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WO2012064040A2 - Power supply device for a closed-circuit tv camera - Google Patents

Power supply device for a closed-circuit tv camera Download PDF

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Publication number
WO2012064040A2
WO2012064040A2 PCT/KR2011/008159 KR2011008159W WO2012064040A2 WO 2012064040 A2 WO2012064040 A2 WO 2012064040A2 KR 2011008159 W KR2011008159 W KR 2011008159W WO 2012064040 A2 WO2012064040 A2 WO 2012064040A2
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smps
power supply
housing
individual
boards
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PCT/KR2011/008159
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French (fr)
Korean (ko)
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WO2012064040A3 (en
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권태현
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R25/00—Coupling parts adapted for simultaneous co-operation with two or more identical counterparts, e.g. for distributing energy to two or more circuits
    • H01R25/16—Rails or bus-bars provided with a plurality of discrete connecting locations for counterparts
    • H01R25/164—Connecting locations formed by flush mounted apparatus

Definitions

  • the present invention relates to a power supply for a closed circuit television camera. More specifically, the present invention relates to a power supply for a closed circuit television camera that can improve the stability of the power supply and the convenience of maintenance work.
  • a CCTV (Closed Circuit Television) system transmits image information captured by a camera to a specific number of recipients instead of an unspecified number of recipients, and the information desired by a certain number of users through the transmitted image information. It is a system that displays images so that you can acquire and observe the area you want to monitor according to the purpose.
  • Such CCTV systems are used for a wide variety of applications, such as for security surveillance, industrial, video surveillance of vehicles or traffic management. Accordingly, the development of CCTV with excellent characteristics and price competitiveness is required.
  • the CCTV system requires a large number of CCTV cameras to capture the surveillance area, and a stable power supply to these cameras can be an indicator for evaluating the performance of the CCTV system.
  • FIG. 1 is a view showing a conventional closed circuit television (CCTV) power supply method.
  • An object of the present invention is to provide a power supply device for a closed circuit television camera capable of supplying power to a plurality of cameras with one power supply device.
  • the present invention provides a power supply device for a closed-circuit television camera that can maintain a power supply state by automatically switching to a reserve channel even if any one channel is broken by using multiple power supply channels. It is a task.
  • the present invention is for a closed-circuit television camera that can be configured to detach the individual SMPS boards constituting the multiple power supply channel in a sliding manner, and to visually display the operating state of the individual SMPS boards, thereby improving maintenance work. It is a technical problem to provide a power supply.
  • the present invention is to provide a power supply device for a closed-circuit television camera that can protect the internal device from surge current, lightning, and the like.
  • the closed-circuit television camera power supply device for solving this problem is a housing, multiple for supplying a plurality of closed-circuit television cameras by converting the commercial AC power is mounted on the housing into a DC drive power A switching mode power supply (SMPS) unit of a power supply channel structure and a control unit for controlling the operation of the SMPS unit, wherein the SMPS unit is composed of a larger number of individual SMPS boards than the number of the multiple power supply channels;
  • the controller may control power supply to be maintained through the spare SMPS board when one of the individual SMPS boards fails.
  • the individual SMPS boards are removably mounted to the housing in a sliding manner through the front portion of the housing.
  • the individual SMPS board is a printed circuit board and a printed circuit board having a groove formed on a front surface of the individual SMPS board to be pulled out by the sliding method, one end of which is fixed to the sliding body, and on which elements for performing an SMPS function are mounted. It is formed on the other end of the substrate, characterized in that it comprises an SMPS connector for electrical connection with the connector provided in the housing.
  • the front surface of the sliding body constituting the individual SMPS board is characterized in that the LED display for visually displaying the operating state of the individual SMPS board is provided.
  • an over-current blocking circuit unit is installed between the AC power input terminal to which the commercial AC power is input and the SMPS unit to block the over-current flowing from the outside.
  • the apparatus may further include a plurality of AC power output terminals connected to the overcurrent blocking circuit unit.
  • a power supply device for a closed circuit television camera that can supply power to a plurality of cameras with one power supply device is provided.
  • a power supply device for a closed-circuit television camera that can maintain a power supply state for all surveillance cameras by automatically switching to a reserve channel even when any one channel fails by using multiple power supply channels is provided. It works.
  • the power supply device for closed circuit television cameras can be improved by detachably configuring the individual SMPS boards constituting the multiple power supply channels in a sliding manner and visually displaying the operating status of the individual SMPS boards. There is an effect provided.
  • FIG. 1 is a view showing a conventional closed circuit television camera power supply method.
  • FIG. 2 is a block diagram of a power supply device for a closed circuit television camera according to an embodiment of the present invention.
  • FIG 3 is an external perspective view of a power supply for a closed circuit television camera according to an embodiment of the present invention.
  • FIG. 4 is an internal perspective view of a power supply for a closed circuit television camera according to an embodiment of the present invention.
  • FIG. 5 is a view showing an individual SMPS board included in a power supply for a closed circuit television camera according to an embodiment of the present invention.
  • FIG. 6 is a diagram illustrating an example in which an individual SMPS board is mounted to a housing in a sliding manner.
  • FIG. 7 is a view showing a front shape of a housing provided with a protective cover in an embodiment of the present invention.
  • FIG. 8 is a front view of a power supply device for a closed circuit television camera according to an embodiment of the present invention.
  • FIG. 9 is a rear view of a power supply for a closed circuit television camera according to an embodiment of the present invention.
  • FIG. 2 is a block diagram of a power supply for a closed circuit television (CCTV) camera according to an embodiment of the present invention
  • Figure 3 is a power supply device for a closed circuit television camera according to an embodiment of the present invention
  • 4 is an external perspective view of a power supply device for a closed circuit television camera according to an embodiment of the present invention.
  • the closed circuit television camera power supply 1 includes a housing 10, a switching mode power supply (SMPS) unit 20, and a controller 30. , An overcurrent blocking circuit unit 40 and a plurality of AC power output terminals 50.
  • SMPS switching mode power supply
  • the housing 10 is a frame for accommodating and structurally supporting the components constituting the closed circuit television camera power supply 1 according to an embodiment of the present invention.
  • the SMPS unit 20 is mounted to the housing 10 in a sliding manner, and converts the commercial AC power into DC driving power to supply the plurality of closed circuit television cameras.
  • the SMPS unit 20 has a multiple power supply channel structure.
  • the multi-power supply channel structure is defined as a structure for supplying DC driving power through independent channels for all closed circuit television cameras connected to the power supply 1.
  • the number of multiple power supply channels is equal to the number of closed circuit television cameras connected to the power supply 1.
  • the SMPS unit 20 is configured with a larger number of individual SMPS boards than the number of multiple power supply channels, and the controller 30 to be described below is powered through a spare SMPS board when one of the individual SMPS boards fails. Control the supply to be maintained. For example, if the number of closed-circuit television cameras connected to the power supply 1 is 16, the SMPS unit 20 is composed of 17 individual SMPS boards, and multiple power supplies are provided from 16 individual SMPS boards. Implementing a channel and supplying power, if one of them fails, supplies power through the other spare SMPS board, so that even if one of the individual SMPS boards fails, the 16 closed circuit television cameras Can maintain the power supply.
  • These individual SMPS boards are detachably mounted to the housing 10 in a sliding manner through the front portion of the housing 10.
  • FIG 5 is a view showing an individual SMPS board included in a power supply for a closed circuit television camera according to an embodiment of the present invention
  • Figure 6 is an embodiment of the present invention, the individual SMPS board in a sliding manner housing It is a figure which shows the example attached to (10).
  • the individual SMPS board includes a sliding body 22, a printed circuit board 24, and an SMPS connector 26.
  • the sliding body 22 is a portion to which the printed circuit board 24 to be described later is mounted and fixed.
  • a groove 21 is formed on the front surface of the sliding body 22, and an LED display unit 28 is provided below the groove 21.
  • the groove 21 formed on the front surface of the sliding body 22 is a means for the user to insert a finger to slide out the individual SMPS board in a sliding manner.
  • the LED display unit 28 is a means for visually displaying the operating state of the individual SMPS board, it may be composed of two green and red LEDs.
  • the controller 30 1) when the individual SMPS board does not operate, that is, when the function of the preliminary SMPS board, both LEDs are controlled to turn off, and 2) when the individual SMPS board operates normally , Green LED can be controlled. 3) If individual SMPS board doesn't operate due to fault, it can be controlled to turn on Red LED. Through this, a user such as a maintenance worker can visually check the status of individual SMPS boards, thereby improving convenience of maintenance work.
  • the printed circuit board 24 On the printed circuit board 24, elements for performing an SMPS function are mounted. One end of the printed circuit board 24 is fixed while being electrically connected to the sliding body 22.
  • the SMPS connector 26 is formed at the other end of the printed circuit board 24 and is a means for electrical connection with the connector provided in the housing 10.
  • control unit 30 is a means for controlling the operation of the SMPS unit 20 and the LED display unit 28, as described above, the control unit 30, if one of the individual SMPS boards fail, a spare SMPS board It performs the function of controlling to maintain the power supply. More specifically, for example, the number of closed circuit television cameras connected to the power supply 1 is 16, the number of SMPS boards is 17, and 16 individual SMPS boards are implemented to implement 16 multiple power supply channels. In case of power supply, if one of the 16 individual SMPS boards fails, power is supplied through the other spare SMPS board, so that even if any of the individual SMPS boards fails, By controlling the number to maintain 16, it is possible to maintain power supply for the 16 closed circuit television cameras.
  • the overcurrent blocking circuit unit 40 is installed between the AC power input terminal to which commercial AC power is input and the SMPS unit 20.
  • the overcurrent blocking circuit unit 40 is a means for protecting internal devices by blocking overcurrent flowing from the outside such as lightning and surge current. .
  • the plurality of AC power output terminals are connected to the overcurrent blocking circuit unit 40, and are terminals for outputting commercial AC power input through the AC power input terminal while preventing overcurrent.
  • these terminals can be used as terminals for supplying power to digital video recorders (DVRs), monitors, and the like.
  • DVRs digital video recorders
  • the protective cover 60 is installed on the front portion of the housing 10 and has a transparent material having high light transmittance.
  • the protective cover 60 is provided with locking means for preventing unauthorized withdrawal to the individual SMPS boards.
  • FIG. 7 is a view showing the front shape of the housing 10 provided with the protective cover 60 in one embodiment of the present invention.
  • a protective cover 60 having a transparent material is provided on the front surface of the housing 10, and the protective cover 60 is provided with a locking means 62.
  • the operator can prevent the withdrawal of the individual SMPS boards on the front of the housing 10 by setting the locking means 62 to the locked state after covering the front of the housing 10 with this protective cover 60.
  • FIG. 8 is a front view of a power supply device for a closed circuit television camera according to an embodiment of the present invention.
  • the operator visually views the operating state of the individual SMPS boards through the LED display 28 provided on the front of the housing 10, more specifically, in front of the sliding body 22 constituting the individual SMPS boards. You can check with
  • FIG. 9 is a rear view of a power supply for a closed circuit television camera according to an embodiment of the present invention.
  • an AC power input terminal, a DC driving power output terminal, and an AC power output terminal are provided on the rear surface of the housing 10. Since the DC drive power can be supplied to the plurality of cameras through the DC drive power output terminal, the convenience of wiring work is improved.
  • the power supply device for closed circuit television cameras can be improved by detachably configuring the individual SMPS boards constituting the multiple power supply channels in a sliding manner and visually displaying the operating status of the individual SMPS boards. There is an effect provided.
  • the present invention has the effect that the power supply for the closed-circuit TV camera that can protect the internal device from surge current, lightning, and the like.

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Abstract

The present invention relates to a power supply device for a closed-circuit TV camera. The device of the present invention includes: a housing; a switching mode power supply (SMPS) unit, which has a structure consisting of multiple power supply channels, which is mounted on the housing, and which converts inputted commercial AC power into DC drive power and supplies the converted DC drive power to a plurality of closed-circuit TV cameras; and a control unit for controlling the operation of the SMPS unit. The SMPS unit includes separate SMPS boards, wherein there are more SMPS boards than there are power supply channels, and the control unit functions so as to enable a preliminary SMPS board to maintain the power supply when one of the separate SMPS boards breaks down. According to the present invention, by using multiple power supply channels for a plurality of cameras with one power supply device, even when one channel breaks down, the power supply state may be maintained by means of the automatic switch from a channel to a preliminary channel. Since separate SMPS boards constituting multiple power supply channels are slidably detachable, maintenance may be improved.

Description

폐쇄회로텔레비젼 카메라용 전원공급장치Power Supply for Closed Circuit Television Camera

본 발명은 폐쇄회로텔레비젼 카메라용 전원공급장치에 관한 것이다. 보다 구체적으로, 본 발명은 전원공급의 안정성 및 유지보수 작업의 편의성을 향상시킬 수 있는 폐쇄회로텔레비젼 카메라용 전원공급장치에 관한 것이다.The present invention relates to a power supply for a closed circuit television camera. More specifically, the present invention relates to a power supply for a closed circuit television camera that can improve the stability of the power supply and the convenience of maintenance work.

일반적으로 CCTV(Closed Circuit Television) 시스템이란 카메라에서 촬영된 영상정보를 불특정 다수의 수신자가 아닌 특정 소수의 수신자를 대상으로 영상정보를 전송하고, 그 전송된 영상정보를 통해서 특정 소수의 사용자가 원하는 정보를 획득하고 용도에 따라 감시하고자 하는 지역을 관찰할 수 있도록 영상으로 디스플레이하는 시스템을 말한다.In general, a CCTV (Closed Circuit Television) system transmits image information captured by a camera to a specific number of recipients instead of an unspecified number of recipients, and the information desired by a certain number of users through the transmitted image information. It is a system that displays images so that you can acquire and observe the area you want to monitor according to the purpose.

이와 같은 CCTV 시스템은 보안 감시용, 산업용, 차량의 화상감시용 또는 교통관리용 등의 다양하고 광범위한 용도로 사용되고 있다. 이에 따라 우수한 특성과 가격 경쟁력을 갖는 CCTV의 개발이 요구되고 있다.Such CCTV systems are used for a wide variety of applications, such as for security surveillance, industrial, video surveillance of vehicles or traffic management. Accordingly, the development of CCTV with excellent characteristics and price competitiveness is required.

이러한 CCTV 시스템에는 감시 영역을 촬영하기 위하여 많은 수의 CCTV 카메라가 필요하며, 이들 카메라들에 대한 안정적인 전원 공급이 CCTV 시스템의 성능을 평가하는 하나의 지표가 될 수 있다.The CCTV system requires a large number of CCTV cameras to capture the surveillance area, and a stable power supply to these cameras can be an indicator for evaluating the performance of the CCTV system.

도 1은 종래의 폐쇄회로텔레비젼(Closed Circuit Television, CCTV) 카메라 전원공급방식을 나타낸 도면이다.1 is a view showing a conventional closed circuit television (CCTV) power supply method.

도 1을 참조하면, 종래에는 시스템에 포함된 개별 카메라들마다 개별 전원 어댑터를 연결하여 전원을 공급하는 방식이 이용되었다.Referring to FIG. 1, conventionally, a method of supplying power by connecting individual power adapters to individual cameras included in a system has been used.

그러나 이 방식에 따르면, 전원 어댑터가 고장나는 경우 이 전원 어댑터에 연결된 카메라를 동작시킬 수 없기 때문에, 이 카메라가 설치된 영역에 대한 영상정보가 누락되어 CCTV 시스템의 품질이 저하되는 문제점이 있었다.However, according to this method, when the power adapter is broken, the camera connected to the power adapter cannot be operated, and thus there is a problem that the quality of the CCTV system is deteriorated due to missing image information on the area where the camera is installed.

또한, 카메라의 수에 대응하는 수의 전원 어댑터가 필요하고, 이 전원 어댑터에 대한 개별적인 유지보수 작업이 이루어져야 하기 때문에, CCTV 시스템의 구축비용이 상승하고 유지보수 작업의 편의성이 저하되는 문제점이 있었다.In addition, since a number of power adapters corresponding to the number of cameras is required and individual maintenance work on the power adapter is required, the cost of constructing a CCTV system increases and the convenience of maintenance work is deteriorated.

본 발명은 하나의 전원공급장치로 복수의 카메라에 전원을 공급할 수 있는 폐쇄회로텔레비젼 카메라용 전원공급장치를 제공하는 것을 기술적 과제로 한다.An object of the present invention is to provide a power supply device for a closed circuit television camera capable of supplying power to a plurality of cameras with one power supply device.

또한, 본 발명은 다중 전원공급채널을 이용하여 어느 하나의 채널이 고장나는 경우에도 예비 채널로의 채널 자동 전환을 통하여 전원 공급 상태를 유지할 수 있는 폐쇄회로텔레비젼 카메라용 전원공급장치를 제공하는 것을 기술적 과제로 한다.In addition, the present invention provides a power supply device for a closed-circuit television camera that can maintain a power supply state by automatically switching to a reserve channel even if any one channel is broken by using multiple power supply channels. It is a task.

또한, 본 발명은 다중 전원공급채널을 구성하는 개별 SMPS 보드들을 슬라이딩 방식으로 착탈 가능하게 구성하고, 개별 SMPS 보드들의 동작 상태를 시각적으로 표시함으로써, 유지보수 작업을 향상시킬 수 있는 폐쇄회로텔레비젼 카메라용 전원공급장치를 제공하는 것을 기술적 과제로 한다.In addition, the present invention is for a closed-circuit television camera that can be configured to detach the individual SMPS boards constituting the multiple power supply channel in a sliding manner, and to visually display the operating state of the individual SMPS boards, thereby improving maintenance work. It is a technical problem to provide a power supply.

또한, 본 발명은 서지전류 및 낙뢰 등으로부터 내부 장치를 보호할 수 있는 폐쇄회로텔레비젼 카메라용 전원공급장치를 제공하는 것을 기술적 과제로 한다.In addition, the present invention is to provide a power supply device for a closed-circuit television camera that can protect the internal device from surge current, lightning, and the like.

이러한 과제를 해결하기 위한 본 발명에 따른 폐쇄회로텔레비젼 카메라용 전원공급장치는 하우징, 상기 하우징에 장착되며 입력되는 상용 교류전원을 직류 구동전원으로 변환하여 복수의 폐쇄회로텔레비젼 카메라들로 공급하기 위한 다중 전원공급채널 구조의 SMPS(Switching Mode Power Supply) 부 및 상기 SMPS 부의 동작을 제어하기 위한 제어부를 포함하여 구성되고, 상기 SMPS 부는 상기 다중 전원공급채널의 수보다 많은 수의 개별 SMPS 보드들로 이루어지고, 상기 제어부는 상기 개별 SMPS 보드들 중 하나가 고장나는 경우 예비 SMPS 보드를 통하여 전원 공급이 유지되도록 제어하는 것을 특징으로 한다.The closed-circuit television camera power supply device according to the present invention for solving this problem is a housing, multiple for supplying a plurality of closed-circuit television cameras by converting the commercial AC power is mounted on the housing into a DC drive power A switching mode power supply (SMPS) unit of a power supply channel structure and a control unit for controlling the operation of the SMPS unit, wherein the SMPS unit is composed of a larger number of individual SMPS boards than the number of the multiple power supply channels; The controller may control power supply to be maintained through the spare SMPS board when one of the individual SMPS boards fails.

상기 개별 SMPS 보드들은 상기 하우징의 전면부를 통하여 슬라이딩 방식으로 상기 하우징에 착탈 가능하게 장착되는 것을 특징으로 한다.The individual SMPS boards are removably mounted to the housing in a sliding manner through the front portion of the housing.

상기 개별 SMPS 보드는 상기 개별 SMPS 보드를 슬라이딩 방식으로 빼내기 위한 홈이 앞면에 형성된 슬라이딩 몸체, 일단이 상기 슬라이딩 몸체에 고정되어 있으며 SMPS 기능을 수행하기 위한 소자들이 실장되어 있는 인쇄회로기판 및 상기 인쇄회로기판의 타단에 형성되어 있으며 상기 하우징에 구비된 커넥터와의 전기적인 연결을 위한 SMPS 커넥터를 포함하는 것을 특징으로 한다.The individual SMPS board is a printed circuit board and a printed circuit board having a groove formed on a front surface of the individual SMPS board to be pulled out by the sliding method, one end of which is fixed to the sliding body, and on which elements for performing an SMPS function are mounted. It is formed on the other end of the substrate, characterized in that it comprises an SMPS connector for electrical connection with the connector provided in the housing.

상기 개별 SMPS 보드를 구성하는 슬라이딩 몸체의 앞면에는 상기 개별 SMPS 보드의 동작 상태를 시각적으로 표시하기 위한 LED 표시부가 구비되어 있는 것을 특징으로 한다.The front surface of the sliding body constituting the individual SMPS board is characterized in that the LED display for visually displaying the operating state of the individual SMPS board is provided.

상기 하우징의 전면부에 설치된 투명 재질의 보호 덮개를 더 포함하고, 상기 보호 덮개에는 잠금 수단이 구비되어 있는 것을 특징으로 한다.It further comprises a protective cover of a transparent material installed on the front portion of the housing, characterized in that the protective cover is provided with a locking means.

상기 상용 교류전원이 입력되는 교류전원 입력단자와 상기 SMPS 부 사이에 설치되어 외부로부터 유입되는 과전류를 차단하기 위한 과전류 차단회로부를 더 포함하는 것을 특징으로 한다.It is characterized in that it further comprises an over-current blocking circuit unit is installed between the AC power input terminal to which the commercial AC power is input and the SMPS unit to block the over-current flowing from the outside.

상기 과전류 차단회로부에 연결된 복수의 교류전원 출력 단자들을 더 포함하는 것을 특징으로 한다.The apparatus may further include a plurality of AC power output terminals connected to the overcurrent blocking circuit unit.

본 발명에 따르면, 하나의 전원공급장치로 복수의 카메라에 전원을 공급할 수 있는 폐쇄회로텔레비젼 카메라용 전원공급장치가 제공되는 효과가 있다.According to the present invention, there is an effect that a power supply device for a closed circuit television camera that can supply power to a plurality of cameras with one power supply device is provided.

또한, 다중 전원공급채널을 이용하여 어느 하나의 채널이 고장나는 경우에도 예비 채널로의 채널 자동 전환을 통하여 모든 감시 카메라에 대하여 전원 공급 상태를 유지할 수 있는 폐쇄회로텔레비젼 카메라용 전원공급장치가 제공되는 효과가 있다.In addition, a power supply device for a closed-circuit television camera that can maintain a power supply state for all surveillance cameras by automatically switching to a reserve channel even when any one channel fails by using multiple power supply channels is provided. It works.

또한, 다중 전원공급채널을 구성하는 개별 SMPS 보드들을 슬라이딩 방식으로 착탈 가능하게 구성하고, 개별 SMPS 보드들의 동작 상태를 시각적으로 표시함으로써, 유지보수 작업을 향상시킬 수 있는 폐쇄회로텔레비젼 카메라용 전원공급장치가 제공되는 효과가 있다.In addition, the power supply device for closed circuit television cameras can be improved by detachably configuring the individual SMPS boards constituting the multiple power supply channels in a sliding manner and visually displaying the operating status of the individual SMPS boards. There is an effect provided.

또한, 서지전류 및 낙뢰 등으로부터 내부 장치를 보호할 수 있는 폐쇄회로텔레비젼 카메라용 전원공급장치가 제공되는 효과가 있다.In addition, there is an effect that a power supply for a closed-circuit television camera that can protect the internal device from surge current, lightning and the like is provided.

도 1은 종래의 폐쇄회로텔레비젼 카메라 전원공급방식을 나타낸 도면이다.1 is a view showing a conventional closed circuit television camera power supply method.

도 2는 본 발명의 일 실시 예에 따른 폐쇄회로텔레비젼 카메라용 전원공급장치의 블록도이다.2 is a block diagram of a power supply device for a closed circuit television camera according to an embodiment of the present invention.

도 3은 본 발명의 일 실시 예에 따른 폐쇄회로텔레비젼 카메라용 전원공급장치의 외부 사시도이다.3 is an external perspective view of a power supply for a closed circuit television camera according to an embodiment of the present invention.

도 4는 본 발명의 일 실시 예에 따른 폐쇄회로텔레비젼 카메라용 전원공급장치의 내부 사시도이다.4 is an internal perspective view of a power supply for a closed circuit television camera according to an embodiment of the present invention.

도 5는 본 발명의 일 실시 예에 따른 폐쇄회로텔레비젼 카메라용 전원공급장치에 포함된 개별 SMPS 보드를 나타낸 도면이다.5 is a view showing an individual SMPS board included in a power supply for a closed circuit television camera according to an embodiment of the present invention.

도 6은 본 발명의 일 실시 예에 있어서, 개별 SMPS 보드가 슬라이딩 방식으로 하우징에 장착되는 예를 나타낸 도면이다.6 is a diagram illustrating an example in which an individual SMPS board is mounted to a housing in a sliding manner.

도 7은 본 발명의 일 실시 예에 있어서, 보호 덮개가 구비된 하우징의 전면 형상을 나타낸 도면이다.7 is a view showing a front shape of a housing provided with a protective cover in an embodiment of the present invention.

도 8은 본 발명의 일 실시 예에 따른 폐쇄회로텔레비젼 카메라용 전원공급장치의 정면도이다.8 is a front view of a power supply device for a closed circuit television camera according to an embodiment of the present invention.

도 9는 본 발명의 일 실시 예에 따른 폐쇄회로텔레비젼 카메라용 전원공급장치의 배면도이다.9 is a rear view of a power supply for a closed circuit television camera according to an embodiment of the present invention.

*** 도면 부호의 설명 ****** Explanation of Reference Symbols ***

1: 전원공급장치1: power supply

10: 하우징10: housing

20: SMPS 부20: SMPS Division

21: 홈21: home

22: 슬라이딩 몸체22: sliding body

24: 인쇄회로기판24: printed circuit board

26: SMPS 커넥터26: SMPS connector

28: LED 표시부28: LED display

30: 제어부30: control unit

40: 과전류 차단회로부40: overcurrent blocking circuit

50: 교류전원 출력단자들50: AC power output terminal

60: 보호 덮개60: protective cover

62: 잠금 수단62: locking means

이하에서는 첨부된 도면을 참조하여 본 발명의 바람직한 실시 예를 상세히 설명한다.Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the present invention;

도 2는 본 발명의 일 실시 예에 따른 폐쇄회로텔레비젼(Closed Circuit Television, CCTV) 카메라용 전원공급장치의 블록도이고, 도 3은 본 발명의 일 실시 예에 따른 폐쇄회로텔레비젼 카메라용 전원공급장치의 외부 사시도이고, 도 4는 본 발명의 일 실시 예에 따른 폐쇄회로텔레비젼 카메라용 전원공급장치의 내부 사시도이다.2 is a block diagram of a power supply for a closed circuit television (CCTV) camera according to an embodiment of the present invention, Figure 3 is a power supply device for a closed circuit television camera according to an embodiment of the present invention 4 is an external perspective view of a power supply device for a closed circuit television camera according to an embodiment of the present invention.

도 2 내지 도 4를 참조하면, 본 발명의 일 실시 예에 따른 폐쇄회로텔레비젼 카메라용 전원공급장치(1)는 하우징(10), SMPS(Switching Mode Power Supply) 부(20), 제어부(30), 과전류 차단회로부(40) 및 복수의 교류전원 출력단자들(50)을 포함하여 구성된다.2 to 4, the closed circuit television camera power supply 1 according to an embodiment of the present invention includes a housing 10, a switching mode power supply (SMPS) unit 20, and a controller 30. , An overcurrent blocking circuit unit 40 and a plurality of AC power output terminals 50.

하우징(10)은 본 발명의 일 실시 예에 따른 폐쇄회로텔레비젼 카메라용 전원공급장치(1)를 구성하는 구성 요소들을 수납하고 구조적으로 지지하기 위한 프레임이다.The housing 10 is a frame for accommodating and structurally supporting the components constituting the closed circuit television camera power supply 1 according to an embodiment of the present invention.

SMPS 부(20)는 하우징(10)에 슬라이딩 방식으로 장착되며, 입력되는 상용 교류전원을 직류 구동전원으로 변환하여 복수의 폐쇄회로텔레비젼 카메라들로 공급하기 위한 기능을 수행한다.The SMPS unit 20 is mounted to the housing 10 in a sliding manner, and converts the commercial AC power into DC driving power to supply the plurality of closed circuit television cameras.

또한 SMPS 부(20)는 다중 전원공급채널 구조를 갖는다. 본 실시 예에 있어서, 다중 전원공급채널 구조는 전원공급장치(1)에 연결된 모든 폐쇄회로텔레비젼 카메라들마다 독립적인 채널을 통하여 직류 구동전원을 공급하는 구조로 정의한다. 다중 전원공급채널의 수는 전원공급장치(1)에 연결된 폐쇄회로텔레비젼 카메라의 수와 같다.In addition, the SMPS unit 20 has a multiple power supply channel structure. In the present embodiment, the multi-power supply channel structure is defined as a structure for supplying DC driving power through independent channels for all closed circuit television cameras connected to the power supply 1. The number of multiple power supply channels is equal to the number of closed circuit television cameras connected to the power supply 1.

이를 위하여, SMPS 부(20)를 다중 전원공급채널의 수보다 많은 수의 개별 SMPS 보드들로 구성하고, 후술하는 제어부(30)는 개별 SMPS 보드들 중 하나가 고장나는 경우 예비 SMPS 보드를 통하여 전원 공급이 유지되도록 제어한다. 예를 들어, 전원공급장치(1)에 연결된 폐쇄회로텔레비젼 카메라의 수가 16개인 경우, 17개의 개별 SMPS 보드들로 SMPS 부(20)를 구성하고, 이 중 16개의 개별 SMPS 보드들로 다중 전원공급채널을 구현하여 전원을 공급하다가, 이들 중 어느 하나가 고장나는 경우 나머지 하나의 예비 SMPS 보드를 통하여 전원을 공급함으로써, 개별 SMPS 보드들 중 어느 하나가 고장나는 경우에도 16개의 폐쇄회로텔레비젼 카메라들에 대한 전원 공급을 유지할 수 있다.To this end, the SMPS unit 20 is configured with a larger number of individual SMPS boards than the number of multiple power supply channels, and the controller 30 to be described below is powered through a spare SMPS board when one of the individual SMPS boards fails. Control the supply to be maintained. For example, if the number of closed-circuit television cameras connected to the power supply 1 is 16, the SMPS unit 20 is composed of 17 individual SMPS boards, and multiple power supplies are provided from 16 individual SMPS boards. Implementing a channel and supplying power, if one of them fails, supplies power through the other spare SMPS board, so that even if one of the individual SMPS boards fails, the 16 closed circuit television cameras Can maintain the power supply.

이러한 개별 SMPS 보드들은 하우징(10)의 전면부를 통하여 슬라이딩 방식으로 하우징(10)에 착탈 가능하게 장착된다.These individual SMPS boards are detachably mounted to the housing 10 in a sliding manner through the front portion of the housing 10.

이를 도 5와 도 6을 참조하여 보다 구체적으로 설명한다.This will be described in more detail with reference to FIGS. 5 and 6.

도 5는 본 발명의 일 실시 예에 따른 폐쇄회로텔레비젼 카메라용 전원공급장치에 포함된 개별 SMPS 보드를 나타낸 도면이고, 도 6은 본 발명의 일 실시 예에 있어서, 개별 SMPS 보드가 슬라이딩 방식으로 하우징(10)에 장착되는 예를 나타낸 도면이다.5 is a view showing an individual SMPS board included in a power supply for a closed circuit television camera according to an embodiment of the present invention, Figure 6 is an embodiment of the present invention, the individual SMPS board in a sliding manner housing It is a figure which shows the example attached to (10).

도 5와 도 6을 참조하면, 개별 SMPS 보드는 슬라이딩 몸체(22), 인쇄회로기판(24) 및 SMPS 커넥터(26)를 포함하여 구성된다.5 and 6, the individual SMPS board includes a sliding body 22, a printed circuit board 24, and an SMPS connector 26.

슬라이딩 몸체(22)는 후술하는 인쇄회로기판(24)이 장착되어 고정되는 부분이다. 이 슬라이딩 몸체(22)의 앞면에는 홈(21)이 형성되어 있으며, 이 홈(21)의 아래에는 LED 표시부(28)가 구비되어 있다.The sliding body 22 is a portion to which the printed circuit board 24 to be described later is mounted and fixed. A groove 21 is formed on the front surface of the sliding body 22, and an LED display unit 28 is provided below the groove 21.

슬라이딩 몸체(22)의 앞면에 형성된 홈(21)은 사용자가 손가락을 삽입하여 개별 SMPS 보드를 슬라이딩 방식으로 빼내기 위한 수단이다.The groove 21 formed on the front surface of the sliding body 22 is a means for the user to insert a finger to slide out the individual SMPS board in a sliding manner.

또한 LED 표시부(28)는 개별 SMPS 보드의 동작 상태를 시각적으로 표시하기 위한 수단이며, 녹색과 적색의 2개의 LED로 구성될 수 있다. 예를 들어, 제어부(30)는 1) 개별 SMPS 보드가 동작하지 않는 상태 즉, 예비 SMPS 보드의 기능을 하는 경우, 2개의 LED가 모두 소등되도록 제어하고, 2) 개별 SMPS 보드가 정상적으로 동작하는 경우, 녹색 LED가 점등되도록 제어하고, 3) 개별 SMPS 보드가 고장으로 인하여 동작하지 않는 경우, 적색 LED가 점등되도록 제어할 수 있다. 이를 통하여, 유지보수 작업자 등의 사용자가 개별 SMPS 보드들의 상태를 시각적으로 확인할 수 있으며, 이에 따라 유지보수 작업의 편의성이 향상된다.In addition, the LED display unit 28 is a means for visually displaying the operating state of the individual SMPS board, it may be composed of two green and red LEDs. For example, the controller 30 1) when the individual SMPS board does not operate, that is, when the function of the preliminary SMPS board, both LEDs are controlled to turn off, and 2) when the individual SMPS board operates normally , Green LED can be controlled. 3) If individual SMPS board doesn't operate due to fault, it can be controlled to turn on Red LED. Through this, a user such as a maintenance worker can visually check the status of individual SMPS boards, thereby improving convenience of maintenance work.

인쇄회로기판(24)에는 SMPS 기능을 수행하기 위한 소자들이 실장되어 있다. 이 인쇄회로기판(24)의 일단은 슬라이딩 몸체(22)에 전기적으로 연결된 상태로 고정되어 있다. On the printed circuit board 24, elements for performing an SMPS function are mounted. One end of the printed circuit board 24 is fixed while being electrically connected to the sliding body 22.

SMPS 커넥터(26)는 인쇄회로기판(24)의 타단에 형성되어 있으며, 하우징(10)에 구비된 커넥터와의 전기적인 연결을 위한 수단이다.The SMPS connector 26 is formed at the other end of the printed circuit board 24 and is a means for electrical connection with the connector provided in the housing 10.

제어부(30)는 SMPS 부(20)와 LED 표시부(28)의 동작을 제어하기 위한 수단이면, 이러한 제어부(30)는 앞서 설명한 바와 같이, 개별 SMPS 보드들 중 하나가 고장나는 경우 예비 SMPS 보드를 통하여 전원 공급이 유지되도록 제어하는 기능을 수행한다. 보다 구체적으로, 예를 들어, 전원공급장치(1)에 연결된 폐쇄회로텔레비젼 카메라의 수가 16개이고, SMPS 보드들의 수가 17개이고, 이 중 16개의 개별 SMPS 보드들로 16개의 다중 전원공급채널을 구현하여 전원을 공급하는 경우, 16개의 개별 SMPS 보드들 중 어느 하나가 고장나는 경우, 나머지 하나의 예비 SMPS 보드를 통하여 전원을 공급함으로써, 개별 SMPS 보드들 중 어느 하나가 고장나는 경우에도 다중 전원공급채널의 수가 16개를 유지하도록 제어함으로써, 16개의 폐쇄회로텔레비젼 카메라들에 대한 전원 공급을 유지할 수 있다.If the control unit 30 is a means for controlling the operation of the SMPS unit 20 and the LED display unit 28, as described above, the control unit 30, if one of the individual SMPS boards fail, a spare SMPS board It performs the function of controlling to maintain the power supply. More specifically, for example, the number of closed circuit television cameras connected to the power supply 1 is 16, the number of SMPS boards is 17, and 16 individual SMPS boards are implemented to implement 16 multiple power supply channels. In case of power supply, if one of the 16 individual SMPS boards fails, power is supplied through the other spare SMPS board, so that even if any of the individual SMPS boards fails, By controlling the number to maintain 16, it is possible to maintain power supply for the 16 closed circuit television cameras.

과전류 차단회로부(40)는 상용 교류전원이 입력되는 교류전원 입력단자와 SMPS 부(20) 사이에 설치되어 있으며, 낙뢰, 서지전류 등 외부로부터 유입되는 과전류를 차단하여 내부 소자들을 보호하기 위한 수단이다.The overcurrent blocking circuit unit 40 is installed between the AC power input terminal to which commercial AC power is input and the SMPS unit 20. The overcurrent blocking circuit unit 40 is a means for protecting internal devices by blocking overcurrent flowing from the outside such as lightning and surge current. .

복수의 교류전원 출력 단자들은 과전류 차단회로부(40)에 연결되어 있으며, 교류전원 입력단자를 통하여 입력되는 상용 교류전원을 과전류 유입을 방지하면서 출력하기 위한 단자들이다. 예를 들어, 이 단자들은 디지털비디오레코더(Digital Video Recorder, DVR), 모니터 등에 전원을 공급하기 위한 단자로 이용될 수 있다.The plurality of AC power output terminals are connected to the overcurrent blocking circuit unit 40, and are terminals for outputting commercial AC power input through the AC power input terminal while preventing overcurrent. For example, these terminals can be used as terminals for supplying power to digital video recorders (DVRs), monitors, and the like.

보호 덮개(60)는 하우징(10)의 전면부에 설치되어 있으며, 광투과성이 높은 투명 재질을 갖는다. 이러한 보호 덮개(60)에는 개별 SMPS 보드들에 대한 무단 인출을 방지하기 위한 잠금 수단이 구비되어 있다.The protective cover 60 is installed on the front portion of the housing 10 and has a transparent material having high light transmittance. The protective cover 60 is provided with locking means for preventing unauthorized withdrawal to the individual SMPS boards.

보다 구체적으로, 작업자가 개별 SMPS 보드들을 모두 설치한 후 보호 덮개(60)를 덮고 열쇠 등으로 잠금 수단을 잠김 상태로 설정하면, 열쇠를 소지하지 않은 무단 사용자에 의한 개별 SMPS 보드들을 무단 인출이나 훼손 등을 방지할 수 있다.More specifically, if the operator installs all the individual SMPS boards and then covers the protective cover 60 and sets the locking means to the locked state with a key or the like, unauthorized withdrawal or damage of individual SMPS boards by an unauthorized user who does not have a key. Etc. can be prevented.

이하에서는 도 7 내지 도 9를 참조하여, 본 발명의 일 실시 예에 따른 폐쇄회로텔레비젼 카메라용 전원공급장치의 외관을 설명한다.Hereinafter, the appearance of a power supply for a closed circuit television camera according to an embodiment of the present invention will be described with reference to FIGS. 7 to 9.

도 7은 본 발명의 일 실시 예에 있어서, 보호 덮개(60)가 구비된 하우징(10)의 전면 형상을 나타낸 도면이다.7 is a view showing the front shape of the housing 10 provided with the protective cover 60 in one embodiment of the present invention.

도 7을 참조하면, 하우징(10)의 전면에는 투명 재질을 갖는 보호 덮개(60)가 구비되어 있으며, 이 보호 덮개(60)에는 잠금 수단(62)이 구비되어 있다. 작업자는 이 보호 덮개(60)로 하우징(10)의 전면을 덮은 후에 잠금 수단(62)을 잠김 상태로 설정함으로써, 하우징(10) 전면의 개별 SMPS 보드들의 인출을 방지할 수 있다.Referring to FIG. 7, a protective cover 60 having a transparent material is provided on the front surface of the housing 10, and the protective cover 60 is provided with a locking means 62. The operator can prevent the withdrawal of the individual SMPS boards on the front of the housing 10 by setting the locking means 62 to the locked state after covering the front of the housing 10 with this protective cover 60.

도 8은 본 발명의 일 실시 예에 따른 폐쇄회로텔레비젼 카메라용 전원공급장치의 정면도이다.8 is a front view of a power supply device for a closed circuit television camera according to an embodiment of the present invention.

도 8을 참조하면, 작업자는 하우징(10) 전면, 보다 구체적으로는, 개별 SMPS 보드를 구성하는 슬라이딩 몸체(22)의 앞면에 구비된 LED 표시부(28)를 통하여 개별 SMPS 보드의 동작 상태를 시각적으로 확인할 수 있다.Referring to FIG. 8, the operator visually views the operating state of the individual SMPS boards through the LED display 28 provided on the front of the housing 10, more specifically, in front of the sliding body 22 constituting the individual SMPS boards. You can check with

도 9는 본 발명의 일 실시 예에 따른 폐쇄회로텔레비젼 카메라용 전원공급장치의 배면도이다.9 is a rear view of a power supply for a closed circuit television camera according to an embodiment of the present invention.

도 9를 참조하면, 하우징(10)의 배면에는 교류전원 입력단자, 직류 구동전원 출력단자 및 교류전원 출력단자가 구비되어 있다. 직류 구동전원 출력단자를 통하여 복수개의 카메라로 직류 구동전원을 공급할 수 있어서, 배선 작업의 편의성이 향상된다.9, an AC power input terminal, a DC driving power output terminal, and an AC power output terminal are provided on the rear surface of the housing 10. Since the DC drive power can be supplied to the plurality of cameras through the DC drive power output terminal, the convenience of wiring work is improved.

이상에서 상세히 설명한 바와 같이 본 발명에 따르면, 하나의 전원공급장치로 복수의 카메라에 전원을 공급할 수 있는 폐쇄회로텔레비젼 카메라용 전원공급장치가 제공되는 효과가 있다.As described in detail above, according to the present invention, there is an effect of providing a power supply for a closed circuit television camera capable of supplying power to a plurality of cameras with one power supply.

보다 구체적으로, 다중 전원공급채널을 이용하여 어느 하나의 채널이 고장나는 경우에도 예비 채널로의 채널 자동 전환을 통하여 전원 공급 상태를 유지할 수 있는 폐쇄회로텔레비젼 카메라용 전원공급장치가 제공되는 효과가 있다.More specifically, there is an effect of providing a closed circuit television camera power supply that can maintain a power supply state by automatically switching to a spare channel even when any one channel fails by using multiple power supply channels. .

또한, 다중 전원공급채널을 구성하는 개별 SMPS 보드들을 슬라이딩 방식으로 착탈 가능하게 구성하고, 개별 SMPS 보드들의 동작 상태를 시각적으로 표시함으로써, 유지보수 작업을 향상시킬 수 있는 폐쇄회로텔레비젼 카메라용 전원공급장치가 제공되는 효과가 있다.In addition, the power supply device for closed circuit television cameras can be improved by detachably configuring the individual SMPS boards constituting the multiple power supply channels in a sliding manner and visually displaying the operating status of the individual SMPS boards. There is an effect provided.

또한, 본 발명은 서지전류 및 낙뢰 등으로부터 내부 장치를 보호할 수 있는 폐쇄회로텔레비젼 카메라용 전원공급장치가 제공되는 효과가 있다.In addition, the present invention has the effect that the power supply for the closed-circuit TV camera that can protect the internal device from surge current, lightning, and the like.

이상에서 본 발명에 대한 기술 사상을 첨부 도면과 함께 서술하였지만, 이는 본 발명의 바람직한 실시예를 예시적으로 설명한 것이지 본 발명을 한정하는 것은 아니다. 또한, 이 기술 분야의 통상의 지식을 가진 자라면 누구나 본 발명의 기술 사상의 범주를 이탈하지 않는 범위 내에서 다양한 변형 및 모방이 가능함은 명백한 사실이다.Although the technical spirit of the present invention has been described above with reference to the accompanying drawings, the present invention has been described by way of example and is not intended to limit the present invention. In addition, it is obvious that any person skilled in the art can make various modifications and imitations without departing from the scope of the technical idea of the present invention.

Claims (7)

폐쇄회로텔레비젼 카메라용 전원공급장치에 있어서,In a power supply for a closed circuit television camera, 하우징;housing; 상기 하우징에 장착되며 입력되는 상용 교류전원을 직류 구동전원으로 변환하여 복수의 폐쇄회로텔레비젼 카메라들로 공급하기 위한 다중 전원공급채널 구조의 SMPS(Switching Mode Power Supply) 부; 및A Switching Mode Power Supply (SMPS) unit of a multi-supply channel structure for supplying a plurality of closed circuit television cameras by converting commercial AC power supplied to the housing into DC driving power; And 상기 SMPS 부의 동작을 제어하기 위한 제어부를 포함하고,A control unit for controlling the operation of the SMPS unit; 상기 SMPS 부는 상기 다중 전원공급채널의 수보다 많은 수의 개별 SMPS 보드들로 이루어지고,The SMPS unit is composed of a larger number of individual SMPS boards than the number of the multiple power supply channels, 상기 제어부는 상기 개별 SMPS 보드들 중 하나가 고장나는 경우 예비 SMPS 보드를 통하여 전원 공급이 유지되도록 제어하는 것을 특징으로 하는, 폐쇄회로텔레비젼 카메라용 전원공급장치.The control unit is characterized in that the power supply is maintained so that the power supply is maintained through the spare SMPS board when one of the individual SMPS boards, the closed circuit television camera power supply. 제1 항에 있어서,According to claim 1, 상기 개별 SMPS 보드들은 상기 하우징의 전면부를 통하여 슬라이딩 방식으로 상기 하우징에 착탈 가능하게 장착되는 것을 특징으로 하는, 폐쇄회로텔레비젼 카메라용 전원공급장치.And the individual SMPS boards are detachably mounted to the housing in a sliding manner through the front portion of the housing. 제1 항에 있어서,According to claim 1, 상기 개별 SMPS 보드는The individual SMPS board 상기 개별 SMPS 보드를 슬라이딩 방식으로 빼내기 위한 홈이 앞면에 형성된 슬라이딩 몸체;A sliding body having a groove formed on a front surface of the individual SMPS board in a sliding manner; 일단이 상기 슬라이딩 몸체에 고정되어 있으며 SMPS 기능을 수행하기 위한 소자들이 실장되어 있는 인쇄회로기판; 및A printed circuit board having one end fixed to the sliding body and mounted with elements for performing an SMPS function; And 상기 인쇄회로기판의 타단에 형성되어 있으며 상기 하우징에 구비된 커넥터와의 전기적인 연결을 위한 SMPS 커넥터를 포함하는 것을 특징으로 하는, 폐쇄회로텔레비젼 카메라용 전원공급장치.It is formed on the other end of the printed circuit board, characterized in that it comprises an SMPS connector for electrical connection with the connector provided in the housing, power supply for a closed circuit television camera. 제1 항에 있어서,According to claim 1, 상기 개별 SMPS 보드를 구성하는 슬라이딩 몸체의 앞면에는 상기 개별 SMPS 보드의 동작 상태를 시각적으로 표시하기 위한 LED 표시부가 구비되어 있는 것을 특징으로 하는, 폐쇄회로텔레비젼 카메라용 전원공급장치.The front surface of the sliding body constituting the individual SMPS board is provided with an LED display for visually displaying the operating state of the individual SMPS board, power supply for a closed circuit television camera. 제1 항에 있어서,According to claim 1, 상기 하우징의 전면부에 설치된 투명 재질의 보호 덮개를 더 포함하고,Further comprising a protective cover of a transparent material installed on the front portion of the housing, 상기 보호 덮개에는 잠금 수단이 구비되어 있는 것을 특징으로 하는, 폐쇄회로텔레비젼 카메라용 전원공급장치.The protective cover is provided with a locking means, characterized in that the power supply for a closed circuit television camera. 제1 항에 있어서,According to claim 1, 상기 상용 교류전원이 입력되는 교류전원 입력단자와 상기 SMPS 부 사이에 설치되어 외부로부터 유입되는 과전류를 차단하기 위한 과전류 차단회로부를 더 포함하는 것을 특징으로 하는, 폐쇄회로텔레비젼 카메라용 전원공급장치.And an overcurrent blocking circuit unit installed between the AC power input terminal to which the commercial AC power is input and the SMPS unit to block an overcurrent flowing from the outside. 제6 항에 있어서,The method of claim 6, 상기 과전류 차단회로부에 연결된 복수의 교류전원 출력 단자들을 더 포함하는 것을 특징으로 하는, 폐쇄회로텔레비젼 카메라용 전원공급장치.And a plurality of AC power output terminals connected to the overcurrent blocking circuit unit.
PCT/KR2011/008159 2010-11-10 2011-10-28 Power supply device for a closed-circuit tv camera Ceased WO2012064040A2 (en)

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US20150348592A1 (en) * 2014-05-29 2015-12-03 Hanwha Techwin Co., Ltd. Video recorder

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KR101139668B1 (en) 2011-11-28 2012-05-14 광주광역시도시철도공사 Power supply unit of closed-circuit television in subway
KR101305398B1 (en) * 2013-03-18 2013-09-06 (주)가우자리 Apparatus for power supply of cctv

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KR20050020253A (en) * 2003-08-21 2005-03-04 삼성전자주식회사 Switching mode power supply and display apparatus
KR20080056953A (en) * 2006-12-19 2008-06-24 삼성전자주식회사 High voltage power supply
KR20090035827A (en) * 2007-10-08 2009-04-13 엘지이노텍 주식회사 Power supply

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Publication number Priority date Publication date Assignee Title
US20150348592A1 (en) * 2014-05-29 2015-12-03 Hanwha Techwin Co., Ltd. Video recorder
CN105323525A (en) * 2014-05-29 2016-02-10 韩华泰科株式会社 Video recorder
US9747954B2 (en) * 2014-05-29 2017-08-29 Hanwha Techwin Co., Ltd. Video recorder
CN105323525B (en) * 2014-05-29 2018-12-21 韩华泰科株式会社 Video recorder

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