JP6774638B2 - Lighting device - Google Patents

Description

An embodiment of the present invention relates to a lighting device that lights a light source using a battery as a power source when an external power source is cut off.

Conventionally, as a lighting device having a built-in battery, for example, an emergency lighting device, an emergency light, an guide light, or the like is known. As such a lighting device, there is a configuration including a wireless signal transmitting unit that transmits notification information to the external device by using a reception of a request signal from an external device such as a remote controller as a trigger.

In recent years, an application (application) corresponding to a beacon transmitted from this beacon transmitting unit has been used by using a beacon transmitting unit that periodically transmits a beacon (BLE signal) which is a wireless signal within a predetermined distance range at predetermined time intervals. There is a system that notifies and displays by an application when a mobile terminal such as an installed smartphone receives a beacon. By applying such a system to the wireless signal transmission unit of the above-mentioned lighting device, if the owner of the mobile terminal approaching within a predetermined distance range is operating the application, an operation such as inputting a request signal is performed. It is conceivable to make it possible to easily notify the information without performing.

Japanese Unexamined Patent Publication No. 2013-258024

However, since the beacon transmitting unit emits the beacon periodically every short time, the battery is consumed if the beacon transmitting unit is effective when the power is switched to the battery in the event of a power failure. Therefore, it is desired that the lighting time of the light source at the time of emergency lighting is not shortened due to the power consumption in the beacon transmitting unit.

An object to be solved by the present invention is to provide a lighting device capable of monitoring and notifying information using a wireless signal and ensuring a lighting time of a light source when an external power supply is cut off.

The lighting device of the embodiment includes a light source, a battery, and a power supply device. The power supply device includes a charging circuit, a lighting circuit, and a wireless signal transmitting unit. The charging circuit charges the battery. The lighting circuit lights the light source. The radio signal transmission unit periodically transmits a radio signal. When the external power supply is not cut off, the power supply device uses the external power supply as the power supply for the charging circuit and the wireless signal transmission unit, and uses the external power supply as the power supply for the wireless signal transmission unit during inspection, and uses wireless signals other than the information related to the inspection as the wireless signal transmission unit. When the external power supply fails, the battery is used as the power source for the lighting circuit and the operation of the wireless signal transmission unit is stopped.

According to the present invention, when the external power supply is not cut off, the external power supply is used as the power supply for the charging circuit of the power supply device and the wireless signal transmission unit, and when the inspection is performed, the external power supply is used as the power supply for the wireless signal transmission unit of the power supply device. It is possible to monitor the lighting device and notify the information using the wireless signal by using a terminal that periodically sends out the wireless signal from the device and receives the wireless signal, and the battery is used as the power supply device in the event of a power failure of the external power supply. Since the operation of the wireless signal transmission unit is stopped as well as the power supply for the lighting circuit of the above, it can be expected that the battery consumption by the wireless signal transmission unit at the time of power failure of the external power supply is prevented and the lighting time of the light source is secured.

It is a circuit diagram which shows the lighting apparatus of one Embodiment. It is the flowchart which shows the operation of the control means of the lighting apparatus.

Hereinafter, the configuration of one embodiment will be described with reference to FIGS. 1 and 2.

In FIG. 1, the lighting device 11 is an emergency light that lights up in an emergency such as a power failure, and is installed above a corridor, a passage, or the like.

The lighting device 11 is a power supply device that lights the light source 16, the battery 17, the terminal block 19 connected to the external power supply 18, and the light source 16 to charge the battery 17, and periodically sends out a wireless signal. It is equipped with 20 and is housed inside a housing (not shown).

The lighting device 11 can be applied to all indoor or outdoor lighting devices powered by the battery 17, such as an guide light provided with a regular lighting circuit. Further, the type is not limited to the ceiling-embedded type, and may be installed by other installation means such as a direct mounting type or a ceiling-mounted type.

As the light source 16, for example, a semiconductor light emitting element such as a light emitting diode (LED) or a laser diode, or an organic EL element (OLED) is used, and is configured to emit white light, for example.

The battery 17 is a rechargeable secondary battery such as a NiCd battery, a nickel metal hydride battery, or a lithium ion battery.

The external power supply 18 can be any power source such as a commercial AC power source or a DC power source. In the present embodiment, for example, the external power supply 18 is a commercial AC power supply.

The terminal block 19 electrically connects the external power supply 18 and the power supply device 20 via an electric wire (not shown).

In the power supply device 20, a rectifier circuit 23 is connected to the external power supply 18, and a smoothing element such as a power supply monitoring circuit 24 for monitoring the supply of the external power supply 18 and an electrolytic capacitor is located in the subsequent stage on the output side of the rectifier circuit 23. 25, and a series circuit (step-down circuit) of the primary side of the transformer Tr and the power supply circuit 26 using, for example, IPD as a power device are sequentially connected.

Further, on the secondary side of the transformer Tr, a charging circuit 31 such as a constant current circuit that charges the battery 17 with an external power supply 18 via a rectifying smoothing circuit of a rectifying element 28 such as a diode and a smoothing element 29 such as an electrolytic capacitor 31. , The emergency lighting circuit 32 as a lighting circuit for lighting the light source 16 using the battery 17 as a power source when the battery 17 and the external power supply 18 are shut off is sequentially connected. A light source 16 is connected to the emergency lighting circuit 32. Further, the control means 34 is connected to the output side of the rectifying / smoothing circuit and the output side of the battery 17 via diodes D1 and D2, respectively, and the radio signal transmission unit 36 is connected in parallel with the control means 34. It is connected via a break circuit 37.

The control means 34 is, for example, a microcomputer or the like, and a power supply monitoring circuit 24, a charging circuit 31, an emergency lighting circuit 32, and a cutoff circuit 37 are connected to the control means 34, respectively. Then, based on the monitoring status by the power supply monitoring circuit 24, the control means 34 charges the battery 17 by the charging circuit 31 when the external power supply 18 is supplied. Further, when the external power supply 18 is cut off, for example, during inspection or power failure, the control means 34 uses the battery 17 as a power source and uses the emergency lighting circuit 32 to use the light source 16 for a predetermined time (for example, 30 for an emergency light). Minutes, guide lights are configured to light for 20 minutes or 60 minutes or more.

The wireless signal transmission unit 36 is also called a beacon module or the like, and when the external power supply 18 is supplied, the wireless signal transmission unit 36 is constantly supplied to a predetermined distance range by the power supply from the external power supply 18 every predetermined time (for example, 100 to several hundred milliseconds). The radio signal (beacon) is continuously transmitted periodically, and when the external power supply 18 is cut off, the power supply is cut off by the cutoff circuit 37, so that the operation is stopped and becomes invalid. The radio signal output from the radio signal transmission unit 36 is a BLE (Blue Application (registered trademark) Low Energy) signal including identification information such as an ID (UUID) for identification and information indicating distance information from a mobile terminal. By receiving this wireless signal by a wireless signal receiver normally provided in a mobile terminal such as a smartphone or tablet PC, the identification information included in the wireless signal pre-installed in the mobile terminal or the like can be obtained. The corresponding application (app) queries the server, which is an external storage device, for this identification information, and the response from the server indicates, for example, the charging status of the battery 17, the installation date of the lighting device 11, the location information of the mobile terminal, that is, the mobile device. The application is configured to perform predetermined display and notification of various information of the lighting device 11, such as the position information of the owner of the terminal and the emergency evacuation route from this position. As the wireless signal transmitting unit 36, a system such as iBeacon (registered trademark) using BLE communication technology is preferably used together with the wireless signal receiving unit of each mobile terminal. For example, information on the operating current of the wireless signal transmission unit 36 is fed back to the control of the power supply circuit 26.

The cutoff circuit 37 is located in the power supply path from the battery 17 to the wireless signal transmission unit 36, and functions as a switch for opening and closing the power supply path. The cutoff circuit 37 may electrically cut off the power supply from the battery 17 to the wireless signal transmission unit 36, or may cut off mechanically.

When the external power supply 18 is supplied (always), the power supply device 20 charges the battery 17 by the external power supply 18 and periodically transmits a wireless signal from the wireless signal transmission unit 36, and the external power supply 18 In the event of a power failure in the present embodiment, the battery 17 is used as a power source, and the light source 16 is turned on with the operation of the wireless signal transmitting unit 36 stopped.

Next, the operation of the lighting device 11 will be described.

In the normal time when power is supplied from the external power source 18, the battery 17 is charged by the charging circuit 31, and the wireless signal is periodically transmitted from the wireless signal transmitting unit 36 at predetermined time intervals. Therefore, when the owner of the mobile terminal on which the application corresponding to the identification information included in the wireless signal from the wireless signal transmitting unit 36 is installed is located near the lighting device 11, the wireless signal from the wireless signal transmitting unit 36 The application operated by the identification information contained in is displayed or notified of the information provided by the server.

On the other hand, in an emergency (during a power failure) when the external power supply 18 is cut off, the power supply monitoring circuit 24 detects that the power supply of the external power supply 18 is stopped, and the control means 34 turns on the light source 16 by supplying power from the battery 17. In addition to controlling the operation of the emergency lighting circuit 32, the cutoff circuit 37 opens the power supply path to the wireless signal transmission unit 36 to stop the operation of the wireless signal transmission unit 36, and the emergency lighting circuit 32 becomes the battery 17 The lighting of the light source 16 is started based on the power supply by.

Summarizing the operation of the control means 34 in the flowchart of FIG. 2, the control means 34 determines whether or not there is power supplied from the external power supply 18 by the power supply monitoring circuit 24 (step 1), and the control means 34 determines whether or not there is power supply from the external power supply 18. When it is determined that there is power supply (no power failure), the battery 17 is charged by the external power supply 18 by the charging circuit 31 (step 2), and the wireless signal transmission unit 36 is operated by the external power supply 18 (step 3). , Return to step 1. Further, when the control means 34 determines in step 1 that there is no power supply from the external power source 18 (power failure), the control means 34 operates the emergency lighting circuit 32 so as to light the light source 16 by the power supply by the battery 17. (Step 4), the power supply to the radio signal transmission unit 36 is cut off by the cutoff circuit 37 (step 5), and the process returns to step 1.

In this way, by providing the wireless signal transmitting unit 36 that periodically transmits the wireless signal by the power supply from the external power source 18, the lighting device 11 using the wireless signal is monitored by using a terminal or the like that receives the wireless signal. And information can be notified, and when the external power supply 18 is not shut off, the external power supply 18 is used as the power supply for the power supply device 20, and when the external power supply 18 is cut off, the battery 17 is used as the power supply for the power supply device 20 and wirelessly. Since the operation of the signal transmission unit 36 is stopped, the consumption of the battery 17 by the radio signal transmission unit 36 when the external power supply 18 is cut off can be prevented, and the lighting time of the light source 16 can be secured. Therefore, the battery 17 only needs to have a minimum capacity for lighting the light source 16 for a predetermined time or longer, and the battery 17 can be miniaturized.

That is, since the wireless signal transmission unit 36 periodically transmits a wireless signal, the power consumption of the battery 17 is large. Therefore, by disabling the wireless signal transmitting unit 36 at the time of emergency lighting, unnecessary consumption of the battery 17 can be suppressed, and the lighting time of the light source 16 can be secured without increasing the capacity of the battery 17 more than necessary.

Further, by providing a cutoff circuit 37 capable of cutting off the power supply path from the battery 17 to the wireless signal transmission unit 36 when the external power supply 18 is cut off, the cutoff circuit 37 is operated at the time of inspection for checking the charging state of the battery 17, for example. It is possible to supply power from the battery 17 to the wireless signal transmission unit 36 without causing it, and it is possible to check the operation of the wireless signal transmission unit 36, etc., and the cutoff circuit 37 from the battery 17 to the wireless signal transmission unit 36 only in the event of a power failure. By shutting off the power supply of the battery 17, it is possible to prevent the battery 17 from being consumed by the wireless signal transmitting unit 36 in the event of a power failure.

In the above embodiment, for example, when the power supply from the battery 17 to the wireless signal transmission unit 36 is not required at the time of inspection, the power supply path from the battery 17 to the wireless signal transmission unit 36 is not provided and the wireless signal transmission unit is not provided. It is also possible to make the 36 operate only with the power from the external power supply 18.

Further, the cutoff circuit 37 is not only opened and closed by the control means 34, but also automatically opened and closed by shutting off the external power supply 18, such as a relay that is turned on by energizing the external power supply 18 and turned off by shutting off the external power supply 18. It can also be configured to be.

Further, the wireless signal transmitting unit 36 may include, for example, a wireless signal receiving unit to enable bidirectional wireless communication.

Then, in addition to the emergency lighting circuit 32, a constant lighting circuit that lights the light source 16 when the external power supply 18 is supplied may be provided.

Although one embodiment of the present invention has been described, this embodiment is presented as an example and is not intended to limit the scope of the invention. This novel embodiment can be implemented in various other embodiments, and various omissions, replacements, and changes can be made without departing from the gist of the invention. This embodiment and its modifications 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.

11 Lighting equipment
16 Light source
17 Battery
18 External power supply
20 Power supply
31 Charging circuit
32 Emergency lighting circuit as a lighting circuit
36 Wireless signal transmitter
37 Break circuit

Claims (2)

With a light source;
With battery;
A charging circuit for charging the battery and
A lighting circuit that lights the light source and
It is provided with a radio signal transmission unit that periodically transmits a radio signal, the external power supply is used as the power supply for the charging circuit and the radio signal transmission unit when the external power supply is not cut off, and the external power supply is used as the power supply for the radio signal transmission unit during inspection. The radio signal other than the information related to inspection as a power source is periodically transmitted from the radio signal transmission unit , and when the external power supply fails, the battery is used as the power source of the lighting circuit and the operation of the radio signal transmission unit is stopped. With a power supply to let
A lighting device characterized by being equipped with. The lighting device according to claim 1, wherein the power supply device includes a cutoff circuit capable of cutting off a power supply path from the battery to the wireless signal transmission unit in the event of a power failure of an external power source.

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