JP2016212967A - Floodlight, luminaire and lighting control circuit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a floodlight having a light-emitting diode in which a filter circuit for reducing noise is mounted and lighting can be stably performed when connected to a fluorescent lamp inverter ballast.SOLUTION: A floodlight includes: first and second rectifying circuits 24, 25 which rectify an AC voltage supplied from pairs of terminals 511, 512, 521, 522 of first and second bases 21, 22 and supply the rectified voltage to a light-emitting diode 271; a filter circuit 23 which is inserted between input portions of any one of the pairs of terminals 511, 512, 521, 522 of the first and second bases 21, 22 and any one of the first and second rectifying circuits 24, 25 and reduces noise; and low-frequency pass filters 219, 229 provided at the input portion of the filter circuit 23. The low-frequency pass filters 219, 229 cut off an AC voltage supplied from a fluorescent lamp inverter ballast 50, and pass an AC voltage supplied from a commercial AC power supply.SELECTED DRAWING: Figure 8

Description

  The present invention relates to an illumination lamp, an illumination device, and a lighting control circuit.

  In recent years, attention has been focused on illumination lamps using light emitting diodes (LEDs) having features such as low power consumption and long life (hereinafter, sometimes referred to as LED illumination lamps). One of them is an LED lamp that receives the output of a fluorescent lamp inverter ballast, commercial AC power supply, fluorescent lamp glow ballast, or fluorescent lamp rapid ballast, and can be used in place of a conventional fluorescent lamp. .

  In the LED lighting as described above, when an output from a commercial AC power supply, a fluorescent light glow ballast, or a fluorescent light rapid ballast is input, a filter provided with a capacitor or a coil to satisfy the EMI standard It is common to mount a circuit. In many cases, the capacity of a capacitor (so-called X capacitor) connected between the lines of the input portion of the filter circuit is set to a relatively large capacity of 0.1 μF or more.

  However, some fluorescent lamp inverter ballasts detect an abnormality at start-up, and when an abnormality is detected, the fluorescent lamp is turned off by a protection operation. If an LED illuminator equipped with a filter circuit is attached to such a fluorescent light inverter ballast, unnecessary current flows through the filter circuit during startup, and the LED illuminating lamp is protected by the protective operation of the fluorescent light inverter ballast. There was a case where it was not lit.

  The present invention has been made in view of the above points, and is equipped with a filter circuit for reducing noise in an illuminating lamp including a light emitting diode and stably lit when connected to a fluorescent lamp inverter stabilizer. Let's make it an issue.

  This illuminating lamp is an illuminating lamp that can be connected to two or more different types of power supply units including a fluorescent lamp inverter ballast, and is mounted on one of a light emitting diode and a pair of sockets of the power supply unit. A first base having a pair of terminals, a second base having a pair of terminals mounted on the other of the pair of sockets of the power supply unit, and the pair of terminals of the first base A first resistor and a first capacitor connected in parallel with each other; a second resistor and a second capacitor connected in parallel between the pair of terminals of the second base; and two input portions. A first rectifier circuit that rectifies an alternating voltage supplied from the pair of terminals of the first base and supplies the rectified voltage to the light emitting diode; and two input parts; Adjust the AC voltage supplied from the pair of terminals of the base. A second rectifier circuit that supplies the rectified voltage to the light emitting diode, and one of the pair of terminals of the first base and one input portion of the first rectifier circuit. And a filter circuit for reducing noise, inserted between any one of the pair of terminals of the second base and any one input portion of the second rectifier circuit, and the filter circuit A low-frequency pass filter provided at the input section, wherein the low-frequency pass filter cuts off the AC voltage supplied from the fluorescent lamp inverter stabilizer and is supplied from a commercial AC power source. Is required to pass.

  According to the disclosed technology, in an illumination lamp including a light emitting diode, a filter circuit that reduces noise can be mounted and can be stably lit when connected to a fluorescent lamp inverter stabilizer.

It is a perspective view which illustrates the appearance of the illuminating device concerning a 1st embodiment. It is a cross-sectional view which illustrates the illuminating lamp which concerns on 1st Embodiment. It is a figure which illustrates the circuit block of the illuminating lamp which concerns on 1st Embodiment. It is a figure which illustrates the circuit block of the illuminating lamp which concerns on the modification 1 of 1st Embodiment. It is a figure which illustrates the circuit block of the illuminating lamp which concerns on the modification 2 of 1st Embodiment. It is a figure which illustrates the circuit block of the illuminating lamp which concerns on the modification 3 of 1st Embodiment. It is a figure which illustrates the circuit block of the illuminating lamp which concerns on the modification 4 of 1st Embodiment. It is a figure which illustrates the connection of the main circuits of the illuminating lamp which concerns on 1st Embodiment. It is FIG. (1) explaining the electric power feeding path | route of the illuminating lamp which concerns on 1st Embodiment. It is FIG. (2) explaining the electric power feeding path | route of the illuminating lamp which concerns on 1st Embodiment. It is FIG. (3) explaining the electric power feeding path | route of the illuminating lamp which concerns on 1st Embodiment. It is FIG. (4) explaining the electric power feeding path | route of the illuminating lamp which concerns on 1st Embodiment. It is FIG. (5) explaining the electric power feeding path | route of the illuminating lamp which concerns on 1st Embodiment.

  Hereinafter, embodiments for carrying out the invention will be described with reference to the drawings. In the drawings, the same components are denoted by the same reference numerals, and redundant description may be omitted.

<First Embodiment>
FIG. 1 is a perspective view illustrating the appearance of the lighting apparatus according to the first embodiment. Referring to FIG. 1, an illumination device 1 includes an illumination lamp 2 and a lamp 5 on which the illumination lamp 2 is detachably mounted.

  The illuminating lamp 2 includes a translucent part 20 and bases 21 and 22. The translucent portion 20 is made of a resin or glass member that transmits light emitted from a built-in light source (an LED module 27 described later), and is provided at a base 21 provided at one end and at the other end. The cap 22 is sealed. The translucent part 20 can be made into a straight pipe shape, for example.

  The base 21 (first base) includes a pair of convex terminals 211 and 212. Similarly, the base 22 (second base) includes a pair of convex terminals 221 and 222. However, some of the terminals are not shown in FIG. 1 (see FIG. 8 described later). In addition, an electric circuit is provided inside the translucent part 20 (see FIG. 3 described later).

  The lamp 5 includes a fluorescent lamp ballast 50 (see FIG. 8) and a pair of sockets 51 and 52 to which the illumination lamp 2 is detachably mounted, and is configured to be connectable to a commercial AC power source. The frequency of the commercial AC power supply is, for example, 50 Hz or 60 Hz. The electric power from the commercial AC power supply is supplied to the fluorescent lamp ballast 50.

  The fluorescent lamp ballast 50 is, for example, a well-known fluorescent lamp glow ballast, a fluorescent lamp rapid ballast, a fluorescent lamp inverter ballast, or the like. However, as will be described later, the illuminating lamp 2 is configured to be directly connected to a commercial AC power supply, and in this case, the fluorescent lamp stabilizer 50 is not necessary. As described above, the illuminating lamp 2 can be configured to be connectable to any of the fluorescent lamp glow stabilizer, the fluorescent lamp rapid stabilizer, the fluorescent lamp inverter stabilizer, and the commercial AC power supply.

  The socket 51 includes concave terminals 511 and 512. Similarly, the socket 52 includes concave terminals 521 and 522. However, some of the terminals are not shown in FIG. 1 (see FIG. 8 described later).

  The terminals 211 and 212 of the base 21 of the illuminating lamp 2 are inserted into and fitted into the terminals 511 and 512 of the socket 51 of the lamp 5 and are electrically connected. Similarly, the terminals 221 and 222 of the base 22 of the illuminating lamp 2 are inserted into and fitted into the terminals 521 and 522 of the socket 52 of the lamp 5 and are electrically connected.

  FIG. 2 is a cross-sectional view illustrating the illuminating lamp according to the first embodiment. As shown in FIG. 2, in the illuminating lamp 2, a frame 410 is fixed inside the cylindrical light transmitting portion 20. An LED substrate 420 on which the LED module 27 is mounted is detachably attached to one side of the frame 410. A holder 430 is provided on the other side of the frame 410, and a DRV board 440 on which the rectifier circuits 24 and 25, the drive circuit 26, and the like are mounted is detachably mounted on the holder 430.

  The frame 410 and the holder 430 have substantially the same cross-sectional shape in the longitudinal direction, and are configured to be inserted into the translucent part 20 by sliding in the longitudinal direction from the end side of the translucent part 20. Yes. Similarly, the LED board 420 and the DRV board 440 have substantially the same cross-sectional shape in the longitudinal direction, and are inserted into the translucent part 20 by sliding in the longitudinal direction from the end side of the translucent part 20. It is configured to be possible.

  By providing the holder 430 between the LED board 420 and the DRV board 440, the heat of the DRV board 440 becomes difficult to be transmitted to the LED board 420, and the influence of the heat on the LED module 27 becomes substantially uniform for all the LEDs. For this reason, the inconvenience that the lifetime of the LED is partially shortened with the passage of time can be prevented.

  Thus, the shape of the illuminating lamp 2 is similar to a straight tube fluorescent lamp, and can be easily replaced with an existing fluorescent lamp attached to the lamp 5. However, the shape of the illumination lamp 2 may not be similar to the fluorescent lamp. For example, the cross-sectional shape of the light transmitting portion 20 may be a semi-cylindrical shape instead of a cylindrical shape.

  FIG. 3 is a diagram illustrating a circuit block of the illuminating lamp according to the first embodiment. Referring to FIG. 3, the illuminating lamp 2 includes bases 21 and 22, a filter circuit 23, rectifier circuits 24 and 25, a drive circuit 26, and an LED module 27 as main parts.

  The filter circuit 23 is an EMI countermeasure filter, and is a circuit for reducing electromagnetic noise emitted from the illumination lamp 2 to the surroundings. The filter circuit 23 can be, for example, a circuit in which line-to-line capacitors (X capacitors), anti-earth capacitors (Y capacitors), common mode coils, normal mode coils, and the like are connected in series or in parallel. By mounting the filter circuit 23, the illuminating lamp 2 can reduce electromagnetic noise and satisfy the EMI (Electro-Magnetic Interference) standard.

  The illuminating lamp 2 has a circuit configuration in which no current flows through the filter circuit 23 when the fluorescent lamp ballast 50 incorporated in the lamp 5 is a fluorescent lamp inverter ballast. This will be described in detail separately.

  The rectifier circuits 24 and 25 are circuits that rectify the AC voltage supplied directly from the caps 21 and 22 or via the filter circuit 23 and supply the rectified voltage to the LED module 27 via the drive circuit 26. is there.

  The drive circuit 26 is a circuit that drives an LED module 27 including a plurality of light emitting diodes. The drive circuit 26 can be configured to include, for example, a step-up / down circuit, a constant current circuit, or the like. Providing the drive circuit 26 makes it possible to supply an appropriate current that does not exceed the rating to the LED module 27 even if the voltage supplied from the rectifier circuits 24 and 25 fluctuates, and prevents a failure of the LED module 27. In addition, power saving can be realized.

  The illuminating lamp 2 can be connected to any of the power supply units of a fluorescent light glow ballast, a fluorescent light rapid ballast, a fluorescent light inverter ballast, and a commercial AC power supply, but a circuit to be used can be selected depending on the connected object. It is configured.

  Further, as shown in FIG. 4, a high frequency filter circuit 63 may be provided separately from the filter circuit 23. Then, the inverter detection circuit 28 and the switching circuit 61 are provided, and when the inverter detection circuit 28 detects that the fluorescent lamp stabilizer 50 incorporated in the lamp 5 is a fluorescent lamp inverter stabilizer, the switching circuit 61 It may be allowed to pass through the high frequency filter circuit 63. Thereby, even if the filter circuit 23 is bypassed, the problem of EMI noise does not occur, and an appropriate current that does not exceed the rating can be supplied to the LED module 27. In some cases, the fluorescent light ballast 50 is provided with a function corresponding to a filter circuit.

  The inverter detection circuit 28 is a circuit that detects whether or not the fluorescent lamp ballast 50 incorporated in the lamp 5 is a fluorescent lamp inverter ballast when the illuminating lamp 2 is connected to the lamp 5 and energized. It is. When the fluorescent lamp ballast 50 is a fluorescent lamp inverter ballast, the frequency of the signal input from the fluorescent lamp ballast 50 to the illumination lamp 2 is a high frequency of about several tens KHz.

  On the other hand, when the fluorescent lamp ballast 50 is any one of the fluorescent lamp glow ballast, the fluorescent lamp rapid ballast, and the commercial AC power supply, the fluorescent lamp ballast 50 (or directly from the commercial AC power supply) is input to the illumination lamp 2. The frequency of the transmitted signal is a low frequency of about 50-60 Hz. Therefore, the inverter detection circuit 28 detects, for example, whether or not the fluorescent lamp ballast 50 built in the lamp 5 is a fluorescent lamp inverter ballast based on the frequency of the signal input to the illuminating lamp 2. Can do.

  Further, as illustrated in FIG. 5, the drive circuit 26 may be configured to be bypassable by a switching circuit. The switching circuit can be configured by, for example, a relay or a semiconductor switch (FET or the like). If the inverter detection circuit 28 detects that the fluorescent lamp ballast 50 incorporated in the lamp 5 is a fluorescent lamp inverter ballast, the outputs of the rectifier circuits 24 and 25 bypass the drive circuit 26 and The module 27 is supplied. Also in the illuminating lamp of FIG. 5, when the inverter detection circuit 28 detects that the fluorescent lamp stabilizer 50 incorporated in the lamp 5 is a fluorescent lamp inverter stabilizer, the switching circuit 61 causes the high frequency You may make it pass a filter circuit.

  Furthermore, as shown in FIG. 6, a second drive circuit 66 may be provided separately from the drive circuit 26. Further, as illustrated in FIG. 7, the illumination lamp 2 may be configured to include a rapid detection circuit 29. The rapid detection circuit 29 is a circuit that detects whether the fluorescent lamp ballast 50 built in the lamp 5 is a fluorescent lamp rapid ballast when the illuminating lamp 2 is connected to the lamp 5 and energized. .

  For example, when the rapid detection circuit 29 detects that the fluorescent lamp ballast 50 incorporated in the lamp 5 is a fluorescent lamp rapid ballast, the filter circuit 23 and the drive circuit 26 are not bypassed, but the drive circuit 26 The specifications can be changed.

  The inverter detection circuit 28 does not detect that the fluorescent lamp ballast 50 is a fluorescent lamp inverter ballast, and the rapid detection circuit 29 indicates that the fluorescent lamp ballast 50 is a fluorescent lamp rapid ballast. In some cases, it may not be detected. In this case, it is recognized that the fluorescent lamp ballast 50 is a fluorescent lamp glow ballast, or that the illuminating lamp 2 is directly connected to the commercial AC power supply without passing through the fluorescent lamp ballast 50, and illumination is performed through the caps 21 and 22. The signal input to the lamp 2 is supplied to the rectifier circuits 24 and 25 via the filter circuit 23. The outputs of the rectifier circuits 24 and 25 are supplied to the LED module 27 via the drive circuit 26. In addition, the specification of the drive circuit 26 is selected to be compatible with a fluorescent lamp glow ballast and a commercial AC power supply.

  6 and 7, when the inverter detection circuit 28 detects that the fluorescent lamp ballast 50 incorporated in the lamp 5 is a fluorescent lamp inverter ballast, the switching circuit 61 causes the high frequency. The filter circuit may be passed through.

  The outline of the overall operation of the circuit block mounted on the illuminating lamp 2 has been described above with reference to FIGS. 3 to 7. Next, a characteristic operation of the illumination lamp 2 will be described with reference to FIG. In FIG. 8, only the main circuit connections of the illuminating lamp 2 according to the present embodiment are shown, and illustrations of the connection portions not related to the characteristic operation are omitted.

  In FIG. 8, terminals 211 and 212 of the base 21 of the illuminating lamp 2 are inserted into and fitted into terminals 511 and 512 of the socket 51 of the lamp 5 and are electrically connected. Similarly, the terminals 221 and 222 of the base 22 of the illuminating lamp 2 are inserted into and fitted into the terminals 521 and 522 of the socket 52 of the lamp 5 and are electrically connected.

  A resistor 215 (first resistor) and a capacitor 216 (first capacitor) are connected in parallel between the terminal 211 and the terminal 212 of the base 21 of the illuminating lamp 2. Similarly, a resistor 225 (second resistor) and a capacitor 226 (second capacitor) are connected in parallel between the terminal 221 and the terminal 222 of the base 22 of the illuminating lamp 2.

  The resistors 215 and 225 are circuits that generate impedance corresponding to the filament of the fluorescent lamp. By setting the resistance values of the resistors 215 and 225 to an appropriate impedance (several Ω to several hundred Ω) corresponding to the filament of the fluorescent lamp, the lighting is stably performed when the illumination lamp 2 is connected to the fluorescent lamp inverter stabilizer. Can be made. The functions of the capacitors 216 and 226 and the inductors 219 and 229 will be described later.

  A terminal 211 of the base 21 is directly connected to the rectifier circuit 24. A filter circuit 23 is inserted between the terminal 212 of the base 21 and one input part of the rectifier circuit 24. Similarly, the terminal 222 of the base 22 is directly connected to the rectifier circuit 25. A filter circuit 23 is inserted between the terminal 221 of the base 22 and one input part of the rectifier circuit 25. For example, the filter circuit 23 may include a capacitor 231, a coil 232, and a capacitor 233.

  Furthermore, inductors 219 and 229 that are low-frequency pass filters are provided at the input portion of the filter circuit 23. The inductors 219 and 229 are configured to block the AC voltage supplied from the fluorescent lamp inverter ballast and pass the AC voltage supplied from a commercial AC power source or the like.

  The rectifier circuits 24 and 25 are, for example, bridge-type full-wave rectifier circuits configured using a so-called fast recovery diode or the like having a short reverse recovery time. The rectifier circuit 24 includes two input units and rectifies the AC voltage supplied from the pair of terminals 211 and 212 of the base 21. The rectifier circuit 25 includes two input units, and rectifies the AC voltage supplied from the pair of terminals 221 and 222 of the base 22.

  The rectifier circuits 24 and 25 rectify the AC voltage input from the bases 21 and 22 via the filter circuit 23 when the fluorescent lamp ballast 50 is other than the fluorescent lamp inverter ballast. Then, the rectified voltage rectified by the rectifier circuits 24 and 25 is supplied to the drive circuit 26 (not shown in FIG. 8) via the positive-side wiring 31 and the negative-side wiring 32 which are output portions of the rectifier circuits 24 and 25. , And supplied to both ends of the LED module 27.

  On the other hand, when the fluorescent lamp ballast 50 is a fluorescent lamp inverter ballast, the rectifier circuits 24 and 25 rectify an AC voltage directly input from the fluorescent lamp inverter ballast without passing through the filter circuit 23. The rectified voltage rectified by the rectifier circuits 24 and 25 is output to the positive side wiring 31 and the negative side wiring 32, bypassing the drive circuit 26, and supplied to both ends of the LED module 27.

  The LED module 27 includes a plurality of series connection portions (six light emitting diodes 271 connected in series in FIG. 8) in which a plurality of light emitting diodes 271 are connected in series between the positive side wiring 31 and the negative side wiring 32. Have. Each series connection portion is connected in parallel in a plurality of rows. When the voltage between the positive side wiring 31 and the negative side wiring 32 exceeds the sum of the forward voltages of the plurality of light emitting diodes 271 constituting the series connection portion, a current flows through each light emitting diode 271 to emit light.

  By the way, the fluorescent lamp inverter ballast uses the terminal 211 of the base 21 and the terminal 222 of the base 22 to supply power to the fluorescent lamp side, and the terminal 212 and the terminal 22 of the base 22 of the lamp 2. There is a second type that uses 221 to feed power to the fluorescent lamp side. Further, a third type for supplying power to the fluorescent lamp side using the terminal 211 of the base 21 and the terminal 221 of the base 22 and a fluorescent lamp using the terminal 212 of the base 21 and the terminal 222 of the base 22 of the illumination lamp 2 are used. There is a fourth type that feeds power to the side.

  In the illuminating lamp 2, when the first type fluorescent lamp inverter ballast is connected, power is supplied as shown in the power supply path A of FIG. 9, and the capacitors 216 and 226 do not become power supply paths.

  On the other hand, when the second type fluorescent lamp inverter ballast is connected, power is supplied as shown in the power supply path B of FIG. That is, a signal (a high-frequency signal having a frequency of about several tens of KHz) input from the fluorescent lamp ballast 50 to the illuminating lamp 2 is blocked by the inductors 219 and 229, and the rectifier circuits 24 and 25 via the capacitors 216 and 226. Supplied to the side.

  When a third type fluorescent lamp inverter ballast is connected, power is supplied as shown in a power supply path C of FIG. That is, a signal (a high-frequency signal having a frequency of about several tens of KHz) input from the fluorescent lamp ballast 50 to the illumination lamp 2 via the terminal 211 of the base 21 is directly connected to the rectifier circuit 24 without using the capacitor 216 as a power supply path. Supplied to the side. On the other hand, a signal (a high-frequency signal having a frequency of about several tens of KHz) input to the illumination lamp 2 via the terminal 221 of the base 22 is blocked by the inductor 229 and supplied to the rectifier circuit 25 side via the capacitor 226. Is done.

  When a fourth type fluorescent lamp inverter ballast is connected, power is supplied as shown in a power supply path D of FIG. That is, a signal (a high-frequency signal having a frequency of about several tens of KHz) input from the fluorescent lamp stabilizer 50 to the illumination lamp 2 via the terminal 212 of the base 21 is cut off by the inductor 219 and passed through the capacitor 216. It is supplied to the rectifier circuit 24 side. On the other hand, a signal (a high-frequency signal having a frequency of about several tens of KHz) input to the illumination lamp 2 via the terminal 222 of the base 22 is directly supplied to the rectifier circuit 25 side without using the capacitor 226 as a power supply path.

  In addition, when the fluorescent lamp ballast 50 is a commercial AC power supply, the terminal designation is performed so that power is supplied using the terminal 212 of the base 21 of the illumination lamp 2 and the terminal 221 of the base 22. The frequency of the signal input from the fluorescent lamp ballast 50 (or directly from the commercial AC power source) to the illumination lamp 2 is a low frequency of about 50 to 60 Hz. In this case, power is supplied as shown in the power supply path E of FIG.

  That is, a signal (a low-frequency signal having a frequency of about 50 to 60 Hz) input from the fluorescent lamp stabilizer 50 to the illumination lamp 2 via the terminal 212 of the base 21 and the terminal 221 of the base 22 is the resistors 215 and 225, Blocked by capacitors 216 and 226. Then, it is supplied to the rectifier circuits 24 and 25 via the inductors 219 and 229 and further via the filter circuit 23.

  If the fluorescent lamp ballast 50 is a fluorescent lamp glow ballast or a fluorescent lamp rapid ballast, the fluorescent lamp ballast 50 itself has a copper iron winding (a large inductor / transformer), and therefore the fluorescent lamp ballast 50 itself. Has an EMI noise reduction effect. Therefore, it may pass through any of the power feeding paths shown in FIGS. That is, when the fluorescent lamp ballast 50 is a fluorescent lamp glow ballast or a fluorescent lamp rapid ballast, it may or may not pass through the filter circuit 23.

  It is necessary to set the capacitances of the capacitors 216 and 226 and the inductances of the inductors 219 and 229 to values that can realize the above power feeding paths A to E.

  In other words, the capacitors 216 and 226 need to be set to values at which the impedance is sufficiently low with respect to a high-frequency signal (a high-frequency signal having a frequency of about several tens of KHz) input from the fluorescent lamp ballast 50 to the illumination lamp 2. . In addition, it is necessary to set a value at which the impedance is sufficiently high for a low-frequency signal (a low-frequency signal having a frequency of about 50 to 60 Hz). In order to satisfy this requirement, the capacitances of the capacitors 216 and 226 are preferably 0.1 μF or more and 1 μF or less.

  Further, the inductors 219 and 229 need to be set to values at which the impedance is sufficiently high with respect to a high-frequency signal (a high-frequency signal having a frequency of about several tens of KHz) input from the fluorescent lamp ballast 50 to the illumination lamp 2. . In addition, it is necessary to set a value at which the impedance is sufficiently low with respect to a low-frequency signal (a low-frequency signal having a frequency of about 50-60 Hz). In order to satisfy this requirement, the inductances of the inductors 219 and 229 are preferably 500 μH or more and 5 mH or less.

  In addition, when the inductors 219 and 229 are not inserted in the input part of the filter circuit 23, a current flows through the capacitor 231 of the filter circuit 23 when the fluorescent lamp inverter ballast is started. In this case, the fluorescent lamp inverter ballast may detect an abnormality and perform a protection operation, and the illumination lamp 2 may not be lit.

  In the present embodiment, since the inductors 219 and 229 are inserted in the input part of the filter circuit 23, the fluorescent lamp inverter ballast and the filter circuit 23 are not connected. As a result, since no current flows through the capacitor 231 of the filter circuit 23 when the fluorescent lamp inverter ballast is started, it is possible to avoid the lighting lamp 2 from being unlit due to the protective operation of the fluorescent lamp inverter ballast.

  As shown in FIG. 4, by providing the high frequency filter circuit 63, even if the filter circuit 23 is bypassed, the problem of EMI noise does not occur, and the LED module 27 has an appropriate current that does not exceed the rating. Can be supplied. In some cases, the fluorescent light ballast 50 is provided with a function corresponding to a filter circuit.

  On the other hand, when the fluorescent lamp ballast 50 is a commercial AC power source, a low-frequency signal from the fluorescent lamp ballast 50 is input to the filter circuit 23 through the inductors 219 and 229. Then, the signal filtered by the filter circuit 23 is supplied to the rectifier circuits 24 and 25. The outputs of the rectifier circuits 24 and 25 are supplied to the LED module 27 via the drive circuit 26. Thus, since the filter circuit 23 operates, the EMI standard can be satisfied.

  Conventionally, when the filter circuit 23 is provided, switching is performed to switch whether the filter circuit 23 is bypassed between the case where the fluorescent light ballast 50 is a fluorescent light inverter ballast and the other case. A circuit was provided. And the switching circuit was comprised by the relay and the semiconductor switch (FET etc.), for example. In the present embodiment, by providing the inductors 219 and 229, a switching circuit including a relay and a semiconductor switch (FET or the like) becomes unnecessary, which can contribute to cost reduction of the illumination lamp 2.

  The preferred embodiment and its modification have been described in detail above, but the present invention is not limited to the above-described embodiment and its modification, and the above-described implementation is performed without departing from the scope described in the claims. Various modifications and substitutions can be added to the embodiment and its modifications.

  For example, in the above-described embodiment, as an example of an illumination lamp, a lamp that can be connected to any one of the power supply units of a fluorescent lamp glow stabilizer, a fluorescent lamp rapid stabilizer, a fluorescent lamp inverter stabilizer, and a commercial AC power supply is shown. However, the present invention can be applied to an illumination lamp that can be connected to two or more different types of power supply units including a fluorescent lamp inverter ballast.

  If the impedance is sufficiently high with respect to the high frequency signal input from the fluorescent light ballast 50 to the illuminating lamp 2, and the impedance is sufficiently low with respect to the low frequency signal, the low frequency pass filter is not an inductor. You may comprise by the element of. Or it is good also as a structure which combined the inductor and elements other than an inductor.

DESCRIPTION OF SYMBOLS 1 Illuminating device 2 Illuminating lamp 5 Lamp 20 Light-transmitting part 21, 22 Base 23 Filter circuit 24, 25 Rectifier circuit 26 Drive circuit 27 LED module 28 Inverter detection circuit 29 Rapid detection circuit 31 Positive side wiring 32 Negative side wiring 50 Fluorescent lamp stability Device 51, 52 Socket 61 Switching circuit 63 High frequency filter circuit 66 Second drive circuit 211, 212, 221, 222, 511, 512, 521, 522 Terminal 215, 225 Resistor 216, 226, 231, 233 Capacitor 219, 229 Inductor 232 Coil 271 Light emitting diode 410 Frame 420 LED board 430 Holder 440 DRV board

Japanese Patent No. 5108994

Claims (8)

It is an illuminating lamp that can be connected to two or more different types of power supply units including a fluorescent lamp inverter ballast,
A light emitting diode;
A first base having a pair of terminals, mounted on one of the pair of sockets of the power supply unit;
A second base having a pair of terminals attached to the other of the pair of sockets of the power supply unit;
A first resistor and a first capacitor connected in parallel between the pair of terminals of the first base;
A second resistor and a second capacitor connected in parallel between the pair of terminals of the second base;
A first rectifier circuit comprising two input units, rectifying an alternating voltage supplied from the pair of terminals of the first base, and supplying a rectified voltage to the light emitting diode;
A second rectifier circuit comprising two input units, rectifying an alternating voltage supplied from the pair of terminals of the second base, and supplying the rectified voltage to the light emitting diode;
Between one of the pair of terminals of the first base and one input portion of the first rectifier circuit, and one of the pair of terminals of the second base and the first A filter circuit for reducing noise, which is inserted between any one of the two rectifier circuits;
A low-frequency pass filter provided at the input of the filter circuit,
The low-frequency pass filter cuts off the AC voltage supplied from the fluorescent lamp inverter ballast and passes the AC voltage supplied from a commercial AC power supply.   The illuminating lamp according to claim 1, wherein the low-frequency pass filter includes an inductor. The AC voltage supplied from the fluorescent lamp inverter stabilizer to the terminal connected to the filter circuit of the first base is supplied to the first rectifier circuit via the first capacitor,
An AC voltage supplied from the fluorescent lamp inverter ballast to a terminal connected to the filter circuit of the second base is supplied to the second rectifier circuit via the second capacitor. The illuminating lamp according to claim 1 or 2, characterized in that.   4. The illumination lamp according to claim 1, wherein capacitances of the first capacitor and the second capacitor are 0.1 μF or more. 5.   The illuminating lamp according to claim 4, wherein capacitances of the first capacitor and the second capacitor are 1 μF or less.   The illuminating lamp according to claim 1, wherein the first resistor and the second resistor generate an impedance corresponding to a filament of a fluorescent lamp. The illumination lamp according to any one of claims 1 to 6,
And a lamp for mounting the illumination lamp. A lighting control circuit used for an illumination lamp that can be connected to two or more types of different power supply units including a fluorescent lamp inverter ballast,
A light emitting diode;
A first resistor and a first capacitor connected in parallel between the pair of terminals of a first base having a pair of terminals of the illuminating lamp, mounted on one of the pair of sockets of the power supply unit; ,
A second resistor and a second capacitor connected in parallel between the pair of terminals of a second base having a pair of terminals of the illuminating lamp, which are attached to the other of the pair of sockets of the power supply unit; ,
A first rectifying unit comprising two input units, rectifying an alternating voltage supplied from the pair of terminals of the first base, and supplying a rectified voltage to the light emitting diode;
A second rectification unit comprising two input units, rectifying an AC voltage supplied from the pair of terminals of the second base, and supplying a rectified voltage to the light emitting diode;
Between any one of the pair of terminals of the first base and one input part of the first rectifying unit, and any one of the pair of terminals of the second base and the first A filter unit that is inserted between any one of the two rectifying units and that reduces noise;
A low-frequency pass filter provided at the input unit of the filter unit,
The lighting control circuit characterized in that the low-frequency pass filter cuts off an AC voltage supplied from the fluorescent lamp inverter ballast and allows an AC voltage supplied from a commercial AC power source to pass through.

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