adjusting ring 95. The spherical portion 91 has a structure in which a hollow lens holder 101 and a holder cover 102 made of a metal casting are divided into two parts in the optical axis F direction. The cover 102 is fitted to each other from the direction of the optical axis F at an annular fitting portion 103 formed on the division surface, and the two setscrews 1
04 so as to be detachably connected. Then, the spherical portion 91 is attached to the lens holder 101 and the holder cover 102.
By assembling and disassembling the CCD unit 74 in the hollow portion 91b, it is possible to easily assemble and disassemble the CCD unit 74 in the hollow portion 91b. The diameter of the spherical portion receiving base 93 and the inner diameter of the inner peripheral flange 95 a integrally formed on the inner periphery on the front end side of the angle adjusting ring 95 are smaller than the diameter of the outer spherical surface 91 a of the spherical portion 91. An inner peripheral thread (female thread) 105 is formed on the inner periphery of the fastening ring 96, and is integrally formed in a concentric cylindrical shape at the outer peripheral position of the cylindrical base 92 on the front side of the central ring portion 51 of the main chassis 22. An outer peripheral screw (male screw) 107 is formed on the outer periphery of the cylindrical portion 106.

Then, the inner peripheral screw 104 of the fastening ring 96
Into the outer peripheral screw 107 of the main chassis 22,
By tightening in the direction of arrow a, which is the rear side, an inner peripheral flange 96a integrally formed on the inner periphery on the front end side of the fastening ring 96 and an outer peripheral flange 95b integrally formed on the outer periphery on the rear end side of the angle adjusting ring 95. Is pressed in the direction of arrow a.
Then, the inner peripheral flange 95a of the angle adjusting ring 95
Is the outer periphery (spherical surface 91) of the lens holder 101 of the spherical portion 91.
a) is pressed in the direction of arrow a, and the outer periphery (spherical surface 91a) of the holder cover 102 of the spherical portion 91 is pressed and fixed to the spherical portion support 93 in the direction of arrow a. When the ball joint mechanism 97 is fastened by the fastening ring 96, the center of the spherical surface 91 a of the spherical portion 91 is on the optical axis F and the rotation center O disposed on the center of the inner spherical surface 5 a of the dome-shaped cover 5. It is configured to be fixed.

According to the ball joint mechanism 97, the fastening ring 96 is slightly loosened in the direction of the arrow b on the front side, so that the spherical surface 91a on the outer periphery of the spherical portion 91 is provided.
Can be slid on the spherical base 93 so that the lens barrel 71 can be swung 360 degrees around the rotation center O in three directions of arrows X, Y, and Z (oscillating movement). It is configured as follows. Incidentally, the arrow Z direction is the pan direction, the arrows X and Y directions are the tilt directions, and the arrow Z direction is the turning direction. Then, the lens barrel 71 is pointed by the arrow X.
When the angle is adjusted in the direction, the lens barrel 71 is inserted into the notch 94 of the angle adjusting ring 95 to thereby adjust the lens barrel 7.
The configuration is such that the adjustment angle θ in the direction of the arrow X in FIG.

The two signal cables 87 and 89 pulled out from the rear of the lens barrel 71 are pulled out rearward from a circular hole 108 formed in the center of the rear end of the holder cover 102, and the front surface of the signal processing board 25. Two connectors 1 mounted at the center of the
09 and 110 are connected with a margin in length. Therefore, when the lens barrel 71 is rotated about one turn in the arrow Z direction, as well as when the angle of the lens barrel 71 is adjusted in the directions of the arrows X and Y, there is no disconnection of the signal cables 87 and 89 due to twisting or the like.

As shown in FIGS. 38 to 41, the coupling surface between the base end 71b of the lens barrel 71 and the lens holder 101, which is the front side surface of the spherical portion 91, extends along the spherical surface 91a of the spherical portion 91. The base end 71b and the lens holder 101 are removably fastened to the tapered surfaces 115 and 116 by set screws 117, which are a total of four fastening screws. Further, at this time, a total of four setscrews 117 are inserted at right angles to the tapered surfaces 115 and 116, and are inclined along the radial screw center line P1 intersecting at one point O1 on the optical axis F. I have. Accordingly, the diameter of the joint 118 between the base end 71a of the lens barrel 71 and the spherical portion 91 (the so-called root portion of the spherical portion 91) can be made sufficiently small, and the diameter of the spherical portion 91 itself is made sufficiently small. As a result, the overall size of the ball joint mechanism 97 can be reduced, and the adjustment angle of the lens barrel 71 can be increased. That is, the connecting surface between the base end 71b and the lens holder 101 is formed at right angles to the optical axis F, and the base end 71b and the lens holder 101 are connected by four screws 117 parallel to the optical axis F. In such a case, it is necessary to form a flange on the outer periphery of the base end 71b, and the diameter of the connecting portion 118 is enlarged. When the diameter of the connecting portion 118 is enlarged, the connecting portion 118 is interfered by the angle adjusting ring 95 at the time of adjusting the angle of the lens barrel 71, and the adjusting angle is limited. Since the diameter needs to be increased, the entire ball joint mechanism 97 becomes large.

Then, the base end 71b and the lens holder 10 at the tapered surfaces 115 and 116 are fixed by a total of four setscrews 117 fastened along the radial screw center line P1.
1 can generate a uniform fastening force around the optical axis F, and the tapered surface 115,
By the automatic adjustment operation by 116, the centering between the CCD 75 and the optical axis F of the lens 72 can be accurately performed, and the parallelism between the imaging surface of the CCD 75 and the focusing surface of the lens 72 can be set with high accuracy. A positioning portion 119 for setting the direction of the top and bottom of the CCD 75 is formed between the two tapered surfaces 115 and 116 to accurately position the base end 71b and the lens holder 101 at one point on the circumference. Can be combined.

As shown in FIGS. 39, 41 and 42, a signal cable 8 pulled out from the auto iris motor 84 is located on the outer periphery of the tapered surface 113 of the lens holder 101 near the rear of the auto iris motor 84.
9 is inserted into the inside of the spherical portion 91, and a cover 1 is formed in an outer region of the notch 121.
22 is detachably attached. The lid 122 is provided with a pair of inner ribs 123 integrally formed in parallel on both sides on the inner side thereof with the notches 121 of the lens holder 101.
A pair of groove-shaped portions 125 formed on both sides on the inner side of the inside, and a concave portion 125 formed between the inside of the pair of groove-shaped portions 125
After the lens holder 101 is inserted into the lens holder 101 in the direction of arrow b and engaged therewith, an annular fitting portion 103 attaches to the rear portion of the lens holder 101 in the direction of arrow b.
The set screws are engaged by engaging the tips of a pair of inner ribs 126 integrally formed on the inside of the holder cover 102 fitted from the directions and joined by the two set screws 104 with the inside of the rear end of the lid 122. It is detachably mounted in the notch 121 without use. A pair of protrusions 127 are provided on both sides of the outer periphery of the lid 122 on the front end side.
Are integrally formed. Therefore, the outside of the signal cable 89 inserted into the notch 121 can be covered with the lid 122, and the rotation and angle of the lens barrel 71 can be adjusted.
2 may interfere with the edge of the notch 94 of the angle adjusting ring 95, the protrusion 127 on the outer periphery of the lid 122 is faster than the signal cable 89.
Can be escaped by colliding with the edge portion of the notch 94, so that the signal cable 89 can be prevented from being caught by the edge portion of the notch 94 and disconnected, and high security can be secured.

(5) Description of Basic Structure of Dome Cover Next, the dome cover 5 will be described with reference to FIGS. 51 to 57. The dome cover 5 is a light-transmitting molded part (acrylic). Resin injection molded article), and the diameter D11 of the open end 5c = 100.
It has a dome shape (hemispherical shape) with a height H11 of 52.8 mm and a height of 22.8 mm. And this dome type cover 5
Is formed to have a radius R1 of the inner spherical surface 5a = 47.1 mm,
The radius R2 of the outer spherical surface 5b is set to be 49.0 mm, and the center O11 of the inner spherical surface 5a is offset from the center O12 of the outer spherical surface 5b outside the opening end 5c by an offset amount OS of about 0.5 mm. ing. Therefore, the dome-shaped cover 5 has a thickness T11 of about 1.9 m at the opening end 5c.
m, and the thickness T12 of the center (apex) 5d portion is
It is configured to be about 2.4 mm. And its open end 5
In the portion c, a height changing portion 5e is formed along the entire circumference with a height H12 of about 8.8 mm width. This altered portion 5e has a width W11 =
About 8 mm, depth D11 = about 0.8 mm, pitch angle θ11
== about 15 °.
An area shown by a thick two-dot chain line in FIG. 55 is configured as the optically effective portion 5f. The reason why the dome-shaped cover 5 is injection-molded with an acrylic resin is as follows.
The acrylic resin has a light refractive index of 1.5, which is close to the optical lens, and a high light transmittance of 90% or more. In addition, by injection molding the dome-shaped cover 5 with an acrylic resin, it is possible to form the mirror surface with high molding efficiency and high accuracy.

In order to detachably attach the dome-shaped cover 5 to the front surface 2a of the cylindrical main body 2, FIG.
57, three protruding pieces 5g are integrally formed at three equally spaced positions on the outer periphery of the opening end 5c of the dome-shaped cover 5, and three protruding pieces are formed on the inner periphery of the opening end 5c. Inside of 5g, each pair, a total of six positioning recesses 5h, 5i
Are formed adjacent to each other. And FIG.
As shown in FIG. 44, FIG. 46 and FIG.
Three notches 32 are formed at three equally spaced positions on the inner periphery of the cover mounting portion 31 integrally formed in a ring shape on the outer periphery of the front end side opening 21a of the first notch 32, and the notches 32 are clockwise. A protruding piece fitting groove 33 is formed inside the end.
Three cover positioning ribs 34 are integrally formed at positions corresponding to the insides of the three notches 32 on the inner peripheral surface of the front end side opening 21 a of the cylindrical case 21.

Therefore, the front side opening 21 of the cylindrical case 21
When the dome-shaped cover 5 is mounted on the dome-shaped cover 5, the three protruding pieces 5g of the dome-shaped cover 5 are inserted into the three notches 32 of the cylindrical case 21 at the same time, so that the open end 5c of the dome-shaped cover 5 is covered. When inserted into the inside of the attachment portion 31 from the axial direction (the direction of arrow a), the three positioning ribs 34 are relatively inserted into the three recesses 5h. next,
When the dome-shaped cover 5 is rotated in the direction of arrow c, which is a clockwise direction, in the cover mounting portion 31, three protruding pieces 5g are fitted into the three protruding piece fitting grooves 33, and at the same time, three positioning pieces are used. The ribs 34 are engaged so as to get over the three recesses 5i adjacent to the three recesses 5h against their elasticity, and the three positioning ribs 34 in the counterclockwise direction of the dome-shaped cover 5 allow the ribs 34 to engage. The rotation is prohibited, and the dome-shaped cover 5 is held in the cylindrical case 21 at the clockwise rotation position as it is. When the dome-shaped cover 5 is detached from the cylindrical case 21, the dome-shaped cover 5 is rotated in the direction of arrow d which is a counterclockwise direction, and the three protruding pieces 5g are turned into three protruding parts. When the three positioning ribs 34 are pulled out from the one-way fitting groove 33 into the three notches 32 in the counterclockwise direction, the three positioning ribs 34 cross over the three recesses 5i into the three recesses 5h against their elasticity. Then, the dome-shaped cover 5 is attached to the cover mounting portion 3 by pulling out the three protruding pieces 5 g from the three notches 32.
What is necessary is just to pull out from 1 axially (direction of arrow b).

(6) Description of the stopper for mounting the universal joint mechanism Next, the stopper 131 for mounting the universal joint mechanism 4 will be described with reference to FIGS. 37, 49 and 50. It is formed in a substantially L-shape by a synthetic resin or the like, and is attached to the front side of one arm portion 52 of the main chassis 22 by a set screw 33 with a spring washer 132 so as to be rotatable in the directions of arrows e and f. On the other hand, on the outer peripheral surface of the fastening ring 96 of the universal joint mechanism (ball joint mechanism 97) 4, an annular groove 134 that is a stopper engaging portion and has a large axial width is formed.

Then, as described with reference to FIGS. 38 and 39, the fastening ring 96 of the universal joint mechanism 4 is screwed into the outer peripheral screw 107 of the main chassis 22 by the inner peripheral screw 105 to form the spherical portion 91 of the lens barrel 71. Is pressed against the spherical base 93 by pressing the stopper 131 with a screwdriver or the like, and against the frictional force of the spring washer 132, the arrow is set around the set screw 133 to the position shown by the one-dot chain line in FIG. Rotate in the e direction to escape. Then, after the spherical portion 91 is fastened by the fastening ring 96, the stopper 131 is pushed by a screwdriver or the like to around the set screw 133 against the frictional force of the spring washer 132 in FIG.
Rotate and return in the direction of arrow f to the position shown by the solid line at 9
Connect the tip 131a of the stopper 131 to the fastening ring 96.
And the front end 131a thereof is pressed against the outer peripheral surface of the fastening ring 96 in the annular groove 134. Then, the stopper 131 functions to prevent the fastening ring 96 from loosening, and natural loosening of the fastening ring 96 due to vibration or the like can be prevented.

By mounting such a stopper 131 on the main chassis 22, when the dome type video camera device 1 is installed on the ceiling 14 or the like from below, the cylindrical main body 2 is screwed to the ceiling 14 or the like. Later, since the fastening ring 95 of the universal joint mechanism 4 was accidentally loosened too much to set the orientation of the lens barrel 71, the inner peripheral screw 105 of the fastening ring 95
Even if the stopper 131 is detached from the outer peripheral screw 107, the tip 131a of the stopper 131 can be prevented from dropping down from the main chassis 22 below the fastening ring 96. Therefore, during the work of attaching the dome type video camera device 1 to the ceiling 14 or the like, the lens barrel 71
Can be prevented beforehand from accidentally dropping under its own weight and being damaged, thereby greatly improving the safety of the work of attaching the dome type video camera device 1 to the ceiling 14 or the like. be able to.

FIGS. 51 and 52 show the stopper 13
1 shows a modification of the first embodiment, wherein a main chassis 22 is provided.
A stopper guide 135 is integrally formed on the front surface of the arm portion 52 at a position outside the mounting position of the stopper 131 so as to be parallel to the axial direction of the cylindrical case 21 and to the rear (in the direction of arrow a) inside the stopper guide 135. An inclined surface 136 is formed so as to approach the outer periphery of the fastening ring 96 as it proceeds. Then, the stopper 131 is attached to the main chassis 22.
The torsion coil spring 137 is inserted between the stopper 131 and the arm 52 around the set screw 133 attached to the front surface of the arm 52.
7, both ends 137a and 137b are locked to the stopper 131 and the stopper guide 135. The stopper 131 is slid in the direction of arrow b, which is the front side, with respect to the main chassis 22 by the compression repulsive force of the torsion coil spring 137, and the stopper 131 is rotated in the direction of arrow e, which is the outer peripheral side, by the torsional repulsive force. It is energizing.

Therefore, according to the modification of the stopper 131, when the set screw 133 is loosened in the direction of arrow b, the stopper 131 is guided by the torsion coil spring 137 along the slope 136 of the stopper guide 135. While being pushed in the direction of the arrow b to the separated position indicated by the one-dot chain line in FIGS. Next, the fastening ring 96 of the universal joint mechanism 4 is connected to the main chassis 22 by the inner peripheral screw 105 thereof.
After screwing into the outer peripheral screw 107 of the
When the screw 33 is tightened by a screwdriver in the direction of arrow a, the stopper 131 is guided along the inclined surface 136 of the stopper guide 135 against the torsion coil spring 137, and reaches the engagement position shown by the solid line in FIGS. a
The stopper 131 is rotated in the direction of arrow f while being pushed in the direction, and the tip 131 a of the stopper 131 is automatically engaged in the annular groove 134 of the fastening ring 96. Therefore, the stopper 131 is connected to the fastening ring 96 only by tightening or loosening the set screw 133 in the directions of the arrows a and b with a screwdriver.
Can be automatically adjusted in the directions of the arrows e and f between the engagement position and the separation position with respect to, and the assembly work of the universal joint mechanism 4 can be performed with high efficiency.

As shown in FIGS. 29 and 35 to 37, a front cover 23 formed in a disk shape with a molded component (molded product such as ABS resin) has a circular hole 23a formed in the center thereof. As a result, it is inserted into the outer periphery of the outer peripheral screw 107 and is inserted axially inside the front side opening 21 a of the cylindrical case 21, and the front side cover 23 is placed on the front side of the three arm portions 52 of the main chassis 22. It is detachably screwed by a set screw 65. Therefore, the stopper 131 is closed inside the front cover 23. Two screw insertion tubes 23b are integrally formed at 180 ° opposite positions on the outer periphery on the rear side of the front cover 23 in parallel with the axial direction of the cylindrical case 21. Then, these two screw insertion tubes 23b are connected to the chassis cover plate 24.
The two screw insertion holes 66 are formed on the outer periphery of the chassis cover plate 24 at the same phase position as those of the two screw insertion cylinders 23b. Therefore, the dome type video camera device 1 is
4 and the like, from below, two setscrews 67 are inserted from below into the two screw insertion tubes 23b by a screwdriver, and these two setscrews 67 are inserted into the two screw insertion holes 66 of the chassis cover plate 24. The cylindrical main body 2 can be easily screwed to the ceiling 14 or the like by these two setscrews 67.

(7) Attaching work of the dome type video camera device to the ceiling and the like, and explanation of how to use the monitor output terminal at that time. First, unpack the dome-type video camera device 1 and attach the dome-type cover 5 to the cylindrical main body 2.
Remove from In this state, the fastening ring 96 of the universal joint mechanism 4 (ball joint mechanism 97) is in the fastening state, and the optical block 3 is locked while being inserted into the notch 94 of the angle adjusting ring 95.

Therefore, the coaxial cable connecting the monitor television in the monitoring room is connected to the chassis cover plate 24 of the tubular main body 2.
After being connected to the upper coaxial cable terminal 12, the rear surface (ceiling surface) 2d of the cylindrical main body 2 is applied to the ceiling 14 or the like from below, and the logo mark 7 on the front surface 2a of the cylindrical main body 2 is taken in the direction in which the photographing is desired. When turned, the microphone 6 for sound collection is set in the direction in which shooting is desired. Then, two setscrews 67 are sequentially inserted into the two screw insertion guides 23b from below the cylindrical main body 2 by a screwdriver, and the chassis cover plate 24 is fastened to the ceiling 14 or the like by the two set screws 67. The cylindrical main body 2 is fixed to the ceiling 14 or the like.

Next, the locking of the optical block 3 is released by slightly loosening the fastening ring 96 of the universal joint mechanism 4. Since the stopper 131 prevents the fastening ring 96 from falling off, the fastening ring 96 can be loosened with ease. be able to. After unlocking the optical block 3, the azimuth (direction and angle) of the lens barrel 71 is set. At this time, the lens barrel 71 is moved around the rotation center O by an arrow X,
Since the rotation can be freely adjusted at a large angle in all directions indicated by the Y and Z directions, the azimuth of the lens barrel 71 can be set quickly and easily. When adjusting the angle of the lens barrel 71, if the lens barrel 71 is adjusted while being inserted into the notch 94 of the angle adjusting ring 95, the angle θ can be smoothly adjusted within a large range. Can be adjusted. After the orientation of the lens barrel 71 is set, the logo mark 85 is adjusted horizontally while checking the vertical direction of the logo mark 85 on the front surface 83a of the convex portion 83 on the outer periphery of the lens barrel 71. Is rotated around the optical axis F, and the vertical direction of the image to be captured is set correctly. Therefore, after that, the convex ring 83 and the like of the lens barrel 71 are pressed by hand to prevent the rotation of the lens barrel 71 while the fastening ring 96 of the universal joint mechanism 4 is held.
To lock the optical block 3.

After that, the focus ring 81 and the zoom lever 82 on the outer periphery of the lens barrel 71 are rotationally adjusted to set the photographing range and focus, and at the installation site,
The photographing direction, the photographing range, and the in-focus state can be confirmed. That is, as shown in FIG.
When the dome-type video camera device 1 is mounted so as to be embedded in the camera mounting hole 15 such as the dome-shaped video camera device 1 (in this case, the dome-type video camera device 1 is mounted using a ceiling mounting device not shown). The L-type plug 14 using the monitor output cable 142 having
1 is inserted laterally into the monitor output terminal 9 on the back surface 2c of the tubular main body 2, and the monitor output cable 142 is connected to a portable monitor television 143 via a conversion connector cable (not shown) or the like, and the monitor image is displayed. Is displayed on the portable monitor television 143, and the photographing direction, the photographing range, and the in-focus state can be confirmed. In addition,
At this time, the sound collecting situation of the sound generated around the dome type video camera device 1 can also be heard through the sound collecting microphone 76 with the speaker of the portable monitor television 143.

At this time, the L-type plug 141 is inserted from the lateral direction into the lateral monitor output terminal 9 of the cylindrical main body 2, and the monitor output cable 142 is connected to the cylindrical main body 2.
Can be hung downward at the lateral side position of the optical block 3, so that when finely adjusting the azimuth of the optical block 3, there is no fear that the monitor output cable 142 interferes with the optical block 3 or the like. Fine adjustment of the azimuth can be easily performed. Since the monitor output terminal 9 is solder-dipped on the signal processing board 25 in parallel with the mounting surface, there is little danger that the signal processing board 25 will be damaged when a plug is inserted into or removed from the monitor output terminal 9.

As shown in FIG. 54, when the cylindrical main body 2 is installed below the ceiling surface, the monitor output terminal 9 is disposed below the ceiling 14 or the like, so that a straight type plug 144 is provided. A monitor output cable 145 can be used, and the
3, the photographing direction, the photographing range and the in-focus state can be confirmed. Then, after that, the dome-shaped cover 5 is inserted and attached inside the cover attachment portion 31 of the tubular main body 2, and the work of installing the dome-shaped video camera device 1 on the ceiling 14 or the like is completed. At this time, the open end 5 of the dome-shaped cover 5
Since c is inserted into the inside of the cover attachment portion 31 and attached, it is difficult for dust and the like to enter the dome-shaped cover 5, and it is possible to prevent the inside of the dome-shaped cover 5 from being contaminated with dust and the like and the captured image becomes unclear. Can be prevented.

(8) Description of Basic Structure of Dome Cover Molding Apparatus Next, an injection molding apparatus 151 made of acrylic resin for the dome cover 5 will be described with reference to FIGS. 58 to 61. A molding die 151 of a side gate type is used for the mold 151.
One of three protruding pieces 5g on the outer periphery of the dome-shaped cover 5 at a lateral side of the parting surface (divided surface) of the dome-shaped cavity 154 formed between the base member 52 and the core-side die (movable die) 153. At a position corresponding to the width W21 = about 8 mm and the thickness T21 =
A thick and thick side gate 156 of about 2 mm is formed. A nest 157 for slowing the flow of the molten resin is inserted along the parting surface,
The nest 157 has a thickness T22 of about 8 mm. Then, the core-side spherical surface 1 of the dome-shaped cavity 154
54a and the mold-side spherical surface 154b are both mirror-finished, and the radii R21 and R22 and the offset amounts OS of the centers O21 and O22 are different from each other. Radius R11,
It is offset in the same direction and in the same direction as the offset amount OS of R12 and the centers O11 and O12. At the inner side of the insert 157 in the core side mold 153, a thickness changing portion 158 having a thickness T23 = about 8.8 mm is formed along the parting surface 155.
One projection piece processing part 159 is formed. Therefore, the parting surface side 154c of the dome-shaped cavity 154 is formed with a narrow gap, and the central (apex) side 154d is formed with a wide gap. A plurality of gas bends 160 having a thickness T24 of about 0.02 mm are radially formed on the cavity side of the insert 157. In addition, the gas bends 160 may be arranged intensively at the side gate facing position 162 opposite to the side gate 156.

The injection molding apparatus 151 is constructed as described above, and the molten resin MP of acrylic resin injected from the injection nozzle (not shown) passes through the runner 161 from the side gate 156 into the dome-shaped cavity 154. The dome-shaped cover 5 having the structure and the shape described with reference to FIGS.

At this time, by making the side gate 156 thicker and thicker, the molding cycle can be made sufficiently long up to about 90 seconds, and there is no concern about gate solidification unlike the pin gate type molding die. In addition, the inflow speed of the molten resin MP can be sufficiently reduced. Therefore, the dome-shaped cover 5 with little residual stress can be formed with high precision. Further, even after the molten resin MP is filled in the dome-shaped cavity 154, the gate is hard to be solidified. Can be removed. Therefore, the dome-shaped cover 5 on which the shape of the dome-shaped cavity 154 is accurately transferred can be formed with high accuracy, and the high-quality dome-shaped cover 5 without deformation such as distortion can be formed. By using a thick and thick one-point gate, a dome-shaped cover 5 that does not generate weld lines and does not cause image distortion can be formed.

Then, the radius R21 of the core-side spherical surface 154a and the cavity-side spherical surface 154b of the dome-shaped cavity 154,
Due to the offset of R22, its dome cavity 1
The parting surface side 154c of 54 has a narrow gap, and the central part side 154d has a wide gap, so that the flow of the molten resin MP flowing into the dome-shaped cavity 154 flows along the parting surface 155. Than speed
The speed of detour to the central portion 154d can be increased, so that the gas accumulation phenomenon does not occur in the dome-shaped cavity 154. Further, since the nest 157 is incorporated along the parting surface 155 to form a plurality of gas bends 160, the gas in the dome-shaped cavity 154 is removed from the plurality of gas bends 160 as the molten resin MP flows into the dome-shaped capacities 154. , And the gas accumulation phenomenon does not occur in the dome-shaped cavity 154. Further, a wall thickness changing portion 158 is formed along the parting surface of the dome-shaped cavity 154, and the parting surface 155 in the dome-shaped cavity 154 is formed.
The speed of the molten resin MP flowing along the
d, the molten resin MP diverted to the central side 154d reaches the side gate facing position 162, so that the parting surface 1
55 can be made slower than the time when the molten resin MP flowing along 55 reaches the side gate facing position 162,
Gas accumulation does not occur on the side gate facing position 162 side in the dome-shaped cavity 154.

As a result, according to the injection molding apparatus 151, when the dome-shaped cover 5 is injection-molded, as shown in FIGS. Molten resin MP flowed in
From the speed V1 at which the side reaches the side gate facing position 162 from both sides in the circumferential direction along the parting direction 155,
Bypassing the central side 154d and bypassing the side gate opposite position 16
2 can be increased. Therefore, the gas generated in the dome-shaped cavity 154 can be smoothly and completely pushed out to the side gate facing position 162 at the leading end surface MP1 in the inflow direction of the molten resin MP, and can be released.
Since no gas pool is generated in the gas reservoir 4, it is possible to prevent gas burning failure due to the generation of the gas pool.

That is, FIGS. 61 (A) to (D) are drawings illustrating gas burning defects which are likely to occur during the injection molding of the dome type cover 5, and flow from the side gate 156 into the dome type capacity 154. A speed V1 at which the molten resin MP reaches the side gate facing position 162 from both sides in the circumferential direction along the parting surface 155 is faster than a speed V2 at which the molten resin MP bypasses the central portion side 154d and reaches the side gate facing position 162. In this case, as shown in FIGS. 61A to 61C, after the molten resin MP flowing on both sides along the parting surface 155 reaches the side gate facing position 162 first and is fused, the central part is melted. As shown in FIG. 61 (C), the molten resin MP that has bypassed the side 154d tries to reach the side gate facing position 162 and is fused therewith. Pool 1 sealed by molten resin MP at a position near side gate facing position 162 of FIG.
63 occurs. The gas reservoir 163 is reduced by the pressure of the molten resin MP as shown in FIG.
And the dome-shaped cover 5 becomes defective.

(9) Description of Ceiling Embedding Device Next, referring to FIGS. 12 to 26, the ceiling embedding device 181 will be described.
The ceiling embedding device 181 is pressed by sheet metal and has a horizontal camera mounting portion 182.
Are formed in a ring shape. A pair of left and right overhanging portions 183 projecting left and right sides are integrally formed at a position 180 ° opposite to the outer periphery of the camera mounting portion 182, and the right and left overhanging portions 183 extend downward from both left and right ends. In addition, a pair of left and right brackets 184 are formed, which are substantially L-shaped and left and right symmetrically pressed outward. A pair of left and right ceiling fixing portions 191 are incorporated in a pair of left and right notches 185 formed along the center of the pair of left and right overhanging portions 183 and the bracket 184. Arrows g and h on the left and right sides of the camera mounting portion 182 by the pair of left and right slide mechanisms 186 (camera mounting portion 1).
(Indicated at right angles to the direction of arrow a, which is the direction in which the dome-type video camera device 1 is attached to the dome-type video camera device 82). The pair of left and right slide mechanisms 186 is a pair of left and right overhanging portions 1.
A pair of guide grooves 187 formed in parallel along 83
And a pair of guide pins 188 slidably engaged with these guide grooves 187.

A pair of left and right symmetrical ceiling fixing portions 191 are respectively formed with guide plates 192 vertically arranged in the respective cutouts 185, and are formed by pressing the guide plates 192 outward at right angles from the lower ends thereof. Horizontal lower holding plate 19
3, a slide plate 194 that is slid in the directions of arrows a and b, which are vertical directions along the outside of the guide plate 192, and the slide plate 194 is breathed out perpendicularly from the lower end (or upper end) of the slide plate 194. A horizontal upper holding plate 195 and a fastening screw 196 vertically inserted between a pair of upper and lower holding plates 193 and 195 along the center thereof are provided. A slide portion 192a pressed at the upper end of the guide plate 192 is slidably engaged in a pair of left and right overhanging portions 183 of the camera mounting portion 182 in the directions of arrows g and h. Guide pin 18
8 is fixed. The horizontal upper surface of each lower holding plate 193 is disposed at substantially the same height as the upper surface of the horizontal lower end portion 184a of the bracket 184. Further, each fastening screw 196 is vertically inserted upward from below into a screw insertion hole (so-called stupid hole) 197 formed at the center of the lower holding plate 195, and is formed at the center of the upper holding plate 195. A screw engagement hole (so-called female screw hole) 198 is screw-fitted. The upper end of each fastening screw 196 is inserted into a screw insertion hole 199 of a horizontal screw support portion 192b pressed at right angles to the center of the outside of the upper end of the guide plate 192. It is supported by the support portion 192b.

Therefore, each fastening screw 196 is connected to the lower holding plate 1.
The screw 93 is rotatably and vertically supported between the screw 93 and the screw support portion 192b. By rotating the fastening screw 196 in a forward and reverse direction with a screwdriver from below, the fastening screw 196 and the upper holding plate 195 are rotated. The upper holding plate 195 can be adjusted up and down in the directions of arrows a and b, which are the up and down directions, by the screw feeding action by the screw engagement holes 197. However, at this time, the slide plate 195 integrated with the upper holding plate 195 is slid in the directions of arrows a and b so as to be guided by the guide plate 192, thereby preventing rotation of the upper holding plate 195. Then, a ceiling sandwiching dimension T corresponding to an interval between the upper sandwiching plate 195 and the lower sandwiching plate 193 is set.
A scale 201 indicating 31 is vertically displayed on one side of the notch 185 of each bracket 184. The scale 201 has a height of 1 with respect to the upper surface of the lower holding plate 193.
It is displayed on a scale 202 at intervals of 5 mm from 0 mm to 30 mm.

A camera temporary fixing mechanism 205 is attached to the outer periphery of the lower part of the camera mounting part 182, and the camera temporary fixing mechanism 205 is vertically pressed from the outer periphery of the camera mounting part 182 to a total of four. One camera insertion guide 206 and these camera insertion guides 206
A notch 207 formed at the center of the upper end of the camera mounting portion 182 and a positioning pin 208 and a caulking pin 209 are horizontally tightened on the upper surface of the camera mounting portion 182, and the camera mounting portion 18 is
2 is bent vertically downward from the outer periphery of notch 2
07, a total of four leaf springs 2 of substantially L-shape inserted in
10 is provided. At the position near the upper end of the outer peripheral surface of the cylindrical case 21 constituting the cylindrical main body 2 of the dome type video camera device 1, a cross section as shown in FIG. A rib 212 having a substantially hemispherical cross section is formed, and a total of four leaf springs 2 are formed.
A hemispherical convex portion 213 into which a groove 211 is detachably engaged as shown in FIG. 15 or a hemispherical concave portion into which a rib 212 is detachably engaged as shown in FIG. 2
14 are formed. In the case where the rib 212 is formed, the production cost of the mold for injection-molding the cylindrical case 21 can be significantly reduced as compared with the case where the groove 211 is formed on the outer periphery of the cylindrical case 21.

The camera mounting portion 182 is provided at 180 ° intervals facing a pair of screw insertion holes 66 formed in the chassis cover plate 24 of the dome type video camera device 1.
Set screw holes (refer to holes that are tapped) 22
1, 222 and 223 are reference lines P3 in three directions on the same circumference.
1, formed vertically on P32 and P33.

A ring-shaped sealing cover 231 inserted into the outer periphery of the cylindrical main body 2 of the dome-type video camera device 1 is formed of a molded part. Is substantially the same as the outer diameter of the cylindrical cover mounting portion 231 integrally formed on the outer periphery of the lower end of the cylindrical main body 2. Then, as shown in FIGS. 30, 31, and 37,
A notch 232 is formed in a part of the outer periphery of the cover attaching portion 31 at a position corresponding to a position directly below the sound collecting hole 35 opened laterally on the outer periphery of the cylindrical main body 2. A pair of small projections 233 which are positioning means engaged on both sides in the direction are integrally formed on a part of the inner periphery of the sealing cover 231. And this sealing cover 23
1 has an upper end 31 of a cover attaching portion 31 of the cylindrical main body 2.
A total of four leaf springs 234, which are locking means for a, are attached at 90 ° intervals by set screws 235, respectively. On the lower surface of the sealing cover 231, in front of the pair of small projections 233, a circumferential position display means indicated by a logo mark 236 such as a manufacturer name is displayed.

The ceiling embedding device 181 is configured as described above. The dome type video camera device 1 can be embedded in the ceiling 14 in the following manner. That is, first, as shown in FIG. 22, a camera mounting hole 15 having a predetermined size (for example, diameter D31 = 145 mm) is formed in the ceiling 14 with a cutter. Next, as shown in FIG.
Is rotated clockwise or counterclockwise by a screwdriver, and the upper holding plate 195 is moved upward and downward by arrows a,
By adjusting the slide in the direction b, a pair of upper and lower holding plates 193,
The ceiling insertion dimension T31 between 195 is adjusted to be slightly larger than the thickness T32 of the ceiling 14. In addition, this ceiling insertion dimension T
31 is adjustable up to a maximum of 30 mm.

Next, as shown in FIG. 22, a pair of left and right ceiling fixing portions 191 are slid by a pair of left and right sliding mechanisms 186 in a direction of an arrow g which is an inward direction of the camera mounting portion 182, and a pair of left and right upper holding members is held. The dimension D32 between the left and right ends of the plate 195 is made smaller than the diameter D31 of the camera mounting hole 15. Then, as shown in FIG. 22, the camera mounting portion 182 of the ceiling embedded device 181 is inserted upward into the camera mounting hole 15 in the direction of arrow a, and as shown in FIG. The lower end 184a contacts the lower surface of the ceiling 14 from below. Then, the camera mounting portion 182 is horizontally embedded to a position above the ceiling 14.

Next, as shown in FIG. 23, a pair of left and right ceiling fixing portions 191 are slid by a pair of left and right slide mechanisms 186 in a direction indicated by an arrow h, which is an outward direction of the camera mounting portion 182, to form a pair of left and right holding plates. 193, 195 ceiling 1
4 is inserted horizontally into the upper and lower positions in the direction of arrow h. Then, the pair of left and right upper holding plates 195 is placed on the upper part of the ceiling 14, and thereafter the entire ceiling embedding device 181 is placed on the upper part of the ceiling 14 by the pair of left and right upper holding plates 195. Therefore, the ceiling embedded device 181
The ceiling embedded device 181 does not fall naturally downward from the camera mounting hole 15 even if the hand is released. At this time, as shown in FIG. 16, a pair of left and right lower holding plates 193 is provided.
The alignment mark 203 formed on the lower surface of the pair of left and right brackets 184 is aligned with the alignment mark 204 formed on the lower surface of the lower end 184a of the pair of left and right brackets 184, so that the ceiling 14 formed by the pair of left and right holding plates 193 and 195 can be used.
Can be set to a correct value.

Then, after this, the two fastening screws 196
Is rotated from below by a screwdriver in a clockwise direction, which is a fastening direction, so that a pair of left and right upper holding plates 195 are pressed against the upper surface of the ceiling 14, and a pair of left and right holding plates 193,
The ceiling 14 is firmly fixed between 195 in the directions of arrows a and b from above and below. At this time, since only the two fastening screws 196 need to be tightened with a screwdriver in a state where the hand is released from the ceiling embedding device 181, the fastening operation can be easily performed.

Further, at this time, since the upper and lower surfaces of the ceiling 14 are horizontally held from above and below by the pair of left and right horizontal holding plates 193 and 195, the ceiling 14 is only compressed in the thickness direction. Cracks and the like hardly occur, and the ceiling 14 is hardly destroyed. Moreover, when the upper holding plate 195 is pressed against the upper surface of the ceiling 14 by the fastening screw 196, the slide plate 194 integrated with the upper holding plate 195 is supported by the guide plate 192. Is supported at both ends by the ceiling 14 and the guide plate 192. Therefore, the fastening screw 196
Is firmly fastened, the upper holding plate 195 is
6 without any twisting.
There is no inconvenience that the 96 is bent substantially in a V shape.

Then, next, as shown in FIG. 24, the dome-shaped cover 5 of the dome-shaped video camera device 1 is removed from the cylindrical main body 2, and a coaxial cable (not shown) connected to the monitor television in the monitoring room is provided. After being connected to the coaxial cable terminal 12 on the chassis cover plate 24 of the cylindrical main body 2, the cylindrical main body 2 is perpendicularly moved in the direction of arrow a from the camera mounting hole 15 to the inside of a total of four camera insertion guides 206 of the ceiling embedded device 181. Insert Then, as shown in FIG. 15, almost simultaneously with the parallel contact of the chassis cover plate 24 of the cylindrical main body 2 with the lower surface of the camera mounting portion 182, the groove 211 on the outer periphery of the cylindrical main body 2 is temporarily closed. The projection mechanism 213 of the four leaf springs 210 of the stopper mechanism 205 is engaged against the elasticity of these leaf springs 210, and the dome type video camera device 1 is mounted on the ceiling embedded device 181 by the four leaf springs 210. Even if the dome-type video camera device 1 is released afterwards, the dome-type video camera device 1 will not drop naturally due to its own weight. In this case,
As shown in FIG. 26, the ribs 212 on the outer periphery of the cylindrical main body 2 are engaged with the concave portions 214 of the four leaf springs 210 of the camera temporary fixing mechanism 205 against the elasticity of these leaf springs 210. Alternatively, the dome type video camera device 1 can be temporarily fixed to the ceiling embedded device 181.

Then, the dome-type video camera device 1 is connected to the camera mounting portion 1 of the ceiling embedded device 181 in this manner.
When the camera is temporarily fixed to the lower portion of the main body 82 by the camera temporary fixing mechanism 205, the groove 211 or the rib 21 on the outer circumference of the cylindrical main body 2
2 is engaged, it is possible to freely rotate the cylindrical main body 2 in the c and d directions around its vertical axis. Therefore, in this temporarily fixed state, the cylindrical main body 2 can be rotated and adjusted around the vertical axis in the directions of arrows c and d, and the sound collecting microphone 6 on the front surface 2a can be easily turned in the photographing direction. .

Then, while adjusting the direction of the sound collecting microphone 6 in this manner, as shown in FIG.
Of the pair of screw insertion guides 23b into one of three sets of screw holes 221, 222, and 223 of the camera mounting portion 182.
Aligned right below the set, two setscrews 67 are inserted from below into a pair of screw insertion guides 23b of the cylindrical main body 2 by a driver, and inserted through a pair of screw insertion holes 66 of the chassis cover plate 24. Then, the cylindrical main body 2 is completely fixed to the lower surface of the camera mounting portion 182 by being fastened inside one of the three sets of screw holes 221, 222, 223 of the camera mounting portion 182.

After the dome type video camera device 1 is embedded in the ceiling 14 in this way, as described above, the azimuth (photographing direction and photographing angle) of the optical block 3 are determined.
To adjust. Then, as shown in FIGS. 12, 13 and 25, the sealing cover 231 is inserted into the outer periphery of the cover attaching portion 31 of the cylindrical main body 2 through the center hole 231a, so that a total of four leaf springs 234 are formed. The cover mounting portion 31 is locked to the upper end 31a of the
1 and the lower surface of the ceiling 14, a total of four leaf springs 210
The sealing cover 231 can be detachably attached so as to sandwich the sealing cover 231 without backlash. The sealing cover 231 covers the camera mounting hole 15 and the ceiling embedding device 181 from below at the outer peripheral position of the cylindrical main body 2.

At this time, as shown in FIGS. 18 and 25,
While confirming the position of the pair of small projections 233 by the logo mark 236 displayed on the lower surface of the sealing cover 231, the pair of small projections 233 are fitted into the notches 232 of the cover attachment portion 31 of the cylindrical main body 2. And the cylindrical body 2
Of the sealing cover 231 in the circumferential direction is performed. As a result, although the camera mounting hole 15 of the ceiling 14 and the ceiling embedding device 181 are covered from below by the sealing cover 231 at the outer peripheral position of the cylindrical main body 2,
The sound collecting microphone 6 inside the cylindrical main body 2 embedded in the ceiling 14 collects sound generated at a position below the ceiling cover 231, that is, a position below the ceiling 14 through the sound collecting hole 35 and the notch 232. Will be able to As described above, the monitor output terminal 9 of the tubular main body 2
The work of inserting the L-type plug 141 of the monitor output cable 142 into the monitor monitor 143 and checking the captured image with the portable monitor television 143 is performed before the sealing cover 231 is attached to the outer periphery of the cylindrical main body 2. Then, as shown in FIGS. 12 and 23, the opening end 5 c of the dome-shaped cover 5 is connected to the cover mounting portion 3 of the cylindrical main body 2.
A series of ceiling embedding operations can be completed by inserting from below into the inside of the device 1 and detachably attaching it as described above.

In the ceiling mounting device 181, three sets of screw holes 221 are formed in the camera mounting portion 182.
When the dome type video camera device 1 is screwed to the lower surface of the camera mounting portion 182, a pair of setscrews 67 are used to screw these three sets of screw holes 221, 222, 223. Of the dome-type video camera device 1 with respect to the ceiling embedded device 181, the circumferential position can be freely selected. is there. Accordingly, the sound collecting microphone 6 can be easily directed to a desired photographing direction, and the operation of adjusting the azimuth of the optical block 3 can be easily performed in a short time.

(10) Description of Protective Film of Dome Cover Next, as shown in FIGS. 27 and 28, in the dome video camera device 1, immediately after the dome cover 5 is formed, the dome is formed. Protective film 2 covers entire surface of mold cover 5
A method of covering with 41 and shipping from the factory is adopted.
As the protective film 241, various materials such as paper, cloth, and various plastic films can be used, and a thin additive-free polyethylene film is optimal. Then, as shown in FIGS. 27A, 27B, and 27C, when covering the entire surface of the dome-shaped cover 5 with the protective film 241, the dome-shaped cover 5 is placed on the central portion 241a of the protective film 241. With the center portion 5d mounted, the protective film 241 is used to cover the outer spherical surface 5 of the dome-shaped cover 5.
It is preferable to cover the entire surface of the dome-shaped cover 5 by inserting the outer peripheral portion 241b of the protective film 241 from the opening end 5c of the dome-shaped cover 5 so as to be folded into the inner spherical surface 5a. .

Then, as shown in FIG. 28A, with the entire surface of the dome-shaped cover 5 covered with the protective film 241, the dome-shaped cover 5 is placed inside the cover mounting portion 31 of the cylindrical main body 2. And attach it. At this time, if the protective film 241 is a thin non-added polyethylene film, the protective film 241 has good adhesion to the surface of the dome-shaped cover 5, and the dome-shaped cover 5 can be easily fitted into the cover mounting portion 31. Can be. Moreover,
At this time, since the outer peripheral portion 241b of the protective film 241 is folded inside the opening end 5c of the dome-shaped cover 5, the protective film 241 is not easily peeled off from the outside. Then, in this state, the entire dome type video camera device 1 is packed and shipped from the factory.

When embedding the dome type video camera device 1 into the ceiling, first, as shown in FIG. 28A, the outside of the protective film 241 on the surface of the dome type cover 5 is, Holding the dome-shaped cover 5 in the counterclockwise direction with respect to the cylindrical main body 2 by gripping the dome-shaped cover 5 with respect to the cylindrical main body 2 while holding the outer periphery of the cylindrical main body 2 with the right hand from below.
28, the cylindrical main body 2 is rotated as shown in FIG.
From below in the direction of arrow b.

Then, as described above, the dome type video camera device 1 is
After adjusting the orientation of the optical block 3,
The dome-shaped cover 5 is again attached to the cover attaching portion 31 of the cylindrical main body 2.
When it is mounted inside, as shown in FIG.
Again, for example, the outside of the protective film 241 on the surface of the dome-shaped cover 5 is grasped from below with the right hand, and the outer peripheral portion 241b of the protective film 241 is held with the left hand.
Can easily be picked out from the open end 5c of the rim. Therefore, the protection film 241 can be easily spread while holding the dome-shaped cover 5 from the outside of the protection film 241 with the right hand.

Then, as shown in FIG. 28 (C), after inserting the dome-shaped cover 5 with the right hand inside the cover mounting portion 31 of the cylindrical main body 2 in the direction of arrow a, the arrow in the clockwise direction is turned. By rotating in the direction c, the open end 5 c of the dome-shaped cover 5 is attached to the inside of the cover attaching portion 31. Then, if the right hand is lowered in the direction of arrow b, the protective film 241 is put together with the right hand on the dome-shaped cover 5.
You will be away from As described above, the dome-shaped cover 5
The work of attaching and detaching the dome-shaped cover 5 to and from the tubular main body 2 can be performed extremely easily without causing a fingerprint or the like of an operator to adhere to the dome-shaped body 2 at all. At this time, if an unadded polyethylene film is used for the protective film 241, since the adhesiveness to the surface of the dome-shaped cover 5 is good, hand slip during the attachment / detachment work of the dome-shaped cover 5 is less likely to occur. The work can be performed more easily, and in particular, the protective film 241 can be covered with an adhesive or the like.
There is no need to fix it.

When the entire surface of the dome-shaped cover 5 is covered with the protective film 241 and shipped from the factory, fingerprints (oils such as fatty acids), dust and dirt adhere to the surface of the dome-shaped cover 5, Since damage can be prevented beforehand, the quality of an image captured through the dome-shaped cover 5 by the optical block 3 does not deteriorate, and a high-quality image can be captured.

(11) Description of the dome-type cover of the dome-type video camera device of the present invention Next, referring to FIGS. 1 to 11, the dome-type cover 5 of the dome-type video camera device 1 of the present invention is improved. The following is an explanation of the structural part. That is, as described above, the optical block 3 of the dome type video camera device 1 is attached to the front surface 2a of the cylindrical main body 2 by the universal joint mechanism 4, and as shown in FIGS. Is configured to be adjustable within an angle of 72 ° in the X direction, which is a tilt direction, but is configured to be rotationally adjustable over an entire range of 360 ° in the arrow Z direction, which is a pan direction. Therefore, as described above, when the dome type video camera device 1 is embedded in the ceiling 14 or the like by the ceiling embedding device 181, when the mounting direction of the ceiling embedding device 181 to the ceiling 14 is significantly wrong or afterward, the optical block is removed. Even when it is necessary to change the shooting direction of the dome-type video camera device 1 to 180 ° or the like, while keeping the cylindrical main body 2 of the dome-type video camera device 1 fixed to the ceiling embedded device 181, only the optical block 3 is rotated 360 °. Since the rotation can be adjusted over the entire area, the optical block 3 can be easily and accurately set in any desired direction at any time. However, in order to set the sound collecting microphone 6 in a desired direction, as described above, the ceiling embedded device 18 is required.
When the cylindrical main body 2 is screwed to the main body 1 with two setscrews 67, the mounting direction of the cylindrical main body 2 is selected such that one of three sets of screw holes 221 222 223 is selected. Need to be oriented as much as possible.

Under such conditions, the improved dome-shaped cover 5 of the dome-shaped video camera device 1 of the present invention.
As shown in FIGS. 1 to 6, a portion corresponding to an angle adjustment region of about 72 ° in the tilt direction of the optical block 3 is configured as a long hole-shaped light transmissible region 501 formed transparent or translucent. The other area of the dome-shaped cover 5 is formed as an opaque light-impermeable area 502.
Therefore, according to the dome-shaped cover 5, when the dome-shaped cover 5 is attached to the front surface 2 a of the cylindrical main body 2 and covers the outer periphery of the movable range of the optical block 3, only the imaging direction of the optical block 3 can transmit light 501. Allows light to pass through,
Since all other areas are concealed by the light non-transmissible area 502, internal mechanisms such as the optical block 3 and the universal joint mechanism 4 of the dome-shaped cover 5 are minimized from being seen through from the outside ( It is possible to make the internal mechanism difficult to see from the outside). As a result, it is possible to achieve the original purpose of keeping the customer or the like from being aware of the monitoring by the video camera (performing the monitoring by the video camera without intimidating the purpose).

In order to make the light transmissible area 501 of the dome-shaped cover 5 transparently injection-molded with an acrylic resin semitransparent, a carbon material is mixed during the injection molding to adjust the light transmittance. A smoke finishing method can be implemented. In addition, there is a so-called half-mirror finish, which is an anti-reflection coating that coats the surface of the outer spherical surface 5b of the dome-shaped cover 5 with a metal powder such as aluminum. Rate, light reflectance and light absorption are 3
Generally, it is finished to about 3%. The anti-reflection coating made of metal powder also serves as an anti-static coating, so that dust adhesion due to electrostatic charging can be prevented. In addition, as a material of the antireflection coating, for example, coating of In203: indium oxide having a thickness of about 0.5 μm can be performed. The light-impermeable area 502 of the dome-shaped cover 5
As for (2), painting (or coating) with a paint that cannot transmit light, such as general black coating, can be performed.

As shown in FIG. 11, the dome-shaped light-blocking member 503 attached (attached or bonded) to the inner or outer peripheral surface of the dome-shaped cover 5 is colored black or the like. The light-impermeable area 502 of the dome-shaped cover 5 is formed by injection molding with an acrylic resin or the like, and is constituted by the light-blocking member 503 itself, and is formed by a slot-shaped notch or hole 504 formed in the light-blocking member 503. However, the same purpose can be achieved. In this case, although the number of parts of the dome-shaped cover 5 increases, the manufacturing cost can be significantly reduced as compared with the case where the light-impermeable area 502 of the dome-shaped cover 5 is coated with black or the like. It is.

By the way, as described above, the dome-shaped cover 5 has only the light-transmitting area 501 formed only in the portion corresponding to the angle adjustment area in the tilt direction of the optical block 3. When the cover 5 is detachably attached to the front surface 2a of the cylindrical main body 2, the dome-shaped cover 5 must be formed into a cylindrical shape in order to align the light transmitting area 501 with the angle adjustment area in the tilt direction of the optical block 3. It must be attached to the main body 2 so as to be rotatable 360 ° in the direction of the arrow Z which is the pan direction.

Therefore, the improved dome-shaped cover 5
Then, as shown in FIGS. 1 to 9, an upwardly open ring portion 5j having a substantially L-shaped cross section is integrally formed on the outer periphery of the open end 5c of the dome-shaped cover 5, and the ring portion 5 is formed.
a plurality of engaging claws 5 having elasticity at equal intervals in the circumferential direction of j
k is integrally molded upward and inward. When the dome-shaped cover 5 is detachably attached from below to a cover attachment portion 31 formed in a ring shape on the outer periphery of the front surface 2a of the tubular main body 2, the dome-shaped cover 5 is removed.
Is inserted into the outer periphery of the cover attaching portion 31 from below, and the plurality of engaging claws 5k are removably engaged with the upward step 31b of the cover attaching portion 31 against its elasticity. The dome-shaped cover 5 is attached to the front surface 2a of the cylindrical main body 2 so as to be rotatable 360 ° in the direction of arrow Z and to be detachable.

At this time, the dome-shaped cover 5 can be finely positioned at 360 ° in the direction of the arrow Z of the cylindrical main body 2 by the positioning means 505 as shown in FIG. The positioning means 505 includes, for example, a pair of left and right engaging claw bases 5k1 integrally formed in parallel above the ring portion 5j, and upper ends of these engaging claw bases 5k1. A pair of left and right elastic support portions 5k which are integrally molded inside and are curved in a substantially semicircular shape or the like.
2 and an engaging claw tip 5k3 integrally formed downward inside the elastic support portion 5k2, and a downward chevron 5k4 formed at the lower end of the engaging claw tip 5k3.
The upwardly-facing step 31b of the cover attaching portion 31 of the cylindrical main body 2
Chevron teeth 3 formed continuously in the circumferential direction along
1c is detachably engaged with the pair of left and right elastic support portions 5k2 by utilizing downward biasing force.
According to the positioning means 505, if the dome-shaped cover 5 is slightly rotated with respect to the cylindrical main body 2 in the direction of arrow Z, the chevron teeth 5k4 of the tips 5k3 of the plurality of engaging claws 5k are covered. The dome-shaped cover 5 rotates over the cylindrical body 2 sequentially over the chevron 31c formed continuously with the mounting portion 31 in the direction of the arrow Z against the elasticity of the pair of left and right elastic support portions 5k2. At the stopped position, the engagement between these chevron teeth 5k4 and 31c is stabilized, so that the dome-shaped cover 5 is positioned with respect to the cylindrical body 2, and the dome-shaped cover 5 is attached to the cylindrical body 2. On the other hand, it can be finely positioned in units of several mm in the entire rotation range of 360 ° in the pan direction.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made based on the technical concept of the present invention.

[0080]

The dome type video camera apparatus of the present invention having the above-described structure can provide the following effects.

According to the first aspect, the optical block attached to the cylindrical main body can be adjusted within a certain angle in the tilt direction, but can be rotated 360 ° in the pan direction.
Even if the video camera is mounted on a ceiling or the like in an appropriate direction, the panning direction of the optical block can be rotated and adjusted over 360 ° to set the shooting direction freely after the mounting,
A dome-shaped cover detachably attached to the cylindrical main body is configured to be rotatable 360 ° in the pan direction, and only a part of the dome-shaped cover corresponding to a tilt angle adjustment area of the optical block in the tilt direction is a light transmission area. On the other hand, most of the other area is configured as a light-impermeable area, so that the light-transmitting area, which is a part of the dome-shaped cover, can be easily adjusted to the shooting direction of the optical block. Since the internal mechanism such as the optical block etc. can be effectively hidden by the light opaque area which is most of the other,
In spite of the fact that the shooting direction of the optical block can be easily set to an entire 360 ° range, the internal mechanism such as the optical block of the dome-shaped cover can be made hard to see from the outside, so that customers can monitor with a video camera as much as possible. It is possible to prevent the user from noticing, and to prevent the inconvenience of making the video camera noticed by the customer or the like and causing an unpleasant feeling.

According to a second aspect of the present invention, the dome-shaped cover is formed of a member capable of transmitting light, and other portions of the dome-shaped cover except for a portion corresponding to a tilt angle adjustment region of the optical block in the dome-shaped cover are provided. Since the area was formed in a state where light could not be transmitted, the dome-shaped cover was composed of a single part,
The number of parts and the number of assembling steps can be reduced.

A third aspect of the present invention is a light blocking member which is constituted by a member which cannot transmit light and which is attached to the inner peripheral surface or the outer peripheral surface of the dome-shaped cover. Since the notch or the hole is formed, a low-cost product can be obtained.

According to a fourth aspect of the present invention, the dome-shaped cover is rotatable 360 ° in the pan direction and detachably attached to the cylindrical main body.
Since the dome-shaped cover can be positioned by the positioning means in the entire rotation range of 360 ° with respect to the cylindrical main body, the light-transmittable area of the dome-shaped cover is equivalent to an angle adjustment area corresponding to the tilt direction of the optical block. The position of the dome-shaped cover with respect to the optical block can be accurately adjusted, and the inconvenience such as the inability to shoot a video due to the displacement of the light transmitting area of the dome-shaped cover in the pan direction with respect to the optical block can be prevented.

[Brief description of the drawings]

FIG. 1 is a view for explaining an embodiment of a dome type video camera device to which the present invention is applied, in which a dome type video camera device equipped with an improved dome type cover is embedded in a ceiling by a ceiling mounting device. FIG. 6 is a partially cutaway front view showing the above.

FIG. 2 is a bottom view of FIG.

FIG. 3 is a perspective view of a dome type video camera device in which the improved dome type cover of the present invention is disassembled.

FIG. 4 is a front view of the dome type video camera device equipped with the same improved dome type cover.

FIG. 5 is a rear view of the dome type video camera device.

FIG. 6 is a top view and left and right side views illustrating the shape of the improved dome-shaped cover according to the first embodiment.

FIGS. 7A and 7B are a top view and a side view illustrating a light transmissible area and a light non-transmissible area of the improved dome-shaped cover.

FIG. 8 is a cross-sectional side view and an enlarged cross-sectional view of a main part of the improved dome-shaped cover.

FIG. 9 is a cross-sectional side view showing, on an enlarged scale, a portion where the improved dome cover is attached to a dome video camera device.

FIG. 10 is a cross-sectional side view in two directions showing the structure of a modified example of the attachment portion of the improved dome cover to the dome video camera device according to the embodiment.

FIG. 11 is an exploded perspective view illustrating a structure of a modified example of the improved dome-shaped cover of the above.

FIG. 12 is a partially cutaway front view illustrating a ceiling embedded device of a dome type video camera device having a basic structure of the present invention.

FIG. 13 is a bottom view of FIG. 12 with the dome-shaped cover removed.

FIG. 14 is a top view of FIG.

FIG. 15 is a partially cutaway side view for explaining a camera temporary fixing mechanism of the ceiling embedded device.

FIG. 16 is a bottom view of FIG. 14;

FIG. 17 is a right side view of FIG.

FIG. 18 is a bottom view of the sealing cover.

FIG. 19 is a top view of FIG. 18;

FIG. 20 is a cross-sectional side view illustrating an engagement portion between the sealing cover and the cylindrical main body.

FIG. 21 is a perspective view illustrating a ceiling fixing part and a scale.

FIG. 22 is a partially cutaway side view for explaining the start of the work of attaching the ceiling-embedded device to the ceiling.

FIG. 23 is a partially cut-away side view for explaining the end of the work of attaching the ceiling-embedded device to the ceiling.

FIG. 24 is a perspective view from below illustrating the mounting of the dome type video camera in the ceiling embedded device.

FIG. 25 is a perspective view from below illustrating the mounting of the sealing cover after the dome type video camera has been mounted in the ceiling embedded device.

FIG. 26 is a partially cutaway side view illustrating another example of the camera temporary fixing device of the ceiling embedded device.

FIG. 27 is a perspective view illustrating a state where the dome-shaped cover is covered with a protective film.

FIG. 28 is a view for explaining how to remove a protective film when attaching and detaching the dome type cover to and from the dome type video camera device.

FIG. 29 is an overall perspective view illustrating a basic structure of a dome type video camera device.

FIG. 30 is an exploded perspective view showing the dome-shaped video camera device, in which the dome-shaped cover is disassembled from the cylindrical main body.

FIG. 31 is a front view when the dome type video camera device is attached to a ceiling or the like.

FIG. 32 is a right side view of the dome type video camera device.

FIG. 33 is a left side view of the dome video camera device.

FIG. 34 is a rear view of the dome type video camera device.

FIG. 35 is a bottom view of the same dome type video camera device with the dome type cover removed.

FIG. 36 is a top view of the dome video camera device.

FIG. 37 is a longitudinal sectional side view of the dome type video camera device of the above.

FIG. 38 is an enlarged cross-sectional view taken along the line AA of FIG. 41 for explaining a universal joint mechanism (ball joint mechanism) in the dome type video camera device.

FIG. 39 is an enlarged cross-sectional view of the dome-type video camera device of the above, taken along line BB of FIG. 41, illustrating a universal joint mechanism (ball joint mechanism).

FIG. 40 is a front view and a side view for explaining a lens barrel portion of the optical block in the dome type video camera device.

FIG. 41 is a front view and a side view for explaining a spherical portion of an optical block in the dome type video camera device.

FIG. 42 is an enlarged cross-sectional view taken along a line CC of FIG. 41 and a cross-sectional view taken along a line DD of FIG. 41, illustrating a structure of a cutout portion for inserting a signal cable of an auto iris motor in the dome type video camera device of the above. It is.

FIG. 43 is a longitudinal sectional side view of a cylindrical main body in the dome video camera device of the above.

FIG. 44 is a front view illustrating the front side of the cylindrical main body of the above, as viewed in the direction of arrows EE in FIG. 43.

FIG. 45 is a rear view of the cylindrical main body of FIG. 43 taken along line FF of FIG. 43, with the chassis lid removed.

FIG. 46 is a cross-sectional side view of the inside of the cylindrical main body, as viewed in the direction of arrows GG in FIG. 44.

FIG. 47 is a cross-sectional side view of the inside of the cylindrical main body, as viewed in the direction of arrows HH in FIG. 44.

FIG. 48 is a partially cutaway front view for explaining a mounting portion of the dome type cover to the cylindrical main body in the dome type video camera device of the above.

FIG. 49 is a front view for explaining a stopper of a fastening ring in the dome type video camera device of the above.

FIG. 50 is a partially cutaway side view illustrating the stopper of the above.

FIG. 51 is a front view illustrating a modified example of the stopper.

FIG. 52 is a sectional view taken along line II of FIG.
It is sectional side view in the arrow direction.

FIG. 53 is a partially cutaway side view illustrating a state in which a portable monitor television is connected to a monitor output terminal of the above dome-type video camera device using an L-type plug.

FIG. 54 is a partially cutaway side view illustrating a state in which a portable monitor television is connected to a monitor output terminal of the dome type video camera device using a straight plug.

FIG. 55 is a side view for explaining a basic structure of a dome-shaped cover in the dome-shaped video camera device of the above.

FIG. 56 is a top view illustrating the basic structure of the dome-shaped cover of the above.

FIG. 57 is a cross-sectional side view taken along the line JJ of FIG. 56 for explaining a basic structure of the above dome-shaped cover.

FIG. 58 is a longitudinal sectional side view for explaining the injection molding apparatus having the basic structure of the dome-shaped cover of the above.

FIG. 59 is a top view of the above injection molding apparatus.

FIG. 60 is a perspective view for explaining the degassing action during the injection molding of the basic structure of the dome cover by the injection molding apparatus.

FIG. 61 is a perspective view illustrating a gas burning phenomenon that occurs during injection molding of a dome-shaped cover by a general injection molding apparatus.

FIG. 62 is a cross-sectional side view illustrating a ceiling embedded device of a conventional dome type video camera device.

FIG. 63 is a top view of FIG. 62.

FIG. 64 is a cross-sectional view in two directions illustrating a fixing portion of the conventional dome type video camera device to the ceiling of the ceiling embedded device.

[Explanation of symbols]

1 is a dome type video camera device, 2 is a cylindrical main body, 3 is an optical block, 4 is a universal joint mechanism, 5 is a dome type cover, 501 is a light transmitting area of the dome type cover, and 502 is a light transmitting area of the dome type cover. Impossible area, 503
Is a light blocking member, and 504 is a positioning means.

Claims (4)

[Claims] 1. A cylindrical main body, an optical block that is adjustable to the cylindrical main body within a predetermined angle in a tilt direction, and is mounted to be rotatable 360 ° in a pan direction. A dome-shaped cover that is rotatable 360 ° in the direction and is detachably attached to cover the outer periphery of the movable area of the optical block, and the dome-shaped cover corresponds to an angle adjustment area of the optical block in the tilt direction. A dome-shaped video camera device, wherein the portion is configured as a light-transmitting area, and another area of the dome-shaped cover is configured as a light-impermeable area. 2. A cylindrical main body, an optical block which is adjustable to the cylindrical main body within a predetermined angle in a tilt direction, and is attached to the cylindrical main body so as to be rotatable 360 ° in a pan direction. A dome-shaped cover that is rotatable 360 ° in the direction and that is detachably attached and covers an outer periphery of a movable area of the optical block, wherein the dome-shaped cover is formed of a member that can transmit light; A dome-type video camera device, characterized in that other areas of the dome-shaped cover are painted in a light-impermeable state, except for a portion corresponding to a tilt angle adjustment area of the optical block in the mold cover. 3. A cylindrical main body, an optical block that is adjustable to the cylindrical main body within a predetermined angle in a tilt direction, and is mounted to be rotatable 360 ° in a pan direction. A dome-shaped cover that is rotatable 360 ° in the direction and that is detachably attached and covers the outer periphery of the movable area of the optical block, wherein the dome-shaped cover is formed of a member that can transmit light; A light blocking member, which is formed of a transparent member and is attached to the inner or outer peripheral surface of the dome-shaped cover, is provided. A dome-shaped video camera device, wherein a notch or a hole is formed. 4. A cylindrical main body, an optical block that is adjustable to the cylindrical main body within a predetermined angle in a tilt direction, and is mounted so as to be rotatable 360 ° in a pan direction. A dome-shaped cover that is rotatable 360 ° in the direction and is detachably attached to cover the outer periphery of the movable area of the optical block, and the dome-shaped cover corresponds to an angle adjustment area of the optical block in the tilt direction. The part is configured as a light transmitting area, the other area of the dome type cover is configured as a light non-transmitting area, and the dome type cover can be positioned with respect to the cylindrical main body in a full rotation range of 360 °. A dome-type video camera device comprising positioning means.