KR101253034B1 - Emergency led illumination device for fire prevention - Google Patents

Abstract

PURPOSE: An emergency LED device for preventing a fire is provided to enable people to evacuate a dangerous zone by providing light of a long wavelength in an emergency situation. CONSTITUTION: A lighting unit(110) is received in a housing. Long wavelength LEDs are alternatively arranged on a substrate in the lighting unit. A switching module(180) forms a current path from the lighting unit. An SMPS(Switching Mode Power supply) temperature sensor is formed in an SMPS(140). A sensor module(120) includes a smoke sensor and a temperature sensor. [Reference numerals] (120) Sensor module; (130) Control unit; (142) Fire sensor; (150) Charging unit; (160) Battery; (171) First current driver; (172) Second current driver; (181) Manual SW;

Description

Emergency LED illumination device for fire prevention

The present invention relates to an LED lighting device, and more particularly, to an emergency LED lighting device for fire prevention to cope with overheating and external fire in the equipment, and to improve visibility by projecting long wavelength light when an external fire occurs. .

Normally, the emergency lighting device is usually driven by using commercial AC, and charged with a rechargeable battery, and when an emergency occurs, the charged battery is configured to guide the evacuation direction or a dangerous situation. Such an emergency lighting device is configured to emit white light in both normal and emergency, and the time for emitting light in the emergency lighting device is determined according to the capacity of the battery and the state of charge.

White light emitted by a general emergency lighting device has a characteristic that it is difficult to propagate over a long distance due to the large scattering in the atmosphere and the light permeability by the fog, smoke, and dust are significantly weakened compared to the long wavelength light such as red like the blue light. .

It is known that the final amount of light at which the light of blue (B), green (G), and red (R) reaches a target in a misty atmosphere in the atmosphere is usually about 1: 3: 9. In other words, the white light emitted from a general emergency lighting device is difficult to propagate at a long distance in an emergency situation in which smoke or dust is generated.

For this problem, Patent Publication No. 10-2006-120757 uses a rectifier circuit, a battery, a power conversion switch, an emergency detection sensor, and a sensor for detecting the temperature of the lamp to provide a road lighting apparatus that controls the lamp output when the lamp is hot. I have suggested. Patent Document 10-2006-120757 has advantages over conventional street lamp lighting in terms of controlling the lamp output against lamp overheating and using yellow LEDs with good visibility, but the ability to distinguish ambient fire from internal heat generation none.

On the other hand, the emergency LED lighting device is turned on and off by using the DC power provided by the Switching Mode Power Supply (SMPS), there is a risk of burnout by the overheating of the SMPS, if there is a fire in the surrounding, it is separated separately You may not be able to.

For example, if the temperature sensor is built in the emergency LED lighting device, when the temperature rises abnormally, it is determined whether the temperature of the SMPS located inside the emergency LED lighting device is increased or the temperature outside the emergency LED lighting device is increased. It can be difficult to do.

It is an object of the present invention to provide a long-wavelength light for the evacuator in an emergency to increase the evacuation effect, to provide an emergency LED lighting device for fire prevention capable of actively coping with the internal and external fires.

According to the present invention, the above object is embedded in the ceiling, using a cover for light projection, a housing formed in a circular plate shape around the cover is exposed from the wall, and using a Switching Mode Power Supply (SMPS) In the emergency LED lighting apparatus comprising a battery for generating a constant power and is charged by the constant power supply to supply emergency power, the LED is stored in the housing, the long-wavelength LED to project the light of a long wavelength on the substrate Alternately arranged, and the light projection directions of the white light LED and the long wavelength LED are a lighting unit facing the cover, a switching module forming a current path between any one of the SMPS and the battery and the lighting unit, and an AC switching element of the SMPS SMPS temperature sensor provided on the side heat sink, exposed from the covering toward the light projection direction, smoke sensor and temperature When the temperature measured by the sensor module having a pair of sensors and the smoke concentration is outside the preset first average value range, and determines the external fire to control the switching module to use the emergency power, the SMPS When the measured value of the temperature sensor is out of the preset second average value range, one of the AC input terminal and the DC output terminal of the SMPS is blocked to block the temperature rise of the SMPS, and the measured temperature of the SMPS temperature sensor is the second average value. When the range is satisfied, it is achieved by a controller for releasing the blocking of one of the AC input terminal and the DC output terminal.

According to the present invention, the SMPS can be sensed by overheating and external fire, and correspondingly, the temperature rise of the SMPS can be blocked or emergency lighting can be provided in case of fire.

In addition, according to the present invention by driving a long-wavelength LED in an emergency to ensure a good watch for evacuation even when the watch is limited by smoke or dust.

1 is a perspective view of an emergency LED lighting device for fire protection according to an embodiment of the present invention.
Figure 2 shows an exploded perspective view of the emergency LED lighting apparatus shown in FIG.
FIG. 3 shows a reference view of how the white light LED and the long wavelength LED are arranged in the lighting unit.
4 is a block diagram of a lighting apparatus according to an embodiment of the present invention.
5 is a reference diagram for a control method of controlling a SMPS by a controller.
6 illustrates a reference view for another example in which the controller controls the SMPS.
7 illustrates a reference view for an example in which a cooling fan is mounted to a rear end cap.

Hereinafter, the present invention will be described in detail with reference to the drawings.

1 is a perspective view of an emergency LED lighting device for fire protection according to an embodiment of the present invention, Figure 2 shows an exploded perspective view of the emergency LED lighting device shown in FIG.

1 and 2, the emergency LED lighting device (hereinafter referred to as a lighting device) for the fire prevention is the housing 101, the cover 103, the covering 102, the sensor module 120, the AC input terminal ( 107, the heat dissipation holes 105 and 106, and the manual switch 181, and one region of the housing 101 may be configured as a heat dissipation net 104.

The housing 101 may be made of metal or plastic, and may be embedded in a buried hole (not shown) formed in the ceiling. Since the housing 101 is embedded in the ceiling, only the cover 103, the covering 102, the manual switch 181, and the sensor module 120 are exposed to the outside, and the remaining high flow input terminal 107, the heat dissipation ports 105 and 106, The heat dissipation net 104 may not be exposed to the outside of the ceiling. The lighting device may be coupled in the order of the covering 102, the cover 103, the lighting unit 110, and the housing 101. The rear end cap 109 provided at the rear end of the housing 101 may accommodate the SMPS 140, a heat sink 141 for dissipating heat of the SMPS 140, and a control circuit for controlling the lighting device. Since the lighting unit 110, the housing 101, and the rear end cap 109 are accommodated in a buried hole formed in the ceiling, the outside of the ceiling corresponds to the cover 103 and the covering 102. The cover 103 may be made of glass and plastic of a translucent material, and a separate diffusion sheet may be added for light diffusion.

The covering 102 closes the gap between the buried hole and the housing 101 such that the parts other than the cover 103 and the covering 102 are not exposed to the outside of the ceiling. In addition, the covering 102 allows the manual switch 181 and the sensor module 120 to be exposed to the outside to allow the manager to switch the power of the lighting device from the SMPS 140 to the battery. Of course, it is possible to detect the external fire occurrence of the ceiling. The illustrated sensor module 120 is composed of a set of a temperature sensor 121 and a smoke sensor 122 may be replaced by an ultraviolet sensor or a wavelength sensor.

For example, when a fire occurs in a space where an illumination device is installed, an ultraviolet sensor may replace the sensor module 120 to detect an ultraviolet ray in which a flame is generated and detect a fire occurrence.

In this case, the ultraviolet sensor may detect ultraviolet rays in the wavelength band of 160 nm to 260 nm, and detect the wavelength band generated when the flame and the metal react by using the ultraviolet rays.

On the other hand, it is also possible to detect the occurrence of a fire by using a wavelength sensor for detecting the wavelength band from which the flame of 800nm to 1200nm. Wavelength sensors can be used to detect the presence of fire by sensing the wavelength band caused by the flame.

The SMPS 140 converts commercial AC applied from the AC input terminal 107 into DC. In this case, since the SMPS 140 switches and commutates the commercial AC at regular intervals, most of the heat generated in the SMPS 140 is generated in the switching device. The operation and structure of the SMPS 140 performs noise filtering on the commercial AC, and then regulates the commercial AC applied to the transformer at regular intervals, rectifies the secondary voltage induced by the transformer, and rectifies the DC of the desired voltage. It is configured to generate, and the operation and structure of the SMPS 140 is conventional to those skilled in the art, so detailed description thereof will be omitted.

In the SMPS 140, the switching element generates heat in the process of switching the alternating current, and it is common to have a separate heat sink 141 for the switching element. The heat sink may be formed of aluminum, copper, silver, and stainless, and although not shown in the drawing, a cooling fan is disposed around the heat sink 141 to rapidly cool the heat sink. The cooling fan may directly blow wind toward the heat sink 141 or may create a flow of air around the heat sink 141 so that the heat of the heat sink 141 may be evenly spread around the housing 101. However, it is not limited.

FIG. 3 shows a reference view of how the white light LED and the long wavelength LED are arranged in the lighting unit.

Referring to FIG. 3, first, in FIG. 3A, a white light LED 112 is disposed in a region adjacent to the central portion A of the substrate 113, and a long wavelength LED is disposed in an outer side direction of the substrate 113. An example of arranging 111 is shown. Here, the long wavelength LED may refer to an LED having a longer wavelength range than a white or blue wavelength such as a red wavelength or a yellow wavelength. For example, the long wavelength LED may be an LED having a wavelength range of 550 nm to 700 nm.

FIG. 3B illustrates an example in which the long wavelength LEDs 111 are radially arranged in the A1, A2, A3, A4, and A5 directions with respect to the center A, and FIG. The long wavelength LED 115a is disposed, and the white light LEDs 116a to 116c and the long wavelength LEDs 115b to 115d are arranged in a hexagonal structure. The white light LEDs 116a to 116c and the long wavelength LEDs 115a to 115d shown in FIG. 3C are arranged in the substrate 113 with a power LED of 0.5 Watt or more, and the white light LEDs 116a to 116c and the long wavelength are shown. The LEDs 115a to 115d are alternately arranged so that the light output of the LEDs 115a to 115d becomes uniform.

4 is a block diagram of a lighting apparatus according to an embodiment of the present invention.

Referring to FIG. 4, the lighting apparatus includes a lighting unit 110, a sensor module 120, a controller 130, an SMPS 140, a charging unit 150, a battery 160, a current driver 170, and a switching module 180. AC input terminal 107 and the speaker 190 may be provided.

The lighting unit 110 includes the white light LEDs 116a to 116c and the long wavelength LEDs 115b to 115d, and turns on the white light LEDs 116a to 116c at all times, and turns on the long wavelength LEDs 115b to 115d in an emergency. Can be. In addition, the lighting unit 110 may light up the white light LEDs 116a to 116c and the long wavelength LEDs 115b to 115d together in an emergency to provide a sufficient amount of light for evacuation.

The sensor module 120 may be configured as a set of the temperature sensor 121 and the smoke sensor 122, and when the temperature is out of the reference concentration and the reference temperature and the smoke concentration, it may provide a detection result to the controller 130. have. Since the sensor module 120 is disposed to be exposed to the outside from the covering 102, the sensor module 120 is used for external fire detection and is not involved in the internal temperature rise. The sensor module 120 may be replaced by an ultraviolet sensor in a range of 150 nm to 260 nm, and may be replaced by a wavelength sensor in a range of 800 nm to 1200 nm.

SMPS 140 generates a direct current by rectifying the commercial AC applied through the AC input terminal 107. The SMPS 140 provides the rectified DC to the charging unit 150, and the charging unit 150 charges the battery 160 with the DC provided by the SMPS 140, so that the battery 160 is in an emergency SMPS 140. Allow emergency power to be provided instead.

The switching module 180 is operated by the controller 130 and provides one of the emergency power output from the battery 160 or the constant power provided by the SMPS 140 to the current driver 170. The current driver 170 is for stably driving the white light LEDs 116a to 116c and the long wavelength LEDs 115b to 115d provided in the lighting unit 110. The current driver 170 is a white light LED 116a to 116c and the long wavelength LEDs 115b to 115d. For example, the first current driver 171 and the second current driver 172 may be included in each case.

The switching module 180 may include a manual switch 181 for forcibly providing battery power to the lighting unit 110 by the manager, and the manual switch 181 may be disposed in the covering 102.

When the temperature and smoke concentration detected by the sensor module 120 deviate from the reference value, the controller 130 determines that a fire and an emergency have occurred outside, and controls the switching module 180 to control the battery 160. The emergency power is applied to the lighting unit 110 via the current driver 170. In addition, when the temperature sensor (fire sensor) 142 provided in the SMPS 140 deviates from the reference value, the controller 130 drives the cooling fan to reduce the temperature of the SMPS 140, and to the SMPS 140. The operation of the SMPS 140 may be stopped by blocking commercial AC that is applied. In this case, when the temperature of the SMPS 140 drops below the reference value, the controller 130 may re-drive the SMPS 140 and control the switching module 180 such that the emergency power of the battery 160 is not used.

In addition, the controller 130 may determine the emergency situation by using the temperature and the smoke concentration detected by the sensor module 120.

The controller 130 calculates an average value range for the normal temperature and the normal smoke concentration, and determines that an emergency occurs when the temperature or the smoke concentration measured based on the calculated average value range deviates from the average value. By controlling the 180, a current path is formed between the battery 160 and the lighting unit 110, and the lighting unit 110 may be turned on.

For example, the control unit 130 assumes that the average temperature ranges from the lowest 20 degrees to the maximum 30, the average smoke concentration is 20obs / m, the minimum value is 10obs / m, the maximum value is 30obs / m,

When the temperature deviates from the average value range or the smoke concentration deviates from the average smoke concentration, it may be determined that an emergency has occurred. Alternatively, an emergency may be determined only when the temperature and the smoke concentration deviate from the average temperature and the smoke concentration.

This determination method of the control unit 130 is effective as the environmental change of the place where the lighting device is placed is smaller, and when the uniform ring environment is changed, the emergency situation is judged so as to determine the emergency situation in advance even if the temperature or the smoke concentration does not reach the threshold value. You can make judgments.

In addition, the controller 130 may measure and store data on average temperature and average smoke concentration for each season.

In regions with four distinct seasons, the mean value for temperature and smoke concentration may vary from season to season. Therefore, the average value for the temperature and the smoke concentration can be measured, calculated and stored for each season. The controller 130 calculates an average value of the seasonal temperature and the smoke concentration, stores the result in its own memory, and can use the same.

On the other hand, the controller 130 may determine whether an emergency occurs by referring to the number of times the temperature and the smoke concentration deviate from the average value.

The controller 130 may not determine an emergency situation when the temperature or smoke concentration measured by the sensor module 110 deviates from the average value for a short time within several seconds. When the temperature or the smoke concentration deviates from the average value repeatedly (for example, 2-3 times or more) for a unit time (for example, 1 minute), the controller 130 determines that the actual emergency is not a measurement error or a mischief of the child and the lighting unit 110. ) Can also be driven. The unit time and number of times presented may vary by manufacturer.

The speaker 190 generates a warning sound when the SMPS 140 is overheated, thereby allowing an administrator to check the lighting apparatus according to the present invention.

5 is a reference diagram for an example in which a controller controls an SMPS.

Referring to FIG. 5, a triac 131 is provided between an AC input terminal and a SMPS 140 side transporter, and the triac 131 responds to a control signal ctrl of the controller 130. It is possible to control so that the commercial AC applied through) is not applied to the trans poker (T). In the drawing, the controller 130 controls the input of the SMPS 140 on-off. However, the controller 130 may block the operation of the SMPS 140 by controlling the DC output terminal of the SMPS 140 on-off. have.

6 illustrates a reference view for another example in which the controller controls the SMPS 140.

Referring to FIG. 6, the controller 130 may block the operation of the SMPS 140 by blocking an output terminal OUT at which a direct current is output from the SMPS 140. In this case, the controller 130 prevents the SMPS 140 from substantially switching through the output terminal blocking of the SMPS 140, thereby reducing the heat generation of the SMPS 140.

The switching element 143 is provided on the primary side of the transformer T, and the switching element 143 controls the commercial AC applied to the primary side of the transformer T on-off to the secondary side of the transformer T. Allow the alternating voltage to be induced. The alternating current induced to the secondary side of the transformer T may be converted into direct current through a coil and a capacitor.

7 illustrates a reference view for an example in which the cooling fan 192 is mounted to the rear end cap 109.

Referring to FIG. 7, the cooling fan 192 is disposed in the rear cap 109, and the temperature measured by the fire sensor 142 provided in the SMPS 140 deviates from the reference temperature (for example, 70 degrees or more). When rising above, the controller 130 may drive the cooling fan 192. The cooling fan 192 may control the temperature inside the rear cap 109 and the rear cap 109 to be uniform by flowing air in the rear cap 109.

Since the rear end cap 109 is accommodated in the buried hole 50 formed in the ceiling 20, the inside of the rear end cap 109 has little air flow. However, the cooling fan 192 provided in the rear end cap 109 flows air inside the rear end cap 109 to disperse heat of the switching element, thereby reducing the heat of the SMPS 140.

110: lighting unit 120: sensor module
130 control unit 140 SMPS
150: charging unit 160: battery
170: current driver 180: switching module
181: manual switch 190: speaker

Claims (9)

It is embedded in the ceiling, and formed into a cover for light projection, and a circular plate, the center is perforated, the center is a housing in which a covering coupled to the cover is exposed to the ceiling, and a Switching Mode Power Supply (SMPS) In the emergency LED lighting device comprising a battery for generating a constant power and is charged by the constant power supply to supply emergency power,
A white light LED and a long wavelength LED, which are accommodated in the housing and project long wavelength light, are alternately disposed on a substrate, and the light projection direction of the white light LED and the long wavelength LED is directed toward the cover;
A switching module configured to form a current path between any one of the SMPS and the battery and the lighting unit;
An SMPS temperature sensor provided in the SMPS;
A sensor module exposed from the covering toward the light projection direction, the sensor module including a smoke sensor and a temperature sensor as a pair; And
Measures and stores seasonal data on the temperature and smoke concentration measured in the sensor module and the average detection value of the usual,
When any one of the temperature and the smoke concentration deviates from any one of the seasonal data and the detected average value, it is determined as an emergency situation, and when it is determined as the emergency situation, the power supply of the battery is controlled by controlling the switching module. To the lighting unit,
When the temperature and the smoke concentration measured by the sensor module deviate from the seasonal data and the detected average value only for a preset reference time or less, the emergency situation is not determined.
When the measured value of the SMPS temperature sensor deviates from a preset overheat reference value, one of the AC input terminal and the DC output terminal of the SMPS is blocked to block the temperature rise of the SMPS, and the measured temperature of the SMPS temperature sensor is the overheat reference value. A controller for releasing the interruption to one of the AC input terminal and the DC output terminal when the range is satisfied to operate the constant power by the SMPS; Emergency LED lighting apparatus comprising a. The method of claim 1,
The switching module includes:
And a manual switch for manually switching a current path between the battery and the SMPS.
The manual switch is an emergency LED lighting apparatus, characterized in that the manual operation is exposed to the outer peripheral side of the cover. The method of claim 1,
The control unit,
The emergency LED lighting device, characterized in that for outputting a warning sound to the speaker when the overheating to the SMPS by the SMPS sensor. The method of claim 1,
It is provided between the switching module and the lighting unit,
And a current driver for providing a constant current to the lighting unit to improve light emission stability of the lighting unit. The method of claim 1,
The control unit,
Emergency LED lighting device, characterized in that whether the fire occurs when the temperature and smoke concentration measured by the temperature sensor and the smoke sensor constituting the sensor module deviates from a predefined reference value. The method of claim 1,
Emergency LED lighting device further comprises a; cooling fan for driving the SMPS when the fire state is detected by the control unit. The method of claim 1,
The SMPS,
Triacs are provided at commercial AC inputs,
The control unit,
Emergency LED lighting device, characterized in that for controlling the triac to cut off the alternating current applied to the AC input terminal by overheating the SMPS. delete delete

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