JP2015125960A - Illuminating fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To resolve a problem that, for an illuminating device lightened at interruption of service, only such a device lightened normally and continuing the lighting at interruption of service and such a device extinguished normally and starting lighting at interruption of service are provided, and there are no device that can be lightened and extinguished by a switch at energization from an external power supply and that can be used as a normal illuminating fixture.SOLUTION: An illuminating fixture comprises: a charging circuit part charging a charging part independently of an on/off state of a switch; and a service interruption detector detecting that supply of power from a commercial power supply is stopped. When the service interruption detector detects an occurrence of service interruption, a light-emitting part is made to emit light by a power charged in the charging part.

Description

  The present invention relates to a lighting apparatus that is automatically turned on when a power failure occurs.

  As such lighting fixtures, those that are connected to an external commercial power source, and when the supply of power from the external power source is stopped, the light emitting unit is turned on with the power stored in the capacitor when the power is supplied. ing.

  As such a lighting fixture that is lit when a power failure occurs, it is normally lit with electric power from an external power source at normal times, and continues to be lit even if a power failure occurs (for example, Patent Document 1). (See, for example, Patent Document 2).

JP 2006-236934 A (paragraph 0006) Japanese Patent Laying-Open No. 2005-93251 (paragraph 0021)

  As described in the above-mentioned Patent Document 1, in a lighting fixture that is lit when energized and continues to be lit even if a power failure occurs, it is always lit when energized. Otherwise, it cannot be used in the same way as a normal lighting fixture that is turned off in other states. In addition, although what was described in the said patent document 1 is equipped with the switch, since it will be in the state which generate | occur | produced the pseudo power failure if this switch was turned off, it will continue to light as it is and all the stored electric power will be consumed. Since the light is turned off after a predetermined time (about 1 hour in the description) elapses, it is not practical.

  In addition, as described in Patent Document 2, the lighting fixture that is normally turned off and is turned on when a power failure occurs has a check switch, and when the check switch is turned off, a pseudo power failure occurs. When the check switch is turned on, the power is turned on and the light is turned off. Although it seems that it can be used as a normal lighting fixture at a glance with such an action, it is turned off only after the predetermined time has elapsed since it is turned on only with the electric power stored inside while the inspection switch is turned off and turned on. After all, it is not practical.

  Therefore, in view of the above-described problems, an object of the present invention is to provide a lighting fixture that can freely switch between lighting and extinguishing during energization and that automatically lights up when a power failure occurs.

  In order to solve the above-described problems, a lighting fixture according to the present invention is a lighting fixture that receives power from an external commercial power source and causes a light emitter to emit light, and includes a switch that turns on and off the light emitter. A charging circuit unit that charges the charging unit regardless of the on / off state of the power supply, and a power failure detection unit that detects that power supply from the commercial power supply has stopped, and when the power failure detection unit detects the occurrence of a power failure, The light emitting unit is caused to emit light by power charged in the charging unit.

  In a so-called energized state in which power is supplied from an external power source, the charging unit is charged regardless of whether the switch for turning on / off is on or off. And in the state which the electric power supply from the external power supply stopped, ie, a power failure state, the light emission part is turned on with the electric power charged in the charging part.

  In addition, it is desirable that such a luminaire is attached below the main luminaire installed on the indoor ceiling and used as a sub-luminaire.

  As is apparent from the above description, the present invention is automatically turned on when a power failure occurs, so that the surroundings of the lighting fixture are not dark, and for example, a flashlight can be searched for calmly. Moreover, it can be used as a lighting fixture that can be turned on and off by operating a switch in the same way as a normal lighting fixture when energized.

The figure which shows the attachment state and external appearance of one embodiment of this invention Block diagram showing the configuration inside the lighting fixture

  Referring to FIG. 1, reference numeral 1 denotes a lighting fixture according to the present invention. This lighting fixture is attached to the bottom surface BF of the hanging cupboard DB of the kitchen. A lighting fixture (not shown) is separately attached to the ceiling in the kitchen, and the entire kitchen is illuminated by the lighting fixture on the ceiling. However, it is provided to light up the lighting fixture 1 and individually illuminate the lower part of the hanging cupboard DB when it is desired to make the hand brighter during cooking or the like. The lighting fixture 1 is provided with a switch 11 for turning on and off, and an LED 41 (described later) provided in the illumination unit 12 is turned on or off by individually turning on and off the switch 11.

  Referring to FIG. 2, the lighting apparatus 1 is turned on when power is supplied from an external commercial power source 3, and a power failure detection circuit for detecting that power supply from the external commercial power is stopped. 2 is provided. And it branches on the downstream of this power failure detection circuit 2, and one side is connected to the drive circuit 4 of LED41, and the other is connected to the charging circuit 5.

  Since the switch 11 for turning on and off is provided between the power failure detection circuit 2 and the drive circuit 4, when the switch 11 is turned on, AC power is supplied to the drive circuit 4 and the LED 41 is lit. . Further, when the switch 11 is turned off, AC power is not supplied to the drive circuit 4, and thus the LED 41 is turned off.

  A capacitor 51, which is a charging unit, is connected to the charging circuit 5, and the capacitor 51 is always charged regardless of whether the switch 11 is on or off.

  When a power failure occurs, the supply of power from the commercial power supply 3 stops, so that no current flows from the drive circuit 4 to the LED 41 even when the switch 11 is on. On the other hand, when a power failure occurs, a power-on signal is output from the power failure detection circuit 2 to the charging circuit 5.

  When this lighting signal is input, the charging circuit 5 outputs a current so as to light the LED 41 with the electric power charged in the capacitor 51. Therefore, regardless of whether the switch 11 is on or off, the power from the capacitor 51 is supplied by the occurrence of a power failure, and the LED 41 is lit.

  The lighting duration in the power failure state is increased or decreased depending on the capacity of the capacitor 51. However, even if a power failure occurs, the LED 41 continues to be lit for a while, so that a flashlight or the like can be searched during that time.

  By the way, the luminaire according to the present invention can be applied to those attached to a hanging cabinet DB of a kitchen, and can be applied to, for example, a stand placed in a living room or a reading lamp placed on a bedside of a bedroom.

  In addition, this invention is not limited to an above-described form, You may add a various change in the range which does not deviate from the summary of this invention.

DESCRIPTION OF SYMBOLS 1 Lighting fixture 2 Power failure detection circuit 3 Commercial power supply 4 Drive circuit 5 Charging circuit 11 Switch 51 Capacitor DB Hanging cabinet

Claims (2)

  A lighting circuit that receives power from an external commercial power source and causes a light emitter to emit light, and has a switch that turns on and off the light emitter, and a charging circuit unit that charges the charging unit regardless of the on / off state of the switch And a power failure detection unit that detects that the power supply from the commercial power supply has stopped, and when the power failure detection unit detects the occurrence of a power failure, the light emitting unit emits light by the power charged in the charging unit. A lighting apparatus characterized in that   The luminaire according to claim 1, wherein the luminaire is mounted as a lower luminaire and is installed at a position lower than a main luminaire installed on an indoor ceiling.

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