KR200342138Y1 - Dome type camera - Google Patents

Abstract

The present invention relates to a dome-type infrared surveillance camera which eliminates virtual image shooting due to diffuse reflection, and arranges a plurality of infrared LEDs around the front of the camera module fixed to the bracket and covered with a transparent dome-shaped cover such as glass or plastic, and the front of the camera module. The inner wall made of EVA and the outer wall made of EVA and EPDM are doubled between the camera module and the transparent dome-shaped cover while covering the camera lens exposed to the center, and the infrared rays irradiated from the infrared LEDs placed around the front of the camera module Since the reflection of the transparent material prevents the reflection from being incident again into the camera lens, the image of the infrared LED is not formed by the diffuse reflection at night when the infrared photography is used, so that only the subject in front of the image can be taken.

Description

Dome-type infrared surveillance camera eliminates virtual images caused by diffuse reflection {Dome type camera}

The present invention relates to a dome-type infrared surveillance camera which eliminates virtual image shooting due to diffuse reflection. More specifically, the infrared LED is diffused by a dome-shaped cover and the infrared ray incident on the camera lens is blocked by an opaque blocking wall such as EVA or EPDM. The present invention relates to a dome-type infrared surveillance camera which eliminates virtual image shooting due to diffuse reflection, which prevents infrared LEDs from being photographed in a subject image due to the diffuse reflection of infrared rays emitted from the image.

In general, surveillance cameras are installed in offices, houses, hospitals, banks and public buildings that require security, and are widely used for access control and crime prevention. Many roads and residential areas where accidents occur frequently are installed.

Most surveillance cameras are installed in spaces such as walls and ceilings that are out of reach of people. In addition, apart from surveillance cameras designed to capture only one direction, a dome-type surveillance camera has been introduced that can arbitrarily adjust the shooting direction regardless of the installation location or space. In addition to controlling the direction in which the surveillance camera can shoot, it is also possible to shoot at night or in the basement without light (visible light) by applying infrared light.

However, unlike a surveillance camera having a flat front surface, in the case of a surveillance camera having a front (cover) shape, infrared rays are diffused by the cover and are incident through the camera lens instead of irradiating only the space where the subject is located. Therefore, there is a drawback that the virtual image of the infrared LED formed by the incident infrared rays reflected on the screen captured by the surveillance camera and the image of the subject photographed normally is displayed so that the subject cannot be accurately read for monitoring.

The present invention for solving the above-described drawbacks is equipped with an infrared LED to irradiate the infrared to irradiate the infrared light in place of visible light in the dark space at night or surroundings so that the other party can take a specific area (subject) without knowing It is an object of the present invention to provide a dome-type infrared surveillance camera which eliminates virtual images caused by diffuse reflection.

In addition, the present invention establishes a blocking wall made of an opaque EVA or EPDM, and is diffusely reflected by a dome-shaped cover to block infrared rays incident on the camera lens, so that a virtual image, i.e., a virtual image is obtained due to diffuse reflection to prevent an infrared LED from being taken. Its purpose is to provide a dome-type infrared surveillance camera that eliminates the problem.

In addition, the present invention aims to provide a dome type infrared surveillance camera which eliminates virtual image shooting due to diffuse reflection to more accurately monitor a specific area (subject) to be monitored without unnecessary parts such as an infrared LED.

1 is an exploded perspective view showing a dome-type infrared surveillance camera according to the present invention.

2 is an exploded perspective view showing the main part of FIG.

Figure 3 is a cross-sectional view for explaining the blocking of the virtual image (infrared LED) due to the diffuse reflection in the present invention.

-Explanation of symbols for the main parts of the drawings-

10: base 11: bottom

12: screw hole 13: screw rod

14: insertion hole 15: circular fastening protrusion

16: round side wall 20: bracket

21: fixture 22: the first coupling piece

23: first connection portion 24: fixing groove

25: second connection portion 26: the second coupling piece

27: fastening hole 28: fastening screw

29: bottom surface 30: camera module

31: camera lens 32: fixed panel

33: through hole 34: infrared LED

35: blocking wall 36: inner wall

37: outer wall 38: sponge layer

40: cover 41: inside

42,45: flange 43: aiming area

44: coupling member 46: fastening groove

50: coupling hole 51: support

The dome-type infrared surveillance camera which eliminates the virtual image shooting due to the diffuse reflection according to the present invention for achieving the above object, is installed on the bottom of the base so that the camera module is directed in a specific direction in combination with the bracket, the bracket and the camera A dome-type infrared surveillance camera having a transparent dome-shaped cover coupled downwardly to the base while surrounding the module, wherein a through-hole for exposing the camera lens is formed in the center thereof, and one side thereof contacts the front surface of the camera module, and the through-hole is the camera. A fixed panel fixed to an end of two or more supports coupled to the coupling hole of the bracket so as to be in front of the lens; a plurality of infrared LEDs fixedly disposed in a circular shape on the front of the fixed panel at a predetermined distance from the through hole; The space between the through hole of the fixed panel and the infrared LED fixedly disposed on the fixed panel It characterized in that it comprises a blocking wall of the opaque cylindrical shape having a predetermined height in the front of the fixed panel.

In addition, in the dome-type infrared surveillance camera eliminated the virtual image due to the diffuse reflection according to the present invention, the blocking wall is a cylindrical inner wall attached to the front surface of the fixing panel to be in close contact with the inner surface of the cover, and close to the inner surface of the cover It is preferable that the inner wall is made of a cylindrical outer wall attached to the front surface of the fixing panel so as to surround the inner wall, and a sponge layer of a material compressed by the pressure of opening and closing the cover is formed at a predetermined height at an end of the outer wall.

In addition, in the dome-type infrared surveillance camera eliminated the virtual image due to the diffuse reflection according to the present invention, the inner wall and the outer wall of the blocking wall is preferably made of EVA (Ethylene-Vinyl Acetate copolymer).

In addition, in the dome-type infrared surveillance camera eliminated the virtual image due to the diffuse reflection according to the present invention, it is preferable that the sponge layer of the outer wall of the blocking wall is made of EPDM (Ethylene Propylene Rubber).

Hereinafter, the present invention will be described in detail.

Referring to FIG. 1, the infrared surveillance camera according to the present invention has a ring shape for fixing a cover 40 and a cover 40 made of an opaque material having a dome shape except for a part (aimation area 43). The member 44, the circular base 10 coupled to the cover 40, the camera module 30, the bracket 20 for fixing the camera module 30 and the fixing panel 32, the incident of the diffused infrared And a fixing panel 32 for fixing the blocking wall 35 for blocking.

More specifically, the dome-shaped cover 40 having an annular first flange 42 protruding radially outward from the bottom of the dome-shaped cover 40 has a transparent aiming area 43 at a portion of the circumference. Have This aiming area 43 has a function of an aiming window for aiming the camera lens 31 of the camera module 30 to be surrounded by the cover 40 to a desired surveillance area. In particular, the remaining portion of the cover 40 except for the aiming area 43 uses an opaque color or an opaque material so that the surveillance camera is not exposed.

The engaging member 44 for fixing the cover 40 to the base 10 has an annular flange 45 extending radially inward. The flange 44 serves as a locking jaw to fix the flange 42 of the dome-shaped cover 40 when the dome-shaped cover 40 is placed into the coupling member 44. On the inner circumferential surface of the coupling member 44, a plurality of circular fastening grooves 46 for coupling with the base 10 are formed.

The bottom surface 11 of the circular base 10 is formed with a plurality of fixing grooves (not shown) for attaching the circular base 10 to the ceiling of the desired monitoring area. In addition, the bottom surface 11 of the circular base 10 has an insertion hole 14 for inserting a plurality of wires (not shown) for electrical connection with the camera module 30 passes through the bottom surface 11. In addition, a plurality of electrical contacts (not shown) are formed. In addition, the bottom surface 11 of the circular base 10 has a plurality of screw rods 13 for fixing the bracket 20 on the circular base 10. At the top of the screw rod 13, nuts and Has a screw hole 12 for coupling.

On the other hand, a circular side wall 16 protrudes upward from the bottom surface 11 on the outer circumferential surface of the circular base 10, and on the outer surface of the side wall 16, engagement with the fastening groove 46 of the coupling member 44 is achieved. A plurality of circular fastening protrusions 15 are formed. The fastening protrusion 15 of the base 10 and the fastening groove 46 of the coupling member 44 may be formed of a screw thread that can be screwed together.

In addition, the bracket 20 for fixing the camera module 30 on the circular base 10 so as to direct the surveillance zone is rotatably coupled to the first coupling piece 22 and the second coupling piece 26. Is done.

Here, a fastener 21 for fixing the camera module 30 is formed in the center of the first coupling piece 22, the first coupling piece 22 is a plurality of vertically extending first connection portion 23 The first connection portion 23 has a first fastening hole (not shown), respectively. In addition, the second coupling piece 26 has a plurality of vertically extending second connection portion 25, the second connection portion 25 is formed with a second fastening hole 27, respectively.

In addition, the first coupling piece 22 and the second coupling piece 26 are fastened to each other by a fastening screw 28 passing through the first fastening hole and the second fastening hole 27, which are not shown. The fastening screw 28 is slidable up and down along the second fastening hole 27 in a state in which the first coupling piece 22 and the second coupling piece 26 are coupled to each other. Therefore, when adjusting the photographing angle of the camera module 30, the first coupling piece 22 may be inclined at a predetermined angle with the fastening screw 28 as the central axis.

Meanwhile, a plurality of fixing grooves 24 are formed on the bottom surface 29 of the bracket 20, so that the bracket 20 passes through the fixing groove 24 formed through the bottom surface 29 of the bracket 20. It is mounted on the circular base 10 fixed to the ceiling or the like by a fixing screw inserted into the screw hole 12 formed in the screw rod 13.

FIG. 2 is a diagram showing a configuration for blocking the diffused infrared rays mounted in front of the bracket 20 from being incident on the camera module 30 through the camera lens 31, and exposing the camera lens 31 to the center. Through hole 33 is formed for the coupling of the bracket 20 so that one side of the front of the camera module 30, that is, the bracket 20 and the through hole 33 is in front of the camera lens 31 The fixing panel 32 is fixedly installed at the end of the two or more supports 51 through the ball 50.

Here, although not shown in detail in the drawing, the camera module 30 may be selectively used as a camera (high spec) consisting of two boards (board) and a camera consisting of one board (product to increase the price competitiveness), etc. have.

The camera module consisting of two boards of the above camera module 30 exchanges signals and the like, and connects two short 7 mm supports to firmly couple the two boards. In addition, the camera module 30 and the bracket 20 are firmly coupled by three or more 10 mm supports (not shown), so there is no left and right shake despite external shocks. The fixing panel 32 on which the bracket 20 and the infrared LED 34 are mounted is fixed by three or more 29 mm supports 51. Therefore, the fixing panel 32 maintains the horizontal state even when the cover 40 is covered and does not shake despite the external impact.

As shown above, each support 51 for fixing the camera module 30 and the fixing panel 32 to the bracket 20 can be combined with each other without a separate nut, and can be combined with the camera module or the fixing panel 32. When using three nuts, the movement of the support can be eliminated.

In the front of the fixing panel 32, a plurality of infrared ray LEDs 34 are fixedly arranged in a circle at a predetermined interval from the central through hole 33. In addition, the space between the through hole 33 of the fixed panel 32 and the infrared LED 34 fixedly disposed in the fixed panel 32, that is, the front wall of the fixed panel 32 has a certain height and is a barrier wall made of an opaque material. 35 is attached.

The blocking wall 34 has a cylindrical shape attached to the front surface of the fixing panel 32 so as to be in close contact with the inner surface 41 of the cover 40 as shown in FIG. 3 when the cover 40 is covered by the base 10. It consists of a cylindrical outer wall 37 attached to the front of the fixing panel 32 while wrapping the inner wall 36 to be in close contact with the inner wall 36 of the inner wall 36 and the cover 40. Of course, it is preferable to make the thickness of the outer wall 37 thicker than the inner wall 36 to block the incidence of infrared rays.

At this time, a part (top) of the outer wall 37 is made of a sponge layer 38 made of a material having excellent compressibility, and when the cover 40 is coupled to the base 10, the inner surface 41 of the cover 40 is sponged. Since the layer 38 is compressed, the sponge layer 38 adheres to the inner surface 41 of the cover 40 so that infrared rays diffused by the cover 40 are not incident into the camera module 30 through the camera lens 31. Do not.

As the inner wall 36 and the outer wall 37 of the blocking wall 35, a sponge formed of an opaque material such as ethylene-vinyl acetate copolymer (EVA) may be used, and the sponge of the outer wall 37 of the blocking wall 35 may be used. The layer 38 may be a sponge formed of an opaque material such as EPDM (Ethylene Propylene Rubber).

Therefore, according to the domed infrared surveillance camera eliminated the virtual image due to the diffuse reflection according to the present invention;

1. The present invention is equipped with an infrared LED to irradiate infrared light in the night or the surroundings in the dark space instead of visible light to irradiate the specific area (subject) can be photographed without knowing the other party.

2. The present invention establishes a blocking wall made of an opaque material such as EVA or EPDM to diffuse the reflection by the dome-shaped cover to block the infrared light incident on the camera lens, thereby preventing the virtual image, that is, the infrared LED from being photographed.

3. The present invention can more accurately monitor the specific area (subject) to be monitored without unnecessary parts such as infrared LED.

Although the present invention has been described in detail only with respect to the specific embodiments described, it will be apparent to those skilled in the art that various modifications and variations are possible within the technical spirit of the present invention, and such modifications and modifications belong to the appended claims of utility model registration. It is natural.

Claims (4)

In the dome-type infrared surveillance camera that the camera module is installed on the bottom of the base to face in a specific direction by coupling with the bracket, the dome-shaped cover of the transparent material is coupled downwardly to the base while surrounding the bracket and the camera module, Fixing panel fixed to the end of two or more supports coupled to the coupling hole of the bracket so that a through hole for exposing the camera lens is formed in the center and one side touches the front of the camera module and the through hole is in front of the camera lens. ; A plurality of infrared LEDs fixedly disposed in front of the fixing panel at a predetermined distance from the through hole; And An opaque cylindrical barrier wall having a predetermined height attached to the front surface of the fixing panel along a space between the through hole of the fixing panel and the infrared LED fixedly disposed on the fixing panel; Dome-type infrared surveillance camera eliminated virtual images due to diffuse reflection, comprising a. The method of claim 1, The blocking wall is a cylindrical inner wall attached to the front surface of the fixing panel to be in close contact with the inner surface of the cover, and a cylindrical outer wall attached to the front surface of the fixing panel while surrounding the inner wall to be in close contact with the inner surface of the cover. And a sponge layer made of a material compressed by a pressure of opening and closing the cover at an end portion of the outer wall, wherein the domed infrared surveillance camera eliminates the virtual image photographing caused by the diffuse reflection. The method according to claim 1 or 2, The inner wall and the outer wall of the blocking wall is EVA (Ethylene-Vinyl Acetate copolymer) characterized in that the domed infrared surveillance camera eliminated the virtual image due to the diffuse reflection. The method according to claim 1 or 2, The domed infrared surveillance camera eliminated the virtual image due to the diffuse reflection, characterized in that the sponge layer of the outer wall of the blocking wall is made of ethylene propylene rubber (EPDM).