JP3363817B2 - Light bulb-type fluorescent lighting equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an illuminating device using a fluorescent lamp having a common base with an incandescent lamp.

[0002]

2. Description of the Related Art Fluorescent lamps having a common base with incandescent lamps have been developed, and because of their small current consumption, they have been prized for their energy saving. Although the conventional bulb-type fluorescent lamp had the same base as the incandescent bulb, the size of the lamp body was significantly different from that of the incandescent bulb, so they were not confused with each other. With the development of a lamp whose size is almost the same as that of an incandescent lamp, there is an increasing risk of confusion between the two.

[0003]

For example, the actual power consumption of a bulb-type fluorescent lamp treated as a 60 W class is 14 W, which is 1/4 or less of the power consumption of an incandescent bulb having an equivalent light quantity. Therefore, even if the incandescent light bulb is used and the light bulb type fluorescent lamp is replaced, no problem occurs. However, when an incandescent light bulb is attached to an illuminating device developed for a compact fluorescent lamp, an unexpected situation may occur. that is,
In the lighting device developed for the light bulb type fluorescent lamp, for example, in a lighting device using a 60 W class light bulb type fluorescent lamp, the shade is designed small in consideration of the heat generation amount of about 14 W and the distance to the lamp is shortened. This is because the shade material often has low heat resistance. Also, with a stand etc. using a bulb-type fluorescent lamp, there is no particular problem even if a piece of cloth is hung on the shade,
When the lamp is replaced with an incandescent lamp, if the user does not notice this or does the same without thinking that there is no particular problem, it causes a fire and is extremely dangerous.

Therefore, the first problem to be solved by the present invention is that even if an incandescent light bulb of the same class as the fluorescent light that is expected to be received in the receiver of the lighting device for the light bulb type fluorescent light is inserted, the light is turned on. Secondly, when the incandescent light bulb is removed and the light bulb type fluorescent lamp is inserted, the light is automatically turned on.

[0005]

In order to solve the above-mentioned first problem, according to the present invention, the lamp flows to a position where it is connected in series with the lamp on the receiving side into which the cap of the lamp is inserted. An incandescent light bulb having a wattage greater than or equal to the wattage expected to be received is provided with a control circuit provided between the current detection means and the circuit interruption means together with the current detection means for detecting the current and the circuit interruption means. When a certain high wattage light bulb is inserted, the control circuit controls the circuit breaking means by the output signal of the current detecting means so that the large wattage light bulb is received by the large wattage light bulb. Provided is a light bulb type fluorescent lamp illuminating device, which is characterized in that it is not permanently turned on while being inserted.

Further, in order to solve the above-mentioned second problem, according to the present invention, a weak current can be passed through the lamp in parallel with the circuit breaking means when the circuit breaking means is in the breaking state. Further, a weak current detection circuit capable of detecting the weak current is connected, the control circuit is provided with a function of receiving an output signal of the weak current detection circuit, and the weak current detection circuit has a large wattage bulb. When detecting a weak current flowing through the control circuit, the control circuit keeps the circuit breaking means in the cut off state, and when the weak current flowing through the weak current detecting circuit disappears when the high wattage light bulb is removed, the circuit breaking means is cut off. There is provided a light bulb type fluorescent lamp illuminating device characterized in that the state is restored.

[0007]

1 is a block diagram showing a first embodiment of the present invention. In FIG. 1, 1 is a power supply, 2 is a current detecting means for detecting a current flowing through the lamp 5, and 3a is a conduction / interruption of the power cutoff means according to a detection value of the current detecting means 2.
A control circuit for controlling interruption, 6 is a receiving member (also called a socket) into which the base 5a of the lamp 5 is inserted. Here, a circuit having a self-holding function is used as the control circuit 3a. In other words, once the excessive current is recognized and the power cutoff means 4 is turned off, the power cutoff means 4 keeps the cutoff state regardless of the detection value of the current detection means until a separate recovery operation is added. is doing.

Now, for example, as the lamp 5, the power consumption 14
Assuming that a W 60 W light bulb type fluorescent lamp is inserted in the receiving member 6, at this time, since the detection value output by the current detecting means 2 is sufficiently low, the control circuit 3a turns off the power cutoff means. There is nothing to do. On the other hand, when an incandescent lamp of 60 W is inserted into the base metal 6, the current flowing through the circuit increases, and the current value detected by the current detecting means 2 increases, so that the control circuit 3a causes the power cutoff means. Control to the cutoff state. As a result, the current value detected by the current detection means becomes 0, but since the control means 3a has the self-holding function, the power cutoff means remains in the cutoff state even after the detection value of the current detection means becomes 0. Maintained at. Therefore, the lamp 5 is disconnected from the power supply 1, and the danger caused by using the high current consumption lamp is prevented.

FIG. 2A is a block diagram showing a second embodiment of the present invention. The same reference numerals are given to the same parts as those of the embodiment shown in FIG. 1, and thus the duplicated description will be omitted. However, in the present embodiment, the same parts as those of the first embodiment shown in FIG. The different points are that the control circuit 3b does not have a self-holding function, and that the weak current detection means 7 is connected in parallel to the power cutoff means 4. Figure 2
In the circuit of (a), when the power interruption means 4 is in the conducting state, the weak current detection means is short-circuited by the low resistance power interruption means 4, so that the weak current detection means 7 has a special influence on the circuit operation. Does not affect Therefore, the lamp 6 as planned for the receiver 6 (for example, 60 W)
Type 14W bulb type fluorescent lamp) is inserted,
The same operation as the circuit of is performed.

Assuming that an unexpectedly large wattage lamp, for example, a 60 W incandescent lamp is inserted in the base 6 as the lamp 5, the current value detected by the current detecting means becomes high, so that the control device At 3b, the power supply cutoff means 4 controls the cutoff state. However, since the weak current detection means 7 is connected in parallel to the power cutoff means 4, a weak current continues to flow through the lamp 5. This weak current is detected by the weak current detecting means 7, and in response to this detection signal, the control circuit 3b continues to maintain the cutoff state of the power cutoff means.
Next, when the large current consumption lamp 5 is removed, the current values detected by the current detecting means 2 and the weak current detecting means 7 become zero. Then, since the control circuit 3b does not have the self-holding function, the cutoff state of the power cutoff means 4 is released, and the conductive state is restored. When a regular lamp, for example, a 60 W class 14 W light bulb type fluorescent lamp is inserted in this state, the power cut-off means is in a conductive state, so that the lamp normally lights.

FIG. 2B is a block diagram showing the third embodiment of the present invention. 2 (a) are given the same reference numerals as those in the embodiment shown in FIG. 2 (a), and a duplicate description will be omitted.
The difference from the second embodiment shown in (a) is that the weak current detection means 7 is not connected in parallel with the power cutoff means 4 and is a switch that conducts when the power cutoff means 4 is in the cutoff state. The point is that it is connected to the power supply 1a via the element S. When the power cutoff means 7 is in the conducting state, the switch element S is in the cutoff state. Therefore, in the present embodiment shown in FIG. 2B, in the second embodiment shown in FIG. Performs the same operation as.

If an unscheduled large wattage lamp, for example, an incandescent lamp of 60 W is inserted in the base 6 as the lamp 5, the current value detected by the current detecting means becomes high, which causes control. The device 3b controls the power cutoff means 4 to a cutoff state. As a result, the switch element S becomes conductive, and a weak current flows from the power source 1a to the weak current detection circuit 7 and the lamp. This weak current is detected by the weak current detecting means 7, and in response to this detection signal, the control circuit 3b continues to maintain the cutoff state of the power cutoff means. When the large current consumption lamp 5 is removed, the current values detected by the current detecting means 2 and the weak current detecting means 7 are both zero.
Becomes Then, since the control circuit 3b does not have the self-holding function, the cutoff state of the power cutoff means 4 is released, and the conductive state is restored. Thereby, the switch element S
Is cut off again.

FIG. 3 is a block diagram showing a fourth embodiment of the present invention. In FIG. 3, 11 is an AC power supply, 12 is an impedance circuit, 13 is a control circuit having a rectifying circuit 13a and a switching circuit 13b having a self-holding function, and 14 is a power breaker. The operation is similar to that of the first embodiment shown in FIG.

Here, as the impedance circuit 12, a resistor, an inductor (coil), or a combination circuit thereof is used. The rectifier circuit 13a may be either a full-wave rectifier circuit or a half-wave rectifier circuit. The elements forming the switching circuit 13b include thyristors such as silicon controlled rectifiers, bipolar transistors, and M
An OS field effect transistor, a junction field effect transistor, or the like is used. However, when the device itself does not have a self-holding function like a transistor,
It is necessary to attach a self-holding circuit separately. As the power breaker 14, a switch using a semiconductor element or a normally closed relay is used. The fourth embodiment shown in FIG. 3 may be modified such that the switching circuit 13b does not have the self-holding function, but the power breaker 14 has the self-holding function. In any case, a means for canceling the self-holding function is required.

FIG. 4A is a block diagram showing the fifth embodiment of the present invention. In FIG. 4A, the same reference numerals are given to the same parts as those of the fourth embodiment shown in FIG. 3, and thus duplicated description will be omitted. Figure 4
In (a), 13c is a switching circuit that does not have a self-holding function, and 15 is capable of supplying a weak current to the lamp 5 and detecting the weak current when the power breaker 14 is in a cutoff state. This is a very weak current detection circuit. The operation of this circuit is the same as that of the second circuit shown in FIG.
This is the same as the case of the embodiment.

A bipolar transistor, a MOS type field effect transistor, a junction type field effect transistor or the like is used as an element constituting the switching circuit 13c. Further, the weak current / current detection circuit 15 can be configured to include, for example, the primary side of the transformer and the primary side of the photocoupler. The secondary side of these elements is the control circuit 1
Although it is placed in 3, a half-wave or full-wave rectifier is separately required when using a transformer. As the photocoupler, all types having a light emitting element and a light receiving element can be used, but typically a light emitting diode (LED)
And a photodiode or a combination of a light emitting diode and a phototransistor.

FIG. 4B is a block diagram showing the sixth embodiment of the present invention. In FIG. 4B, FIG.
The same reference numerals are given to the same parts as those of the embodiment shown in FIG. 4, and thus the duplicate description will be omitted, but in the present embodiment, the second embodiment shown in FIG. The difference is that the weak current detection circuit 15 is not connected in parallel with the power breaker 14, but is connected to the power supply 11a via the switch element S that is conductive when the power breaker 14 is in the cutoff state. And the point where the display means is connected in series with the weak current detection circuit 15. The operation of the circuit of this embodiment is similar to that of the third embodiment shown in FIG. 2B, but when the switch element S is further closed, display is performed by the display element 16. It is done like this.
A light emitting diode or the like can be used as the display element 16. This display element can also be used in other embodiments having a weak current detection circuit. When the attached lamp does not light and the display element 16 is displaying, the following can be known. The power supply is active. The lamp is not broken. The installed lamp is a high wattage lamp.

[0018]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
Will be described in detail with reference to. [First Embodiment] FIG. 5 shows a first embodiment of the present invention.
It is a circuit diagram. In FIG. 5, D₁ ~ D ₃ Is Daio
Do, C₁ ~ C₃ Is a capacitor, R₁ ~ R_Five Is resistance, SW
Is a normally open switch, TH is a silicon controlled rectifier, etc.
Irista, 101 is AC power supply, 102 is transformer with tap
And 103 is a diode D₁ , Capacitor C₁ , C₂ 
And resistance R₁ Rectifying / smoothing circuit consisting of
Iodo D₃ Is a relay having a normally-closed contact.

Next, the operation of the circuit of the first embodiment will be described. Now, as the lamp 5, a regular lamp, for example 60
Assuming that a W-type 14W light bulb type fluorescent lamp is inserted in the base plate 6, the AC power source 101 is connected to the line X and the relay 10 is connected.
The lamp 5 is turned on by forming a normally closed contact of No. 4, a base 6, a lamp 5, a resistor R ₂ , and a closed circuit which returns to the power source through the line Y. At this time, since the current flowing through the lamp is low, the voltage drop across the resistor R ₂ is small and the thyristor TH
Will never turn on. Therefore, the relay 104
The normally closed contact of is kept closed, and the lamp 5 continues to light.

Next, assuming that a lamp having a current consumption larger than that planned as the lamp 5, for example, an incandescent lamp of 60 W is inserted in the base 6, the AC power supply 101, the line X, and the relay 104 are normally closed. The lamp 5 is momentarily lit by forming a closed circuit that returns to the power source via the contact point, the receiving plate 6, the lamp 5, the resistor R ₂ , and the line Y. But,
At this time, since the current flowing through the lamp 5 is large, the voltage drop across the resistor R ₂ becomes large, and the thyristor TH is turned on. Then, the normally closed contact of the relay 104 is released, so that the lamp 5 is turned off. Then, the thyristor TH continues to maintain the state once it is turned on.

In order to remove the high current consumption lamp inserted in the receiving metal 6 and attach the regular current consumption lamp, after removing the high current consumption lamp, the normally open switch SW is once closed to close the thyristor TH. Turn off. After that, the lamp of regular current consumption, 60W type 14
If you insert a W bulb fluorescent lamp, it will turn on normally. To turn off the thyristor TH, instead of the method shown, connect a normally closed switch in series to the thyristor TH and temporarily release it, or connect a normally open switch in parallel to the thyristor TH. Short this for a short time,
You may employ means, such as. In addition, the rectifying / smoothing circuit 10
Instead of the circuit shown as 3, a component commercially available as a three-terminal regulator may be used.

[Second Embodiment] FIG. 6 is a circuit diagram showing a second embodiment of the present invention. In FIG. 6, parts that are the same as the parts of the first embodiment shown in FIG. 5 are given the same reference numerals, and a duplicate description thereof will be omitted. In the circuit of FIG. 6, the diode D is different from that of the circuit of FIG.
_4, D _5, resistors R ₆ and light-emitting diodes D ₆ and the circuit of the photocoupler PC consisting phototransistor Q ₁ Metropolitan is added, and the bipolar transistor Q ₂ is used instead of the thyristor TH.

Next, the operation of the circuit of the second embodiment will be described. Now, as the lamp 5, a regular lamp, for example 60
Assuming that a W-type 14W light bulb type fluorescent lamp is inserted in the base plate 6, the AC power source 101 is connected to the line X and the relay 10 is connected.
The lamp 5 is turned on by forming a normally closed contact of No. 4, a base 6, a lamp 5, a resistor R ₂ , and a closed circuit which returns to the power source through the line Y. At this time, since the current flowing through the lamp is low, the voltage drop across the resistor R ₂ is small and the transistor Q
₂ remains non-conducting. Therefore, the relay 104 remains closed and the lamp 5 continues to light.

Next, a lamp having a current consumption higher than that planned for the lamp 5, for example, an incandescent light bulb of 60 W, is received by the receiver 6
, The line X, the normally closed contact of the relay 104, the receiving plate 6, the lamp 5,
The lamp 5 is momentarily turned on by forming a closed circuit which returns to the power source through the resistor R ₂ and the line Y. However, at this time, since the current flowing through the lamp 5 is large, the resistance R
The voltage drop at ₂ increases and transistor Q ₂ conducts. As a result, the normally closed contact of the relay 104 is opened and the lamp 5 is turned off. At this time, the AC power supply 101 forms a closed circuit that returns to the power supply through the line X, the diode D ₄ , the resistor R ₆ , the light emitting diode D ₆ , the bracket 6, the lamp 5, the resistor R ₂ , and the line Y. , A weak current flows through this closed circuit. As a result, the lamp 5 is not turned on, but the light emitting diode D ₆ is turned on. Upon receiving this light, the phototransistor Q ₁ becomes conductive and the diode D
_A base current is supplied to the bipolar transistor Q ₂ via ₅ to make this transistor conductive. As a result, the normally closed contact of the relay 104 is maintained in the open state.

When the high current consumption lamp inserted in the receiving metal 6 is removed, the power supply to the light emitting diode D ₆ is cut off, the photodiode D ₆ is turned off, and the conduction of the phototransistor Q ₁ is also terminated. The transistor Q ₂ turns off. As a result, the contact of the relay 104 returns to the closed state. In this state, a lamp with a normal current consumption, for example 6
If a 0W-type 14W bulb-type fluorescent lamp is inserted, it will turn on normally.

[Third Embodiment] FIG. 7 is a circuit diagram showing a third embodiment of the present invention. In FIG. 7, parts that are the same as the parts of the second embodiment shown in FIG. 6 are given the same reference numerals, and a duplicate description thereof will be omitted. In the circuit of FIG. 7, in comparison with the circuit of FIG. 6, the anode of the light emitting diode D ₆ is connected to the rectifying / smoothing circuit 103 side,
The cathode is connected to the normally open contact of the relay 104 via the resistor R ₇ . Next, the operation of the circuit of the third embodiment will be described. When a regular lamp as the lamp 5 is inserted in the base 6, the same operation as in the second embodiment is performed. Assuming that a lamp having a current consumption larger than that planned for the lamp 5 is inserted in the base metal 6, the normally-closed contact of the relay 104 is opened by the same operation as in the second embodiment. The lamp 5 is turned off. At this time, the normally open contact of the relay 104 is closed, and the light emitting diode D ₆ , from the power supply (rectifying / smoothing circuit 103),
Resistance R ₇ , normally open contact of relay 104, lamp 5, resistance R ₂
By forming a closed circuit that returns to the power supply via
A weak current flows through this closed circuit. As a result, the lamp 5 is not turned on, but the light emitting diode D ₆ is turned on.
The subsequent operation is similar to that of the second embodiment.

[Fourth Embodiment] FIG. 8 is a circuit diagram showing a fourth embodiment of the present invention. In FIG. 8, parts that are the same as the parts of the third embodiment shown in FIG. 7 are given the same reference numerals, and a duplicate description thereof will be omitted. In the circuit of FIG. 8, the circuit of the photocoupler PC is removed from the circuit of FIG. 7, and a weak current detection circuit including resistors R _{8 to} R ₁₂ , a diode D ₇ and transistors Q ₃ and Q ₄ is used instead. Has been added.

Next, the operation of the circuit of the fourth embodiment will be described. When a regular lamp as the lamp 5 is inserted in the base 6, the same operation as in the case of the third embodiment is performed. At this time, the transistor Q ₃ is rendered conductive by receiving the base current supplied via the resistor R ₁₀ , and the collector potential thereof is low, so that the transistor Q ₄ is non-conductive. Now, assuming that a lamp having a current consumption higher than that planned as the lamp 5 is inserted, the same operation as in the case of the second embodiment is performed.
The normally closed contact of the relay 104 is opened, and the lamp 5 is turned off.
At this time, the normally open contact of the relay 104 is closed to form a closed circuit from the power supply (rectifying / smoothing circuit 103) to the power supply through the resistor R ₈ , the normally open contact of the relay 104, the lamp 5, and the resistor R _2. As a result, a weak current that does not turn on the lamp 5 flows through this closed circuit. Thus, lower the cathode potential of the diode D _7, the diode D ₇
Conducts to lower the base potential of the transistor Q ₃ . Therefore, the transistor Q ₃ becomes non-conductive, the transistor Q ₄ becomes conductive, and the base current is supplied to the transistor Q ₂ . This keeps the transistor Q ₂ conducting,
The relay 104 continues in the opposite condition to that shown.

When the high current consumption lamp inserted in the receiving metal 6 is removed, the current flowing through the resistor R ₈ disappears, the potential on the cathode side of the diode D ₇ rises, and this diode becomes non-conductive. Thus, the transistor Q ₃ are conducting, Q ₄ becomes non-conductive, the transistor Q ₂
Turns off. Therefore, the contact of the relay 104 returns to the illustrated state. In this state, if a lamp with a normal current consumption is attached, it will light normally. By using the diode D ₇ in this embodiment or the diode D ₄ in the second embodiment (FIG. 6) as a light emitting diode, this element can have a display function.

[Fifth Embodiment] FIG. 9 shows the fifth embodiment of the present invention.
It is a circuit diagram which shows an Example. First embodiment shown in FIG.
Then it was a circuit to connect only one lamp, but
The example relates to the case of connecting multiple lamps in parallel.
Is. In FIG. 9, the part of the first embodiment shown in FIG.
Parts that are equivalent to the minutes have the same reference numerals
The overlapping description will be omitted. In FIG. 9, 5₁ ~ 5_Four 
Is a lamp, D_{twenty one}~ D_{twenty four}Is a diode, R _{twenty one}~ R_{twenty four}Is resistance
Is.

[0031] In the circuit of FIG. 9, when the bulb-type fluorescent lamp of the lamp 5 ₁ to 5 normal all the ₄ lamps example 60W type 14W is installed, all the lamps are normally lit. However, any lamp, for example lamp 5
As _1, assuming that a lamp for example 60W incandescent light bulb scheduled once was more current consumption is inserted, by the voltage drop of the resistor R ₂₁ being inserted into the circuit of the lamp is increased, the thyristor TH Turns on and the normally closed contact of the relay 104 opens. This turns off all the lamps.

[Sixth Embodiment] FIG. 10 shows the sixth embodiment of the present invention.
3 is a circuit diagram showing an embodiment of FIG. In this embodiment, the circuit of the second embodiment shown in FIG. 6 is modified so that a plurality of lamps can be connected in parallel. In FIG. 10, parts that are the same as the parts of the other embodiments shown in FIGS. 6 to 9 are given the same reference numerals, and a duplicate description thereof will be omitted. In FIG. 10, the illustration of the transformer 102, the rectifying / smoothing circuit 103, and the bipolar transistor Q ₂ described in the circuit of FIG. 6 is omitted.

Also in the circuit of FIG. 10, the lamps 5 _{1 to} 5
_When all the regular fluorescent lamps are installed as ₃ , all the lamps will light normally. However, any lamp, for example, as a lamp 5 _1, when the lamp for example 60W incandescent light bulb scheduled once was more current consumption to that inserted, the resistor R ₂₁ being inserted into the circuit of the lamp As the voltage drop increases, the transistor Q ₂ (not shown) becomes conductive and the normally closed contact of the relay 104 opens. This turns off all the lamps. At this time,
When the light emitting diode D ₆ lights up via the lamp 5 ₁ , the phototransistor Q ₁ becomes conductive and the relay 10
The normally closed contact of No. 4 is maintained in the open state. Here, when the large current consumption lamp 5 ₁ is removed, the light emitting diode D ₆ is turned off (since the impedance of the lamps 5 ₂ and 5 ₃ at direct current is extremely large, the light emitting diode D ₆ emits light by a regular fluorescent lamp. There is nothing to do). As a result, the relay 104 returns to the illustrated state, and the lamps 5 ₂ and 5 ₃ are turned on. And this is also lit when the normal lamp is mounted as a lamp 5 _1.

[Seventh Embodiment] FIG. 11 shows the seventh embodiment of the present invention.
3 is a circuit diagram showing an embodiment of FIG. This embodiment is shown in FIG.
A plurality of lamps are arranged in parallel by modifying the circuit of the third embodiment.
It allows you to connect to columns. Smell of Figure 11
And a portion equivalent to the portions of the other embodiments shown in FIGS.
Since the same reference numerals are attached to the minutes, overlapping explanations
The description is omitted. In FIG. 11, described in the circuit of FIG.
The transformer 102, the rectifying / smoothing circuit 103 and the bypass
Polar transistor Q₂ Is omitted. Well
Also, the relay has an S or S contact.₁ ~ S₃ There are 3 sets of
The one used is
Are not shown). Also, photo coupler PC
As one phototransistor Q₁ Against 3
Light emitting diode D₆₁~ D₆₃With built-in
ing. Each light emitting diode D₆₁~ D₆₃Anode and power supply
And a light emitting diode D for display between ₈₁~ D₈₃
And resistance R₇₁~ R₇₃Are connected.

Also in the circuit of FIG. 11, the lamps 5 _{1 to} 5
_When all the regular fluorescent lamps are installed as ₃ , all the lamps will light normally. However, assuming that one of the lamps for example the lamp 5 ₁ incandescent bulb scheduled once was more current consumption is inserted, opens the normally closed contact of the relay is rendered conductive an unillustrated transistor Q _2, the normally open contact Closed (each contact S _{1 to} S ₃ is in the opposite state to the illustrated state). This turns off all the lamps.

At this time, a weak current flows through the lamp 5 ₁ through the light emitting diode D ₈₁ , the light emitting diode D ₆₁ , and the contact S ₁ , and the light emitting diodes D ₈₁ and D ₆₁ are turned on. However, since the direct current impedance of the fluorescent lamps 5 ₂ and 5 ₃ is extremely large, the light emitting diode D ₆₂ ,
D ₆₃ , D ₈₂ , and D ₈₃ do not light. When the light emitting diode D ₆₁ is turned on, the phototransistor Q ₁ is turned on to supply the base current to the transistor Q _{2 (} not shown), and the contacts S _{1 to} S ₃ of the relay continue to be in a state opposite to that shown.
Here, when the large wattage light bulb attached as the lamp 5 ₁ is removed, the light emitting diode D ₆₁ is turned off, the phototransistor Q ₁ becomes non-conductive, and the relay returns to its original state. ₂ , 5 ₃ lights up. Next, when the normal wattage fluorescent lamps lamp is mounted as a lamp 5 _1, which is also normally lit.
In this embodiment, since the light emitting diodes D _{81 to} D ₈₃ for display are provided corresponding to the respective lamps, the light emitting diodes are turned on to turn the sixth embodiment [FIG. 4 (b)].
In addition to achieving the display function described in, it becomes possible to know which receptacle the high wattage lamp was attached to. In this embodiment, a photocoupler having three built-in light emitting diodes is used. However, a plurality of photocouplers each having only one light emitting element are used, and a different photocoupler is used for each lamp. You may make it connect.

[Eighth Embodiment] FIG. 12 shows the eighth embodiment of the present invention.
3 is a circuit diagram showing an embodiment of FIG. In this embodiment, the circuit of the fourth embodiment shown in FIG. 8 is modified so that a plurality of lamps can be connected in parallel. In FIG. 12, parts that are the same as the parts of the other embodiment shown in FIG. 8 and the like are designated by the same reference numerals, and a duplicate description thereof will be omitted. 12, the illustration of the transformer 102, the rectifying / smoothing circuit 103 and the bipolar transistor Q ₂ described in the circuit of FIG. 8 is omitted. In FIG. 12, R _{81 to} R ₈₃ are resistors and D _{71 to} D ₇₃ are diodes.

Also in the circuit of FIG. 12, the lamps 5 _{1 to} 5
_When all the regular fluorescent lamps are attached as ₃ , all the lamps are normally turned on by the same operation as the circuit of FIG. However, any of the lamps, for example, when the lamp 5 ₁ lamp current consumption than was scheduled as it is assumed that the inserted, opens the normally closed contact of the relay is rendered conductive an unillustrated transistor Q _2, the normally open contact Closed (each contact S _{1 to} S ₃ is in the opposite state to the illustrated state). This turns off all the lamps.

At this time, the lamp 5₁ Has a resistance R₈₁₁ ,
Contact point S₁ A weak current flows through the diode D₇₁Mosquito
The sword potential drops. This allows the diode D₇₁Led by
Through, transistor Q₃ Reduce the base potential of. to this
Than transistor Q₃ Is non-conducting, Q_Four Becomes conductive
Q outside the figure₂ Supply the base current to. This allows you to
Ray's contact point S₁ ~ S₃ Continues in the opposite state as shown.
Kick At this time, the resistance R ₈₂, R₈₃Almost no current flows through
Not therefore diode D₇₂, D₇₃Be conducted
There is no. Where the lamp 5₁ Was installed as
When the high wattage bulb is removed, the resistance R₈₁Electricity flowing through
Current disappears, diode D₇₁The cathode potential of
Therefore, the diode D₇₁Becomes non-conducting,
Star Q₃ The base potential of the
Start communicating. As a result, the transistor Q_Four Is non-conducting
And transistor Q not shown₂ Supply of base current to
Stop. As a result, each contact S of the relay₁ ~ S₃ Is the original
By returning to the state, the lamp 5₂ 5,₃ Turn on
To do. Next, lamp 5₁ As a normal fluorescent lamp
Once attached, it also lights up normally.

[0040]

As described above, according to the present invention,
Even if an incandescent light bulb with the same amount of light as the light bulb type fluorescent lamp that is planned to be attached to the lighting device developed for the light bulb type fluorescent lamp is attached, its lighting can be reliably prevented, so that it does not generate heat. It is possible to prevent unforeseen accidents. Further, according to the second embodiment in which the photocoupler or the like is used to maintain the cut-off state of the power supply circuit breaker, a regular lamp can be obtained by simply removing the incandescent lamp with a large current consumption. Can be restored to a state where it can be turned on, which makes handling extremely simple.

[Brief description of drawings]

FIG. 1 is a configuration diagram for explaining a first embodiment of the present invention.

FIG. 2 is a configuration diagram for explaining second and third embodiments of the present invention.

FIG. 3 is a configuration diagram for explaining a fourth embodiment of the present invention.

FIG. 4 is a configuration diagram for explaining fifth and sixth embodiments of the present invention.

FIG. 5 is a circuit diagram showing a first embodiment of the present invention.

FIG. 6 is a circuit diagram showing a second embodiment of the present invention.

FIG. 7 is a circuit diagram showing a third embodiment of the present invention.

FIG. 8 is a circuit diagram showing a fourth embodiment of the present invention.

FIG. 9 is a circuit diagram showing a fifth embodiment of the present invention.

FIG. 10 is a circuit diagram showing a sixth embodiment of the present invention.

FIG. 11 is a circuit diagram showing a seventh embodiment of the present invention.

FIG. 12 is a circuit diagram showing an eighth embodiment of the present invention.

[Explanation of symbols]

1, 1a, 11a Power supply 2 Current detection means 3a, 3b Control circuit 4 Power supply cutoff means 5, 5 _{1 to} 5 ₄ Lamp 5a Base 6 Receptacle 7 Weak current detection means 11 AC power supply 12 Impedance circuit 13 Control circuit 13a Rectifier circuit 13b , 13c switching circuit 14 power supply breaker 15 weak current detection circuit 16 display unit 101 an AC power supply 102 tapped transformer 103 rectifying and smoothing circuit 104 relays C ₁ -C ₃ capacitor _{D 1 ~D 5, D 7,} D 21 ~D ₂₄ , D _{71 to} R ₇₃ Diodes D ₆ , D _{61 to} D ₆₄ , D _{81 to} R ₈₃ Light emitting diode PC Photo coupler Q ₁ Phototransistor Q _{2 to} Q ₄ Bipolar transistor R _{1 to} R ₁₂ , R _{21 to} R ₂₄ , R ₈₁ ~ R ₈₃ Resistance S Switch element SW switch TH Thyristor

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) H05B 37/02 F21V 25/10

Claims (11)

(57) [Claims] 1. A current detecting means for detecting a current flowing through the lamp and a circuit breaking means are provided at a position connected in series with a lamp on a receiving side into which a lamp cap is inserted, and the current detecting means and the current detecting means are provided. A control circuit is provided between the circuit breaker and the incandescent lamp with a wattage or more that is expected to be received.
When a high wattage light bulb, which is a light bulb, is inserted, the control circuit controls the circuit interruption means to an interruption state by the output signal of the current detection means to receive the large wattage bulb by the large wattage bulb. A bulb-type fluorescent lamp lighting device, which is characterized in that it is not permanently turned on while being inserted into gold. 2. A parallel circuit of a series circuit of a plurality of receivers and a current detecting means is connected in series with the circuit breaking means,
2. The compact fluorescent lamp lighting device according to claim 1, wherein the circuit breaker is turned off when a high wattage light bulb is inserted into any of the receivers. 3. The light bulb type fluorescent lamp illuminating device according to claim 1, wherein the current detecting means is a resistor, an inductor, or a combination circuit thereof. 4. The circuit breaking means is a relay, and the control circuit includes a switching element for driving the circuit breaking means according to an output signal of the current detecting means. Bulb type fluorescent lighting equipment. 5. The switching element is a thyristor,
The electric bulb type fluorescent lamp illuminating device according to claim 4, which is a bipolar transistor, a MOS type field effect transistor, or a junction type field effect transistor. 6. The light bulb type fluorescent lamp illuminating device according to claim 5, wherein when the switching element is a thyristor, an element capable of turning off the thyristor is connected to the thyristor. 7. A weak current detection circuit capable of flowing a weak current to the lamp in parallel with the circuit breaking means and detecting the weak current when the circuit breaking means is in a breaking state. The control circuit is connected and has a function of receiving an output signal of the weak current detection circuit. When the weak current detection circuit detects a weak current flowing through a large wattage light bulb, the control circuit causes the circuit interruption means to operate. The light bulb type fluorescent lamp illuminating device according to claim 1 or 2, wherein the cutoff state is maintained. 8. A weak current detection circuit capable of passing a weak current to the lamp and capable of detecting the weak current is connected to a receiving member, and is in a conductive state when the circuit breaking means is in a breaking state. The weak current detection circuit is connected to a power supply circuit via a switch element, and the control circuit has a function of receiving an output signal of the weak current detection circuit, and the weak current detection circuit has a large wattage. The light bulb type fluorescent lamp illuminating device according to claim 1 or 2, wherein the control circuit maintains the cutoff state of the circuit cutoff means when a weak current flowing through the lightbulb is detected. 9. The cut-off state of the circuit cut-off means is automatically restored when the high-wattage electric bulb is removed and the weak current flowing through the weak-current detection circuit disappears. Light bulb type fluorescent lighting device. 10. The weak current detection circuit is configured to include a primary side of a photocoupler, and a secondary side of the photocoupler is connected to the control circuit. 9. The bulb-type fluorescent lamp illumination device according to item 9. 11. The display element is connected in series with the weak current detection circuit.
The incandescent fluorescent lighting device described.