KR20080045357A - Leading emergency exit - Google Patents

Abstract

An emergency exit lamp is provided to improve durability and to reduce a size and a cost by using low-cost and small flyback transformer and switching element. An emergency exit lamp includes a power input unit(10), a switching regulator unit(20), a power supply unit(30), a charge unit(40), and an emergency control unit(50). The charge unit includes a first light emitting unit, a second light emitting unit, a battery charge unit(41), a charge voltage supply unit(42), a charge voltage control unit(43), and a switching element. The first light emitting unit displays a charge state and an error of a battery. The second light emitting unit displays a power supply state. The battery charge unit charges the battery by supplying emergency power to the battery. The charge voltage supply unit supplies a charge voltage to the battery charge unit. The charge voltage control unit controls a level of the voltage applied to the charge voltage supply unit. The switching element controls the level of the voltage applied to the charge voltage control unit.

Description

Emergency induction light {LEADING EMERGENCY EXIT}

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

FIG. 2 is a circuit diagram illustrating an embodiment of a power input unit and a switching regulator unit of FIG. 1. FIG.

3 is a circuit diagram illustrating an embodiment of the power supply unit of FIG. 1.

4 is a circuit diagram illustrating an embodiment of the charging unit of FIG. 1.

5 is a circuit diagram illustrating an embodiment of the emergency control unit of FIG. 1.

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

10: power input unit 20: switching regulator unit

30: power supply unit 40: charging unit

50: emergency control unit 41: battery charging unit

42: charge supply unit 43: charge voltage control unit

The present invention relates to an emergency induction lamp, and more particularly, to an emergency induction lamp that simplifies the circuit structure by using a low-cost device to improve productivity and economy.

In general, the emergency induction lamp is the same as the information display board for use in the event of an emergency such as a fire in a building, and performs emergency functions to safely guide a person to an emergency exit using emergency power, and normally It is a fire-fighting induction lamp that illuminates the display surface.

In other words, the emergency induction lamp functions to guide the emergency escape direction by using light in order to find out the location of the emergency exit more easily in case of an emergency such as a fire.

Such emergency induction lamps have been developed in various ways due to its convenience and necessity. In particular, recently, emergency induction lamps using a LED (LuminEscent Diode or Light Emitting Diode) display panel have been developed. Can be mentioned. This invention discloses the technique which improves visibility by installing LED in a heat resistant glass cover.

However, the emergency induction lamp using the LED as a light source is produced by using expensive and bulky devices such as down transformers and photocouplers in a circuit to receive power, and the production cost is high, the area consumption is high, and the circuit structure is complicated. There was a problem of low efficiency.

SUMMARY OF THE INVENTION The present invention has been made in view of the problems of the prior art as described above. By using a flyback transformer instead of a downtransformer and a switching element instead of a photocoupler, the circuit can be simplified, thereby minimizing / reducing cost while considering durability. The objective is to provide emergency guidance lights as far as possible.

In order to achieve the above object, the emergency induction lamp according to the present invention, in the emergency induction lamp including a power input unit, a switching regulator unit, a power supply unit, a charging unit and an emergency control unit, the charging unit is to indicate the state of charge and whether there is a battery abnormality A first light emitting unit, a second light emitting unit displaying a power supply state, a battery charging unit supplying and charging emergency power to the battery, a charging voltage supply unit supplying a charging voltage to the battery charging unit, and the charging voltage supply unit And a switching element for controlling the voltage level applied to the charging voltage controller and a switching element for controlling the voltage level applied to the charging voltage controller.

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

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

Emergency induction lamp of the present invention comprises a power input unit 10, a switching regulator unit 20, a power supply unit 30, a charging unit 40, and an emergency control unit 50.

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.

The power input unit 10 receives a commercial AC power to be supplied to the emergency induction lamp, rectifies an AC voltage according to the received AC power and applies a DC voltage to the switching regulator unit 20. To this end, the power input unit 10 includes a poly switch PS1, a surge observer VR1, a check switch SW1, a noise filter LF1, a resistor R1, and capacitors C2, C9, C10, and a diode D2.

The switching regulator 20 transfers the DC voltage applied from the power input unit 10 to the power supply unit 30 on the secondary side by dropping the voltage through the flyback transformer L1. To this end, the switching regulator 20 includes resistors R3, R15, R17, R20, R23, R24, capacitors C3, C4, C8, diodes D6, D7, transistors TR4, TR8, and flyback transformer L1. .

First, when commercial power is input to the AC power input terminals IN1-A and IN1-B of the power input unit 10, the input voltage passes through the noise filter LF1 via the surge observer VR1 and the polyswitch PS1. At this time, the capacitors C9, C10 and the noise filter LF1 act as a low pass noise filter, and serve to attenuate the switching noise of the transistor TR8.

The check switch SW1 cuts off the input power of the emergency induction lamp so as to check whether the charging unit 40 and the rechargeable battery (not shown) are abnormal.

The diode D2, the resistor R1, and the electrolytic capacitor C2 operate as rectifiers, and perform rectification / smoothing operations according to the power supply capacity of the switching regulator unit 20 and adjust voltage.

Resistors R24 and R15 divide the voltage at the output of diode D2 and resistor R1 and apply it to the input of transistor TR8. That is, transistor TR8 is switched by bias voltage through resistors R24 and R15.

Thereafter, the switching power of the transistor TR8 is induced to the secondary side through the flyback transformer L1 located between the switching regulator unit 20 and the power supply unit 30, and some power is induced again from the secondary side of the flyback transformer L1. The switching of transistor TR8 is maintained again by capacitor C4 and resistor R15. At this time, the transistor TR4 adjusts the feedback level of the voltage induced on the secondary side of the flyback transformer L1.

Now, an operation of the power supply unit 30 will be described in detail with reference to FIG. 3, which illustrates the power supply unit 30 among the components of FIG. 1.

The power supply unit 30 of the present invention normally applies a DC power induced through a flyback transformer L1 to a high power light emitting diode (Power LuminEscent Diode) and the charging unit 40, and in an emergency, the battery terminals BT1-A, Emergency power applied from a battery (not shown) is applied to the high output light emitting diode (not shown) and the charging unit 40 through BT1-B.

To this end, the power supply unit 30 includes diodes D1, D5, D9, resistors R2, R6, R19, capacitors C1, C6, transistor TR7, and polyswitch PS2.

First, the voltage induced from the switching regulator 20 on the primary side to the secondary side is rectified through the diodes D1 and D5, and the diode D1 together with the capacitor C1 is an emergency induction light LED (not shown, OUT1-A terminal and OUT1-B). Connected to a terminal), and the diode D5 and the capacitor C6 constitute a smoothing circuit for power supply of the charging unit 40 of the battery (not shown). That is, the voltage applied through the diode D1 is applied to the high output light emitting diode (not shown) by the transistor TR7, and the voltage applied through the diode D5 is applied to the charging unit 40.

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

The charging unit 40 performs a function of charging emergency power to a battery (not shown) using the supplied input power INI-C. To this end, the charging unit 40 includes a light emitting diode LED1, LED2, the battery charging unit 41, the charging voltage supply unit 43, the charging voltage control unit 43, and resistors R14, R18, R21, R9, transistor TR3. do.

The light emitting diode LED1 displays the charging state through the state of charge and the abnormality of the battery, and the light emitting diode LED2 displays the state of the power supply.

The battery charger 41 includes a resistor R2 and a diode D4 to supply emergency power to a battery (not shown) to charge the battery. At this time, the resistor R2 is a resistor for delaying the charging speed.

The charging voltage supply unit 43 includes a resistor R5 and a transistor TR2 in series, and applies the power applied from the power supply unit 30 to the battery charger 41.

The charging voltage control unit 43 includes a resistor R12 and a zener diode ZD1 and uses the output thereof to control the transistor TR2. At this time, the charging voltage of the battery charger 41 is determined by the zener diode ZD1.

Transistor TR3 is driven by the voltages biased by resistors R14 and R18 to apply a constant voltage to the input of Zener diode ZD1.

When the charging unit 40 having the above configuration is not charged due to an abnormality of a battery (not shown) or when the battery (not shown) is not connected, the charging unit 40 turns on the LED LED1, whereby the LED LED1 is simply charged. In addition to displaying the status, it is possible to perform a function of indicating a defective battery or a blown fuse.

On the other hand, the light emitting diode LED1 is turned on by a power supply having a voltage drop by the resistor R21, and may not be included.

In addition, the charging unit 40 may display the power supply state by turning on the light emitting diode LED2 when the supply voltage is applied from the power supply unit 30 and turning off the light emitting diode LED2 during power failure or when no voltage is applied.

Hereinafter, the emergency controller 50 will be described in detail with reference to FIG. 5.

The emergency control unit 50 of the present invention, when the general power is cut off in an emergency, the power supply unit 30 inputs the input voltage input from the battery voltage terminals INI-A and INI-B to the high output light emitting unit (not shown) by the emergency power. Control to supply emergency power of a battery (not shown). That is, in normal times, the power supply unit 30 applies the second voltage induced by the flyback transformer L1 to the high output light emitting unit (not shown), and in emergency, emergency power is supplied by the emergency control unit 50 to the high output light emitting unit (not shown). Supply).

For this purpose, the emergency controller 50 includes a diode D3, resistors R8, R11, R16, R22, capacitor C7, photocoupler PC1, and transistors TR5, TR6.

First, the IN1-C line is used as a control line to control the on / off of the POWER LED. When commercial power is applied to the IN1-C line, it is rectified through the diode D3 and the capacitor C7 in connection with the input voltage terminal IN1-B.

Thereafter, the photo coupler PC1 turns on the internal high output light emitting unit (not shown) and drives the internal photo transistor (not shown) to control the transistors TR5 and TR6 through the output. That is, the power smoothed through resistor R8 and capacitor C7 operates photocoupler PC1 through resistor R11, and the bias voltage of photocoupler PC1 controls transistors TR5 and TR6.

Here, the photo coupler PC1 is electrically connected to the C and E ends of the light receiving element only when electric current flows through the A (+) and K (-) ends of the light emitting element, thereby improving insulation and withstand voltage. do.

The transistors TR5 and TR6 are controlled by the output of the photo coupler PC1 of the emergency control unit 50 to switch the + line of the high output light emitting unit (not shown).

Apart from the operation of the emergency control unit 50, the charging of the battery (not shown) is preferably to be continued except during a power failure.

According to the present invention, by using a flyback transformer instead of the down-transformation, and by using a switching element instead of a photocoupler to implement an emergency induction lamp, it is possible to miniaturize / reduce the cost while considering the durability.

In addition, the preferred embodiment of the present invention is for the purpose of illustration, those skilled in the art will be able to various modifications, changes, substitutions and additions through the spirit and scope of the appended claims, such modifications and changes are the following practical claims It should be seen as belonging to a range.

Claims (5)

In the emergency induction lamp including a power input unit, a switching regulator unit, a power supply unit, a charging unit and an emergency control unit, The charging unit, A first light emitting unit displaying a charging state and a battery abnormality; A second light emitting unit displaying a power supply state; A battery charger for charging the battery by supplying emergency power; A charging voltage supply unit supplying a charging voltage to the battery charging unit; A charge voltage control unit controlling a voltage level applied to the charge voltage supply unit; And Emergency induction lamp comprising a switching element for controlling the voltage level applied to the charging voltage control unit. The method of claim 1, wherein the switching device, Emergency induction lamp comprising a transistor. The method of claim 1 or 2, wherein the charging voltage control unit, And a zener diode for regulating a constant voltage by the output of the switching element. The method of claim 1, wherein the switching regulator unit, A first switching element switched by the voltage received from the power input unit and outputting a first voltage; A flyback transformer for inducing the first voltage to a second voltage; And And a second switching device for adjusting a feedback level of the secondary induced voltage of the flyback transformer. The method of claim 4, wherein the switching regulator unit, A distribution unit for distributing the voltage received from the power input unit and applying the voltage to the input terminal of the first switching element; And And a capacitor for maintaining the driving of the first switching element by using the secondary induced voltage of the flyback transformer.

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