JPS6252889A - Incandescent emergency lamp apparatus - 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 [Field of Industrial Application] The present invention relates to an incandescent emergency lighting device that is lit by an emergency battery.

[Prior Art] As shown in Figure 3, a conventional incandescent emergency light device includes an appliance A incorporating a lighting circuit, a socket for attaching an emergency light, and a battery connection terminal a, an incandescent emergency light, and a battery 3a. This means that even if the incandescent emergency light is removed at the time of shipment, if the battery is attached, a discharge current will flow and the battery will be discharged. That is, as shown in the second diagram, the rectified and smoothed output of the rectifier D1 and capacitor C on the secondary side of the transformer T of the commercial power supply is supplied to the battery Ba through the charging Ti adjustment resistor R1 and the diode D2, and the battery Ba is charged. In the event of a power outage, the resistor R
2. The transistor Q2 of the drive circuit connected to the resistor R3 was turned on by the battery 13a, which turned on the switching transistor Q1 and turned on the incandescent emergency light 1a.

[Problems to be Solved by the Invention] In the conventional incandescent emergency light device as described above, even if the incandescent emergency light La is removed from the socket terminal at the time of shipment, if the battery 3a is attached and the drive is There was a problem in that the battery discharge current flows through the circuit, discharging the battery more than the natural discharge and causing the battery to be exhausted before it reaches the customer.

Therefore, the present invention provides a non-contact switching type incandescent emergency lighting device that prevents the battery from discharging and becoming exhausted during shipping as described above.

[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention connects in series to the emergency lights a drive circuit for a switching transistor that switches from commercial power to a battery during a power outage to turn on the emergency lights. It is something.

[Function] Since the incandescent emergency light is removed and shipped even if the battery is attached during shipping, the battery discharge current flows through the incandescent emergency light and the drive circuit connected in series with it. will not be closed during shipping,
Discharge is prevented.

(Example〕 Embodiments of the present invention will be described below with reference to FIG.

AC is commercial power supply, ■ is for battery charging 1! 9a is a battery for lighting an emergency light, la is an incandescent emergency light that lights up during a power outage, and b is a socket terminal to which the incandescent emergency light La is attached and connected.

Dl is a diode bridge rectifier connected to the secondary side of the power transformer T, and C is a smoothing capacitor, whose rectified and smoothed output supplies a charging current ff1ffi to the battery 8a via a charging adjustment resistor R1 and a diode D2.

Ql is a switching transistor that switches to the battery and lights up the emergency light in the event of a commercial power outage; its emitter is connected between the diode D2 and the positive terminal of the battery Ba, and its collector is connected to the incandescent emergency light 1a.

Ql is a transistor for driving the switching transistor Q1, and its collector is connected in series with the collector of the switching transistor Q1 to the incandescent emergency light 1a via a resistor R2, and the base is connected to the incandescent emergency light La via a resistor R3. In addition to connecting in series with
Connect to the rectified smoothing output side of No.1.

In this way, the drive transistor Q2 and the resistor R2
, R3 form a drive circuit for driving the switching transistor Q1, which is connected in series with the incandescent emergency light 1-a, so that when the incandescent emergency light La is removed from the mounting socket terminal, the drive circuit is This means that there is a circuit.

The incandescent emergency light device of the present invention is configured as described above, and when the device is used, when charging the battery Ba, the charge ff1vJ! Charge Il resistor R1
? Since the lf current flows, the transistors Q1 and Ql are reverse biased and turned off, so the incandescent emergency light la does not light up.

Further, in the event of a power outage of the commercial m power source, the transistors Q1 and Ql are forward biased by the voltage of the battery Ba, so the switching transistor Q1 is turned on and the incandescent emergency light La is turned on.

4゜When this incandescent emergency light device is shipped, the incandescent emergency light 1a is removed and shipped even if the battery Ba is attached, so the transistor Q1 connected in series to the incandescent emergency light 1a is , Ql
, the path of the discharge WITli flow passing through the resistors R2 and R3 is not closed, so the battery Ba will not be discharged.

[Effects of the Invention] As mentioned above, in the incandescent emergency light device of the present invention, the drive circuit of the switching transistor that turns on the emergency light in the event of a power outage is connected in series with the emergency light, so that the incandescent emergency light device does not turn on when shipped. By being removed and shipped, battery B
This eliminates the possibility that battery a is discharged and consumed before it reaches the consumer, and therefore the battery Ba is reduced during construction.
Not only is it possible to immediately confirm that the battery is lit without having to recharge it, but there is also no need to take special measures such as disconnecting the battery before shipping, as was the case in the past.

[Brief explanation of drawings]

FIG. 1 is a circuit diagram of an embodiment of the present invention, FIG. 2 is a circuit diagram of a conventional device, and FIG. 3 is a perspective view of a conventional device. Ba: Battery. La: Emergency light. R1: Charge adjustment resistor. Ql: switching transistor. Transistor for Q2 drive.

Claims (1)

[Claims] An incandescent emergency light comprising: an incandescent emergency light connected to a battery by a switching transistor to be turned on during a power outage of commercial power; and a drive circuit connected in series to the incandescent emergency light to drive the switching transistor. Device.