JP2006243824A - Security lighting system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a security lighting system capable of exerting a high threatening effect by controlling lighting by switching a lighting means to a threatening mode in a timely manner when it is determined to be a malicious trespasser based on the output state of a detection signal from a sensor. <P>SOLUTION: This device comprises the sensor for detecting the human body H within predetermined detection areas A<SB>0</SB>-A<SB>N</SB>and for outputting the detection signal PD, a light emission means 121, and lighting control means 13A, 13B for controlling lighting of the light emission means 12 in response to the detection signal PD. The lighting control means 13A, 13B have a first mode setting part 14 for lighting up the light emission means 12 in a first mode for illumination in response to the detection signal PD, and a second mode setting part 17 for lighting up the light emission means 12 in a second mode for threat when receiving a predetermined number of detection signals PD during a predetermined time period T<SB>S</SB>in lighting up in the first mode. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention provides a lighting function that illuminates the feet when ordinary residents and good-visit visitors pass, and when a malicious person such as a trespasser or a thief repeatedly moves within the detection area. The present invention relates to a crime prevention lighting device having a crime prevention function that threatens with a change in lighting.

  Conventionally, for example, a lighting fixture such as a porch light installed at a front door of a general house has a sensor for detecting a human body that has entered a detection area to be illuminated, and whether or not the human body is detected by the sensor. There are devices that are designed to improve power saving and convenience by automatically turning on and off automatically. On the other hand, an illumination device in which a crime prevention function is added to a general illumination function has been proposed (see, for example, Patent Document 1).

  The lighting device to which the crime prevention function is added sets a lighting mode when a human body detection signal is output from the sensor, and continuously turns on the illuminator (illumination load) until a predetermined time elapses. At the same time, only when the detection signal is continuously or intermittently output from the sensor within the predetermined time, the lighting load is continuously turned on for a predetermined time, and the illuminator is continued when the predetermined time has passed. Automatically switches from lighting to flashing. By this blinking lighting, threatening to give anxiety to malicious intruders with malicious intent is carried out and prompt removal is urged.

Japanese Patent Laid-Open No. 2003-208990

  However, in the lighting device, it is difficult to say that the timing for switching to the blinking operation is appropriate, so that a sufficient threatening effect may not be obtained. That is, in the illumination device, when a detection signal is input from the sensor, the illuminator is continuously turned on for a certain time (for example, 30 seconds) or more, and then enters a threatening blinking operation. The transition may be too slow and not fully intimidating. For example, a regular picking thief that unlocks keys such as doors using a special tool called picking is said to unlock in just about 30 seconds, so a thief who has confirmed that he is away beforehand After entering the detection area, if you start the unlocking work by approaching the entrance door as it is, the timing after the thief finishes unlocking or after unlocking and entering the house It will shift to the blinking operation, and cannot be intimidated effectively against a thief.

  The present invention has been made in view of the above-described conventional problems, and is a mode for threatening the light emitting means in a timely manner when it can be determined as a malicious intruder based on the output state of the detection signal from the sensor. It is an object of the present invention to provide a crime prevention lighting device capable of exhibiting a high threatening effect by switching on and controlling lighting.

  In order to achieve the above object, a crime prevention lighting device according to the present invention includes a sensor that detects a human body in a predetermined detection area and outputs a detection signal, a light emitting unit, and the light emitting unit that receives the detection signal. A lighting control means for controlling lighting of the light source, wherein the lighting control means receives the detection signal and turns on the light-emitting means in a first mode for illumination; and in the first mode And a second mode setting unit that turns on the light emitting means in a second mode for threatening when the detection signal is received a set number of times within a predetermined time during lighting.

  According to this configuration, when a house resident, a nearby visitor, or a mail delivery person simply passes through the detection area, the person enters the detection area and outputs a detection signal from the sensor. At that time, the light emitting means is turned on in the first illumination mode and illuminates the feet of the person passing through the detection area. If you set an average time for a family member to finish passing through the detection area as the predetermined time, the detection signal output from the sensor will not reach the set number of times before the predetermined time elapses. , Never enter the second mode of threat.

  On the other hand, whether or not the number of detection signal outputs from the sensor has reached the set number of times until a predetermined time elapses after the light emitting means is turned on in the first mode for illumination by the output of the detection signal from the sensor. Is monitored and when the set number of times is reached, the light emitting means is turned on in the second mode for threatening. A malicious intruder such as a thief usually moves frequently within the detection area of the sensor to check the surroundings before entering the house. The detection signal output from reaches the set number of times.

  Therefore, with this crime prevention lighting device, it is possible to reliably determine the presence of illegal intruders in this detection area, no matter what behavior the illegal intruder takes after entering the detection area, When it is determined that there is an illegal intruder, the light emitting means is immediately switched to lighting of the second mode for threatening without waiting for a predetermined time. Therefore, the timing for shifting to a threatening action is a timely one that can give a great sense of anxiety to an illegal intruder, and an effective threat can be performed.

  In the present invention, it is preferable that the second mode setting unit turns on the light emitting means in the second mode at a first time point after the first time has elapsed after receiving the set number of detection signals. . According to this configuration, in the process in which a house resident or a bona fide visitor passes through the detection area, even if it is delayed for some reason to stop and finish passing, the second light emitting means is used for threatening. The timing of switching to lighting in the mode can be delayed until the time when the resident or the visitor finishes passing through the detection area, thereby preventing discomfort to the householder or the bona fide visitor.

  In the present invention, the light emitting means is turned on in the second mode on condition that the detection signal is further received from the second time point before the first time point to the first time point. Is preferred. According to this configuration, since the timing of switching the light emitting means to the lighting in the threatening second mode is delayed at least until the second time point, the house resident or the bona fide visitor temporarily stops in the process of passing through the detection area. If it can be determined that there is still a trespasser in the time zone between the second time point and the first time point, it is possible to prevent discomfort by flashing the light emitting means in such a case. Since it immediately shifts to lighting in the second mode for intimidation at the time, there is no malfunction and timely intimidation operation, and a higher crime prevention effect can be obtained.

  In the present invention, the light emitting means may be turned on in the second mode on condition that the detection signal is further received after the first time point and before the third time point. According to this configuration, when it is determined that there are still illegal intruders in the time period from the first time point to the third time point, the lighting mode is switched to lighting in the second mode for intimidation. It is suppressed to shift to.

  According to the security lighting device of the present invention, while a house resident or a bona fide visitor etc. simply passes through the detection area, it functions as normal lighting, while a malicious intruder with malicious intent such as a thief When entering the detection area, it is determined that there is an illegal intruder based on the number of detection signal outputs from the sensor reaching the set number of times before the predetermined time elapses. By illuminating the light emitting means in the second mode for threatening, switching to the flashing operation of the light emitting means will be timely corresponding to the behavior of the trespasser, giving a tremendous anxiety to the trespasser Can perform effective threats.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a perspective view schematically showing an optical configuration in an installed state of a crime prevention illumination device according to the first embodiment of the present invention. This security lighting device is installed at a predetermined height on the gate pillar of a general house, the approach area from the gate pillar to the entrance, the carport, the outer wall facing the back door of the house, or the doorway, etc. It functions as a lighting device like a porch light that illuminates the feet of legitimate visitors.On the other hand, when a malicious intruder such as a thief invades, it moves to blinking when it is determined that there is an intruder And threaten to give anxiety to illegal intruders.

FIG. 2 is a perspective view showing the crime prevention lighting device. A detection window 2 is provided at the center of the front surface of the resin unit case 1, and the illumination window 3 is positioned above and below the detection window 2. A display window 4 is provided. The detection window 2, the illumination window 3, and the display window 4 are formed of a resin separate from the unit case 1 and are fitted into the unit case 1. Inside the unit case 1, a sensor 7 for detecting a human body and outputting a detection signal is provided so as to face the detection window 2. As the sensor 7, in this embodiment, a passive infrared system (PIR) is provided. Is used. Sensor 7 of the passive infrared method, the focusing optical system and the focus of the optical system such as a Fresnel lens to set a plurality of detection areas A ₀ to A _n in the monitoring area V of the human body H as shown in FIG. 1 has a pyroelectric element disposed in the vicinity of a passive infrared detector for detecting the far infrared rays human body H in the detection area a ₀ to a _n emits an electrical signal indicative of the amount of light received from the infrared detector And a detection circuit that outputs a detection signal of the human body H when it changes more than a predetermined level over a predetermined number of times. The detection signal is output as a pulse.

  Further, in the unit case 1, an illuminator 8 in which white light emitting diodes are arranged so as to emit from the illumination window 3, and an operation indicator lamp in which red light emitting diodes are arranged in an arrangement so as to emit from the display window 4. 9 are provided. In addition, a sound transmission part 10 is provided on the right side surface of the unit case 1, and a threatening sound generating means 11 such as a speaker disposed opposite to the sound transmission part 10 is built in the unit case 1. This threatening sound generation means 11 generates noise or a sound that prompts the user to leave.

  By the way, there is a conventional lighting device using a unit case having a sensor, an illuminator, and a pilot lamp. When the sensor detects a human body, the pilot lamp is lit for about 2 seconds, for example. While displaying the detection, the illuminator is lit for about 1 minute, for example, to illuminate the feet of the human body passing through the detection area. The lighting device for crime prevention of this embodiment is modified to add a security function to the existing lighting device, and the display window 4 of the unit case 1 is made larger than the existing one, and the pilot lamp Instead of this, the operation operation indicator lamp 9 having a large light emission amount is provided, and further, a lighting control means to be described later is built in the unit case 1. Therefore, this crime prevention lighting device can be manufactured at low cost by utilizing the basic configuration of the existing lighting device.

  FIG. 3 is a block diagram showing an electric circuit of the security lighting device. The light emitting means 12 has a plurality of light emitters that emit different lights in response to detection signals from the sensor 7, and the illuminator 8 and the operation indicator lamp 9 are used as these light emitters. .

  The lighting control means 13A receives the detection signal PD from the sensor 7 and controls the lighting of the light emitting means 12, and receives the detection signal PD to turn on the light emitting means 12 in the first mode for illumination. A mode setting unit 14 and a second mode setting unit 17 that turns on the light-emitting means 12 in a threatening second mode when receiving a set number of detection signals PD within a predetermined time during lighting in the first mode. Have. The first mode setting unit 14 controls the lighting of the illuminator 8 and the operation indicator lamp 9 for the lighting time set in advance in the lighting time setting timer 14a incorporated therein. The second mode setting unit 17 controls the illuminator 8 and the operation indicator 9 to blink alternately for a blinking time set in advance in the built-in blinking time setting timer 17a. The lighting control signals in the first mode and the second mode output from the first mode setting unit 14 and the second mode setting unit 17, respectively, are alternatively supplied to the light emitting unit 12 by the switching operation of the switching unit 23. The switching means 23 is held in the illustrated connection state, that is, in a state where the first mode setting unit 14 is connected to the light emitting means 12 during normal operation.

  The detection delay timer 18 receives a start signal output simultaneously with the first mode lighting control signal by the first mode setting unit 14 and starts measuring a predetermined time, and outputs a low level signal indicating that the time is being measured. When the time is up, a high level time-up signal is output. The pulse counter 19 counts the detection signal input from the sensor 7 and outputs a high-level count-up signal when the count reaches a preset number. In the first AND circuit 21, the output of the detection delay timer 18 is input to one input terminal via the inverter 22, and the output of the pulse counter 19 is input to the other input terminal. In a state where a high level signal obtained by inverting the low level signal output by the inverter 22 is input to the one input terminal of the first AND circuit 21 until the detection delay timer 18 times out. When a high-level count-up signal is input from the pulse counter 19 to the other input terminal, that is, when the condition that the detection signal PD is output the set number of times from the sensor 7 while the detection delay timer 18 is measuring a predetermined time is satisfied. In addition, a high level signal is output. The threatening delay timer 20 is activated when a high level signal is input from the first AND circuit 21, starts a timing operation of a threatening delay time set in advance, and outputs a low level signal indicating that the timing is being performed. When the time is up, a high level time-up signal is output.

  The high level time-up signal output from the threatening delay timer 20 is input to the switching means 23 as a switching signal. As a result, the switching unit 23 is switched to connect the light emitting unit 12 from the first mode setting unit 14 to the second mode setting unit 17, and supplies the lighting control signal of the second mode setting unit 17 to the light emitting unit 12. To do. The high-level time-up signal output from the threatening delay timer 20 is supplied as an activation signal to the second mode setting unit 17 and the threatening sound generating means 11, respectively. The pulse counter 19 is reset when either a high-level time-up signal from the detection delay timer 18 or a high-level signal from the first AND circuit 21 is input to the reset terminal R via the OR circuit 25. Is done. Further, the second AND circuit 24 receives the detection signal PD from the sensor 7 to the other input terminal in a state where the second mode setting signal from the second mode setting unit 17 is input to the one input terminal. Sometimes a high level signal is output. When a high level signal is input from the second AND circuit 24, the second mode setting unit 17 restarts the blinking time setting timer 17a after the time is up.

Next, the operation of the electric circuit of FIG. 3 will be described with reference to FIG. 4 which is a timing chart thereof. Residential family member or bona fide visitor enters in the detection area A ₀ to A _n, the detection signal PD from the sensor 7 which detects the human body H t1 during outputted high level (FIG. 4 (a)) When the activation signal is input to the first mode setting unit 14, the first mode setting unit 14 outputs a lighting control signal for lighting the light emitting means 12 in the first mode for illumination.

That is, the first mode setting unit 14 sets the red operation indicator lamp 9 to a preset short display time (for example, 2 seconds) T _d based on the time measured by the built-in lighting time setting timer 14a activated at t1. (FIG. 4 (d)) is displayed to indicate that a human body has been detected, and the white illuminator 8 is continuously lit for a preset illumination time (for example, 1 minute) T _L (FIG. 4). 4 (e)), control to illuminate the feet of the householder. Further, the first mode setting unit 14 supplies the activation signal to the detection delay timer 18 simultaneously with outputting the lighting control signal at t1. As a result, the detection delay timer 18 starts the timing operation for the detection determination time T _S which is a predetermined time set in advance (FIG. 4B) and outputs a low level signal indicating that the timing operation is being performed. To do. In the first mode, the operation indicator lamp 9 may be set not to be lit.

The detection delay timer 18 detects determination time T _S that is set to either human H present in the detection area A ₀ to A in which _n is intruders with malicious intent or a family member or bona fide visitors The pulse counter 19 counts the number of outputs of the detection signal PD that has detected the movement of the human body within the detection determination time T _S. In this crime prevention lighting device, for example, “10” is set as the set number of times for detection determination in the pulse counter 19, and the count number of the pulse counter 19 is “10” before the detection determination time T _S elapses. When it reaches, it is determined that it is a trespasser.

In the case of a family member or good faith of the visitor is, usually, since before the detection judgment time T _S to unlock the door After quickly passing through the detection area A ₀ ~A _n has elapsed within the housing, the detection The count number of the pulse counter 19 does not reach “10” within the determination time T _S. Therefore, until the detection delay timer 18 that counts the detection determination time T _S is up, the high level signal obtained by inverting the low level signal output from the detection delay timer 18 by the inverter 22 is the first AND circuit 21. Although it is input to one input terminal, a high level count-up signal is not input from the pulse count 19 to the other input terminal of the first AND circuit 21, so that the high level delay timer 20 outputs a high level from the first AND circuit 21. No level activation signal is input. At time t2, when the detection delay timer 18 times up (FIG. 4B), the pulse counter 19 is reset by a high-level time-up signal output from the detection delay timer 18. Since the first mode setting unit 14 stops the output of the lighting control signal when the lighting time setting timer 14a finishes counting the lighting time _TL , the illuminator 8 is turned off.

Next, intruders with malicious intent, such as a thief from entering in the detection area A ₀ to A _n, the detection signal PD (FIG. 4 from the sensor 7 detects this body H is output at t3 (a )) Is input to the first mode setting unit 14 as an activation signal, the first mode setting unit 14 outputs a lighting control signal for lighting the light emitting means 12 in the first mode for illumination. In addition, the operation indicator lamp 9 is turned on for the display time _Td (FIG. 4D), and the illuminator 8 is set to be continuously lit for the illumination time T _L (FIG. 4E). Further, the detection delay timer 18 receives the activation signal from the first mode setting unit 14 and starts the time counting operation of the detection determination time T _S (FIG. 4B).

Intruders usually before entering the house, the pulse counter before because frequently moves in the detection area A ₀ to A _n to ask the state of surrounding the predetermined detection determination time T _S has elapsed The count number of 19 reaches the set number.

When the tenth detection signal PD, which is the set number of times, is output from the sensor 7 at t4 before the detection determination time T _S elapses, before the detection delay timer 18 times up the detection determination time T _S. Therefore, in a state where the high level signal obtained by inverting the low level signal output from the detection delay timer 18 by the inverter 22 is input to one input terminal of the first AND circuit 21, the pulse counter 19 Since the high-level count-up signal is input to the other input terminal of the first AND circuit 21, the threatening delay timer 20 receives the high-level activation signal from the first AND circuit 21 and takes a threatening delay time (first The time counting operation of T _D1 is started (FIG. 4C), and the pulse counter 19 resets the high level signal from the first AND circuit 21. Reset at the terminal R.

Intimidation delay timer 20 is timed up intimidate delay time T _D1 o'clock t7 (first time point) and (FIG. 4 (c)), the time-up signal of high level output from the threat delay timer 20, the The start signal is supplied to the two-mode setting unit 17 and the threatening sound generating unit 11 and the switching signal is supplied to the switching unit 23. Thereby, the switching unit 23 switches the light emitting unit 12 from the connection state to the first mode setting unit 14 to the connection state to the second mode setting unit 17. In addition, the second mode setting unit 17 supplies a lighting control signal for lighting in the second mode for threatening to the light emitting unit 12 through the switching unit 23 after switching. Thereby, the illuminator 8 and the operation indicator lamp 9 are alternately blinked by the lighting control supplied from the second mode setting unit 17 (FIGS. 4E and 4D). This blinking operation is continued until the built-in blinking time setting timer 17a started at t7 in the second mode setting unit 17 reaches the preset blinking time _TF . Further, rattling sound generating means 11 during the preset time T _R, generates a large noise or speech.

As described above, in this crime prevention lighting device, since the detection signal PD is output from the sensor 7 within the detection determination time T ₃ for the set number of times, it is detected and determined that there is an illegal intruder. even if penetrated into the behavior in the detection area a ₀ to a in _n, with the presence of intruders in the detection area a ₀ to a in _n can be reliably determined, determination of the presence of the trespasser When the threatening delay time T _D1 has passed (from t4) (t7), the light emitting means 12 is immediately set in the second mode for threatening without waiting for the detection judgment time T _S to pass. Since switching to lighting is performed, switching to the second mode for intimidation can be performed in a timely manner with respect to the behavior of illegal intruders. On the other hand, in the existing lighting device, a threatening operation by flashing always waits until a predetermined time elapses (corresponding to t8 in FIG. 4B) regardless of the number of output of the detection signal from the sensor. Therefore, effective threats may not be possible due to delays in threat actions.

  Further, the light emitting means 12 has two light emitters, ie, an illuminator 8 and an operation indicator lamp 9 that emit light different in white and red, respectively, and these light emitters 8 and 9 emit light 2 respectively. Since the luminescent colors of the seeds are flashing alternately, the intruder should be threatened enough to give a strong sense of anxiety and give a strong psychological pressure, abandon the crime and leave the spot Can be urged. Further, since the light emitting diodes used as the light source of the illuminator 8 and the indicator lamp 9 can be easily controlled to be turned on and off at an extremely short cycle to perform a violent flash operation, such lighting control is performed. By doing so, more effective threat can be performed. In addition, the light-emitting diodes 8a and 9a have an advantage that quality deterioration is small over a long period even when a violent flash operation is performed.

  Moreover, in this crime prevention apparatus, the above-mentioned illuminator 8 and indicator lamp 9 are alternately blinked, and at the same time, the threatening sound generating means 11 is also operated (FIG. 4 (f)). Since the illegal intruder can be threatened more effectively, the crime prevention effect is further enhanced.

  Further, when the second mode setting unit 17 performs the control of alternately flashing the illuminator 8 and the operation indicator lamp 9 in the second mode, that is, the flashing time setting timer 17a of the second mode setting unit 17 is timed up. If the detection signal PD is output from the sensor 7 until then, the second mode setting signal from the second mode setting unit 17 is input to one input terminal of the second AND circuit 24. Since the detection signal PD is input to the other input terminal in the state, the high level signal output from the second AND circuit 24 is supplied to the second mode setting unit 17 as a restart signal of the blinking time setting timer 17a. Therefore, when an illegal intruder receives a threat from the lighting control of the light emitting means 12 in the second mode but does not leave quickly, the illuminator 8 and the operation indicator light 9 blink alternately. The threatening action is continued. Thereby, a higher crime prevention effect can be obtained.

In the above embodiment, the threatening delay timer 20 is started from t4 when the detection signal PD is output from the sensor 7 a set number of times and the presence of an illegal intruder is detected, and the threatening operation is performed until t7 after the threatening delay time T _D1 elapses. Is delayed. This proceeds when as stopped temporarily for some reason in the course of the family member or bona fide visitor passes through the detection area A ₀ to A _n, the blinking of the light emitting means 12 according to the second mode for intimidation timing delays until such time as the family member or visitors passing completely through the detection area a ₀ to a _n, in order to prevent the discomfort.

However, the threatening delay timer 20 can arbitrarily variably set the threatening delay time T _D1 within a range of 15 seconds or less. Therefore, for example, a housekeeper can temporarily stop like a house entrance or back door. In the case of installation in a place with little nature, the threatening delay time T _D1 may be set to 0 seconds. In that case, as indicated by a two-dot chain line in FIGS. 4D and 4E, the light emitting means 12 is used for threatening at t4 when the detection signal PD is output a set number of times and it is detected that there is an illegal intruder. It is possible to immediately shift to the threatening action of blinking in the second mode, and to obtain an effective crime prevention function adapted to the conditions of the installation location. In addition, the detection determination time T _S and the number of detection signal PD settings for determining an illegal intruder can be arbitrarily changed according to the installation location and installation conditions.

FIG. 5 is a block diagram showing an electric circuit of the crime prevention lighting device according to the second embodiment of the present invention. In FIG. 5, the difference from FIG. 3 is that the lighting control means 13B is the lighting control means of FIG. 13A in addition to the short intimidation delayed from rattling delay time T _D1 of the first threatening delay timer 20 receives the high level signal outputted from the first aND circuit 21 (identical to intimidate delay timer 20 in Fig. 3) When the detection signal PD is input from the sensor 7 in a state where the second threatening delay timer 27 for measuring the time T _D2 and the high-level time-up signal is input from the second threatening delay timer 27, the high level signal is output. Either the third AND circuit 28 to output and the high level time-up signal from the first threatening delay timer 20 or the high level signal from the third AND circuit 28 It is the only point that a OR circuit 29 outputs a high level signal when the input.

Next, the operation of the electric circuit of FIG. 5 will be described with reference to FIG. 6 which is a timing chart thereof. In FIG. 6, the same timing as in FIG. The security lighting device of this embodiment is different from that of the first embodiment in that the tenth set number of times from the sensor 7 at t4 before the detection determination time T _S timed by the detection delay timer 18 elapses. When the detection signal PD is output, the first threatening delay timer 20 starts to count the threatening delay time (first time) T _{D1 using} the high level signal output from the first AND circuit 21 as a start signal. Then, the second threatening delay timer 27 starts the timing operation of the threatening delay time T _D2 (FIG. 6 (d)).

At time t5, when the high-level time-up signal output by the second threatening delay timer 27 is timed out and is input to one input terminal of the third AND circuit 28, the third AND circuit 28 In a state where a high level signal is inputted to the input terminal, the first threatening delay timer 20 is t5 (second time) before t7 (first time) when the threatening delay time T _D1 is scheduled to be completed. The detection signal PD is monitored to be input to the other input terminal between the time point and time t7. At this time, when the detection signal PD is output from the sensor 7 at time t6 before time t7 passes after time t5 (FIG. 6A), a high level is output from the third AND circuit 28. The signal is supplied as a switching signal to the switching means 23 via the OR circuit 29 and to the second mode setting unit 17 and the threatening sound generating means 11 as a start signal. Therefore, the second mode setting unit 17 uses the switching means 23 after switching the lighting control signal to be lit in the second mode for threatening at t6 before time t7 when the first threatening delay timer 20 times out. The light is supplied to the light emitting means 12. As a result, the illuminator 8 and the operation indicator lamp 9 are alternately blinked (FIGS. 6F and 6E).

Therefore, in this embodiment, the first threatening delay timer 20 waits for the completion of the timing of the threatening delay time T _D1 during the timing at t6 when it can be surely determined that there is a malicious intruder like a thief. However, since it is possible to immediately shift to lighting in the second mode for threatening at t6 when the discrimination can be made, a more timely threatening operation can be obtained and a higher crime prevention effect can be obtained. In the case where the detection signal PD is not output from the sensor 7 between the time t5 when the second threatening delay timer 27 times up and the time t7 when the first threatening delay timer 20 times up, the first embodiment Similarly, at time t7 when the first threatening delay timer 20 times out, the second mode setting unit 17 is activated by the high-level time-up signal output from the first threatening delay timer 20, and according to the second mode for threatening. Transition to lighting.

In the second embodiment, the second threatening delay timer 27 is omitted and, as indicated by a two-dot chain line in FIG. 6 (d), the restart from t7 time (first time point) to t9 time (third time point). A gate circuit that opens for the detection time T _D3 is provided, and the light emitting means 12 is lit in the second mode on the condition that the detection signal PD is further received during the re-detection time T _D3 , and the threatening sound generation means 11 May be activated. According to this configuration, when the intruder still determines that there is still an intruder in the time period T _D3 from t7 to t9, the lighting mode is switched to lighting in the second mode for intimidation. It is suppressed to shift to.

  In each of the above embodiments, the sensor 7, the light emitting means 12, and the lighting control means 13A, 13B are housed in the single unit case 1, but unlike the above, the sensor 7, the light emitting means 12, and the lighting control means. 13A and 13B can be configured as three units separately housed in individual cases, and these units can be electrically connected to form the security device of the present invention.

  In each of the above embodiments, a case where a passive infrared sensor is used as the sensor 7 for detecting a human body has been described as an example. However, the sensor 7 detects a human body and outputs a detection signal. For example, an active infrared (AIR) system that projects near infrared rays and detects near infrared rays reflected from the human body, a Doppler sensor that utilizes the Doppler effect of microwaves, ultrasonic waves or radio waves is detected. An ultrasonic or radio wave type active sensor provided with a transmitting element and a receiving element that transmit and receive as a line can be used. In addition, the blinking operation of the illuminator 8 and the operation indicator lamp 9 may be controlled to be turned on so that the brightness changes in an analog manner without being completely turned off when the lights are turned off. .

It is a perspective view which shows typically the optical structure of the installation state of the illuminating device for crime prevention concerning 1st Embodiment of this invention. It is a perspective view which shows the illuminating device for crime prevention same as the above. It is a block diagram which shows the electric circuit of the illumination device for crime prevention same as the above. (A)-(f) is a timing chart by operation | movement of an electric circuit same as the above. It is a block diagram which shows the electric circuit of the illuminating device for crime prevention which concerns on 2nd Embodiment of this invention. (A)-(g) is a timing chart by operation | movement of an electric circuit same as the above.

Explanation of symbols

7 sensor 12 light emitting means 13A, 13B lighting control means 14 first mode setting part 17 second mode setting part A _{0 to An} detection area H human body PD detection signal t5 second time point t7 first time point t9 third time point

Claims (4)

A sensor that detects a human body in a predetermined detection area and outputs a detection signal; a light emitting unit; and a lighting control unit that controls lighting of the light emitting unit in response to the detection signal,
The lighting control means includes
A first mode setting section for receiving the detection signal and lighting the light emitting means in a first mode for illumination;
A second mode setting unit that turns on the light emitting means in a threatening second mode when receiving the set number of detection signals within a predetermined time during lighting in the first mode;
Security lighting device.   2. The crime prevention illumination device according to claim 1, wherein the second mode setting unit turns on the light emitting means in the second mode at a first time point after a first time has elapsed after receiving the detection signal of the set number of times.   3. The light emitting device according to claim 2, wherein the light emitting unit is turned on in the second mode on condition that the detection signal is further received from the second time point before the first time point to the first time point. Security lighting device. 3. The crime prevention lighting device according to claim 2, wherein the light emitting means is lit in the second mode on condition that the detection signal is further received after the first time point and before the third time point.

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