JPH09190885A - Emergency lamp lighting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To contrive power saving by preferentially utilizing a solar battery and to prolong an emergency lighting period. SOLUTION: A power supply control circuit provided in an emergency lamp lighting device performs the following: Power feed priority order to an inverter is in the order of a solar battery SS, AC power supply AC, and a battery BA. Excessive power from the solar battery SS is used for charging the battery BA. Underpower in the solar battery SS is compensated by the AC power supply AC or the battery BA. Namely, switching to the AC power supply AC is done by detecting the voltage of the solar battery SS. A charging current is available by connecting a relay RY1 between both terminals of the AC power supply AC; switching relay contacts depending on an AC power state; Varying the values of charging resistors R3, R4. A discharging path for the battery BA serves to discharge through two relay contacts. Lighting is done by only the battery BA if lighting by the AC power supply AC and the solar battery SS is unavailable.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an emergency light lighting device including an AC power supply, a battery, a solar cell, an inverter, and a light source that is lighted by the inverter.

[0002]

2. Description of the Related Art An emergency light lighting device having an AC power supply / battery and an inverter and a light source lit by the inverter is known. The priority order of power supply to the inverter is AC power supply / battery, and the battery is used during AC power supply failure (emergency).

[0003]

The above prior arts include:
(1) The power supply during normal lighting is always an AC power source, which is uneconomical. (2) There is a problem that the emergency lighting time is short because it depends on the battery during emergency lighting. An object of the present invention is to save power by incorporating a solar cell and preferentially using it, and to extend the emergency lighting time.

[0004]

In order to achieve the above object, a solar cell is used. In addition, the priority order of power supply to the inverter is the solar cell, AC power supply, and battery in order, surplus power from the solar cell is used to charge the battery, and insufficient power from the solar cell is supplemented by the AC power supply or battery. Equipped with.

The explanation will be supplemented. According to the present invention, a relay and a Zener diode are connected in series at both ends of the solar cell,
It detects the voltage of the solar cell and switches to the AC power supply. Further, the charging current needs to be changed in the case of the AC power supply and the solar cell, and in the present invention, a relay is connected to both ends of the AC power supply, the relay contact is switched depending on the state of the AC power supply, and the value of the charging resistance is changed. Operate. The discharge path of the battery is designed to be discharged through the above two relay contacts,
The battery is lit only when it cannot be lit by the AC power source and the solar cell. Furthermore, in consideration of the case where the battery is completely discharged due to a long-term power outage, a switch for exclusive use of charging is provided to shut off the discharge path when lighting is not required, and only the solar cell is used for charging. As a result, if the user turns on the charge-dedicated switch at any time, the discharge process of the battery can be conducted and turned on.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIG. This device is AC power supply AC / Battery B
A: It has a solar cell SS. A constant current push-pull type inverter including an inductor L, a transistor Q1, a transistor Q2, and an oscillation transformer T is provided. A light source (fluorescent lamp) P that is turned on by the inverter is provided. The priority order of power supply to the inverter is solar cell SS / AC power supply AC / battery BA in order, surplus power from the solar cell SS is used to charge the battery BA, and insufficient power from the solar cell SS is from the AC power supply AC or the battery BA. A power supply control circuit to be supplemented is provided. The configuration of the power supply control circuit is as follows. Relay RY1 connected to AC power supply AC, power supply transformer DT, rectifier diode DS, solar cell switching relay RY2, Zener diodes ZD1 and ZD2, diodes D1-4, smoothing capacitor C1
-Equipped with resistors R1 to R4. Contact SW2 of relay RY1
Equipped with SW4 and SW6. Relay RY2 and its contact SW
1. SW5 is provided, and a charging switch SW3 is provided.
When lighting is possible with AC power supply AC and solar cell SS, Zener diode ZD1 is clipped and relay R
A current flows in Y2, the contact SW1 is turned off, the AC power supply AC is not applied, and the solar cell SS normally lights.
If the solar cell SS cannot light and charge the battery,
No current flows through the relay RY2, the contact SW1 is turned on, and the AC power supply AC normally lights up. When the solar battery SS can light the AC power supply AC in an emergency when the power is out, the contacts SW2 and SW6 of the relay RY1 are turned on and the voltage is set by the Zener diode ZD2. At this time, the charging current of the battery BA increases when the contact SW6 is turned on. When lighting by the solar cell SS and the AC power supply AC is impossible, the contacts SW4 and SW5 are turned on, and the battery B
A starts discharging and lights up in an emergency. Furthermore, in consideration of the case where lighting and charging by the AC power supply AC is impossible due to a long-term power failure, a charging dedicated switch SW3 is provided, and when charging is not necessary, the charging dedicated switch SW3 is appropriately turned off and the solar battery SS is used. The battery BA can be charged but the battery BA cannot be discharged.

[0007]

According to the present invention, a solar cell is incorporated,
Since this is prioritized, a power saving effect can be expected. There is also an advantage that the emergency lighting time becomes long.

[Brief description of the drawings]

FIG. 1 is an embodiment of the present invention.

FIG. 2 is a conventional emergency light lighting circuit.

[Explanation of symbols]

SS: Solar cell, RY1: Switching relay, RY2: Solar cell switching relay, R3 / R4: Charging resistance, SW3: Charging switch

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[Procedure amendment]

[Submission date] April 26, 1996

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Brief description of drawings

[Correction method] Change

[Correction contents]

[Brief description of the drawings]

FIG. 1 is an embodiment of the present invention.

[Explanation of Codes] SS: Solar Cell, RY1: Switching Relay, RY2: Solar Cell Switching Relay, R3 / R4: Charging Resistance, SW3: Switch for Charging

[Procedure amendment 2]

[Document name to be amended] Drawing

[Correction target item name] Fig. 1

[Correction method] Change

[Correction contents]

FIG.

Claims (1)

[Claims] 1. An AC power supply, a battery, and a solar cell are provided,
An inverter and a light source that is turned on by the inverter are provided, and the priority order of power supply to the inverter is solar cell / AC power source / battery. Surplus power from the solar cell is used to charge the battery, and insufficient power from the solar cell is AC. An emergency light lighting device comprising a power supply control circuit to be supplemented by a power supply or a battery.