Power supplies for lighting, lighting devices, and lighting systems

Abstract

To secure safety by appropriately determining abnormality in a power supply for driving a load whose number of connections can be changed.SOLUTION: A power supply for applying pulse current in which an ON period and an OFF period are repeated to a load includes: abnormality determination current value setting means for setting an abnormality determination ON current value; abnormality current value counting means for counting the number of times of an abnormal current value exceeding the abnormality determination ON current value; and abnormality determination means for determining abnormality when the number of times exceeds a constant value.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a power supply equipped with safety features, and to a lighting device and lighting system using said power supply. [Background technology]

[0002] With the shift to LED lighting, it has become easier to adjust brightness (dimming) and color temperature and hue (color tuning). Furthermore, because LEDs are smaller and easier to use than conventional light sources such as fluorescent lamps, tape lights (also called flexible lights) have come into use. One example of this is described in Patent Document 1, which mentions the advantage that "multiple tape lights (described as lighting fixtures in Patent Document 1) can be connected and extended to a desired length."

[0003] With the widespread adoption of such lighting devices, problems such as abnormal current generation have also been reported. As a countermeasure, power supplies that automatically shut off when an abnormal load is detected are now being used.

[0004] The detection of load abnormalities in a power supply is shown in Reference 2. In the power supply (described as an LED lighting device in Patent Document 2), if an abnormality in the output current parameter is repeatedly detected for a certain period of time of 1 second or more, the supply of output current is stopped. [Prior art documents] [Patent Documents]

[0005] [Patent Document 1] Patent No. 5452746 [Patent Document 2] Patent No. 6273894 [Overview of the project] [Problems that the invention aims to solve]

[0006] When driving the LED strip lights described in Patent Document 1, the power supply device that illuminates the LED strip lights has a problem in that it is difficult to determine if there is a load abnormality because the current value that drives the load differs depending on the number of LED strip lights connected.

[0007] Patent Document 2 describes a system in which an "overcurrent threshold" is set for the power supply, and a protection circuit is activated if the detected current value continuously exceeds the overcurrent threshold for a predetermined period of time or longer, indicating that an abnormality has occurred. However, in the case of LED strip lights, the drive current value differs depending on the number of LED strip lights connected, so a fixed "overcurrent threshold" cannot accommodate changes in the number of connected lights.

[0008] Furthermore, the inventors of this application analyzed the abnormal phenomenon and found that short-term abnormal phenomena can occur that do not fall under the category of "when the detected current value continuously exceeds the overcurrent threshold for a predetermined period of time or longer," meaning they are not judged as abnormal by the method of Patent Document 2.

[0009] Therefore, the present invention aims to ensure safety in a power supply that drives a load whose number of connected units may change, by appropriately detecting abnormalities. [Means for solving the problem]

[0010] This invention For lighting The power supply is The device comprises a switching unit that performs voltage conversion by switching operation, and a driver unit provided downstream of the switching unit and equipped with a dimming unit, wherein the driver unit A pulsed electric current that alternates between ON and OFF periods. pressure of output do For lighting It is a power source, The ratio of the ON period to the OFF period is output by the dimming unit. The aforementioned driver unit is An initial ON current value detection means for detecting the initial ON current value during the ON period when the pulse voltage is output to an initial light source that is presumed to be normal, The current value during the ON period is greater than the initial ON current value, and is less than the maximum rated current value of the lighting power supply. An abnormality detection current value setting means for setting an abnormality detection ON current value, The current value flowing through the light source during the ON period is An abnormal current value counting means for counting the number of times an abnormal current value exceeds the aforementioned abnormality determination ON current value, The system includes an abnormality detection means that determines an abnormality to occur if the number of occurrences exceeds a certain value.

[0011] of the present invention For lighting power supply In , The ratio of the ON period to the OFF period output by the dimming unit is controlled by an external control device. may be provided.

[0012] of the present invention For lighting in the power supply, The aforementioned when an abnormality is determined, An anomaly notification means for notifying the control device of an anomaly via wireless communication. may be provided.

[0013] of the present invention For lighting in the power supply, The driver unit is determined to be abnormal by the abnormality determination means, said pulse power pressure stop done afterward, after a predetermined period of time, said pulse power pressure to output current reapplication means for performing may be provided.

[0014] the present invention provides the above-mentioned For lighting power supply, and said For lighting connected to the power supply Light source module comprising, wherein said light source is an LED lighting device, wherein said Light source module a plurality of which are connected in series to said For lighting can be connected to the power supply Furthermore, the light source module can be separated. may be provided.

[0015] the present invention provides an LED that is light source and said light source with respect to A pulse that alternates between ON and OFF periods. power pressure to output perform For lighting power supply, and a lighting system comprising a control device in communication with said For lighting power supply, wherein said For lighting power supply is It comprises a switching unit that performs voltage conversion by switching operation, and a driver unit provided downstream of the switching unit and equipped with a dimming unit. The ratio of the ON period to the OFF period is output by the dimming unit. The aforementioned driver unit is An initial ON current value detection means for detecting the initial ON current value when the pulse voltage is output during the ON period for an initial light source that is presumed to be normal, The current value during the ON period is greater than the initial ON current value, and is less than the maximum rated current value of the lighting power supply. abnormality determination MajorAn abnormal current value setting means for setting the current value, The current value flowing through the aforementioned light source during the ON period is The above abnormality determination Major An abnormal current value counting means for counting the number of times an abnormal current value exceeds the current value, An abnormality detection method that determines an abnormality when the number of occurrences exceeds a certain value. Step Prepare. [Effects of the Invention]

[0016] With this invention, even when the current applied to the load differs due to the connection of loads or other reasons, safety can be ensured by appropriately detecting abnormalities and stopping the power supply as needed. [Brief explanation of the drawing]

[0017] [Figure 1] Configuration diagram of the lighting device of Embodiment 1 [Figure 2] Schematic circuit diagram of the light source module of Embodiment 1 [Figure 3] Power supply operation waveform diagram of Embodiment 1 [Figure 4] Enlarged schematic diagram of the power supply operation waveform in Embodiment 1 [Figure 5] Configuration diagram of the lighting device of Embodiment 2 [Figure 6] Configuration diagram of the lighting device of Embodiment 3 [Figure 7] Schematic circuit diagram of the light source module of Embodiment 3 [Figure 8] Chromatic coordinate diagram of the light source in Embodiment 3 [Modes for carrying out the invention]

[0018] <Embodiment 1> <Structure> Figure 1 shows the configuration of the lighting device 100 of this embodiment. The power supply 140 consists of a DC power supply 130 and a driver 134. Commercial power 120 is converted to a DC output by the DC power supply 130, which is input to the driver 134, and the output of the driver 134 drives the light source module 150, which is the load. The load may be just one light source module 150A, or it may be two light source modules 150A and one light source module 150B connected together. The driver 134 is controlled by the lighting control device 160.

[0019] <Power supply> Power supply 140 consists of a DC power supply 130 and a driver 134. The DC power supply 130 receives commercial power 120 of 100 or 200V, 50 or 60Hz in Japan via terminal 131 and outputs, for example, a DC24V LED drive output from output connector 138.

[0020] In Figure 1, which shows the configuration of the DC power supply 130, the rectifier / switching unit 132 performs rectification of AC power and voltage conversion through switching operation.

[0021] The driver 134 receives the output 133 from the rectifier / switching unit 132, converts it into an LED drive output, and outputs it from the output connector 138.

[0022] The dimming unit 135 controls the dimming signal sent from the control unit 137, and controls the ON period (T ON ) and OFF period (T OFF ) is dimming rate = T ON / (T ON +T OFF A waveform such as ) is produced, for example, PWM output (described later). Note that the frequency f(f=1 / (T ON +T OFF The frequency was set to 1kHz or 20kHz.

[0023] The current value of the output of the dimming unit 135 is monitored by the current detection unit 136, and this information is sent to the control unit 137. If the control unit 137 determines that the current value is abnormal, it stops the rectifier / switching unit 132 or the dimming unit 135 and stops the LED drive output according to the algorithm described later. In other words, the control unit 137 functions as a current stop means.

[0024] The driver 134 supplies a constant voltage output of DC24V to the load, which is the light source module 150. The load as seen from the DC power supply 130 can be one light source module 150A, or two light source modules 150A and one light source module 150B, etc. In other words, the number of loads is not constant, so when many loads are connected, the drive current value needs to be increased.

[0025] The output connector 138 of the driver 134 is connected to the input connector 151 of the light source module 150. The output connector 158 of the light source module 150 can be connected to the input connector 151 of another light source module 150.

[0026] <Lighting control> The lighting control device 160 has lighting control software 161 (not shown) installed, and a brightness adjustment (dimming) interface is displayed on the screen 162. A chromaticity adjustment (color tuning) interface may also be displayed (used in other embodiments). The user controls the lighting using this interface. In addition to manual control in this manner, the control terminal may also automatically control the dimming and color tuning of the lighting device according to a schedule pre-programmed by the lighting control software 161. In either case, the lighting control signal transmitted wirelessly by 168 is received by the wireless module 148.

[0027] A wireless module 148, which receives wireless signals 168 and sends the lighting control signals contained in wireless signals 168 to the control unit 137, is installed in slot 139 of the driver 134. The wireless module 148 is removable from slot 139, and when removed, the driver 134 operates at 100% dimming.

[0028] The wireless module 148 sends a lighting control signal to the control unit 137, and the control unit 137 sends a dimming signal corresponding to the lighting control signal to the dimming unit 135.

[0029] <Circuit of the light source module> Figure 2 shows a schematic circuit diagram (a simplified version of the circuit diagram) of the light source module 150. The drive line 152D and the ground line 152G are connected to the input connector 151. Power is supplied from the drive line 152D, and the white LED 153N and the constant current IC 156N are connected in series, so that a constant current can be supplied to the white LED 153N, which is a constant current load with diode characteristics, using the driver 134, which is a DC 24V constant voltage source.

[0030] The drive line 152D and the ground line 152G are connected to the output connector 158. Therefore, the output connector 158 can be connected to another light source module 150 to supply power.

[0031] <Drive current waveform and anomaly detection algorithm> Figure 3 shows the time variation of the voltage and current of the power supply in Embodiment 1. The horizontal axis represents time t, and the vertical axis represents I(PS), I(L) represents the current value (mA), and V(PS) and V(L) represent the voltage value (V). Furthermore, Figure 4 is an enlarged schematic diagram of the part indicated by Q in Figure 3.

[0032] In Figure 3, I(PS) and V(PS) are the output current and output voltage of the DC power supply 130, respectively. I(L) and V(L) are the output current and output voltage of driver 134, respectively. This waveform is a PWM waveform, but because it is rapidly switching ON / OFF relative to the horizontal axis scale, it appears to have a range of values ​​at the top and bottom of the graph, with the top being the peak value. For the sake of explanation, the horizontal axis, which represents time t, is divided into periods T1 to T11.

[0033] S01: Initial ON current value detection step (initial ON current value detection means) A load presumed to be normal (hereinafter referred to as "normal load") is connected, and a pulse current is applied to the normal load during T1 (initial ON current value detection period) in Figure 3. At that time, for example, the control unit 137 and the current detection unit 136 operate as means for detecting the initial ON current value, and detect the peak value of the initial current value I(L0) for an ON period of, for example, 10 seconds. That value is stored in the memory of the control unit 137. Even under normal load conditions, the initial ON current value for a normal load can be used, as it is presumed to be a normal load at the start of use.

[0034] The ON current value during the initial ON current detection period will fluctuate slightly but will remain within a certain range. The initial ON current value should be within that range. For example, the maximum value of the initial ON current value during the initial ON current detection period may be used. Alternatively, the average value of the initial ON current value during the initial ON current detection period may be used.

[0035] During the initial ON current value detection period, the dimming rate may be set to 100%, and the pulse OFF period may be set to zero.

[0036] S02: Anomaly detection ON current value setting step (anomaly detection ON current value setting means) The control unit 137 operates as an abnormality detection ON current value setting means and sets a current value I(La) that is a predetermined value greater than the initial ON current value I(L0) as the abnormality detection ON current value.

[0037] The abnormal detection ON current value may be, for example, the initial current value I(L0) during the ON period plus a constant current value such as 1A, or it may be the initial current value I(L0) during the ON period multiplied by a factor, for example, 1.1 times the initial current value.

[0038] The abnormal detection ON current value is set to a current value smaller than the maximum rated current value of the power supply, making it possible to detect abnormalities even for loads that draw currents less than or equal to the maximum rated current value. However, in cases where the abnormal detection ON current value set by the above calculation is greater than the maximum rated current value, the maximum rated current value is set as the abnormal detection ON current value.

[0039] S03: Abnormal current value count step (abnormal current value counting means) For the abnormal condition experiment, a load that produces abnormal phenomena was connected and a pulse current I(L) was applied from period T3 onwards in Figure 3. Note that in the DC power supply 130, current is reapplied to the driver 134 during period T3, but there may be a delay of period T3 before current is applied from the driver 134 to the load during period T4.

[0040] The control unit 137 and the current detection unit 136 operate as abnormal current value counting means, monitoring the signal from the current detection unit and counting the number of times the abnormal current value exceeds the abnormal judgment ON current value I(La), as shown in Figure 4, numbers 1 to 5. Subsequent ON current values ​​I(L) do not exceed the abnormal judgment ON current value I(La) and are therefore not counted. If an abnormality were determined after only one exceedance of the abnormal judgment ON current value, the power supply may shut off due to the effects of sudden noise. Therefore, the system is configured to shut off the current only in cases of abnormalities that continue for a certain period of time.

[0041] S04: Anomaly detection step (anomaly detection means) The control unit 137 determines that an abnormality has occurred if the number of times the above-mentioned abnormal current value occurs exceeds a certain value, for example, 30 times in the PWM waveform.

[0042] However, if the determination is based solely on the number of abnormal current values, then in cases where the dimming rate is 100% or continuous output due to non-dimming, the "number of abnormal current values" will be 1, and it will not be judged as "abnormal." Although I(L) in Figure 3 is a pulse waveform, if it were a continuous waveform, the time during which the abnormal current value is observed should also be measured, as shown in T4 of Figure 3, and if that time is greater than or equal to a predetermined value, it should be judged as abnormal. The "time during which the abnormal current value is observed" may include the OFF period.

[0043] S05: Current stop step During period T5, the control unit 137 and the dimming unit 135 operate as current stop means, and if the current value is determined to be abnormal in the abnormality determination step S04, the control unit 137 stops applying current to the load by instructing the dimming unit 135 to set the dimming rate to zero, or by other means. The control unit 137 may also stop the DC power supply 130.

[0044] S06: Current re-application step (current re-application means) If the abnormality is temporary and the system has already returned to normal, there is little need to continue the stop after it has been stopped by S05. Therefore, after a certain period of time (period T5), such as 3 seconds, the control unit 137 and the dimming unit 135 operate as current reapplication means during periods T6 and T7, reapplying pulse current to the load, and repeating S03 "abnormal current value count step". Note that in the DC power supply 130, current is reapplied to the driver 134 during period T6, but there may be a delay of period T6 before current is applied from the driver 134 to the load during period T7.

[0045] S07: Complete stop step (complete stop means) If the abnormality detection step in S04 is repeated, and the current reapplication step in S06 is repeated two or three times, it can be determined that the abnormality is not temporary. Therefore, in Figure 3, during period T11 after repeating S06 three times, the control unit 137 completely shuts off the power supply.

[0046] S08: Anomaly Notification Step (Anomaly Notification Means) If the power supply completely shuts off, it will be necessary to require a human to inspect the abnormal parts. Therefore, it is desirable that the fact that the current has stopped is transmitted to a control device, such as a lighting control device 160 or a smartphone, via wireless communication using the wireless module 148 of the power supply 140, and that the control device displays an alert. In this case, the control unit 137 and the wireless module 148 function as abnormality notification means.

[0047] Since power supply unit 140 is sometimes installed in places invisible to people, such as attics, simply illuminating the abnormality warning lamp on power supply unit 140 as an alert may not be communicated to humans. By transmitting the alert to the control unit via an abnormality notification method, the occurrence of an abnormality can be communicated to humans.

[0048] The power supply 140 may emit a warning sound as an alert. In that case, it is desirable that the warning sound can be stopped using, for example, a control device.

[0049] <Embodiment 2> <Structure> Figure 5 shows the configuration of the lighting device 300 in this embodiment. The power supply 340 consists of a DC power supply 330 and a driver 334. Commercial power 120 is converted to a DC output by the DC power supply 330, which is input to the driver 334. The output of the driver 334 drives the light source modules 150A and 150B, which are the load.

[0050] <Power supply and anomaly detection algorithm> The DC power supply 130 consists of a rectifier / switching unit 332, a current detection unit 336, and a control unit 337B. The current detection unit 336 performs the S01: initial ON current value detection step, similar to Embodiment 1, and the control unit 337B performs the S02: abnormal judgment ON current value setting step, S03: abnormal current value count step, S04: abnormal judgment step, and S05: current stop step. In the current stop step, the operation of the rectifier / switching unit 332 stops.

[0051] The driver 334 has a slot 339, a control unit 337A, and a dimming unit 335. A wireless module 148 is mounted in the slot 339. The wireless module 148 receives a wireless signal 168 transmitted by the lighting control device 160 and sends a lighting control signal to the control unit 337A. The dimming unit 335 converts the output 333 of the DC power supply 130 into a PWM output corresponding to the lighting control signal.

[0052] Thus, in Embodiment 2, there is a current detection unit first, followed by a dimming unit. Since a PWM waveform current flows through the current detection unit, each step in the abnormality detection algorithm is the same as in Embodiment 1.

[0053] <Embodiment 3> In the lighting device 200 of this embodiment, color adjustment is performed using multiple colored LEDs.

[0054] <Structure> Figure 6 shows the configuration of the lighting device 200 of this embodiment. The power supply 240 consists of a DC power supply 130 and a driver 234. Commercial power 120 is converted to a DC output by the DC power supply 130, which is input to the driver 234, and the output of the driver 234 drives the light source module 250, which is the load. The load may be only the first light source module 250A, or it may be the first light source module 250A and the second light source module 250B connected together. The driver 234 is controlled by the lighting control device 160.

[0055] <Power supply> The DC power supply 130 in power supply 240 receives commercial power 120 from terminal 131 and rectifies it using the rectifier / switching unit 132.

[0056] The driver 234 controls three P values ​​in the dimming units 235Bw, 235Yw, and 235R according to the dimming rate of each color LED. WM Generates output.

[0057] A wireless module 148 is installed in slot 239 of driver 234. This module receives a wireless signal 168 transmitted by the lighting control device 160 and sends a lighting control signal to the control unit 237. The lighting control signal consists of three channels, each driving one of the three colored LEDs. The wireless module 148 is removable from slot 239.

[0058] The wireless module 148 sends a lighting control signal to the control unit 237. The control unit 237 sends dimming signals corresponding to the lighting control signal to the dimming units 235Bw, 235Yw, and 235R.

[0059] The driver 234 outputs three LED drive outputs corresponding to three different colored LEDs from the output connector 238.

[0060] The input connector 251 of the first light source module 250A is connected to the output connector 238 of the driver 234 to receive the LED drive output. The output connector 258 of the first light source module 250A is connected to the input connector 251 of the second light source module 250B as needed, but the second light source module 250B is not required to be connected. In addition, other light source modules 250 may be connected to the second light source module 250B, and the number of connections is determined by the output of the driver 234.

[0061] The outputs of the dimming units 235Bw, 235Yw, and 235R are detected by the current detection units 236Bw, 236Yw, and 236R, respectively, to determine the current value during the ON period. Based on these detection signals, the control unit 237 detects abnormalities in steps S01 to S06, similar to Embodiment 1.

[0062] <Light source module> Figure 7 shows a schematic circuit diagram of the light source module 250. The light source module 250 is equipped with a blue-white LED 253Bw, a yellow-white LED 253Yw, and a red LED 253R, and is connected in series with constant current ICs 256Bw, 256Yw, and 256R, respectively. In addition, each color LED is supplied with driving power by drive lines 252Bw, 252Yw, and 252R, respectively. The ground line 252G is used in common for all color LEDs.

[0063] The input connector 251 connects the drive lines 252Bw, 252Yw, 252R, and the ground line 252G to the driver 234. The output connector 258 connects the drive lines 252Bw, 252Yw, 252R, and the ground line 252G to the light source module 250.

[0064] <Light source> The blue-white LED 253Bw has a chromaticity of (0.336) in the CIE1931 chromaticity coordinates shown in Figure 8. , 0.24), (0.352 , 0.44), (0.15 , 0.2), (0.2 , It emits light within the chromaticity range enclosed by 0.1), for example (0.23 , 0.26)

[0065] The red LED 253R has a chromaticity coordinate of (0.66) in Figure 8. , 0.23), (0.423) , It emits light in the range of chromaticity enclosed by the chromaticity boundary line E, such as (0.355) and (0.5, 0.5), and as an example, (0.60 , This is 0.38). Please note that this is not the same as the general definition of red.

[0066] The yellow-white LED 253Yw has the following chromaticity coordinates in Figure 8: (0.5, 0.5), (0.423 , 0.355), (0.342, 0.312), (0.352 , 0.44), (0.37 ,It emits light in the range of chromaticity enclosed by 0.63 and the chromaticity boundary line E, for example (0.44 , 0.47)

[0067] By controlling the ratio of the emission amounts of these three colors, it is possible to reproduce a wide range of colors, such as those in line with blackbody radiation (1800K to 12000K) and colors within a practical range like the blue sky or sunset.

[0068] Furthermore, to broaden the color reproduction range, it is also possible to use the three primary colors red (R), blue (B), and green (G), which are close to the chromaticity boundary. However, using the three colors including two non-primary color LEDs, R, Bw, and Gw, has the advantage of achieving a relatively better power-to-luminous flux conversion efficiency (lm / W) compared to using the three primary colors RGB close to the chromaticity boundary.

[0069] <Anomaly detection algorithm> In the lighting device 200, the operation from S01 to S06 is performed for each of the three LED colors, based on the driving current of each color, as shown in Figure 3 and its enlarged version, Figure 4.

[0070] If the control unit 237 determines the conditions for proceeding to "S07: Complete Stop Step" based on the detection result of any one of the current detection units 236Bw, 236Yw, or 236R, the control unit 237 instructs all outputs, including outputs of other colors where no abnormalities have occurred, to be completely stopped.

[0071] If a complete shutdown occurs due to an abnormality, the abnormality is communicated to the control device via "S08: Abnormality Notification Step". The alert issued by the control unit 237 indicating a power interruption is preferably transmitted to the lighting control device 160 or a control device including a smartphone, for example, via wireless communication using the wireless module 148 of the power supply 240, and the control device displays the alert.

[0072] It is desirable that the control unit display information indicating which of the three output channels experienced an abnormality.

[0073] The power supply 140 may emit a warning sound (including voice) as an alert. For example, it is desirable to give a voice message that specifically indicates the location of the abnormality, such as "There is an abnormality in the red load." In that case, it is desirable that the warning sound can be stopped using a control device, for example.

[0074] <Variations and other variations> Although embodiments of the lighting device according to the present invention have been described above, the exemplified lighting device can also be made as follows, for example, and it goes without saying that the present invention is not limited to the lighting device shown in the above embodiments.

[0075] Although the DC power supply and driver components that make up the power supply are described separately, both functions can be housed in a single power supply enclosure.

[0076] Within the power supply 140, there may be no dimming unit 135, and the output current of the rectifier / switching unit 132 may be detected by the current detection unit 136. In this configuration, if an abnormality in the current value is detected, the output of the rectifier / switching unit 132 is stopped.

[0077] The power supply 240 may also be configured to have a current detection unit on the DC power supply side, as in Embodiment 2. However, in that case, there will only be one current detection unit, so it will not be possible to detect the current value for each color.

[0078] In Embodiment 2, the driver 334 may be omitted. In that case, the load will be driven without dimming.

[0079] The power supply load may be a regular, non-bendable LED lighting fixture other than a strip light.

[0080] The power supply load may be one that cannot be connected or disconnected.

[0081] Regarding the number of LED colors used in the light source module, although the first and second embodiments use one color and the third embodiment uses three colors, for example, two colors including a high color temperature white LED and a low color temperature white LED may be used. Further, four or more colors may be used.

[0082] In the schematic diagram of the light source module, although the case where one set of LEDs connected in series is shown, a plurality of LEDs connected in series may be connected in parallel.

[0083] Although it has been described that a pulse output having an ON period and an OFF period is output to the LED, the OFF period may not be provided, for example, when the dimming rate is 100%. In this case, the abnormality determination ON current value becomes an abnormality determination current value, the abnormality determination ON current value setting means becomes an abnormality determination current value setting means, the initial ON current value becomes an initial current value, and so on.

[0084] PWM in PWM output stands for Pulse Width Modulation, and T ON or T OFF only needs to have at least one of them modulated. That is, T ON +T OFF is not limited to narrowly-defined PWM where = constant, T ON +T OFF may be PFM (Pulse Frequ e n c y Modulation) where the sum is not constant, etc.

[0085] Wireless communication may be any non-wired communication method other than radio waves, such as infrared rays.

[0086] The device that receives an alert issued by the power supply is not limited to a lighting control device, and may be any control device such as a general device equipped with a smartphone, tablet, PC, or processor. Communication between the power supply and the control device may be performed by wired communication other than wireless communication.

[0087] Furthermore, the embodiments disclosed herein are illustrative in all respects and do not constitute a limiting interpretation. Therefore, the technical scope of the present invention is not construed solely by the embodiments described above, but is defined based on the claims. This also includes all modifications within the meaning and scope of the equivalents of the claims. [Explanation of Symbols]

[0088] 100, 200, 300 lighting devices 120 Commercial power 130, 330 DC power supply 131 terminals 132, 332 Rectifier / Switching Section 133, 333 output 134, 234, 334 drivers 135, 235Bw, 235Yw, 235R, 335 Dimmer 136, 236Bw, 236Yw, 236R, 336 Current detection unit 137, 237, 337A, 337B control unit 138, 238 output connectors 139, 239, 339 slots 140, 240, 340 power supply 148 Wireless Modules 150, 150A, 150B, 250, 250A, 250B Light Source Modules 151, 251 input connectors 152D, 252Bw, 252Yw, 252R drive lines 152G, 252G Ground Line 153N white LED 156N, 256Bw, 256Yw, 256R constant current IC 158, 258 output connectors 160 Lighting control device 161 Lighting control software 162 screens 168 Wireless 253Bw blue white LED 253R Red LED 253Yw Yellow-white LED

Claims

1. A lighting power supply comprising a switching unit that performs voltage conversion by switching operation, and a driver unit provided downstream of the switching unit and equipped with a dimming unit, wherein the driver unit outputs a pulse voltage in which ON and OFF periods are repeated, The ratio of the ON period to the OFF period is output by the dimming unit. The aforementioned driver unit is An initial ON current value detection means for detecting the initial ON current value during the ON period when the pulse voltage is output to an initial light source that is presumed to be normal, An abnormality determination current value setting means sets an abnormality determination ON current value which is a current value for the ON period that is greater than the initial ON current value and less than the maximum rated current value of the lighting power supply, An abnormal current value counting means for counting the number of times the current value flowing through the light source during the ON period exceeds the abnormal determination ON current value, A lighting power supply equipped with an abnormality detection means that determines an abnormality to occur when the number of occurrences exceeds a certain value.

2. The ratio of the ON period to the OFF period output by the dimming unit is controlled by an external control device. The lighting power supply according to claim 1.

3. When an abnormality is determined, the device is provided with an abnormality notification means for notifying the control device of the abnormality via wireless communication. The lighting power supply according to claim 2.

4. The driver unit has a current re-application means that outputs the pulse voltage again after a certain period of time has elapsed since the abnormality determination means determined to be abnormal and the pulse voltage was stopped, The lighting power supply according to claim 1.

5. A lighting device comprising a lighting power supply according to claim 1 and a light source module connected to the lighting power supply, wherein the light source module is an LED, A lighting device that allows multiple light source modules to be connected to the lighting power supply, and also allows the light source modules to be separated.

6. A lighting system comprising an LED as a light source, a lighting power supply that outputs a pulse voltage to the light source that alternates between ON and OFF periods, and a control device that communicates with the lighting power supply, The aforementioned lighting power supply comprises a switching unit that performs voltage conversion by switching operation, and a driver unit provided downstream of the switching unit and equipped with a dimming unit. The ratio of the ON period to the OFF period is output by the dimming unit. The aforementioned driver unit is An initial ON current value detection means for detecting the initial ON current value when the pulse voltage is output during the ON period for the initial light source which is presumed to be normal, An abnormality determination current value setting means sets an abnormality determination ON current value which is a current value for the ON period that is greater than the initial ON current value and less than the maximum rated current value of the lighting power supply, An abnormal current value counting means for counting the number of times the current value flowing through the light source during the ON period exceeds the abnormal determination ON current value, It includes an abnormality detection means that determines an abnormality when the number of occurrences exceeds a certain value. Lighting system.

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