JPS6011437B2 - emergency lighting equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an emergency lighting device, and its purpose is to facilitate the replacement of discharge lamps in normal conditions, and to replace all discharge lamps except defective ones in an emergency. The goal is to obtain emergency lighting equipment that can be turned on quickly.

As shown in Figure 3, under normal conditions, an AC power source 4 is connected to an AC lighting circuit consisting of a commercial ballast 2, and when an emergency power outage occurs, the coil of the relay 5 is de-energized and its contacts 6, 7 are activated. , 8, and connected the charging battery 9 to the inverter circuit 3 to light one discharge lamp la.

However, in such conventional systems, the same discharge lamp is used for both normal and emergency situations, so if an emissary error or other defect occurs during normal lighting, there is a risk that the discharge lamp may not turn on in an emergency, and the emergency lighting There was a drawback that the function of the equipment could not be demonstrated. In the figure, reference numeral 10 denotes a charging circuit for charging the battery 9 during normal operation. Further, in the circuit shown in FIG. 4, two or more commercial ballasts 2, 2a are provided in the AC lighting circuit, and each ballast 2, 2a normally carries a plurality of discharge lamps la, lb. The two discharge lamps were connected to each other so that the two lamps were lit in parallel, and in an emergency, one of the discharge lamps la was connected to the inverter circuit 3 for emergency lighting.

However, in such a case, when one of the discharge lamps out of multiple discharge lamps has an emission failure or some other defect occurs during normal lighting, the remaining discharge lamps are normally lit, and the inside of the panel of the fixture is damaged. When there are discharge lamps in the area, it is difficult to distinguish between defective discharge lamps and normal discharge lamps, and there is a risk that the time for replacement may be missed. Furthermore, if the defective discharge lamp is a discharge lamp on the emergency lighting side, it will not be replaced even though it is defective, so there is a drawback that it will not turn on in an emergency. Furthermore, in the conventional example shown in FIG.
The two discharge lamps la and lb are lit in parallel by a, and in an emergency, the two discharge lamps la and lb are lit in parallel by an inverter circuit 3, but this has the same drawbacks as the fourth illustrated embodiment described above. was there. The present invention has been provided in view of the above-mentioned drawbacks, and will be described in detail below with reference to one embodiment. FIG. 1 shows a circuit diagram of an embodiment, in which a leakage transformer is used as a commercial ballast 2, and one end of the commercial ballast 2 is connected to a relay 5 through one filament f of a discharge lamp la. Connect the terminal of the commercial ballast 2 to the COM terminal of contact 7 of
It is connected to the COM terminal of. The other filament f of the discharge lamp la connects the - end to the N of contact 7 through the glow tube ○a.
It is connected to the O terminal, and the other end is connected to one end of the other filament fb2 of the discharge lamp lb. The filament fb2
The other end is connected to the NO terminal of the contact 8 via the glow tube Gb. On the other hand, the inverter circuit 3 constituting the electric wire section of the emergency lighting means connects one end of the output winding of the output transformer 11 to one end of the filament fb2 of the discharge lamp lb, and the other end of the output winding of the output transformer 11 is connected to the capacitor C, It is connected to the NC terminal of contact 7 via capacitor C2, and to the NC terminal of contact 8 via capacitor C2. Contacts 6, 7, and 8 of the relay 5 are closed on the NO terminal side when the AC power supply 4 is reinforced, connecting the discharge lamps la and lb in series with the ballast 2, and closed on the NC terminal side when a power outage occurs. While connecting the battery 9 to the inverter circuit 3, the discharge lamps la, lb
are connected in parallel to the output windings of the output transformer 11, respectively.
The charging circuit 10 has the same function and configuration as the conventional example described above. 12 is an inverter transistor.

Assuming that AC power 4 is being supplied now, the coil of relay 5 is excited, contacts 6, 7, and 8 are connected to their NO terminals, battery 9 is charged by charging circuit 10, and discharge lamp la , lb are connected in series to the commercial ballast 2 to perform series lighting.

Here, if even one of the discharge lamps la, lb has an emission failure or other defect, all the discharge lamps la, lb will not light up. Therefore, due to the non-lighting of the discharge lamp la,
It will be identified that there is a defective discharge lamp within the lb. Next, when a power outage occurs, the coil of relay 5 is no longer excited, contacts 6, 7, and 8 are connected to the NO terminal side, connecting battery 9 to inverter circuit 3 via contact 7, and connecting battery 9 to inverter circuit 3 via contact 7. Discharge lamps la and lb are connected in parallel to the output winding of an output transformer 11 via contacts 6 and 7 and capacitors C, and C2, and the discharge lamps la and lb are lit in parallel by an inverter circuit 3 driven by direct current.

At this time, even if one of the discharge lamps la and lb is defective, since they are lit in parallel, the remaining normal discharge lamps will not turn on in an emergency and function as an emergency lighting fixture. It can be done. FIG. 2 shows another embodiment of the present invention, in which two ballasts 2 and 2a are provided in the AC lighting circuit, and each ballast 2 and 2a lights up the discharge lamp la during normal lighting.
．． It is designed to light up the lbs in parallel.

Furthermore, a control circuit 13 is provided in series with the AC lighting circuit, and each discharge lamp la. A hot coupler 14a for photodetection provided in lb.
The energization of the AC lighting circuit is controlled by the photodetection signal 14b. Reference numeral 15 denotes a power supply section of the control circuit 13, which turns on the control circuit 13 when the AC power source 4 is applied, and supplies the AC power source 4 to the AC lighting circuit.

The inverter circuit 3 and the charging circuit 10 have the same structure and function as the embodiment shown in FIG. 1 described above. However, in normal times, each discharge lamp la, l is powered by an AC power source 4.
b is normally lit. At this time, if even one discharge lamp among the discharge lamps la and lb is not lit (for example, discharge lamp la), the photocoupler 14a installed in that discharge lamp la cannot detect the light of the discharge lamp la and detects that it is not lit. and the off signal is sent to control circuit 1.
Output to 3. At this point, the control circuit 13 turns off, cuts off the AC power supply 4 to the AC lighting circuit, and disconnects all the discharge lamps la, l.
Turn off the light b. Next, in the event of an emergency, all the discharge lamps la and lb are connected in parallel to the output winding of the output transformer 11 of the inverter circuit 3, as in the embodiment shown in FIG. 1, so that all normal discharge lamps are turned on. become. The start of detection by the hot couplers 14a, 14b is time-adjusted by providing an appropriate delay circuit to correspond to the delay in starting and lighting the discharge lamps la, lb. The present invention includes a plurality of discharge lamps,
Since it is equipped with a lighting means for normally lighting these discharge lamps, and a means for turning off all the discharge lamps when it is detected that the discharge lamps are not lit during normal lighting, it is possible to easily identify the occurrence of a defective discharge lamp, and the discharge lamp This has the effect of reducing the possibility that the discharge lamps are defective in the event of an emergency lighting.Moreover, since all normal discharge lamps are lit during the emergency lighting, there is no possibility of the lamps not lighting up during normal times. Even if all the discharge lamps are turned off due to an emergency, the normal discharge lamps can be turned on in an emergency, and the reliability is high.

Brief explanation of the drawings Fig. 1 is a circuit diagram of one embodiment of the present invention, Fig. 2 is a circuit diagram of another embodiment of the invention, Fig. 3 is a circuit diagram of a conventional example, and Fig. 4 is a circuit diagram of another embodiment. FIG. 5 is a circuit diagram of another conventional example, and la and lb are discharge lamps.

Figure 1 Figure 2 Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] 1 A plurality of discharge lamps, a lighting means for normally lighting these discharge lamps, a means for turning off all the discharge lamps when detecting non-lighting of the discharge lamps during normal lighting, and a means for connecting all the discharge lamps in parallel to a power source in an emergency. An emergency lighting device characterized by comprising an emergency lighting means for lighting all of the normal discharge lamps in an emergency.