JP6607274B2 - lighting equipment - Google Patents

Description

  The present invention relates to a lighting fixture.

  Conventionally, as disclosed in, for example, Japanese Patent No. 5319933, there is known an illuminating device that supplies lighting power to a light source module by an emergency power source during a power failure.

Japanese Patent No. 5319933

In conventional emergency lighting fixtures, the lifetime of the light source is not determined by self-inspection, but is determined only by the accumulated lighting time, so there is a problem that replacement at the end of the lifetime is not actively performed. .

The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a lighting apparatus suitable for inspecting a light source module having a light emitting element such as an LED.

A lighting fixture according to the present invention includes a light source module including a light emitting element, a storage battery, an emergency lighting circuit that turns on the light source module with the storage battery by performing constant power control, an inspection lamp, and the light source module. Characteristic detection means for detecting characteristics, and inspection means for checking the lighting time when the light source module is turned on by the emergency lighting circuit by the storage battery, and based on the inspection instruction, the emergency lighting circuit It is possible to operate in an inspection mode in which the light source module is turned on and an emergency mode in which the light source module is turned on by the emergency lighting circuit in the event of a power failure. The current flowing in the light source module is controlled, and the characteristic detected by the characteristic detection means during the constant power control is performed. The inspection lamp is lit in at least one of the case where the rated value exceeds the rated value and the lighting time detected by the inspection means does not satisfy a predetermined condition. In the emergency mode, the rating is The light source module is turned on even with an output current exceeding the current.

According to the luminaire according to the present invention , the light source module is obtained by combining the constant power control and the inspection function.
Judgment of life due to a short circuit fault of Joule can be performed .

It is a table | surface for demonstrating the several light source module applied in the lighting fixture concerning Embodiment 1 of this invention. It is a block diagram which shows the lighting fixture concerning Embodiment 1 of this invention. It is a block diagram which shows the lighting fixture concerning Embodiment 2 of this invention.

  FIG. 1 is a table for explaining a plurality of light source modules 5a to 5d applied in the lighting fixture 20 according to the first embodiment of the present invention. FIG. 2 is a block diagram showing the lighting fixture 20. In the table shown in FIG. 1, light source modules 5a to 5d having different brightness are listed. Each of the light source modules 5a to 5d is an LED module having the same external shape, in which one or a plurality of LED elements are connected in series, in parallel or in series, and the specifications of the LED elements, the number of LED elements, and the LED elements The electrical connection forms are different from each other. The lighting fixture 20 is a so-called lamp-free lighting fixture, and the light source modules 5 a to 5 d shown in FIG. 1 can be arbitrarily selected and connected to the lighting fixture 20 as the light source module 5.

  As shown in FIG. 2, the luminaire 20 includes a service lighting circuit 3 connected to the commercial AC power supply 1, and a light source module 5 connected to the service lighting circuit 3 via the switching means 4. The luminaire 20 includes an emergency lighting circuit 8 that is activated at the time of a power failure of the commercial AC power supply 1 and is typically a boost converter, and a storage battery 7 that supplies power to the emergency lighting circuit 8. The storage battery 7 is charged by the charging converter circuit 6, and the charging converter circuit 6 is typically a flyback converter circuit. The charging converter circuit 6 is fed back with an output voltage signal for constant voltage control taken out between the charging converter circuit 6 and the storage battery 7 and used for constant current control taken out between the storage battery 7 and the resistor 11. Each output current signal is input. Thereby, the charging current value of the storage battery 7 can be fed back to the control content of the charging converter circuit 6.

  The switching means 4 includes relays 4a and 4b. In the switching means 4, when the commercial AC power supply 1 is normally supplied, the relays 4 a and 4 b are “normally connected”. In this normal connection, the regular lighting circuit 3 and the light source module 5 are connected, and the emergency lighting circuit 8 is not connected to the light source module 5. During normal connection, the utility lighting circuit 3 generates power to be supplied to the light source module 5 by being supplied with power from the commercial AC power supply 1. On the other hand, when a power failure signal indicating that the power failure detection circuit 10 has detected a power failure is transmitted to the switching means 4, it is determined that the commercial AC power source 1 is out of power and the relays 4a and 4b are switched to "Emergency connection". . In this emergency connection, the regular lighting circuit 3 is disconnected from the light source module 5 and the light source module 5 and the emergency lighting circuit 8 are connected.

  The control circuit (CPU) 30 is connected to the charging converter circuit 6, the emergency lighting circuit 8, and the inspection lamp 31, and controls them. The control circuit 30 includes a microcomputer that operates with a control power supply or the voltage of the storage battery 7. The control circuit 30 controls the emergency lighting circuit 8 and outputs and displays a status signal indicating the charged state of the storage battery 7 and the state of the light source module 5 (such as LED failure) on the inspection lamp 31.

(Constant power control of emergency lighting circuit)
As shown in the table of FIG. 1, the light source modules 5a to 5d have different output powers during normal use. The operation of the lighting fixture 20 in an emergency (more specifically, the operation of the emergency lighting circuit 8) will be described. First, the light source module 5a has an output ratio of 0.25, that is, an output of 25% in normal use. The emergency output power in the emergency lighting circuit 8 is set to 7.75 W. Further, also for the light source modules 5b to 5d, the emergency lighting circuit 8 supplies the output power of 7.75 W in the same manner as the light source module 5a. As described above, one of the technical features of the present embodiment is that the control to make the output power the same, that is, the constant power control is performed. Thereby, even if any of the plurality of light source modules 5a to 5d having different brightnesses is connected, each light source module can be turned on so that the lighting fixture 20 can secure the same brightness in an emergency. it can.

  The emergency lighting circuit 8 can typically be a boost chopper circuit including a choke coil, a switching element connected to the choke coil, and a control IC that drives the switching element. The voltage of the storage battery 7 is boosted and output by turning on / off the switching element. Regardless of which of the light source modules 5a to 5d is connected, constant power control is performed so that the output power Pout of the emergency lighting circuit 8 matches the target value (ie, 7.75 W in the present embodiment). The emergency lighting circuit 8 includes voltage detection means for detecting a voltage applied to the light source module 5. As this voltage detection means, a voltage dividing circuit connected in parallel to both terminals of the light source module 5 can be typically used. Since this type of technology is well known, description and illustration thereof are omitted. As a specific form of the constant power control, the control IC provided in the emergency lighting circuit 8 has a table in which the correspondence between the output voltage Vout and the output current Iout is set in the memory so that the output power Pout becomes constant or The calculation formula is stored, and the target output current is determined according to the voltage detected by the voltage detection means according to this table or calculation formula.

  In the table shown in FIG. 1, the calculation is made assuming that the emergency lighting circuit 8 is a 25% output model. On the other hand, when the emergency lighting circuit 8 is a 50% output model, the output ratio of the light source module 5a is 0.5, and an output power of 15.5 W is given to the light source module 5a in an emergency. In that case, the current of the light source module with low power consumption such as the light source module 5d exceeds the rated value (specifically 350 mA). Therefore, in preparation for such a case, it is preferable to limit the current value to a rated value (specifically 350 mA) when feeding back current and voltage in power control. Thereby, protection can be performed even when a light source module with low power consumption is connected to a 50% output model.

(Confirmation of light source module and storage battery)
Each of the normal lighting circuit 3 and the emergency lighting circuit 8 includes current detection means for detecting the current IL flowing through the light source module 5. This current detection means can be typically an LED current detection resistor connected in series with the light source module 5, and since this type of technology is well known, description and illustration thereof are omitted. The control circuit 30 includes an inspection means for performing “self-inspection” for inspecting the lighting time T of the storage battery 7. As the technology relating to this self-inspection, a known technology such as a guide light may be used, and detailed description thereof will be omitted. The control circuit 30 acquires the current IL detected by the current detection means of the emergency lighting circuit 8 during the constant power control and the lighting time T detected by self-inspection. The control circuit 30 lights the inspection lamp 31 when at least one of the current IL and the lighting time T does not satisfy a predetermined condition. For example, when the current IL exceeds the rated value, the inspection lamp 31 is turned on. In addition, as a result of self-inspection, it is determined whether the standard set for the emergency light can be satisfied in the current state of the storage battery 7, and if the standard cannot be satisfied, the inspection lamp 31 can notify the user. it can.

(Storage battery specifications and replacement)
It is preferable to connect the storage battery 7 which can be used for the light source module 5a of the maximum output among the light source modules 5a-5d to the lighting fixture 20. Moreover, it is preferable that the lighting fixture 20 replaces the storage battery 7 and the light source module 5 together, and the replacement time is preferably, for example, when the inspection lamp 31 is notified by the self-inspection. This is because the necessary charge capacity varies depending on which of the light source modules 5a to 5d is connected, and therefore it is necessary to select the storage battery 7 appropriately.

(Release current limit in emergency mode)
The lighting fixture 20 can operate in an emergency mode and an inspection mode. The emergency mode is a mode in which the light source module 5 is turned on by the emergency lighting circuit 8 at the time of a power failure detected by the power failure detection circuit 10, and the inspection mode is based on an inspection instruction input by input means such as an inspection button (not shown). In this mode, the light source module 5 is turned on by the emergency lighting circuit 8. The control circuit 30 may discriminate between the inspection mode and the emergency mode based on the presence / absence of the inspection instruction, and may turn on the light source module 5 with an output current exceeding the rated current value (specifically, 350 mA) only in the emergency mode. . This is because the LED element does not immediately fail even when a current exceeding the rated value flows.

(In-class lamp free)
In the lighting fixture 20, the following in-class lamp free may be implemented. In this, a plurality of light source modules having the same brightness are combined into one class. For example, “3500 lm class”, “2400 lm class”, “2000 lm class”, and “1500 lm class” are set. May be. Within these classes, a plurality of light source modules having different specifications for at least one of the luminous flux and the power belong. As an example, each of the light source modules belonging to the 3500 lm class has a luminous flux in the range of 3200 to 3000, all the power is 31, and lm / W is in the range of 103.2 to 96.8. In the in-class lamp free, lamp free is allowed only in the same class, and only one light source module of the same class is connected to one lighting fixture 20. For example, the light source modules belonging to the same class may be assigned the same class display mark so that the user can determine the class to which each light source module belongs. In the in-class lamp-free, the luminaire 20 performs constant current control in accordance with the light source module with the lowest light output in each class so that a sufficient current is supplied to all the light source modules in the class.

  In-class lamp free, when the connected light source module 5 does not belong to the specified class (specifically, when it belongs to a class above the specified class or at least one of the classes below the specified class) The emergency lighting circuit 8 performs constant power control. The constant power control may be performed using a table or a mathematical expression as described above. Whether or not the light source module 5 belongs to the specified class is determined by detecting the output voltage Vout and the output current Iout when the light source module 5 is lit by the emergency lighting circuit 8 and power consumption obtained from the detected value. May be determined based on whether or not is within a predetermined range. This predetermined range may be stored in advance in the control IC of the emergency lighting circuit 8 or the memory of the control circuit 30. As described above, the emergency lighting circuit 8 performs constant current control assuming that the in-class lamp-free operation can be performed if the detected power consumption is within the predetermined range, and performs constant power control when the detected power consumption is out of the predetermined range. You may make it implement.

Embodiment 2. FIG.
FIG. 3 is a block diagram showing a lighting fixture 120 according to the second embodiment of the present invention, in which a DIP switch 32 is added to the lighting fixture 20. The control circuit 30 is connected to the DIP switch 32 and includes a process for determining the type of the light source module 5, that is, one of the light source modules 5 a to 5 d in accordance with the state of the DIP switch 32. The lighting fixture 120 does not perform the constant power control performed by the lighting fixture 20 of the first embodiment. Instead, the lighting fixture 120 performs constant current control with the control content preset for the light source module 5 designated by the DIP switch 32. Thereby, even when performing the so-called re-layout (changing the layout to a different arrangement) while diverting the existing lighting fixture 120, it is manually set so that appropriate brightness can be obtained for each light source module 5 Changes can be made.

  The control circuit 30 determines which of the light source modules 5 a to 5 d is the light source module 5 based on the operation state of the DIP switch 32. Information (specifically, a table) defining the relationship between the operation state of the DIP switch 32 and the type of the light source module is stored in advance in a memory in the control circuit 30. The constant current control is performed so that a specified output (for example, 25% output or 50% output) is obtained for each normal use of the light source modules 5a to 5d specified by the DIP switch 32. Instead of the DIP switch 32, a slide switch, a push lock switch, a rotary switch, or the like may be used, and any switch that can switch between a plurality of states is not particularly limited.

DESCRIPTION OF SYMBOLS 1 Commercial AC power source, 3 Common lighting circuit, 4 Switching means, 4a, 4b Relay, 5, 5a-5d Light source module, 6 Charging converter circuit, 7 Storage battery, 8 Emergency lighting circuit, 10 Power failure detection circuit, 11 Resistance, 20, 120 Lighting equipment, 30 Control circuit, 31 Inspection lamp, 32 DIP switch

Claims (2)

A light source module comprising a light emission element,
A storage battery,
An emergency lighting circuit for lighting the light source module by the storage battery by performing constant power control;
An inspection lamp,
Characteristic detecting means for detecting the characteristic of the light source module;
Inspection means for checking the lighting time when the light source module is lit by the emergency lighting circuit by the storage battery,
With
It is operable in an inspection mode in which the light source module is turned on by the emergency lighting circuit based on an inspection instruction, and an emergency mode in which the light source module is turned on by the emergency lighting circuit in the event of a power failure,
In the inspection mode, the current flowing through the light source module is controlled within a range not exceeding the rated current, and the characteristic detected by the characteristic detection means during the constant power control is exceeding a rated value and Lighting the inspection lamp in at least one of the cases where the lighting time detected by the inspection means does not satisfy a predetermined condition;
In the emergency mode, a lighting fixture that lights the light source module even with an output current exceeding the rated current. The lighting apparatus according to claim 1 , wherein the characteristic of the light source module detected by the characteristic detection unit includes an electric characteristic related to lighting of the light source module.

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