KR20170088633A - Emergency lighting apparatus with sensor lighting - Google Patents

Abstract

Disclosed is an emergency lighting apparatus with a sensor lamp. The present invention can be used as a sensor lamp when external power is supplied and can be used as an emergency lamp when external power is blocked. The present invention comprises: an AC-DC conversion unit which receives AC power from an external power source and outputs DC power by converting the received AC power into DC power; a battery unit which is charged by the DC power outputted from the AC-DC conversion unit; a lighting unit which illuminates by DC power outputted from the AC-DC conversion unit or DC power discharged from the battery unit; a control unit which determines whether a person exists nearby and outputs a sensor switch control signal depending on the determination result; and a switching unit which includes a contact switchover switch including a plurality of contact terminals and connecting the AC-DC conversion unit with the lighting unit or the battery unit or connecting the battery unit with the lighting unit by converting a contact point between the plurality of contact terminals according to the supply of the external power source, and a sensor switch connected between the AC-DC conversion unit and the contact switchover switch and performing a switching operation according to the sensor switch control signal.

Description

{EMERGENCY LIGHTING APPARATUS WITH SENSOR LIGHTING}

More particularly, the present invention relates to an emergency lighting apparatus combined with a sensor used as a sensor when an external power is supplied and used as an emergency light when an external power source is shut off.

An elevator hall or stairway of an apartment or a building is provided with a sensor that lights up according to the approach of a person, and an emergency lighting lamp that lights up in an emergency such as a power failure to guide the evacuation passage. In this case, when the sensor and the emergency light are installed separately, the space is not efficiently utilized, and installation work is troublesome.

In recent years, an emergency lighting apparatus such as a sensor that operates as an emergency light using a power source of a battery has been used in an emergency situation where the external power is supplied and the supply of the external power is interrupted.

However, in the conventional emergency lighting system combined with a sensor or the like, a power supply detection sensor for detecting whether or not an external power supply is supplied is required. In order to operate one of the lights as a sensor or emergency light depending on whether external power is supplied or not There is still a problem that the electric wiring is complicated as a whole and the installation cost is accordingly increased because a plurality of switching elements are required.

According to one aspect of the present invention, a sensor is used when an external power source is supplied by using a connection switch for switching a contact point between a plurality of connection terminals according to whether an external power source is supplied, and a sensor Thereby providing a combined emergency lighting apparatus.

According to an aspect of the present invention, there is provided an emergency lighting system for use with a sensor or the like, comprising: an AC-DC converter for receiving AC power from an external power source and converting the AC power to DC power and outputting the DC power; A battery unit, a DC power source output from the AC-DC conversion unit or a DC power source discharged from the battery unit, and a controller for determining whether the illumination unit is turned on or off according to a surrounding situation, DC converter and the lighting unit or the battery unit according to whether the external power source is supplied or not, the contact point between the plurality of connection terminals is switched to connect the AC-DC converter unit to the lighting unit or the battery unit, A connection changeover switch for connecting the illumination unit and the connection switching switch connected between the AC-DC conversion unit and the connection changeover switch It includes the switching part comprising a sensor switch for switching operation based on the sensor switch control signal.

The sensor unit senses a surrounding situation including at least one of the human body, the illuminance, and the temperature of the surroundings and transmits the sensed ambient condition to the control unit. The sensor unit is connected to the connection switch and the other end is connected to the illumination unit, And a driving unit connecting the battery unit and the illumination unit according to the switching operation of the switch.

The control unit includes a control unit AC-DC conversion unit that receives AC power from the external power source and converts the AC power into DC power and outputs the DC power, And a control signal generating unit for generating and outputting the sensor switch control signal for turning on the sensor switch for a predetermined time when it is determined by the sensor signal comparing unit that the illumination unit should be turned on, Generating unit.

The apparatus may further include a discharge current adjusting unit disposed between the driving unit and the connection switch to limit a discharge current discharged from the battery unit to the illumination unit.

The charging unit may further include a charging current adjusting unit provided between the AC-DC converting unit and the connection switching switch to limit a charging current charged from the AC-DC converting unit to the battery unit.

The connection switch may include a relay coil connected to the AC-DC converter, a first terminal connected to the sensor switch, a second terminal connected to the first terminal, a third terminal connected to the illumination unit, A fourth terminal connected to the battery unit, a fifth terminal connected to one end of the driving unit, and a sixth terminal connected to the AC-DC converter.

The sensor switch may have one end connected to the AC-DC converter and the other end connected to the first terminal.

In addition, when the predetermined power is supplied from the AC-DC converter to the relay coil, the connection switch is connected to the first terminal and the third terminal, Is connected to the fourth terminal and the sixth terminal, and the battery is charged by the DC power outputted from the AC-DC converter, and the AC DC converter to the relay coil, the first terminal and the second terminal are connected to cut off the power supply from the AC-DC converter to the illumination unit, and the fourth terminal Terminal is connected to the fifth terminal, and the battery unit and the illumination unit can be connected by the driving unit.

The switching unit may further include a check switch connected between the AC-DC converter and the relay coil.

According to an aspect of the present invention, there is provided an emergency lighting apparatus for a sensor or the like that uses a connection switch for switching a contact point between a plurality of connection terminals according to whether an external power source is supplied, It is possible to secure stability in use as an emergency light, and can be implemented more simply, which is efficient in terms of manufacturing cost, installation cost, or energy consumption.

1 is a control block diagram of an emergency lighting apparatus for a sensor or the like according to an embodiment of the present invention.
2 is a diagram showing an example of the AC-DC converter shown in FIG.
3 is a detailed block diagram of the control unit shown in FIG.
4 is a diagram showing an example of a connection switching switch included in the switching unit shown in FIG.
5 to 8 are diagrams showing current flows according to the switching operation of the switching unit shown in FIG.

The following detailed description of the invention refers to the accompanying drawings, which illustrate, by way of illustration, specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It should be understood that the various embodiments of the present invention are different, but need not be mutually exclusive. For example, certain features, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the invention in connection with an embodiment. It is also to be understood that the position or arrangement of the individual components within each disclosed embodiment may be varied without departing from the spirit and scope of the invention. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present invention is to be limited only by the appended claims, along with the full scope of equivalents to which such claims are entitled, if properly explained. In the drawings, like reference numerals refer to the same or similar functions throughout the several views.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the drawings.

1 is a control block diagram of an emergency lighting apparatus for a sensor or the like according to an embodiment of the present invention.

1, an emergency lighting apparatus 1 including a sensor and the like according to an embodiment of the present invention includes an AC-DC conversion unit 110, a sensor unit 120, a control unit 130, a display unit 140, And may include a charging unit 150, a charging current regulator 161, a discharging current regulator 162, a battery unit 160, a driving unit 170, and an illumination unit 180, When the external power is supplied, the lighting apparatus 1 is used as a sensor that is turned on according to the surrounding situation when the external power is supplied. When the external power is cut off, the lighting apparatus 1 is turned on by the pre- It can be used as an emergency light to induce evacuation. The emergency lighting apparatus 1 for use with a sensor or the like according to an embodiment of the present invention may be implemented by a number of elements or by fewer elements than the elements shown in Fig. Hereinafter, the above-mentioned constituent elements will be described in detail.

First, the AC-DC converter 110 can receive AC power from an external power source. Also, the AC-DC converting unit 110 can convert AC power inputted from an external power source into DC power and output it. For this purpose, the AC-DC converter 110 may be implemented by various types of transformers for converting AC power into DC power. For example, the AC-DC converter 110 may be implemented by a circuit as shown in FIG. 2 is a diagram showing an example of the AC-DC converter shown in FIG.

Referring to FIG. 2, the AC-DC converter 110 includes a transformer TR1, a plurality of diodes D1 to D4, a switch Q1 and the like, receives AC power from an external power source, The power supply can be rectified and then dropped to output a predetermined DC power.

The DC power output from the AC-DC converter 110 may be supplied to the switching unit 150 to turn on the switching unit 150. The DC power may be supplied to the illumination unit 180, or the battery unit 160, as shown in FIG. On the other hand, when the AC-DC converting unit 110 does not receive the AC power from the external power source, that is, when the supply of the external power is interrupted due to the occurrence of emergency such as power failure or fire, the AC- The DC power can not be output from the switching unit 150, and thus the switching unit 150 is turned off. A detailed description thereof will be given later.

The controller 130 receives external power separately from the AC-DC converter 110 and generates a control signal according to a result of sensing the ambient condition of the sensor unit 120 to control the switching unit 150 have. In addition, the controller 130 may detect the charging voltage of the battery unit 160 and analyze the charging voltage to limit the charging of the battery unit 160. [ In addition, the controller 130 may output the external power or the charging status of the battery unit 160 through the display unit 140. For this, the controller 130 may be configured as shown in FIG. 3 is a detailed block diagram of the control unit shown in FIG.

3, the control unit 130 includes a controller AC-DC converter 131, a sensor signal comparator 132, a battery voltage comparator 133, and a control signal generator 134 can do. The control unit 130 may be implemented by, or implemented by, more components than the components shown in FIG. Hereinafter, the above-mentioned constituent elements will be described in detail.

First, the control unit AC-DC conversion unit 131 can receive AC power from an external power source. At this time, the control unit AC-DC conversion unit 131 can receive the AC power from the external power source separately from the AC-DC conversion unit 110 described above. Also, the control unit AC-DC conversion unit 131 can convert the AC power input from the external power supply into the DC power and output it. To this end, the control unit AC-DC conversion unit 131 may be implemented by a circuit as shown in FIG. 2, for example. A detailed description related to FIG. 2 will be omitted.

The DC power output from the controller AC-DC converter 131 can operate the controller 130. That is, the sensor signal comparator 132, the battery voltage comparator 133, and the control signal generator 134 perform a predetermined operation by the DC power source output from the controller AC-DC converter 131, Can be generated and output.

As described above, the combined emergency lighting apparatus 1 according to the embodiment of the present invention can separate the operation power of the illumination unit 180 and the operation power of the control unit 130. FIG. That is, the lighting unit 180 is operated by a DC power source output from the AC-DC converting unit 110, and the control unit 130 is controlled by a DC power source output from the control unit AC-DC converting unit 131 Can operate. Accordingly, the combined emergency lighting apparatus 1 according to the embodiment of the present invention can reduce the power consumption and improve the power efficiency by separating the operation power of the illumination unit 180 and the control unit 130. FIG.

On the other hand, the sensor unit 120 can also be operated by a DC power source output from the control unit AC-DC converter 131. [ That is, the sensor unit 120 receives the DC power from the controller 130, detects the surrounding situation, and transmits the result to the controller 130. For example, the sensor unit 120 may detect a surrounding situation by turning on the illumination unit 180 according to a result of the detection. For example, May include at least one of various known human body detection sensors, illumination detection sensors, or temperature detection sensors. The sensor unit 120 senses whether a person is present within a predetermined radius, the amount of light or temperature, and outputs the result to the control unit 130 so that the control unit 130 can control the illumination unit 180 according to the surrounding environment. .

3, the sensor signal comparison unit 132 receives the output signal of the sensor unit 120 and analyzes the output signal to determine whether the illumination unit 180 should be turned on. For example, the sensor signal comparing unit 132 compares a signal output from the sensor unit 120 with a previously stored reference signal, and determines whether there is a person around, whether the illuminance is low, And whether or not it has occurred. At this time, the sensor signal comparator 132 determines that the person is present in the vicinity, or determines that the surroundings are dark due to the illuminance being lower than a predetermined reference value, or determines that the lighting unit 180 should be turned on . ≪ / RTI >

Also, the battery voltage comparator 133 can detect the charged state of the battery unit 160 and analyze the battery voltage to determine the state of charge of the battery unit 160. That is, the battery voltage comparator 133 can determine whether the battery unit 160 is currently in a buffered state. For example, the battery voltage comparing unit 133 may determine whether the battery unit 160 is in a buffered state by comparing the voltage of the battery unit 160 with the magnitude of a reference voltage stored in advance.

Meanwhile, the battery unit 160 may be implemented as various types of battery modules capable of charging / discharging electric power. For example, the battery unit 160 may be implemented as a lithium battery.

3, the control signal generator 134 may generate and output a predetermined control signal according to a determination result of the sensor signal comparator 132 or the battery voltage comparator 133. [

Specifically, the control signal generator 134 outputs or does not output the sensor switch control signal according to the determination result of the sensor signal comparator 132, and switches the sensor switch 152 included in the switching unit 150, The operation can be controlled. The control signal generating unit 134 outputs a sensor switch control signal when the sensor signal comparing unit 132 determines that the illumination unit 180 is to be turned on so that the sensor switch 152 is turned on can do. At this time, the control signal generator 134 may apply the sensor switch control signal to the sensor switch 152 for a predetermined time. In this case, as the sensor switch 152 is turned on, the illumination unit 180 may be turned on for a predetermined period of time by receiving the DC power output from the AC-DC converter 110. On the other hand, when it is determined by the sensor signal comparator 132 that there is no person around by the sensor signal comparator 132, the control signal generator 134 controls the sensor switch 152 to turn off can do. In this case, as the sensor switch 152 is turned off, the lighting unit 180 can not be turned on because the supply of the DC power output from the AC-DC converter 110 is cut off. A detailed description thereof will be given later.

Also, the control signal generator 134 may control the operation of the charge current controller 161, which will be described later, by outputting or not outputting the battery charge switch control signal according to the determination result of the battery voltage comparator 133. The control signal generator 134 outputs a battery charge switch control signal to the charge current controller 161 to determine whether the battery 160 is in a buffer state by the battery voltage comparator 133, And controls the connection of the conversion unit 110 and the battery unit 160 to be cut off. If it is determined by the battery voltage comparison unit 133 that the battery unit 160 is not in a buffered state, So that it is possible to prevent the AC-DC converter 110 and the battery unit 160 from being disconnected by the charge current controller 161. Here, the control signal generator 134 may perform this operation when the charge current controller 161 is implemented as a MOSFET switch.

More specifically, the charge current regulator 161 is connected between the AC-DC converter 110 and the battery unit 160 to shut off the power supplied from the AC-DC converter 110 to the battery unit 160 . In this case, since the battery unit 160 can be charged by the DC power source output from the AC-DC converter 110, when the external power source is continuously supplied, the AC- DC converter 110 to continuously supply the DC power and shorten its service life. The charging current regulator 161 for limiting the current supplied from the AC-DC converter 110 to the battery unit 160 according to the charged state of the battery unit 160 is connected to the AC-DC converter 110 And the battery unit 160, as shown in FIG.

The charge current regulator 161 may cut off the connection between the AC-DC converter 110 and the battery unit 160 in various manners. For example, as described above, the charge current regulator 161 may be implemented as a MOSFET switch that is turned on or off according to a battery charge switch control signal output from the control signal generator 134. Alternatively, the charge current regulator 161 may include one resistor having a resistance value corresponding to a voltage value reflecting a minimum value and a maximum value of the difference between the output voltage of the AC-DC converter 110 and the buffer voltage of the battery unit 160 Lt; / RTI > Alternatively, the charge current regulator 161 may include elements such as a zener diode, a general diode, an Op-amp, and the like, and may be provided for each section of the difference between the output voltage of the AC-DC converter 110 and the buffer voltage of the battery unit 160 The current can be limited.

The control signal generating unit 134 may generate a control signal for turning on the display unit 140 according to whether external power is supplied or whether the battery unit 160 is buffered. At this time, the control signal generating unit 134 generates a control signal for controlling the display unit 140 so that the display unit 140 may be turned on differently depending on whether the external power is supplied or the battery unit 160 is fully charged Signal can be generated. For example, the control signal generating unit 134 may generate a control signal for controlling the display unit 140 so that green light may be turned on when external power is supplied, A red light may be turned on if the voltage is higher than a predetermined voltage, and a control signal may be generated to control the display unit 140 to turn off the red light when the voltage is lower than a predetermined voltage.

The display unit 140 may be turned on under the control of the controller 130. That is, the display unit 140 may be turned on when a predetermined signal is received from the control signal generating unit 134. At this time, the display unit 140 receives DC power from the control unit AC-DC converting unit 131, . For example, the display unit 140 may be implemented with a plurality of light emitting diodes so that lights of different colors may be lighted.

The switching unit 150 includes a connection switch 151 that is operated by a DC power source that is output from the AC-DC converter 110 and a sensor switch 151 that is operated under the control of the controller 130, And an inspection switch 153 for testing whether or not it can operate as the emergency lamp 152 and the emergency lamp or the like. In this regard, a detailed description will be made with reference to Figs. 4 to 8. Fig. FIG. 4 is a view showing an example of a connection switching switch included in the switching unit shown in FIG. 1, and FIGS. 5 to 8 are views showing a current flow according to a switching operation of the switching unit shown in FIG.

4, the connection changeover switch 151 may include a relay coil 151a and a first terminal 151-1 to a sixth terminal 151-6. The relay coil 151a is connected to the output terminal A of the AC-DC converter 110 and generates a magnetic force by receiving DC power from the AC-DC converter 110. The relay coil 151a is connected to the first terminal 151-1 To the sixth terminal 151-6 can be switched by the magnetic force generated from the relay coil 151a.

Specifically, the connection switch 151 is connected to the first terminal 151-1 and the second terminal 151-2 in the turn-off state in which no current is supplied to the relay coil 151a, The terminal 151-4 and the fifth terminal 151-5 may be connected. On the other hand, when a DC power is supplied from the AC-DC converter 110 to the relay coil 151a to generate a magnetic force, the connection changeover switch 151 switches between the first terminal 151-1 and the third terminal 151-1, And the fourth terminal 151-4 and the sixth terminal 151-6 may be connected. As described above, the connection change-over switch 151 is turned on only when the DC power is supplied from the AC-DC converter 110, that is, when external power is supplied to the first terminal 151-1 and the third terminal 151 -3) may be connected, and the fourth terminal 151-4 and the sixth terminal 151-6 may be connected.

5 to 7, in the emergency lighting apparatus 1 for a sensor or the like according to an embodiment of the present invention, when external power is supplied by using the feature of the connection changeover switch 151, When the supply of external power is cut off, it can be used as an emergency light. The first terminal 151-1 is connected to the other end of the sensor switch 152 and the third terminal 151-3 is connected to the illumination unit 180 and the fourth terminal 151-4 is connected to the battery unit 160. [ The fifth terminal 151-5 may be connected to the driving unit 170 and the sixth terminal 151-6 may be connected to the output terminal A of the AC-DC converter 110. [ At this time, one end of the sensor switch 152 may be connected to the output terminal A of the AC-DC converter 110, and the driving unit 170 may be connected to the illumination unit 180. Accordingly, when the external connection is made and the connection switch 151 is turned on, the emergency lighting apparatus 1 for use with a sensor or the like according to an embodiment of the present invention is connected to the first terminal 151-1 and the third terminal 151-3 The direct current power outputted from the AC-DC converter 110 is transmitted to or blocked from the illumination unit 180 according to the switching operation of the sensor switch 152 and the fourth terminal 151-4 and the sixth Terminal 151-6 may be connected to transmit the DC power output from the AC-DC converter 110 to the battery unit 160. [ On the other hand, when the external power is cut off and the connection change-over switch 151 is turned off, the fourth terminal 151-4 and the fifth terminal 151-5 are connected to the power source stored in the battery unit 160, 170 to the illumination unit 180 so that the illumination unit 180 can be turned on.

5, when it is determined that the external power is supplied and the lighting unit 180 is not turned on by the control unit 130, for example, The DC power output from the AC-DC converting unit 110 may be supplied to the battery unit 160 to charge the battery unit 160. In this case, At this time, the power supply to the illumination unit 180 is cut off by the sensor switch 152, so that the illumination unit 180 can not be turned on. That is, when the external power is supplied, the AC-DC converting unit 110 can output the DC power, which can be transmitted to the relay coil 151a to turn on the connection switch 151. The first terminal 151-1 and the third terminal 151-3 and the fourth terminal 151-4 and the sixth terminal 151-6 may be connected when the connection changeover switch 151 is turned on. At this time, the sensor switch 152 can not be turned on by the control unit 130. Therefore, although the first terminal 151-1 and the third terminal 151-3 are connected to each other, the illumination unit 180 is turned off from the AC-DC converter 110 by the turn-off of the sensor switch 152, It can not be turned on because it can not receive power. On the other hand, as the fourth terminal 151-4 and the sixth terminal 151-6 are connected, the battery unit 160 can be charged by receiving the DC power from the AC-DC converter 110. [ The charging current regulator 161 is connected between the output terminal A of the AC-DC converter 110 and the sixth terminal 151-6. The charging current regulator 161 is connected between the output terminal A of the AC- DC conversion unit 110 to the battery unit 160. [0050] FIG.

6, when it is determined that the external power is supplied and the lighting unit 180 is to be turned on by the control unit 130, for example, if there is a person in the vicinity, The DC power output from the AC-DC converting unit 110 may be supplied to the illumination unit 180 and the battery unit 160 to light the illumination unit 180, Can be charged. In this case, the first terminal 151-1 and the third terminal 151-3 are connected to each other as the sensor switch 152 and the connection change-over switch 151 are both turned on, and the lighting unit 180 is connected to the AC- DC converter 110 and the fourth terminal 151-4 and the sixth terminal 151-6 are connected to each other and the battery unit 160 is connected to the AC- 110 and may be charged with DC power. It is needless to say that the charge current of the battery unit 160 can be limited by the charge current controller 161 as described above.

7, when the external power supply is cut off due to an emergency such as a power failure or a fire, the power stored in the battery unit 160 is transmitted to the lighting unit 180 through the driving unit 170, The control unit 180 can be turned on. That is, when the external power supply is interrupted, the AC-DC converting unit 110 can not output DC power, and the controller 130 can not operate. In this case, the connection change-over switch 151 is turned off and the connection between the first terminal 151-1 and the second terminal 151-2, the fourth terminal 151-4 and the fifth terminal 151-5 Can be connected. Accordingly, the power stored in the battery unit 160 can be discharged to the illumination unit 180 through the driving unit 170, and the illumination unit 180 can be turned on. A discharge current control unit 162 is provided between the driving unit 170 and the fifth terminal 151-5 to limit a discharge current discharged from the battery unit 160 to the illumination unit 180. [

More specifically, the driving unit 170 is connected to the illuminating unit 180, so that when the connection switch 151 is turned off, the battery unit 160, the driving unit 170, and the illuminating unit 180 are connected So that the power of the battery unit 160 can be supplied to the illumination unit 180. The discharging current regulator 162 is connected between the driving unit 170 and the fifth terminal 151-5 so as to shut off the connection between the battery unit 160 and the driving unit 170. [ The discharge current regulator 162 can prevent the battery unit 160 from being completely discharged by blocking the connection between the battery unit 160 and the driving unit 170 when the voltage of the battery unit 160 is lower than a predetermined voltage have. The discharge current regulator 162 may be implemented in various ways, for example, as a single resistor having a predetermined resistance value.

8, the check switch 153 may be connected between the relay coil 151a and the output terminal A of the AC-DC converter 110. [ At this time, the check switch 153 may be exposed to the outside so that the user can directly turn on or turn off the device. The user can turn off the check switch 153 to set the external power source to the off state so that the battery unit 160 can check whether the illumination unit 180 is turned on. That is, when the check switch 153 is normally turned on and is turned off by the user, the supply of power from the AC-DC converter 110 to the relay coil 151a is interrupted, and the connection switch 151 is turned The battery unit 160, the driving unit 170 and the illumination unit 180 are connected to each other so that the lighting unit 180 can be turned on by the power of the battery unit 160. [ As described above, since the external power source can be intentionally shut off by using the check switch 153, even when the external power source is normally supplied, the emergency light device 1 for a sensor or the like according to the embodiment of the present invention is turned on It is possible to monitor whether or not it can operate as an emergency light or the like and to perform maintenance accordingly.

The illumination unit 180 may be turned on by a DC power source output from the AC-DC converter 110 according to the switching operation of the switching unit 150 or may be turned on by a DC power source discharged from the battery unit 160 have. That is, the illumination unit 180 can operate as a sensor or the like that is turned on by the DC power output from the AC-DC converter 110 according to a surrounding situation sensed by the sensor unit 120 in a normal situation in which external power is supplied And can operate as an emergency light that is illuminated by a DC power source discharged from the battery unit 160 in an emergency situation in which the external power source is shut off. This illumination unit 180 may be embodied as a light emitting diode array (LED ARRAY), for example. In addition, the illumination unit 180 may be implemented in a shape that suggests a direction so as to induce evacuation of people in an emergency situation.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined in the appended claims. It will be possible.

1: Emergency lighting device combined with sensor

Claims (9)

An AC-to-DC converter that receives AC power from an external power source and converts the DC power into DC power and outputs the DC power;
A battery unit that is charged by a DC power source output from the AC-DC converter;
A lighting unit that is turned on by a DC power outputted from the AC-DC converter or a DC power discharged from the battery;
A controller for determining whether the illumination unit is turned on according to a surrounding situation and outputting a sensor switch control signal according to a result of the determination; And
A plurality of connection terminals, and a contact point between the plurality of connection terminals is switched according to whether the external power source is supplied to connect the AC-DC conversion unit to the illumination unit or the battery unit or to connect the battery unit and the illumination unit And a switching section connected between the AC-DC converting section and the connection switching switch, the switching section including a sensor switch for switching in accordance with the sensor switch control signal. The method according to claim 1,
A sensor unit for sensing a surrounding situation including at least one of a human body, an illuminance, and a temperature, and transmitting the detected ambient condition to the controller; And
Further comprising a driving unit connected at one end to the connection changeover switch and at the other end to the illumination unit for connecting the battery unit and the illumination unit according to the switching operation of the connection changeover switch. 3. The method of claim 2,
Wherein,
A control unit AC-to-DC converting unit that receives AC power from the external power supply and converts the AC power into DC power and outputs the DC power;
A sensor signal comparing unit for receiving a signal from the sensor unit to sense a surrounding situation and determining whether the illumination unit should be turned on; And
And a control signal generator for generating and outputting the sensor switch control signal for turning on the sensor switch for a predetermined time when it is determined by the sensor signal comparator that the illumination unit should be turned on, Lighting device. 3. The method of claim 2,
And a discharge current adjusting unit provided between the driving unit and the connection switching switch for limiting a discharge current discharged from the battery unit to the illumination unit. 3. The method of claim 2,
And a charge current adjusting unit provided between the AC-DC converting unit and the connection switching switch for limiting a charging current charged from the AC-DC converting unit to the battery unit. 3. The method of claim 2,
Wherein the connection change-
A relay terminal connected to the AC-DC converter, a first terminal connected to the sensor switch, a second terminal connected to the first terminal, a third terminal connected to the illumination unit, a fourth terminal connected to the battery unit, A fifth terminal connected to one end of the driving unit, and a sixth terminal connected to the AC-DC converter. The method according to claim 6,
The sensor switch includes:
And a sensor connected to the AC-DC converter and having one end connected to the AC-DC converter and the other end connected to the first terminal. 8. The method of claim 7,
Wherein the connection change-
Wherein when the predetermined power is supplied from the AC-DC converter to the relay coil, the first terminal is connected to the third terminal, and the DC power output from the AC-DC converter is switched to the switching operation of the sensor switch And the fourth terminal is connected to the sixth terminal, and the battery is charged by the DC power outputted from the AC-DC converter,
Wherein when the predetermined power is not applied to the relay coil from the AC-to-DC converter, the first terminal and the second terminal are connected to cut off power supply from the AC-DC converter to the illumination unit, And the fourth terminal is connected to the fifth terminal, and the battery unit and the illumination unit are connected by the driving unit. 9. The method of claim 8,
The switching unit includes:
And an inspection switch connected between the AC-DC converter and the relay coil.

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