JP2009017185A - Monitoring camera - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a monitoring camera which is capable of obtaining an effective image even at night by infrared illumination and intimidates a trespasser by visible light illumination to be available as a convenient light or the like. <P>SOLUTION: The monitoring camera has an infrared LED, an imaging part, and a sensor part disposed in a camera body case and is capable of picking up an image in a monitor area with infrared illumination of the infrared LED by the imaging part, and a visible LED is disposed in the body case and is lit or blinks in a prescribed mode by a detection signal of the sensor part or an external input signal. The infrared LED and the visible LED are mounted in a prescribed arrangement on one printed circuit board disposed in the body case, and the mode is set to at least two modes out of a normal mode for a continuous lighting state, a blinking mode for a blinking state, and an alert mode for illuminance lower than that of the normal mode. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a surveillance camera used in a security system or the like, and more particularly to a surveillance camera that can be used as a threat to an intruder or a convenient light.

Conventionally, as a surveillance camera, a night vision type and a visible light illumination type are used. The night-vision type surveillance camera has an imaging unit made up of a CCD imaging device, an infrared LED, a sensor unit, and the like arranged in a main body case, and the main body case is installed on a ceiling, a wall surface, etc. Images of intruders and the like in the monitoring area are picked up by light illumination. Further, the visible light illumination type surveillance camera captures an image of an intruder or the like with visible light illumination by a halogen lamp arranged in the main case. Note that there are, for example, Patent Document 1 and Patent Document 2 as publications regarding this type of imaging apparatus.
JP 2006-237733 A Japanese Patent Laid-Open No. 11-252424

  However, in a night vision type surveillance camera, an intruder or the like can be imaged with infrared light by an infrared light LED arranged in the main body case, but the infrared light illumination is used as a threat to the intruder. However, it is necessary to separately provide a threatening device such as an intimidating lighting device or a bell, and the surveillance camera system tends to be expensive. In addition, in the visible light illumination type surveillance camera, although color imaging is performed with visible light illumination with a halogen lamp and threatening to intruders, the power consumption is high and the maintenance cost of the surveillance camera increases, and the visible light is lit It is difficult to obtain an image when it is not, and it is difficult to perform continuous monitoring regardless of day or night.

  The present invention has been made in view of such circumstances, and an object of the present invention is to obtain an effective image at night by infrared light illumination, and from a threat to an intruder by visible light illumination, a convenient light, etc. It is in providing the surveillance camera which can be used as.

  In order to achieve such an object, the invention according to claim 1 of the present invention is such that an infrared LED, an imaging unit, and a sensor unit are arranged in a main body case, and is monitored by infrared illumination by the infrared LED. A visible light LED is arranged in the main body case, and the visible light LED is turned on in a predetermined mode by a detection signal or an external input signal from the sensor unit. It is characterized by flashing.

  The invention according to claim 2 is characterized in that the infrared light LED and the visible light LED are mounted in a predetermined arrangement on the same printed circuit board disposed in the main body case. The invention described in 3 is characterized in that the mode is at least two of a normal mode in a continuous lighting state, a flashing mode in a flashing state, and a warning mode in which the illuminance is darker than the normal mode.

  According to the first aspect of the present invention, the visible light LED is disposed in the main body case where the infrared light LED, the imaging unit, and the sensor unit are disposed, and the visible light LED is detected by the sensor unit. Since it lights up or blinks in a predetermined mode by an external input signal, infrared illumination with infrared LEDs can provide a good image in the monitoring area even at night, and it can be monitored at low cost regardless of day or night. It can be used, and visible light illumination with visible light LEDs can be used as intimidation and convenient lights for intruders, eliminating the need to separately provide intimidation lighting devices, etc., low cost and excellent usability A surveillance camera can be obtained.

  According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, the infrared light LED and the visible light LED are provided on the same printed circuit board disposed in the main body case. Since it is mounted in an array, the visible light LED and the infrared light LED can be efficiently arranged in the main body case, and effective video imaging and threatening can be performed, and the surveillance camera itself can be downsized. Can be planned.

  According to the invention described in claim 3, in addition to the effect of the invention described in claim 1 or 2, the visible light LED is lit in at least two modes of a normal mode, a flashing mode, and a warning mode. By setting each mode, an effective threat can be achieved and it can be used more effectively as a convenient light.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
1 to 5 show an embodiment of a surveillance camera according to the present invention, in which FIG. 1 is a perspective view with the cover member removed, FIG. 2 is a front view of the main part, and FIG. 3 is a control system. FIG. 4 is a block diagram, FIG. 4 is an explanatory diagram showing the lighting state of the infrared light LED, and FIG. 5 is an explanatory diagram showing the lighting state of the visible light LED.

  As shown in FIG. 1, the surveillance camera 1 has a main body that is formed in a dome shape and has a substantially bottomed cylindrical main body 2a and a cover 2b attached to the opening of the main body 2a. Case 2 is provided. In the main body case 2, a pair of left and right printed boards 5 a and 5 b on which the infrared light LED 3 and the visible light LED 4 are mounted are disposed. The printed circuit boards 5a and 5b are arranged so that the light of the LEDs 3 and 4 mounted on the printed circuit boards 5a and 5b is irradiated into the alert area from an opening provided on the cover portion 2b and covered with a cover member (not shown). Has been.

  In addition, as shown in FIG. 2, each of the LEDs 3 and 4 is mounted on each of the substrates 5a and 5b (in the figure, nine infrared light LEDs 3 and three visible light LEDs 4), and infrared rays are mounted. The light LEDs 3 are mounted in approximately two rows, and the visible light LEDs 4 are mounted in one row in parallel with the infrared light LEDs 3. Further, the two substrates 5a and 5b on which the LEDs 3 and 4 are mounted are arranged such that their mounting surfaces have a predetermined angle. The arrangement state and number of the LEDs 3 and 4 and the arrangement form of the substrates 5a and 5b are examples, and are appropriately determined according to the illuminance of visible light required for the surveillance camera 1 and the size of the warning area. Can be set.

  FIG. 3 shows a control system block diagram of the surveillance camera 1, which will be described below. The surveillance camera 1 includes a control unit 6 composed of a microcomputer or the like, a power supply circuit 7 connected to an external power supply terminal 8 for supplying power to the control unit 6, and a synchronization separation circuit 9 connected to the input side of the control unit 6. And a signal processing circuit 10 and an overlapping circuit 11 connected to the output side of the control unit 6. An imaging unit 12 made of a color CCD element or the like is connected to the synchronization separation circuit 9 and the overlap circuit 11, and a sensor unit 13 made of a CDS element (pyroelectric element) or the like is connected to the signal processing circuit 10. Yes.

  Further, the infrared LED 3 and the visible light LED 4 are connected to the output side of the control unit 6 and a signal output terminal 14 is connected to the output side, and a video output terminal 15 is connected to the overlap circuit 11. Yes. Further, a mode setting unit (not shown) including a mode setting switch or the like is connected to the control unit 6 via an external signal input terminal 16. That is, in the monitoring camera 1, an imaging unit 12 that functions as a color camera and a sensor unit 13 that functions as a heat ray sensor are integrally incorporated in the main body case 2. Each circuit is mounted on the printed circuit boards 5a and 5b, or is mounted on another printed circuit board disposed in the main body case 2 (not shown).

  Next, an example of the operation of the surveillance camera 1 configured as described above will be described with reference to FIGS. 4 and 5. As shown in FIG. 4A, when power is supplied to the control unit 6 via the power supply circuit 7, the power is turned on and the illuminance sensor is dark in the monitoring area as shown in FIG. 4B. If it judges, a lighting signal will be output to each infrared light LED3 from the control part 6, and this LED3 will light. An image in the alert area is picked up by the image pickup unit 12 of the surveillance camera 1 by the infrared light illumination that is emitted when the infrared light LED 3 is turned on, and the image pickup data is synchronized with the synchronization separation circuit 9, the control unit 6, and the overlap circuit 11 Or the like, and output from a video output terminal 15 to a recording device as an external device (not shown) for recording or transmission to a monitoring center for storage.

  On the other hand, as shown in FIG. 5A, when an external input signal is input from the external input terminal 16, each visible light LED 4 is turned on via the control unit 6. At this time, the visible light LED 4 is turned on. For example, it is lit in three modes. That is, when the normal mode is set by the mode setting unit and a signal is input from the external signal input terminal 16 to the control unit 6, the current value I continues to the visible light LED 4 as shown in FIG. The visible light LEDs 4 are continuously lit. This normal mode is applied when the surveillance camera 1 is used as a convenient light such as a night light.

  Further, when the alert mode is set by the mode setting unit, as shown in FIG. 5C, a current value lower than the current value I (for example, current value I / 2) is supplied to the visible light LED 4, Each visible light LED 4 lights up or blinks in a state where the illuminance is lower than in the normal mode. When the visible light LED 4 is turned on, visible light darker than the normal mode is emitted from the monitoring camera 1 into the warning area, so that an intruder or the like is informed that the warning state is present.

  Further, as shown in FIG. 5D, when the blinking mode is set by the mode setting unit and a signal is input from the external signal input terminal 16 to the control unit 6, or when an intruder is detected by the sensor unit 13. When turned ON, the current value I is supplied in a pulse form from the control unit 6 to each visible light LED 4, and each LED 4 blinks. The blinking pattern of the visible light LED 4 at this time can change the blinking state appropriately by increasing / decreasing the on / off time T1, and the current value I can be increased / decreased to change the illuminance of the visible light LED 4 at the time of blinking. You can also.

  Since this blinking mode is executed when an intruder is detected by the sensor unit 13, a threatening effect to the intruder can be obtained by blinking the visible light LED 4, and at that time, the blinking state is set to a predetermined value. Thus, a more effective threat effect can be obtained. In other words, according to the monitoring camera 1, the visible light LED 4 provided in the monitoring camera 1 is lit in three modes of normal, warning, and blinking according to the mode set by the mode setting unit.

  In the above example, the example in which the visible light LED 4 is lit in the normal mode, the warning mode, and the flashing mode has been described. However, for example, a flashing mode as illustrated in FIG. 6 may be added. it can. That is, as shown in FIG. 6A, when an intruder is detected by the sensor unit 13, the three visible light LEDs 4 (visible light LEDs 1 to 3 in the figure) on the respective substrates 5 a and 5 b are illustrated. As shown in FIG. 6 (b), the lights are sequentially turned on, or as shown in FIG. 6 (c), the lights are turned on in order with a predetermined time difference T2 to move the light. Also at this time, the current value I supplied to each LED 4 is changed as indicated by the two-dot chain line in FIG. 6B to create various blinking states and further enhance the intimidating effect on the intruder. You can also. In the case of this embodiment, depending on the number of visible light LEDs 4, the visible light LEDs 4 can be lit in groups.

  Thus, in the monitoring camera 1 of the above embodiment, the infrared light LED 3 and the visible light LED 4 are arranged in the main body case 2 in which the imaging unit 12 and the sensor unit 13 are built, and the visible light LED 4 is monitored. Since the light is turned on according to the situation in the area, it is possible to obtain a good image in the monitoring area even at night by infrared light illumination by the infrared LED 3, and it is possible to perform monitoring at low cost regardless of day or night. .

  Further, since the visible light LED 4 is turned on when an intruder is detected by the external input signal or the sensor unit 13, the visible light illumination can be used as a convenient light such as a night light by the external input signal. When the light is detected, visible light illumination can be used as a threat to an intruder, and there is no need to separately provide a threatening illumination device or threatening device as in a conventional night vision type surveillance camera. In particular, the visible light LED 4 is lit in at least two modes, a normal mode, a blinking mode, and a warning mode. Therefore, an effective threat can be achieved by setting each mode, and it can be used more effectively as a convenient light. Accordingly, it is possible to obtain the surveillance camera 1 which is inexpensive and easy to use.

  Further, since visible light illumination that can be used for threatening is performed by turning on the visible light LED 4, the power consumption of the surveillance camera 1 itself can be reduced and the life of the LEDs 3 and 4 itself can be extended compared to a halogen lamp or the like. This can reduce the maintenance cost. Furthermore, since the infrared light LED 3 and the visible light LED 4 are mounted in a predetermined arrangement on the printed circuit boards 5 a and 5 b disposed in the main body case 2, the visible light LED 3 and the infrared light LED 4 are placed in the main body case 2. In addition, it is possible to effectively arrange images, to irradiate predetermined light in a desired direction, and to perform effective imaging and threatening, and to reduce the size of the monitoring camera 1 itself.

  In the above embodiment, the visible light LED 4 is mounted on the same substrate 5a, 5b as the infrared light LED 3, but the present invention is not limited to this configuration. For example, the visible light LED 4 is mounted on a dedicated printed circuit board. The visible light may be irradiated in a predetermined direction. Moreover, in the said embodiment, although visible light LED4 was turned on by the detection signal of the sensor part 13 arrange | positioned in the main body case 2, the threatening effect was acquired, For example, it provided separately from the surveillance camera 1 The visible light LED 4 in the monitoring camera 1 can be turned on in conjunction with various sensors such as a heat ray sensor to obtain a threatening effect.

  Further, the lighting mode of the visible light LED 4 in the above embodiment, or the block diagram of the control system is an example, and for example, in the warning mode, a part of the flashing mode is added, etc. The present invention can be changed as appropriate without departing from the scope of the inventions.

  The present invention is not limited to a dome-type monitoring camera having an overall shape, and can be used for various monitoring cameras in which an imaging unit and a sensor unit are integrated.

The perspective view of the state which removed the cover member of the surveillance camera concerning this invention Front view of the main part Block diagram showing the control system Explanatory drawing which shows the lighting state of the same infrared light LED Explanatory drawing which shows the lighting state of the visible light LED Explanatory drawing which shows the other lighting state of the visible light LED

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Surveillance camera, 2 ... Main body case, 3 ... Infrared light LED, 4 ... Visible light LED, 5a, 5b ... Printed circuit board, 6 ... Control part, 7 ... Power supply circuit, 8 ... external power supply terminal, 9 ... sync separation circuit, 10 ... signal processing circuit, 11 ... overlapping circuit, 12 ... imaging unit, 13 ... sensor unit, 14 ... Signal output terminal, 15 ... Video output terminal, 16 ... External signal input terminal.

Claims (3)

An infrared LED, an imaging unit, and a sensor unit are arranged in a main body case, and is a monitoring camera capable of capturing an image in a monitoring area with infrared illumination by the infrared LED,
A monitoring camera, wherein a visible light LED is disposed in the main body case, and the visible light LED is lit or blinks in a predetermined mode in accordance with a detection signal of the sensor unit or an external input signal.   The surveillance camera according to claim 1, wherein the infrared light LED and the visible light LED are mounted in a predetermined arrangement on the same printed circuit board disposed in the main body case.   3. The surveillance camera according to claim 1, wherein the mode is at least two of a normal mode in a continuous lighting state, a flashing mode in a flashing state, and a warning mode in which an illuminance is darker than the normal mode.

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