KR200251437Y1 - A cutoff system of lighting circuit of metal-halide lamps and natrium lamps - Google Patents

Abstract

The present invention discloses a metal halide lamp and a sodium lamp lighting circuit blocking system. The lighting circuit blocking system of the present invention is a device for automatically shutting off the lighting circuit in case of failure of metal halide lamp and sodium lamp in parallel with the lamp in the ballast. When the lamp lighting switch is connected to one terminal of the ballast, Means for generating a pulse waveform; a lighting means connected to the other terminal of the ballast to rectify a predetermined magnitude of AC voltage supplied from the ballast to generate a voltage drop of a predetermined magnitude to generate a trigger signal; SCR which operates when inputted to the gate terminal and inputs and outputs the pulse waveform from the pulse waveform generating means, means for diagnosing abnormality of the lamp by inputting the rectified signal by the lighting means, and lamp by the diagnostic means. If an abnormality is found, a means for blocking the SCR after a predetermined time is determined. By made.

The present invention extends the life of the ballast and the igniter as compared to the prior art, there is an effect that can prevent the occurrence of fire in advance.

Description

A cutoff system of lighting circuit of metal-halide lamps and natrium lamps}

The present invention relates to a blocking system of a general metal halide lamp and sodium lamp lighting circuit. In particular, when a metal halide lamp or a sodium lamp is broken, the present invention relates to a technology for shutting off power applied to a lighting circuit of these lamps.

1 shows a schematic diagram of a general metal halide lamp and a sodium lamp lighting circuit. In the lighting circuit of FIG. 1, if the lamp breaks down (for example, a disconnection accident), the igniter continues to operate unless the power is shut off, resulting in a high-voltage pulse wave, which causes the igniter to fail and eventually burns out to the ballast. And break sockets and wires and, if continued, may cause fire.

However, in the related art, an accident of the above-mentioned causes has continuously occurred because the LED lamp was not only cut off when the lamp was broken, but the fault power was not cut off. In other words, even if a lamp failure occurred, if the person in charge found it and did not cut off the power, the incident could not be solved. As such, in the related art, maintenance is very inconvenient, and it is inconvenient to check LED lamps individually by having the person in charge check the LED light when the lamp is broken and then replace the lamp manually.

Due to these problems, the life of the igniter is shortened, the life of the ballast is also shortened, the probability of a fire is increased, and the wires are often burned out. In addition, unnecessary power consumption could not be ignored.

The present invention aims to provide a blocking system of a metal halide lamp and a sodium lamp lighting circuit for solving the above problems of the prior art.

1 is a schematic view of a typical metal halide lamp and sodium lamp lighting circuit.

Figure 2 is an embodiment of a sodium lamp lighting circuit blocking system configuration according to the present invention.

Figure 3 is an embodiment of a block diagram of a metal halide lamp lighting circuit blocking system according to the present invention.

Figure 4 is another embodiment of the metal halide lamp lighting circuit blocking system configuration according to the present invention.

<Brief description of the main parts of the invention>

10: LED lighting unit 20: lamp diagnostic unit

30: system cutoff part 40: lighting part

100: lighting circuit blocking system 50, 110: condenser

120: ballast 130: lamp

Metal halide lamp and sodium lamp lighting circuit blocking system of the present invention is to be applied to the conventional metal halide lamp and sodium lamp lighting circuit as shown in FIG. 2 is a case of a sodium lamp as an embodiment of the blocking system according to the present invention that can be applied to FIG. 3 and 4 are examples of the metal halide lamp (HQI and 1KW) and the metal halide lamp as one embodiment of the blocking system according to the present invention as shown in FIG. 2. 3 and 4 are basically the same as in FIG. 2. Therefore, with reference to Figure 2 will be described the configuration and operation principle of the subject innovation.

1. In normal operation

When AC power is input to the lighting circuit blocking system 100 of the present invention through the ballast 120, the AC voltage applied between the blue terminal BL and the red terminal RD is rectified to DC through the diode D1 (IN4007). The trigger signal is generated through the resistors R2 (4.7 KΩ) and R3 (3.3 KΩ) and supplied to the gate of the SCR (BT169D) (Q2) to make the SCR (Q2) ON. When an AC voltage is applied from the transformer of the terminal to the white terminal (WH), this voltage is changed to the pulse voltage by the capacitor C1 (104㎌ / 600V) and then applied to the anode of the SCR (Q2) above, and the lamp is initially turned on. It begins.

After that, when the lamp is turned on, the voltage between the BL terminal and the RD terminal becomes 0 volts, so the SCR (Q2) is turned off and the lamp maintains the normal lighting state.

2. In case of lamp breakage

When disconnection (breakdown) occurs in the lamp 130, the voltage between the BL terminal and the RD terminal rises above the normal voltage. This is because the lamp becomes no-load due to disconnection. The high voltage rectified by the diode D1 is DC by the resistor R5 (33 KΩ) and the capacitor C2 (0.22 kΩ / 50V), and the capacitor C3 (through the resistor R6 (470 KΩ) and the diode D2 (IN4007). 100 kV / 16V). When the voltage charged in the capacitor C3 becomes higher than the reference voltage of the zener diode ZD1-the zener diode ZD1 is 3.9 volts-, the transistor Q1 (KTC3200) is turned on.

When the transistor Q1 is turned on, the trigger voltage supplied to the gate terminal of the SCR Q2 by the resistors R2 and R3 becomes 0 volt, and the SCR Q2 is turned off. When the SCR Q2 is cut off, the pulse waveform is not generated by the capacitor C1 (104 kV / 600 V). That is, no current flows through C1. Therefore, a pulse wave is not generated and a fire can be prevented, and a burnout of a socket and an electric wire can be prevented beforehand. It also protects the ballast and extends the life of the igniter.

The voltage increased by the lamp disconnection turns on the LED indicator light through diode D5 (IN4007) and resistor R7 (180KΩ). Therefore, the manager can easily see the status of the disconnection of the lamp by looking at the lighting state of the LED indicator, there is an advantage that can quickly recover from the accident. At this time, the blocking time of the SCR (Q2) can be adjusted according to the characteristics of each lamp. At this time, the interruption time can be adjusted by setting the zener diode ZD1 and the capacitor C3 value. Decreasing the value of C3 shortens the cutoff time, while setting the voltage value of ZD1 increases the cutoff time. In case of sodium, C3 value is 100㎌ / 16V, and in case of metal halide, C3 value is 220㎌ / 16V.

When the sodium lamp breaks down, the SCR is turned off after about 10 to 15 seconds after applying the pulse wave, and the metal lamp needs the lamp to warm up in about 1 to 50 seconds when the temperature is low in winter due to the characteristics of the lamp. It is necessary to adjust the power off time of the igniter according to the preheating time. This adjustment is made by adjusting the capacitance of the capacitor C3 and the reference voltage value of ZD1. When the metal lamp fails, SCR is turned off after about 1 minute to 1 minute 10 seconds after the application of the pulse wave.

In the present invention, the pulse width and magnitude of the peak voltage required for lamp lighting vary depending on the capacitance of the capacitor C1. And the capacity of each lamp C1 is as follows.

Sodium lamp time: C1 = 104 ㎌ / DC 600V (see Fig. 2)

For metal halide lamps (for HQI and IKW): C1 = 474 ㎌ / DC 400 V (see Fig. 3)

Metal halide lamp: C1 = 474 kV / DC 600 V (see Figure 4)

On the other hand, a pulse waveform with a peak value of about 2500-4000 volts for sodium lamps, about 800-1500 volts for metal halides, and about 4500 volts for metal halide lamps (HQI) is applied. Therefore, in the event of a failure, such a high voltage pulse waveform is applied, but a serious accident may occur, but according to the present invention, since this is blocked within a predetermined time, the above accident can be prevented in advance.

The present invention may be variously modified and may take various forms and the detailed description of the present invention has been described only with respect to specific embodiments thereof. It is to be understood, however, that the present invention is not limited to the particular form referred to in the detailed description of the invention, but rather includes all modifications, equivalents, and substitutes within the spirit and scope of the invention as defined by the appended claims. It should be understood to do.

Advantages of the present invention are as follows.

First, it operates in the event of a lamp failure, extending the life of the igniter.

Second, it protects the ballast and extends its life.

Third, because it blocks the pulse wave, it prevents fire, and prevents burnout of socket and wire.

Claims (11)

In the system that is connected to the ballast in parallel with the ballast and automatically shuts off the lighting circuit when a metal halide lamp or sodium lamp fails, Means for generating a pulse waveform when connected to one terminal of the ballast when the lamp lighting switch is turned on; Lighting means connected to the other terminal of the ballast for rectifying a predetermined magnitude of AC voltage supplied from the ballast to generate a voltage drop of a predetermined magnitude to generate a trigger signal; An SCR which operates when a trigger signal is input from the lighting means to a gate terminal and inputs and outputs a pulse waveform from the pulse waveform generating means; Means for diagnosing abnormality of the lamp by inputting the signal rectified by the lighting means; And And a means for shutting off the SCR after a predetermined time when the abnormality of the lamp is detected by the diagnostic means. 2. The metal halide lamp and sodium lamp lighting circuit blocking system of claim 1, further comprising means for disconnecting a surge voltage in parallel with the SCR. The metal halide lamp and the sodium lamp lighting circuit interrupting system according to claim 1 or 2, further comprising display means for displaying a lamp if there is an error. 2. The system of claim 1, wherein the pulse generating means is a condenser. The system of claim 1 or 2, wherein the lighting means comprises a diode and a resistor connected to the diode. 6. The system of claim 5, wherein the lamp diagnosing means comprises means for adjusting the blocking time of the SCR. The method of claim 6, wherein the lamp diagnostic means A first resistor connected to the lighting means; A first capacitor connected to the first resistor; A second resistor connected in parallel with the first capacitor; A first diode connected in series with the second resistor; A second diode connected in parallel with a connection circuit of the second resistor and the first diode and having a polarity opposite to the first diode; And And a second capacitor connected in parallel with the first and second diodes, respectively, and outputting an output signal from the junction point of the first diode, the second diode, and the second capacitor to the system blocking unit. Sodium lamp lighting circuit blocking system. The method of claim 6, wherein the system blocking unit, A zener diode for inputting an output signal of the lamp diagnostic means; A transistor for inputting an output signal of the zener diode to a base and inputting a voltage signal of which voltage is dropped by a predetermined magnitude from the lighting means to a collector side; And The metal halide lamp and the sodium lamp lighting circuit blocking system are connected to the transistor in parallel and made of a resistor to which a voltage dropped by a predetermined magnitude is applied to the collector side voltage of the transistor. 10. The system of claim 8, wherein the blocking time adjusting means of the SCR is the first capacitor and the zener diode. 3. The system of claim 2, wherein the surge voltage blocking means is a diode. The method of claim 3, wherein the display means resistance; A diode connected in series with said resistor; And Characterized in that the LED is connected in series with the diode, metal halide lamp and sodium lamp lighting circuit blocking system.