JP2021034323A - Lighting system - Google Patents

Abstract

To provide a lighting device that reduces labor for inspection of a storage battery.SOLUTION: A lighting system 10 comprising a storage battery 13, a lighting circuit part 40 that lights a light source 12 by an external power source E or by a power source of the storage battery 13 in a case of blackout of the external power source E, a brightness sensor 27 that detects peripheral brightness, a clock part 45 that clocks time, an inspection part 46 that inspects the storage battery 13 and a control unit 43. The control unit 43 causes the light source 12 to be turned on and off by the lighting circuit part 40 according to peripheral brightness detected by the brightness sensor 27. The control unit 43 switches between lighting of the light source 12 by the external power source E and inspection lighting of the light source 12 by the power source of the storage battery 13 on the basis of time clocked by the clock part 45 when the light source 12 is lit, and causes the inspection part 46 to inspect the storage battery 13 after inspection lighting of the light source 12 using the power source of the storage battery 13.SELECTED DRAWING: Figure 1

Description

An embodiment of the present invention relates to a lighting device including a storage battery.

Conventionally, some lighting devices such as security lights and street lights are provided with an emergency storage battery so that the light source is turned on even when the external power supply is cut off.

When equipped with a storage battery, it is necessary to regularly inspect the storage battery for deterioration or abnormality of the storage battery. In the inspection, after the light source is turned on for a predetermined time by the power supply of the storage battery, the charge amount of the storage battery is detected to determine the deterioration or abnormality of the storage battery.

However, in order to determine the deterioration or abnormality of the storage battery, it is necessary to take a certain amount of time for the inspection to turn on the light source by the power supply of the storage battery, so that the inspection time is long and the inspection is troublesome.

JP-A-2017-195203

An object of the present invention is to provide a lighting device capable of reducing the trouble of inspecting a storage battery.

The lighting device of the embodiment includes a storage battery, an external power supply, a lighting circuit unit that lights a light source by the power supply of the storage battery when the external power supply fails, a brightness sensor that detects the ambient brightness, a timekeeping unit that measures time, and a storage battery. It is equipped with an inspection unit and a control unit for inspection. The control unit turns on and off the light source by the lighting circuit unit according to the ambient brightness detected by the brightness sensor. The control unit switches between lighting the light source by an external power source and checking and lighting the light source by the power supply of the storage battery based on the time measured by the timekeeping unit when the light source is turned on, and switches the storage battery after the inspection and lighting of the light source by the power supply of the storage battery is completed. Have the inspection department inspect it.

According to the lighting device of the embodiment, it can be expected that the storage battery is automatically inspected to reduce the labor of the inspection.

It is a block diagram of the lighting apparatus which shows one Embodiment. It is sectional drawing of the lighting apparatus of the same as above. Same as above. It is a timing chart which shows the timing of inspection lighting of a lighting apparatus in each example of (a) (b) (c).

Hereinafter, one embodiment will be described with reference to the drawings.

FIG. 2 shows a cross-sectional view of the lighting device 10. The lighting device 10 is an outdoor lighting device installed outdoors, such as a security light or a street light.

The lighting device 10 includes a housing 11, a light source 12, a storage battery 13, and a power supply unit 14 arranged in the housing 11, and a translucent cover 15 attached to the lower surface side of the housing 11.

The housing 11 is long from the base end side to the opposite front end side, and is formed in a shape in which the lower surface side is open. On the base end side of the housing 11, for example, a mounting portion 18 to be attached to a utility pole, a pole, or the like is integrally projected, and a wiring hole 19 for drawing in an external power source is provided. A daylighting hole 20 for collecting outside light is provided on the upper surface side of the housing 11.

Further, as the light source 12, for example, a plurality of light emitting elements (semiconductor light emitting elements) such as LEDs and organic ELs are used.

Further, as the storage battery 13, a rechargeable secondary battery such as a lithium ion battery is used. The storage battery 13 is housed and arranged in the space inside the housing 11. The storage battery 13 may be arranged in another place outside the housing 11.

Further, the power supply unit 14 includes a board 23 and a plurality of electric components 24 constituting the power supply circuit mounted on the board 23. A plurality of light sources 12 are also mounted on the substrate 23. In addition to the substrate 23, a light source substrate on which a plurality of light sources 12 are mounted may be used. An electric wire 25 for supplying an external power source is connected to the power supply unit 14. The electric wire 25 is inserted inside and outside the housing 11 via a bush 26 mounted in the wiring hole 19.

The electric component 24 includes a brightness sensor (illuminance sensor) 27 that receives external light through the lighting hole 20 of the housing 11 and detects the ambient brightness (illuminance) of the lighting device 10. In this brightness sensor 27, a daylighting unit 28 is used to guide outside light from the daylighting hole 20 of the housing 11. The daylighting unit 28 guides the daylighting window 30 having translucency, which is fitted into the daylighting hole 20 via the packing 29, and the outside light collected from the daylighting window 30 to the brightness sensor 27, and the outside light is inside the housing 11. It is provided with a light-shielding cylinder 31 that prevents the light from being released into.

Further, the translucent cover 15 has translucency and is attached so as to cover the lower surface side of the housing 11. The translucent cover 15 is formed with a plurality of lens portions 34 that control the light distribution corresponding to the positions of the light sources 12.

Then, the lighting device 10 is installed on, for example, a utility pole or a pole installed on the side of a road by means of a mounting portion 18 and a mounting bracket used separately. At that time, the power supply unit 14 is connected to the external power supply by the electric wire 25, and the housing 11 is grounded. In the installed state of the lighting device 10, the tip end side of the housing 11 is inclined obliquely upward, and the light source 12, the translucent cover 15, and the like are opposed to the center side of the road.

Next, FIG. 1 shows a block diagram of the lighting device 10.

The lighting device 10 includes a light source 12, a storage battery 13, and a power supply unit 14. An external power source E such as a commercial power source (commercial AC power source), a light source 12, and a storage battery 13 are connected to the power supply unit 14.

The power supply unit 14 includes a lighting circuit unit (lighting unit) 40 that lights the light source 12 by the external power source E or by the power supply of the storage battery 13 in the event of a power failure of the external power source E, and a charging / discharging unit (charging / discharging unit) that charges / discharges the storage battery 13. 41, a brightness sensor 27 that detects the ambient brightness, at least an output unit 42 for outputting inspection results, a control unit that controls the lighting circuit unit 40, charge / discharge unit 41, etc. according to the detection of the brightness sensor 27. It has 43 mag.

The lighting circuit unit 40 converts the external power source E into a predetermined lighting power source and supplies the light source 12 to the light source 12 when the external power source E is supplied, and also causes the light source 12 to light up. The power supply of 13 is converted into a predetermined power supply for lighting and supplied to the light source 12, and the light source 12 is turned on.

The output unit 42 may be, for example, a transmission unit that transmits the inspection result of the storage battery 13 wirelessly or by wire using a public line or the like. In the case of this transmitter, the inspection result of the storage battery 13 is transmitted to, for example, a server that manages the status of the plurality of lighting devices 10. Further, in the case of this transmission unit, the status of the light source 12 and the power supply unit 14 may be transmitted to a server or the like in addition to the inspection result of the storage battery 13.

When the inspector goes to the place where the lighting device 10 is installed and acquires the inspection result of the storage battery 13, the output unit 42 is a transmission unit that transmits the inspection result of the storage battery 13 to the terminal of the inspector, or the storage battery 13. It may be a display unit that displays the inspection result of. In this case, a receiving unit for receiving the inspection signal from the inspector's terminal or the remote controller is provided, and when the inspection signal is received by the receiving unit, the inspection result of the storage battery 13 is transmitted or displayed to the inspector's terminal. You may try to do it.

The control unit 43 has a function of a time measuring unit 45 for measuring time and a function of an inspection unit 46 for inspecting the storage battery 13. The inspection unit 46 detects the charge amount of the storage battery 13 and determines the life and abnormality from the voltage, current, and the like of the storage battery 13 discharged over a predetermined inspection time. The inspection result by the inspection unit 46 is stored in the storage unit of the control unit 43 so that it can be output from the output unit 42.

The control unit 43 has a function of controlling the lighting circuit unit 40 according to the ambient brightness detected by the brightness sensor 27 to turn on / off the light source 12.

Further, the control unit 43 turns on the light source 12 by the external power source E and the storage battery 13 based on the time measured by the time measuring unit 45 when the light source 12 is turned on according to the ambient brightness detected by the brightness sensor 27. It has an automatic inspection function in which the inspection unit 46 inspects the light source 12 after the inspection and lighting of the light source 12 by the power supply of the storage battery 13 by switching between the inspection and lighting of the light source 12 by the power supply of the above.

Further, the control unit 43 may detect the charge amount of the storage battery 13 by the inspection unit 46 when the external power supply E is supplied, and the charge amount of the storage battery 13 detected by the inspection unit 46 is a predetermined value. In the following cases, it has a function of not performing inspection and lighting of the light source 12 by the power supply of the storage battery 13.

Further, the control unit 43 determines the next lighting time from the past lighting time when the light source 12 is turned on according to the ambient brightness detected by the brightness sensor 27, and from this next lighting time, the storage battery 13 The light source 12 is inspected and lit by the power source. The light source 12 is lit by the external power source E for the time obtained by subtracting the inspection time.

Further, when the light source 12 is lit according to the ambient brightness detected by the brightness sensor 27, the control unit 43 switches from the lighting of the light source 12 by the external power source E to the inspection lighting of the light source 12 by the power supply of the storage battery 13. Switching from the inspection lighting of the light source 12 by the power supply of the storage battery 13 to the lighting of the light source 12 by the external power supply E and the inspection lighting of the light source 12 by the power supply of the storage battery 13 during the lighting of the light source 12 by the external power supply E. It has a function to execute switching with any one of.

Further, the control unit 43 has a function of changing the discharge rate from the storage battery 13 when the light source 12 is inspected and turned on by the power supply of the storage battery 13.

Then, the lighting device 10 configured in this way operates by the external power source E when the external power source E is supplied.

In the evening, when the surroundings of the lighting device 10 become dark and the brightness value detected by the brightness sensor 27 falls below a predetermined lighting determination threshold value, the lighting circuit unit 40 is operated by the external power supply E to turn on the light source 12. Turn it on.

On the other hand, when the surroundings of the lighting device 10 become bright at dawn and the brightness value detected by the brightness sensor 27 exceeds a predetermined extinguishing determination threshold value, the operation of the lighting circuit unit 40 is stopped and the light source 12 is turned on. Turn off the lights.

When a predetermined time has passed since the previous charge of the storage battery 13, or when the inspection unit 46 determines that the charge amount of the storage battery 13 has decreased to a predetermined value or less, the storage battery 13 is charged.

Further, in the case of a power failure of the external power source E, the power source of the storage battery 13 is discharged from the lighting device 10, and the lighting device 10 is operated by the power source of the storage battery 13.

Also in this case, when the surroundings of the lighting device 10 become dark in the evening and the brightness value detected by the brightness sensor 27 falls below a predetermined lighting determination threshold value, the lighting circuit unit 40 is turned on by the power supply of the storage battery 13. It operates and turns on the light source 12.

On the other hand, when the surroundings of the lighting device 10 become bright at dawn and the brightness value detected by the brightness sensor 27 exceeds a predetermined extinguishing determination threshold value, the operation of the lighting circuit unit 40 is stopped and the light source 12 is turned on. Turn off the lights.

Then, when the power failure is resolved and the power supply of the external power source E is resumed, the lighting device 10 operates by the external power source E as described above and charges the storage battery 13.

Further, the lighting device 10 automatically inspects the storage battery 13 by the automatic inspection function of the control unit 43. In the automatic inspection function, during the lighting period in which the light source 12 is turned on according to the ambient brightness detected by the brightness sensor 27, the light source 12 is turned on by the external power source E based on the time measured by the time measuring unit 45. The inspection unit 46 inspects the light source 12 after the inspection and lighting of the light source 12 by the power supply of the storage battery 13 by switching between the inspection and lighting of the light source 12 by the power supply of the storage battery 13. That is, in the lighting period in which the light source 12 is turned on, the time during which the light source 12 is turned on by the external power source E is used for the inspection of the storage battery 13.

For example, as shown in FIG. 3A, when the lighting period for turning on the light source 12 according to the ambient brightness detected by the brightness sensor 27 starts, first, the light source 12 is normally turned on by the external power source E. .. After a predetermined time has passed from the lighting of the light source 12 by the external power source E, the light source 12 is switched to the inspection lighting by the power source of the storage battery 13. The inspection and lighting of the light source 12 by the power source of the storage battery 13 is continued for a predetermined time or more, and when the lighting period ends, the light source 12 is turned off. Inspection of the light source 12 by the power supply of the storage battery 13 The inspection unit 46 inspects the storage battery 13 after the lighting is completed, and determines the charge amount, the life, and the abnormality of the storage battery 13.

In this case, the control unit 43 determines the next lighting time (lighting period) from the past lighting time (lighting period) when the light source 12 is turned on according to the ambient brightness detected by the brightness sensor 27. The light source 12 is turned on by the external power source E for the time obtained by subtracting the inspection time for checking and lighting the light source 12 by the power source of the storage battery 13 from this next lighting time. As a result, the inspection time for inspecting and lighting the light source 12 by the power supply of the storage battery 13 is set to an appropriate time without being short or long.

In addition, for example, by setting the inspection time for inspecting and turning on the light source 12 with the power supply of the storage battery 13 in the morning, there is an abnormality in the storage battery 13, and even if the light source is turned off during the inspection, the surroundings gradually become brighter. Less is. That is, in the middle of the night, the brightness can be ensured by the power of the external power source E.

Further, as shown in FIG. 3B, when the lighting period for lighting the light source 12 according to the ambient brightness detected by the brightness sensor 27 starts, first, the light source 12 is determined by the power supply of the storage battery 13. Check and turn on only during the check time. Inspection of the light source 12 by the power source of the storage battery 13 When the inspection time of lighting has elapsed, the light source 12 is switched to the normal lighting by the external power source E. When the lighting period ends, the light source 12 is turned off. Inspection of the light source 12 by the power supply of the storage battery 13 The inspection unit 46 inspects the storage battery 13 after the lighting is completed, and determines the charge amount, life, abnormality, etc. of the storage battery 13.

In this case, the light source 12 can be inspected and lit by the power supply of the storage battery 13 regardless of the change in the lighting period according to the ambient brightness detected by the brightness sensor 27. It is possible to improve the judgment accuracy of 13 inspections. Further, since the inspection and lighting are first performed by the power supply of the storage battery 13, the abnormality of the storage battery 13 can be detected at an early stage.

Further, as shown in FIG. 3C, when the lighting period for turning on the light source 12 according to the ambient brightness detected by the brightness sensor 27 starts, first, the light source 12 is normally turned on by the external power source E. .. After a predetermined time has passed from the lighting of the light source 12 by the external power source E, the light source 12 is switched to the inspection lighting by the power source of the storage battery 13. Next, after a predetermined inspection time has elapsed from the inspection and lighting of the light source 12 by the power source of the storage battery 13, the light source 12 is switched to the normal lighting by the external power source E. When the lighting period ends, the light source 12 is turned off. Inspection of the light source 12 by the power supply of the storage battery 13 The inspection unit 46 inspects the storage battery 13 after the lighting is completed, and determines the charge amount, life, abnormality, etc. of the storage battery 13.

In this case as well, the inspection time for inspecting and lighting the light source 12 by the power supply of the storage battery 13 can be fixed regardless of the change in the lighting period for turning on the light source 12 according to the ambient brightness detected by the brightness sensor 27. , The determination accuracy of the inspection of the storage battery 13 can be improved.

Further, when the light source 12 is inspected and turned on by the power source of the storage battery 13, the discharge rate from the storage battery 13 may be changed. For example, if the capacity of the storage battery 13 is large, a long inspection time is required, and the automatic inspection may not be completed in one lighting period based on the detection of the brightness sensor 27, but the discharge rate from the storage battery 13 is increased. By doing so, that is, by making the brightness of the light source 12 brighter than the brightness when the light source 12 is normally lit, the automatic inspection of the storage battery 13 is completed during one lighting period based on the detection of the brightness sensor 27. ..

Such automatic inspection of the storage battery 13 may be performed every time the light source 12 is turned on according to the ambient brightness detected by the brightness sensor 27, or every fixed period according to the cumulative lighting time of the light source 12 and the like. You may go to. For example, after a predetermined time such as 50 hours has elapsed for the cumulative lighting time of the light source 12, automatic inspection may be performed.

The inspection of the storage battery 13 may be a short inspection time that allows the life or abnormality of the storage battery 13 to be estimated, or a long inspection time that confirms the actual charge capacity of the storage battery 13. In this case, the inspection may be performed with a long inspection time every time the inspection with a short inspection time is performed a predetermined number of times, for example, three times.

The storage battery 13 that has been inspected is charged, but the inspection cycle is longer than the rechargeable time of the storage battery 13. That is, the storage battery 13 is fully charged by the next inspection.

Further, when the external power source E is supplied and the charge amount of the storage battery 13 detected by the inspection unit 46 is less than or equal to a predetermined value, the storage battery 13 may be insufficiently charged if a power failure occurs. Do not check and light the light source 12 by the power supply.

Then, the inspection result of the storage battery 13 is transmitted to the server by the output unit 42 or stored in the storage unit so that it can be output later.

If an abnormality such as a voltage drop in the storage battery 13 occurs while the light source 12 is inspected and lit by the power supply of the storage battery 13, the light source 12 is switched to normal lighting by the external power supply E and the light source during the lighting period. The lighting state of 12 may be maintained.

Then, according to the lighting device 10 configured in this way, the light source 12 is lit by the external power source E and the light source 12 is inspected and lit by the power source of the storage battery 13 based on the time measured by the time measuring unit 45 when the light source 12 is lit. By switching between and inspecting the light source 12 with the power supply of the storage battery 13 and inspecting the storage battery 13 after the lighting is completed by the inspection unit 46, the time when the light source 12 is turned on by the external power source E can be used for the inspection of the storage battery 13. This makes it possible to automatically inspect the storage battery 13 and reduce the time and effort required for inspection.

Further, when the external power supply E is supplied and the charge amount of the storage battery 13 detected by the inspection unit 46 is less than or equal to a predetermined value, the light source 12 is not inspected and lit by the power supply of the storage battery 13 to prepare for a power failure. It is possible to prevent the storage battery 13 from being insufficiently charged.

In addition, the next lighting time (lighting period) is determined from the past lighting time (lighting period) when the light source 12 is turned on according to the ambient brightness detected by the brightness sensor 27, and from this next lighting time. By turning on the light source 12 with the external power supply E for the time after deducting the inspection time for checking and lighting the light source 12 with the power supply of the storage battery 13, the inspection time for checking and lighting the light source 12 with the power supply of the storage battery 13 is short or long. It can be set at an appropriate time.

Further, when the light source 12 is inspected and lit by the power supply of the storage battery 13, for example, by changing the discharge rate from the storage battery 13 to a high value, even if the capacity of the storage battery 13 is large, the light source 12 is lit once based on the detection of the brightness sensor 27. The automatic inspection of the storage battery 13 can be completed during the period.

In addition to security lights and street lights, the lighting device can also be applied to other lighting devices such as garden lights that are installed outdoors and turn on and off the light source according to the brightness of the surroundings.

Although some embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other embodiments, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are also included in the scope of the invention described in the claims and the equivalent scope thereof.

10 Lighting equipment
12 light source
13 Storage battery
27 Brightness sensor
40 Lighting circuit
42 Output section
43 Control unit
45 Timekeeping
46 Inspection Department E External power supply

Claims (4)

With a storage battery;
With an external power supply or a lighting circuit unit that turns on the light source by the power supply of the storage battery when the external power supply fails;
With a brightness sensor that detects the brightness of the surroundings;
With the timekeeping part that measures the time;
With the inspection unit that inspects the storage battery;
The light source is turned on and off by the lighting circuit unit according to the ambient brightness detected by the brightness sensor, and the external power source is used based on the time measured by the time measuring unit when the light source is turned on. A control unit that switches between lighting of the light source and inspection and lighting of the light source by the power supply of the storage battery, and causes the inspection unit to inspect the storage battery after the inspection and lighting of the light source by the power supply of the storage battery is completed.
A lighting device characterized by comprising. When the light source is turned on, the control unit switches from lighting the light source by the external power source to checking and lighting the light source by the power supply of the storage battery, and from checking and lighting the light source by the power supply of the storage battery to using the external power source. It is characterized in that switching is performed by either one of switching to lighting of the light source and switching to inspection lighting of the light source by the power supply of the storage battery while the light source is being lit by the external power source. The lighting device according to claim 1. The lighting device according to claim 1 or 2, further comprising an output unit that outputs an inspection result by the inspection unit. The lighting device according to any one of claims 1 to 3, wherein the control unit changes the discharge rate from the storage battery when the light source is inspected and turned on by the power source of the storage battery.

Images