KR100714272B1 - Led lamp for leading emergency exit - Google Patents

Abstract

The present invention relates to an emergency induction lamp having an LED as a light source, and receives an AC power source to be supplied to a driving circuit of an emergency induction lamp, and includes a power input unit including a rectifying unit converting an AC voltage according to the AC power source into a first DC voltage; An emergency control unit including a switching regulator unit for outputting the first DC voltage as a second DC voltage, a relay circuit in which driving is stopped in case of power failure and the driving is controlled by an administrator in an emergency; and an output of the relay circuit The second DC voltage is converted into a third DC voltage lower than the second DC voltage to be supplied as a general power supply of the LED in daily operation, and to supply the emergency power to the LED in case of power failure or emergency. And an LED power supply for connecting the LED to the current control IC, and the emergency power supply by the general power supply. But when provided with a charging unit charges the power supply input section or a power failure an emergency is characterized in that a switching device for the testing of the LED power supply.

Emergency Induction Lamp, Rectifier, Switching Regulator, Current Regulation IC

Description

LED emergency induction light {LED LAMP FOR LEADING EMERGENCY EXIT}

1 is an overall circuit diagram showing an embodiment of the LED emergency induction light according to the present invention.

2 is a circuit diagram showing a power supply input unit and a switching regulator unit according to an embodiment of the present invention.

3 is a circuit diagram showing an embodiment of an LED power supply according to the present invention;

4 is a circuit diagram showing an embodiment of a charging unit according to the present invention.

5 is a circuit diagram showing an embodiment of an emergency control unit according to the present invention;

<Description of the symbols for the main parts of the drawings>

10 Power input

20 switching regulator

30 LED Power Supply

40 live parts

50 emergency controls

60 current regulation IC

70 LED Emergency Induction Light Source

The present invention relates to an emergency induction lamp using an LED as a light source, and more particularly, a voltage drop can be supplied to the LED side by a simple circuit at the input stage of the power supply, and the current stabilization when the LED is driven by using a current adjustment IC is achieved. Possible emergency induction lights.

The emergency induction lamp is the same as the information display board for use when an emergency such as a fire occurs in a building, and it is configured to use a commercial power in normal use and an emergency power in an emergency.

In the event of a fire, emergency induction lamps using various light sources have been developed because it is most effective to use light to more easily locate the exit of the building. For example, a fluorescent lamp or a cold cathode discharge tube for general lighting is used as a light source. In the case of a fluorescent lamp, the lamp has a life of about 8000 hours, which is relatively short, and the quality is uneven and maintenance costs are high. In the case of the discharge tube, its lifespan is about 20,000 hours, which is longer than a fluorescent lamp, but it still has many problems in terms of cost and reliability, such as using an expensive ballast and installing a light guide plate.

Accordingly, in recent years, emergency induction lamps using LED display panels have been developed, and examples thereof include Patent Publication No. 2005-75326. The present invention discloses improvements such as providing an LED to a heat resistant glass cover to improve visibility and to generate an alarm sound through an alarm sound generator.

However, in the prior art of the emergency induction lamp using the LED as a light source, there is a problem in the stability of the current due to the failure to apply an IC suitable for driving the LED, and the large-scale down transformer is used in the circuit receiving power. There is a problem that a lot of space and cost to install the induction lamp.

Furthermore, in the case of a product in which power supply on / off must be made in a timely manner such as an emergency induction lamp, such specificity should be taken into consideration when selecting a fuse. However, in the related art, in consideration of such specificity, a fuse for an emergency induction lamp is used. It is difficult to find a case.

In addition, as described above, the emergency induction lamp is to be used separately from the commercial power source and the emergency power source, even though it is necessary to clearly distinguish the use and time of use of both power sources by charging the battery for the emergency power source and isolating it from the commercial power source. Nevertheless, the technology that implements it properly has not been developed.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems of the prior art, and a first object of the present invention is to provide an emergency induction lamp that can be miniaturized and reduced in cost while considering the stability of current in implementing an emergency induction lamp using an LED as a light source. .

It is also a second object of the present invention to provide an emergency induction lamp employing a fuse capable of reflecting the specificity that the emergency induction lamp needs to repeat on / off timely.

Finally, it is a third object to provide an emergency induction lamp that can reliably isolate commercial power and emergency power according to time and use.

In order to achieve the above object, the emergency induction lamp according to the present invention, in the emergency induction lamp using the LED as a light source, receives an AC power to be supplied to the drive circuit of the emergency induction light, and the AC voltage according to the AC power supply to the first DC A power input unit including a rectifying unit converting the voltage, a switching regulator unit outputting the first DC voltage to the second DC voltage, and a relay circuit in which the driving is stopped in case of power failure and the driving is controlled by the manager in an emergency An emergency control unit having a control unit and controlled by an output of the relay circuit, and converts the second DC voltage into a third DC voltage lower than the second DC voltage, and supplies it as a general power source of the LED in daily life, Or an LED power supply for supplying emergency power to the LED in case of emergency and connecting the LED to a current regulation IC , But provided with a charging section for charging the emergency power by the common power source, it characterized in that it comprises a switching device for the test of the power supply input section or a power failure an emergency power supply of the LED.

That is, the present invention provides a technology capable of implementing an emergency induction lamp that can stabilize a current with a small chip by connecting a current regulation IC to the LED. Furthermore, as in the prior art, the power supply voltage including the rectifying part is passed through the transformer part through the power input part and the switching regulator part so as to lower the power supply voltage as needed without using a large-scale down transformer.

In addition, the present invention with respect to the second object, the power input unit includes a first automatic recovery fuse for overcurrent protection of the AC power, the LED power supply unit is responsible for overcurrent protection of the emergency power supply; And a second automatic recovery fuse, wherein the first automatic recovery fuse and the second automatic recovery fuse provide an emergency induction lamp that is a poly switch.

While a general fuse is inconvenient to be replaced once it is opened by overcurrent and a short circuit occurs due to a momentary surge voltage, the polyswitch is a kind of electronic fuse and can solve the problem of the conventional fuse. . In particular, when an overcurrent flows into a circuit, which is composed of a polymer and a conductive material, an element that acts as a fuse that becomes a high resistance state from a low resistance state to a high resistance state by an overcurrent heat to open a circuit is often caused by an emergency induction lamp. It can function as a fuse that is very suitable for the situation in which it is generated and removed.

On the other hand, in order to achieve the third object, it is preferable that the emergency power supply is isolated from the general power supply of the LED and a relay.

As described above, the emergency induction lamp is configured to operate by a commercial power source in ordinary times, and a battery (emergency power source) stored in a commercial power source in an emergency, but the present invention provides a point of time when the commercial power source operates and the emergency power source operates. It provides a technique that utilizes a relay circuit as a means of clearly distinguishing the time point.

Optionally, the LED is preferably a power LED, and furthermore, the charging unit preferably includes a separate light source for displaying the state of charge. Power LED is a kind of LED like general LED, but it consumes a lot of current and has a lot of light emission. By applying such a power LED to the emergency induction lamp there is an advantage that can more faithfully perform the role as an emergency induction lamp in an emergency such as fire. In addition, in order to allow the person in charge of the emergency induction light to easily grasp the state of charge of the battery, which is an emergency power source, an emergency induction light may be implemented by additionally installing an additional LED for indicating the state of charge of the charging unit.

EMBODIMENT OF THE INVENTION Hereinafter, one Embodiment of this invention is described in detail with reference to an accompanying drawing.

1 is an overall circuit diagram showing an embodiment of the LED emergency induction lamp according to the present invention.

First, the operation principle of the power input unit 10 and the switching regulator unit 20 will be described with reference to FIG. 2, which shows the power input unit 10 and the switching regulator unit 20 separately in FIG. 1.

When commercial power is supplied to the AC input, it passes through the noise filter LF1 via the surge observer VR1 and the polyswitch PS1. At this time, the capacitors C8 and LF1 act as low-pass noise filters to attenuate the switching noise of the transistor TR5.

The diode D1, the resistor R1, and the electrolytic capacitor C1 operate as rectifiers, and perform rectification / smoothing operations according to the power supply capacity of the switching unit 20 and adjust voltage.

When the power is turned on, the transistors TR2 and TR3 operate to prevent the operation of the transistor TR5. However, when the zener voltage of ZD1 is reached, the transistor TR1 operates to stop the transistors TR2 and TR3. At this time, transistor TR5 switches to a bias voltage through resistors R9 and R10.

The switching power of the transistor TR5 is induced to the secondary side through L1 located between the switching unit 20 and the LED power supply circuit 30. In this process, an operation similar to that of the down-transform according to the prior art is performed, Voltage drop occurs. However, some power is again induced from the secondary side of L1 to serve to maintain switching of transistor TR5 again by C3 and R28.

During power failure, the zener voltage of zener diode ZD1 is not maintained, so transistors TR1 do not operate and transistors TR2 and TR3 operate instantaneously, and transistor TR4 operates by discharging capacitor C9 to quickly stop switching of transistor TR5.

Now, the operation of the LED power supply circuit 30 will be described with reference to FIG. 3 showing the LED power supply circuit 30 among the components of FIG. 1.

The voltage induced in the switching regulator circuit 20 on the primary side is rectified through the diodes D5 and D6, and the diode D5 forms a smoothing circuit for powering the LED3 70 together with the capacitor C4, and the diode D6 and the capacitor C5 A smoothing circuit for supplying power to the charging circuit 40 of the battery (not shown) is configured.

Transistor TR6 is turned on with a bias voltage formed through diode D7. At this time, the relay RL2 is operated by the transistor TR6 to open the BT1 (+ terminal) which is one of the terminals of the battery (not shown) to cut off the emergency power of the battery (not shown) supplied to the LED3 70.

In the event of power failure, the bias circuit of transistor TR6 composed of diode D7 and resistors R20 and R18 is extinguished. Thus, transistor TR6 is turned off when the operation is stopped. At this time, operation of relay RL2 is stopped, so that BT1, which is a + pole of the battery (not shown), is stopped. It is connected to the + pole of LED3 70 via relay RL2 to turn on LED3 70 with the emergency power of the battery.

As shown in Fig. 1, LED3 70, which is a power LED, is connected to IC1 60, which acts as a current regulation IC.

Now, the charging unit 40 of the present invention will be described with reference to FIG. 4.

The power supplied from the smoothing cycle charges the emergency power battery (not shown) through the resistor R26 and the diode D11, where the resistor R26 is a resistor for delaying the charging speed. LED1 is a confirmation lamp indicating the charging state, and the charging voltage is determined by the diode D4 and the zener diode ZD2.

Initially, when the base voltage of transistor TR8 is normally biased and LED1 is turned on, but as charging progresses, when the zener voltage of D4 and ZD2 is reached, transistor TR8 is turned off and LED1 is turned off. C) reaches a full charge state. LED2 is a confirmation lamp for instructing whether or not the commercial power supply is turned on. The LED2 is turned on by a voltage drop of the resistor R27. However, the LED2 may have no configuration.

Now, the emergency controller 50 will be described with reference to FIG. 5.

When commercial power is supplied to AC (RED) line, rectification is made through diodes D12, D13, and D14 in conjunction with AC (BLACK), and power smoothed through resistor R29 and capacitor C7 turns on transistor TR7 with bias voltage of TR7. It is done.

The relay RL1 is operated by the operation of the transistor TR7, and the LED3 70 is turned off by opening the anode side of the diode D8 of the LED power supply 30.

Apart from the operation of the emergency control unit 50, the charging of the battery (not shown) is continued except in case of power failure.

According to the present invention, it is possible to implement a long-life emergency induction lamp that can be miniaturized / low cost while considering the stability of the current in implementing an emergency induction lamp using the LED as a light source.

In addition, by adopting a fuse suitable for the emergency induction lamp by using a poly switch, and adopting a relay that can reliably isolate the commercial power supply and emergency power of the emergency induction lamp according to time and use, it is possible to turn on / off the LED in a timely manner Emergency induction lights can be implemented.

Claims (5)

In the emergency induction lamp using LED as a light source, A power input unit receiving an AC power source to be supplied to a driving circuit of the emergency induction lamp and including a rectifying unit converting an AC voltage according to the AC power source into a first DC voltage; A switching regulator unit outputting the first DC voltage as a second DC voltage; An emergency control unit having a relay circuit in which driving is stopped in case of a power failure and in which the driving is controlled by an administrator; Controlled by the output of the relay circuit, the second DC voltage is transformed into a third DC voltage lower than the second DC voltage to supply as a general power supply of the LED in daily life, emergency power in case of power failure or emergency An LED power supply for supplying the LED and connecting the LED to a current regulation IC; And Is provided with a charging unit for charging the emergency power by the general power, And the power input unit includes a switching device for testing the LED power supply unit in case of power failure or emergency. The method of claim 1, The power input unit includes a first automatic recovery fuse for overcurrent protection of the AC power, the LED power supply unit includes a second automatic recovery fuse for overcurrent protection of the emergency power, And the first automatic recovery fuse and the second automatic recovery fuse are poly switches. The method of claim 1, The emergency power is emergency induction lamp, characterized in that installed insulated from the relay and the general power of the LED. The method according to any one of claims 1 to 3, The LED is an emergency induction light, characterized in that the power LED. The method according to any one of claims 1 to 3, The charging unit may include a separate light source for displaying the state of charge.

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