JPH0992472A - Nightlight - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a nightlight whose on time can be adjusted according to installation conditions although it is designed to be capable of turning on automatically when a human passes. SOLUTION: An incandescent lamp 5 emitting illuminating light to the front side and a heat ray sensor 43 for detecting heat rays radiated from human bodies present within a detecting area set ahead are enclosed in an apparatus main body. If the presence of a human within the detecting area is detected by the heat ray sensor 43 and a detection output rises, a control circuit 40 turns on the incandescent lamp 5 and, after a set period of time has elapsed from the fall of the detection output, turns off the incandescent lamp 5. The time from the fall of the detection output to the turning off of the incandescent lamp 5 can be adjusted by a variable resistor VR1 .

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a night light that lights up when a person approaches at night.

[0002]

2. Description of the Related Art Conventionally, there has been provided a luminaire called a night light which is arranged under a wall facing a corridor or the like to illuminate the feet. Turning on and off the night light is generally done by a manual switch,
This kind of lighting equipment can be achieved by turning it on with a manual switch, even if the purpose can be achieved if it is turned on only when a person passes by.
In the case where the light is turned off, the light may be turned on even when a person does not pass through, resulting in unnecessary power consumption.

Therefore, the present inventor previously proposed a night light in which a heat ray sensor for detecting a heat ray radiated from a human body is built in the instrument body so that the night light is turned on only when a person passes through.

[0004]

By the way, in general, it is only necessary to turn on the light when a person is passing, but the illumination range and the detection area of the heat ray sensor do not always match,
Also, since the output of the heat ray sensor is not always obtained during the passage of a person, it is necessary to keep the lighting state for some time even if the detection output generated when the person is detected by the heat ray sensor is stopped. There is. That is, after the detection output of the heat ray sensor is stopped, the timed operation is performed for a certain time, the lighting state is maintained during the timed operation, and the timed operation may be reset if the detection output is generated again during the timed operation. However, if the time of the timed operation is fixed, inconvenience may occur, such as the lighting time being too short, depending on the installation conditions.

The present invention has been made in view of the above reasons, and an object of the present invention is to make it possible to automatically turn on the light as a person passes by, but to set the lighting time depending on the installation conditions. It is to provide a night light that can be adjusted.

[0006]

According to a first aspect of the present invention, there is provided an instrument main body, a lamp for emitting illumination light to the front side of the instrument main body,
A heat ray sensor that detects the heat rays emitted from the human body existing in the detection area set in front of the instrument body, and the presence of a person in the detection area is detected by the heat ray sensor, and when the detection output rises, the lamp is turned on and detection is performed. A control circuit is provided which turns off the lamp after a lapse of a set time from the fall of the output, and a time setting unit which has an operation unit exposed on the front surface of the instrument body and which adjusts the set time in the control circuit by operating the operation unit.

According to this structure, the time during which the lamp is kept lit after the detection output of the heat ray sensor is stopped can be set by operating the operation section of the time setting section, so that a desired time can be set according to installation conditions and the like. Become. According to the invention of claim 2, in the invention of claim 1, a brightness sensor for detecting ambient illuminance is provided in the instrument body, and the control circuit of the heat ray sensor is provided when the ambient illuminance detected by the brightness sensor is equal to or more than a predetermined value. The lamp is kept off regardless of the detection output.

In this structure, since the lamp is turned on and off according to the ambient illuminance detected by the brightness sensor, the lamp is not turned on when the surroundings are bright, and wasteful power consumption can be suppressed. According to the invention of claim 3, an instrument main body, a lamp for emitting illumination light to the front side of the instrument main body, a heat ray sensor for detecting heat rays emitted from a human body existing in a detection area set in front of the instrument main body, A brightness sensor that detects the ambient illuminance, and when the ambient illuminance detected by the brightness sensor is below the set illuminance, the heat ray sensor detects the presence of a person in the detection area and turns on the lamp when the detection output rises. A control circuit that turns off the lamp after a lapse of a set time from the fall of the detection output, and a brightness setting unit that includes an operation unit exposed on the front surface of the instrument body and that adjusts the set illuminance by operating the operation unit are provided.

In this structure, the degree of ambient illuminance at which the detection output of the heat ray sensor is validated can be adjusted by the operation unit of the brightness setting unit, so that the lamp is turned on in accordance with the installation conditions. The illuminance can be adjusted. According to the invention of claim 4, an instrument main body, a lamp for emitting illumination light to the front side of the instrument main body, a heat ray sensor for detecting a heat ray emitted from a human body existing in a detection area set in front of the instrument main body, A brightness sensor that detects the ambient illuminance, and when the ambient illuminance detected by the brightness sensor is below a predetermined value, the heat ray sensor detects the presence of a person in the detection area and turns on the lamp when the detection output rises. Control circuit that instructs the lamp to be turned off after a set time has elapsed from the fall of the detection output, the state where the lamp is always connected to the power supply, and the state where the power supply is connected and the power supply follows the instructions of the control circuit. And a selection switch for selecting a state of not being connected to.

With this configuration, the selection switch can be used to select between a state in which the lamp is constantly turned on, a state in which the lamp is always turned off, and a state in which the lamp is automatically turned on and off according to the output of the heat ray sensor. Since it is provided in the instrument body, it is not necessary to provide another switch for performing this kind of operation, and it is possible to save space and labor for construction.

According to a fifth aspect of the invention, in the fourth aspect of the invention, the operating portion of the selection switch is exposed on the front surface of the instrument body. In this configuration, by operating the operation part of the selection switch exposed on the front surface of the instrument body, the lamp is constantly turned on, the lamp is constantly turned off, and the lamp is automatically turned on / off according to the output of the heat ray sensor. The operability is good because the state can be selected with the selection switch.

According to a sixth aspect of the present invention, in the first to fifth aspects of the present invention, the attachment body is standardized for an embedded wiring instrument that is partially embedded in the construction surface. It is characterized in that it is provided with a coupling part that can be coupled to the frame, and that the rear portion is embedded in the construction surface and that the front surface is exposed from the construction surface and is arranged on the construction surface. Therefore, a mounting frame or the like provided for wiring equipment can be diverted, and it is not necessary to separately prepare a mold for the mounting device, which leads to a reduction in manufacturing cost. Further, as the construction method, a method similar to that of the conventional wiring device can be adopted, it is not necessary for the construction company to learn a new technique, and an increase in education cost can be suppressed.

According to a seventh aspect of the present invention, there is provided an instrument main body having a blade that can be inserted into an outlet of a commercial power source, a lamp for emitting illumination light to the front side of the instrument main body, and a brightness sensor for detecting ambient illuminance. A secondary battery that is charged when connected to a commercial power source, a power supply switching unit that supplies power to the lamp using the secondary battery as a power source when the voltage from the commercial power source is no longer detected, and ambient illuminance when power is supplied from the commercial power source. When the lamp is turned on and the power is supplied from the secondary battery, the ambient illuminance is below the specified value regardless of the ambient illuminance and when the power is supplied from both the commercial power supply and the secondary battery. In this case, a switch is provided for selecting whether or not to turn on the lamp.

With this configuration, the lamp can be turned on when the commercial power source is cut off or when it is unplugged from the outlet,
Moreover, it is possible to select a state in which the lamp is turned on only when the ambient illuminance is lowered or a state in which the lamp is turned on regardless of the ambient illuminance, depending on the setting of the switch.
That is, when connected to an outlet, it is possible to suppress unnecessary power consumption because it is linked to the ambient illuminance.
In addition, if power is supplied from the secondary battery so that it is linked to the ambient illuminance, if the ambient illuminance is high even during a power outage, the secondary battery will not be discharged and unnecessary consumption of the secondary battery will not occur. Can be prevented.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION

(Embodiment 1) As shown in FIG. 2 and FIG.
Is composed of a box-shaped body 1A made of a synthetic resin molded article having high heat resistance and having an opening on one side, and a cover 1B attached to the opening of the body 1A. Body 1A and cover 1
B is a coupling claw 5 protruding from the rear surface on both sides of the cover 1B.
The instrument body 1 is constructed by engaging and fixing 6 and 57 into the coupling holes 58 and 59 provided in the body 1A.
The device main body 1 has a size that is approximately six times as large as the unit size of an embedded wiring device called a large square that is standardized in the JIS standard. That is, it corresponds to a size in which three wiring devices each having a unit size are arranged in two rows. Further, a locking claw 54 is formed as a connecting portion for connecting to the mounting frame 50.

On the inner bottom surface of the body 1A, a piece parallel to a side wall (a wall on the left front side in FIG. 2), which is a bottom wall when the instrument body 1 is attached to the wall surface, is attached at a predetermined interval. A space in which an L-shaped partition wall 2 composed of a piece parallel to a side wall (a wall on the right side in FIG. 2) which is sometimes the right side wall is integrally erected, and the internal space of the body 1A opens in a rectangular shape. Is divided into a lamp storage chamber 3A and a circuit board storage chamber 3B which is an L-shaped space.

A lamp socket 4 is provided in the lamp storage chamber 3A.
And an E12 type incandescent lamp 5 mounted in the lamp socket 4 are housed. As shown in FIG. 2, the lamp socket 4 has a shaft portion 11 on both ends in the upper end of one end, and is provided on an upper end portion of a pair of ribs 12 formed along one side wall of the lamp storage chamber 3A. Both end portions of the shaft portion 11 are supported in the bearing recess 13 so as to be able to move up and down. That is, the lamp socket 4
Can be tilted up and down between a position housed in the lamp housing chamber 3A and a position where a part of the lamp housing chamber 3A projects toward the front side of the body 1A. The lamp socket 4 is centered on the part 11 and the body 1
A can be projected to the front side.
In addition, a support spring 15 bent in a substantially L shape is provided in the lamp housing chamber 3A with a fixing screw 14 on a side of the lamp socket 4.
It has been fixed using. When the lamp socket 4 is housed in the lamp housing chamber 3A, the tip of the support spring 15 elastically contacts the side surface of the lamp socket 4 to prevent the lamp socket 4 from rotating unnecessarily. Lamp socket 4
The lead wire 23 connected to is housed in the groove 31 provided in the base portion 30 formed at the bottom of the lamp housing chamber 3A, and is also housed in the circuit board housing chamber 3B through the groove 32 formed in the partition wall 2. be introduced.

The circuit board storage chamber 3B is provided with terminal storage chambers 16a and 16b at both ends on one side, and each terminal storage chamber 16 is provided.
A terminal plate 17, a lock spring 18, and a release button 1 are provided in a and 16b.
A pair of quick-connect terminals consisting of 9 are housed respectively. Each quick-connect terminal is connected to the terminal plate 17 by the elastic force of the lock spring 18.
The electric wire is clamped between the lock spring 18 and the lock spring 18, and the lock button 18 is bent by the release button 19 to release the clamped state of the wire. Each terminal board 17 is soldered by inserting the projecting piece 17a protruding upward in FIG. 2 into the insertion hole 20 provided in the circuit board 6 and electrically connected to the circuit formed in the circuit board 6. . As shown in FIG. 6, an operation hole 22 for operating the wire insertion hole 21 and the release button 19 corresponding to each quick-connect terminal is opened in the bottom wall of each terminal storage chamber 16a, 16b. The quick-connect terminal in one terminal storage chamber 16a constitutes the power supply terminal 33 shown in FIG. 1, and the quick-connect terminal in the other terminal storage chamber 16b is a changeover switch for selecting continuous lighting or automatic lighting shown in FIG. A terminal 34 for connecting SW ₁ is configured.

On the circuit board 6, the circuit elements that form the circuit shown in FIG. 1 are mounted, and the lead wires 23 from the lamp socket 4 are connected thereto. This circuit board 6 is a circuit board storage chamber 3
The circuit board housing chamber 3 is placed on the stepped portion 3C formed at the opening edge of the circuit board B and passes through the notch 8 formed at the side edge of the circuit board 6.
It is fixed to the body 1A by using a fixing screw 7 that is screwed into a hole 10 provided in a rib 9 formed in B.

In the circuit formed on the circuit board 6, as shown in FIG. 1, both ends of the AC power supply AC connected to the power supply terminal 33 are turned off when the lamp is replaced by a power cutoff switch S.
A diode bridge DB is connected through W ₂ , a diode D ₁ , a current limiting resistance R ₁ and an operation indicator LED ₁ composed of a light emitting diode to connect the diode D ₁ and the current limiting resistance R _1.
An incandescent lamp 5 is connected in parallel to the series circuit of ₁ and the operation indicator LED ₁ . The diode bridge DB has a switch element S composed of a thyristor connected in parallel between both output terminals. The incandescent lamp 5 is turned on by triggering the switch element S to turn on by the control circuit 40. It connects with AC power supply AC through the element S and makes it light.

The pulsating current half-wave rectified by the diode D ₁ is 3
It is converted into a stable predetermined DC voltage by the power supply circuit unit 41 including a terminal regulator IC and the like. Power supply circuit section 41
Supplies power to the control circuit 40, and
Brightness sensor 4 consisting of ₂ and CdS to detect ambient illuminance
The series circuit with 2 is connected. The control circuit 40 monitors the voltage across the brightness sensor 42, and monitors the ambient illuminance by the voltage across the brightness sensor 42. That is, when the ambient illuminance is high (bright), the voltage across the brightness sensor 42 decreases, so that the ambient illuminance can be detected according to the voltage across the brightness sensor 42. In addition, a heat ray sensor 43 including a pyroelectric infrared sensor is connected to the control circuit 40, and when a heat ray from a human body enters the field of view of the heat ray sensor 43, a brightness is generated when a detection output is generated from the heat ray sensor 43. When the ambient illuminance detected by the sensor 42 is less than or equal to a predetermined value, the control circuit 40 validates the detection output and gives the switch element S a trigger signal. Further, a time constant circuit 44 is connected to the control circuit 40, and the trigger signal to the switch element S is stopped after a fixed time set by the time constant circuit 44 after the detection output is stopped in the control circuit 40. ing. The time constant circuit 44 is provided with a variable resistor VR ₁ capable of changing the time constant as a time setting unit. A CR circuit 45 that determines the oscillation frequency of the internal clock oscillation circuit is also connected to the control circuit 40.

On the other hand, the terminal 34 is connected to the input end of the diode bridge DB, and the changeover switch SW ₁ described above can be connected between both terminals 34. Therefore,
When the changeover switch SW ₁ is turned on, the incandescent lamp 5 is connected to the AC power source AC via the changeover switch SW ₁ and lights up, and the incandescent lamp 5 can be continuously turned on regardless of whether the switch element S is on or off. Further, if the changeover switch SW ₁ is turned off, the incandescent lamp 5 can be automatically turned on / off in accordance with turning on / off of the switch element S under the control of the control circuit 40.

By the way, the heat ray sensor 43, the brightness sensor 42, the operation indicator LED ₁ and the variable resistor VR ₁ are shown in FIG.
As shown in FIG. 5, the power switch SW ₂ is arranged on the surface of one side of the circuit board 6, and the power cutoff switch SW ₂ is arranged on the surface of the other side of the circuit board 6. When the cover 1B is attached to the body 1A, the cover 1B is attached. The light receiving window 28 provided on the detection surface of the heat ray sensor 43 and the operation indicator LED provided near the heat ray sensor 43.
A light receiving window 27 provided separately on the cover 1B, facing the light emitting portion ₁
The light receiving surface of the brightness sensor 42 is exposed to, and the operation portion of the variable resistor VR ₁ is inserted into the insertion hole 25 provided in the cover 1B.
A switch S for shutting off the power is provided in the operation hole 26 provided in the cover 1B.
The W ₂ actuator is exposed.

Here, the cover 1B is provided with a projecting base 51 that fits into the central opening of the mounting frame 50 made of synthetic resin or the mounting frame made of metal, and shoulders 52 projecting to both side surfaces of the projecting base 51. And a locking claw 5 which has a shoulder 52 and which is detachably engaged with a locking hole 53 provided in a synthetic resin mounting frame 50.
Two pairs of four are provided. Also, the stand 51
Two locking recesses 55 into which the locking portions of the metal mounting frame are fitted are provided at the bases on both side surfaces of the mounting frame 50, and the mounting frame 50 is made of synthetic resin, similar to general embedded wiring equipment. (Or a metal mounting frame) can be used to mount the switch box or mounting hole buried in the wall surface.

An opening window 60 corresponding to the lamp accommodating chamber 3A of the body 1A is provided on the protrusion 51 of the cover 1A. The opening window 60 is made of a translucent resin and has a shade 61 shown in FIG. Is detachably fitted, and the illumination light of the incandescent lamp 5 goes out through the shade 61. The shade 61 is a locking claw 6 protruding from the back surface of one side.
2 is engaged with a locking hole 63 opened on the corresponding inner surface of the opening window 60, and a locking projection 68 provided on the outer surface of the other side portion of the shade 61 is locked on the corresponding inner surface of the opening window 60. It is fixed to the cover 1B by elastically engaging with a recess (not shown). To remove the shade 61 from the cover 1B, insert a jig such as the tip of a minus driver into the removal groove 64 provided on the outer surface of the other side of the shade 61 through the groove 65 provided at the opening edge of the opening window 60. The jig is removed and locked in the groove 64, and the jig is used as a lever to lift the other side of the shade 61 to separate the locking projection 63 from the locking recess. In this way, by removing the shade 61, the incandescent lamp 5 in the lamp storage chamber 3A can be replaced.

On the back surface of one end of the shade 61, the operation hole 2 provided on the cover 1B when it is attached to the opening window 60.
Switch SW for cutting off the power inside body 1A inserted in 6
Press the _second actuator power cut-off switch SW ₂
The push-in projection 66 for turning on is projected. Therefore, the power cutoff switch SW ₂ is turned off in the state where the shade 61 is removed, and in this state, the incandescent lamp 5 is not supplied with power, so that the danger of electric shock is prevented and the incandescent lamp 5 is not turned on unnecessarily. . See also Sade 6
A pressing projection 67 for pressing the front surface of the lamp socket 4 in the lamp storage chamber 3A of the body 1A to fix the lamp socket 4 in a fixed position is also provided on the body 1.

The light receiving windows 27 and 28 and the insertion hole 2 described above.
5 is open to the protrusion 51 of the cover 1B, and the light receiving window 2
The light receiving cover 7 is attached to the inside of the cover 1B.
The lens unit 71 of 0 is fitted, and the lens unit 71 collects external light on the light receiving surface of the brightness sensor 42. An optical block 76 including a lens body 73 integrally formed with a large number of condenser lenses and a mirror support body 75 provided with a reflection mirror 74 is mounted on the light receiving window 28.

The mirror support 75 has a rectangular frame shape, and a V-shaped reflection mirror 74 is supported and arranged above the center of the opening. On the other hand, the lens body 73 is a box-shaped synthetic resin molded product having inclined surfaces on both sides and an open rear surface, and a condenser lens is integrally formed on the inclined surface and the front surface. The lens main body 73 is fitted into the light receiving window 28 from the back side, and the peripheral edge of the lens main body 73 is provided in a concave portion (not shown) provided inside a projecting wall 77 formed to project at the front surface opening of the light receiving window 28. Abut the mirror support 75 in this state
The reflecting mirror 74 is inserted into the lens body 73 from the rear side and the upper end of the reflecting mirror 74 is brought into contact with the lens body 73 to press the lens body 73.
The lens main body 73 and the mirror indicating band 75 are fixed to the cover 1B by fixing the mirror support body 75 to the back surface of the cover 1B with 9.

Here, each condensing lens of the lens body 73 has an optical axis passing through the effective detection field of view of the heat ray sensor 43, and focuses on the detection surface of the chip of the heat ray sensor 43. On the other hand, the reflection mirror 73 reflects heat rays that have not passed through the detection effective visual field of the heat ray sensor 43 among the heat rays that have passed through the condenser lens to pass through the detection effective visual field of the heat ray sensor 43, and condenses them on the light receiving surface of the heat ray sensor 43. It has the function of expanding the detection area of the heat ray sensor 43. That is, by combining the reflection mirror 74 and the lens body 73, the heat ray can be condensed in a wide angle even if the amount of protrusion of the cover 1B toward the front surface is reduced, and the instrument body 1
The heat ray from a person who is far from the installation position can be focused on the heat ray sensor 43, and the detection distance can be extended.

By the way, on the back surface of the protrusion 51 of the cover 1B, when the body 1A is adhered, the portion which comes into contact with the upper end of the partition wall 2 to accommodate the heat ray sensor 43 and the lamp accommodating chamber 3A.
There is a double-structured partition wall 80 that blocks the space between
The partition wall 80, the partition wall 2 of the body 1A, and the circuit board 6 are insulated so that heat from the incandescent lamp 5 does not affect the heat ray sensor 42.

In order to release the heat of the incandescent lamp 5,
An air discharge hole 81 that communicates the inside and the outside is formed on the side wall of the lamp storage chamber 3A that is an upper wall when the fixture body 1 is arranged on the wall surface, and is the rear wall of the body 1A that is the lamp storage chamber 3A.
An air inflow hole 82 (see FIG. 6) is opened in the lower part of A. That is, the outside air that is colder than the air inflow hole 82 is cooled by the convection generated by the heat generation of the incandescent lamp 4.
The temperature rise of the lamp housing chamber 3A is suppressed by causing the hot air to flow into the air discharge port A and to flow out the hot air from the air discharge hole 81.

At the time of actual construction, the device main body 1 may be attached to the attachment frame 50 and the attachment frame 50 may be attached to a switch box or the like, and the makeup cover 83 is attached to the front side of the attachment frame 50. It The decorative cover 83 is attached to the front surface side of the mounting frame 50 by engaging the locking claws 84 protruding from the rear surface of the peripheral portion with the locking portions 85 of the mounting frame 50. Then, in the night light in the present embodiment, when the ambient light is below a predetermined value and is dark and the heat ray from the human body is detected by the heat ray sensor 43 and a detection signal is generated, the control circuit 40 turns on the switch element S. The incandescent lamp 5 is connected to the AC power supply AC through the diode bridge DB and the switch element S to be turned on. In addition, the heat ray sensor 43
When the detection signal from the control circuit 40 stops, the control circuit 40 switches the switch element S after the elapse of a certain time set by the time constant circuit 44.
Is turned off to stop the power supply to the incandescent lamp 5 and turn off the light. Here, the time from the stop of the detection output to turn off the incandescent lamp 5 is adjustable by a variable resistor VR _1, since the operation portion of the variable resistor VR ₁ is exposed on the front side of the equipment main body 1, installed The time can be adjusted according to the conditions.

(Embodiment 2) This embodiment is the same as Embodiment 1.
The appearance is similar, but the time constant of the time constant circuit 44 is adjusted.
Variable resistor VR₁Instead of the light, as shown in FIG.
A variable resistor VR as a brightness setting unit is provided on the ruggedness sensor 42.
₂Are connected in series. This variable resistor VR ₂Adjust
Then, since the voltage across the brightness sensor 42 changes, heat
The ambient illuminance when enabling the detection output of the line sensor 43
It becomes possible to adjust.

That is, although the ambient illuminance when the incandescent lamp 5 is turned on is fixed in the first embodiment, the incandescent lamp 5 may be set depending on the installation conditions and the user's feeling.
It may be required to adjust the ambient illuminance when lighting. In this embodiment, this requirement is satisfied by providing the variable resistor VR ₂ . Variable resistor V
Since R ₂ is mounted on the circuit board 6 by replacing it with the variable resistor VR ₁ of the first embodiment, the appearance is similar to that of the first embodiment, but this embodiment does not have a function of adjusting the time constant. . Other configurations and operations are the same as those of the first embodiment.

(Embodiment 3) This embodiment is shown in FIG.
So that the variable resistor VR₁, VR₂Without and switch
Switch SW₁Although the terminal 34 for connecting
The incandescent lamp 5 is automatically activated according to the detection output of the heat ray sensor 43.
To turn on / off the light, and to turn on the incandescent lamp 5 at all times
The state of turning on and the state of turning off the incandescent lamp 5 at all times
Selection switch SW to select_ThreeIs provided. That is,
Select switch SW at one end of incandescent lamp 5_ThreeCommon contact of
Connected and continuous lighting contact r₁To one power supply terminal 33
Continuing, automatic lighting contact r₂Of diode bridge DB
Contact r that is connected to one input terminal and is continuously turned off_ThreeNowhere
Not connected. That is, contact point r₁If you select
Changeover switch SW in state 1₁Same as when the
Therefore, the incandescent lamp 5 has a brightness sensor 42 and a heat ray sensor.
Regardless of the output of the sensor 44 ₂Choose
If selected, the changeover switch SW in the first embodiment₁Off
When the ambient illuminance is below a specified value,
When the detection output of the heat ray sensor 43 is obtained, the incandescent lamp 5
Lights up. Also, contact point r_ThreeIncandescent lamp 5 if you select
Power is not supplied to the brightness sensor 42 and the heat ray sensor.
The incandescent lamp 5 continues to be turned off regardless of the output of 43.

Although the basic appearance is similar to that of the first embodiment, since the variable resistor VR ₁ does not exist and the selection switch SW ₃ is provided, as shown in FIG. 9 and FIG.
Instead of the insertion hole 25, a window hole 24 having a rectangular opening is formed in the protrusion 51 of the cover 1B. Select switch SW ₃
Is a slide switch, and a knob 35 for operating the selection switch SW ₃ is held between the rear surface of the peripheral portion of the window hole 24 and the selection switch SW ₃ . A part of the knob 35 protrudes from the window hole 24, and if necessary, the selection switch SW
_{The 3} is easy to operate. Further, since the tool body 1 is provided with the selection switch SW ₃ , it is not necessary to provide the changeover switch SW ₁ having the same function to the outside as in the first embodiment, which saves the labor and saves the space. . Other configurations and operations are the same as those of the first embodiment.

(Embodiment 4) As shown in FIG. 11, the present embodiment is a night light which does not have a heat ray sensor and turns on and off the incandescent lamp 5 only by the output of the brightness sensor 42. An example is a nightlight that is used by being inserted into an outlet and can be used to power the incandescent lamp 5 by the built-in secondary battery B when the AC power supply AC is interrupted, and can also be used as a flashlight if removed from the outlet. To do.

The night light in this embodiment is shown in FIG.
As shown in FIG. 2, a device body 100 having a rectangular parallelepiped shape is provided, and on the back surface of the device body 100, a pair of blades 101 that can be inserted into an outlet are provided in a protruding manner. A lens body 1 for extracting light from the incandescent lamp 5 is provided on the front surface of the fixture body 100.
02 is detachably attached. The lens body 102 has an engaging claw (not shown) protruding rearward, and the instrument body 10
It is connected to the instrument main body 100 by engaging the engaging claw with 0. Further, by pushing the projections 103 provided on both side surfaces of the lens body 102, the engaging claws and the instrument main body 100 are pressed.
And the lens body 1 is released from the instrument body 100.
02 can be removed.

A light receiving window 104 for introducing outside light into the brightness sensor 42 is formed on the side surface (upper surface when plugged into the outlet) of the instrument main body 100. In addition, as shown in FIG.
In addition to the above, the circuit shown in FIG.
When the switch is removed, the operation portion of the switch SW ₄ which will be described later is exposed.

As shown in FIG. 11, the circuit of the night light in this embodiment is connected to an AC power supply (commercial power supply) AC by inserting a blade 101 into an outlet, and after the AC power supply AC is stepped down by a transformer T. The power of the internal circuit is obtained by rectifying with the diode bridge DB ₂ and smoothing with the smoothing capacitor C ₁ . The brightness sensor 42 made of CdS has a series circuit with a resistor R ₃ connected to both ends of a smoothing capacitor C ₁ via a switch SW ₄ . The base of the transistor Q ₁ is connected to the connection point between the brightness sensor 42 and the resistor R ₃ and the transistor Q ₁
Is connected between the base and emitter of the transistor Q ₂ . The base of the transistor Q ₂ is
It is connected to the positive electrode of the smoothing capacitor C ₁ through a diode D ₄ , a Zener diode ZD _1, etc. If the voltage across the smoothing capacitor C ₁ is above a predetermined voltage, the Zener diode ZD ₁ becomes conductive and forward biases the transistor Q _2. give. Here, the transistor Q ₁ is if turned on, the base of the transistor Q ₂ - because the emitter is turned through the transistor Q _1, the transistor Q ₂ is turned off. That is, when the ambient illuminance detected by the brightness sensor 42 is less than or equal to a predetermined value and the resistance value of the brightness sensor 42 is high, the transistor Q ₂ is turned on and the incandescent light passes through the diode D ₃ and part of the diode bridge DB. Power is supplied to the lamp 5, and the incandescent lamp 5 is turned on.

A state in which the blade 101 is inserted into an outlet
If the voltage of the AC power supply AC is normal at
Judge DB₂Output is diode D_FourThrough secondary battery B
Also used for charging. By the way, smoothing capacitor C
₁The voltage across both ends of the resistor R_Four, R_FiveDivided by the tiger
Register Q_ThreeApplied to the base of. This transi
Star Q_ThreeThe collector-emitter of is a capacitor C₂And
Anti-R₆Is connected in parallel to the series circuit of₂When
Resistance R₆The series circuit with is resistor R₇To the secondary battery B via
It is connected. Capacitor C₂And resistance R₆Connection point with
Is from the secondary battery B to the transistor Q. ₂Give a bias to
Eruthyristor S₂Transistor connected to the gate of
Q_ThreeIs turned off, the capacitor C₂Through secondary battery
The current flowing from B causes thyristor S₂Turn on
It has become. That is, the voltage of the AC power supply AC drops
And transistor Q_ThreeTurns off, the thyristor S₂
Turned on and transistor Q₂To conduct. Zena
-Diode ZD₁Is on, the transition
Star Q_FourSince the base potential of transistor Q is low, transistor Q_FourHa
And is inserted between the secondary battery B and the incandescent lamp 5.
Transistor Q_FiveIs also off, but AC power supply AC
Voltage drops and Zener diode ZD₁Does not conduct
Then, the transistor Q_FourThyristor S₂Through
Forward biased, transistor Q_FourAnd transition
Star Q_FiveTurns on. In other words, for incandescent lamp 5
Power can be supplied from the secondary battery B.

Also, the thyristor S₂Thyristor S₁
Are connected in parallel, and this thyristor S ₁The gate of the switch
Ji SW_FiveIs connected to the positive electrode of the secondary battery B via
Ji SW₆Is connected to the negative electrode of the secondary battery B via.
Therefore, the switch SW_FiveTurn on, Siris
TA S₁Is turned on and power can be supplied to the incandescent lamp 5.
Switch SW₆Turn on the thyristor S₁But
The power turns off and the power supply to the incandescent lamp 5 is stopped. here,
Switch SW_Five, SW₆Is turned on only during pressing operation
The operation part is provided on the upper part of the instrument main body 100.
Have been. If the voltage of the AC power supply AC is normal and the Zener
-Diode ZD₁Is on, the transition
Star Q₂Is the smoothing capacitor C₁Controlled by the voltage of
Switch SW_Five, SW₆The operation of becomes invalid.

Further, the switching contacts a and b of the switch SW ₄ described above are respectively connected to both ends of the diode D ₄ , and the common contact of the switch SW ₄ is the brightness sensor 42.
It is connected to the. Then, the switch SW ₄ contacts the contact a.
When connected to the side, the output of the brightness sensor 42 becomes effective only when the power is supplied from the AC power supply AC, and when the appliance body 100 is disconnected from the outlet, the incandescent light bulb 4 is turned on by the switches SW ₅ and SW ₆ .・ You can turn off the lights. Further, regardless of the ambient illuminance, the incandescent lamp 5 is turned on by the power supply from the secondary battery B when the voltage of the AC power supply AC drops, such as during a power failure.

On the other hand, when the contact b of the switch SW ₄ is selected, the brightness sensor 42 is energized from both the AC power supply AC and the secondary battery B, so that when the voltage of the AC power supply AC drops, such as during a power failure. Also, if the ambient illuminance does not decrease, the incandescent lamp 5 does not turn on, and even if the switch SW ₅ is operated with the ambient light removed, the incandescent lamp 5 does not turn on unless the ambient illuminance is low. That is, when power is supplied from the secondary battery B to the incandescent lamp 5, it can be selected by the switch SW ₄ whether to turn on the light according to the ambient illuminance or to turn on the light regardless of the ambient illuminance.

[0045]

According to the invention of claim 1, the instrument body, the lamp for emitting illumination light to the front side of the instrument body, and the heat ray emitted from the human body existing in the detection area set in front of the instrument body are detected. A heat ray sensor, a control circuit that turns on the lamp when the presence of a person in the detection area is detected by the heat ray sensor and the detection output rises, and turns off the lamp after a set time from the fall of the detection output, and the instrument main body A time setting unit that has an operation unit exposed on the front surface and that adjusts the set time in the control circuit by operating the operation unit.The time setting unit determines the time for which the lamp is continuously lit after the detection output of the heat ray sensor is stopped. Since it can be set by operating the operation unit, there is an advantage that a desired time can be set according to installation conditions and the like.

According to a second aspect of the present invention, a brightness sensor for detecting the ambient illuminance is provided in the instrument body, and the control circuit is involved in the detection output of the heat ray sensor when the ambient illuminance detected by the brightness sensor is a predetermined value or more. Instead, the lamp is kept off, and the lamp is turned on and off according to the ambient illuminance detected by the brightness sensor, so the lamp is not turned on when the surroundings are bright and wasteful power consumption is suppressed. There is an advantage that you can.

According to a third aspect of the present invention, an instrument body, a lamp for emitting illumination light to the front side of the instrument body, and a heat ray for detecting a heat ray emitted from a human body existing in a detection area set in front of the instrument body. The sensor, the brightness sensor that detects the ambient illuminance, and the lamp when the heat ray sensor detects the presence of a person in the detection area and the detection output rises when the ambient illuminance detected by the brightness sensor is less than or equal to the set illuminance. And a brightness setting section for adjusting the set illuminance by operating the operation section, which includes a control circuit for turning on the lamp and turning off the lamp after a lapse of a set time from the fall of the detection output, and an operation section exposed on the front surface of the instrument body. The operating conditions of the brightness setting unit can be adjusted by adjusting the operation output of the heat ray sensor when the ambient illuminance becomes high. There is an advantage that it is possible to adjust the illuminance of lighting the lamp if etc.. A fourth aspect of the present invention is an instrument body, a lamp that emits illumination light to the front side of the instrument body, and a heat ray sensor that detects a heat ray emitted from a human body existing in a detection area set in front of the instrument body. A brightness sensor that detects the ambient illuminance, and when the ambient illuminance detected by the brightness sensor is below a predetermined value, the heat ray sensor detects the presence of a person in the detection area and turns on the lamp when the detection output rises. Control circuit that instructs the lamp to be turned off after a set time has elapsed from the fall of the detection output, the state where the lamp is always connected to the power supply, and the state where the power supply is connected and the power supply follows the instructions of the control circuit. It is provided with a selection switch for selecting a state in which the lamp is not connected to the lamp. You can select whether to turn on / off the light with a selection switch, and since the selection switch is provided on the instrument body, it is not necessary to provide another switch for performing this type of operation, saving space. Moreover, there is an advantage that labor saving of the construction becomes possible.

According to the invention of claim 5, the operating portion of the selection switch is exposed on the front surface of the instrument body, and the lamp is always turned on by operating the operating portion of the selection switch exposed on the front surface of the instrument body. It is possible to select a state, a state in which the lamp is always turned off, and a state in which the lamp is automatically turned on and off according to the output of the heat ray sensor with a selection switch, which has good operability.

According to a sixth aspect of the present invention, the instrument main body is provided with a coupling portion that can be coupled to a mounting frame standardized for an embedded wiring instrument that is partially embedded in a construction surface and is constructed. The rear part is embedded in the surface and the front surface is exposed from the construction surface, and it is placed on the construction surface.The mounting frame provided for wiring equipment can be diverted, and the metal for the mounting device can be used. There is no need to create a separate mold, which leads to a reduction in manufacturing costs. Further, as the construction method, a method similar to that of the conventional wiring device can be adopted, it is not necessary for the construction company to learn a new technique, and an increase in education cost can be suppressed.

According to a seventh aspect of the present invention, there is provided an instrument main body having a blade which can be inserted into an outlet of a commercial power source, a lamp for emitting illumination light to the front side of the instrument main body, and a brightness sensor for detecting ambient illuminance. A secondary battery that is charged when connected to a commercial power source, a power supply switching unit that supplies power to the lamp using the secondary battery as a power source when the voltage from the commercial power source is no longer detected, and ambient illuminance when power is supplied from the commercial power source. When the lamp is turned on and the power is supplied from the secondary battery, the ambient illuminance is below the specified value regardless of the ambient illuminance and when the power is supplied from both the commercial power supply and the secondary battery. A switch is provided to select whether or not the lamp should be turned on when the power is turned on, and the lamp can be turned on when the commercial power source is cut off or when the power is unplugged. Depending ambient illuminance can be selected and a state of turning on the lamp irrespective of the state and the surrounding illuminance to light only lamp when dropped. That is, when connected to an outlet, it is possible to suppress unnecessary power consumption because it is linked to the ambient illuminance. In addition, if power is supplied from the secondary battery so that it is linked to the ambient illuminance, if the ambient illuminance is high even during a power outage, the secondary battery will not be discharged and unnecessary consumption of the secondary battery will not occur. Can be prevented.

[Brief description of drawings]

FIG. 1 is a circuit diagram showing a first embodiment.

FIG. 2 is an exploded perspective view showing the first embodiment.

FIG. 3 is an exploded perspective view showing the first embodiment.

FIG. 4 is a front view of the first embodiment.

FIG. 5 is a side view of the first embodiment.

FIG. 6 is a rear view of the first embodiment.

FIG. 7 is a circuit diagram showing a second embodiment.

FIG. 8 is a circuit diagram showing a third embodiment.

FIG. 9 is an exploded perspective view showing a third embodiment.

FIG. 10 is an exploded perspective view showing a third embodiment.

FIG. 11 is a circuit diagram showing a fourth embodiment.

FIG. 12 is a perspective view of a fourth embodiment.

FIG. 13 is a perspective view of a state in which a lens body according to the fourth exemplary embodiment is removed.

[Explanation of symbols]

1 Instrument main body 5 Incandescent lamp 40 Control circuit 42 Brightness sensor 43 Heat ray sensor VR ₁ Variable resistor VR ₂ Variable resistor

Claims (7)

[Claims] 1. A device main body, a lamp for emitting illumination light to the front side of the device main body, a heat ray sensor for detecting a heat ray emitted from a human body existing in a detection area set in front of the instrument main body, and a heat ray sensor. Detects the presence of a person in the detection area and turns on the lamp when the detection output rises, and turns off the lamp after a set time from the fall of the detection output, and the operation unit exposed on the front of the instrument body. A night light, comprising: a time setting unit that adjusts the set time in the control circuit by operating an operation unit. 2. A brightness sensor for detecting the ambient illuminance is provided in the instrument body, and the control circuit turns off the lamp regardless of the detection output of the heat ray sensor when the ambient illuminance detected by the brightness sensor is a predetermined value or more. 2. The night light according to claim 1, wherein 3. An instrument main body, a lamp for emitting illumination light to the front side of the instrument main body, a heat ray sensor for detecting a heat ray emitted from a human body existing in a detection area set in front of the instrument main body, and an ambient illuminance. When the presence of a person in the detection area is detected by the heat ray sensor when the ambient illuminance detected by the brightness sensor is below the set illuminance and the detection output rises, the lamp is turned on and the detection output And a brightness setting section for adjusting the set illuminance by operating the operation section, and a control circuit for turning off the lamp after a lapse of a set time from the fall of Night light to do. 4. An instrument main body, a lamp for emitting illumination light to the front side of the instrument main body, a heat ray sensor for detecting a heat ray emitted from a human body existing in a detection area set in front of the instrument main body, and an ambient illuminance. When the ambient light detected by the brightness sensor and the ambient temperature detected by the brightness sensor is less than a predetermined value, the heat ray sensor detects the presence of a person in the detection area and turns on the lamp when the detection output rises. Control circuit that instructs to turn off the lamp after the set time has elapsed from the fall of the detection output, the state where the lamp is always connected to the power supply and the state where the lamp is connected to the power supply and the power supply is connected according to the instruction of the control circuit A night light, comprising: a selection switch for selecting a non-operation state. 5. The night light according to claim 4, wherein the operation portion of the selection switch is exposed on the front surface of the instrument body. 6. The instrument body includes a coupling portion that can be coupled to a mounting frame that is standardized for an embedded wiring instrument that is partially embedded in a construction surface, and a rear portion is embedded in the construction surface. The night light according to claim 1, wherein the night light is arranged on the construction surface such that the front surface is exposed from the construction surface. 7. A device main body provided with a blade that can be inserted into an outlet of a commercial power source, a lamp for emitting illumination light to the front side of the device main body, a brightness sensor for detecting ambient illuminance, and a commercial power source. The rechargeable battery is charged during operation, the power supply switching unit that supplies power to the lamp using the rechargeable battery as the power source when the voltage from the commercial power supply is no longer detected, and the ambient illuminance is below the specified value when the power is supplied from the commercial power supply. When the power is supplied from the secondary battery, the lamp is turned on regardless of the ambient illuminance when the lamp is lit regardless of the ambient illuminance, and when the ambient illuminance is less than or equal to the specified value when power is supplied from either the commercial power source or the secondary battery. A night light, which is provided with a switch for selecting a lighting state.