JPH01289094A - lighting equipment - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application 1] The present invention relates to a lighting fixture that automatically flashes depending on surrounding conditions.

[Prior Art J] Conventionally, there have been lighting devices of this type that automatically turn on and off depending on the surrounding situation, as shown in FIGS. 7 to 110. That is, an ultrasonic, heat ray, and light beam type human body detection sensor 1, a light/darkness detection sensor 7 that detects surrounding brightness and darkness, and a load control signal that causes the lighting lamp 4 to blink based on the outputs of both detection sensors 1.7 are generated. It is composed of a control circuit 2 and a load drive circuit 3 that controls the lighting lamp 4 on and off based on a load control signal, and each circuit 1 to 3 is supplied with power from an unregulated power source 5 such as a battery power source. It has become. Further, the malfunction prevention circuit 6 temporarily stops the human body detection processing operation by the control circuit 2 when the illumination lamp 4 that is on is turned off, and the IIJ11 circuit 2
It is formed by an amplification detection circuit 2a and a determination control circuit 2b.

Since FIG. 6 shows a specific circuit example, the ultrasonic human body detection sensor 1 includes inverters I, 1. The ultrasonic transducer X receives the reflected waves from the detected object (human body) of the sound waves transmitted from the ultrasonic transducer X driven by the output of the oscillation circuit formed by the crystal oscillator The transfer signal is then output as a detection signal via the diode D1. The amplification/detection circuit 2a of the control circuit 2 includes two operational amplifiers op, op, and a transistor Q,
The detection signal output from the human body detection sensor 1 is amplified and then detected, and the determination control circuit 2b to which this amplified and detected signal is inputted includes an inverter I, an inverter 3, and a transistor Q+s. It is formed using a capacitor C,,C,, a resistor R8 and a volume VR, and a resistor R
, and a capacitor C1, which removes noise and outputs a load control signal that turns on the illumination lamp 4 when the integrated signal level exceeds the operating threshold of the inverter I. A timer circuit in which a timer time is set in a time constant circuit consisting of a zovolume VR outputs a load control signal that turns off the illumination lamp 4 with a delay. That is,
Depending on whether a detection signal of a predetermined level or higher is obtained continuously for a certain period of time, it is determined whether the detection signal is of an object to be detected, thereby preventing malfunctions due to noise signals.

In addition, the load drive circuit 3 includes a transistor Q driven by a load control signal output from the inverter 4.
:+a-Qsb, and when the load control signal becomes H'', turns on the transistor Q coat Qib to turn on the illumination lamp 4.Furthermore, the malfunction prevention circuit 6 according to the present invention , transistor Q1, capacitor C1 and resistor R2,R.

When the illumination lamp 4 is turned off, the input of the detection signal to the determination control circuit 2b of the control circuit 2 is temporarily blocked to stop the detection operation.

Furthermore, the light/dark detection sensor 7 is formed of a 7-autotransistor TR+, a switching transistor Q, an inverter 6, and a diode D2, so that the surrounding brightness is at a predetermined level. When the voltage becomes higher than that, the output of inverter ① becomes H'' and the output of transistor Q changes to 6.

is turned on and the operational amplifier power supply Vop is output.

The operation of the embodiment will be described below. FIG. 7 is a time chart showing the operation, and the detection signal Vs output from the human body detection sensor 1 is now as shown in FIG. 2a
Amplified and detected, amplified and detected! A signal Va as shown in FIG. J7 (c) is input to the determination control circuit 2b.

Here, it is determined that the object to be detected has entered the detectable range.
If detected at one point in time, 1. Detection signal V from point
The level of the signal Va obtained by amplifying and detecting s becomes large, and the seventh signal Va is delayed by the integration time (judgment time) To from this time t11.
The load control signal Ve shown in FIG. 7(d) becomes H'', and as shown in FIG. When the object to be detected comes out of the possible range and the detection signal VS is no longer obtained and the signal Va becomes 'L'', the timer circuit in the determination control circuit 2b starts operating from this time t3 (capacitor C2
is discharged via the volume VR), and the load control signal becomes L'' after a certain period of time T1 set by the timer circuit.
, and at the 14th point, the lights 2 and 4 are turned off. By the way, the power supply voltage supplied to each circuit 1 to 3 varies depending on the operation of the illumination lamp 4, as shown in FIG. 7(&).
, descends when the lamp is turned off, and rises when it is turned off), and the detection signal Vs on which the noise ■N accompanying the power supply fluctuation is superimposed at the time point 14 when the lighting lamp 4 is turned off is output from the human body detection sensor 1 (see Fig. 7).
Here, the malfunction prevention circuit 6 feeds back the operating signal of the illumination lamp 4 (in the embodiment, a signal obtained by inverting the load control signal at the inverter I) Vc'. As, transistor Q, @
7 (g), the transistor Q is turned on for a certain period of time from the time t when the illumination lamp 4 is turned off, and the output of the amplification/detection circuit 2a is input to the judgment control circuit 2b. It is designed to prevent the detection operation from occurring. In this case, if the time T 2 (t4 to t@) for stopping the detection operation is set longer than the noise generation period T 5 (t4 to ts) when the illumination lamp 4 is turned off,
Malfunctions due to /isVN when the illumination lamp 4 is turned off can be reliably prevented. FIG. 8 shows the malfunction prevention circuit 6.
FIG. 3(a) shows the signal Va output from the amplification/detection circuit 2a, FIG. 2(b) shows the load control signal Vc, and FIG.
', (d) is the base signal of the transistor Q b1
The figure (e) shows the operating state of the transistor Q4, and the figure (f) shows the operating state of the transistor Q4.
is the signal Va' input to the determination control circuit 2b.

In addition, the light/dark detection sensor 7 detects the ambient brightness using a transistor TR, and when the ambient brightness is above a predetermined level (i.e., bright), the output of the inverter becomes "H". Therefore, the oscillation operation of the crystal oscillation circuit is forcibly blocked, and the human body detection processing operation is stopped. At this time, the transistor Q, which is controlled by the inverter 6 output, is turned off, so the operational amplifier power supply Vop, which is supplied to the operational amplifiers op, op, is not output, so that the amplifier circuit is not operated unnecessarily. The aim is to save power.

On the other hand, the surrounding brightness is below a certain level (i.e. dark)
At this time, the output of the inverter becomes L", so the oscillation operation of the crystal oscillation circuit is started, and the power Vop is supplied to the operational amplifier OP+-OP2 of the amplifier circuit 2a, and normal human body detection processing operation is performed. Then, the illumination lamp 4 is turned on by detecting the human body.

FIG. 9 shows a specific configuration of the lighting fixture according to the present invention, FIG. 9(,) is a front view with the lamp cover 11 removed, FIG.
A battery 5 is housed in the upper part, an illumination lamp 4 with an arm plate 12 is arranged in the lower part, and a lamp drive circuit 13 is arranged behind the reflector plate 12. Further, the ultrasonic transducer X of the human body detection sensor 1 and the transistor 7r) of the light/darkness detection sensor 7 are arranged at the center of the front surface of the housing 10.

[Problem to be Solved by the Invention 1] However, in the above-mentioned conventional example, the light/dark detection sensor 7 makes a judgment of brightness→darkness, and power is not supplied to the operational amplifier OP+-OP2 of the amplification/detection circuit 2a. When this occurs, a noise signal due to instability of the reference voltage of the operational amplifier OP is output from the amplification/detection circuit 2a, causing a malfunction in which the lighting lamp 4 is turned on regardless of the presence or absence of a human body or movement. There was a problem. Further, even when the dark→light determination is made, there is a problem in that the noise pulses received by the bright/dark detection sensor 7 may cause a malfunction in which the illumination lamp 4 is turned on.

Furthermore, in the above-mentioned conventional example, the human body detection processing circuit in the control circuit 2 is operated even when the lighting lamp 4 is turned on, so the power consumption becomes more than necessary, and the battery-powered operation becomes unnecessary. If so, it works! There was a problem that the interval became short.

The present invention has been made in view of the above points, and its purpose is to change the brightness of the surroundings from bright to dark or from dark to dark.
To provide a lighting fixture that prevents an illumination lamp from being erroneously turned on even when the light changes to brightness, and that can control the operating time when driven by a battery.

[Means for Solving the Problems] The lighting equipment according to claim 1 of the present invention includes a human body detection sensor, a light/dark detection sensor that detects surrounding brightness and darkness, and control for blinking a lighting lamp based on the outputs of both detection sensors. circuit and 1
% of lighting equipment, the surrounding brightness is bright →
A suppression circuit is provided that temporarily suppresses lighting of the illumination lamp when it is dark or changes from dark to bright.

Further, the lighting fixture according to claim 2 includes a human body detection sensor;
A lighting device comprising a light/dark detection sensor that detects the brightness or darkness of the surroundings and a control circuit that blinks the lighting lamp based on the outputs of both detection sensors so that the lighting lamp can be turned on when the surroundings become dark, A second device that stops the operation of the human body detection processing circuit in the control circuit when the lighting lamp is turned on.
It is equipped with a control circuit.

[Function 1] The present invention is configured as described above, and according to claim 1, there is provided a lighting equipment in which a lighting lamp is controlled to blink based on the outputs of a human body detection sensor and a brightness detection sensor. , is equipped with a suppression circuit that temporarily suppresses lighting of the illumination lamp when the surrounding brightness changes from bright to dark or from dark to bright. Even if the light changes to brightness, the illumination lamp will not be turned on accidentally.

Further, in the second aspect of the invention, the illumination lamp is blinked based on the output of the human body detection sensor and the brightness detection sensor,
When the surroundings become dark, turn on the illumination lamp, r:1. In lighting fixtures that can be used to turn on the light, a second device that stops the operation of the human body detection processing circuit in the control circuit when the lighting lamp is turned on.
This system is equipped with a control circuit that prevents the human body detection processing circuit from operating unnecessarily and saves power, making it possible to extend the operating time when powered by batteries. There is.

[Embodiment] Figure @i shows an embodiment of the present invention, which includes a human body detection sensor 1, a light/dark detection sensor 7 that detects surrounding brightness, and a lighting lamp 4 based on the outputs of both detection sensors 1 and 7. In a lighting fixture similar to the conventional example, which is equipped with a control circuit 2 for blinking, lighting of the lighting lamp 4 is temporarily suppressed when the surrounding brightness changes from bright to dark or from dark to bright. A suppression circuit 8 is provided, and in the embodiment, the suppression circuit 8 includes a capacitor C9 charged from the operational amplifier power supply Vop via a resistor R5, and a diode D for blocking reverse current flowing from the transistor Q6. The collector output of transistor Q6 is applied to the bases of transistors Q and b via diode D.

The operation of the embodiment will be described below. Now, when the ambient brightness changes from bright to dark, the inverter I6 output of the light/dark detection sensor 7 becomes "L", the transistor Q is turned on, the operational amplifier power supply Vop is output, and the human body detection processing circuit is activated. Set to operational state. At this time, a noise signal is output from the amplification/detection circuit 2a due to the instability of the reference voltage of the operational amplifier OP2, but in the embodiment, the transistor Q6 of the suppression circuit 8 is connected to the resistor R1 and the capacitor C9. Since the transistor Qjb is turned off for a certain period of time, the base of the transistor Qjb is forcibly set to "H", and the alpha lighting of the illumination lamp 4 due to the noise signal is blocked. Therefore, when the ambient brightness changes from bright to dark, a malfunction in which the illumination lamp 4 is unnecessarily turned on as in the conventional example is prevented.

FIG. 2 shows another embodiment, in which the suppression circuit 8' is formed using a time constant circuit consisting of a capacitor C6 and a resistor R6, and a transistor Q, and a transistor Q7 is connected between the base and emitter of the transistor Q. For a certain period of time after the inverter ■6 output becomes L'', transistor Q7 is turned on to prevent the output of the amplification/detection circuit 2a from being input to the judgment control circuit 2b, thereby preventing malfunction. It performs the same operation as the circuit 6 to prevent the illumination lamp 4 from being turned on unnecessarily due to a noise signal.

FIG. 3 shows still another embodiment, in which a second suppression circuit 8 consisting of backflow blocking diodes D4-D5 is used in a lighting fixture provided with a suppression circuit 8'' similar to the embodiment of FIG.
'', and the operational amplifier power source Vop is input to the malfunction prevention circuit 6 via the diode D4.

Now, in this embodiment, the operation is similar to that of the embodiment in FIG. This prevents the illumination lamp 4 from being turned on unnecessarily.

FIG. 4 shows still another embodiment, which includes a human body detection sensor 1, a light/dark detection sensor 7 that detects ambient light and darkness, and a control circuit that blinks a lighting lamp 4 based on the outputs of both detection sensors 1 and 7. 2 and 14: in a lighting fixture which is capable of turning on the lighting lamp 4 when the surroundings become dark, the lighting device stops the operation of the human body detection processing circuit in the control circuit when the lighting lamp 4 is turned on. 2 control circuits 9 are provided, and the control circuit 9 of tJ2 is formed of a switching transistor Qs.

The operation of the embodiment will be described below. Now, when the inverter ■ output becomes H''' and the illumination lamp 4 is turned on, the switching transistor Q is turned on.

is turned on and the output of the inverter I6 is forcibly set to L'', so the operation of the crystal oscillator circuit of the human body detection processing circuit is stopped, and the operational amplifiers op, , op of the amplification and detection circuit 2a are turned on. Since the power supply to 2 is stopped and the human body detection processing circuit does not operate unnecessarily, power saving is achieved and operation is possible when using batteries as the drive power source. It is now possible to extend the time.

[Effects of the Invention J The present invention is configured as described above, and in claim 1, there is provided a lighting device in which a lighting lamp is controlled to flicker on and off based on the outputs of a human body detection sensor and a brightness detection sensor. The system is equipped with a suppression circuit that temporarily suppresses the lighting of the lighting lamp when the surrounding brightness changes from bright to dark or from dark to bright. This has the effect that the illumination lamp will not be accidentally turned on even when the situation changes from dark to bright.

Further, in the second aspect of the present invention, the illumination lamp is blinked based on the outputs of the human body detection sensor and the brightness detection sensor,
This is a lighting device that can turn on the lighting lamp when the surroundings become dark, and is equipped with a $2 control circuit that stops the operation of the human body detection processing circuit in the control circuit when the lighting lamp is turned on. Since the human body detection processing circuit is not operated unnecessarily to save power, there is an effect that the operable time when battery-powered can be extended.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram of one embodiment of the present invention, FIG. 2 is a circuit diagram of another embodiment, and FIG. 1143 is a circuit diagram of still another embodiment.
Figure JIJ4 is a circuit diagram of another embodiment, Figure 5 is a block circuit diagram of a conventional example, Figure 6 is a specific circuit diagram of the same as above, and Figure 7 is a circuit diagram of another embodiment.
From the drawings, FIG. 8 is an explanatory diagram of the same operation, FIG. 9(a) is a front view of the same, and FIG. 9(b) is a sectional view of the same. 1 is a human body detection sensor, 2 is a control circuit, 4 is a lighting lamp,
7 is a light/dark detection sensor, 8.8', 8'' is a suppression circuit. Agent Patent Attorney Ishi 1) Long 7 W, %-"-z
w w +ゝ′ ζ−,y
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Claims (2)

[Claims] (1) A lighting fixture comprising a human body detection sensor, a light/dark detection sensor that detects ambient light and darkness, and a control circuit that blinks a lighting lamp based on the outputs of both detection sensors,
A lighting device characterized by being provided with a suppression circuit that temporarily suppresses lighting of an illumination lamp when the surrounding brightness changes from bright to dark or from dark to bright. (2) Equipped with a human body detection sensor, a light/dark detection sensor that detects the brightness of the surrounding area, and a control circuit that blinks the lighting lamp based on the outputs of both detection sensors, so that the lighting lamp can be turned on when the surrounding area becomes dark. 1. A lighting device comprising a second control circuit that stops the operation of a human body detection processing circuit in the control circuit when the lighting lamp is turned on.