JPS6070695A - Device for firing emergency lamp - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to an emergency light lighting device.

As is well-known, the lighting device for emergency lights (in this Memorandum of Understanding also includes guide lights) normally lights the discharge lamps using a commercial AC power source, and also charges the battery.In an emergency, the battery is A high frequency inverter is operated by sources 1 and 17, and the discharge lamp is lit by the high frequency amount.

By the way, the legally valid lighting time for the batteries used here is 30 minutes for emergency lights and 20 minutes for guide lights.
It is believed that the discharge characteristic has a luminous flux m or more than a quasi-voltage. Here, Kotobeki fl/! The voltage varies depending on the lighting device; however, the voltage is usually 1.7V/cell. However, batteries vary in their characteristics, and as they are repeatedly charged and discharged, their discharge characteristics deteriorate over the battery life. I made it like this.

To explain this in detail in terms of concrete Kf, FIG. 2 shows the discharge characteristics of the battery, and 8 is the curve of the conventional battery discharge characteristics. This means that the battery is first fully charged to its rated voltage or higher, then discharged for 12 hours (the terminal voltage at the terminals is approximately θ), and then charged again for 24 hours and then discharged to the other side. discharge characteristics. To this - luminous flux standard voltage 11
It takes about 87 minutes to drop to V/7M (actually 87 minutes 24 minutes)
sec) It is understood that 1- means L/-h. This applies to both guide lights and emergency lights, which satisfy legal regulations.1.
ing.

Now, in general, what is the voltage power of this type of battery? It is not desirable to continue discharging the battery when the luminous flux decreases beyond the standard voltage [-]. In other words, release 1 for a long time! (Continuing to discharge means over-discharging, which will only shorten the battery's cycle life.) If you continue discharging while installed in a lighting device, the discharge lamp will be in a slight discharge state during that time. This causes the discharge lamp to darken faster.

This kind of thing happens when there is a power outage for a long period of time, or when the lighting button is inspected.
Forgetting to turn the inspection switch back on after the inspection is complete [this can often happen when you need it]. For some reason, the battery continues to be discharged until the power is restored or the check switch is reset.

The purpose of the present invention is to prevent a decrease in the cycle life of a battery due to over-discharge of the battery, a decrease in discharge, a decrease in the life of a lamp, etc.

In this invention, when the voltage of heavy oil falls to a predetermined value lower than the luminous flux drift voltage of the discharge lamp, the high frequency inverter is stopped to stop the discharge of the battery, thereby causing the battery to overheat. The characteristic of drying is that it is coated with K to prevent discharge.

An embodiment of this invention will be described below with reference to FIG. VC is fixed, and 1 is the power supply terminal of the commercial AC power supply.

2 is a discharge lamp, gti high frequency inverter 4 is a battery-b
iJ: Relays 5a to 5C for switching are the contacts of relay 5. Discharge lamp 2 is the switching relay F-6. It is connected to the power supply terminal 1 via the choke coil 7, the normally open contact 5a, and the inspection switch 8. Both discharge lamps 20 and Cτ are connected to each other through the normally open contact point 5b. 1 via inspection switch 8 to power terminal l
The secondary coil 10 is connected to the secondary coil pvlτ rectifier 12 of the step-down transformer 11, and the battery 4 is charged by the rectified circuit voltage.

The battery 4 is connected through the normally closed contact 1. of contact 5C. and is connected to the high frequency inverter 8 as a shoulder single N source. High frequency inverter 8 oscillation transformer 13. pair of transistors 14.15
and feedback coil 16) C-, mainly composed of 1° stone. The positive end of the battery 4 is connected to the primary coil 17 of the oscillation transformer 18.
to the center tap of , and the negative 4vi slope is connected to both transistors 14
．． Each of the emitters is connected to 16 emitters. 18 is an oscillation transformer] is filled with the secondary coil of 8.

The above configuration is different from the conventional lighting device of this type. (If one switch 6 is turned on while the first inspection switch 8 is turned on, the filament of the discharge lamp 2 is preheated via the glow switch 9, and then the discharge lamp 2 is turned on by turning off the glow switch 9. When the commercial AC and power supply went out, I turned on the switch 4-8 to check the L/S 1) 71, and when the relay 5 sparrow returned - the battery 4 that had been charged until then turned on the switch 4-8. High frequency inverter 3 is working! - A high frequency output signal is applied to the discharge lamp 2r through the normally closed contact of the hx contact 5a, and the discharge lamp 2 is illuminated with high frequency.

In this invention, when the voltage applied to one surface during lighting by the battery 4 reaches the required illuminance below the standard luminous flux, the lighting by the battery 4 is stopped. As an example of a specific configuration, the transistor 20 is connected to the base low path of the transistor 14.15 with a switch element and 1-.When this is on, the 4 batteries and each transistor 14.15r are connected.
A base current is supplied based on the induced voltage of the feedback coil 16 so as to be superimposed on the voltage. This results in transistor 14.1
5i turns on and off alternately to generate high frequency oscillation. Suit F that turns this on and off in the base circuit of transistor 20
'-element and [7te transistor 17'l! It is connected. Reference numeral 22 is a voltage detector for detecting the voltage of the battery 4, and 1.22 is a voltage detector that detects the voltage of the battery 4. 2) A signal is sent to turn on transistor 21. When transistor 21 is turned on, transistor 20 is turned on. Battery voltage 7'I: When the luminous flux of the discharge lamp decreases beyond a predetermined value below the standard voltage, the transistor 1 is turned off due to a change in the signal from the voltage detector 22 - the transistor 20 is also turned off - and the high frequency inverter is turned off. The oscillation of 8 is stopped. As a result, lighting of the two discharge lamps by the higher frequency output than the negative one is stopped.

Regarding the voltage of the battery 4 and 1- when the transistor 21 is turned off, the lowest voltage at which the discharge lamp can be lit with the required illuminance is the luminous flux standard voltage LIV.
/cell, for example 0.85V/(!Le Cheng Liao, 0) If the luminous flux standard voltage is LI V/cell,
The battery voltage that stops the oscillation of the high frequency inverter is 0.8
If the voltage is about 5V/ceV, there will be no problem in practical use.

Next, I will explain the results of the work carried out by the present inventor.

First, regarding the case of the conventional example, the battery is first charged for 48 hours until fully charged, and then discharged for 12 seconds with a high frequency inverter as a load to reduce the voltage to approximately Ov. Charge this for 24 hours.
, 1-, the high-frequency inverter was used as a load and discharged again. At this time, the battery voltage is the luminous flux standard voltage 11 V
The discharge time (lighting time of the discharge lamp) until reaching /7 l was 87 minutes and 24 seconds. In contrast, the present invention has 1. Taga b
- First, the battery was charged for τ48 hours to make it fully charged, and then the high-frequency inverter was connected to the load at 12 o'clock with its open side. With this, the battery pressure IO drops to 85V/cell1. Also, ;*, the subsequent discharge was stopped, the discharge was started, and after the red c-, IQ time, the battery was charged again for 24 hours, and then the high-frequency inverter was further discharged with the load and 1-. At this time, the discharge WJ period (lighting time of the discharge lamp) until the battery surface pressure reached the luminous flux standard voltage LIV/SE/L/ was 41 minutes and 86 seconds. In other words, it took 4 minutes and 12 seconds for the luminous flux to drop to the standard voltage for the J-type light source according to the present invention.

In general, with this type of battery, the time required for the voltage to drop to a predetermined value through repeated charging and discharging is short thread (
Become. Therefore, as mentioned above, the time for the luminous flux to drop to the standard voltage -h! A longer length means that the battery can be used for a longer period of time. i.e. battery life 7
This means that the length will be 5.

In addition, in the case of the conventional example, the discharging force of the battery during a song of 87 minutes and 24 seconds was 5.82WH, and in the case of the present invention, the discharging force of the battery was 5.84WH when the song was listened to for 41 minutes and 86 seconds. -The difference is 52WH. This means that in the case of the invention based on ≠11 wood, the amount of charge can be increased.
I can say it. This means that even if the battery is charged and discharged a predetermined number of times, it can be charged more than before, and therefore can be used for a long period of time.Characteristic curve B# in the second aVC
-1 Discharge characteristics of the battery according to this invention -1,14
This shows that it took 41 minutes and 86 seconds for the VC to drop to /ceA/.

Detailed Description 1 - According to the present invention, since the battery is over-discharged to the extent that its terminal voltage becomes zero, it is possible to prevent the life of the discharge lamp from being shortened due to blackening, etc. It also has the effect of improving the cycle life of the battery.

[Brief explanation of the drawing]

Circuit 1 showing an embodiment of this invention. Figure 2 is a diagram showing the characteristics of the market.

Claims (1)

[Claims] A discharge lamp that is normally lit by a commercial alternating current power source, a battery that is charged by the commercial alternating current power source, and a high-frequency inverter that operates using the battery as a power source in an emergency and oscillates a high frequency that lights the discharge lamp at a high frequency. Yes1. A voltage detecting means for detecting when the voltage of the battery reaches a predetermined value lower than a standard voltage of the luminous flux of the discharge lamp, and a means for stopping the oscillation of the high frequency inverter when the voltage detecting means outputs an error. Emergency light lighting device.