JP2000165711A - Dome type video camera device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To preliminarily prevent the generation of the adhesion of fingerprints or dusts or cracks on the surface of a dome type cover. SOLUTION: The surface of a dome type cover 5 of a dome type video camera device 1 is covered with a protecting film 241 constituted of a non- dopant polyethylene film. At that time, the surface of the central part of the dome type cover 5 is covered with the central part of the protecting film 241, and the outer peripheral part of the protecting film 241 is superimposed from the opening edge of the dome type cover 5 to the inside.

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 video camera devices.

[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
Conventionally, as shown in FIGS. 52 to 55, this type of dome type video camera device 301 has a cylindrical main body 302 and an optical block 303 which is 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 rotated in the loosening direction with 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 fixing screws 320 are rotated in the direction of tightening with 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]

Therefore, when the dome type video camera device 301 is embedded in the ceiling 341, the dome type cover 304 needs to be attached to and detached from the cylindrical main body 302. In any scene from the manufacturing process to the camera assembly to the camera transport to the camera installation, there is a possibility that fingerprints on the surface of the dome-shaped cover 304, adhesion of dust and dust, and scratches may occur. And this kind of dome type video camera device 301
Is a dome-shaped cover 304
If fingerprints, dirt or dust adheres to the surface of the dome-shaped cover 304, or if scratches or the like occur on the surface of the dome-shaped cover 304, the image quality of the image captured by the optical block 303 is significantly reduced. Become.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and is capable of preventing the occurrence of fingerprints, dirt, dust, and scratches on the surface of a dome-shaped cover. Things.

[0007]

According to the present invention, there is provided a dome-type video camera apparatus in which a protective film is covered on a surface of a dome-type cover.

In the dome-shaped video camera device of the present invention having the above-mentioned configuration, if the protective film covers the surface of the dome-shaped cover immediately after the formation of the dome-shaped cover, the manufacturing process of the dome-shaped cover can be reduced. In any case from camera assembly to camera transport to camera installation, it is possible to prevent fingerprints, dust and dust from adhering to the surface of the dome-shaped cover, and to prevent the surface from being damaged.

[0009]

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) ・ ・ ・ Overview of dome type video camera device (2) ・ ・ ・ Description of cylindrical main body (3) ・ ・ ・ Description of optical block (4) ・ ・ ・ Description of universal joint mechanism (5) ・・ ・ Explanation of the dome type cover (6) ・ ・ ・ Explanation of the stopper for mounting the universal joint mechanism (7) ・ ・ ・ Explanation of the work of mounting the dome type video camera device and how to use the monitor output terminal at that time (8) ) Explanation of the dome-shaped cover molding device (9) ・ ・ ・ Explanation of the application example of the video camera device (10) ··· Explanation of the ceiling embedded device (11) ··· Explanation of the protective film of the dome-shaped cover

(1) General Description of Dome-Type Video Camera Device First, an outline of the dome-type video camera device will be described with reference to FIGS. 18 to 26. , A cylindrical main body 2 and an optical block 3 attached to a front side inside the cylindrical main body 2.
Universal joint mechanism 4 having a single structure that supports the rotation of the cylindrical body 3 in three axial directions, and a front surface 2 of the cylindrical main body 2.
a is provided with a dome-shaped cover 5 detachably attached to a.

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 turning motion (head swing motion) in the Y and Z directions. In particular, the maximum rotation angle θ 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 set to a very large angle range of 72 °. The rotation center O of the universal joint mechanism 4
Is disposed on the center of the inner spherical surface 5a of the dome-shaped cover 5, so that when the optical block 3 is rotationally adjusted in three axial directions, the lens 301 at the tip of the optical block 3 and the inner spherical surface 5a of the dome-shaped cover 5 Is maintained constant, and distortion of a captured image due to a change in the gap G can be prevented.

(2) Description of the cylindrical main body Next, the cylindrical main body 2 will be described with reference to FIGS. 18, 24 to 26 and 32 to 37.
Are a cylindrical case 21, a main chassis 22 which is a chassis incorporated in the cylindrical case 21, a front cover 23, and a chassis lid plate 24 which is a rear chassis.
And two circuit boards including a signal processing board 25 and a power supply board 26 each formed of a double-sided board. The cylindrical case 21 is formed of a molded component (molded product such as ABS resin) into a cylindrical shape, and a front side opening 21a and a back side (ceiling side) opening 21b are formed at both ends in the axial direction. I have. 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 is formed by dividing a central ring-shaped portion 51 into three equal parts around the center 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 connection 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. 18 and 26 to 31. A plurality of optical blocks 3 are provided inside a tip 71a of a lens barrel 71 formed of a molded part. 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. 26 to 31. 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.

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 arrow b, which is the front side, so that the spherical surface 91a on the outer periphery of the spherical portion 91 is formed.
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 X direction is the pan direction, the arrow Y direction is the tilt direction, and the arrow Z
The direction is the turning direction. When the angle of the lens barrel 71 is adjusted in the arrow X direction, the lens barrel 71 is
5 is inserted into the notch 94, so that the adjustment angle θ of the lens barrel 71 in the direction of the arrow X can be realized as large as 72 °.

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 is And two connectors 1 mounted at the center of the cylindrical base 92 and disposed at the center of the cylindrical base 92.
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.

Then, as shown in FIGS. 27 to 30, 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 is 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 set screws 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 coupling surface between the base end 71b and the lens holder 101 is formed at a right angle to the optical axis F, and the base end 71b and the lens holder 101 are to be 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 FIG. 28, FIG. 30, and FIG. 31, a signal cable 8 pulled out 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 direction 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 Dome Cover Next, the dome cover 5 will be described with reference to FIGS. 44 to 46. The dome cover 5 is a light-transmitting molded part (injection of acrylic resin). And a 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. 44 is configured as the optically effective portion 5f.

The reason why the dome-shaped cover 5 is injection-molded with an acrylic resin is that the acrylic resin has a light refractive index of 1.5, which is close to an optical lens, and a high light transmittance of 90% or more. No. 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. However, since the dome-type video camera device 1 is used for surveillance purposes without aiming to intimidate and as little as possible to notice the surveillance,
It is desirable that the inner optical block 3 is finished to be translucent so as to be inconspicuous. Therefore, in general, when this dome-shaped cover 5 is injection-molded with an acrylic resin, a carbon material is mixed and a smoke finish is often performed to adjust the light transmittance. There is a so-called half-mirror finish, which is an anti-reflection coating for coating the surface of the outer spherical surface 5b of the dome-shaped cover 5 with a metal powder such as aluminum, in which case the light transmittance, light reflectance and Generally, the light absorptivity is finished to about 33%. And
The antireflection coating made of metal powder also serves as an antistatic coating, and can prevent dust from being attached due to electrostatic charging. 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.

By the way, in order to detachably attach the dome-shaped cover 5 to the front surface 2a of the cylindrical main body 2, FIG.
As shown in FIGS. 46 to 46, three projections 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 projections 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 FIGS. 33, 35 and 37, the cylindrical case 2
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. 26, 38 and 39. 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. 27 and 28, 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 thereby form the spherical portion 91 of the lens barrel 71. 38, the stopper 131 is pushed by a screwdriver or the like to resist the frictional force of the spring washer 132, and the arrow is turned 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 driver or the like to around the set screw 133 against the frictional force of the spring washer 132.
8, the rotation is returned in the direction of arrow f to the position shown by the solid line,
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. 40 and 41 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 this 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 FIG. 40 and FIG. 41, it rotates in the direction of the arrow e and escapes. 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 indicated 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. 18 and 24 to 26, a front cover 23 formed in a disk shape with a molded part (molded article 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 cylinders 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) Installation work of the dome type video camera device 1 on the ceiling and the like, and explanation of how to use the monitor output terminal at this time. Here, the dome type video camera device 1 is mounted on the ceiling 14 and the like. The method will be described. First, the packaging of the dome type video camera device 1 is unpacked, and the dome type cover 5 is attached 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. 43, when the tubular main body 2 is installed below the ceiling surface, the monitor output terminal 9 is disposed below the ceiling 14 or the like. 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 Dome-Shaped Cover Molding Apparatus Next, the injection molding apparatus 151 made of acrylic resin for the dome-shaped cover 5 will be described with reference to FIGS. 47 to 50. A molding die of the side gate system is used, and a mold on the mold side (fixed die) 1
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 set to the inner spherical surface 5a and the outer spherical surface 5b of the dome-shaped cover 5 described with reference to FIGS. 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. Accordingly, the parting surface side 154c of the dome-shaped cavity 154 is configured with a narrow gap, and the central (apex) side 154d is configured 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 filling the molten resin MP into the dome-shaped cavity 154, the gate is hard to be solidified. Therefore, while applying sufficient pressure from the side gate 156 to the dome-shaped cavity 154, the molten resin in the dome-shaped cavity 154 is removed. 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. 50 (A) to 50 (D) are drawings explaining gas burning defects which are likely to occur during the injection molding of the dome type cover 5, and flow into the dome type capacity 154 from the side gate 156. 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. 50 (A) to 50 (C), after the molten resin MP flowing on both sides along the parting surface 155 reaches the side gate facing position 162 and fuses first, the central part is melted. The molten resin MP that has bypassed the side 154d reaches the side gate facing position 162 and is about to be fused, as shown in FIG. 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 Application Example of Video Camera Device Next, with reference to FIG. 51, an application example of the video camera device will be described. Spherical portion 91 at base end 71b of 71
Is formed, and the CCD unit 74 is housed in the spherical portion 91. Therefore, as shown in FIG. 34, the optical block 3 is mounted on the body 172 of a video camera device 171 such as a digital video camera or a videophone. A portion 91 is attached so as to be rotatable and adjustable in three axial directions of arrows X, Y and X, so that the lens barrel 71 can be freely oriented in the three axial directions. As shown, it is possible to realize a convenient video camera device 171 in which the lens barrel 71 can be compactly folded and stored in the body 172.

(10) Description of Ceiling Embedding Device Next, the ceiling embedding device 181 will be described with reference to FIGS. 1 to 15. The ceiling embedding device 181 is pressed by sheet metal and has a horizontal camera. The attachment part 182 is 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 a guide plate 192 vertically arranged in each notch 185 and a press working perpendicularly outward from the lower end of the guide plate 192. 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. 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. Then, at a 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 21 are formed.
A semi-spherical convex portion 213 into which a groove 211 is detachably engaged as shown in FIG. 4 or a semi-spherical concave portion into which a rib 212 is detachably engaged as shown in FIG. 214
Are formed. The groove 2 is formed on the outer periphery of the cylindrical case 21.
When 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 rib 11 is formed.

The camera mounting portion 182 is provided at 180 ° intervals opposed to 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, and the inner diameter of the circular center hole 232a of the sealing cover 231 is formed. Is approximately 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. 19, 20, and 26,
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, and 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. 11, 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. 11, a pair of left and right ceiling fixing portions 191 is slid by a pair of left and right sliding mechanisms 186 in the direction of arrow g, which is an inner side 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. 11, the camera mounting portion 182 of the ceiling embedded device 181 is inserted upward into the camera mounting hole 15 in the direction of the 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. 12, a pair of left and right ceiling fixing portions 191 is slid by a pair of left and right slide mechanisms 186 in a direction of 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. 5, the positioning marks 203 formed on the lower surfaces of the pair of left and right lower holding plates 193 are replaced with the positioning marks formed on the lower surfaces of the lower ends 184a of the pair of left and right brackets 184. By matching to 204
The sandwiching amount W31 of the ceiling 14 between the pair of left and right sandwiching plates 193 and 195 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. 13, the dome-shaped cover 5 of the dome-shaped video camera device 1 is detached 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 the four camera insertion guides 206 of the ceiling embedded device 181. Insert Then, as shown in FIG. 4, 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 circumference of the cylindrical main body 2 is temporarily closed. The projection mechanism 213 of the four leaf springs 210 of the stop 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 in total. 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. At this time, as shown in FIG. 15, 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. The dome-type video camera device 1 can also be temporarily fixed to the ceiling embedded device 181 in such a manner as to be combined.

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. .

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.

Then, after the dome type video camera device 1 is embedded in the ceiling 14 in this manner, as described above, the azimuth (photographing direction and photographing angle) of the optical block 3
To adjust. Then, FIG. 1, FIG. 2 and FIG.
As shown in FIG.
The cover mounting portion 31 is inserted into the outer periphery of the cover mounting portion 31 of the cylindrical main body 2 by 31 a, and a total of four leaf springs 234 are locked to the upper end 31 a of the cover mounting portion 31. In between, the sealing cover 231 can be detachably attached so as to sandwich the sealing cover 231 without backlash against a total of four leaf springs 210. 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. 7 and 14, 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 connected to the cylinder. The sealing body 231 is fitted into the notch 232 of the cover attaching portion 31 of the mold body 2 to position the sealing cover 231 relative to the cylindrical body 2 in the circumferential direction. As a result, the cylindrical body 2 embedded in the ceiling 14 despite the camera mounting hole 15 of the ceiling 14 and the ceiling embedding device 181 being covered from below by the sealing cover 231 at the outer peripheral position of the cylindrical body 2. The sound generated at a position below the ceiling cover 231, that is, a position below the ceiling 14 can be collected by the sound collecting microphone 6 through the sound collecting hole 35 and the notch 232. In addition,
As described above, the work of inserting the L-shaped plug 141 of the monitor output cable 142 or the like into the monitor output terminal 9 of the tubular main body 2 and checking the captured image with the portable monitor television 143 is performed by attaching the sealing cover 231 to the tubular main body. This is performed before attaching to the outer periphery of No. 2. Then, as shown in FIG. 1 and FIG.
Is inserted into the inside of the cover attaching portion 31 of the tubular main body 2 from below and is detachably attached as described above, whereby a series of ceiling embedding operations can be completed.

In the ceiling mounting device 181, three sets of screw holes 221 and
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.

(11) Description of Protective Film for Dome Cover Next, as shown in FIGS. 16 and 17, 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. 16A, 16B and 16C, 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 241 a of the protective film 241. With the center portion 5d placed, 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. 17A, 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. 17A, 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.
17B, the cylindrical 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 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. 17 (C), after inserting the dome-shaped cover 5 into the inside of the cover attaching portion 31 of the cylindrical main body 2 in the direction of the arrow a with the right hand, the arrow is turned clockwise. By rotating in the direction c, the opening end 5c 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.

If the entire surface of the dome-shaped cover 5 is covered with the protective film 241 and shipped from the factory as described above, fingerprints (oils such as fatty acids), dirt and dust 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.

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.

[0074]

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

The first aspect of the present invention is to cover the surface of the dome-shaped cover with a protective film immediately after the formation of the dome-shaped cover. In this case, it is possible to prevent fingerprints, dirt and dust from adhering to the surface of the dome-shaped cover, and to prevent the image from being damaged. Image quality can be remarkably improved, and a high-quality dome type video camera device can be installed.

According to a second aspect of the present invention, when the surface of the dome-shaped cover is covered with the protective film, the central portion of the protective film covers the central portion of the dome-shaped cover from the outside, and the outer peripheral portion of the protective film is covered with the dome-shaped cover. Since the dome-shaped video camera device is installed on the ceiling when the dome-shaped cover is attached to and detached from the cylindrical main body, fingerprints and the like are attached to the surface of the dome-shaped cover. Without removing the protective film from the dome cover, the dome cover can be easily attached and detached.

According to a third aspect of the present invention, since the protective film is formed of an unadded polyethylene film, the protective film has good adhesion to the surface of the dome-shaped cover, and the protective film can be removed from the dome-shaped cover without using an adhesive or the like. Since it is difficult to peel off, the work of attaching and detaching the dome-shaped cover to and from the cylindrical main body can be easily performed.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view for explaining an embodiment of a ceiling embedded device of a dome type video camera device to which the present invention is applied.

FIG. 2 is a bottom view of FIG. 1 with a dome-shaped cover removed.

FIG. 3 is a top view of FIG. 1;

FIG. 4 is a partially cutaway side view for explaining a camera temporary fixing mechanism of the ceiling embedded device.

FIG. 5 is a bottom view of FIG. 3;

FIG. 6 is a side view taken along the line NN of FIG. 3;

FIG. 7 is a bottom view of the sealing cover.

FIG. 8 is a top view of FIG. 7;

FIG. 9 is a cross-sectional side view illustrating an engagement portion between the sealing cover and the cylindrical main body.

FIG. 10 is a perspective view illustrating a ceiling fixing part and a scale.

FIG. 11 is a partially cutaway side view for explaining the start of the work of attaching the ceiling-embedded device to the ceiling.

FIG. 12 is a partially cutaway side view for explaining the end of the work of attaching the ceiling-embedded device to the ceiling.

FIG. 13 is a perspective view from below illustrating the mounting of the dome type video camera in the ceiling embedded device.

FIG. 14 is a perspective view seen from below illustrating the mounting of the sealing cover after the dome type video camera is mounted in the ceiling embedded device.

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

FIG. 16 is a perspective view illustrating a state in which a dome-shaped cover is covered with a protective film.

FIG. 17 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. 18 is an overall perspective view illustrating a dome type video camera device.

FIG. 19 is an exploded perspective view of the dome-type video camera device of the above, in which a dome-type cover is disassembled from a cylindrical main body.

FIG. 20 is a front view when the dome type video camera device is attached to a ceiling or the like.

FIG. 21 is a right side view of the dome type video camera device.

FIG. 22 is a left side view of the dome type video camera device.

FIG. 23 is a rear view of the dome type video camera device.

FIG. 24 is a bottom view of the same dome type video camera device with the dome type cover removed.

FIG. 25 is a top view of the dome video camera device.

FIG. 26 is a vertical sectional side view of the dome-type video camera device.

FIG. 27 is an enlarged sectional view, taken along the line AA of FIG. 30, for explaining a universal joint mechanism (ball joint mechanism) in the dome-type video camera device of the above.

FIG. 28 is an enlarged cross-sectional view taken along the line BB of FIG. 30 for explaining a universal joint mechanism (ball joint mechanism) in the dome type video camera device of the above.

FIG. 29 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 of the above.

FIG. 30 is a front view and a side view illustrating a spherical portion of an optical block in the dome type video camera device of the above.

FIG. 31 is an enlarged cross-sectional view taken along a line CC and a cross-sectional view taken along a line DD of FIG. 30, illustrating a structure of a cut-out portion for inserting a signal cable of an auto iris motor in the dome type video camera device of the above. It is.

FIG. 32 is a longitudinal sectional side view of a cylindrical main body in the dome type video camera device of the above.

FIG. 33 is a front view showing the front side of the cylindrical main body, as viewed from the direction of arrows EE in FIG. 32;

FIG. 34 is a rear view of the same cylindrical main body taken along line FF of FIG. 32, illustrating a rear surface side of the cylindrical main body, with the chassis cover plate removed.

FIG. 35 is a cross-sectional side view of the inside of the cylindrical main body, as viewed in the direction of arrows GG in FIG. 33;

FIG. 36 is a cross-sectional side view of the same tubular main body taken along the line HH of FIG. 33;

FIG. 37 is a partially cutaway front view for explaining an attachment portion of the dome-shaped cover to the cylindrical main body in the dome-shaped video camera device of the above.

FIG. 38 is a front view for explaining a stopper of a fastening ring in the dome type video camera device.

FIG. 39 is a partially cutaway side view for explaining the stopper of the above.

FIG. 40 is a front view illustrating a modified example of the stopper.

FIG. 41 is a sectional view taken along line II of FIG. 40 for explaining the stopper according to the second embodiment;
It is sectional side view in the arrow direction.

FIG. 42 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 an L-type plug.

FIG. 43 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. 44 is a side view illustrating a dome-shaped cover in the dome-shaped video camera device of the above.

FIG. 45 is a top view illustrating the dome-shaped cover of the above.

FIG. 46 is a view J of FIG.
It is sectional side view in the -J arrow view.

FIG. 47 is a longitudinal sectional side view for explaining the injection molding apparatus for the dome-shaped cover of the above.

FIG. 48 is a top view of the above injection molding apparatus.

FIG. 49 is a perspective view for explaining the degassing operation during injection molding of the dome-shaped cover by the above injection molding apparatus.

FIG. 50 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. 51 is a perspective view illustrating an application example of the video camera device.

FIG. 52 is a cross-sectional side view illustrating a ceiling embedded device of a conventional dome type video camera device.

FIG. 53 is a top view of FIG. 52.

FIG. 54 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, 5 is a dome type cover, 5a is an inner spherical surface (front surface) of the dome type cover, 5b is an outer spherical surface (rear surface) of the dome type cover, 5c Is the open end of the dome-shaped cover, 5d is the center of the dome-shaped cover, 241 is a protective film, 241
a is the central part of the protective film, and 241b is the outer peripheral part of the protective film.

Claims (3)

[Claims] A cylindrical body; an optical block attached to a front surface of the cylindrical body so as to be adjustable in angle; A dome-shaped video camera device, comprising: a dome-shaped cover that covers the dome-shaped cover; and a protective film that covers the surface of the dome-shaped cover. 2. A cylindrical main body, an optical block mounted on the front surface of the cylindrical main body so as to be adjustable in angle, and an outer periphery of a movable area of the optical block detachably mounted on the front surface of the cylindrical main body. A dome-shaped cover that covers the center of the surface of the dome-shaped cover from the outside at the center, and a protective film whose outer periphery is folded inside the opening end of the dome-shaped cover. Dome type video camera device. 3. The dome type video camera device according to claim 1, wherein said protective film is made of a non-added polyethylene film.