KR20010010746A - Protection system for lighting apparatus - Google Patents

Abstract

PURPOSE: A protective circuit of a lighting device is provided to prevent a damage of a lighting device by showing a lamp which is abnormal in the lighting device having a plurality of lamps. CONSTITUTION: A plurality of lamps(11,12) are installed at a lighting device. A power supply(20) supplies a power to the plurality of lamps(11,12). A switching section(30) is connected between the power supply(20) and lamps(11,12) and determines whether a power is supplied or whether lamps(11,12) are lit. A voltage detector(40) detects voltages across the lamps(11,12). A microcomputer(50) judges states of the lamps(11,12) according to a level of the voltages detected by the voltage detector(40) and controls an operation of a system according the judgment result. A display device(60) displays a message which indicates a lamp which is abnormal according to a control signal from the microcomputer(50). A melody generator(70) outputs a melody which indicates the lamp which is abnormal according to a control signal from the microcomputer(50).

Description

{Protection system for lighting apparatus}

The present invention relates to a protection device for a lighting device, and more particularly, to protect a lighting device that detects whether an error occurs in each fluorescent lamp in a lighting device to which a plurality of fluorescent lamps are applied, and cuts off the supply of power when an error occurs. Relates to a device.

In recent years, luminaires have been replaced by fluorescent lamps in place of conventional incandescent lamps. Fluorescent lamps emit light from the core wire of high temperature by using the thermal action of electric current. The fluorescent lamps are increasing in popularity because they are more economical and efficient because they have lower power consumption than natural light compared to incandescent lamps.

The fluorescent lamp is generally divided into a straight tube shape and an annular shape, as shown in FIGS. 1A and 1B, and a cross section is mostly circular. At this time, the fluorescent lamp is manufactured by coating a fluorescent material layer on the inner surface of the tubular body made of glass material, disposing electrodes at both ends, and filling the inside with mercury and rare gas.

In the case where the fluorescent lamp having the above configuration is to be turned on, when power is applied to the electrodes at both ends, current flows to the cathode to preheat, and then electrons are emitted from the electron-emitting material applied to the cathode. The electrons emitted by the above operation are attracted to the anode and moved to initiate discharge. Electrons flowing by the discharge collide with the mercury atoms enclosed in the glass tube, and the mercury atoms receive the energy of the electrons to generate ultraviolet rays.

At this time, the fluorescent material layer applied to the inner wall of the glass tube is excited by receiving ultraviolet rays to generate visible light.

On the other hand, the recent lighting fixtures are equipped with a plurality of fluorescent lamps as described above to generate the desired brightness by adjusting the number of lamps, the conventional lighting fixtures have a function to check the state of each fluorescent lamp Since there is no power, only the operation of lighting by supplying power to the fluorescent lamp is performed. Accordingly, even when the lifetime of the fluorescent lamp is over or overvoltage is applied to the fluorescent lamp, there is a problem that the lighting fixture may be damaged by not taking any other measures.

The present invention has been made in order to solve the above problems, the object of the lighting fixture by visually or audibly displaying the lamp in which the abnormality occurs in a lighting fixture having a plurality of lamps of the lighting fixture It is to provide a protection device of the lighting fixture that can prevent damage and at the same time improve the ease of use.

1 is a perspective view showing the shape of a fluorescent lamp used in a conventional lighting fixture,

Figure 2 is a block diagram showing the configuration of a lighting fixture according to an embodiment of the present invention.

<Description of the code | symbol about the principal part of drawing>

11, 12: lamp 20: power supply

30: switching unit 40: voltage detection unit

50: microcomputer 60: display unit

70: melody generating unit 80: memory unit

According to a feature of the present invention for achieving the above object, a power supply for supplying the power required for lighting with a plurality of lamps, and a switching unit connected between the power supply and each lamp to determine whether to supply power And a voltage detector for detecting a lamp voltage for each of the plurality of lamps, and determining a state of each lamp according to the level of the lamp voltage detected by the voltage detector, and performing an operation of the switching unit when an abnormality occurs in the lamp. It provides a protection device for a luminaire including a microcomputer for controlling the power supply to the lamp having a failure, and a display unit for displaying a message indicating a lamp having a failure according to the control signal of the micom.

At this time, according to an additional feature of the present invention, through the melody generating unit for outputting a melody indicating a lamp is generated according to the control signal of the microcomputer, a plurality of messages to be displayed through the display and the melody generating unit It is preferable to further include a memory unit for storing a plurality of melodies to be output.

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

2 is a block diagram showing the configuration of a lighting device protection device according to an embodiment of the present invention.

2, reference numerals 11 and 12 denote a plurality of lamps mounted on a luminaire, 20 denotes a power supply unit for supplying power required for lighting to the respective lamps 11 and 12, and 30 denotes the above. The switching unit is connected between the power supply unit 20 and each of the lamps 11 and 12 to determine whether to supply power, that is, whether the lamps 11 and 12 are turned on.

The plurality of lamps 11 and 12 may use lamps having the same power consumption, but it is preferable to use lamps having different power consumptions so as to easily generate desired brightness when used as a lamp. In the embodiment of the present invention, the first lamp 11 has a power consumption of 27W, and the second lamp 12 has a power consumption of 34W.

Further, reference numeral 40 denotes a voltage detector for detecting the lamp voltage across the plurality of lamps 11 and 12, and 50 denotes each lamp 11 according to the voltage level detected by the voltage detector 40. 12 denotes a microcomputer that determines the state of filament break, end of life or overvoltage, and controls the operation of the system according to the result, and 60 denotes a lamp in which an abnormality occurs according to the control signal of the microcomputer 50. 11 and 12 show a display unit displaying a message.

In addition, reference numeral 70 denotes a melody generating unit for outputting melody indicating lamps 11 and 12 in which an abnormality occurs according to the control signal of the microcomputer 50, and 80 denotes a melody generating unit through the display unit 60. The memory unit stores a plurality of messages and a plurality of melodies to be output through the melody generator 70.

Referring to the operation of the protective device of the lighting device according to the present invention having the configuration as described above are as follows.

First, the user operates the switching unit 30 so that the power supplied from the power supply unit 20 is applied to the plurality of lamps 11 and 12, respectively, to light up. At this time, all of the lamps 11 and 12 may be turned on according to a user's operation, and in some cases, only a specific lamp may be turned on.

In the state where the lamps 11 and 12 are turned on, the voltage detector 40 detects a voltage applied to both ends of the lamps 11 and 12. In this case, the voltage detector 40 is designed to output a voltage of 1V to 5V. When the voltage of the voltage detector 40 outputs 1.5V to 4.5V, the lamps 11 and 12 are normally turned on. When the voltage detector 40 outputs a voltage of less than 1.5V, the filament of the lamps 11 and 12 is disconnected. When the voltage detector 40 outputs a voltage of 4.5V or more, the lamp 11, A state in which 12) is inactivated, that is, a state in which an overvoltage is generated in the lamps 11 and 12.

As a result, the microcomputer 50 determines the states of the lamps 11 and 12 according to the voltage output from the voltage detector 40. In this case, when it is determined that the abnormality of the first lamp 11 is determined by the microcomputer 50, a message and a melody are called from the memory unit 80 to display “CLP 1” through the display unit 60. The first melody is output through the melody generator 70. At the same time, the microcomputer 50 outputs a control signal to the switching unit 30 to cut off the power applied to the first lamp 11.

In addition, when it is determined that the abnormality of the second lamp 12 in the microcomputer 50 is called by the message and melody from the memory unit 80 to display "CLP 2" through the display unit 60, The second melody is output through the melody generator 70. At the same time, the microcomputer 50 outputs a control signal to the switching unit 30 to cut off the power applied to the second lamp 12.

On the other hand, when an abnormality is determined in both the first and second lamps 11 and 12 in the microcomputer 50, a message and a melody are called from the memory unit 80 and the "CLP" is transmitted through the display unit 60. 3 "is displayed and the third melody is output through the melody generating unit 70. At the same time, the microcomputer 50 outputs a control signal to the switching unit 30 to cut off all power applied to the first and second lamps 11 and 12.

That is, "CLP 1" of the message displayed on the display unit 60 indicates replacement of the first lamp 11, "CLP 2" indicates replacement of the second lamp 12, and "CLP 3". Indicates the exchange of the first lamp 11 and the second lamp 12. &quot;

As described above, in the present invention, the display unit 60 displays the lamp in which an abnormality is generated, and outputs a melody corresponding thereto through the melody generating unit 70 so that the user can quickly replace the lamp. do.

As described above, the protection device of the lighting device of the present invention has an effect of improving the convenience of use by allowing the user to replace the lamp quickly by visually and audibly displaying the lamp in which the abnormality occurs.

In addition, there is an effect that can prevent the damage to the lighting fixture due to the continuous power supply by blocking the power supply to the lamp in which the abnormality occurs.

Claims (2)

A power supply unit for supplying power required for lighting with a plurality of lamps, a switching unit connected between the power supply unit and each lamp to determine whether to supply power, and a voltage for detecting a lamp voltage for each of the plurality of lamps A microcomputer that determines the state of each lamp according to the detection unit and the level of the lamp voltage detected by the voltage detection unit, and controls the operation of the switching unit when the lamp is abnormal to cut off the power supply to the lamp having the abnormality. And a display unit which displays a message indicating a lamp in which an abnormality occurs according to the control signal of the microcomputer. The method of claim 1, The melody generating unit outputs a melody indicating a lamp in which an abnormality occurs according to the control signal of the microcomputer, and the memory unit storing a plurality of messages to be displayed through the display unit and a plurality of melodies to be output through the melody generating unit. Protective device of the lighting fixture, characterized in that it further comprises.