JP6851899B2 - LED lighting device - Google Patents

Description

The present invention relates to an LED lighting device attached to the ceiling of a bathroom or a dressing room adjacent to the bathroom.

In condominiums and other condominiums, it may not be possible to install windows in bathrooms and dressing areas due to floor plan restrictions. In a house with such a structure, light from the outside cannot be taken into the bathroom or the dressing room even in the daytime. Therefore, a lighting device using a light emitting body such as an LED is attached to the ceiling of the bathroom or the dressing room. In such a lighting device, for example, there is a device in which an LED light emitting unit and a drive circuit unit that supplies electric power to the LED light emitting unit are separately configured.

If a power outage occurs during bathing, the above-mentioned lighting device is turned off, so that the bathroom or the dressing room becomes dark, which may cause inconvenience for the bather to move to the living room or the like. Therefore, the LED is made to emit light while receiving power from the outside, and a power storage means such as an electric double layer capacitor is provided in the drive circuit unit, and the power is stored in the power storage means, so that a power failure occurs. In some cases, a lighting device having a function of continuing the light emission of the LED with the stored electric power is known (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2017-62942 (paragraph [0019])

It is not necessary for all the LED lighting devices to have a backup function for continuing the LED light emission in the event of the power failure. That is, when a plurality of LED lighting devices are installed, a part of the plurality of lighting devices is sufficient as the lighting device that continues to emit light in the event of a power failure. In addition, if a lighting device that does not have such a backup function is already installed and a lighting device with a backup function is desired, it is necessary to replace it with a new lighting device that has a backup function. However, there is a problem that the cost is high if the entire luminaire or the drive circuit unit is replaced.

Therefore, in view of the above problems, it is an object of the present invention to provide an LED lighting device capable of adding a backup function at a low price.

In order to solve the above problems, the LED lighting device according to the present invention is usually supplied with electric power from an external commercial power source via a turn-off switch and supplies electric power to an LED light emitting unit installed on the ceiling and the light emitting unit thereof. In an LED lighting device equipped with a drive circuit unit that emits light in the lighting state of the above, a power storage unit that stores power supplied from the external commercial power supply and a power failure state in which the supply of power from the commercial power supply is stopped occurs. A backup circuit unit provided with a power failure detection unit for detecting the above is detachably provided between the LED light emitting unit and the drive circuit unit, and the drive circuit unit is in a state where a power failure state has not occurred in the external power supply. The backup circuit unit is provided with a power failure switching means for supplying the LED light emitting unit with the electric power output by the LED light emitting unit and causing the LED light emitting unit to emit light with the electric power stored in the power storage unit when a power failure state occurs. ..

The backup circuit unit is a detachable option, and when the backup circuit unit is not used, power is directly supplied from the drive circuit unit to the LED light emitting unit to make the LED emit light.

The backup circuit unit is configured to emit light when a power failure occurs while the LED light emitting unit is emitting light by the drive circuit unit, so that, for example, the LED light emitting unit is unmanned. It is desirable to prevent the LED from emitting light unnecessarily when a power failure occurs in a state where the LED is not emitting light.

As is clear from the above description, the present invention can add only the backup function later, and can continue to use the lighting equipment having no backup function in the state where the backup function is added.

The figure which shows the mounting state of the LED lighting fixture by this invention. Perspective view showing the main body of the LED lighting fixture and the detachable backup circuit unit. An exploded perspective view showing the structure of the LED lighting fixture body Block diagram showing the wiring status from the external commercial power supply to the LED light emitting part Block diagram showing the internal structure of the backup circuit

With reference to FIG. 1, reference numeral 1 denotes an example of a lamp that is a light emitting unit constituting the LED lighting fixture according to the present invention. This lamp 1 is called a downlight, and is attached by being fitted into a round hole formed in the ceiling CL. The lamp 1 is provided with an LED light emitting unit 2, and the LED light emitting unit 2 is configured to face the room with the lamp 1 attached to the ceiling CL.

With reference to FIGS. 2 and 3, the LED light emitting unit 2 is housed in the tubular case 11 of the lamp 1. A feeder line 13 for supplying electric power from the external drive circuit unit 3 is connected to the terminal block 12 that closes the opening above the case 11, and the DC power supplied via the feeder line 13 is The LED supplied to the LED light emitting unit 2 and mounted on the LED light emitting unit 2 is made to emit light. The drive circuit unit 3 is provided with a plurality of connection ports 31 so that a plurality of lamps 1 can be connected, and the detour 1 is connected to any one of the plurality of ports 31 as shown by a mobile phone in this embodiment. Reference numeral 5 denotes an external commercial power source, which is connected to the drive circuit unit 3 via the on / off switch 51.

With reference to FIG. 4, when a backup function for continuously emitting the lamp 1 in the event of a power failure is required, the backup circuit unit 4 is detachably added. When the backup circuit unit 4 is not attached to the lamp 1, the electric power from the drive circuit unit 3 is directly supplied to the LED light emitting unit 2 of the lamp 1 via the path A shown by the broken line in the figure.

When the backup circuit unit 4 is attached to the lamp 1, the range X surrounded by the alternate long and short dash line is changed. First, the wirings a and c branched from the feeder line 13 and the wiring b branched from between the point-off switch 51 and the commercial power supply 5 are wired to the backup circuit unit 4. Further, the path A is abolished, the output of the drive circuit unit 3 is supplied to the backup circuit unit 4 via the path B, and the output power from the backup circuit unit 4 is supplied to the lamp 1 via the path C. Change the wiring so that.

With reference to FIG. 5, a microcomputer 41 is built in the backup circuit unit 4, and a switch 42 controlled by the microcomputer 41 is provided. The switch 42 is normally in a state of directly connecting the path B and the path C, and the electric power output from the drive circuit unit 3 flows from the path B through the switch 42 to the lamp 1 through the path C. .. That is, the same power supply path as the path A is formed, and in that state, the backup circuit unit 4 is not different from the state in which it is not attached. In the state where the AC power is supplied from the wirings a and c, the microcomputer 41 stores the power in the power storage unit 43 composed of the electric double layer capacitor.

When the power supply from the power supply line 13 is stopped, it is conceivable that the on-off switch 51 is turned off or the commercial power supply 5 is out of power. When the point-off switch 51 is turned off, the potential difference between the wires a and c disappears, but the potential difference between the wires and c remains, so the microcomputer indicates that the point-off switch 51 was turned off instead of a power failure. 41 can be determined.

On the other hand, when the commercial power supply 5 has a power failure, the potential difference between the wirings bc disappears, so that the microcomputer 41 can detect the occurrence of the power failure. When the microcomputer 41 detects the occurrence of a power failure, the switch 42 is switched to cut off the path B and the path C, and the LED light emitting unit 2 has the minimum required brightness based on the electric charge stored in the power storage unit 43. The electric power to be emitted by the microcomputer 41 is output from the microcomputer 41 to the path C via the switch 42.

By acting in this way, the light emission of the LED light emitting unit 2 can be continued even if a power failure occurs. However, if the on / off switch 51 is turned off at the time of the power failure, it is considered that it is not necessary to continue the lighting. Therefore, even if the power failure occurs, the LED light emitting unit 2 is backed up by the backup function. It is desirable not to emit light.

The present invention is not limited to the above-described embodiment, and various modifications may be made without departing from the gist of the present invention.

1 Lighting equipment 2 LED light emitting part 3 Drive circuit part 4 Backup circuit part 5 Commercial power supply 11 Case 13 Feed line 41 Microcomputer 42 Switcher 43 Power storage unit 51 Point off switch

Claims (2)

LED lighting provided with an LED light emitting unit installed on the ceiling and a drive circuit unit that supplies power to the light emitting unit to emit light in a normal lighting state by supplying power from an external commercial power source via a turning on / off switch. In the device, a backup circuit unit including a power storage unit that stores electric power supplied from the external commercial power source and a power failure detection unit that detects the occurrence of a power failure state in which the supply of electric power from the commercial power source is stopped is provided. It is detachably provided between the LED light emitting unit and the drive circuit unit, and when the external power supply is not in a power failure state, the power output by the drive circuit unit is supplied to the LED light emitting unit and the power failure state is generated. An LED lighting device characterized in that the backup circuit unit is provided with a power failure switching means for causing the LED light emitting unit to emit light with the electric power stored in the power storage unit. The LED lighting device according to claim 1, wherein the backup circuit unit causes the LED light emitting unit to emit light when a power failure occurs while the LED light emitting unit is emitting light by the drive circuit unit.

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