JP2018195470A - LED lighting device - Google Patents

Abstract

To solve the problem, in which, while in an LED lighting device fed from an external commercial power supply, there is a backup function that uses electric charge charged at a time of energization to continuously emit light at a time of power failure, all LED lighting devices do not necessarily require a backup function, but, if a backup function is needed later, replacing it with a lighting fixture that has a backup function is required, resulting in higher costs.SOLUTION: A backup circuit unit 4 whose backup function is made independent is made to be detachably insertable between a lamp 1 and a drive circuit unit 3.SELECTED DRAWING: Figure 4

Description

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

  In apartment houses such as condominiums, there are cases where windows cannot be provided in bathrooms and dressing rooms due to floor plan restrictions. In a house with such a structure, light from the outside cannot be taken into the bathroom or dressing room even during the daytime. Therefore, a lighting device using a light emitter such as an LED is attached to the ceiling of the bathroom or dressing room. In such an illuminating device, for example, an LED light emitting unit and a drive circuit unit that supplies power to the LED light emitting unit are configured separately.

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

JP 2017-62942 A (paragraph [0019])

  It is not necessary for all LED lighting devices to have a backup function for continuing LED emission during the power failure. That is, when installing a plurality of LED lighting devices, a part of the plurality of lighting devices is sufficient as the lighting device that continues to emit light during a power failure. Further, when a lighting device with a backup function is desired in a state where a lighting device having no backup function is already installed, it is necessary to replace the lighting device with a backup function. However, if the entire lighting fixture or the drive circuit unit is replaced, there is a problem that the cost becomes high.

  Then, this invention makes it a subject to provide the LED lighting apparatus which can add a backup function at low cost in view of said problem.

  In order to solve the above problems, an LED lighting device according to the present invention is usually supplied with electric power from an external commercial power source via a turn-on / off switch, and supplies power to the LED light emitting unit installed on the ceiling and the light emitting unit. In an LED lighting device having a drive circuit unit that emits light in the illumination state, a power storage unit that stores electric power supplied from the external commercial power source, and a power outage state in which the power supply from the commercial power source stops A backup circuit unit having a power failure detection unit for detecting the power supply is detachably provided between the LED light emitting unit and the drive circuit unit, and the drive circuit unit is in a state where no power failure has occurred in the external power source. Supply power to the LED light-emitting unit, and when a power failure occurs, the power-off switching means for causing the LED light-emitting unit to emit light with the electric power stored in the power storage unit is provided. Characterized by providing the circuit portion.

  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 cause the LED to emit light.

  In addition, the backup circuit unit is configured to cause the LED light emitting unit to emit light when a power failure occurs in a state in which the LED light emitting unit is emitting light by the drive circuit unit. It is desirable not to cause the LED to emit light unnecessarily when a power failure occurs in a state where no light is emitted.

  As is apparent from the above description, the present invention can add only the backup function later, and can continue to use the lighting fixture having no backup function with the backup function added.

The figure which shows the attachment state of the LED lighting fixture by this invention The perspective view which shows LED lighting fixture main body and the detachable backup circuit part Exploded perspective view showing the structure of the LED lighting fixture body Block diagram showing wiring from external commercial power source to LED light emitting unit Block diagram showing the internal structure of the backup circuit

  With reference to FIG. 1, 1 is an example of the lamp | ramp which is a light emission part which comprises the LED lighting fixture by this invention. The 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 faces 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 accommodated in a cylindrical case 11 of the lamp 1. The terminal block 12 that closes the opening above the case 11 is connected to a power supply line 13 that supplies power from the external drive circuit unit 3. The DC power supplied through the power supply line 13 is The LED which is supplied to the LED light emitting unit 2 and mounted on the LED light emitting unit 2 is caused 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 one of the plurality of ports 31 as shown in the present embodiment. Reference numeral 5 denotes an external commercial power supply, which is connected to the drive circuit unit 3 through a lighting switch 51.

  Referring to FIG. 4, when a backup function for continuously lighting light 1 when a power failure occurs is required, backup circuit unit 4 is detachably added. In a state where the backup circuit unit 4 is not attached to the lamp 1, the power from the drive circuit unit 3 is directly supplied to the LED light emitting unit 2 of the lamp 1 via a path A indicated by a broken line in the drawing.

  When the backup circuit unit 4 is attached to the lamp 1, the range X surrounded by the two-dot chain line is changed. First, the wirings a and c branched from the power supply line 13 and the wiring b branched from between the lighting switch 51 and the commercial power supply 5 are wired to the backup circuit unit 4. Further, the path A is abolished, and 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.

  Referring to FIG. 5, a microcomputer 41 is built in the backup circuit unit 4, and a switch 42 that is 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 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 that of the path A is formed, and in this state, the backup circuit unit 4 is not different from the state in which it is not attached. Note that the microcomputer 41 stores power in the power storage unit 43 including an electric double layer capacitor in a state where AC power is supplied from the wirings a and c.

  When power supply from the power supply line 13 is stopped, the lighting switch 51 may be turned off or the commercial power supply 5 may be out of power. When the lighting switch 51 is turned off, the potential difference between the wirings a and c disappears, but the potential difference between the wirings b and c remains. Therefore, the microcomputer indicates that the lighting switch 51 is not turned off but a power failure. 41 can be determined.

  On the other hand, when the commercial power supply 5 fails, the microcomputer 41 can detect the occurrence of the power failure because there is no potential difference between the wires bc. When the microcomputer 41 detects the occurrence of a power failure, the switch 42 is switched to cut off the route B and the route C, and the LED light emitting unit 2 is made to have the minimum luminance based on the electric charge stored in the power storage unit 43. Power to be emitted from the microcomputer 41 via the switch 42 to the path C.

  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 lighting switch 51 is turned off when a power failure occurs, it is considered that it is not necessary to continue the illumination. Therefore, even if a power failure occurs, the LED light emitting unit 2 can be operated by the backup function. It is desirable not to emit light.

  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 Lamp 2 LED light emission part 3 Drive circuit part 4 Backup circuit part 5 Commercial power supply 11 Case 13 Feeding line 41 Microcomputer 42 Switching device 43 Power storage part 51 Light-off switch

Claims (2)

  LED lighting comprising an LED light-emitting unit installed on the ceiling and supplied with electric power from an external commercial power source via a lighting switch, and a drive circuit unit that supplies power to the light-emitting unit to emit light in a normal lighting state In the apparatus, 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 occurrence of a power failure state in which power supply from the commercial power source stops, While being detachably provided between the LED light emitting unit and the drive circuit unit, the power output from the drive circuit unit is supplied to the LED light emitting unit in a state where no power failure has occurred in the external power source, and the power failure state An LED lighting device, wherein a power failure switching means for causing the LED light emitting portion to emit light with the electric power stored in the power storage portion is provided in the backup circuit portion.   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 in a state where the LED light emitting unit is emitting light by the drive circuit unit.

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