JP2023102343A - Lighting device - Google Patents

Abstract

To provide a lighting device which does not require large-sized charging means and can be frequently and easily tested for normal functioning.SOLUTION: A power failure detection circuit is omitted, and an auxiliary light 31 is provided which lights up every time an on/off switch is turned off. In the event of a power failure, the auxiliary light 31 can be turned on to prevent the room from becoming dark, and configured to turn on every time the on/off switch is turned off, such that it is possible to quickly discover the occurrence of a failure such as the auxiliary light 31 not lighting.SELECTED DRAWING: Figure 1

Description

The present invention relates to a lighting device that illuminates a room with electric power supplied from an external commercial power source and that has a function of continuing lighting of an auxiliary light for a certain period of time when a lighting/lighting switch is turned off or power supply is stopped due to a power failure.

A light source (LED) is lit by an alternating current supplied from an external commercial power source. On the other hand, when a power failure occurs, the light sources that have been lit are turned off all at once, so that the room becomes completely dark, especially at night, and there is a problem that people in the room cannot leave.

Therefore, a lighting device has been proposed that includes a circuit for detecting the occurrence of a power failure and charging means for charging power supplied from a commercial power supply, and has a function of continuously lighting a light source with the power charged in the charging means when a power failure occurs (see, for example, Patent Document 1).

JP 2016-42756 A (paragraph [0020], FIG. 1)

In the above-described conventional lighting device, although the amount of light is suppressed when a power failure occurs, all the light sources used for indoor lighting emit light, so it is necessary to charge the charging means with a large amount of charge. Therefore, there arises a problem that the charging means is enlarged.

Moreover, it is necessary to provide a power failure detection unit for detecting the occurrence of power failure, but the provision of the power failure detection unit causes a problem that the cost of the lighting device increases. Furthermore, although the frequency of power failures is extremely low today, it is necessary to provide an expensive power failure detection unit, and it is difficult to check whether the light source can be operated normally and the light source can continue to be lit when a power failure actually occurs.

In view of the above problems, an object of the present invention is to provide a lighting device that does not require a large charging means and that can be frequently and simply tested to see if it functions normally.

In order to solve the above-mentioned problems, a lighting device according to the present invention is a lighting device comprising: a lighting device including a main lamp for indoor lighting that emits light using electric power supplied from an external commercial power supply to illuminate a room widely; and a power supply unit that lights the main lamp using the electric power supplied from the commercial power supply. It is characterized by being provided in the lamp.

In the above configuration, the auxiliary light is turned on when the power supply from the commercial power supply stops, regardless of whether there is a power failure or not, even when the on/off switch is turned off. Therefore, every time the lighting/light-out switch is turned off, the light is turned on, so it is easy to check whether there is a failure. In addition, since the auxiliary light is set to emit less light than the main light, it consumes less power per unit time than the main light. Therefore, the auxiliary light can continue to be lit for a long time even with a charging unit having a relatively small capacity.

Since the amount of light from the auxiliary lights is small, it is difficult to diffuse the light and brighten the entire room with only the auxiliary lights. Therefore, it is desirable that the luminous flux of the auxiliary light is narrowed so as to illuminate a range narrower than the illumination range of the main light so as not to make people in the room feel uneasy even in the event of a power failure.

It should be noted that the auxiliary lamp need not be turned on if the main lamp is turned on, but the auxiliary lamp may be configured to be turned on even when the main lamp is turned on.

As is clear from the above description, the present invention provides an auxiliary light that lights when the lighting/lighting switch is turned off or when a power failure occurs. Therefore, there is no need to provide a power failure detection circuit, and the cost can be reduced accordingly.

A diagram showing the configuration of an embodiment of the present invention. FIG. 1 is an external view showing an example of the configuration of a lighting fixture according to the present invention; 1 is a block diagram showing the structure of an illumination device according to the present invention; FIG.

1 and 2, 1 is a room such as a hall where unspecified people enter. 11 is the ceiling of the room 1 . Reference numeral 12 denotes a doorway of the room 1, which serves as an escape route for people in the room 1 when a power failure occurs. 13 is the floor surface of the room 1 .

On the ceiling 11 of the room 1, a plurality of indoor lighting fixtures 2 only for broadly illuminating the entire room 1 and a plurality of indoor lighting fixtures 3 each having a flange part 33 and an auxiliary light 31 which lights up for a certain period of time after the power supply is stopped are attached. These interior illumination lamps 2 and 3 incorporate LEDs like the main lamp 30 inside. Further, the main lamp is turned on and off by operating the on/off switch SW (not shown) provided on the wall surface of the room 1 .

Therefore, when the power supply from the commercial power supply PS is stopped, that is, when a power failure occurs and when the on/off switch SW is turned off, the main lamps 30 of the interior lighting fixtures 2 and 3 are turned off. On the other hand, after the main light 30 is extinguished, the auxiliary light 31 is turned on for a certain period of time to illuminate the doorway 12 (indicated by 32) so that the doorway 12 can be recognized from any position in the room 1.例文帳に追加Further, another auxiliary light 31 illuminates the floor surface 13 (indicated by 32) so that even a person entering the room 1 for the first time does not feel uneasy when a power failure occurs.

Referring to FIG. 3, AC power is supplied from an external commercial power supply PS to the power supply unit 4 of the lighting apparatus according to the present invention through the above-described ON/OFF switch SW. The AC power is converted into DC power by the AC/DC converter 41 and further transformed into DC power of a predetermined voltage by the DC/DC converter 42 before being supplied to the LED driving circuit 43 . The main lamp 30 is connected to the LED driving circuit 43, and the main lamp 30 is turned on and off when the on/off switch SW is turned on and off.

The DC power output from the DC/DC converter 42 is branched to a charging/discharging circuit 44, and the charging/discharging circuit 44 charges a capacitor 45 as a charging unit. An electrolytic capacitor is used as the capacitor 45 in this embodiment. This capacitor 45 is fully charged in a relatively short time. Therefore, as soon as the lighting/light-out switch SW is turned on, the battery is fully charged. When the capacitor 45 is fully charged, the charging/discharging circuit 44 stops charging the capacitor 45 . Note that the charging/discharging circuit 44 may supply power to the LED driving circuit 46 to light the auxiliary lamp 31 when the ON/OFF switch SW is on.

Next, when the lighting/lighting-out switch SW is turned off or a power failure occurs, the main lamp 30 is extinguished and no power is supplied to the charging/discharging circuit 44, the charging/discharging circuit 44 operates to supply the power charged in the capacitor 45 to the LED drive circuit 46 to light the auxiliary lamp 31.

In this way, when the auxiliary light 31 is turned on by the power charged in the capacitor 45, the power charged in the capacitor 45 is gradually consumed, so that the auxiliary light 31 is extinguished after a certain period of time. This fixed period of time can be freely set according to the amount of light when the auxiliary light 31 is turned on and the capacity of the capacitor 45, but it is preferable to set it to several minutes.

It should be noted that the present invention is not limited to the embodiments described above, and various modifications may be made without departing from the gist of the present invention.

1 indoor 2 indoor lighting fixture 3 indoor lighting fixture 4 power supply section 11 ceiling 12 doorway 13 floor surface 30 main light 31 auxiliary light

Claims (3)

A lighting device comprising a main lamp for indoor lighting that emits light by electric power supplied from an external commercial power supply and illuminates a room widely, and a power supply unit that lights the main lamp by the power supplied from the commercial power supply, wherein the power supply unit is provided with a charging unit that is charged by the electric power from the commercial power supply, and when the power supply from the commercial power supply is stopped, the lighting device is provided with an auxiliary lamp that is lit with the power charged in the charging unit with a light amount less than the light amount of the main lamp. 2. The illumination device according to claim 1, wherein the auxiliary light has a narrowed luminous flux and illuminates a range narrower than the illumination range of the main light. 3. The lighting device according to claim 1, wherein the auxiliary light is lit even when the main light is lit.

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