JP2019135709A - Lighting fixture - Google Patents

Abstract

To easily give notice of a small electric variable related to electric power supplied from an external power supply to a lighting circuit even when the lighting circuit is a power supply separate type supplied with electric power from the external power supply.SOLUTION: A lighting fixture 1 comprises a light source, a lighting circuit 31, a determination unit 36, and a notification unit (for example, a monitor lamp 35). The light circuit 31 is stored in a main body, and supplied with electric power from an external power supply 6 provided outside the main body to turn on the light source. The determination unit 36 determines whether an electric variable related to the electric power supplied from the external power supply 6 to the lighting circuit 31 is within a reference range. The notification unit gives notice of a determination result of the determination unit 36 when the determination unit 36 determines that the electric variable is not within the reference range.SELECTED DRAWING: Figure 1

Description

  The present invention generally relates to a lighting fixture, and more particularly, to a lighting fixture that turns on a light source when power is supplied from an external power source.

  2. Description of the Related Art Conventionally, there is known an emergency lighting fixture that receives power supplied from a standby power source (external power source) and turns on a light source in an emergency (see, for example, Patent Document 1). The emergency lighting fixture described in Patent Document 1 includes an LED (Light Emitting Diode) that constitutes a light source unit, a fixture body, and a lighting circuit. The instrument body is provided with a light source unit. The lighting circuit is a circuit for lighting the LED. The standby power source is located at a location different from the emergency lighting fixture.

JP 2012-113906 A

  As described above, the conventional emergency lighting fixture described in Patent Document 1 is supplied with electric power from an external power source disposed at a location different from the emergency lighting fixture. For this reason, a voltage drop occurs in the power line connecting the external power supply and the emergency lighting fixture. This voltage drop increases as the distance between the external power source and the lighting circuit of the emergency lighting fixture increases. In this case, although the output voltage at the output terminal of the external power supply is a normal voltage value, the input voltage at the input terminal of the lighting circuit is lower than the output voltage of the standby power supply, so the light amount of the light source is reduced, Necessary illuminance may not be obtained on the surface irradiated with light from.

  The present invention has been made in view of the above points, and an object of the present invention is related to the power supplied to the lighting circuit from the external power supply, even in the case of a separate power supply type in which power is supplied from the external power supply. It is an object of the present invention to provide a lighting apparatus that can easily notify that an electrical variable is small.

  A lighting fixture according to one embodiment of the present invention includes a light source, a main body, a lighting circuit, a determination unit, and a notification unit. The lighting circuit is accommodated in the main body, and is supplied with electric power from an external power source provided outside the main body to light the light source. The determination unit determines whether or not an electrical variable related to the power supplied from the external power source to the lighting circuit is within a reference range. The notification unit notifies the determination result of the determination unit when the determination unit determines that the electrical variable is not within the reference range.

  According to the luminaire according to the above aspect of the present invention, even in the case of a separate power supply type in which power is supplied from an external power source, the electrical variables related to the power supplied from the external power source to the lighting circuit are not within the reference range. Can be easily informed.

FIG. 1 is a circuit diagram of a lighting fixture according to an embodiment of the present invention. FIG. 2 is a perspective view of the luminaire described above. FIG. 3 is a schematic view showing a use state of the above-described lighting fixture.

  Hereinafter, the lighting fixture according to the embodiment will be described with reference to the drawings.

  1 to 3 described in the following embodiments and the like are schematic views, and the ratio of the size and thickness of each component in the drawing does not necessarily reflect the actual dimensional ratio. Not exclusively.

(Embodiment)
(1) Whole structure of lighting fixture First, the whole structure of the lighting fixture 1 which concerns on this embodiment is demonstrated with reference to FIGS. 1-3.

  As shown in FIG. 1, the lighting fixture 1 includes a light source block 2, a lighting device 3, and an input terminal portion 4. As shown in FIG. 2, the lighting fixture 1 includes a main body 51, a cover 52, and a plurality of (two in FIG. 2) support tools 53.

  The lighting fixture 1 which concerns on this embodiment is a power supply separate type lighting fixture with which electric power is supplied from the external power supply 6, as shown in FIG. The luminaire 1 is installed in a building 8 such as a high-rise building or a large commercial facility. The luminaire 1 is installed on a ceiling material 81 such as a passage or a hallway in the building 8, for example. The lighting fixture 1 is an emergency light (emergency lighting fixture) that turns on an LED (Light Emitting Diode) 21 (light source) of the light source block 2 in an emergency. Furthermore, as shown in FIG. 2, the luminaire 1 is installed in the ceiling material 81 so that a part thereof is embedded in the back side of the ceiling material 81 through an embedding hole formed in the ceiling material 81 in the building 8. This is an embedded lighting fixture.

  As shown in FIG. 1, the light source block 2 includes an LED 21 as a light source, and the lighting device 3 includes a lighting circuit 31, a control circuit 34, and a monitor lamp 35 (notification unit). The lighting circuit 31 is housed in a main body 51 (see FIG. 2) described later, and power is supplied from an external power source 6 provided outside the main body 51 to light the LED 21.

  In such a luminaire 1, when the voltage drop due to the power line 7 occurs beyond the voltage conversion capability of the lighting circuit 31, the light amount of the LED 21 decreases, and thus the surface irradiated with the light from the LED 21 (for example, the floor surface). The illuminance is low.

  Therefore, in the lighting fixture 1, the control circuit 34 includes the determination unit 36, and the determination unit 36 determines whether or not the electrical variable related to the power supplied from the external power supply 6 to the lighting circuit 31 is within the reference range. . When the determination unit 36 determines that the electrical variable is not within the reference range, the monitor lamp 35 notifies the determination result of the determination unit 36.

(2) External Power Supply The external power supply 6 shown in FIG. 3 is provided outside the main body 51 (see FIG. 2) of the lighting fixture 1, and is a power supply different from the commercial power supply. That is, the external power source 6 is disposed separately from the lighting fixture 1. The external power source 6 is electrically connected to the luminaire 1 through the power line 7.

  The external power supply 6 includes a storage battery composed of a plurality of cells. That is, the external power source 6 is a DC power source that outputs a DC voltage. The plurality of cells are connected in series with each other. The storage battery is a secondary battery such as a nickel metal hydride battery, a lithium ion battery, or a nickel cadmium battery. The external power source 6 is provided in the main body 51 of the lighting fixture 1 and is electrically connected to the plurality of lighting fixtures 1. The external power source 6 has a capacity capable of supplying power to the plurality of lighting fixtures 1.

(3) Each component of lighting fixture Next, each component of the lighting fixture 1 which concerns on this embodiment is demonstrated with reference to drawings.

(3.1) Light Source Block The light source block 2 shown in FIG. 2 includes an LED 21 and a lens 22. The LED 21 is, for example, a package-type white LED for illumination. The lens 22 is made of, for example, glass and has an incident surface having a paraboloid shape. The lens 22 is configured to control the light distribution of light incident on the incident surface (light emitted from the LED 21).

(3.2) Main Body As shown in FIG. 2, the main body 51 has a bottomed cylindrical shape with an open lower surface, and houses the lighting device 3 (see FIG. 1). The main body 51 is formed by punching and bending a single sheet metal such as a galvanized steel plate or a stainless steel plate. The main body 51 has a rectangular window 511. The window 511 is formed in the upper part of the main body 51. And the terminal block 54 which comprises the input terminal part 4 (refer FIG. 1) is exposed through the window 511 in the state accommodated in the main body 51. FIG.

  The main body 51 has a polygonal bottom plate (not shown) and two side plates 55. Each side plate 55 is connected to the bottom plate and constitutes a side portion of the main body 51. Each side plate 55 includes five rectangular pieces (first piece 551, second piece 552, third piece 553, fourth piece (not shown), and fifth piece (not shown)) that are long in the vertical direction. Have. In other words, the main body 51 has two first pieces 551, second pieces 552, third pieces 553, fourth pieces, and fifth pieces. In each side plate 55, the first piece 551, the second piece 552, the third piece 553, the fourth piece, and the fifth piece are integrally formed.

(3.3) Cover The cover 52 has a disk shape larger than the outer diameter of the main body 51 (the outer diameter of the leading edges of the plurality of flange pieces). A circular window hole 521 is formed in the center of the cover 52. The lens 22 of the light source block 2 passes through the window hole 521. The cover 52 is configured to close the opening on the front surface of the main body 51 so as to be openable.

(3.4) Support Tools The plurality of support tools 53 are attached to the first pieces 551 of the two side plates 55 of the main body 51 one by one. Each support tool 53 is formed in a long leaf spring shape. Each support 53 is fixed to the first piece 551 of the main body 51 at one end in the longitudinal direction, and is configured to be able to bend in a direction (upward) in which the other end in the longitudinal direction approaches the bottom plate of the main body 51. ing. The plurality of support tools 53 are positioned above the ceiling material 81 through the embedding holes of the ceiling material 81, thereby providing a plurality of support tools 53 and a plurality of flange pieces provided on the lower end surface of the main body 51. The lighting fixture 1 is supported by the ceiling material 81 so as to sandwich the ceiling material 81 therebetween.

(3.5) Input Terminal Unit The input terminal unit 4 shown in FIG. 1 is electrically connected to the external power source 6 through the power line 7 in a state where the lighting device 3 is accommodated in the main body 51.

(3.6) Lighting Device The lighting device 3 is configured to light the LED 21 of the light source block 2 as shown in FIG. The lighting device 3 includes a lighting circuit 31, a current measurement unit 32, a storage unit 33, a control circuit 34, and a monitor lamp 35 (notification unit).

  The lighting circuit 31 is configured to turn on the LEDs 21 of the light source block 2 when power is supplied from the external power source 6. More specifically, the lighting circuit 31 is configured to convert the direct current supplied from the external power supply 6 into a constant current and supply it to the LED 21 in accordance with an instruction from a lighting control unit 37 described later. The lighting circuit 31 is accommodated in the main body 51.

  Since the lighting fixture 1 according to the present embodiment is an emergency light, the lighting circuit 31 is supplied with electric power from the external power source 6 in the event of an emergency and lights the LED 21. In other words, the lighting circuit 31 is supplied with electric power from the external power source 6 to light the LED 21 when an emergency lighting instruction is given to the lighting apparatus 1 from the outside. Here, the emergency is, for example, a power failure of a commercial power supply.

  The current measuring unit 32 is provided to measure the output current I1 of the lighting circuit 31. That is, the current measuring unit 32 is provided for measuring the current supplied to the LED 21 of the light source block 2. For example, the current measuring unit 32 includes a resistor connected in series with the LED 21 between the output ends of the lighting circuit 31. When measuring the output current I1 of the lighting circuit 31, the current measuring unit 32 outputs the voltage across the resistor to the control circuit 34 as the output current I1. That is, the voltage across the resistor is output to the control circuit 34 as information indicating the magnitude of the output current I1.

  The storage unit 33 is, for example, a semiconductor memory, and stores a reference range for comparing electrical variables related to power supplied from the external power supply 6 to the lighting circuit 31. In the present embodiment, the storage unit 33 stores a reference range (reference current range) corresponding to the output current I1 of the LED 21 in advance. The storage unit 33 stores the reference range before determination by the determination unit 36 described later. For example, when the lighting apparatus 1 is manufactured, the storage unit 33 stores the reference range.

  The reference range is, for example, a range of the output current I1 such that the light amount of the LED 21 that is a light source becomes a necessary light amount. In particular, when the luminaire 1 is an emergency light (emergency luminaire) or a disaster illuminator such as a guide light, the illuminance of the surface irradiated with the light from the LED 21 is determined by law or the like. The reference range is a range including the rated current of the LED 21.

  The control circuit 34 includes a determination unit 36 and a lighting control unit 37. The control circuit 34 includes a computer (including a microcomputer) on which a processor and a memory are mounted as a main component. The computer functions as the control circuit 34 by executing an appropriate program.

  The lighting control unit 37 controls the lighting circuit 31 to supply power to the LED 21 from the external power supply 6 in an emergency. More specifically, the lighting control unit 37 operates the lighting circuit 31 because electric power is supplied from the external power source 6 to the lighting fixture 1 during a power failure. On the other hand, when it is not a power failure, the lighting control unit 37 does not operate because power is not supplied to the lighting fixture 1.

  The determination unit 36 is configured to determine whether or not an electrical variable related to power supplied from the external power source 6 to the lighting circuit 31 is within a reference range. The electrical variable of the present embodiment is an output current I1 output from the lighting circuit 31 to the LED 21 of the light source block 2. The determination unit 36 of the present embodiment determines whether or not the output current I1 measured by the current measurement unit 32 is equal to or greater than the lower limit value of the reference range (reference current range). The lower limit value of the reference range is, for example, 90% of the rated current.

  More specifically, the determination unit 36 acquires information on the output current I1 of the lighting circuit 31 from the current measurement unit 32. Further, the determination unit 36 acquires the reference range from the storage unit 33. Then, the determination unit 36 determines whether or not the output current I1 of the lighting circuit 31 is within the reference range. When the output current I1 is within the reference range, the determination unit 36 determines that the light amount of the LED 21 is appropriate. On the other hand, when the output current I1 is not within the reference range, the determination unit 36 determines that the voltage from the external power source 6 is not sufficient and the light amount of the LED 21 is small.

  When the determination unit 36 determines that the electrical variable is within the reference range, that is, when the determination unit 36 determines that the output current I1 is within the reference range, the lighting circuit 31 sets the LED 21 to the brightness of the rated current. Turn on with.

  By the way, in this embodiment, the determination part 36 determines whether an electrical variable is in a reference | standard range, for example, when operation for the electric power feeding from the external power supply 6 to the lighting fixture 1 is performed. More specifically, after the lighting apparatus 1 is electrically connected to the external power source 6, the determination unit 36 performs an electrical operation when an operation for supplying power from the external power source 6 to the lighting apparatus 1 is first performed. It is determined whether the target variable is within the reference range. For example, at the time of construction where the lighting fixture 1 is attached to the ceiling material 81 (see FIG. 3), after the lighting fixture 1 is electrically connected to the external power source 6, power supply from the external power source 6 to the lighting fixture 1 is performed. The above determination is made when the operation is first performed. That is, the above determination is performed in the inspection at the time of construction.

  Here, the operation for supplying power from the external power source 6 to the lighting apparatus 1 is, for example, an operation on an inspection switch (not shown) operated when checking whether the LED 21 is normally lit. . The inspection switch is provided in, for example, the external power source 6 or a control device (not shown) that controls the external power source 6.

  The determination by the determination unit 36 is not limited to when an operation for supplying power from the external power source 6 to the lighting apparatus 1 is performed, and may be performed at other timing. In the case where the lighting fixture 1 is an emergency lighting fixture, the above determination may be made during periodic inspection. The periodic inspection is to turn on the LED 21 as a light source by supplying power from the external power source 6 in the lighting fixture 1. The periodic inspection is performed at regular intervals such as 6 months.

  The monitor lamp 35 notifies the determination result of the determination unit 36 when the determination unit 36 determines that the electrical variable is not within the reference range. That is, the monitor lamp 35 notifies that the light quantity of the LED 21 is small when the determination unit 36 determines that the electrical variable is not within the reference range. More specifically, when the electrical variable is not within the reference range, the monitor lamp 35 is lit in a lighting state different from the normal state. As a lighting state different from the normal state, the monitor lamp 35 blinks, for example. The monitor lamp 35 is, for example, a light emitting diode that emits green light, and is provided in the main body 51 (see FIG. 2) so that at least the light emission surface is exposed.

  By the way, it is preferable to use an electrical variable that satisfies the condition that the electrical variable increases as the power supplied from the external power supply 6 to the lighting circuit 31 increases, like the output current I1 described above. In this case, the determination unit 36 determines whether or not the electrical variable is greater than or equal to the lower limit value of the reference range. And the monitor lamp 35 alert | reports the determination result of the determination part 36, when the determination part 36 determines that an electrical variable is less than the lower limit of a reference | standard range.

(4) Operation | movement of lighting fixture Next, operation | movement of the lighting fixture 1 which concerns on this embodiment is demonstrated with reference to FIG. The storage unit 33 of the lighting device 3 stores a reference range in advance.

  After the lighting fixture 1 is attached to the ceiling member 81 (see FIG. 2), when the operator presses an inspection switch provided on the external power source 6 side, power is supplied from the external power source 6 to the lighting fixture 1. The control circuit 34 is activated by the power supply from the external power source 6, and the determination unit 36 of the control circuit 34 measures the output current I 1 of the lighting circuit 31 using the voltage across the resistance of the current measurement unit 32. Then, the determination unit 36 determines whether or not the output current I1 of the lighting circuit 31 is within the reference range stored in the storage unit 33.

  When the determination unit 36 determines that the output current I1 is within the reference range, the lighting control unit 37 of the control circuit 34 controls the monitor lamp 35 so as to notify the state where the light amount of the LED 21 is sufficient (normal state). To do. The monitor lamp 35 is lit in a lighting state representing a normal state in accordance with an instruction from the lighting control unit 37.

  When the determination unit 36 determines that the output current I1 is within the reference range, the lighting control unit 37 instructs the lighting circuit 31 to turn on. Specifically, the lighting control unit 37 controls the lighting circuit 31 so that the LED 21 is lit at the rated value. The lighting circuit 31 supplies an output current I1 to the LED 21 in accordance with a lighting instruction from the lighting control unit 37. The LED 21 is lit at a rating according to an instruction from the lighting circuit 31.

  On the other hand, when the determination unit 36 determines that the output current I1 from the lighting circuit 31 is not within the reference range, the lighting control unit 37 notifies the state (abnormal state) in which the light amount of the LED 21 is insufficient. 35 is controlled. The monitor lamp 35 is lit in a lighting state representing an abnormal state in accordance with an instruction from the lighting control unit 37.

  With the above operation, even if the output voltage of the external power supply 6 is the rated voltage, it can be notified that the light quantity of the LED 21 is insufficient due to the voltage drop in the power line 7.

  For example, the case where the some lighting fixture 1 is connected in the building 8 is demonstrated with reference to FIG. The external power supply 6 is provided in the basement of the building 8, for example. Among the plurality of lighting fixtures 1, the lighting fixture 1 close to the external power source 6 is referred to as a first lighting fixture 1a, and the lighting fixture 1 far from the external power source 6 is referred to as a second lighting fixture 1b.

  When the external power source 6 is turned on, power is supplied from the external power source 6 to each lighting fixture 1. Here, the second distance D2 between the second lighting fixture 1b far from the external power supply 6 and the external power supply 6 is greater than the first distance D1 between the first lighting fixture 1a close to the external power supply 6 and the external power supply 6. Also long. For this reason, in the 2nd lighting fixture 1b, it exists in the tendency for the voltage drop by the power line 7 to become larger than the 1st lighting fixture 1a.

  In this case, even if the voltage value of the output voltage of the external power source 6 is a normal value, the lighting circuit 31 of the lighting device 1 is caused by a voltage drop due to the power line 7 as the distance between the lighting device 1 and the external power source 6 increases. The input voltage V1 (see FIG. 1) of (see FIG. 1) becomes low. For this reason, in the 2nd lighting fixture 1b far from the external power supply 6, the input voltage V1 of the lighting circuit 31 may become low exceeding the voltage conversion capability of the lighting circuit 31. When a voltage drop occurs exceeding the voltage conversion capability of the lighting circuit 31, it becomes difficult to flow an appropriate output current I1 from the lighting circuit 31 to the LED 21. As a result, the output current I1 of the lighting circuit 31 becomes smaller than the rated current, and the light quantity of the LED 21 decreases.

  When the amount of light of the LED 21 is small, a necessary illuminance cannot be obtained on the surface irradiated with the light from the LED 21, and the lighting fixture 1 cannot exhibit the required function, so that it is necessary to take measures. For this reason, in the lighting fixture 1, when the output current I1 of the lighting circuit 31 is less than the lower limit value of the reference range, the monitor lamp 35 notifies that the light amount of the LED 21 is small. As the above measures, for example, the diameter of the power line 7 is increased to increase the cross-sectional area of the power line 7, the length of the power line 7 is shortened, the external power supply 6 is replaced, or the number of external power supplies 6 is increased. Or increase.

(5) Modifications Hereinafter, modifications of the present embodiment will be described.

  In the lighting fixture 1, the electrical variable used for the determination by the determination unit 36 of the lighting device 3 is not limited to the output current I1 of the lighting circuit 31. The electrical variable may be the input voltage V1 of the lighting circuit 31, or may be both the output current I1 of the lighting circuit 31 and the input voltage V1 of the lighting circuit 31. In short, the electrical variable may be at least one of the input voltage V1 of the lighting circuit 31 and the output current I1 of the lighting circuit 31.

  When the electrical variable is the input voltage V1 of the lighting circuit 31, the lighting device 3 includes a voltage measurement unit for measuring the input voltage V1. The voltage measurement unit includes, for example, two resistors connected between the input ends of the lighting circuit 31. The two resistors are connected in series. When measuring the input voltage V1 of the lighting circuit 31, the voltage measuring unit outputs the voltage across either of the two resistors to the control circuit 34 as the input voltage V1. That is, the voltage across either of the two resistors is output to the control circuit 34 as information indicating the magnitude of the input voltage V1. The determination unit 36 of the control circuit 34 determines whether or not the input voltage V1 measured by the voltage measurement unit is greater than or equal to the lower limit value of the reference range (reference voltage range). The lower limit value of the reference range is, for example, 90% of the rated voltage.

  The notification unit that notifies the determination result of the determination unit 36 when the determination unit 36 determines that the electrical variable is not within the reference range is not limited to the monitor lamp 35. In other words, the notification unit only needs to have a function of notifying the determination result of the determination unit 36 when the determination unit 36 determines that the electrical variable is not within the reference range.

  For example, the notification unit may also be used as the LED 21 (light source) of the light source block 2. The lighting circuit 31 lights the LED 21 in a predetermined lighting state when the determination unit 36 determines that the electrical variable is not within the reference range. As the lighting state, the LED 21 blinks, for example.

  Alternatively, the notification unit may be a separate display unit from the monitor lamp 35 and the LED 21 (light source).

  Moreover, the said alerting | reporting part is not limited to the above display parts. The notification unit may be a sound output unit that outputs sound or sound, such as a speaker.

  Furthermore, the notification unit may be a communication unit that outputs the determination result of the determination unit 36 to the outside through communication. For example, the communication unit outputs the determination result of the determination unit 36 to the outside using a signal line different from the power line 7. Alternatively, the communication unit may output the determination result of the determination unit 36 to the outside by power line communication (PLC) using the power line 7. Alternatively, the communication unit may output the determination result of the determination unit 36 to the outside by wireless communication.

  The external power source 6 is not limited to a DC power source that outputs a DC voltage, and may be an AC power source that outputs an AC voltage. When the external power supply 6 is an AC power supply, the lighting circuit 31 may include a voltage conversion circuit that converts an AC voltage into a DC voltage.

  The luminaire 1 is not limited to an embedded emergency light, and may be a directly attached emergency light that is directly attached to the ceiling material 81.

  Moreover, the lighting fixture 1 may not be an emergency light, but may be a guide light for guiding a person in an emergency. In short, the lighting fixture 1 may be a lighting fixture for disaster prevention.

  Also in the lighting fixture 1 which concerns on said each modification, there exists an effect similar to the lighting fixture 1 which concerns on this embodiment.

  The embodiments and modifications described above are only a part of the various embodiments and modifications of the present invention. In addition, the embodiment and the modification can be variously changed according to the design or the like as long as the object of the present invention can be achieved.

(6) Effects The lighting fixture (1) according to the first aspect includes a light source (LED 21), a main body (51), a lighting circuit (31), a determination unit (36), and a notification unit (monitor lamp 35; LED 21). The lighting circuit (31) is housed in the main body (51), and is supplied with electric power from an external power source (6) provided outside the main body (51) to light the light source. The determination unit (36) determines whether or not the electrical variable (output current I1; input voltage V1) related to the power supplied from the external power supply (6) to the lighting circuit (31) is within the reference range. When the determination unit (36) determines that the electrical variable is not within the reference range, the notification unit notifies the determination result of the determination unit (36).

  In the lighting fixture (1) according to the first aspect, if the electrical variable (output current I1; input voltage V1) related to the power supplied from the external power source (6) to the lighting circuit (31) is not within the reference range, the determination is made. The determination result of the unit (36) can be notified. Thereby, even in the case of a separate power supply type in which power is supplied from the external power supply (6), the electrical variable related to the power supplied from the external power supply (6) to the lighting circuit (31) is not within the reference range. Can be informed. As a result, even when the power supply is separately installed, it can be notified that the light amount of the light source (LED 21) is not sufficient.

  In the lighting fixture (1) according to the second aspect, in the first aspect, the electrical variable is an output current (I1) output from the lighting circuit (31) to the light source (LED 21).

  According to the lighting fixture (1) which concerns on a 2nd aspect, the light quantity of a light source is not enough by making determination using the output current (I1) output to a light source (LED21) from a lighting circuit (31). Can be informed accurately.

  In the lighting device (1) according to the third aspect, in the first or second aspect, the notification unit notifies whether or not power is supplied from the external power source (6) to the lighting circuit (31). (35).

  According to the lighting fixture (1) which concerns on a 3rd aspect, it can alert | report that the light quantity of a light source is not enough by the alerting | reporting part (monitor lamp 35) separate from a light source (LED21).

  In the lighting fixture (1) according to the fourth aspect, in the first or second aspect, the notification unit also serves as the light source (LED 21). The lighting circuit (31) lights the light source in a predetermined lighting state when the determination unit (36) determines that the electrical variable (output current I1; input voltage V1) is not within the reference range.

  According to the lighting fixture (1) which concerns on a 4th aspect, since it is not necessary to add another member as an alerting | reporting part, compared with the case where an alerting | reporting part is provided separately from a light source (LED21), reducing a number of parts. Can do.

  In the lighting fixture (1) according to the fifth aspect, in any one of the first to fourth aspects, the lighting circuit (31) is provided with an emergency lighting instruction from the outside to the lighting fixture. In addition, power is supplied from the external power source to light the light source (LED 21).

1 lighting fixture 21 LED (light source, notification unit)
31 lighting circuit 35 monitor lamp (notification part)
36 Determination Unit 51 Body 6 External Power Supply I1 Output Current (Electric Variable)
V1 input voltage (electrical variable)

Claims (5)

A light source;
The body,
A lighting circuit that is housed in the main body and is supplied with electric power from an external power source provided outside the main body to turn on the light source;
A determination unit that determines whether or not an electrical variable related to the power supplied from the external power source to the lighting circuit is within a reference range;
A notification unit that notifies the determination result of the determination unit when the determination unit determines that the electrical variable is not within the reference range;
lighting equipment. The electrical variable is an output current output from the lighting circuit to the light source.
The lighting fixture according to claim 1. The notification unit is a monitor lamp that notifies whether or not the power is being supplied from the external power source to the lighting circuit.
The lighting fixture according to claim 1 or 2. The notification unit also serves as the light source,
The lighting circuit turns on the light source in a predetermined lighting state when the determination unit determines that the electrical variable is not within the reference range,
The lighting fixture according to claim 1 or 2. The lighting circuit turns on the light source when power is supplied from the external power source when an emergency lighting instruction is given to the lighting fixture from the outside.
The lighting fixture of any one of Claims 1-4.

Images